A / v transmission device, a / v reception device and wireless display system

Abstract

The present disclosure relates to a wireless display system for wirelessly transmitting and receiving audio / video (A / V) data. An A / V transmission device according to an embodiment of the present disclosure may comprise: a transmission interface for transmitting A / V data to an A / V reception device that has a reception interface including a first antenna module provided at one end of a display and a second antenna module provided at the other end of the display, the transmission interface including a plurality of transmission antennas; and a processor for selecting a first reception beam index and a second reception beam index paired with a transmission beam of the transmission interface for the first antenna module and the second antenna module, respectively, so as to select a plurality of candidate beam pairs capable of transmitting and receiving A / V data and select an optimal beam pair according to a received signal strength indicator (RSSI) measurement result for the plurality of candidate beam pairs.

Description

A / V transmission devices, A / V reception devices, and wireless display systems

[0001] The present disclosure relates to a wireless display system that wirelessly transmits and receives A / V data.

[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 wireless systems, RF (Radio Frequency) communication is performed between the A / V transmitting device and the 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] Typically, the A / V transmitter is positioned in front of the A / V receiver, but this occurs when the signal is transmitted through the side antenna due to the direction in which the A / V transmitter's transmitting antenna is positioned.

[0007] Meanwhile, problems with data transmission and reception quality may occur due to design factors such as antenna covers in A / V receiving devices.

[0008] The present disclosure seeks to provide an A / V transmission device, an A / V reception device, and a wireless display system capable of improving the degree of freedom in the installation direction of the A / V transmission device.

[0009] The present disclosure provides an A / V transmission device, an A / V reception device, and a wireless display system that can ensure a smooth wireless connection without interference by the device configuration of the A / V reception device.

[0010] An A / V (Audio / Video) transmission device according to an embodiment of the present disclosure may include a transmission interface for transmitting A / V data to an A / V reception device having a reception interface including a first antenna module installed at one end of a display and a second antenna module installed at the other end of the display, the transmission interface including a plurality of transmission antennas; and a processor for selecting a first reception beam index and a second reception beam index paired with a transmission beam of the transmission interface for each of the first antenna module and the second antenna module, thereby selecting a plurality of candidate beam pairs capable of transmitting and receiving A / V data, and selecting an optimal beam pair based on a signal quality (RSSI; received signal strength indicator) measurement result for the plurality of candidate beam pairs.

[0011] An A / V (Audio / Video) receiving device according to an embodiment of the present disclosure may include a display; a receiving interface that receives A / V data from a transmission interface of an A / V transmission device, and includes a first antenna module installed at one end of the display and a second antenna module installed at the other end of the display; a microcomputer that selects a first receiving beam index and a second receiving beam index that are paired with a transmission beam of the transmission interface for each of the first antenna module and the second antenna module, thereby selecting a plurality of candidate beam pairs capable of transmitting and receiving A / V data, and selecting an optimal beam pair based on a signal quality (RSSI; received signal strength indicator) measurement result for the plurality of candidate beam pairs.

[0012] In a wireless display system including an A / V (Audio / Video) transmission device and an A / V reception device according to an embodiment of the present disclosure, the A / V reception device includes: a display; and a reception interface that receives A / V data from a transmission interface of the A / V transmission device and has a first antenna module installed at one end of the display and a second antenna module installed at the other end of the display; and the A / V transmission device may include a processor that selects a first reception beam index and a second reception beam index that are paired with a transmission beam of the transmission interface for each of the first antenna module and the second antenna module, thereby selecting a plurality of candidate beam pairs capable of transmitting and receiving A / V data, and selects an optimal beam pair for the plurality of candidate beam pairs based on a signal quality (RSSI; received signal strength indicator) measurement result.

[0013] According to at least one of the various embodiments of the present disclosure, the degree of freedom with respect to the installation direction of an A / V transmission device can be improved.

[0014] The present disclosure can ensure a smooth wireless connection without interference by the device configuration of an A / V receiving device.

