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US-9762866-B2 · Sep 12, 2017 · US
Video transfer system
US8953681B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8953681-B2 |
| Application number | US-201113703108-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 20, 2011 |
| Priority date | Jun 10, 2010 |
| Publication date | Feb 10, 2015 |
| Grant date | Feb 10, 2015 |
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- Title
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Abstract
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A synchronization signal generator of a decoder adds a predetermined value to a time value, and outputs a synchronization signal when the added time value coincides with a reproducing time value in a frame.
First claim
Opening claim text (preview).
The invention claimed is: 1. A video transfer system comprising: a time value generator that outputs a time value; a plurality of display object video picture encoders each of which encodes a frame of a display object video picture, and assigns to the frame a reproducing time value coinciding with a time value at the time of encoding; a reference video picture encoder that encodes a frame of a reference video picture, and assigns to the frame a reproducing time value coinciding with a time value at the time of encoding; a multiplexer that multiplexes the encoded frames of the display object video pictures and the reference video picture to generate a multiplexed stream; a plurality of display object video picture decoders each of which extracts the frame of the display object video picture from the multiplexed stream, and decodes the frame; and a synchronization signal generating device that extracts the reference video picture from the multiplexed stream, and generates a synchronization signal using the reference video picture, wherein each display object video picture decoder includes: a time value generator that outputs a time value; a decoding unit that decodes the extracted frame of the display object video picture, and outputs the decoded frame when the time value coincides with the reproducing time value in the extracted frame; and an output unit that outputs the decoded frame outside when the synchronization signal is output from the synchronization signal generating device, and the synchronization signal generating device includes: a time value generator that outputs a time value; and a synchronization signal generator that adds a predetermined value to the time value, and outputs a synchronization signal to the each display object video picture decoder when the added time value coincides with the reproducing time value in the extracted frame of the reference video picture. 2. The video transfer system according to claim 1 , wherein one of the display object video pictures doubles as the reference video picture, one of the display object video picture encoders doubles as the reference video picture encoder, and one of the display object video picture decoders doubles as the synchronization signal generating device.
Assignees
Inventors
Classifications
- H04N7/32Primary
Electricity · mapped topic
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
- H04N21/43072Primary
of multiple content streams on the same device · CPC title
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Frequently asked questions
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- What does patent US8953681B2 cover?
- A synchronization signal generator of a decoder adds a predetermined value to a time value, and outputs a synchronization signal when the added time value coincides with a reproducing time value in a frame.
- Who is the assignee on this patent?
- Izumi Kazutaka, Sone Eiko, Ito Yu, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification H04N7/32. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Feb 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).