# US 2014/0157311 A1 · Faster Access to Television Channels

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- Number: US 2014/0157311 A1
- Document ID: US20140157311A1
- Status: Published application
- Kind: A1
- Application number: 14/176,255
- Filed: 2014-02-10
- Published: 2014-06-05
- Earliest claimed: 2008-11-25
- Assignees: Cisco Technology, Inc.
- Inventors: Arturo A. Rodriguez; Thomas Kernen; Jeffrey Hopper
- Web page: https://patentgrep.com/patent/US20140157311A1

## CPC

- H04N 5/50: Tuning indicators; Automatic tuning control
- H04N 21/2343: involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements {(video transcoding H04N19/40; media packet handling at the source H04L65/762)}
- H04N 21/4384: {involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency}
- H04N 21/44004: {involving video buffer management, e.g. video decoder buffer or video display buffer}
- H04N 21/44016: {involving splicing one content stream with another content stream, e.g. for substituting a video clip}
- H04N 21/6371: directed to network
- H04N 21/64784: {Data processing by the network (data processing in packet switching systems H04L12/56; flow control in packet networks H04L47/10; intermediate storage or scheduling H04L49/90; provisioning of proxy services in data packet switching networks H04L67/56)}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

In one embodiment, a receiver for an accelerated channel change is provided. The receiver receives a first version of a video stream for a first channel and causes display of video for the first version of the video stream for the channel. A second version of a video stream is received upon a channel change to a second channel, the second version including non-discardable pictures from the first version of the video stream. The receiver displays video for the second version of the video stream for the second channel. When a transition point is reached in the first version of the video stream for the second channel, a first version of a video stream for the second channel can be displayed.

## Claims

### Claim 1

A method comprising:
receiving a first version of a video stream for a first channel;
causing display of video for the first version of the video stream for the channel;
receiving a second version of a video stream upon a channel change to a second channel, the second version including non-discardable pictures from the first version of the video stream;
displaying video for the second version of the video stream for the second channel;
receiving a first version of a video stream for the second channel when a transition point is reached in the first version of the video stream for the second channel such that the first version can be displayed; and
causing display of video for the first version of the video stream for the second channel.