[0015] The present disclosure enables stable data transmission without being dependent on the device configuration of an A / V receiving device and the location of an A / V transmitting device by means of a beam operation method performed individually for a first antenna module and a second antenna module.

[0016] Meanwhile, according to the present disclosure, depending on the location of the A / V transmission device, a connection status can be checked and, in some cases, one antenna module can be turned off. Accordingly, power consumption during data transmission and reception can be improved.

[0017] In addition to the effects described above, the specific effects of the present disclosure are described below together with specific details.

[0018] FIGS. 1 and 2 are drawings explaining the configuration of a display system according to one embodiment of the present disclosure.

[0019] FIG. 3 is a block diagram illustrating the configuration of a remote control device according to one embodiment of the present disclosure.

[0020] Figure 4a is a perspective view of an A / V transmission device.

[0021] Figure 4b is a drawing explaining the internal structure of an A / V transmission device.

[0022] Figure 4c is a drawing illustrating an RF receiving interface of an A / V receiving device.

[0023] FIG. 5 is a partially cut-away perspective view showing an example of an RF receiving interface of an A / V receiving device installed.

[0024] Fig. 6 is a diagram showing the radiation pattern of the antenna module of the RF receiving interface in the state of Fig. 5.

[0025] Figure 7 is a partially cut-away perspective view showing another example of an RF receiving interface of an A / V receiving device installed.

[0026] Fig. 8 is a diagram showing the radiation pattern of the antenna module of the RF receiving interface in the state of Fig. 7.

[0027] Figure 9 is a graph showing the radiation pattern of Figure 6 and the radiation pattern of Figure 8 together.

[0028] FIG. 10 is a front view showing an A / V receiving device according to an embodiment of the present disclosure.

[0029] FIG. 11 is a diagram showing an RF receiving interface of an A / V receiving device according to one embodiment of the present disclosure.

[0030] Fig. 12 is a schematic diagram showing a connection state of an A / V transmission device and an A / V reception device according to an embodiment of the present disclosure. Fig. 13 is an external view showing a connection state of an A / V transmission device and an A / V reception device according to an embodiment of the present disclosure.

[0031] Fig. 14 is a diagram showing the beam ID of the antenna module of the A / V receiving device.

[0032] Figure 15 is a diagram showing the beam ID of the antenna of the A / V transmission device.

[0033] FIG. 16 is a schematic diagram illustrating a process for selecting an optimal beam pair between an A / V transmitting device and an A / V receiving device according to one embodiment of the present disclosure.

[0034] FIG. 17 is a diagram illustrating a process of selecting an optimal beam pair between an A / V transmission device and an A / V reception device according to an embodiment of the present disclosure, centered on a beam ID.

[0035] FIGS. 18 to 20 are flowcharts illustrating a process for selecting an optimal beam pair between an A / V transmitting device and an A / V receiving device according to an embodiment of the present disclosure.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] FIGS. 1 and 2 are drawings illustrating the configuration of a wireless display system according to an embodiment of the present disclosure.

[0040] 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).

[0041] 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.

[0042] 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.

[0043] The A / V transmission device (100) may be a set-top box.

[0044] 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).

[0045] 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.

[0046] An A / V transmission device (100) and an A / V reception device (200) can constitute a video wall display system.

[0047] 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.

[0048] 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.

[0049] The type of content video can include still image type, general video type, and game video type.

[0050] 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).

[0051] 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.

[0052] Figure 2 is a block diagram illustrating the detailed configuration of an A / V transmission device (100) and an A / V reception device (200).

[0053] 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).

[0054] The microphone (110) can receive an audio signal and transmit it to the processor (190).

[0055] The microphone (110) can receive the voice spoken by the user.

[0056] The wireless communication interface (120) may include one or more of a Wi-Fi module and a Bluetooth module.

[0057] The Wi-Fi module can perform wireless communication with an external device or A / V receiving device (200) through the Wi-Fi standard.

