Display device and control method of display device

Abstract

To provide a display device capable of promoting a setting of a connection to the display device of an external device to an appropriate setting or a setting of the display device to an appropriate setting for a user in the case where the external device is connected to the display device.SOLUTION: A display device comprises: a connection part; a notification part; a reception part that receives information for identifying an external device from an external device connected to the connection part; an analysis part that acquires at least one of an appropriate connection to the connection part of the external device by analyzing the information and an appropriate setting of the external device; and a notification processing part that causes the notification part to notify that the at least one of them exists.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a display device and a method for controlling the display device. [Background technology]

[0002] Patent Document 1 discloses a television. A plurality of external devices are connected to the television via a first high-definition multimedia interface (HDMI (registered trademark)) port and a second HDMI port. In the television, a random access memory (RAM) stores device information in which information identifying each device is associated with the type of each device, and destination information in which instructions are associated with the type of device to which each instruction is to be sent. A main microcomputer extracts, from the external devices, a device of a type corresponding to an instruction received from a remote control by a remote control receiver based on the device information and the destination information, and displays information identifying the extracted device on a display via a low-voltage differential signal (LVDS) transmitter (summary). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-246423 A Summary of the Invention [Problem to be solved by the invention]

[0004] The television disclosed in Patent Document 1 has a problem in that even when a high-performance external device is connected, if the HDMI port to which the external device is connected is not an appropriate HDMI port or if the television is not appropriately set, the external device cannot demonstrate its high performance.

[0005] A situation in which the HDMI port to which an external device is connected is not a suitable HDMI port occurs when multiple HDMI ports support different video formats, functions, etc.

[0006] For example, consider a case where a television has an HDMI port that supports 12G transmission and an HDMI port that does not support 12G transmission, and a recorder that supports 8K60Hz or 4K120Hz is connected to the television. In this case, when the recorder is connected to the HDMI port that supports 12G transmission, the television can display images at 8K60Hz or 4K120Hz. However, when the recorder is connected to the HDMI port that does not support 12G transmission, the television can only display images at 4K60Hz or lower.

[0007] Also consider a case where the TV mode can be switched between a mode compatible with HDMI 2.1 and a mode compatible with HDMI 1.4, and a recorder compatible with 4K 60 Hz is connected to the TV. In this case, when the TV mode is set to a mode compatible with HDMI 2.1, the TV can display 4K 60 Hz images. However, when the TV mode is set to a mode compatible with HDMI 1.4, the TV can only display images of 4K 30 Hz or lower. This problem is likely to occur when ensuring compatibility is prioritized and the TV mode is set to a mode compatible with HDMI 1.4 when the TV is shipped.

[0008] Also, consider a case where the mode of a television can be switched between a mode compatible with HDMI2.1 and a mode compatible with HDMI1.4, the television has an HDMI port compatible with 12G transmission and an HDMI port not compatible with 12G transmission, and a recorder compatible with 8K60Hz or 4K120Hz is connected to the television. In this case, when the television is set to a mode compatible with HDMI2.1 and the recorder is connected to an HDMI port compatible with 12G transmission, the television can display images of 8K60Hz or 4K120Hz. However, when the television is set to a mode compatible with HDMI1.4, the television can only display images of 4K30Hz or lower. Also, when the television is set to a mode compatible with HDMI2.1 and the recorder is connected to an HDMI port not compatible with 12G transmission, the television can only display images of 4K60Hz or lower. This problem is likely to occur when the television is set to a mode compatible with HDMI1.4 when the television is shipped, with compatibility being given priority.

[0009] Also, consider a case where the settings of a television can be switched between a setting compatible with a variable refresh rate (VRR) function and a setting not compatible with the VRR function, the television has an HDMI port compatible with the VRR function and an HDMI port not compatible with the VRR function, and a game console compatible with the VRR function is connected to the television. In this case, when the television is set to a setting compatible with the VRR function and the game console is connected to an HDMI port compatible with the VRR function, the television can display images using the VRR function. However, when the television is set to a setting not compatible with the VRR function or when the game console is connected to an HDMI port not compatible with the VRR function, the television cannot display images using the VRR function. This problem is likely to occur when the television is set to a setting not compatible with the VRR function when the television is shipped with compatibility being given priority.

[0010] Consider a case where a TV has an HDMI port that supports the Audio Return Channel (ARC) function and an HDMI port that does not support the ARC function, and an amplifier that supports the ARC function is connected to the TV. In this case, the amplifier can output audio when connected to the HDMI port that supports the ARC function. However, the amplifier cannot output audio when connected to the HDMI port that does not support the ARC function.

[0011] Consider a case where the settings of a television can be switched between a setting corresponding to the enhanced audio return channel (eARC) function and a setting corresponding to the ARC function, the television includes an HDMI port corresponding to the ARC function and the eARC function, and an HDMI port not corresponding to the ARC function and the eARC function, and an amplifier corresponding to the eARC function is connected to the television. In this case, when the television is set to a setting corresponding to the eARC function and the amplifier is connected to an HDMI port corresponding to the ARC function and the eARC function, the amplifier can output audio having a band corresponding to the eARC function. However, when the television is set to a setting corresponding to the ARC function and the amplifier is connected to an HDMI port corresponding to the ARC function and the eARC function, the amplifier can only output audio having a band corresponding to the ARC function. Also, when the amplifier is connected to an HDMI port not corresponding to the ARC function and the eARC function, the amplifier cannot output audio. This problem is likely to occur when the television is set to a setting corresponding to the ARC function when the television is shipped, with compatibility being given priority.

[0012] One aspect of the present disclosure has been made in consideration of these problems. An object of one aspect of the present disclosure is to provide a display device and a control method for the display device that, for example, when an external device is connected to the display device, can prompt a user to at least one of properly connect the external device to the display device and properly set the display device. [Means for solving the problem]

[0013] A display device of a first aspect of the present disclosure includes a connection unit, an alarm unit, a receiving unit that receives information identifying an external device from an external device connected to the connection unit, an analysis unit that analyzes the information to obtain at least one of an appropriate connection of the external device to the connection unit and an appropriate setting of the display device, and an alarm processing unit that causes the alarm unit to alarm that at least one of the above is present.

[0014] A control method for a display device according to a second aspect of the present disclosure includes receiving information identifying an external device from an external device connected to a connection unit, analyzing the information to obtain at least one of an appropriate connection of the external device to the connection unit and an appropriate setting of the display device, and notifying the presence of at least one of the above. [Brief description of the drawings]

[0015] [Figure 1] 1 is a block diagram of a display system according to a first embodiment. [Diagram 2] 2 is a diagram showing the contents of external device information included in a high-definition multimedia interface (HDMI (registered trademark)) signal transmitted by an external device provided in the display system of the first embodiment. FIG. [Diagram 3] 1 is a block diagram of a part of a display device provided in a display system according to a first embodiment. [Figure 4] 1 is a table showing the highest image quality and functions supported by each connection terminal of the display device provided in the display system of the first embodiment. [Diagram 5] FIG. 2 is a diagram showing appropriate connection of an external device provided in the display system to a connection section of a display device provided in the display system of the first embodiment. [Figure 6] FIG. 2 is a diagram showing appropriate connection of an external device provided in the display system to a connection section of a display device provided in the display system of the first embodiment. [Figure 7] FIG. 4 is a diagram showing appropriate settings for a display device included in the display system of the first embodiment. [Figure 8]FIG. 4 is a diagram showing appropriate settings for a display device included in the display system of the first embodiment. [Figure 9A] 5 is a flowchart showing the flow of processing performed by the display device included in the display system of the first embodiment. [Figure 9B] 5 is a flowchart showing the flow of processing performed by the display device included in the display system of the first embodiment. [Figure 9C] 5 is a flowchart showing the flow of processing performed by the display device included in the display system of the first embodiment. [Figure 10] FIG. 4 is a diagram showing a first example of a caution displayed on a display unit of the display device provided in the display system of the first embodiment. [Figure 11] FIG. 4 is a diagram showing a first example of a connection guide displayed on a display unit of the display device provided in the display system of the first embodiment. [Figure 12] FIG. 11 is a diagram showing a second example of a caution displayed on the display unit of the display device provided in the display system of the first embodiment. [Figure 13] 13 is a diagram showing a second example of a connection guide displayed on the display unit of the display device provided in the display system of the first embodiment. FIG. [Figure 14A] 10 is a flowchart showing the flow of processing performed by a display device provided in the display system of the first embodiment in a first operation example and a second operation example. [Figure 14B] 10 is a flowchart showing the flow of processing performed by a display device provided in the display system of the first embodiment in a first operation example and a second operation example. [Figure 14C] 10 is a flowchart showing the flow of processing performed by a display device provided in the display system of the first embodiment in a first operation example and a second operation example. [Figure 15] 13 is a diagram showing an example of a caution displayed on a display unit of a display device provided in the display system of the first embodiment in a second operation example. FIG. [Figure 16]13A and 13B are diagrams showing an example of a connection guide displayed on a display unit of a display device provided in the display system of the first embodiment in a second operation example. [Figure 17A] 13 is a flowchart showing the flow of processes performed by a display device provided in the display system of the first embodiment in a third operation example, a fourth operation example, and a fifth operation example. [Figure 17B] 13 is a flowchart showing the flow of processes performed by a display device provided in the display system of the first embodiment in a third operation example, a fourth operation example, and a fifth operation example. [Figure 17C] 13 is a flowchart showing the flow of processes performed by a display device provided in the display system of the first embodiment in a third operation example, a fourth operation example, and a fifth operation example. [Figure 18] 13 is a diagram showing an example of a caution displayed on a display unit of a display device provided in the display system of the first embodiment in a third operation example. FIG. [Figure 19] FIG. 13 is a diagram showing an example of a setting guide displayed on a display device provided in the display system of the first embodiment in a third operation example. [Figure 20] FIG. 13 is a diagram showing an example of a caution displayed on a display unit of a display device provided in the display system of the first embodiment in a fourth operation example. [Figure 21] FIG. 13 is a diagram showing an example of a setting guide displayed on a display device provided in the display system of the first embodiment in a fourth operation example. [Figure 22] FIG. 13 is a diagram showing an example of a caution displayed on a display unit of a display device provided in the display system of the first embodiment in a fifth operation example. [Figure 23] FIG. 13 is a diagram showing an example of a setting guide displayed on a display device provided in the display system of the first embodiment in a fifth operation example. [Figure 24] FIG. 11 is a block diagram of a display system according to a second embodiment. [Figure 25A] 13 is a flowchart showing the flow of processing performed by a display device provided in a display system according to a third embodiment. [Figure 25B]13 is a flowchart showing the flow of processing performed by a display device provided in a display system according to a third embodiment. [Figure 25C] 13 is a flowchart showing the flow of processing performed by a display device provided in a display system according to a third embodiment. [Figure 26] FIG. 13 is a diagram showing an example of a caution displayed on a display unit of a display device provided in the display system of the first embodiment in a sixth operation example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the drawings, the same or equivalent elements are denoted by the same reference numerals, and duplicated descriptions will be omitted.

