Transmission apparatus, transmission method, reception apparatus, and reception method
AssigneeSony Corporation
InventorIkuo TSUKAGOSHI
Life of this patent
Estimating the term…
Abstract
Simplifying subtitle display processing in a variable speed reproduction mode on the receiving side is intended. A video stream formed with a video packet having coded image data in a payload is generated. A subtitle stream formed with a subtitle packet having subtitle information in a payload is generated. A multiplexed stream including the video stream and the subtitle stream is generated and transmitted. In generating the multiplexed stream, the subtitle packet is arranged at a random access position.
Claims13
A transmission apparatus comprising:
- a video encoding unit that generates a video stream formed with a video packet having coded image data in a payload;
- a subtitle encoding unit that generates a subtitle stream formed with a subtitle packet having subtitle information in a payload;
- a multiplexed stream generation unit that generates a multiplexed stream including the video stream and the subtitle stream;
- and
- a transmission unit that transmits the multiplexed stream,
- wherein the multiplexed stream generation unit arranges the subtitle packet at a random access position.
A transmission method comprising:
- a video encoding step of generating a video stream formed with a video packet having coded image data in a payload;
- a subtitle stream generation step of generating a subtitle stream formed with a subtitle packet having subtitle information in a payload;
- a multiplexed stream generation step of generating a multiplexed stream including the video stream and the subtitle stream;
- and
- a transmission step of transmitting the multiplexed stream by a transmission unit,
- wherein the multiplexed stream generation step arranges the subtitle packet at a random access position.
A reception apparatus comprising a reception unit that receives a multiplexed stream including a video stream formed with a video packet having coded image data in a payload and including a subtitle stream formed with a subtitle packet having subtitle information in a payload,
- the subtitle packet being arranged at a random access position in the multiplexed stream,
- the reception apparatus further comprising a processing unit that retrieves the subtitle packet from the multiplexed stream together with the video packet at the random access position and that performs subtitle display processing.
A reception method comprising a reception step of receiving, by a reception unit, a multiplexed stream including a video stream formed with a video packet having coded image data in a payload and including a subtitle stream formed with a subtitle packet having subtitle information in a payload,
- the subtitle packet being arranged at a random access position in the multiplexed stream,
- the reception method further comprising a processing step of retrieving the subtitle packet from the multiplexed stream together with the video packet at the random access position and performing subtitle display processing.
Dependencies are inferred from the claim text.