[0058] The Bluetooth module can perform wireless communication through the Bluetooth Low Energy (BLE) standard.

[0059] 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.

[0060] The wireless communication interface (120) may also have a tuner for receiving broadcast signals.

[0061] 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.

[0062] The wired communication interface (130) can receive a video signal or audio signal from an external device.

[0063] The memory (140) stores a program for signal processing and control, and can store signal-processed image, voice, or data signals.

[0064] 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.

[0065] 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).

[0066] The compression chip (150) may be equipped with an encoder for compressing a video signal or an audio signal.

[0067] 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.

[0068] The RF transmission interface (160) may include one or more antennas.

[0069] The RF transmission interface (160) can transmit a compressed A / V signal in digital form to the RF reception interface (240).

[0070] The RF transmission interface (160) can transmit A / V signals to the RF reception interface (240) through one or more channels.

[0071] 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).

[0072] The processor (190) may also include a compression chip (150).

[0073] 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).

[0074] The wireless communication interface (210) may include a Wi-Fi module, a Bluetooth module, and an IR module.

[0075] The Wi-Fi module can perform wireless communication through the Wi-Fi standard.

[0076] The Wi-Fi module can perform wireless communication with an external device or A / V transmission device (100) through the Wi-Fi standard.

[0077] The Bluetooth module can perform wireless communication through the Bluetooth Low Energy (BLE) standard.

[0078] 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.

[0079] The IR module can receive signals from a remote control (300) to be described later via IR (Infrared) communication.

[0080] The wired communication interface (220) may be an interface for wired connection with an external device. The wired communication interface (220) may include multiple HDMI (High Definition Multimedia Interface) terminals or USB (Universal Serial Bus) ports.

[0081] The wired communication interface (220) can receive a video signal or audio signal from an external device.

[0082] The RF receiving interface (240) can receive a compressed A / V signal from the RF transmitting interface (160).

[0083] The RF receiving interface (240) may include multiple antennas. The RF receiving interface (240) may be positioned at the bottom of the display (260).

[0084] 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.

[0085] 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).

[0086] The memory (250) stores a program for signal processing and control, and can store signal-processed image, voice, or data signals.

[0087] The display (260) can display a video signal received from the microcomputer (290).

[0088] The display (260) can display a video signal according to the operation of a timing controller (not shown).

[0089] 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.

[0090] The microcomputer (290) can control the overall operation of the A / V receiving device (200).

[0091] The microcomputer (290) can output a restored image signal through a display (260) and output a restored audio signal through a speaker (270).

[0092] FIG. 3 is a block diagram illustrating the configuration of a remote control device according to one embodiment of the present disclosure.

[0093] 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).

[0094] 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).

[0095] The wireless communication interface (310) may include a Bluetooth Low Energy (BLE) module (311) and an IR (InfraRed) module (313).

[0096] 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).

[0097] 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).

[0098] The user input interface (330) may be composed of a keypad, buttons, a touch pad, or a touch screen.

[0099] 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.

[0100] When the user input interface (330) has a hard key button, the user can operate the hard key by pushing the hard key button.

[0101] 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.

[0102] The memory (350) can store a program for the operation of the controller (390) and can also temporarily store input / output data.

[0103] The controller (390) controls the operations associated with the application and, typically, the overall operation of the remote control device (300).

[0104] Fig. 4a is a perspective view of an A / V transmission device, Fig. 4b is a drawing explaining the internal structure of the A / V transmission device, and Fig. 4c is a drawing explaining an RF reception interface of an A / V reception device.

[0105] Referring to FIG. 4a, the A / V transmission device (100) may include a box (410), a sliding button receiving portion (401) that receives a sliding button (401a), a dial (403), a power status display portion (405), and a communication quality status display portion (407).

[0106] The interior of the box (410) may contain components of the A / V transmission device (100) described in FIG. 2. The box (410) may be a housing that includes components of the A / V transmission device (100) described in FIG. 2.

