Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for synchronizing playbacks at two electronic devices

A technology for electronic equipment and users, which is applied to the components of TV systems, TVs, electrical components, etc., and can solve problems such as inability to easily playback and synchronize

Inactive Publication Date: 2016-10-26
INTERDIGITAL CE PATENT HLDG
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when two electronic devices receive video streams and audio streams separately, synchronization between individual playbacks cannot be easily achieved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for synchronizing playbacks at two electronic devices
  • Method and apparatus for synchronizing playbacks at two electronic devices
  • Method and apparatus for synchronizing playbacks at two electronic devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] Referring now to the drawings, and more specifically, to figure 1 , Shows a block diagram of a system in accordance with an embodiment of the present invention. The first stream 8 as an audio-video stream (for example an MPEG-2 transport stream) is sent by the video server 9 on the first network 5 as a broadband network, for example. The set top box (STB) 2 receives the first stream 8. The first stream 8 carries a program including the first audio and associated video, and after the STB 2 has processed the program, the television (TV) 3 plays back the program. As is well known in the art, the STB 2 synchronizes the first audio with the video by using the synchronization signal embedded in the first stream 8. Therefore, the playback of the video and the first audio at TV 3 are synchronized.

[0032] The term "synchronization" as used herein means: if the audio is ahead of the video, the time difference between audio and video does not exceed 20 milliseconds (ms), or if th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for synchronizing playback of a program including a video and associated first audio at a first electronic device with playback of a second audio associated with the program at a second electronic device that also receives the video is disclosed. The method comprises decoding, by a video decoder in the second electronic device, the video, and outputting the decoded video; decoding, by an audio decoder in the second electronic device, the second audio and outputting the decoded second audio for playing back by the second electronic device; receiving a user command to synchronize the playback of the video at the first electronic device and playback of the second audio at the second electronic device; responsive to the user command, the method further comprising capturing, by a capturing device in the second electronic device, the playback of the video at the first electronic device; determining, by the second electronic device, an offset between the outputted decoded video and the captured video; and adjusting outputting of the decoded second audio according to the offset, so that the playback of the first audio at the first electronic device is synchronized with the playback of the second audio at the second electronic device.

Description

Technical field [0001] The principle of this embodiment generally relates to a method and apparatus for synchronizing the playback of two electronic devices, and more specifically, combining the video at one of the two electronic devices and the first audio associated with the video. The playback of is synchronized with the playback of a second audio at another electronic device that is different from the first audio and is associated with the video. Background technique [0002] Multiple approaches, such as broadband television (TV) and mobile TV, now coexist to bring multimedia streams or broadcast programs to end users. In the case of broadband TV, the receiver is usually a standard TV device connected to a receiving device called a set-top box or STB. In the case of mobile TV, the receiver device is a mobile terminal (such as a mobile phone, personal digital assistant (PDA), or tablet). [0003] In an MPEG-2 stream, several components (such as audio and video) are synchronize...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04N21/414H04N21/43
CPCH04N21/41407H04N21/4223H04N21/44008H04N21/411H04N21/43079H04N21/4126H04N21/43076H04N23/00H04N21/23602H04N21/2387H04N21/44H04N21/47217
Inventor J.S.斯图尔特
Owner INTERDIGITAL CE PATENT HLDG