[0017] 1. First embodiment 1.1 Display System FIG. 1 is a block diagram of a display system according to the first embodiment.

[0018] A display system 1 according to the first embodiment shown in FIG. 1 displays video and outputs audio.

[0019] As shown in FIG. 1, a display system 1 includes an external device 11 and a display device 12.

[0020] The display system 1 includes one external device 11. The display system 1 may include two or more external devices.

[0021] The external device 11 is a source device that complies with the High Definition Multimedia Interface (HDMI (registered trademark)) standard. The external device 11 is, for example, a player, a recorder, a tuner, an amplifier, etc. The player is a device that outputs a video signal and an audio signal corresponding to video data and audio data stored in the player itself or stored in a recording medium, and is, for example, a digital versatile disc (DVD) player, a Blu-ray disc (BD) player, a hard disk drive (HDD) player, a game console, etc. The recorder is a device that stores video data and audio data corresponding to input video signals and audio signals, respectively, and is, for example, a DVD recorder, a BD recorder, an HDD recorder, etc. The tuner is a device that outputs a video signal and an audio signal corresponding to a received broadcast wave or broadcast data, and is, for example, a terrestrial digital tuner, a satellite broadcast (BS) tuner, a communication satellite (CS) tuner, a network tuner, etc. The amplifier is a device that outputs audio corresponding to an input audio signal.

[0022] The display device 12 is a sink device that complies with the HDMI standard, and is, for example, a television, a monitor for a personal computer, a projector, or digital signage.

[0023] The HDMI standard was developed to transmit video, audio, etc. over a single cable.

[0024] When the external device 11 is connected to the display device 12, the external device 11 transmits an extended display identification data (EDID) request 21. The display device 12 receives the transmitted EDID request 21 and transmits an EDID 22 in response to the received EDID request 21. The external device 11 receives the transmitted EDID 22, determines the format of the HDMI signal 23 to be transmitted based on the received EDID 22, and transmits the HDMI signal 23 having the determined format. The display device 12 receives the transmitted HDMI signal 23, displays video corresponding to the received HDMI signal 23, and outputs audio corresponding to the received HDMI signal 23.

[0025] The transmitted EDID 22 is data unique to the display device 12 and is stored in the display device 12. The EDID 22 indicates information for identifying the display device 12, information indicating the capabilities of the display device 12, etc. The information for identifying the display device 12 indicates, for example, a manufacturer identifier (ID), a model ID, a serial number, etc. The information indicating the capabilities of the display device 12 indicates, for example, the maximum resolution and maximum refresh rate supported by the display device 12.

[0026] The transmitted HDMI signal 23 includes external device information 31. The external device information 31 identifies the external device 11.

[0027] 1.2 External device information FIG. 2 is a diagram showing the contents of external device information included in an HDMI signal transmitted by an external device provided in the display system of the first embodiment.

[0028] As shown in FIG. 2, the external device information 31 indicates, for example, at least one selected from the group consisting of a type 41, a device name 42, and a manufacturer 43 of the external device 11.

[0029] The HDMI signal 23 includes a video signal, an audio signal, and a control signal. The video signal includes packet data. The packet data includes a Source Product Description InfoFrame (SPD InfoFrame) packet. The SPD InfoFrame packet includes auxiliary information indicating a type 41 and a device name 42 of the external device 11. The type 41 of the external device 11 is selected from device categories defined in a standard for device-to-device control (CEC) included in the HDMI standard. The control signal complies with the standard. Hereinafter, a control signal that complies with the standard is referred to as a "CEC signal." The CEC signal includes information indicating a manufacturer 43 of the external device 11. The information is, for example, a 3-bit vendor code managed by the Institute of Electrical and Electronics Engineers (IEEE). The vendor code is also called an Organizationally Unique Identifier (OUI).

[0030] The external device 11 and the display device 12 can control each other by exchanging CEC signals. For this reason, the CEC signal provides a link function that links the external device 11 and the display device 12 with each other.

[0031] 1.3 External equipment As shown in FIG. 1, the external device 11 includes a determination unit 51 and an output unit 52.

[0032] The determination unit 51 transmits an EDID request 21 to the display device 12 in conjunction with the external device 11 being connected to the display device 12. The determination unit 51 receives an EDID 22 from the display device 12, and determines the format of the HDMI signal 23 to be transmitted based on the received EDID 22. For example, the determination unit 51 determines the resolution of the video signal included in the HDMI signal 23 based on the maximum resolution supported by the display device 12, which is indicated by the EDID 22. If the maximum resolution is 4K or less, the determination unit 51 sets the resolution of the video signal to 4K or less.

[0033] The output unit 52 stores the external device information 31. The output unit 52 includes the stored external device information 31 in the HDMI signal 23 to be transmitted.

[0034] The decision unit 51 and the output unit 52 are implemented by a microcontroller and peripheral circuits. The microcontroller includes a processor and a memory. The processor executes a control program stored in the memory to operate the microcontroller and the peripheral circuits as the decision unit 51 and the output unit 52. All or part of the processing performed by the microcontroller may be performed by a dedicated electronic circuit.

[0035] 1.4 Display device As shown in FIG. 1, the display device 12 includes a plurality of connection terminals 61a, 61b, 61c and 61d, a plurality of HDMI signal processing units 62a, 62b, 62c and 62d, a plurality of EDID rewriting units 63a, 63b, 63c and 63d, a correspondence information database 64, a comparison unit 65, an alarm processing unit 66, an alarm unit 67, an operation unit 68 and a setting unit 69.

[0036] In the first embodiment, the multiple connection terminals 61a, 61b, 61c, and 61d are four connection terminals, the multiple HDMI signal processing units 62a, 62b, 62c, and 62d are four HDMI signal processing units, and the multiple EDID rewriting units 63a, 63b, 63c, and 63d are four EDID rewriting units. However, the display device 12 may be provided with three or less or five or more connection terminals, three or less or five or more HDMI signal processing units, and three or less or five or more EDID rewriting units.

[0037] An external device 11 can be connected to each of the connection terminals 61 included in the connection terminals 61a, 61b, 61c, and 61d via an HDMI cable. Fig. 2 shows a state in which the external device 11 is connected to the connection terminal 61a. Each connection terminal 61 is also called an HDMI connector, an input terminal, etc.

[0038] Each connection terminal 61 receives an EDID request 21 from an external device 11 connected to the corresponding connection terminal 61 via an HDMI cable, and transmits an EDID 22 to the external device 11 via the HDMI cable.

[0039] Each connection terminal 61 receives an HDMI signal 23 from the external device 11 via an HDMI cable.

[0040] The HDMI signal processing units 62a, 62b, 62c, and 62d are electrically connected to the connection terminals 61a, 61b, 61c, and 61d, respectively.

[0041] An EDID request 21 received by the connection terminal 61 to which the HDMI signal processing unit 62 is connected is input to each HDMI signal processing unit 62 included in the HDMI signal processing units 62a, 62b, 62c, and 62d. In response to the input of the EDID request 21, each HDMI signal processing unit 62 outputs the EDID 22 transmitted by the connection terminal 61. In response to the input of the EDID request 21, each HDMI signal processing unit 62 outputs the stored EDID 22.

[0042] The HDMI signal 23 received by the connection terminal 61 to which the HDMI signal processing unit 62 is connected is input to each HDMI signal processing unit 62. Each HDMI signal processing unit 62 acquires external device information 31 from the input HDMI signal 23, and outputs the acquired external device information 31 to a correspondence information database 64.

[0043] The HDMI signal processing units 62a, 62b, 62c, and 62d output the connection terminal information 32a, 32b, 32c, and 32d, respectively, to the collation unit 65. The output connection terminal information 32a, 32b, 32c, and 32d indicates both or one of the functions and image quality supported by the connection terminals 61a, 61b, 61c, and 61d, respectively. The functions include at least one selected from the group consisting of a variable refresh rate (VRR) function, an automatic low latency mode (ALLM) function, an audio return channel (ARC) function, and an enhanced audio return channel (eARC) function, for example. The image quality includes at least one selected from the group consisting of a resolution and a refresh rate, for example.

[0044] The EDID rewriting units 63a, 63b, 63c, and 63d are electrically connected to the HDMI signal processing units 62a, 62b, 62c, and 62d, respectively, and are electrically connected to a setting unit 69.

[0045] The EDID rewriting units 63a, 63b, 63c, and 63d respectively receive the EDID rewriting requests 33a, 33b, 33c, and 33d output by the setting unit 69. The EDID rewriting units 63a, 63b, 63c, and 63d rewrite the EDID 22 stored by the HDMI signal processing units 62a, 62b, 62c, and 62d in accordance with the input EDID rewriting requests 33a, 33b, 33c, and 33d. As a result, the EDID rewriting units 63a, 63b, 63c, and 63d change the EDID 22 output by the HDMI signal processing units 62a, 62b, 62c, and 62d in accordance with the EDID rewriting requests 33a, 33b, 33c, and 33d. As a result, the EDID rewriting units 63a, 63b, 63c and 63d change the format of the HDMI signal 23 transmitted by the external device 11 connected to the connection terminals 61a, 61b, 61c and 61d in accordance with the EDID rewriting requests 33a, 33b, 33c and 33d, respectively.