[0107] The sliding button (401a) may be a means for controlling the vertical direction (tilting control) of the RF transmission interface (160) illustrated in FIG. 4b.

[0108] The dial (403) may be a means for controlling the horizontal rotation direction (panning control) of the RF transmission interface (160) illustrated in FIG. 4b.

[0109] The power status indicator (405) can indicate the power on or off status of the A / V transmission device (100). The power status indicator (405) can have one or more LEDs.

[0110] The communication quality status display unit (407) can indicate the communication quality status between the A / V transmission device (100) and the A / V reception device (200). The communication quality status display unit (407) can be equipped with one or more LEDs.

[0111] The communication quality status display unit (407) may not be provided in the box (410) as it is an optional configuration.

[0112] The processor (190) can receive pointing correction input through a sliding button (401a) or a dial (403).

[0113] The processor (190) can tilt the RF transmission interface (160) including the transmission antennas up and down according to an input that moves the sliding button (401a).

[0114] The RF transmission interface (160) may include a substrate and a plurality of transmission antennas. The RF transmission interface (160) may be provided on top of a heat sink (611) that discharges heat generated inside the box (410).

[0115] The processor (190) can rotate or pan the RF transmission interface (160) including the transmission antennas left and right in response to an input that moves the dial (403).

[0116] The user can perform antenna pointing correction by operating the sliding button (401a) or dial (403) while looking at the antenna guide used to adjust the direction of the transmitting antenna.

[0117] According to another embodiment of the present disclosure, a motor (not shown) for automatically controlling tilting of the RF transmission interface (160) according to information about the determined vertical correction angle and a motor (not shown) for automatically controlling panning of the RF transmission interface (160) according to information about the determined horizontal correction angle may be further provided in the box (410).

[0118] In this case, the RF transmission interface (160) can be set to have an optimal layout structure without a separate guide, thereby maximizing user convenience.

[0119] Referring to FIG. 4c, an RF receiving interface (240) may be provided at the bottom of the display (260) of the A / V receiving device (200).

[0120] The RF receiving interface (240) includes a plurality of receiving antennas and receives A / V data from the A / V transmitting device (100).

[0121] The RF receiving interface (240) may include a front antenna group (241) facing the front, a bottom antenna group (243) facing the bottom, a left side antenna group (245) facing the left side, and a right side antenna group (247) facing the right side.

[0122] The number of antennas may decrease in the order of front antenna group (241), bottom antenna group (243), left side antenna group (245), and right side antenna group (247).

[0123] Fig. 5 is a partially cut-away perspective view showing an example of an RF receiving interface of an A / V receiving device installed. Fig. 6 is a diagram showing a radiation pattern of an antenna module of the RF receiving interface in the state of Fig. 5.

[0124] Referring to FIG. 5, the RF receiving interface (240) mainly represents the portion where the antenna groups are installed. This RF receiving interface (240) may be located on the lower side of the frame (261) supporting the display (260). This RF receiving interface (240) may typically be located in the central portion of the display (260).

[0125] A cover (262) that covers the details of the RF receiving interface (240) may be positioned on the outside of the RF receiving interface (240). The cover (262) may serve to improve the appearance by covering components such as a PCB including the RF receiving interface (240).

[0126] When the cover (262) covers only a portion of the RF receiving interface (240), an electric field can be formed in the open portion of the cover (262), as shown in FIG. 6, so it can be seen that the radiation pattern is good.

[0127] Fig. 7 is a partially cut-away perspective view showing another example of an RF receiving interface of an A / V receiving device installed. Fig. 8 is a diagram showing a radiation pattern of an antenna module of the RF receiving interface in the state of Fig. 7.

