Sony patents TV signal method that syncs video timing with data packets
Sony describes a system for sending video and audio data where timing instructions are packed into separate control packets alongside the media files. The receiver uses these specific timing markers to know exactly when to decode and display each frame, ensuring smooth playback over the transmission channel.
In the filing’s own words
A transmission apparatus including: a transport stream generation unit configured to generate a transport stream in which a first transport packet containing transport media in a payload and a second transport packet containing information about the transport media in a payload, are time-division multiplexed; a transport stream transmission unit configured to transmit the transport stream to a receiver through a predetermined transmission channel; and a time information insertion unit configured to insert time information for allowing the receiver to obtain decoding time and/or presentation time into the first transport packet or the second transport packet.
What exactly they claim (claim 1)
1. A reception apparatus, comprising: first reception circuitry configured to receive first clock information, the first clock information being information for obtaining at least one of a decoding time and a presentation time, said at least one of the decoding time and the presentation time corresponding to the first reception circuitry; second reception circuitry configured to receive a transport stream via an RF transmission path, the transport stream comprising a first transport packet including media data and a second transport packet including control information, each of the first transport packet and the second transport packet comprising a first header portion and a first payload portion, wherein the first payload portion of each of the first transport packet and the second transport packet comprises a second header portion and a second payload portion, the second header portion of each of the first payload portion of the first transport packet and the second transport packet includes a fragmentation indicator, the fragmentation indicator being configured to indicate whether (i) the second payload portion corresponding to the respective second header portion includes a non-fragmented data or (ii) the second payload portion corresponding to the respective second header portion includes a fragmented data, and a value of a presentation time of the media data included in the first transport packet is included in the control information included in the second transport packet; and processing circuitry configured to: set a clock based on the first clock information; and process the media data extracted from the transport stream based on the value of the presentation time, wherein the second header portion of the first payload portion of the first transport packet further includes a type information field, the type information field is configured to indicate the second payload portion corresponding to the second header portion corresponds to the media data, the processing circuitry is further configured to process the transport stream based on the fragmentation indicator and the type information field, the value of the presentation time is inserted into the second payload portion of the second transport packet.
Facts
- Company
- Sony (SONY GROUP CORPORATION)
- Official title
- Transmission apparatus, transmission method, reception apparatus, and reception method
- Patent number
- US12750174B2
- Application number
- 17383223
- Filed
- Jul 22, 2021
- Granted
- Sep 29, 2026
- Inventors
- 1
- Claims
- 16
Classified under
H04L 5/0044 Electricity & electronicsH04H 60/40 Electricity & electronicsH04L 5/22 Electricity & electronicsH04L 65/70 Electricity & electronicsH04N 21/2362 Electricity & electronicsH04N 21/2365 Electricity & electronicsMore from Sony in Networks & wireless
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.