Wireless transmission device and wireless display system

Abstract

A wireless transmission device according to an embodiment of the present disclosure comprises: a compression chip for compressing at least one of a video signal and an audio signal; at least one antenna for transmitting wireless signals compressed by the compression chip; and a processor for controlling the antenna, wherein the processor can execute an automatic antenna adjustment mode for automatically adjusting the angle of the antenna.

Description

Wireless transmission device and wireless display system

[0001] The present disclosure relates to a wireless system for transmitting and receiving A / V data wirelessly.

[0002] Digital TV services utilizing wired or wireless networks are becoming more widespread. Digital TV services can offer a variety of services not available with existing analog broadcasting services.

[0003] For example, IPTV (Internet Protocol Television), a type of digital TV service, and smart TV services offer interactivity, allowing users to actively choose the type of program they want to watch and when. Building on this interactivity, IPTV and smart TV services can also offer a variety of additional services, such as internet search, home shopping, and online games.

[0004] Recently, TV services have been provided through wireless systems in which an A / V transmission device transmits a compressed A / V (Audio / Video) signal to an A / V receiving device via a wireless connection, and the A / V receiving device restores the compressed A / V signal and outputs it.

[0005] In the case of a wireless display system, RF (Radio Frequency) communication is performed between an A / V transmitting device and an A / V receiving device via antennas, so the arrangement position relationship between the transmitting antennas and the receiving antennas is important for wireless quality.

[0006] However, changes such as a change in the location of the A / V transmitter or the presence of obstacles between the A / V transmitter and receiver can cause a degradation in wireless signal performance. In these cases, the user previously had to manually adjust the antenna, which was inconvenient. Furthermore, if the user fails to properly adjust the antenna direction, wireless signal performance does not improve.

[0007] The present disclosure seeks to provide a wireless transmission device and a wireless display system in which the antenna direction is automatically adjusted.

[0008] The present disclosure seeks to provide a wireless transmission device and a wireless display system that minimize user inconvenience in an automatic antenna adjustment mode.

[0009] The present disclosure provides a wireless transmission device and a wireless display system that secure the performance of a wireless signal while minimizing the operating time in an antenna auto-tuning mode.

[0010] A wireless transmission device according to an embodiment of the present disclosure includes a compression chip that compresses at least one of a video signal and an audio signal, at least one antenna that transmits a wireless signal compressed by the compression chip, and a processor that controls the antenna, wherein the processor can perform an antenna auto-adjustment mode that automatically adjusts an angle of the antenna.

[0011] A wireless display system according to an embodiment of the present disclosure includes a wireless transmitting device and a wireless receiving device, wherein the wireless transmitting device includes a compression chip that compresses at least one of a video signal and an audio signal, at least one antenna that transmits a wireless signal compressed by the compression chip, and a processor that controls the antenna, wherein the processor can perform an antenna automatic adjustment mode that automatically adjusts an angle of the antenna.

[0012] When the processor performs the antenna auto-tuning mode, the processor can search for a strong electric field sector while changing the angle of the antenna by a first angle unit, and determine the angle of the antenna based on the signal strength measured while changing the angle by a second angle unit smaller than the first angle within the searched strong electric field sector.

[0013] The processor can determine the up-down angle and the left-right angle of the antenna by searching for a strong field sector for each of the up-down direction and the left-right direction and then determining the direction of the antenna within the searched strong field sector.

[0014] When the processor performs the antenna auto-tuning mode, it can operate in one of the detailed operation modes: precision mode, general mode, and fast mode.

[0015] When the processor is in precision mode, the processor can determine the angle of the antenna by searching for a strong field sector while changing by a first angle unit within all antenna angle ranges and then changing by a second angle unit smaller than the first angle within the searched strong field sectors; when the processor is in normal mode, the processor can determine the antenna angle after scanning all adjustable antenna angle ranges; and when the processor is in fast mode, the processor can determine the antenna angle by adjusting the antenna by a predetermined angle based on the current antenna angle.

[0016] The processor may operate in an antenna auto-tuning mode when the wireless transmitting device is powered on and off.

[0017] The processor may operate in an antenna auto-tuning mode when a change in position of the wireless transmitting device is detected.

[0018] The processor may control the wireless receiving device to display a message asking whether to enter an antenna auto-tuning mode when the signal strength of the wireless signal is below a preset threshold.

[0019] The wireless transmission device may further include an up-and-down adjustment motor for adjusting the angle of the antenna in the up-and-down direction and a left-and-right adjustment motor for adjusting the angle of the antenna in the left-and-right direction.

[0020] The wireless transmission device comprises a case that houses a compression chip, an antenna, and a processor inside, and is disposed on the upper surface of the case, the antenna is connected to the lower portion, and further comprises a rotatable plate, a vertical adjustment motor adjusts the vertical angle of the antenna, and a left-right adjustment motor is installed on the lower portion of the plate to rotate the plate to adjust the left-right angle of the antenna.

[0021] According to an embodiment of the present disclosure, since the antenna direction is automatically adjusted, there is a technical advantage of ensuring the performance of a wireless signal while minimizing user inconvenience of having to directly adjust the antenna.

[0022] According to an embodiment of the present disclosure, there is an advantage of minimizing the operating time in the antenna auto-tuning mode for user convenience.

[0023] According to an embodiment of the present disclosure, there is an advantage in that the performance of a wireless signal can be maximized through an antenna auto-tuning mode according to user convenience.

[0024] FIGS. 1 and 2 are drawings explaining the configuration of a display system according to one embodiment of the present disclosure.

[0025] FIG. 3 is a block diagram illustrating the configuration of a remote control device according to one embodiment of the present disclosure.

[0026] FIG. 4 is a ladder diagram for explaining an operation method of a wireless display system according to an embodiment of the present disclosure.

[0027] Figures 5 and 6 are drawings showing how the antenna direction of a conventional A / V transmission device is manually changed.

[0028] FIG. 7 is a drawing for explaining a motor of an A / V transmission device according to an embodiment of the present disclosure.

[0029] FIG. 8 is an exemplary drawing showing an example in which an up-and-down adjustment motor of an A / V transmission device according to an embodiment of the present disclosure adjusts an antenna direction in an up-and-down direction.