[0128] Similar to the case of FIG. 5, a cover (263) may be positioned on the outside of the RF receiving interface (240) to cover the details of the RF receiving interface (240). This cover (263) may serve to improve the appearance by covering components such as a PCB including the RF receiving interface (240). This cover (263) may completely cover the portion where the RF receiving interface (240) is positioned. In this way, when the lower side of the display (260) is completely covered, the appearance may be further improved.

[0129] In this way, when the cover (263) covers the space in the left and right directions including the part where the RF receiving interface (240) is located, as shown in FIG. 8, it can be seen that the cover (263) can suppress the formation of an electric field at the RF receiving interface (240), thereby partially limiting the radiation pattern. Accordingly, communication at some angles in the lateral direction of the A / V receiving device (200) can be limited.

[0130] Figure 9 is a graph showing the radiation pattern of Figure 6 and the radiation pattern of Figure 8 together.

[0131] Referring to Fig. 9, in the case of Fig. 6 (actual situation), a radiation pattern centered around the 90-degree direction may be well displayed, but in the case of Fig. 8 (dotted line), a break in the radiation pattern occurs approximately centered around the 90-degree direction. Accordingly, the RF receiving interface (240) may need to be modified so that such a break in the radiation pattern does not occur.

[0132] Fig. 10 is a front view illustrating an A / V receiving device according to an embodiment of the present disclosure. Fig. 11 is a diagram illustrating an RF receiving interface of an A / V receiving device according to an embodiment of the present disclosure.

[0133] Referring to FIG. 10, the A / V receiving device (200) may include an RF receiving interface (240) and a display (260). Here, the display (260) may be supported by a frame (262).

[0134] Here, the RF receiving interface (240) may include a first antenna module (242; Rx0) and a second antenna module (244; Rx1). In addition, the RF receiving interface (240) may further include an infrared (IR) PCB (246b) for operation of a radar (246a) and / or a remote control.

[0135] Referring to FIG. 10, the first antenna module (242; Rx0) and the second antenna module (244; Rx1) may be positioned at one end and the other end of the display (260), respectively. In this way, the first antenna module (242; Rx0) and the second antenna module (244; Rx1) may be positioned at one end and the other end of the display (260), respectively, so that even if the cover (263) entirely covers the lower side of the display (260), no break may occur in the antenna radiation pattern. Accordingly, the connection state with the A / V power device (100) may be improved in a state where the cover (263) entirely covers the lower side of the display (260).

[0136] Meanwhile, regardless of the arrangement of the cover (263), the connection limitation with the A / V receiving device (200) depending on the location of the A / V transmitting device (100) can be improved by the arrangement of the antenna modules (242, 244).

[0137] For example, even if the A / V transmission device (100) is located at the left and right squares of the A / V reception device (200), a smooth wireless connection between the A / V transmission device (100) and the A / V reception device (200) can be secured.

[0138] Fig. 12 is a schematic diagram showing a connection state of an A / V transmission device and an A / V reception device according to an embodiment of the present disclosure. Fig. 13 is an external view showing a connection state of an A / V transmission device and an A / V reception device according to an embodiment of the present disclosure.

[0139] First, referring to FIGS. 12 and 13, the operation process of the wireless display system will be described from the perspective of the A / V transmission device (100). In FIG. 12, the A / V transmission device (100) is indicated as a transmitting side (Tx; Box). In addition, the A / V transmission device (Tx) may optionally be located on the left and right sides and the front of the A / V receiving device (200).

[0140] As described above, the A / V receiving device (200) may include a receiving interface having a first antenna module (Rx0) installed at one end of the display (260) and a second antenna module (Rx1) installed at the other end of the display (260).

[0141] The A / V transmission device (100) may include a transmission interface (160) that transmits A / V data to the A / V reception device (200). At this time, the transmission interface (160) may include a plurality of transmission antennas.

[0142] The processor (190) of the A / V transmission device (100) selects a first reception beam index and a second reception beam index that are paired with the transmission beam of the transmission interface (160) for each of the first antenna module (Rx0) and the second antenna module (Rx1), respectively, to select a plurality of candidate beam pairs capable of transmitting and receiving A / V data, and selects an optimal beam pair based on a signal quality (RSSI; received signal strength indicator) measurement result for these plurality of candidate beam pairs.