[0046] The correspondence information database 64 stores a plurality of pieces of external device information and a plurality of pieces of correspondence information associated with the plurality of pieces of external device information. Each of the plurality of pieces of stored external device information indicates, for example, at least one type selected from a group consisting of the type, device name, and manufacturer of the external device. The correspondence information associated with the stored external device information indicates, for example, at least one type selected from a group consisting of functions and image quality supported by the external device. The functions include, for example, at least one type selected from a group consisting of a VRR function, an ALLM function, an ARC function, and an eARC function. The image quality includes, for example, at least one type selected from a group consisting of a resolution and a refresh rate. The plurality of pieces of external device information and the plurality of pieces of correspondence information are stored in the correspondence information database 64 by the developer based on advance information obtained at a plug fest or the like. The stored plurality of pieces of external device information and the plurality of pieces of correspondence information are updated by a software update of the display device 12.

[0047] The output external device information 31 is input to the corresponding information database 64. The corresponding information database 64 searches for corresponding information 34 associated with the input external device information 31. The corresponding information database 64 outputs the searched corresponding information 34 to the collation unit 65. The output corresponding information 34 indicates, for example, at least one type selected from the group consisting of functions and image quality supported by the external device 11.

[0048] The output correspondence information 34 and the connection terminal information 32a, 32b, 32c, and 32d are input to the collation unit 65. The collation unit 65 collates the input correspondence information 34 and the connection terminal information 32a, 32b, 32c, and 32d to obtain at least one of an appropriate connection 35 of the external device 11 to the connection unit 71 having the connection terminals 61a, 61b, 61c, and 61d and an appropriate setting 36 of the display device 12, and outputs the obtained at least one of the appropriate connection 35 and the appropriate setting 36 of the display device 12 to the notification processing unit 66.

[0049] At least one of the output appropriate connection 35 and appropriate setting 36 is input to the notification processing unit 66. When at least one of the appropriate connection 35 and appropriate setting 36 is input, the notification processing unit 66 causes the notification unit 67 to notify a caution indicating that at least one of the appropriate connection 35 and appropriate setting 36 exists and a guide showing a method for making at least one of the appropriate connection 35 and appropriate setting 36. This makes it possible to urge the user to make the appropriate connection 35 or the appropriate setting 36. In the first embodiment, the notification unit 67 includes a display unit 81, and causing the notification unit 67 to notify the caution and the guide includes causing the display unit 81 to display the caution and the guide. The notification unit 67 may include a notification unit other than the display unit 81, and causing the notification unit 67 to notify the caution and the guide may include other than displaying the caution and the guide on the display unit 81. For example, the notification unit 67 may include a sound generating unit, and causing the notification unit 67 to notify the cautions and guidance may include causing the sound generating unit to sound the cautions and guidance.

[0050] The setting unit 69 switches the settings of the display device 12 in accordance with the operation performed on the operation unit 68 .

[0051] The HDMI signal processing units 62a, 62b, 62c, and 62d, the EDID rewriting units 63a, 63b, 63c, and 63d, the correspondence information database 64, the comparison unit 65, the notification processing unit 66, and the setting unit 69 are implemented by a microcontroller and peripheral circuits. The microcontroller includes a processor and a memory. The processor executes a control program stored in the memory to operate the microcontroller and peripheral circuits as the HDMI signal processing units 62a, 62b, 62c, and 62d, the EDID rewriting units 63a, 63b, 63c, and 63d, the correspondence information database 64, the comparison unit 65, the notification processing unit 66, and the setting unit 69. All or part of the processing performed by the microcontroller may be performed by a dedicated electronic circuit.

[0052] 1.5 HDMI signal processing section FIG. 3 is a block diagram of a part of a display device provided in the display system of the first embodiment.

[0053] As shown in FIG. 3, each HDMI signal processing unit 62 includes a receiving unit 91, an acquiring unit 92, an EDID storing unit 93, a decoding unit 94, and a connection terminal information database 95.

[0054] The receiving unit 91 receives the HDMI signal 23 input to each HDMI signal processing unit 62. As a result, the receiving unit 91 receives external device information 31 from the external device 11 connected to the connection unit 71 including the connection terminals 61a, 61b, 61c, and 61d. The receiving unit 91 outputs the input HDMI signal 23 to the acquiring unit 92.

[0055] The output HDMI signal 23 is input to the acquisition unit 92. The acquisition unit 92 acquires the external device information 31 from the input HDMI signal 23, and outputs the acquired external device information 31 to the correspondence information database 64.

[0056] The EDID storage unit 93 stores the EDID 22. The EDID request 21 input to each HDMI signal processing unit 62 is input to the EDID storage unit 93. The EDID storage unit 93 outputs the EDID 22 output from each HDMI signal processing unit 62. In response to the input of the EDID request 21, the EDID storage unit 93 outputs the stored EDID 22. The EDID storage unit 93 outputs the stored EDID 22 to the decoding unit 94 before an external device 11 is connected to the connection terminal 61 to which each HDMI signal processing unit 62 is connected.

[0057] The output EDID 22 is input to the decoding unit 94. The decoding unit 94 decodes the input EDID 22 to obtain information 37 constituting the connection terminal information 32, and outputs the obtained information 37 to the connection terminal information database 95.

[0058] The output information 37 and the ARC / eARC compatibility information 38 are input to the connection terminal information database 95. The ARC / eARC compatibility information 38 is included in the CEC signal. The connection terminal information database 95 stores the connection terminal information 32 including the input information 37 and the ARC / eARC compatibility information 38, and outputs the stored connection terminal information 32 to the collation unit 65. The output connection terminal information 32 changes when the settings of the display device 12 are changed.

[0059] Thus, the acquisition unit 92, the EDID storage unit 93, the decode unit 94, the connection terminal information database 95, and the collation unit 65 constitute an analysis unit 101 that analyzes the external device information 31 and acquires at least one of the appropriate connection 35 and the appropriate setting 36. The analysis unit 101 acquires the correspondence information 34 from the external device information 31, and acquires at least one of the appropriate connection 35 and the appropriate setting 36 from the acquired correspondence information 34. 1.6 Notification Processing Section As shown in FIG. 1, the notification processing unit 66 includes a caution display control unit 111, a caution display unit 112, a guide display control unit 113, and a guide display unit 114.

[0060] The caution display control unit 111 instructs the caution display unit 112 to display a caution on the display unit 81. When instructed to display a caution on the display unit 81, the caution display unit 112 displays the caution on the display unit 81 and notifies the guide display control unit 113 that the caution has been displayed on the display unit 81.

[0061] The guide display control unit 113 instructs the guide display unit 114 to display a guide on the display unit 81 when a specific operation is performed on the operation unit 68 after being notified that a caution has been displayed on the display unit 81. The guide display unit 114 displays a guide on the display unit 81 when instructed to display a guide on the display unit 81. Thereby, the notification processing unit 66 displays a guide on the display unit 81 when a specific operation is performed on the operation unit 68 after a caution has been displayed on the display unit 81.

[0062] 1.7 Display Settings The settings of the display device 12 include settings related to image quality, settings related to game functions, and settings related to the ARC function and eARC function.

[0063] 1.8 Image quality settings The HDMI standard includes the HDMI 1.4 standard, the HDMI 2.0 standard, and the HDMI 2.1 standard.

[0064] The HDMI 1.4 standard was released in December 2009. The maximum transmission bandwidth in the HDMI 1.4 standard is 10.2 Gbps. The HDMI 1.4 standard supports full high-definition (full HD) video and 4K video with a low frame rate.

[0065] The HDMI 2.0 standard was released in September 2013. It is the successor to the HDMI 1.4 standard. The maximum transmission bandwidth of the HDMI 2.0 standard is 18 Gbps. The HDMI 2.0 standard supports 4K 60Hz video.

[0066] The HDMI 2.1 standard was released in November 2017. The HDMI 2.1 standard integrates the functions of the HDMI 2.0 standard and the new functions added in the HDMI 2.1 standard. The maximum transmission bandwidth of the HDMI 2.1 standard is 48 Gbps. The HDMI 2.1 standard supports 8K 120Hz video and 4K 120Hz video.

[0067] Image quality settings can be switched between HDMI 2.1 mode and HDMI 1.4 mode.

[0068] When the image quality setting is set to the HDMI 2.1 mode, the display device 12 enables all of the HDMI functions of the display device 12. The display device 12 can display video up to 8K 60Hz. The display device 12 also includes an HDMI Forum-Vendor Specific Data Block (HF-VSDB) defined in the HDMI 2.0 standard in the EDID 22 that it transmits. The HDMI 2.1 mode is also called a full mode, etc.

[0069] When the image quality setting is set to the HDMI 1.4 mode, the display device 12 disables a part of the HDMI function of the display device 12. The display device 12 can only display images up to 4K 30Hz. The display device 12 does not include HF-VSDB in the EDID 22 that it transmits. The HDMI 1.4 mode is also called a compatible mode, etc.

[0070] When the external device 11 connected to the display device 12 is an external device that complies with the HDMI 2.1 standard, the image quality is set to the HDMI 2.1 mode, which allows the display device 12 to display images up to 8K 60Hz.

[0071] However, if the external device 11 connected to the display device 12 is an old external device that complies with the HDMI 1.4 standard, when the image quality setting is set to the HDMI 2.1 mode, the external device 11 may erroneously recognize the HF-VSDB and malfunction. In this case, the image quality setting is set to the HDMI 1.4 mode.

[0072] 1.9 Game Features Settings The setting related to the game function can be switched between a setting for enabling the game function and a setting for disabling the game function.