[0030] FIG. 9 is an exemplary drawing showing a left-right adjustment motor of an A / V transmission device according to an embodiment of the present disclosure adjusting the antenna direction in the left-right direction.

[0031] FIG. 10 is a flowchart illustrating an operation method of an A / V transmission device according to an embodiment of the present disclosure.

[0032] FIG. 11 is an exemplary drawing showing an A / V receiving device according to an embodiment of the present disclosure displaying a message asking whether to execute operation in an antenna auto-adjustment mode.

[0033] FIG. 12 illustrates a method of operating an A / V transmission device in an antenna auto-adjustment mode according to a first embodiment of the present disclosure.

[0034] Fig. 13 is an example drawing showing the operation in the antenna automatic adjustment mode described in Fig. 12.

[0035] FIG. 14 is an exemplary drawing showing an A / V transmission device according to a second embodiment of the present disclosure displaying a menu for selecting various detailed operation modes in an antenna auto-adjustment mode.

[0036] FIG. 15 is a flowchart illustrating a method for a wireless transmission device according to an embodiment of the present disclosure to adjust an antenna when receiving a power-on command.

[0037] FIG. 16 is a diagram for explaining a method in which a wireless transmission device according to an embodiment of the present disclosure operates in an antenna beam adjustment mode.

[0038] FIG. 17 is a flowchart illustrating a method for a wireless transmission device according to an embodiment of the present disclosure to adjust an antenna when receiving a power-off command.

[0039] An image / audio (hereinafter, A / V) transmission device according to an embodiment of the present disclosure is, for example, an intelligent device that adds a computer support function to a broadcast reception function, and while remaining faithful to the broadcast reception function, it can be provided with an Internet function, etc., and a more convenient interface such as a manual input device, a touch screen, or a space remote control.

[0040] Additionally, with wired or wireless Internet access, you can connect to the Internet and a computer, enabling functions such as email, web browsing, banking, and gaming. A standardized, general-purpose operating system can be used for these diverse functions.

[0041] Accordingly, the A / V transmission device described in the present disclosure can perform various user-friendly functions, for example, since various applications can be freely added or deleted on a general-purpose OS kernel.

[0042] FIGS. 1 and 2 are drawings illustrating the configuration of a wireless display system according to an embodiment of the present disclosure.

[0043] Referring to FIG. 1, a wireless display system (1) according to one embodiment of the present disclosure includes an A / V transmission device (100) and an A / V reception device (200).

[0044] A wireless display system (1) may be a system in which an A / V transmission device (100) wirelessly transmits A / V data to an A / V reception device (200), and the A / V reception device (200) outputs A / V data.

[0045] The A / V transmission device (100) may be a device capable of encoding video and audio and wirelessly transmitting the encoded content video and audio.

[0046] The A / V transmission device (100) may be a set-top box.

[0047] The A / V transmission device (100) can be connected to an external device such as a set-top box or a USB memory. The A / V transmission device (100) can transmit a video signal or audio signal received from the connected external device to the A / V reception device (200).

[0048] The A / V receiving device (200) may be a display device capable of wirelessly receiving encoded video and audio and decoding the received video and audio.

[0049] An A / V transmission device (100) and an A / V reception device (200) can constitute a video wall display system.

[0050] In video walls, display bezels with thin bezels play a crucial role in visualizing content. To achieve this, it's efficient to have only the bare minimum components, with circuits or components for key functions housed in separate devices.

[0051] The A / V transmission device (100) can determine the type of content image input from the outside and, based on the determined type, determine the compression ratio of the content image. The compression ratio of the content image can be defined as the ratio of the size of the image data before encoding and the size of the image data after encoding.

[0052] The type of content video can include still image type, general video type, and game video type.

[0053] The A / V transmission device (100) can compress content images according to a determined compression ratio and wirelessly transmit the compressed content images to the A / V reception device (200).

[0054] The A / V receiving device (200) can restore a compressed content image received from the A / V transmitting device (100) and display the restored content image on a display.

[0055] Figure 2 is a block diagram illustrating the detailed configuration of an A / V transmission device (100) and an A / V reception device (200).

[0056] Referring to FIG. 2, the A / V transmission device (100) may include a microphone (110), a wireless communication interface (120), a wired communication interface (130), a memory (140), a compression chip (150), an RF transmission interface (160), and a processor (190).

[0057] The microphone (110) can receive an audio signal and transmit it to the processor (190).

[0058] The microphone (110) can receive the voice spoken by the user.

[0059] The wireless communication interface (120) may include one or more of a Wi-Fi module and a Bluetooth module.

[0060] The Wi-Fi module can perform wireless communication with an external device or A / V receiving device (200) through the Wi-Fi standard.

[0061] The Bluetooth module can perform wireless communication through the Bluetooth Low Energy (BLE) standard.

[0062] The Bluetooth module can perform wireless communication with an external device such as a remote control or an A / V receiving device (200) through the Bluetooth Low Energy (BLE) standard.

[0063] The wireless communication interface (120) may also have a tuner for receiving broadcast signals.

[0064] The wired communication interface (130) may be an interface for wired connection with an external device. The wired communication interface (130) may include a plurality of HDMI (High Definition Multimedia Interface) terminals or USB (Universal Serial Bus) ports.

[0065] The wired communication interface (130) can receive a video signal or audio signal from an external device.

[0066] The memory (140) stores a program for signal processing and control, and can store signal-processed image, voice, or data signals.

[0067] The memory (140) may perform a function for temporary storage of video, audio, or data signals input from the outside, and may also store information about a specific image through a channel memory function.

[0068] The compression chip (150) can compress a video signal or audio signal input from the outside and transmit the compressed signal to the RF transmission interface (160).

[0069] The compression chip (150) may be equipped with an encoder for compressing a video signal or an audio signal.

[0070] The RF transmission interface (160) can transmit an A / V signal to the RF reception interface (240) of the A / V reception device (200) via RF (Radio Frequency) communication.

[0071] The RF transmission interface (160) may include one or more antennas.

