# US 2022/0093055 A1 · Electronic devices, method of transmitting data block, method of determining contents of transmission signal, and transmission/reception system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0093055 A1 - Document ID: US20220093055A1 - Status: Published application - Kind: A1 - Application number: 17/542,000 - Filed: 2021-12-03 - Published: 2022-03-24 - Earliest claimed: 2013-01-11 - Assignees: Sony Group Corporation - Applicants: Sony Group Corporation - Inventors: KAZUAKI TOBA; GEN ICHIMURA - Web page: https://patentgrep.com/patent/US20220093055A1 ## CPC - G09G 5/003: {Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092)} - G09G 5/006: {Details of the interface to the display terminal (specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04)} - H04N 5/38: Transmitter circuitry {for the transmission of television signals according to analogue transmission standards} (H04N5/14 takes precedence) - H04N 7/01: Conversion of standards {, e.g. involving analogue television standards or digital television standards processed at pixel level} - H04N 21/4516: {involving client characteristics, e.g. Set-Top-Box type, software version or amount of memory available} - G09G 2370/042: for monitor identification - G09G 2370/047: using display data channel standard [DDC] communication - G09G 2370/06: Consumer Electronics Control, i.e. control of another device by a display or vice versa - G09G 2370/12: Use of DVI or HDMI protocol in interfaces along the display data pipeline - H04N 21/43635: {HDMI} - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION ## Abstract Damaging a device that is not compatible with a functional extension is to be avoided. A signal is transmitted to an external device through a transmission channel. A data block containing capability information indicating existence/non-existence of compatibility with an extended function is received from the external device through the transmission channel. A layer field that indicates the connection layer is provided in this data block. A check is made to determine whether all the devices existing in the path are compatible with the extended function based on the value of the layer field provided in the data block, and the contents of the transmission signal are then determined. ## Claims ### Claim 1 A display device, comprising: circuitry configured to: transmit specific Enhanced Extended Display Identification Data (E-EDID) to a repeater device via a Display Data Channel (DDC) of a High Definition Multimedia Interface (HDMI) cable, wherein the specific E-EDID includes a first Vendor Specific Data Block (VSDB) and a second VSDB, the second VSDB includes a specific field that includes a value changeable from a first value to a second value by the repeater device based on support of at least one extended function, the first VSDB includes four fields that correspond to a physical address of the repeater device, and the specific field is different from each of the four fields; receive an output from the repeater device via at least one Transition Minimized Differential Signaling (TMDS) channel of the HDMI cable, wherein the output corresponds to an output of a transmission device based on the value of the specific field; and output the received output via a display screen. ### Claim 2 (depends on 1) The display device according to claim 1, further comprising the display screen configured to display the received output, wherein the display screen is one of a liquid crystal display or an organic electroluminescence display. ### Claim 3 (depends on 1) The display device according to claim 1, wherein the received output includes video data and does not include audio data corresponding to the video data. ### Claim 4 (depends on 3) The display device according to claim 3, wherein the audio data corresponding to the video data is reproduced by an audio output device equipped to the repeater device. ### Claim 5 (depends on 2) The display device according to claim 2, wherein the output of the transmission device is determined by the transmission device based on compatibility information associated with the at least one extended function when the specific field in an E-EDID based on the specific E-EDID has a value of 1, and the output of the transmission device is not determined by the transmission device based on the compatibility information when the specific field in the E-EDID based on the specific E-EDID has a value of 0. ### Claim 6 (depends on 2) The display device according to claim 2, wherein the value of the specific field corresponds to a number of repeater devices in a connection path between the display device and the transmission device when the transmission device receives an E-EDID from the repeater device of the number of repeater devices. ### Claim 7 (depends on 2) The display device according to claim 2, wherein the at least one extended function corresponds to at least one of a transmission rate, a number of transmission lanes, a coding method, signal amplitude, a clock transmission method, or bidirectional transmission. ### Claim 8 (depends on 1) The display device according to claim 1, wherein the second VSDB includes compatibility information indicating support of an extended function different from a function defined by an HDMI standard. ### Claim 9 A first repeater device, comprising: circuitry configured to: receive first Enhanced Extended Display Identification Data (E-EDID) from a display device via a Display Data Channel (DDC) of a first High Definition Multimedia Interface (HDMI) cable; transmit a second E-EDID to one of a second repeater device or a transmission device via a