# US 2018/0324499 A1 · Data processing apparatus and data processing method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324499 A1 - Document ID: US20180324499A1 - Status: Published application - Kind: A1 - Application number: 15/773,809 - Filed: 2017-01-13 - Published: 2018-11-08 - Earliest claimed: 2016-01-27 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: Tatsuki AMIMOTO; Lachlan Bruce MICHAEL - Web page: https://patentgrep.com/patent/US20180324499A1 ## CPC - H04N 21/6112: {involving terrestrial transmission, e.g. DVB-T} - H04H 20/95: characterised by a specific format, e.g. an encoded audio stream - H04J 3/00: Time-division multiplex systems (H04J14/00 takes precedence; relay systems H04B7/14; selecting techniques H04Q) - H04N 21/2343: involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements {(video transcoding H04N19/40; media packet handling at the source H04L65/762)} - H04N 21/236: Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream {(multiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00)} - H04N 21/2362: Generation or processing of Service Information [SI] - H04N 21/2383: Channel coding {or modulation} of digital bit-stream, e.g. QPSK modulation (arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002) - H04N 21/434: Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream {(demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00)} - H04N 21/61: Network physical structure; Signal processing (H04B takes precedence) - H04N 21/615: {Signal processing at physical level (signal processing in analog two-way television systems H04N7/173)} - H04N 21/6162: {involving terrestrial transmission, e.g. DVB-T} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - H04H: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N) - H04J: MULTIPLEX COMMUNICATION (transmission in general H04B; peculiar to transmission of digital information H04L5/00; systems for the simultaneous or sequential transmission of more than one television signal H04N7/08; in exchanges H04Q11/00; stereophonic systems H04S) ## Abstract The present technique relates to a data processing apparatus and a data processing method each of which enables a burden imposed on processing on a reception side to be reduced. A data processing apparatus produces signaling containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in a physical layer frame, and processes the signaling so as for the signaling to be contained in a preamble of the physical layer frame, thereby enabling a burden imposed on processing on a reception side to be reduced. The present technique, for example, can be applied to data transmission complying with the broadcasting standards such as ATSC3.0. ## Claims ### Claim 1 A data processing apparatus, comprising: a production portion configured to produce signaling containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in a physical layer frame; and a processing portion configured to process the signaling so as for the signaling to be included in a preamble of the physical layer frame. ### Claim 2 (depends on 1) The data processing apparatus according to claim 1, wherein the Null cell number is the number of cells obtained by subtracting an active data cell number exhibiting the number of cells of valid data in the sub-frame from a total data cell number exhibiting the number of all cells in the sub-frame. ### Claim 3 (depends on 2) The data processing apparatus according to claim 2, wherein the signaling contains first control information, and second control information read out after the first control information, and the Null cell number is contained either in the first control information or in the second control information. ### Claim 4 (depends on 3) The data processing apparatus according to claim 3, wherein one or more sub-frames are included in the physical layer frame, the Null cell number of a first sub-frame is contained in the first control information, and the Null cell number of remaining sub-frames other than the first sub-frame is contained in the second control information. ### Claim 5 (depends on 4) The data processing apparatus according to claim 4, wherein the first control information is smaller in data size than the second control information, and is transmitted in robuster style than the second control information. ### Claim 6 (depends on 2) The data processing apparatus according to claim 2, wherein the production portion produces signaling containing a number of ½ of the active data cell number or the Null cell number instead of the Null cell number. ### Claim 7 (depends on 3) The data processing apparatus according to claim 3, wherein the physical layer frame is a physical layer frame prescribed in Advanced Television Systems Committee (ATSC) 3.0, the first control information is L1-basic information (L1-Basic) prescribed in ATSC3.0, the second control information is L1-detailed information (L1-Detail) prescribed in ATSC3.0, and a sub-frame Boundary Symbol (SBS) as a symbol of a boundary of the sub-frame is contained in the sub-frame. ### Claim 8 A data processing method for a data processing apparatus, comprising the steps of: producing signaling containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in a physical layer frame by the data processing apparatus; and processing the signaling so as for the signaling to be contained in a preamble of the physical layer frame by the data processing apparatus. ### Claim 9 A data processing apparatus, comprising: a processing portion configured to process signaling contained in a preamble of a physical layer frame, and containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in the physical layer frame. ### Claim 10 (depends on 9) The data processing apparatus according to claim 9, wherein the processing portion decodes data, of series of a physical layer, contained in a received signal transmitted through a transmission path, and deciphers the Null cell number contained in the signaling. ### Claim 11 (depends on 10) The data processing apparatus according to claim 10, further comprising a frequency deinterleaving portion configured to carry out deinterleave in a frequency direction for valid data in response to the Null cell number deciphered by the processing portion. ### Claim 12 (depends on 9) The data processing apparatus according to claim 9, wherein the Null cell number is the number of cells obtained by subtracting an active data cell number exhibiting the number of cells of valid data of the sub-frame from a total data cell number exhibiting the number of all cells of the sub-frame. ### Claim 13 (depends on 12) The data processing apparatus according to claim 12, wherein the signaling contains first control information, and second control information read out after the first control information, and the Null cell number is contained either in the first control information or in the second control information. ### Claim 14 (depends on 13) The data processing apparatus according to claim 13, wherein one or more sub-frames are included in the physical layer frame, the Null cell number of a first sub-frame is contained in the first control information, and the Null cell number of remaining sub-frames other than the first sub-frame is contained in the second control information. ### Claim 15 (depends on 14) The data processing apparatus according to claim 14, wherein the first control information is smaller in data size than the second control information, and is transmitted in robuster style than the second control information. ### Claim 16 (depends on 12) The data processing apparatus according to claim 12, wherein the signaling contains a number of ½ of the active data cell number or the Null cell number instead of the Null cell number, and the processing portion processes the signaling containing the active data cell number or a number of ½ of the Null cell number. ### Claim 17 (depends on 13) The data processing apparatus according to claim 13, wherein the physical layer frame is a physical layer frame prescribed in ATSC3.0, the first control information is L1-basic information (L1-Basic) prescribed in ATSC3.0, the second control information is L1-detailed information (L1-Detail) prescribed in ATSC3.0, and a Sub-frame Boundary Symbol (SBS) as a symbol of a boundary of the sub-frame is contained in the sub-frame. ### Claim 18 A data processing method for a data processing apparatus, comprising the step of: processing signaling contained in a preamble of a physical layer frame and containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in the physical layer frame by the data processing apparatus.