[0072] The RF transmission interface (160) can transmit a compressed A / V signal in digital form to the RF reception interface (240).

[0073] The RF transmission interface (160) can transmit A / V signals to the RF reception interface (240) through one or more channels.

[0074] The processor (190) can control the overall operation of the A / V transmission device (100). The processor (190) may be referred to as a main system on chip (Main SoC).

[0075] The processor (190) may also include a compression chip (150).

[0076] The A / V receiving device (200) may include a wireless communication interface (210), a wired communication interface (220), an RF receiving interface (240), a memory (250), a display (260), a speaker (270), a recovery chip (280), and a microcomputer (290).

[0077] The wireless communication interface (210) may include a Wi-Fi module, a Bluetooth module, and an IR module.

[0078] The Wi-Fi module can perform wireless communication through the Wi-Fi standard.

[0079] The Wi-Fi module can perform wireless communication with an external device or A / V transmission device (100) through the Wi-Fi standard.

[0080] The Bluetooth module can perform wireless communication through the Bluetooth Low Energy (BLE) standard.

[0081] The Bluetooth module can perform wireless communication with an external device such as a remote control or an A / V transmission device (100) through the Bluetooth Low Energy (BLE) standard.

[0082] The IR module can receive signals from a remote control (300) to be described later via IR (Infrared) communication.

[0083] The wired communication interface (220) may be an interface for wired connection with an external device. The wired communication interface (220) may include a plurality of HDMI (High Definition Multimedia Interface) terminals or USB (Universal Serial Bus) ports.

[0084] The wired communication interface (220) can receive a video signal or audio signal from an external device.

[0085] The RF receiving interface (240) can receive a compressed A / V signal from the RF transmitting interface (160).

[0086] The RF receiving interface (240) may include multiple antennas. The RF receiving interface (240) may be positioned at the bottom of the display (260).

[0087] The RF receiving interface (240) may include a first antenna module and a second antenna module. The first antenna module and the second antenna module may each include a plurality of antennas.

[0088] The RF receiving interface (240) can receive a compressed A / V signal in digital form from the RF transmitting interface (160) and transmit the received A / V signal to the restoration chip (280).

[0089] The memory (250) stores a program for signal processing and control, and can store signal-processed image, voice, or data signals.

[0090] The display (260) can display a video signal received from the microcomputer (290).

[0091] The display (260) can display a video signal according to the operation of a timing controller (not shown).

[0092] The restoration chip (280) can restore the compressed A / V signal received by the RF receiving interface (240). To this end, the restoration chip (280) can include a decoder.

[0093] The microcomputer (290) can control the overall operation of the A / V receiving device (200).

[0094] The microcomputer (290) can output a restored image signal through a display (260) and output a restored audio signal through a speaker (270).

[0095] FIG. 3 is a block diagram illustrating the configuration of a remote control device according to one embodiment of the present disclosure.

[0096] Referring to FIG. 3, the remote control device (300) may include a wireless communication interface (310), a user input interface (330), a memory (350), and a controller (390).

[0097] The wireless communication interface (310) may be an interface for performing wireless communication with an A / V transmission device (100) or an A / V reception device (200).

[0098] The wireless communication interface (310) may include a Bluetooth Low Energy (BLE) module (311) and an IR (InfraRed) module (313).

[0099] The BLE module (311) can transmit a signal to the A / V transmission device (100) to control the operation of the A / V transmission device (100).

[0100] The BLE module (311) can transmit a signal to the A / V transmission device (100) that triggers a pairing operation of the A / V transmission device (100).

[0101] The user input interface (330) may be composed of a keypad, buttons, a touch pad, or a touch screen.

[0102] The user input interface (330) can generate control commands to control the operation of the A / V transmission device (100) or the A / V reception device (200) according to the user's operation commands.

[0103] When the user input interface (330) has a hard key button, the user can operate the hard key by pushing the hard key button.

[0104] The user input interface (330) may be equipped with various types of input means that can be operated by the user, such as a scroll key or a jog key.

[0105] The memory (350) can store a program for the operation of the controller (390) and can also temporarily store input / output data.

[0106] The controller (390) controls the operations associated with the application and, typically, the overall operation of the remote control device (300).

[0107] FIG. 4 is an exemplary diagram showing the operation of a wireless display system according to an embodiment of the present disclosure.

[0108] The A / V transmission device (100) may refer to a wireless transmission device that transmits a wireless signal, and the A / V reception device (200) may refer to a wireless reception device that receives a wireless signal from the A / V transmission device (100).

[0109] The A / V transmission device (100) can be installed in a manner such as being placed on a table or the like. The A / V transmission device (100) can be placed in any location depending on the structure of the space, user convenience, etc. The A / V transmission device (100) can also be installed on a wall or ceiling.

[0110] The A / V receiving device (200) can be installed in the form of a wall mount, etc. The A / V receiving device (200) can receive a wireless signal including A / V data, etc. from the A / V transmitting device (100), and perform various operations such as outputting images and audio based on the received wireless signal.

[0111] The performance of these wireless signals can vary depending on various factors, such as the arrangement of the A / V transmission device (100) and the A / V reception device (200), and obstacles between them. In particular, the performance of the wireless signal can be severely degraded, in which case adjustment of the antenna direction is necessary. Conventionally, the user was asked to directly adjust the antenna direction. For example, when the performance of the wireless signal was degraded, a guidance message was displayed on the display (260) to advise adjustment of the antenna direction.

[0112] An A / V transmission device (100) may include a case (100a), a plate (100b) disposed on the upper surface of the case (100a), and a handle (100c) formed on the upper surface of the plate (100b). An antenna (1600, see FIG. 5) may be installed on the lower portion of the plate (100b) and, in particular, may be connected to the handle (100c). Accordingly, the antenna direction is also changed according to the change in the position of the handle (100c). The user manually changes the antenna direction through the handle (100c).

[0113] In this specification, antenna direction may mean the direction in which the antenna (1600, see FIG. 5) transmits a signal.

[0114] Figures 5 and 6 are drawings showing how the antenna direction of a conventional A / V transmission device is manually changed. In particular, Figure 5 shows how the antenna direction is changed in the up-down direction, and Figure 6 shows how the antenna direction is changed in the left-right direction.