[0073] When the game function is enabled, the VRR function and the ALLM function are enabled.

[0074] When the game function is disabled, the VRR function and the ALLM function are disabled.

[0075] When the VRR function is enabled, the display device 12 automatically absorbs the time lag between the frames of the video signal transmitted by the external device 11 and the frames of the video to be displayed. This makes it possible to suppress stuttering, display delays, and the like in the displayed video. This makes it possible to suppress deterioration in visibility when the user views the displayed video and operability when the user views the displayed video and performs operations.

[0076] When the ALLM function is enabled, the display device 12 automatically suppresses a display delay of the image to be displayed when specific information is transmitted from the external device 11, even if an operation to instruct suppression of a display delay of the image to be displayed is not performed on the operation unit 68. This makes it possible to shorten the time until an operation performed by the user on the external device 11 is reflected in the image displayed by the display device 12. This makes it possible to suppress deterioration of operability when the user performs an operation while viewing the displayed image.

[0077] When the game function is enabled, it is possible to suppress stuttering, display delays, and the like in the displayed image. However, when the game function is enabled, the function for improving the image quality of the displayed image cannot be used. For this reason, when suppressing stuttering, display delays, and the like in the image is given priority over improving the image quality of the image, the settings related to the game function are set to enable the game function. On the other hand, when improving the image quality of the displayed image is given priority over suppressing stuttering, display delays, and the like in the displayed image, the settings related to the game function are set to disable the game function.

[0078] 1.10 Settings for the ARC and eARC functions Settings related to the ARC function and eARC function can be switched between a setting that disables the eARC function and a setting that enables the eARC function.

[0079] If the external device 11 is an amplifier or the like capable of outputting audio and supports the ARC function, and the settings related to the ARC function and eARC function are set to disable the eARC function, the display device 12 does not output audio, but transmits an audio signal to the external device 11 by the ARC method, and causes the external device 11 to output audio. The number of channels supported by the ARC method is two. The ARC method does not support lossless compressed audio such as Dolby TrueHD and DTS-HD Master Audio.

[0080] When the external device 11 is an amplifier or the like capable of outputting audio and supports the eARC function, and the settings related to the ARC function and the eARC function are set to enable the eARC function, the display device 12 does not output audio, but transmits an audio signal to the external device 11 by the eARC method, and causes the external device 11 to output audio. The maximum number of supported channels in the eARC method is 32 channels. The eARC method supports lossless compressed audio such as Dolby TrueHD and DTS-HD Master Audio. The eARC method is an extension of the ARC method. The sound quality of an audio signal transmitted by the eARC method is higher than that of an audio signal transmitted by the ARC method. The number of channels of an audio signal transmitted by the eARC method is greater than the number of channels of an audio signal transmitted by the ARC method.

[0081] When audio signals are transmitted using the eARC method, audio signals with high sound quality and a large number of channels can be transmitted. However, if there is a problem with the quality of the HDMI cable connecting the external device 11 and the display device 12, audio abnormalities such as noise will occur when audio signals are transmitted using the eARC method. For this reason, if there is a problem with the quality of the HDMI cable, the settings related to the ARC function and the eARC function are set to disable the eARC function.

[0082] 1.11 Examples of image quality and functions supported by connection terminals FIG. 4 is a table showing examples of the highest image quality and functions supported by each connection terminal of the display device provided in the display system of the first embodiment.

[0083] 4, when the image quality setting is set to the HDMI 2.1 mode, the highest image quality supported by the connection terminals 61a and 61b is 4K 60Hz, and the highest image quality supported by the connection terminals 61c and 61d is 8K 60Hz.

[0084] When the image quality setting is set to HDM1.4 mode, the highest image quality supported by the connection terminals 61a, 61b, 61c, and 61d is 4K 30Hz.

[0085] When the image quality setting is switched to the HDMI 2.1 mode, the setting unit 69 outputs EDID rewrite requests 33c and 33d to cause the EDID rewrite units 63c and 63d to rewrite the EDID 22 to be output. The rewritten EDID 22 indicates that the highest image quality supported by the display device 12 is 8K 60Hz.

[0086] When the image quality setting is switched to the HDMI 1.4 mode, the setting unit 69 outputs EDID rewrite requests 33c and 33d to cause the EDID rewriting units 63c and 63d to rewrite the EDID 22 to be output. The rewritten EDID 22 indicates that the highest image quality supported by the display device 12 is 4K 30 Hz.

[0087] The connection terminals 61a and 61b do not support the VR function and the ALLM function, whether the setting related to the game function is set to enable the game function or to disable the game function. The connection terminals 61c and 61d support the VR function and the ALLM function when the setting related to the game function is set to enable the game function, but do not support the VR function and the ALLM function when the setting related to the game function is set to disable the game function.

[0088] When the setting related to the game function is switched to a setting that enables the game function, the setting unit 69 outputs EDID rewrite requests 33c and 33d and causes the EDID rewrite units 63c and 63d to respectively rewrite the output EDID 22. The rewritten EDID 22 indicates that the display device 12 supports the VR function and the ALLM function.

[0089] When the setting related to the game function is switched to a setting that disables the game function, the setting unit 69 outputs EDID rewrite requests 33c and 33d to cause the EDID rewrite units 63c and 63d to respectively rewrite the output EDID 22. The rewritten EDID 22 indicates that the display device 12 does not support the VR function and the ALLM function.

[0090] The connection terminals 61a, 61b, and 61d do not support the ARC function and the eARC function regardless of whether the settings related to the ARC function and the eARC function are set to enable the eARC function or to disable the eARC function. The connection terminal 61c supports the eARC function when the settings related to the ARC function and the eARC function are set to enable the eARC function, and supports the ARC function but does not support the eARC function when the settings related to the ARC function and the eARC function are set to disable the eARC function.

[0091] When the settings related to the ARC function and the eARC function are switched to a setting that enables the eARC function, the setting unit 69 outputs an EDID rewrite request 33c and causes the EDID rewriting unit 63c to rewrite the output EDID 22. The rewritten EDID 22 indicates that the display device 12 supports the eARC function.

[0092] When the settings related to the ARC function and the eARC function are switched to a setting that disables the eARC function, the setting unit 69 outputs an EDID rewrite request 33c to cause the EDID rewriting unit 63c to rewrite the output EDID 22. The rewritten EDID 22 indicates that the display device 12 does not support the eARC function but supports the ARC function.

[0093] 1.12 Proper connection of external devices to the connectors 5 and 6 are diagrams showing appropriate connections of external devices provided in the display system to a connection section of a display device provided in the display system of the first embodiment.

[0094] As shown in Figures 5 and 6, suitable connection 35 of external device 11 to connection portion 71 involves connection of external device 11 to suitable connection terminals 131 included in connection terminals 61a, 61b, 61c and 61d.

[0095] 5, when the external device 11 corresponds to a specific function 132 and the connection terminals 61a, 61b, 61c, and 61d include a first connection terminal 134 corresponding to the specific function 132 and a second connection terminal 135 not corresponding to the specific function 132, the collation unit 65 includes the first connection terminal 134 in the appropriate connection terminals 131 and does not include the second connection terminal 135 in the appropriate connection terminals 131. The specific function 132 includes at least one function selected from the group consisting of a VRR function 141, an ALLM function 142, an ARC function 143, and an eARC function 144, for example.

[0096] For example, if the external device 11 supports the VRR function 141 and the ALLM function 142, the settings related to the game function are set to enable the game function, and the connection terminals 61a, 61b, 61c, and 61d include the connection terminal 61c that supports the VRR function and the ALLM function and the connection terminals 61a, 61b, and 61d that do not support the VRR function and the ALLM function, the comparison unit 65 includes the connection terminal 61c in the appropriate connection terminals 131, and does not include the connection terminals 61a, 61b, and 61d in the appropriate connection terminals 131.

[0097] 6, when the external device 11 corresponds to a specific image quality 133, and the connection terminals 61a, 61b, 61c, and 61d include a first connection terminal 134 corresponding to the specific image quality 133 and a second connection terminal 135 not corresponding to the specific image quality 133, the collation unit 65 includes the first connection terminal 134 in the appropriate connection terminals 131, and does not include the second connection terminal 135 in the appropriate connection terminals 131. The specific image quality 133 includes at least one type selected from the group consisting of a specific resolution 151 and a specific refresh rate 152, for example.

[0098] For example, if the external device 11 supports 8K60Hz, the image quality settings are set to HDMI2.1 mode, and the connection terminals 61a, 61b, 61c, and 61d include connection terminals 61c and 61d that support 8K60Hz and connection terminals 61a and 61b that do not support 8K60Hz, the comparison unit 65 will include connection terminals 61c and 61d in the appropriate connection terminals 131, and will not include connection terminals 61a and 61b in the appropriate connection terminals 131.

[0099] 1.13 Proper Display Settings 7 and 8 are diagrams showing appropriate settings for the display device provided in the display system of the first embodiment.

[0100] 7, when the external device 11 corresponds to a specific function 132 and the setting unit 69 switches the setting of the display device 12 between a first setting 136 corresponding to the specific function 132 and a second setting 137 not corresponding to the specific function 132, the collation unit 65 includes the first setting 136 in the appropriate settings 36 and does not include the second setting 137 in the appropriate settings 36. The specific function 132 includes at least one function selected from the group consisting of a VRR function 141, an ALLM function 142, an ARC function 143, and an eARC function 144, for example.

[0101] For example, if the external device 11 supports the VRR function and the ALLM function, and the setting unit 69 switches the settings related to the game function between a setting that supports the VRR function and the ALLM function and enables the game function, and a setting that does not support the VRR function and the ALLM function and disables the game function, the comparison unit 65 includes the setting that enables the game function in the appropriate setting 36, and does not include the setting that disables the game function in the appropriate setting 36.

