Device and method for synchronizing different parts of a digital service

Patent metadata

Field	Value
Publication number	US-9826126-B2
Application number	US-201615353711-A
Country	US
Kind code	B2
Filing date	Nov 16, 2016
Priority date	Nov 16, 2004
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

The invention relates to a reproduction device ( 21 ), with a device ( 20 ) acting as a source of digital services. It also relates to a method of synchronizing two parts of a digital service in a system including a source device according to the invention and at least one reproduction device according to the invention.
According to the invention, the reproduction device ( 21 ) includes means for receiving the data forming at least a part of a digital service originating from a digital service source device ( 20 ), means for processing ( 210 ) at least some of the data received, means ( 211 ) for reproducing an output of at least a part of the digital service, the time for processing and reproducing the data introducing a delay in the output of the reproduced data. This device also includes communication means ( 213 ) for informing the source device of the delay introduced.

First claim

The invention claimed is:

1. Device for reproducing at least one part of data corresponding to at least one digital service originating from a digital service source device comprising a receiver for receiving first data forming a first part of the digital service and second data forming a second part of the digital service, a first processing unit for processing said first received data, a first reproduction unit for reproducing an output of said first processed data, the time for processing and/or reproducing the first received data introducing a first delay-in the output of the first reproduced data, wherein said reproduction device further comprises a second processing unit for processing said second received data, a second reproduction unit for reproducing an output of said second processed data, the time for processing and/or reproducing the second data introducing a second delay in the output of the second reproduced data and wherein the device also comprises a communication unit for informing the digital service source device of said first delay according to the format of said first data or of said second delay according to the format of said second data.

2. Device according to claim 1 , wherein said first data are video data and said second data are audio data.

3. Method for reproducing at least one part of data corresponding to at least one digital service originating from a digital service source device comprising:
receiving first data forming a first part of a digital service;
processing said first received data;
reproducing an output of said first processed data, the time for processing and/or reproducing the first received data introducing a first delay in the output of the first reproduced data,
receiving second data forming a second part of the digital service;
processing said second received data;
reproducing an output of said second processed data, the time for processing and/or reproducing the second received data introducing a second delay in the output of the second reproduced data,
informing the digital service source device of said first delay according to the format of said first data or of said second delay according to the format of said second data.

4. Method according to claim 3 , wherein said first data are video data and said second data are audio data.

5. Device acting as a digital service source, comprising a unit for outputting first data forming a first part of a digital service, a unit for outputting second data forming a second part of the digital service, wherein it also comprises a unit for recovering, according to the format of the first data, a first delay indication relating to a delay introduced when processing and/or reproducing said first data or for recovering, according to the format of the second data, a second delay indication relating to a delay introduced when processing and/or reproducing said second data, a delay unit for applying a programmable delay to the output data forming the second part of the digital service according to said first and second delay indications recovered.

6. Device according to claim 5 , wherein said first data are video data and said second data are audio data.

7. Method for transmitting data corresponding to at least one digital service, comprising:
outputting first data forming a first part of the digital service;
outputting second data forming a second part of the digital service;
recovering, according to the format of the first data, a first delay indication relating to a delay introduced when processing and/or reproducing said first data or recovering, according to the format of the second data, a second delay indication relating to a delay introduced when processing and/or reproducing said second data; and
applying a programmable delay to the output data forming the second part of the digital service according to said first and second delay indications recovered.

8. Method according to claim 7 , wherein said first data are video data and said second data are audio data.

Assignees

• Thomson Licensing

Inventors

• Leyendecker Philippe
• Zwing Rainer
• Abelard Franck
• Morvan Patrick
• Desert Sebastien
• Doyen Didier

Classifications

• H04N21/6336

  directed to decoder · CPC title

• H04N5/04 Primary

  Synchronising (for television systems using pulse code modulation H04N7/56) · CPC title

• H04N21/2353

  specifically adapted to content descriptors, e.g. coding, compressing or processing of metadata · CPC title

• H04N21/4307

  Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen · CPC title

• H04N21/435

  Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream · CPC title