[0115] The antenna (1600) of the conventional A / V transmission device (100) may be installed at the bottom of the plate (100b). As a specific example, the antenna (1600) may be installed in an antenna case (1600a), and the antenna case (1600a) may be connected to a handle (100c) via a connecting member (1600b).

[0116] Referring to Fig. 5, the handle (100c) may be a button. The handle (100c) may be moved forward and backward by the user. As the handle (100c) moves, the antenna (1600) may also move in the same manner. As the handle (100c) is positioned forward, the antenna direction may face forward. As the handle (100c) moves backward, the antenna (1600) may rotate so that the antenna direction faces upward more and more. When the handle (100c) is positioned at the rearmost position, the antenna (1600) may rotate upward at a maximum angle based on the front direction. In this way, the up-down direction of the antenna (1600) of the conventional A / V transmission device (100) is changed by the forward and backward movement of the handle (100c).

[0117] Referring to Fig. 6, the plate (100b) may be a dial. The user may rotate the plate (100b) clockwise or counterclockwise. The antenna direction may be changed left or right by rotating the plate (100b). Fig. 6(a) illustrates a case where the antenna direction is facing forward, and Fig. 6(b) is an example drawing illustrating a case where the antenna direction is rotated 45 degrees to the right from the front.

[0118] In this way, conventionally, users manually changed the antenna direction by rotating the plate (100b) or moving the handle (100c). This resulted in the inconvenience of requiring users to manually adjust the antenna. Furthermore, even if users refer to the antenna adjustment guide, they may not be able to resolve the issue of reduced wireless signal performance due to inexperience in antenna adjustment.

[0119] Accordingly, the present disclosure seeks to provide a wireless transmission device and a wireless display system in which an antenna is automatically adjusted.

[0120] An A / V transmission device according to an embodiment of the present disclosure may include at least one motor for automatically adjusting the antenna direction.

[0121] FIG. 7 is a drawing for explaining a motor of an A / V transmission device according to an embodiment of the present disclosure.

[0122] An A / V transmission device (100) according to an embodiment of the present disclosure may further include at least one motor (500) (600). The motors (500) (600) can adjust the antenna direction. In the example of FIG. 7, an up-and-down adjustment motor (500) for adjusting the antenna direction in the up-and-down direction and a left-and-right adjustment motor (600) for adjusting the antenna direction in the left-and-right direction are illustrated as being respectively provided. However, this is merely an example, and according to an embodiment, one motor may be provided to adjust the antenna direction in the up-and-down direction and the left-and-right direction, respectively. In this specification, it is described that the up-and-down adjustment motor (500) and the left-and-right adjustment motor (600) adjust the antenna direction in the up-and-down direction and the left-and-right direction, respectively.

[0123] The up-and-down adjustment motor (500) may be connected to the connecting member (1600b). Alternatively, the up-and-down adjustment motor (500) may be connected to the antenna case (1600a), unlike as illustrated in FIG. 7. The up-and-down adjustment motor (500) may rotate the connecting member (1600b) (or the antenna case (1600a)) in the up-and-down direction. By driving the up-and-down adjustment motor (500), the connecting member (1600b) (or the antenna case (1600a)) rotates in the up-and-down direction, and accordingly, the antenna direction may also be changed in the up-and-down direction.

[0124] The left-right adjustment motor (600) may be directly or indirectly connected to the plate (100b). In the example of Fig. 7, the left-right adjustment motor (600) is illustrated as being indirectly connected to the plate (100b) via an intermediate member (600a). However, this is merely an example, and unlike the example of Fig. 7, the left-right adjustment motor (600) may be directly connected to the plate (100b). The left-right adjustment motor (600) may rotate the plate (100b) clockwise or counterclockwise. By driving the left-right adjustment motor (600), the plate (100b) rotates left-right, and accordingly, the antenna direction may also be changed left-right.

[0125] FIG. 8 is an exemplary drawing showing an example in which an up-and-down adjustment motor of an A / V transmission device according to an embodiment of the present disclosure adjusts an antenna direction in an up-and-down direction.

[0126] The up-and-down adjustment motor (500) can adjust the antenna direction in the up-and-down direction. By driving the up-and-down adjustment motor (500), the antenna direction can be adjusted between a minimum angle and a maximum angle in the up-and-down direction.

[0127] In the example of Fig. 8, the minimum angle may be 0°, which may be in a direction parallel to the lower surface of the case (100a). The maximum angle may be an angle tilted upward by a predetermined angle relative to 0°. For example, the maximum angle may be 80°, but this is merely an example.

[0128] The antenna orientation can be adjusted vertically between 0° and 80°. The minimum and maximum angles described above are merely examples and should not be construed as being limited thereto.

[0129] FIG. 9 is an exemplary drawing showing a left-right adjustment motor of an A / V transmission device according to an embodiment of the present disclosure adjusting the antenna direction in the left-right direction.

[0130] The left-right adjustment motor (600) can adjust the antenna direction in the left-right direction. By driving the left-right adjustment motor (600), the antenna direction can be adjusted from the minimum angle to the maximum angle in the left-right direction.

[0131] In the example of Fig. 9, the minimum angle may be 0°, which may be a direction that vertically penetrates the left side of the case (100a). The maximum angle may be 180°, which may be a direction that vertically penetrates the right side of the case (100a).

[0132] The antenna orientation can be adjusted horizontally between 0° and 180°. The minimum and maximum angles described above are merely examples and should not be construed as being limited thereto.

[0133] In this way, the operation method of a wireless transmission device and a wireless display system in which the antenna direction is automatically adjusted by the up-down adjustment motor (500) and the left-right adjustment motor (600) is described.

[0134] FIG. 10 is a flowchart illustrating an operation method of a wireless transmission device according to a first embodiment of the present disclosure.

[0135] The processor (190) can determine whether it is the timing for operation in the antenna auto-adjustment mode (S10).

[0136] The antenna auto-adjustment mode is an operation mode in which the antenna direction is automatically adjusted by at least one of the up-down adjustment motor (500) and the left-right adjustment motor (600).