[0102] 8, when the external device 11 corresponds to a specific image quality 133 and the setting unit 69 switches the setting of the display device 12 between a first setting 136 corresponding to the specific image quality 133 and a second setting 137 not corresponding to the specific image quality 133, the collation unit 65 includes the first setting 136 in the appropriate settings 36 and does not include the second setting 137 in the appropriate settings 36. The specific image quality 133 includes at least one type selected from the group consisting of a specific resolution 151 and a specific refresh rate 152, for example.

[0103] For example, if the external device 11 supports 8K60Hz and the setting unit 69 switches the image quality settings between the HDMI2.1 mode that supports 8K60Hz and the HDMI1.4 mode that does not support 8K60Hz, the comparison unit 65 includes the HDMI2.1 mode in the appropriate settings 36 and does not include the HDMI1.4 mode in the appropriate settings 36.

[0104] 1.14 Processing flow 9A, 9B, and 9C are flowcharts showing the flow of processing performed by the display device provided in the display system of the first embodiment.

[0105] The display device 12 executes steps S101 to S119 shown in FIGS. 9A, 9B, and 9C.

[0106] In step S 101 , the receiving unit 91 detects that the external device 11 is connected to the connection terminal 61 .

[0107] In the following step S102, the receiving unit 91 receives the HDMI signal 23 transmitted by the connected external device 11.

[0108] In the following step S103, the acquisition unit 92 determines whether or not it is possible to acquire the external device information 31 contained in the received HDMI signal 23. If it is determined that the external device information 31 can be acquired, step S104 is executed. If it is determined that the external device information 31 cannot be acquired, step S119 is executed.

[0109] In step S104, the acquisition unit 92 acquires the external device information 31 included in the received HDMI signal 23, and inputs the acquired external device information 31 to the correspondence information database 64. Furthermore, the correspondence information database 64 outputs the correspondence information 34 associated with the input external device information 31. Furthermore, the collation unit 65 acquires the output correspondence information 34.

[0110] In the next step S105, the collation unit 65 judges whether or not the connection terminal 61 to which the external device 11 is connected is an appropriate connection terminal 131 based on the output correspondence information 34 and the previously acquired connection terminal information 32a, 32b, 32c, and 32d. If it is judged that the connection terminal 61 is an appropriate connection terminal 131, step S112 is executed. If it is judged that the connection terminal 61 is not an appropriate connection terminal 131, step S106 is executed.

[0111] In step S106, the caution display control unit 111 instructs the caution display unit 112 to display a caution on the display unit 81. The caution display unit 112 also displays a caution on the display unit 81, and notifies the guide display control unit 113 that the caution has been displayed on the display unit 81. The displayed caution indicates that a suitable connection terminal 131 is present.

[0112] In steps S105 and S106, the notification processing unit 66 displays a caution indicating that an appropriate connection terminal 131 exists on the display unit 81 when the connection terminal 61 to which the external device 11 is connected is different from the appropriate connection terminal 131. In this way, the notification processing unit 66 displays a caution indicating that an appropriate connection 35 exists on the display unit 81 when the current connection of the external device 11 to the connection unit 71 is different from the appropriate connection 35. In this way, when the connection terminal 61 to which the external device 11 is connected does not support the specific function 132 and / or the specific image quality 133 supported by the external device 11, the display device 12 displays a caution indicating that an appropriate connection terminal 131 corresponding to the specific function 132 and / or the specific image quality 133 exists. In this way, the user can recognize the cause of the display device 12 being unable to exhibit the specific function 132 and / or the specific image quality 133. In addition, the user can recognize the necessity of connecting the external device 11 to the appropriate connection terminal 131 corresponding to the specific function 132 and / or the specific image quality 133.

[0113] In the next step S107, the guide display control unit 113 determines whether or not a specific operation for instructing to display the connection guide has been performed on the operation unit 68. If it is determined that the specific operation has been performed, step S108 is executed. If it is determined that the specific operation has not been performed, step S112 is executed.

[0114] In step S108, the guide display control unit 113 instructs the guide display unit 114 to display a connection guide on the display unit 81. Furthermore, the guide display unit 114 displays the connection guide on the display unit 81. The displayed connection guide indicates a method for connecting the external device 11 to an appropriate connection terminal 131.

[0115] By steps S106 to S108, when a specific operation is performed on the operation unit 68 to instruct the display unit 81 to display a caution indicating that an appropriate connection terminal 131 exists and then a connection guide is displayed on the display unit 81. As a result, when a specific operation is performed on the operation unit 68 after the display unit 81 displays a caution indicating that an appropriate connection 35 exists, the notification processing unit 66 causes the display unit 81 to display a connection guide indicating how to make the appropriate connection 35.

[0116] In the next step S109, the guide display control unit 113 determines whether or not the connection terminal 61 to which the external device 11 is connected has been changed. If it is determined that the connection terminal 61 has been changed, step S110 is executed and then step S101 is executed again. If it is determined that the connection terminal 61 has not been changed, step S111 is executed.

[0117] In step S110, the guide display control unit 113 instructs the guide display unit 114 to end the display of the connection guide on the display unit 81. In addition, the guide display unit 114 ends the display of the connection guide on the display unit 81.

[0118] In steps S101 to S110, if the external device 11 is connected to a new connection terminal 61 different from the connection terminal 61 to which it was previously connected after the connection guide was displayed, the display of the connection guide is terminated, and it is determined again whether the new connection terminal 61 is an appropriate connection terminal 131. If it is determined that the new connection terminal 61 is not an appropriate connection terminal 131, a caution is displayed again. This process is repeatedly executed until the external device 11 is connected to the appropriate connection terminal 131.

[0119] In step S111, the guide display control unit 113 determines whether or not an operation to instruct to end the display of the connection guide has been performed on the operation unit 68. If it is determined that the operation has been performed, step S112 is executed. If it is determined that the operation has not been performed, step S109 is executed again.

[0120] According to steps S109 to S111, after the connection guide is displayed, the display of the connection guide is terminated when the connection terminal 61 to which the external device 11 is connected is changed or when an operation to instruct to terminate the display of the connection guide is performed on the operation unit 68. In other cases, the display of the connection guide continues.

[0121] In step S112, the collation unit 65 determines whether or not the setting of the display device 12 is the appropriate setting 36 based on the output correspondence information 34 and the previously acquired connection terminal information 32a, 32b, 32c, and 32d. If it is determined that the setting of the display device 12 is the appropriate setting 36, step S119 is executed. If it is determined that the setting of the display device 12 is not the appropriate setting 36, step S113 is executed.

[0122] In step S113, the caution display control unit 111 instructs the caution display unit 112 to display a caution on the display unit 81. The caution display unit 112 also causes the display unit 81 to display a caution, and notifies the guide display control unit 113 that the caution has been displayed on the display unit 81. The displayed caution indicates that an appropriate setting 36 is present.

[0123] In steps S112 and S113, the notification processing unit 66 causes the display unit 81 to display a caution indicating that the appropriate setting 36 exists when the setting of the display device 12 is different from the appropriate setting 36. As a result, when the setting of the display device 12 does not correspond to the specific function 132 and / or the specific image quality 133 supported by the external device 11, the display device 12 displays a caution indicating that the appropriate setting 36 corresponding to the specific function 132 and / or the specific image quality 133 exists. As a result, the user can recognize the cause of the display device 12 being unable to exhibit the specific function 132 and / or the specific image quality 133. In addition, the user can recognize the necessity of changing the setting of the external device 11 to the appropriate setting 36 corresponding to the specific function 132 and / or the specific image quality 133.

[0124] In the next step S114, the guide display control unit 113 determines whether or not a specific operation for instructing to display a setting guide has been performed on the operation unit 68. If it is determined that the specific operation has been performed, step S115 is executed. If it is determined that the specific operation has not been performed, step S119 is executed.

[0125] In step S115, the guide display control unit 113 instructs the guide display unit 114 to display a setting guide on the display unit 81. Furthermore, the guide display unit 114 displays the setting guide on the display unit 81. The displayed setting guide shows how to set the display device 12 to an appropriate setting 36.

[0126] By steps S112 to S114, when a specific operation is performed on the operation unit 68 to instruct the display unit 81 to display a caution indicating that appropriate settings 36 exist and then to display a setting guide, the notification processing unit 66 causes the display unit 81 to display a setting guide showing how to set the display device 12 to the appropriate settings 36.

[0127] In the next step S116, the guide display control unit 113 determines whether or not an operation to change the setting of the display device 12 as shown in the displayed setting guide has been performed on the operation unit 68. If it is determined that the operation has been performed, step S117 is executed, followed by step S119. If it is determined that the operation has not been performed, step S118 is executed.

[0128] In step S117, the guide display control unit 113 instructs the guide display unit 114 to end the display of the setting guide on the display unit 81. In addition, the guide display unit 114 ends the display of the setting guide on the display unit 81.

[0129] In step S118, the guide display control unit 113 determines whether or not an operation to instruct to end the display of the setting guide has been performed on the operation unit 68. If it is determined that the operation has been performed, step S119 is executed. If it is determined that the operation has not been performed, step S116 is executed again.

[0130] According to steps S116 to S118, after the setting guide is displayed, if an operation to change the settings of the display device 12 as shown in the setting guide or an operation to instruct to end the display of the setting guide is performed on the operation unit 68, the display of the setting guide is ended. In other cases, the display of the setting guide continues.

[0131] In step S119, the display unit 81 displays a video corresponding to the HDMI signal received by the receiving unit 91.

[0132] 1.15 Examples of cautions and connection guides Fig. 10 is a diagram showing a first example of a caution displayed on the display unit of the display device included in the display system of the first embodiment. Fig. 11 is a diagram showing a first example of a connection guide displayed on the display unit of the display device included in the display system of the first embodiment.

[0133] The caution 161 shown in FIG. 10 and the connection guide 162 shown in FIG. 11 are the caution and connection guide that are displayed when one external device 11 is connected to the connection terminal 61a and the appropriate connection terminals 131 for the one external device 11 are the connection terminals 61c and 61d.