[0143] Accordingly, the processor (190) of the A / V transmission device (100) can transmit A / V data to the A / V reception device (200) by the optimal beam pair selected in this manner.

[0144] Below, the process of selecting the optimal beam pair is described in detail.

[0145] Fig. 14 is a diagram showing the beam ID of the antenna module of an A / V receiving device. Fig. 15 is a diagram showing the beam ID of the antenna of an A / V transmitting device.

[0146] As described above, the RF receiving interface (240) may include a first antenna module (242; Rx0) and a second antenna module (244; Rx1). The first antenna module (242; Rx0) and the second antenna module (244; Rx1) may each include a plurality of antennas. That is, the first antenna module (242; Rx0) and the second antenna module (244; Rx1) may each include a front antenna group (241) facing the front, a bottom antenna group (243) facing the bottom, a left antenna group (245) facing the left side, and a right antenna group (247) facing the right side, as illustrated in FIG. 4C. Such antennas may be referred to as an antenna array.

[0147] A beam ID, as shown in Fig. 14, can be set by the beam pattern radiated from such an antenna. Each beam ID can be generated by a combination of the radiation patterns radiated from each antenna array.

[0148] Meanwhile, the A / V transmission device (100) may include an RF transmission interface (160), and the RF transmission interface (160) may include one or more antennas (antenna array).

[0149] A beam ID (ID) as shown in Fig. 15 can be set by the beam pattern radiated from these antennas. Each beam ID can be generated by a combination of the radiation patterns radiated from each antenna array.

[0150] At this time, the processor (190) independently selects a beam pair for the first antenna module (242; Rx0) and the second antenna module (244; Rx1), and accordingly selects an optimal beam pair to establish a wireless connection.

[0151] For example, the processor (190) may select a first reception beam index and a second reception beam index that are paired with the transmission beam of the transmission interface (160) for each of the first antenna module (Rx0) and the second antenna module (Rx1), thereby selecting a plurality of candidate beam pairs capable of transmitting and receiving A / V data.

[0152] Thereafter, the processor (190) can select the optimal beam pair based on the signal quality (RSSI; received signal strength indicator) measurement results for these multiple candidate beam pairs.

[0153] Referring to FIGS. 14 and 15, an example is shown in which, when an A / V transmitting device (100; Tx) is located approximately in front of an A / V receiving device (200), Tx beam ID 1 is selected as an optimal beam pair with Rx beam ID 14 and ID 16, and Tx beam ID 5 is selected as an optimal beam pair with Rx beam ID 14 and ID 16.

[0154] FIG. 16 is a schematic diagram illustrating a process for selecting an optimal beam pair between an A / V transmission device and an A / V reception device according to an embodiment of the present disclosure. FIG. 17 is a diagram illustrating a process for selecting an optimal beam pair between an A / V transmission device and an A / V reception device according to an embodiment of the present disclosure, centered on a beam ID.

[0155] FIGS. 18 to 20 are flowcharts illustrating a process for selecting an optimal beam pair between an A / V transmitting device and an A / V receiving device according to an embodiment of the present disclosure.

[0156] Hereinafter, with reference to FIGS. 14 to 20, a process for selecting an optimal beam pair between an A / V transmission device (100) and an A / V reception device (200) according to one embodiment of the present disclosure will be described in detail.

[0157] The steps illustrated in FIGS. 18 to 20 may be performed in the processor (190) of the A / V transmission device (100). Meanwhile, the steps illustrated in FIGS. 18 to 20 may also be performed in the microcomputer (290) of the A / V reception device (200). As an example, the following operations describe a case where they are performed in the processor (190) of the A / V transmission device (100).