[0137] There may be various ways for the processor (190) to determine whether it is time to operate in the antenna auto-tuning mode.

[0138] Below, various embodiments for determining whether the timing of operation is in the antenna auto-tuning mode are described.

[0139] According to the first embodiment, the processor (190) can determine whether it is time to operate in the antenna auto-tuning mode at preset intervals. The intervals may be set as default when the A / V transmission device (100) is manufactured.

[0140] The cycle can also be set by user input. For example, the cycle can be set to 2 hours, 6 hours, 1 day, etc. The processor (190) can control the display (260) to display a cycle setting menu (not shown) for setting the cycle.

[0141] In this case, there is an advantage in that the timing of operation in the antenna auto-tuning mode is determined according to user convenience.

[0142] According to the second embodiment, the processor (190) can determine the timing of operation in the antenna auto-tuning mode when the power is switched from off to on. The timing of the power switching from off to on is the timing when the antenna (1600) begins transmitting wireless signals in earnest. In this respect, the processor (190) can determine the timing of operation in the antenna auto-tuning mode when the power is switched from off to on.

[0143] In this case, the antenna direction is automatically adjusted before the wireless signal is transmitted in earnest, so there is an advantage in that the wireless signal is transmitted stably.

[0144] According to the third embodiment, the processor (190) can determine the timing of operation in the antenna auto-adjustment mode when the power is switched from on to off. Since it takes some time for the antenna direction to be adjusted, this can cause inconvenience to users who wish to watch videos. In this regard, operating in the antenna auto-adjustment mode when the power is turned off has the advantage of minimizing user inconvenience.

[0145] According to the fourth embodiment, the processor (190) can determine the timing of a channel change as the timing of operation in the antenna auto-tuning mode. The timing of a channel change refers to a situation in which a user is watching a video, and thus, by operating in the antenna auto-tuning mode at the time of a channel change, there is an advantage of enabling stable viewing of the video.

[0146] According to the fifth embodiment, the processor (190) can determine the time when a change in the position of the A / V transmission device (100) is detected as the timing of operation in the antenna automatic adjustment mode. The A / V transmission device (100) can include at least one of an acceleration sensor (not shown) and an angular velocity sensor (not shown), and can detect a change in the position of the A / V transmission device (100) based on sensing of these sensors. When a change in the position of the A / V transmission device (100) is detected, the processor (190) can operate in the antenna automatic adjustment mode. Since there is a high possibility that the antenna direction has also changed when the position of the A / V transmission device (100) changes, the antenna direction can be readjusted.

[0147] In this case, there is an advantage of minimizing the problem of deterioration in the performance of the wireless signal despite changes in the position of the A / V transmission device (100).

[0148] According to the sixth embodiment, the processor (190) can determine the time when a change in the performance of a wireless signal is detected as the timing of operation in the antenna auto-tuning mode. In particular, the processor (190) can determine the time when a degradation in the performance of a wireless signal is detected as the timing of operation in the antenna auto-tuning mode. The processor (190) can calculate a signal-to-noise ratio (SNR), a received signal strength indicator (RSSI), power, etc. The processor (190) can obtain the calculated signal-to-noise ratio (SNR), received signal strength indicator (RSSI), power, etc. as wireless performance. The processor (190) can determine whether the obtained wireless performance is below a preset threshold. If the obtained wireless performance is below the preset threshold, the processor (190) can determine that the timing of operation in the antenna auto-tuning mode is below the preset threshold.

[0149] According to one embodiment, the processor (190) may operate in an antenna auto-tuning mode immediately when the wireless performance is below a preset threshold.

[0150] In another embodiment, the processor (190) may control the display (260) to first display a message asking whether to execute an operation in the antenna auto-tuning mode when the wireless performance is below a preset threshold.

[0151] FIG. 11 is an exemplary drawing showing an A / V receiving device according to an embodiment of the present disclosure displaying a message asking whether to execute operation in an antenna auto-adjustment mode.

[0152] The processor (190) may control the display (260) to display a message (1010) asking whether to execute an operation in the antenna auto-tuning mode when the wireless performance is below a preset threshold. As illustrated in FIG. 11, under the control of the A / V transmission device (100), the display (260) may display the message (1010). The message (1010) may include text asking whether to execute an operation in the antenna auto-tuning mode, an OK button, and a Cancel button.

[0153] The processor (190) may operate in an antenna auto-tuning mode upon receiving a command to select a confirmation button.

[0154] As described above, the processor (190) can determine the timing of operation in the antenna auto-tuning mode in various ways.

[0155] Again, Figure 10 is explained.

[0156] If the processor (190) is not determined to be in the antenna auto-adjustment mode, the current antenna state can be maintained (S20).

[0157] That is, the processor (190) can maintain the current antenna direction if it is not determined that the timing for operation in the antenna auto-adjustment mode is reached.

[0158] If the processor (190) determines that the timing for operation in the antenna auto-adjustment mode is reached, the processor (190) can operate in the antenna auto-adjustment mode (S30).

[0159] Next, we will explain how to operate in antenna auto-tuning mode.

[0160] FIG. 12 illustrates a method of operating an A / V transmission device in an antenna auto-adjustment mode according to a first embodiment of the present disclosure.

[0161] When the processor (190) starts operation in the antenna auto-adjustment mode, it can first control the left and right adjustment motor (600) in units of first angles to search for a strong electric field sector (S31).

[0162] For example, the first angle may be 30 degrees, but this is merely an example. The processor (190) can measure the signal strength while moving the antenna direction in the left and right directions by the first angle. The processor (190) can search for a strong electric field sector in the horizontal direction based on the measured signal strength.

[0163] The processor (190) can control the left and right adjustment motor (600) in the second angle unit within the strong electric field sector to determine the horizontal antenna angle (S33).

[0164] The second angle may be smaller than the first angle. For example, the second angle may be 10 degrees, but this is merely an example.

[0165] The processor (190) can measure signal strength while moving at second angles within the strong electric field sector. The processor (190) can determine the angle at which the signal strength is measured to be the horizontal antenna angle.

[0166] The processor (190) can determine the vertical antenna angle after determining the horizontal antenna angle.