DDC of a second HDMI cable, wherein the first E-EDID includes a first Vendor Specific Data Block (VSDB) and a second VSDB, the second VSDB includes a specific field that includes a value changeable from a first value to a second value by the first repeater device based on support of at least one extended function, the first VSDB includes four fields that correspond to a physical address of the first repeater device, and the specific field is different from each of the four fields; receive an output of the transmission device, based on the value of the specific field, from one of the second repeater device or the transmission device via at least one Transition Minimized Differential Signaling (TMDS) channel of the second HDMI cable; and transmit an output corresponding to the received output of the transmission device via at least one TMDS channel of the first HDMI cable. ### Claim 10 (depends on 9) The first repeater device according to claim 9, wherein the received output of the transmission device includes video data and audio data corresponding to the video data, and the circuitry is further configured to: transmit the video data to the display device via the first HDMI cable; and transmit the audio data to at least one speaker equipped to the first repeater device. ### Claim 11 (depends on 10) The first repeater device according to claim 10, wherein the at least one speaker equipped to the first repeater device is an external speaker connected to the first repeater device. ### Claim 12 (depends on 10) The first repeater device according to claim 10, wherein the first repeater device is an audio amplifier. ### Claim 13 (depends on 10) The first repeater device according to claim 10, wherein the output of the transmission device is determined by the transmission device based on compatibility information associated with the at least one extended function when the specific field in an E-EDID based on the second E-EDID has a value of 1, and the output of the transmission device is not determined by the transmission device based on the compatibility information when the specific field in the E-EDID based on the second E-EDID has a value of 0. ### Claim 14 (depends on 10) The first repeater device according to claim 10, wherein the value of the specific field corresponds to a number of repeater devices in a connection path between the display device and the transmission device when the transmission device receives an E-EDID from the first repeater device of a number repeater devices. ### Claim 15 (depends on 10) The first repeater device according to claim 10, wherein the at least one extended function corresponds to at least one of a transmission rate, a number of transmission lanes, a coding method, signal amplitude, a clock transmission method, or bidirectional transmission. ### Claim 16 (depends on 9) The first repeater device according to claim 9, wherein the second VSDB includes compatibility information indicating support of an extended function different from a function defined by an HDMI standard. ### Claim 17 A system, comprising: a display device; and a first repeater device that includes first circuitry configured to: receive first Enhanced Extended Display Identification Data (E-EDID) from the display device via a Display Data Channel (DDC) of a first High Definition Multimedia Interface (HDMI) cable; transmit a second E-EDID to one of a second repeater device or a transmission device via a DDC of a second HDMI cable, wherein the first E-EDID includes a first Vendor Specific Data Block (VSDB) and a second VSDB, the second VSDB includes a specific field having a value changeable from a first value to a second value by the first repeater device based on support of at least one extended function, the first VSDB includes four fields that correspond to a physical address of the first repeater device, and the specific field is different from each of the four fields; receive an output of the transmission device, based on the value of the specific field, from one of the second repeater device or the transmission device via at least one Transition Minimized Differential Signaling (TMDS) channel of the second HDMI cable; and transmit an output based on the received output of the transmission device via at least one TMDS channel of the first HDMI cable, wherein the display device includes second circuitry configured to: transmit the first E-EDID to the first repeater device via the DDC of the first HDMI cable; receive the output corresponding to the output of the transmission device from the first repeater device via the at least one TMDS channel of the first HDMI cable; and output the received output through a display screen. ### Claim 18 (depends on 17) The system according to claim 17, wherein the display device further comprises the display screen configured to display the received output, and the display screen is one of a liquid crystal display or an organic electroluminescence display. ### Claim 19 (depends on 18) The system according to claim 18, wherein the output of the transmission device includes video data and audio data corresponding to the video data, the first circuitry is further configured to: transmit the video data to the display device via the first HDMI cable; and transmit the audio data to at least one speaker equipped to the first repeater device, and the display screen of the display device is further configured to display the video data. ### Claim 20 (depends on 17) The system according to claim 17, wherein the second VSDB includes compatibility information indicating support of an extended function different from a function defined by an HDMI standard.