# US 2021/0281908 A1 ยท Transmission apparatus, transmission method, receiving apparatus, and receiving method > Agents: this data is available as JSON from the patentgrep API and MCP server โ€” see https://patentgrep.com/llms.txt - Number: US 2021/0281908 A1 - Document ID: US20210281908A1 - Status: Published application - Kind: A1 - Application number: 16/328,504 - Filed: 2017-09-14 - Published: 2021-09-09 - Earliest claimed: 2016-09-30 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: GEN ICHIMURA - Web page: https://patentgrep.com/patent/US20210281908A1 ## CPC - H04N 21/439: Processing of audio elementary streams - H04N 21/4396: {by muting the audio signal} - G10L 19/00: Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis (in musical instruments G10H) - H04L 1/00: Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L7/00)} - H04N 21/4104: {Peripherals receiving signals from specially adapted client devices} - H04N 21/43079: {of additional data with content streams on multiple devices} - H04N 21/435: Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream - H04N 21/436: Interfacing a local distribution network, e.g. communicating with another STB {or one or more peripheral devices} inside the home - H04N 21/43635: {HDMI} - H04N 21/4367: Establishing a secure communication between the client and a peripheral device or smart card - H04N 21/4398: {involving reformatting operations of audio signals (details of audio signal transcoding G10L19/173)} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - G10L: SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract To allow special processing while processing is synchronized between a transmission side and a reception side. Each audio data unit of audio data is sequentially transmitted to a reception side via a predetermined transfer channel. A counter value and a parity value associated with the counter value are, for every predetermined number of audio data units, added to the audio data. Predetermined information is transmitted to the reception side with the counter value and the parity value being in a predetermined state based on a preset rule. ## Claims ### Claim 1 A transmission apparatus comprising: a data transmitter configured to sequentially transmit each audio data unit of audio data to a reception side via a predetermined transfer channel; and an information adder configured to add, for every predetermined number of audio data units, a counter value and a parity value associated with the counter value to the audio data transmitted by the data transmitter, wherein predetermined information is transmitted to the reception side with the counter value and the parity value being in a predetermined state based on a preset rule. ### Claim 2 (depends on 1) The transmission apparatus according to claim 1, wherein the predetermined information is information indicating that audio of the audio data needs to be muted. ### Claim 3 (depends on 1) The transmission apparatus according to claim 1, further comprising: an encrypter configured to encrypt the audio data transmitted by the data transmitter, wherein the predetermined information is information indicating a state of encryption of the audio data. ### Claim 4 (depends on 3) The transmission apparatus according to claim 3, wherein while a reset state in which no encryption is performed for the audio data is continued, the counter value is maintained at โ€œ0โ€, and the parity value is a preset parity value of an even-number parity or an odd-number parity. ### Claim 5 (depends on 3) The transmission apparatus according to claim 3, wherein while a state in which encryption is performed for the audio data is continued, the counter value is incremented for every predetermined number of audio data units, and the parity value is a preset parity value of an even-number parity or an odd-number parity. ### Claim 6 (depends on 3) The transmission apparatus according to claim 3, wherein while a state in which encryption is performed for the audio data is continued, the counter value is incremented for every predetermined number of audio data units and is further encrypted, and the parity value is a preset parity value of an even-number parity or an odd-number parity. ### Claim 7 (depends on 3) The transmission apparatus according to claim 3, wherein while a pause state in which no encryption is performed for the audio data is continued, the counter value is fixed to a predetermined value, and the parity value is an inverted value of a preset parity value of an even-number parity or an odd-number parity. ### Claim 8 (depends on 1) The transmission apparatus according to claim 1, wherein the information adder uses a predetermined bit region of a channel status of each block formed for every predetermined number of audio data units to add the counter value and the parity value. ### Claim 9 (depends on 8) The transmission apparatus according to claim 8, wherein the predetermined bit region is a 8-bit region, the 8-bit region including a region where a 7-bit counter value is arranged and a region where a 1-bit parity value added to a leading side of the region is arranged. ### Claim 10 A transmission method comprising: a data transmission step of sequentially transmitting, by a data transmitter, each audio data unit of audio data to a reception side via a predetermined transfer channel; and an information adding step of adding, by an information adder, a counter value and a parity value associated with the counter value to the audio data transmitted by the data transmitter for every predetermined number of audio data units, wherein predetermined information is transmitted to the reception side with the counter value and the parity value being in a predetermined state based on a preset rule. ### Claim 11 A receiving apparatus comprising: a data receiver configured to sequentially receive each audio data unit of audio data from a transmission side via a predetermined transfer channel, wherein a counter value and a parity value associated with the counter value are, for every predetermined number of audio data units, added to the audio data, the counter value and the parity value are in a predetermined state based on a preset rule, and indicate predetermined information, and a controller configured to control processing on a basis of the counter value and the parity value is further provided. ### Claim 12 (depends on 11) The receiving apparatus according to claim 11, wherein the predetermined information is information indicating that audio of the audio data needs to be muted, and the controller controls processing of muting the audio of the audio data. ### Claim 13 (depends on 11) The receiving apparatus according to claim 11, wherein the predetermined information is information indicating a state of encryption of the audio data, and the controller controls decoding processing for the audio data. ### Claim 14 (depends on 11) The receiving apparatus according to claim 11, wherein a predetermined bit region of a channel status of each block formed for every predetermined number of audio data units is used to add the counter value and the parity value to the audio data. ### Claim 15 (depends on 14) The receiving apparatus according to claim 14, wherein the predetermined bit region is a 8-bit region, the 8-bit region including a region where a 7-bit counter value is arranged and a region where a 1-bit parity value added to a leading side of the region is arranged. ### Claim 16 A receiving method comprising: a data receiving step of sequentially receiving, by a data receiver, each audio data unit of audio data from a transmission side via a predetermined transfer channel, wherein a counter value and a parity value associated with the counter value are, for every predetermined number of audio data units, added to the audio data, the counter value and the parity value are in a predetermined state based on a preset rule, and indicate predetermined information, and a control step of controlling, by a controller, processing on a basis of the counter value and the parity value is further provided. ### Claim 17 A transmission apparatus comprising: a data transmitter configured to sequentially transmit each audio data unit of audio data to a reception side via a predetermined transfer channel; and an information adder configured to add, for every predetermined number of audio data units, a counter value to the audio data transmitted by the data transmitter, wherein predetermined information is transmitted to the reception side with the counter value being in a predetermined state based on a preset rule. ### Claim 18 A receiving apparatus comprising: a data receiver configured to sequentially receive each audio data unit of audio data from a transmission side via a predetermined transfer channel, wherein a counter value is, for every predetermined number of audio data units, added to the audio data, the counter value is in a predetermined state based on a preset rule, and indicates predetermined information, and a controller configured to control processing on a basis of the counter value is further provided.