[0167] The processor (190) can search for a strong electric field sector by controlling the upper and lower adjustment motor (500) in third angle units (S35).

[0168] For example, the third angle may be 20 degrees, but this is just an example. The third angle may also be the same as the first angle.

[0169] The processor (190) can measure signal strength while moving the antenna direction in the vertical direction by a third angle. The processor (190) can search for a strong electric field sector in the vertical direction based on the measured signal strength.

[0170] The processor (190) can control the up-and-down adjustment motor (500) in the fourth angle unit within the strong electric field sector to determine the vertical antenna angle (S37).

[0171] The fourth angle may be smaller than the third angle. For example, the fourth angle may be 10 degrees, but this is merely an example. The third angle may also be equal to the second angle.

[0172] The processor (190) can measure signal strength while moving at fourth angles within the strong electric field sector. The processor (190) can determine the angle at which the signal strength is measured to be the vertical antenna angle.

[0173] Fig. 13 is an example drawing showing the operation in the antenna automatic adjustment mode described in Fig. 12.

[0174] Figure 13(a) shows a search for a horizontal strong field sector, and Figure 13(b) shows a determination of a horizontal antenna angle within a strong field sector.

[0175] Referring to Fig. 13(a), the processor (190) measured the signal strength while moving the left and right adjustment motor (600) by 30 degrees. That is, the processor (190) measured the signal strength at 0 degrees, 30 degrees, 60 degrees, 90 degrees, 120 degrees, 150 degrees, and 180 degrees, respectively. The signal strength was measured to be the highest at 120 degrees, and the second highest at 150 degrees. Accordingly, the processor (190) can acquire the area between 120 degrees and 150 degrees as a strong electric field sector in the horizontal direction.

[0176] Referring to Fig. 13(b), the processor (190) measured the signal strength while moving the left and right adjustment motor (600) by 10 degrees between 120 degrees and 150 degrees, which are strong field sectors. That is, the processor (190) measured the signal strength at each of 120 degrees, 130 degrees, 140 degrees, and 150 degrees. The signal strength was measured to be the highest at 130 degrees. Accordingly, the processor (190) can determine the horizontal antenna angle to be 130 degrees.

[0177] Figure 13(c) shows a search for a vertical strong field sector, and Figure 13(d) shows a determination of a vertical antenna angle within a strong field sector.

[0178] Referring to Fig. 13(c), the processor (190) measured the signal strength while moving the up-and-down adjustment motor (500) by 20 degrees. That is, the processor (190) measured the signal strength at 0 degrees, 20 degrees, 40 degrees, 60 degrees, and 80 degrees, respectively. The signal strength was measured to be the highest at 20 degrees, and the second highest at 40 degrees. Accordingly, the processor (190) can acquire the strong electric field sector in the vertical direction between 20 degrees and 40 degrees.

[0179] Referring to Fig. 13(d), the processor (190) measured the signal strength while moving the up-and-down adjustment motor (500) by 10 degrees between 20 and 40 degrees, which are strong field sectors. That is, the processor (190) measured the signal strength at 20 degrees, 30 degrees, and 40 degrees, respectively. The signal strength was measured to be the highest at 30 degrees. Accordingly, the processor (190) can determine the vertical antenna angle to be 30 degrees.

[0180] As described above, according to the first embodiment of the present disclosure, the processor (190) has the advantage of being able to precisely determine the antenna angle by first searching for a strong field sector in each of the horizontal direction and the vertical direction, and then secondarily determining the antenna angle within the searched strong field sector.

[0181] Meanwhile, while precise antenna angle determination maximizes wireless signal performance, it can also increase the time required to determine the antenna orientation. Some users may want to maximize wireless signal performance, but also want to shorten the time required to determine the antenna orientation.

[0182] Accordingly, the A / V transmission device according to the second embodiment of the present disclosure can provide various detailed operation modes in the antenna auto-tuning mode.

[0183] The A / V transmission device (100) can provide at least one of a precision mode, a normal mode, and a fast mode as an antenna auto-tuning mode.

[0184] FIG. 14 is an exemplary drawing showing an A / V transmission device according to a second embodiment of the present disclosure displaying a menu for selecting various detailed operation modes in an antenna auto-adjustment mode.

[0185] When the processor (190) initiates operation in the antenna auto-adjustment mode, the processor (190) can control the display (260) to display a detailed operation mode selection menu (1020) for selecting a detailed operation mode of the antenna auto-adjustment mode. The detailed operation mode selection menu (1020) can include at least one of a precision mode (1021), a general mode (1023), and a quick mode (1025).

[0186] Precision mode refers to an operating mode that determines the antenna angle by dividing it into primary and secondary. The processor (190) can determine the antenna angle through the method described in FIGS. 12 and 13.

[0187] Normal mode refers to an operating mode that determines the antenna angle after scanning the entire adjustable antenna angle range. When operating in normal mode, the processor (190) can measure the signal strength while adjusting the antenna direction in predetermined angle units across the entire antenna angle range. The processor (190) can determine the antenna angle as the angle at which the signal strength is measured to be the highest.

[0188] For example, the processor (190) can measure the signal strength while moving the antenna direction horizontally by 30 degrees and determine the angle at which the signal strength is measured to be the horizontal antenna angle. The processor (190) can adjust the antenna direction to the determined horizontal antenna angle and then measure the signal strength while moving the antenna direction vertically by 30 degrees. The processor (190) can determine the angle at which the signal strength is measured to be the vertical antenna angle. That is, in this case, the antenna direction can be determined by performing only the operations described in FIG. 13(a) and FIG. 13(c).

[0189] The rapid mode refers to an operation mode that determines the antenna angle by adjusting the antenna to a predetermined angle based on the current antenna angle. The rapid mode is an operation mode that does not scan the entire antenna angle range. When operating in the rapid mode, the processor (190) can adjust the antenna direction by a predetermined angle from the current antenna angle and then measure the signal strength. If the measured signal strength is greater than or equal to a preset reference value, the processor (190) can determine the corresponding angle as the antenna direction. If the measured signal strength is less than the preset reference value, the processor (190) can adjust the antenna direction by a predetermined angle again based on the current antenna angle and then measure the signal strength. That is, the processor (190) can repeat the operation of adjusting the antenna direction by a predetermined angle and then measuring the signal strength and comparing it with the reference value until the measured signal strength is greater than or equal to the preset reference value.