[0134] As shown in FIG. 10, the caution 161 includes text messages 171 and 172 .

[0135] The text message 171 indicates that there is a suitable connection terminal 131 for an external device 11 called "Device A" connected to the connection terminal 61a called "Input 1", and that the suitable connection terminal 131 is the connection terminals 61c and 61d called "Input 3 / 4". All or part of the text message 171 may be replaced with a still image, a moving image, sound, etc.

[0136] The text message 172 indicates that the operation member that accepts a specific operation to instruct displaying the connection guide 162 is an operation member called a "decision key." The text message 172 may be replaced with a still image, a moving image, a sound, or the like.

[0137] As shown in FIG. 11, the connection guide 162 includes a still image 181 .

[0138] The still image 181 shows a method for connecting the external device 11 to the connection terminal 61c or 61d. The still image 181 may be replaced with a text message, a moving image, a sound, or the like.

[0139] Fig. 12 is a diagram showing a second example of a caution displayed on the display unit of the display device included in the display system of the first embodiment. Fig. 13 is a diagram showing a second example of a connection guide displayed on the display unit of the display device included in the display system of the first embodiment.

[0140] Caution 191 shown in FIG. 12 and connection guide 192 shown in FIG. 13 are cautions and connection guides that are displayed when one of two external devices 11 is connected to connection terminal 61a, the appropriate connection terminals 131 for one of the two external devices 11 are connection terminals 61c and 61d, and the other of the two external devices 11 is connected to connection terminal 61b, and the appropriate connection terminal 131 for the other of the two external devices 11 is connection terminal 61c.

[0141] As shown in FIG. 12, the caution 191 includes text messages 201, 202, and 203.

[0142] The text message 201 indicates that there is a suitable connection terminal 131 for an external device 11 called "Device A" connected to the connection terminal 61a called "Input 1", and that the suitable connection terminal 131 is the connection terminals 61c and 61d called "Input 3 / 4". The text message 201 may be replaced by a still image, a moving image, sound, etc.

[0143] The text message 202 indicates that there is a suitable connection terminal 131 for the external device 11 called "AMP" connected to the connection terminal 61b called "INPUT 2", and that the suitable connection terminal 131 is the connection terminal 61c called "INPUT 3". The text message 202 may be replaced by a still image, a moving image, sound, etc.

[0144] The text message 203 indicates that the operation member that accepts a specific operation to instruct displaying the connection guide 192 is an operation member called a "decision key." The text message 203 may be replaced with a still image, a moving image, a sound, or the like.

[0145] As shown in FIG. 13, the connection guide 192 includes a still image 211 .

[0146] The still image 211 shows a method of connecting one of two external devices 11 to the connection terminal 61d and connecting the other of the two external devices 11 to the connection terminal 61c. The still image 211 may be replaced with a text message, a moving image, a sound, or the like.

[0147] 1.16 First operation example The first operation example is an operation example in the case where the external device 11 is a device that supports 8K video, and the setting related to the image quality of the display device 12 is set to HDMI 2.1 mode. Therefore, in the first operation example, the connection terminals 61a and 61b do not support 8K video, and the connection terminals 61c and 61d support 8K video. In the first operation example, the user connects the external device 11 to the connection terminal 61a that does not support 8K video, and then reconnects the external device 11 to the connection terminal 61c that supports 8K video as shown in the connection guide. Devices that support 8K video include recorders, players, tuners, etc.

[0148] Fig. 14A, Fig. 14B and Fig. 14C are flowcharts showing the flow of processing performed by the display device of the first embodiment in the first operation example. Fig. 10 is also a diagram showing an example of a caution displayed on the display unit of the display device provided in the display system of the first embodiment in the first operation example. Fig. 11 is also a diagram showing an example of a connection guide displayed on the display unit of the display device provided in the display system of the first embodiment in the first operation example.

[0149] In the first operation example, the process proceeds along the gray lines shown in FIGS. 14A, 14B, and 14C.

[0150] As shown in FIGS. 14A, 14B, and 14C, in the first operation example, steps S101 to S105 are executed in sequence.

[0151] When step S105 is executed for the first time, external device 11 is connected to connection terminal 61a which is not included in appropriate connection terminals 131. Therefore, after step S105 is executed for the first time, steps S106 to S109 are executed in sequence.

[0152] When step S106 is executed, a caution 191 shown in FIG.

[0153] When step S108 is executed, a connection guide 192 shown in FIG.

[0154] When step S109 is executed, the external device 11 is reconnected to the connection terminal 61c included in the appropriate connection terminal 131. Therefore, after step S109 is executed, step S110 and steps S101 to S105 are executed in sequence.

[0155] When step S105 is executed for the second time, the external device 11 is reconnected to the connection terminal 61c included in the appropriate connection terminal 131. Therefore, after step S105 is executed for the second time, steps S112 and S119 are executed in sequence.

[0156] While connected to the connection terminal 61a, the external device 11 recognizes from the EDID 22 transmitted by the connection terminal 61a that the display device 12 only supports images of 4K or less, and outputs a video signal of 4K or less. As a result, the display device 12 displays images of 4K or less. After being reconnected to the connection terminal 61c, the display device 12 recognizes from the EDID 22 transmitted by the connection terminal 61c that the display device 12 supports images of 8K, and outputs an 8K video signal. As a result, the display device 12 displays images of 8K.

[0157] Caution 191 enables the user to recognize that the reason why display device 12 can only display images of 4K or less even though external device 11 should be able to output an 8K video signal is not due to a malfunction of display device 12, but due to the connection terminal 61 to which external device 11 is connected.

[0158] 1.17 Second operation example The second operation example is an operation example in the case where the external device 11 is an amplifier that supports the ARC function or the eARC function. In the second operation example, the connection terminals 61a, 61b, and 61d do not support the ARC function or the eARC function, and the connection terminal 61c supports the ARC function or the eARC function. In the second operation example, the user connects the external device 11 to the connection terminal 61a that does not support the ARC function or the eARC function, and then reconnects the external device 11 to the connection terminal 61c that supports the ARC function or the eARC function as shown in the connection guide.

[0159] Fig. 14A, Fig. 14B and Fig. 14C are also flowcharts showing the flow of processing performed by the display device of the first embodiment in the second operation example. Fig. 15 is a diagram showing an example of a caution displayed on the display unit of the display device provided in the display system of the first embodiment in the second operation example. Fig. 16 is a diagram showing an example of a connection guide displayed on the display unit of the display device provided in the display system of the first embodiment in the second operation example.

[0160] As shown in FIGS. 14A, 14B, and 14C, in the second operation example, steps S101 to S105 are executed in sequence.

[0161] When step S105 is executed for the first time, external device 11 is connected to connection terminal 61a which is not included in appropriate connection terminals 131. Therefore, after step S105 is executed for the first time, steps S106 to S109 are executed in sequence.

[0162] When step S106 is executed, a caution 221 shown in FIG.

[0163] As shown in FIG. 15, the displayed caution 221 includes text messages 231 and 232 .

[0164] The text message 231 indicates that there is a suitable connection terminal 131 for the external device 11 called "AMP" connected to the connection terminal 61a called "INPUT 1", and that the suitable connection terminal 131 is the connection terminal 61c called "INPUT 3". The text message 231 may be replaced by a still image, a moving image, sound, etc.

[0165] The text message 232 indicates that the operation member that accepts a specific operation to instruct displaying the connection guide 241 is an operation member called a "decision key." The text message 232 may be replaced with a still image, a moving image, a sound, or the like.

[0166] When step S108 is executed, a connection guide 241 shown in FIG.

[0167] As shown in FIG. 16, the displayed connection guide 241 includes a still image 251 .

[0168] The still image 251 shows a method for connecting the external device 11 to the connection terminal 61c. The still image 251 may be replaced with a text message, a moving image, a sound, or the like.

[0169] When step S109 is executed, the external device 11 is reconnected to the connection terminal 61c included in the appropriate connection terminal 131. Therefore, after step S109 is executed, step S110 and steps S101 to S105 are executed in sequence.

[0170] When step S105 is executed for the second time, the external device 11 is reconnected to the connection terminal 61c included in the appropriate connection terminal 131. Therefore, after step S105 is executed for the second time, steps S112 and S119 are executed in sequence.

[0171] The external device 11 does not output sound while it is connected to the connection terminal 61a, but outputs sound after it is reconnected to the connection terminal 61c.

[0172] The caution 221 enables the user to recognize that the reason why the external device 11 is unable to output sound even though it should be able to do so is not due to a malfunction of the display device 12, but due to the connection terminal 61 to which the external device 11 is connected.

[0173] 1.18 Third operation example The third operation example is an operation example in the case where the external device 11 is a device that supports 8K video, and the setting related to the image quality of the display device 12 is set to HDMI 1.4 mode that does not support 8K video. In the third operation example, after the user connects the external device 11 to the connection terminal 61c, the setting related to the image quality of the display device 12 is switched to HDMI 2.1 mode that supports 8K video, as shown in the setting guide. Devices that support 8K video include recorders, players, tuners, etc.

[0174] Fig. 17A, Fig. 17B and Fig. 17C are flowcharts showing the flow of processing performed by the display device of the first embodiment in the third operation example. Fig. 18 is a diagram showing an example of a caution displayed on the display unit of the display device provided in the display system of the first embodiment in the third operation example. Fig. 19 is a diagram showing an example of a setting guide displayed on the display device provided in the display system of the first embodiment in the third operation example.

[0175] In the third operation example, the process proceeds along the gray lines shown in FIGS. 17A, 17B, and 17C.

[0176] In the third operation example, as shown in FIGS. 17A, 17B, and 17C, steps S101 to S105 and step S112 are executed in sequence.

[0177] When step S112 is executed, the image quality setting of the display device 12 is set to the HDMI 1.4 mode, which is not included in the appropriate settings 36. Therefore, after step S112 is executed, steps S113 to S116 are executed in sequence.

[0178] When step S113 is executed, a caution 261 shown in FIG.

