Video data decoder and method for decoding video data
US8750389B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2008 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Mar 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A decoder includes a storage space that records video data and subtitle data in multiplexed form; a first buffer memory operating in “First In First Out” mode and able to temporarily contain the video data in packet form; a second buffer memory operating in “First In First Out” mode and able to temporarily contain the subtitle data in packet form; a demultiplexer configured to transmit the video data and subtitle data respectively to the first and second buffer memories; and a local clock, wherein the storage space includes a storage space configured to store the time references such that the demultiplexer transmits the time references, the decoder including a generator to generate a presentation time stamp associated with each subtitle data packet not initially containing a presentation time stamp, the presentation time stamp being determined from a time reference value transmitted by the demultiplexer and enabling the presentation of the subtitle data packets to be synchronized with relation to the local clock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.