[0190] After determining the horizontal antenna angle, the processor (190) can apply the same method to the vertical antenna angle to determine the vertical antenna angle.

[0191] In this case, there is an advantage in that a certain level of performance can be secured in that the signal performance is above the reference value, while at the same time being able to quickly determine the antenna angle.

[0192] Meanwhile, the wireless transmission device according to FIG. 10 adjusted the antenna after determining whether the timing of operation corresponds to the antenna auto-tuning mode. According to another embodiment of the present disclosure, the wireless transmission device can adjust the antenna based on the compression ratio (or wireless signal sensitivity) at the time of power on / off.

[0193] Hereinafter, a method of operating a wireless transmission device according to a second embodiment of the present disclosure will be described with reference to FIGS. 15 to 17. FIGS. 15 and 17 are flowcharts illustrating a method of adjusting an antenna based on a compression ratio at the time of power on / off in a wireless transmission device according to an embodiment of the present disclosure.

[0194] FIG. 15 is a flowchart illustrating a method for a wireless transmission device according to an embodiment of the present disclosure to adjust an antenna when receiving a power-on command.

[0195] The processor (190) can receive a power-on command. The processor (190) can obtain whether the power-on command has been received (S101).

[0196] When the processor (190) receives a power-on command, it can determine whether the compression ratio (or RSSI) is included in the first critical section (S103).

[0197] According to one embodiment, when the processor (190) receives a power-on command, it can determine whether the compression ratio is within a first critical range. Here, the first critical range may be 15:1 to 30:1, but this is merely an example and is not limited thereto.

[0198] In another embodiment, when the processor (190) receives a power-on command, it may determine whether the RSSI falls within the first critical interval. Here, the RSSI is merely an example of the performance of the wireless signal. That is, when the processor (190) receives the power-on command, it may determine whether the performance of a wireless signal other than the RSSI falls within the first critical interval. Hereinafter, for convenience of explanation, the embodiment of FIG. 15 is described based on the compression ratio, but the embodiment may also operate based on the performance of a wireless signal such as the RSSI instead of the compression ratio.

[0199] The processor (190) may display a message asking whether to execute operation in antenna auto-tuning mode when the compression ratio (or RSSI) is included in the first critical section (S105).

[0200] The method of displaying a message asking whether to execute the operation in the antenna auto-adjustment mode is the same as that described in Fig. 11, so duplicate description is omitted.

[0201] The processor (190) can determine whether a command to execute the antenna auto-adjustment mode has been received after displaying a message asking whether to execute the antenna auto-adjustment mode (S107).

[0202] The processor (190) can receive a command to execute the antenna automatic adjustment mode through a remote control (300), etc.

[0203] When the processor (190) receives an execution command for the antenna auto-adjustment mode, it can execute the antenna auto-adjustment mode (S109).

[0204] The method of executing the antenna auto-tuning mode is the same as that described in Fig. 12, so duplicate description is omitted.

[0205] After executing the antenna auto-tuning mode, the processor (190) can determine whether the compression ratio (or RSSI) is included in the second or third critical interval (S111).

[0206] The second critical section is a section with a lower compression ratio than the first critical section. That is, the antenna sensitivity when the compression ratio falls within the second critical section is higher than the antenna sensitivity when the compression ratio falls within the first critical section. For example, the second critical section may be 8:1 to 15:1, but this is merely an example and should not be construed as being limited thereto.

[0207] The third critical section is a section with a lower compression ratio than the second critical section. In other words, the antenna sensitivity when the compression ratio falls within the third critical section is higher than when the compression ratio falls within the second critical section. For example, the third critical section may be a section with a compression ratio of 8:1 or less, but this is merely an example and should not be construed as being limited thereto.

[0208] The processor (190) may execute the antenna auto-tuning mode again if the compression ratio (or RSSI) is not included in the second or third threshold interval after executing the antenna auto-tuning mode.

[0209] The processor (190) may terminate the operation if the compression ratio (or RSSI) falls within the second or third threshold interval after executing the antenna auto-tuning mode.

[0210] Meanwhile, when the processor (190) receives a power-on command, if the compression ratio (or RSSI) is not included in the first critical section, it can determine whether the compression ratio (or RSSI) is included in the second critical section (S113).

[0211] The processor (190) may terminate the operation if the compression ratio (or RSSI) is not included in the second threshold interval. The fact that the compression ratio (or RSSI) is not included in both the first and second threshold intervals indicates that the signal quality is excellent, and thus there is no need to perform automatic antenna adjustment or antenna beam adjustment, which will be described later.

[0212] The processor (190) can execute the antenna beam adjustment mode when the compression ratio (or RSSI) is included in the second critical section (S115).

[0213] The second critical range indicates an intermediate antenna sensitivity. Therefore, in this case, the antenna beam steering mode can be implemented to improve the compression ratio by adjusting the beam angle within a 90-degree range through beamforming without rotating the antenna.

[0214] FIG. 16 is a diagram for explaining a method in which a wireless transmission device according to an embodiment of the present disclosure operates in an antenna beam adjustment mode.

[0215] The antenna beam adjustment mode may be an operation mode that finds the angle of the beam with the greatest signal strength through beam forming within a 90-degree range (a range from -45° to +45° based on the antenna direction) while the antenna angle is fixed, and adjusts the angle of the beam to that angle.

[0216] The processor (190) may terminate the operation after executing the antenna beam adjustment mode.

[0217] Next, FIG. 17 is a flowchart illustrating a method for a wireless transmission device according to an embodiment of the present disclosure to adjust an antenna when receiving a power-off command.

[0218] The processor (190) can receive a power off command. The processor (190) can obtain whether the power off command has been received (S201).

[0219] When the processor (190) receives a power-off command, it can determine whether the compression ratio (or RSSI) is included in the first or second critical section (S203).

[0220] The first to third critical sections are as described in Fig. 15.