[0179] As shown in FIG. 18, the displayed caution 261 includes text messages 271 and 272 .

[0180] The text message 271 indicates that the appropriate setting 36 is present and that the appropriate setting 36 is the HDMI 2.1 mode. All or part of the text message 271 may be replaced with a still image, a moving image, sound, or the like.

[0181] Text message 272 indicates that the operation member that accepts a specific operation to instruct displaying setting guide 281 is an operation member called a "decision key." Text message 272 may be replaced with a still image, a moving image, a sound, or the like.

[0182] When step S115 is executed, a setting guide 281 shown in FIG.

[0183] As shown in FIG. 19, the displayed settings guide 281 includes a still image 291 .

[0184] The still image 291 shows a method of changing the image quality setting of the display device 12, called the "compatible signal mode," to the HDMI 2.1 mode. The still image 291 may be replaced with a text message, a moving image, sound, or the like.

[0185] When step S116 is executed, the image quality setting of the display device 12 is set to the HDMI 2.1 mode included in the appropriate settings 36. Therefore, after step S116 is executed, steps S117 and S119 are executed in sequence.

[0186] While the image quality setting of the display device 12 is in the HDMI 1.4 mode, the external device 11 recognizes from the EDID 22 transmitted by the connection terminal 61c that the display device 12 only supports images of 4K or less, and outputs a video signal of 4K or less. As a result, the display device 12 displays images of 4K or less. After the image quality setting of the display device 12 is set to the HDMI 2.1 mode, the external device 11 recognizes from the EDID 22 transmitted by the connection terminal 61c that the display device 12 supports images of 8K, and outputs an 8K video signal. As a result, the display device 12 displays images of 8K.

[0187] Caution 261 enables the user to recognize that the reason why display device 12 can only display images of 4K or lower even though external device 11 should not be able to output an 8K video signal is not due to a malfunction of display device 12, but due to a setting related to image quality of display device 12.

[0188] 1.19 Fourth operation example The fourth operation example is an operation example in the case where the external device 11 is a device compatible with the VRR function, and the setting related to the game function of the display device 12 is set to disable the game function. In the fourth operation example, after the user connects the external device 11 to the connection terminal 61c, the setting related to the game function of the display device 12 is switched to a setting that enables the game function, as shown in the setting guide.

[0189] Fig. 17A, Fig. 17B and Fig. 17C are also flowcharts showing the flow of processing performed by the display device of the first embodiment in the fourth operation example. Fig. 20 is a diagram showing an example of a caution displayed on the display unit of the display device provided in the display system of the first embodiment in the fourth operation example. Fig. 21 is a diagram showing an example of a setting guide displayed on the display device provided in the display system of the first embodiment in the fourth operation example.

[0190] In the fourth operation example, the process proceeds along the gray lines shown in FIGS. 17A, 17B, and 17C.

[0191] In the fourth operation example, as shown in FIGS. 17A, 17B, and 17C, steps S101 to S105 and step S112 are executed in sequence.

[0192] When step S112 is executed, the settings related to the game functions of the display device 12 are set to disable game functions that are not included in the appropriate settings 36. Therefore, after step S112 is executed, steps S113 to S116 are executed in sequence.

[0193] When step S113 is executed, a caution 301 shown in FIG.

[0194] As shown in FIG. 20, the displayed caution 301 includes text messages 311 and 312 .

[0195] The text message 311 indicates that the appropriate setting 36 is present and that the appropriate setting 36 is a setting that enables a gaming function. All or part of the text message 311 may be replaced with a still image, a moving image, sound, or the like.

[0196] Text message 312 indicates that the operation member that accepts a specific operation to instruct displaying setting guide 321 is an operation member called a "decision key." Text message 312 may be replaced with a still image, a moving image, a sound, or the like.

[0197] When step S115 is executed, a setting guide 321 shown in FIG.

[0198] The displayed settings guide 321 includes a still image 331 .

[0199] The still image 331 shows a method for enabling the game function by changing the settings related to the game function of the display device 12. The still image 331 may be replaced with a text message, a moving image, a sound, or the like.

[0200] When step S116 is executed, the settings related to the game functions of the display device 12 are set to enable the game functions included in the appropriate settings 36. Therefore, after step S116 is executed, steps S117 and S119 are executed in sequence.

[0201] While the setting related to the game function of the display device 12 is set to disable the game function, the external device 11 recognizes that the display device 12 does not support the VRR function from the EDID 22 transmitted from the connection terminal 61c, and outputs a video signal without using the VRR function. Therefore, the display device 12 displays video without using the VRR function. Therefore, stuttering, display delay, etc. occur in scenes with a lot of movement. After the setting related to the game function of the display device 12 is set to enable the game function, the display device 12 recognizes that the display device 12 supports the VRR function from the EDID 22 transmitted from the connection terminal 61c, and outputs a video signal using the VRR function. Therefore, the display device 12 displays video using the VRR function.

[0202] The caution 301 enables the user to recognize that the occurrence of stuttering, display delays, etc. in scenes with a lot of movement is not due to a malfunction of the display device 12 but is due to settings related to the game functions of the display device 12.

[0203] 1.20 Fifth operation example The fifth operation example is an operation example in which the external device 11 is a device that supports the eARC function, and the settings related to the ARC function and the eARC function of the display device 12 are set to disable the eARC function. In the fifth operation example, after the user connects the external device 11 to the connection terminal 61c, the user switches the settings related to the ARC function and the eARC function of the display device 12 to settings that enable the eARC function, as shown in the setting guide.

[0204] Fig. 17A, Fig. 17B and Fig. 17C are flowcharts showing the flow of processing performed by the display device of the first embodiment in the fifth operation example. Fig. 22 is a diagram showing an example of a caution displayed on the display unit of the display device provided in the display system of the first embodiment in the fifth operation example. Fig. 23 is a diagram showing an example of a setting guide displayed on the display device provided in the display system of the first embodiment in the fifth operation example.

[0205] In the fifth operation example, the process proceeds along the gray lines shown in FIGS. 17A, 17B, and 17C.

[0206] In the fifth operation example, as shown in FIGS. 17A, 17B, and 17C, steps S101 to S105 and step S112 are executed in sequence.

[0207] When step S112 is executed, the settings related to the ARC function and the eARC function of the display device 12 are set to disable the eARC function that is not included in the appropriate settings 36. Therefore, after step S112 is executed, steps S113 to S116 are executed in sequence.

[0208] When step S113 is executed, a caution 341 shown in FIG.

[0209] As shown in FIG. 22, the displayed caution 341 includes text messages 351 and 352 .

[0210] The text message 351 indicates that the appropriate settings 36 are present and that the appropriate settings 36 are settings that enable the eARC function. All or part of the text message 351 may be replaced with a still image, a moving image, sound, or the like.

[0211] Text message 352 indicates that the operation member that accepts a specific operation to instruct displaying setting guide 361 is an operation member called a “decision key.” Text message 352 may be replaced with a still image, a moving image, a sound, or the like.

[0212] When step S115 is executed, a setting guide 361 shown in FIG.

[0213] As shown in FIG. 23, the displayed settings guide 361 includes a still image 371 .

[0214] The still image 371 shows a method for setting the ARC function and the eARC function of the display device 12 to enable the eARC function. The still image 371 may be replaced with a text message, a moving image, sound, or the like.

[0215] When step S116 is executed, the settings related to the ARC function and the eARC function of the display device 12 are set to enable the eARC function included in the appropriate setting 36. Therefore, after step S116 is executed, steps S117 and S119 are executed in sequence.

[0216] While the settings related to the ARC function and the eARC function of the display device 12 are set to disable the eARC function, the external device 11 outputs audio without using the eARC function. Therefore, the sound quality of the output audio is lower than the high sound quality when the eARC function is used. After the settings related to the ARC function and the eARC function are set to enable the eARC function, the external device 11 outputs audio using the eARC function. Therefore, the sound quality of the output audio is the high sound quality when the eARC function is used.

[0217] Caution 341 enables the user to recognize that the reason the sound quality of the output audio is lower than the high sound quality that occurs when the eARC function is used is not due to a malfunction of the display device 12, but due to the settings related to the ARC function and eARC function of the display device 12.

[0218] 2. Second embodiment The following describes the differences between the second embodiment and the first embodiment. For points that are not described, the second embodiment employs the same configuration as that employed in the first embodiment.

[0219] FIG. 24 is a block diagram of a display system according to the second embodiment.

[0220] 24, in the second embodiment, the display device 12 does not include the corresponding information database 64. In addition, a server 381 external to the display device 12 includes the corresponding information database 64. For this reason, the collation unit 65 acquires the corresponding information 34 from the corresponding information database 64 included in the server 381 external to the display device 12.

[0221] 3. Third embodiment The following describes the differences between the third embodiment and the first embodiment. For points that are not described, the third embodiment employs the same configuration as that employed in the first embodiment.

[0222] 25A, 25B, and 25C are flowcharts showing the flow of processing performed by a display device provided in a display system of the third embodiment.

[0223] In the third embodiment, as shown in FIGS. 25A, 25B, and 25C, step S214 is executed after step S113 is executed.

[0224] In step S214, the notification processing unit 66 causes the display unit 81 to display an inquiry as to whether or not to switch the setting of the display device 12 to the first setting 136 included in the appropriate settings 36.

[0225] In the next step S215, the setting unit 69 judges whether or not an operation to acknowledge switching the setting of the display device 12 to the first setting 136 has been performed on the operation unit 68. If it is judged that the operation has been performed, steps S216 and S217 are executed, and then step S119 is executed. If it is judged that the operation has not been performed, step S218 is executed, and then step S119 is executed.

[0226] In steps S216 and S218, the caution display control unit 111 instructs the caution display unit 112 to end the display of the caution on the display unit 81. In addition, the caution display unit 112 ends the display of the caution on the display unit 81.

[0227] In step S217, the setting unit 69 switches the setting of the display device 12 to the first setting 136. The setting unit 69 automatically switches the setting of the display device 12 to the first setting 136 in the background while the display unit 81 is displaying an image.