[0158] Referring to FIG. 18, first, the processor (190) can measure the signal quality (received signal strength indicator; RSSI) of the beam. For example, the processor (190) can periodically measure the signal quality of beam pairs (S100).

[0159] For the beams indicated by the beam ID described above, beam pairs capable of transmitting and receiving data between the first antenna module (Rx0) and the second antenna module (Rx1) of the transmitting side (Tx) and the receiving side can be selected (S200).

[0160] Afterwards, among the beam pairs capable of transmitting and receiving these data, the signal quality (RSSI) can be compared to select the optimal beam pair (S300).

[0161] For example, for the antenna module (Rx0) and the second antenna module (Rx1), beam indices (beam IDs) of the antenna module (Rx0) / the second antenna module (Rx1) that are paired to the transmitting side (Tx) beam can be selected, respectively, based on the maximum RSSI of each.

[0162] At this time, the processor (190) can select up to two optimal beam pairs. For example, the processor (190) can select an optimal beam pair (first beam pair) for each first antenna module (Rx0) and an optimal beam pair (second beam pair) for each second antenna module (Rx1).

[0163] The processor (190) can select two optimal beam pairs when the RSSI of the first beam pair and the RSSI of the second beam pair are within a certain threshold.

[0164] Meanwhile, the processor (190) may select the beam pair as a beam pair within the line of sight (LOS) if either the RSSI of the first beam pair or the RSSI of the second beam pair is within a certain threshold.

[0165] If data transmission and reception is possible with one beam pair, the power required for data transmission and reception can be reduced.

[0166] In this way, once the optimal beam pair is determined, data can be transmitted and received along the communication path formed by this beam pair.

[0167] Thereafter, the processor (190) can perform a periodic beam candidate update process based on environmental changes (beam tracking; S400).

[0168] Referring to FIG. 19, the process of selecting these candidate beams can first sequentially search for the same beam ID (Beam index) for each of the first antenna module (Rx0) and the second antenna module (Rx1) (S210).

[0169] Accordingly, the beam index of the first antenna module (Rx0) and the second antenna module (Rx1) to be paired to the transmitting side (Tx) beam can be selected for the first antenna module (Rx0) and the second antenna module (Rx1), respectively (S220).

[0170] Referring to FIG. 20, in the process of determining the optimal beam pair (S300), one optimal beam (Best Beam) based on the first antenna module (Rx0) and one optimal beam (Best Beam) based on the second antenna module (Rx1) can be selected for each combination of all beam pairs (S310).

[0171] In this way, when the pair of the first antenna module (Rx0) and the second antenna module (Rx1) for each Tx Beam Index is determined, up to two optimal beams and LOS regions can be set. Referring to FIGS. 16 and 17, based on Tx beam ID 1, the 26th and 14th beams are selected as optimal beams for Rx0, and based on Tx beam ID 5, the 26th and 14th beams are selected as optimal beams for Rx1.

[0172] As mentioned above, such an operation may be performed in the A / V receiving device (200). For example, such an operation may be performed in the microcomputer (290) of the A / V receiving device (200).

[0173] For example, the microcomputer (290) selects a first reception beam index and a second reception beam index that are paired with the transmission beam of the transmission interface for each of the first antenna module (Rx0) and the second antenna module (Rx1), respectively, to select a plurality of candidate beam pairs capable of transmitting and receiving A / V data, and selects an optimal beam pair based on the signal quality (RSSI; received signal strength indicator) measurement results for the plurality of candidate beam pairs.

[0174] As described above, by performing beam operation individually for the first antenna module (Rx0) and the second antenna module (Rx1), stable data transmission can be achieved without being dependent on the device configuration of the A / V receiving device (200) and the location of the A / V transmitting device (100).

[0175] Meanwhile, depending on the location of the A / V transmission device (100), a connection status can be checked and, in some cases, one antenna module can be turned off. Accordingly, power consumption in data transmission and reception can be improved.

[0176] 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.

[0177] The A / V transmission device (100) or A / V reception device (200) 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.