[0221] The processor (190) can control the black screen when the compression ratio (or RSSI) is included in the first or second critical section (S205).

[0222] The processor (190) may control the display (260) to display a black screen so that it appears as if the power is off while operating in the antenna auto-tuning mode, although the signal quality is poor if the compression ratio (or RSSI) falls within the first or second critical interval.

[0223] The processor (190) can execute the antenna auto-adjustment mode after controlling the black screen (S207).

[0224] The method of executing the antenna auto-tuning mode is the same as that described in Fig. 12, so duplicate description is omitted.

[0225] After executing the antenna auto-tuning mode, the processor (190) can determine whether the compression ratio (or RSSI) is included in the second or third critical interval (S209).

[0226] The processor (190) may be powered off when the compression ratio (or RSSI) falls within the second or third critical interval (S211). The processor (190) may terminate operation after the power is turned off.

[0227] Meanwhile, the first embodiment illustrated in FIG. 10 and the second embodiment illustrated in FIGS. 15 to 17 may be implemented separately. However, the first and second embodiments described above are compatible embodiments, and both the first and second embodiments may be applied to a single wireless transmission device.

[0228] According to one embodiment of the present disclosure, the above-described method can be implemented as processor-readable code on a medium in which a program is recorded. Examples of processor-readable media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, and optical data storage devices.

[0229] The display device described above is not limited to the configuration and method of the embodiments described above, and the embodiments may be configured by selectively combining all or part of each embodiment so that various modifications can be made.

Claims

1. A compression chip that compresses at least one of a video signal and an audio signal; At least one antenna for transmitting a wireless signal compressed by the compression chip; and including a processor controlling the antenna; The above processor Implementing an antenna auto-adjustment mode that automatically adjusts the angle of the above antenna Wireless transmission device.

2. In claim 1, The above processor When the above antenna auto-adjustment mode is performed, a strong electric field sector is searched while changing the angle of the antenna by a first angle unit, and the angle of the antenna is determined based on the signal strength measured while changing it by a second angle unit smaller than the first angle within the searched strong electric field sector. Wireless transmission device.

3. In claim 2, The above processor By searching the above strong field sectors for each of the up-down direction and left-right direction and then determining the direction of the antenna within the searched strong field sector, the up-down angle and left-right angle of the antenna are determined. Wireless transmission device.

4. In claim 1, The above processor When the above antenna auto-adjustment mode is performed, one of the detailed operation modes among precision mode, general mode, and quick mode is selected and operated. Wireless transmission device.

5. In claim 4, The above processor In the above precision mode, the strong field sector is searched while changing by the first angle unit within the entire antenna angle range, and then the angle of the antenna is determined while changing by the second angle unit smaller than the first angle within the searched strong field sector. In the above normal mode, the antenna angle is determined after scanning all adjustable antenna angle ranges, In the above fast mode, the antenna angle is determined by adjusting the antenna to a certain angle based on the current antenna angle. Wireless transmission device.

6. In claim 1, The above processor When the power of the above wireless transmission device is switched from on to off, the antenna operates in auto-tuning mode. Wireless transmission device.

7. In claim 1, The above processor When a change in the position of the above wireless transmission device is detected, the antenna operates in an automatic adjustment mode. Wireless transmission device.

8. In claim 1, The above processor Controls a message to be displayed on the wireless receiving device asking whether to execute the antenna auto-adjustment mode when the signal strength of the wireless signal is below a preset threshold. Wireless transmission device.

9. In claim 1, A vertical adjustment motor for adjusting the angle of the antenna in the vertical direction; and It further includes a left and right adjustment motor for adjusting the angle of the antenna in the left and right directions. Wireless transmission device.

10. In claim 9, A case in which the compression chip, the antenna and the processor are accommodated inside; and It is placed on the upper surface of the case, the antenna is connected to the lower part, and further includes a rotatable plate, The above-mentioned up-and-down adjustment motor adjusts the up-and-down angle of the antenna, The above left and right adjustment motor is installed at the bottom of the plate and rotates the plate to adjust the left and right angle of the antenna. Wireless transmission device.

11. In a wireless display system including a wireless transmitting device and a wireless receiving device, The above wireless transmission device A compression chip that compresses at least one of a video signal and an audio signal, At least one antenna for transmitting a wireless signal compressed by the compression chip, and including a processor controlling the antenna; The above processor Implementing an antenna auto-adjustment mode that automatically adjusts the angle of the above antenna Wireless display system.

12. In claim 11, The above processor When the above antenna auto-adjustment mode is performed, a strong electric field sector is searched while changing the angle of the antenna by a first angle unit, and the angle of the antenna is determined based on the signal strength measured while changing it by a second angle unit smaller than the first angle within the searched strong electric field sector. Wireless display system.

13. In claim 12, The above processor By searching the above strong field sectors for each of the up-down direction and left-right direction and then determining the direction of the antenna within the searched strong field sector, the up-down angle and left-right angle of the antenna are determined. Wireless display system.

14. In claim 11, The above processor When the above antenna auto-adjustment mode is implemented, one of the detailed operation modes among the precision mode, general mode, and quick mode is selected and operated, In the above precision mode, the strong field sector is searched while changing by the first angle unit within the entire antenna angle range, and then the angle of the antenna is determined while changing by the second angle unit smaller than the first angle within the searched strong field sector. In the above normal mode, the antenna angle is determined after scanning all adjustable antenna angle ranges, In the above fast mode, the antenna angle is determined by adjusting the antenna to a certain angle based on the current antenna angle. Wireless display system.

15. In claim 11, An up-and-down adjustment motor for adjusting the angle of the antenna in the up-and-down direction; A left-right adjustment motor for adjusting the angle of the antenna in the left-right direction; A case in which the compression chip, the antenna and the processor are accommodated inside; and It is placed on the upper surface of the case, the antenna is connected to the lower part, and further includes a rotatable plate, The above-mentioned up-and-down adjustment motor adjusts the up-and-down angle of the antenna, The above left and right adjustment motor is installed at the bottom of the plate and rotates the plate to adjust the left and right angle of the antenna. Wireless display system.

Images