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System and method for smoothing channel changing in internet protocol television systems

A technology of TV system and Internet protocol, which is applied in parts of TV system, parts of color TV, TV, etc.

Active Publication Date: 2007-02-21
ALCATEL USA SOURCING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A disadvantage inherent in the aforementioned solutions is that there is a perceptible "snap" in the sharpness of the displayed video image during the transition from the accompanying video stream to the normal video stream

Method used

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  • System and method for smoothing channel changing in internet protocol television systems
  • System and method for smoothing channel changing in internet protocol television systems
  • System and method for smoothing channel changing in internet protocol television systems

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Embodiment Construction

[0016] Embodiments of the invention will now be described with reference to various examples of how the invention is best made and used. The same reference numerals are used to designate the same or corresponding parts throughout the several views of the specification and drawings, where elements are not necessarily drawn to scale.

[0017] figure 1 is a system block diagram of the IPTV network 100 according to one embodiment. Such as figure 1 As shown, a Broadcast Video Source (BVS) 102 is connected via a Gigabit Ethernet ("GigE") connection 103 to an access network including a Digital Subscriber Line Access Multiplexer ("DSLAM") 104 . The BVS 102 performs multiple description encoding; that is, it encodes the normal video stream and the corresponding accompanying video stream for each of the multiple broadcast channels available for selection by the subscriber. All video streams encoded by BVS 102 are provided to DSLAM 104 via GigE connection 103 . The role of DSLAM 104 ...

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PUM

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Abstract

System and method of implementing a channel change in an Internet Protocol Television ('IPTV') system are described. In one embodiment, method comprises steps of, responsive to a channel change request, decoding and displaying a video stream of a requested channel, wherein the displayed video stream has a resolution quality less than a normal resolution quality; increasing the resolution quality of the displayed video stream by an incremental amount R ; and subsequent to the increasing, determining whether the resolution quality of the displayed video stream is equal to the normal resolution quality and, responsive to a negative determination, repeating the increasing and determining.

Description

[0001] Cross References to Related Applications [0002] The subject matter disclosed in this application is related to that disclosed in the following commonly owned, co-pending patent applications: (i) Application No. 11 / 204,441, filed August 16, 2005, in the name of Frederick H. Skoog, Attorney "SYSTEMANDMETHOD FOR IMPLEMENTING CHANNEL CHANGE OPERATIONSIN INTERNET PROTOCOL TELEVISION SYSTEMS," Archive No. 1285-0168US, the contents of which are hereby incorporated by reference. technical field [0003] The present invention relates generally to Internet Protocol Television ("IPTV") systems. More particularly, and without limitation, the present invention is directed to a system and method for smoothing transitions of video displays that occur in response to channel changes in such systems. Background technique [0004] IPTV has become a common denominator of systems for distributing television and / or video signals to subscribers based on Internet Protocol using broadband ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/173H04N5/00H04L29/00H04N5/44
CPCH04N21/4622H04N21/4402H04N5/4401H04N21/4384H04N21/6405H04N21/6125H04N21/4383H04N21/44016H04N21/23424H04N21/426
Inventor 唐纳德·P·兹里尼弗雷德里克·斯库格莫里斯·尼尔·兰塞姆
Owner ALCATEL USA SOURCING