[0178] According to one embodiment of the present disclosure, a wireless display system for transmitting and receiving A / V data wirelessly can be provided.

Claims

1. In A / V (Audio / Video) transmission devices, A transmitting interface for transmitting A / V data to an A / V receiving device having a receiving interface including a first antenna module installed at one end of a display and a second antenna module installed at the other end of the display, the transmitting interface including a plurality of transmitting antennas; and A processor is included that selects a plurality of candidate beam pairs capable of transmitting and receiving A / V data by selecting a first reception beam index and a second reception beam index that are paired with a transmission beam of the transmission interface for each of the first antenna module and the second antenna module, and selects an optimal beam pair based on a signal quality (RSSI; received signal strength indicator) measurement result for the plurality of candidate beam pairs. A / V transmission device.

2. In paragraph 1, The above processor Independently selecting beam pairs for the first antenna module and the second antenna module A / V transmission device.

3. In paragraph 1, The above signal quality measurement is, For each of the first antenna module and the second antenna module, sequential beam search is performed for all the same beam indices. A / V transmission device.

4. In paragraph 1, The above processor Selecting up to two optimal beam pairs A / V transmission device.

5. In paragraph 1, The above processor When the RSSI of the first beam pair and the RSSI of the second beam pair are within a certain threshold, the two optimal beam pairs are selected. A / V transmission device.

6. In paragraph 1, The above processor If either the RSSI of the first beam pair or the RSSI of the second beam pair is within a certain threshold, the beam pair is selected as a beam pair within the line of sight (LOS). A / V transmission device.

7. In paragraph 1, The above processor Performs a periodic beam candidate update process based on environmental changes. A / V transmission device.

8. In A / V (Audio / Video) receiving devices, display; A receiving interface that receives A / V data from a transmitting interface of an A / V transmission device and includes a first antenna module installed at one end of the display and a second antenna module installed at the other end of the display; A microcomputer is included that selects a plurality of candidate beam pairs capable of transmitting and receiving A / V data by selecting a first reception beam index and a second reception beam index that are paired with the transmission beam of the transmission interface for each of the first antenna module and the second antenna module, and selects an optimal beam pair based on a signal quality (RSSI; received signal strength indicator) measurement result for the plurality of candidate beam pairs. A / V receiving device.

9. In paragraph 8, The above microcomputer Independently selecting beam pairs for the first antenna module and the second antenna module A / V receiving device.

10. In paragraph 8, The above signal quality measurement is, For each of the first antenna module and the second antenna module, sequential beam search is performed for all the same beam indices. A / V receiving device.

11. In paragraph 8, The above microcomputer Selecting up to two optimal beam pairs A / V receiving device.

12. In paragraph 8, The above microcomputer When the RSSI of the first beam pair and the RSSI of the second beam pair are within a certain threshold, the two optimal beam pairs are selected. A / V receiving device.

13. In paragraph 8, The above microcomputer If either the RSSI of the first beam pair or the RSSI of the second beam pair is within a certain threshold, the beam pair is selected as a beam pair within the line of sight (LOS). A / V receiving device.

14. In paragraph 8, The above microcomputer Performs a periodic beam candidate update process based on environmental changes. A / V receiving device.

15. A wireless display system including an A / V (Audio / Video) transmission device and an A / V receiving device having a display, The above A / V receiving device display; and A receiving interface for receiving A / V data from a transmitting interface of an A / V transmission device, and including a first antenna module installed at one end of the display and a second antenna module installed at the other end of the display, The above A / V transmission device A processor is included that selects a plurality of candidate beam pairs capable of transmitting and receiving A / V data by selecting a first reception beam index and a second reception beam index that are paired with a transmission beam of the transmission interface for each of the first antenna module and the second antenna module, and selects an optimal beam pair based on a signal quality (RSSI; received signal strength indicator) measurement result for the plurality of candidate beam pairs. Wireless display system.

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