[0228] Through steps S214 to S217, the setting unit 69 switches the setting of the display device 12 to the first setting 136 when an operation is performed on the operation unit 68 to confirm that the setting of the display device 12 is to be switched to the first setting 136 after the display unit 81 displays an inquiry as to whether or not to switch the setting of the display device 12 to the first setting 136.

[0229] The sixth operation example described below is an operation example in which the external device 11 is a device that supports 8K video, and the image quality setting of the display device 12 is set to HDMI 1.4 mode, which does not support 8K video. In the sixth operation example, after the user connects the external device 11 to the connection terminal 61c, the user agrees to switch the image quality setting of the display device 1 to HDMI 2.1 mode. Devices that support 8K video include recorders, players, tuners, etc.

[0230] FIG. 26 is a diagram showing an example of a caution displayed on the display unit of the display device provided in the display system of the first embodiment in the sixth operation example.

[0231] In the sixth operation example, the process proceeds along the gray lines shown in FIGS. 25A, 25B, and 25C.

[0232] In the sixth operation example, as shown in FIGS. 25A, 25B, and 25C, steps S101 to S105 and step S112 are executed in sequence.

[0233] When step S112 is executed, the image quality setting of the display device 12 is set to the HDMI 1.4 mode, which is not included in the appropriate settings 36. Therefore, after step S112 is executed, steps S113, S214, and S215 are executed in sequence.

[0234] When step S113 is executed, a caution 391 shown in FIG.

[0235] The displayed caution 391 includes text messages 401 , 402 and 403 .

[0236] The text message 401 indicates that the appropriate setting 36 is present and that the appropriate setting 36 is the HDMI 2.1 mode. The text message 401 may be replaced with a still image, a moving image, sound, or the like.

[0237] The text message 402 indicates an inquiry as to whether or not to switch the image quality setting of the display device 12 to the HDMI 2.1 mode. The text message 402 may be replaced with a still image, a moving image, a sound, or the like.

[0238] The text message 403 indicates that the operation member that accepts an operation indicating that the setting related to the image quality of the display device 12 is switched to the HDMI 2.1 mode is an operation member called the "Enter key," and that the operation member that accepts an operation indicating that the setting related to the image quality of the display device 12 is not switched to the HDMI 2.1 mode is an operation member called the "Back key." The text message 403 may be replaced with a still image, a moving image, a sound, or the like.

[0239] When step S215 is executed, an operation for switching the image quality setting of the display device 12 to the HDMI 2.1 mode is performed on the operation unit 68. Therefore, after step S215 is executed, steps S216, S217, and S119 are executed in sequence.

[0240] While the image quality setting of the display device 12 is in the HDMI 1.4 mode, the external device 11 recognizes from the EDID 22 transmitted by the connection terminal 61c that the display device 12 only supports images of 4K or less, and outputs a video signal of 4K or less. As a result, the display device 12 displays images of 4K or less. After the image quality setting of the display device 12 is switched to the HDMI 2.1 mode, the display device 12 recognizes from the EDID 22 transmitted by the connection terminal 61c that the display device 12 supports images of 8K, and outputs an 8K video signal. As a result, the display device 12 displays images of 8K.

[0241] The caution 391 enables the user to recognize that the reason why the display device 12 can only display 4K or lower images even though the external device 11 should be able to output an 8K video signal is not due to a malfunction of the display device 12, but due to the settings related to the image quality of the display device 12. Furthermore, by simply agreeing to switch the settings related to the image quality of the display device 12 to the HDMI 2.1 mode, the user can display 8K images on the display device 12 without using a setting screen or the like.

[0242] The present disclosure is not limited to the above-described embodiments, and may be replaced with a configuration that is substantially the same as the configuration shown in the above-described embodiments, a configuration that has the same action and effect, or a configuration that can achieve the same purpose. [Explanation of symbols]

[0243] 1 display system, 11 external device, 12 display device, 21 extended display identification data (EDID) request, 22 EDID, 23 high definition multimedia interface (HDMI) signal, 31 external device information, 32a, 32b, 32c, 32d, 32 connection terminal information, 33a, 33b, 33c, 33d EDID rewrite request, 34 compatibility information, 35 proper connection, 36 proper setting, 37 information, 38 Audio Return Channel (ARC) / Enhanced Audio Return Channel (eARC) compatibility information, 41 type, 42 device name, 43 manufacturer, 51 determination unit, 52 output unit, 61a, 61b, 61c, 61d, 61 connection terminal, 62a, 62b, 62c, 62, 62d HDMI signal processing unit, 63a, 63b, 63c, 63d, 63 EDID rewrite unit, 64 Supported information database, 65 Matching unit, 66 Notification processing unit, 67 Notification unit, 68 Operation unit, 69 Setting unit, 71 Connection unit, 81 Display unit, 91 Receiving unit, 92 Acquisition unit, 93 EDID storage unit, 94 Decoding unit, 95 Connection terminal information database, 101 Analysis unit, 111 Caution display control unit, 112 Caution display unit, 113 Guide display control unit, 114 Guide display unit, 131 Appropriate connection terminal, 132 Specific function, 133 Specific image quality, 134 First connection terminal, 135 Second connection terminal, 136 First setting, 137 Second setting, 141 Variable refresh rate (VRR) function, 142 Automatic low latency mode (ALLM) function, 143 ARC function, 144 eARC function, 151 Specific resolution, 152 Specific refresh rate, 161 Caution, 162 Connection Guide, 171,172 Text Message, 181 Still Image, 191 Caution, 192 Connection Guide, 201,202,203 Text Message, 211 Still Image, 221 Caution, 231,232 Text Message, 241 Connection Guide, 251 Still Image, 261 Caution, 271,272 Text Message, 281 Setup Guide, 291 Still Image, 301 Caution, 311,312 Text Message, 321 Setup Guide, 331 Still Image, 341 Caution, 351,352 Text messages, 361 Configuration guide, 371 Still images, 381 Server, 391 Caution, 401, 402, 403 Text messages.

Claims

1. A connection part, A notification department; a receiving unit that receives information for identifying an external device from the external device connected to the connection unit; an analysis unit that analyzes the information to obtain at least one of an appropriate connection of the external device to the connection unit and an appropriate setting of a display device; a notification processing unit that notifies the notification unit that at least one of the two is present; A display device comprising:

2. said at least one including said appropriate connection; The connection portion includes a plurality of connection terminals, The appropriate connection includes connecting the external device to an appropriate connection terminal included in the plurality of connection terminals. The display device according to claim 1 .

3. the plurality of connection terminals include a first connection terminal corresponding to a specific function and a second connection terminal not corresponding to the specific function; When the external device supports the specific function, the analysis unit includes the first connection terminal in the appropriate connection terminals and does not include the second connection terminal in the appropriate connection terminals. The display device according to claim 2 .

4. The specific function includes at least one selected from the group consisting of a variable refresh rate function, an automatic low latency mode function, an audio return channel function, and an extended audio return channel function. The display device according to claim 3 .

5. the plurality of connection terminals include a first connection terminal corresponding to a specific image quality and a second connection terminal not corresponding to the specific image quality; When the external device is compatible with the specific image quality, the analysis unit includes the first connection terminal in the appropriate connection terminals and does not include the second connection terminal in the appropriate connection terminals. The display device according to claim 2 .

6. The specific image quality includes at least one selected from the group consisting of a specific resolution and a specific refresh rate. The display device according to claim 5 .

7. At least one of the at least two includes the appropriate setting, a setting unit that switches a setting of the display device between a first setting corresponding to a specific function and a second setting not corresponding to the specific function; The analysis unit includes the first setting in the appropriate settings and does not include the second setting in the appropriate settings when the external device supports the specific function. The display device according to claim 1 .

8. At least one of the at least two includes the appropriate setting, a setting unit that switches a setting of the display device between a first setting corresponding to a specific image quality and a second setting that does not correspond to the specific image quality; The analysis unit includes the first setting in the appropriate settings and does not include the second setting in the appropriate settings when the external device supports the specific image quality. The display device according to claim 1 .

9. Equipped with an operation unit, the notification processing unit causes the notification unit to notify an inquiry as to whether or not to switch the setting of the display device to the first setting; The setting unit switches the setting of the display device to the first setting when an operation for agreeing to switch the setting of the display device to the first setting is performed on the operation unit after the notification unit notifies the inquiry. The display device according to claim 8.

10. The analysis unit acquires, from the information, correspondence information including both or one of a function and image quality supported by the external device, and acquires at least one of the functions and image quality from the correspondence information.

10. A display device according to claim 1.

11. The analysis unit acquires the corresponding information from a database included in a server external to the display device. The display device according to claim 10.

12. Equipped with an operation unit, The notification processing unit notifies, when a specific operation is performed on the operation unit after the notification processing unit notifies the notification unit of the presence of the at least one of the devices, the notification processing unit notifies the notification unit of a method for performing the at least one of the devices.

10. A display device according to claim 1.

13. said at least one including said appropriate connection; The notification processing unit notifies the notification unit that the appropriate connection exists when a current connection of the external device to the connection unit is different from the appropriate connection.

10. A display device according to claim 1.

14. At least one of the at least two includes the appropriate setting, The notification processing unit notifies the notification unit that the appropriate setting exists when a current setting of the display device is different from the appropriate setting.

10. A display device according to claim 1.

15. The notification unit includes a display unit, Informing the notification unit of the presence of the at least one of the devices includes causing the display unit to display the presence of the at least one of the devices.

10. A display device according to claim 1.

16. The information indicates at least one selected from the group consisting of a type, a device name, and a manufacturer of the external device.

10. A display device according to claim 1.

17. receiving information identifying an external device from the external device connected to the connection portion; analyzing the information to obtain at least one of a proper connection of the external device to the connection portion and a proper configuration of a display device; notifying that at least one of them is present; A method for controlling a display device comprising:

Images