# US 11,451,315 B2 · Transmission device, transmission method, reception device, and reception method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,451,315 B2 - Document ID: US11451315B2 - Status: Granted - Kind: B2 - Application number: 16/600,669 - Filed: 2019-10-14 - Published: 2020-02-06 - Granted: 2022-09-20 - Earliest claimed: 2015-03-04 - Assignees: Saturn Licenssing LLC - Applicants: Saturn Licensing LLC - Inventors: Lachlan Bruce Michael; Kazuyuki Takahashi; Satoshi Okada - Web page: https://patentgrep.com/patent/US11451315B2 ## CPC - H04J 3/0667: {Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays (arrangements for monitoring round trip delays in packet switching networks H04L43/0864)} - H04H 20/18: Arrangements for synchronising broadcast or distribution via plural systems - H04L 65/611: for multicast or broadcast (systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06) - H04L 65/65: Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP] - H04L 65/70: Media network packetisation - H04H 60/40: for identifying broadcast time - H04J 3/0664: {unidirectional timestamps} - H04L 69/22: Parsing or analysis of headers - H04L 69/28: Timers or timing mechanisms used in protocols - 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) - H04H: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract The present technology relates to a transmission device, a transmission method, a reception device, and a reception method that permit efficient transfer of time and other information. The transmission device generates a physical layer frame having preambles and a payload that includes, in the preamble, time information representing time of a given position in a stream of physical layer frames and transmits the physical layer frame. The reception device receives the physical layer frame and performs processes using time information. The present technology is applicable, for example, to IP packet broadcasting. ## Claims ### Claim 1 A transmission device comprising: circuitry configured to: generate a BaseBand packet that includes a BaseBand header and a payload, wherein: the BaseBand header contains a first field, the first field including 1-bit mode information indicating whether the BaseBand header includes one byte or two bytes, in a case where the BaseBand header includes two bytes, the BaseBand header includes flag information indicating whether the BaseBand header is extended with an optional field and whether the BaseBand header is extended with an extension field, and in a case where the BaseBand header is extended, the optional field includes extension type information indicating that the extension field includes a counter of BaseBand packets; and transmit the BaseBand packet. ### Claim 2 A transmission method comprising: generating a BaseBand packet that includes a BaseBand header and a payload, wherein: the BaseBand header contains a first field, the first field including 1-bit mode information indicating whether the BaseBand header includes one byte or two bytes, in a case where the BaseBand header includes two bytes, the BaseBand header includes flag information indicating whether the BaseBand header is extended with an optional field and whether the BaseBand header is extended with an extension field, and in a case where the BaseBand header is extended, the optional field includes extension type information indicating that the extension field includes a counter of BaseBand packets; and transmitting the BaseBand packet. ### Claim 3 (depends on 2) The transmission method as claimed in claim 2, wherein, if the flag information is set to “00,” the BaseBand header is not extended. ### Claim 4 (depends on 2) The transmission method as claimed in claim 2, wherein, if the flag information is set to “01,” the BaseBand header includes one byte in the optional field. ### Claim 5 (depends on 2) The transmission method as claimed in claim 2, wherein, if the flag information is set to “10,” the BaseBand header includes two bytes in the optional field. ### Claim 6 (depends on 2) The transmission method as claimed in claim 2, wherein the flag information is represented by two bits. ### Claim 7 A reception device comprising: circuitry configured to: receive a BaseBand packet that includes a BaseBand header and a payload, the BaseBand header containing a first field, the first field including 1-bit mode information indicating whether the BaseBand header includes one byte or two bytes; and perform processes using the 1-bit mode information, wherein: in a case where the BaseBand header includes two bytes, the BaseBand header includes flag information indicating whether the BaseBand header is extended with an optional field and whether the BaseBand header is extended with an extension field, and in a case where the BaseBand header is extended, the optional field includes extension type information indicating that the extension field includes a counter of BaseBand packets. ### Claim 8 (depends on 7) The reception device as claimed in claim 7, wherein, if the flag information is set to “00,” the BaseBand header is not extended. ### Claim 9 (depends on 7) The reception device as claimed in claim 7, wherein, if the flag information is set to “01,” the BaseBand header includes one byte in in the optional field. ### Claim 10 (depends on 7) The reception device as claimed in claim 7, wherein, if the flag information is set to “10,” the BaseBand header includes two bytes in the optional field. ### Claim 11 (depends on 7) The reception device as claimed in claim 7, wherein the flag information is represented by two bits. ### Claim 12 (depends on 7) The reception device as claimed in claim 7, wherein, in the case where the BaseBand header is extended, the optional field includes an extension length. ### Claim 13 (depends on 7) The reception device as claimed in claim 7, further comprising: a tuner; a display; and a speaker, wherein the tuner is configured to receive a physical layer frame including the BaseBand packet, the physical layer frame including image data and sound data, and the reception device is configured to decode the image data into images and sound data into sounds and to supply the images to the display and the sounds to the speaker. ### Claim 14 A reception method comprising: receiving a BaseBand packet that includes a BaseBand header and a payload, the BaseBand header containing a first field, the first field including 1-bit mode information indicating whether the BaseBand header includes one byte or two bytes; and performing processes using the 1-bit mode information, wherein: in a case where the BaseBand header includes two bytes, the BaseBand header includes flag information indicating whether the BaseBand header is extended with an optional field and whether the BaseBand header is extended with an extension field, and in a case where the BaseBand header is extended, the optional field includes extension type information indicating that the extension field includes a counter of BaseBand packets. ### Claim 15 (depends on 14) The reception method as claimed in claim 14, wherein, if the flag information is set to “00,” the BaseBand header is not extended. ### Claim 16 (depends on 14) The reception method as claimed in claim 14, wherein, if the flag information is set to “01,” the BaseBand header includes one byte in the optional field. ### Claim 17 (depends on 14) The reception method as claimed in claim 14, wherein, if the flag information is set to “10,” the BaseBand header includes two bytes in the optional field. ### Claim 18 (depends on 14) The reception method as claimed in claim 14, wherein the flag information is represented by two bits. ### Claim 19 (depends on 14) The reception method as claimed in claim 14, wherein, in the case where the BaseBand header is extended, the optional field includes an extension length. ### Claim 20 (depends on 14) The reception method as claimed in claim 14, further comprising: receiving a physical layer frame including the BaseBand packet, the physical layer frame including image data and sound data; decoding the image data into images and sound data into sounds; and supplying the images to the display and the sounds to the speaker.