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Content MPEG encoder switch

IP.com Disclosure Number: IPCOM000028734D
Publication Date: 2004-May-28
Document File: 1 page(s) / 143K

Publishing Venue

The IP.com Prior Art Database

Abstract

ID698724

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ID698724

Content MPEG encoder switch

In the TV-system we see that certain functionality goes into a gateway, or sometimes called an I-node (intelligent node), and that the TV will have the basic display functionality. These two devices may be connected via a wireless link, like 802.11a/b/g or other interface. See the figure below.

LCD TV

 LCD interface

Wireless receiver

CPU

MPEG decoder

y

r

o

m

e

M

receiver

Wireless link

Wireless gateway

Streamtransmitter

selector

MPEG encoder

controller

TUNER

Figure: conceptual system diagram

    A problem of this system is that in the case a user connects a game console to the gateway, the MPEG encoder will cause a certain amount of latency, as it will do for instance IPB coding, which is dependent of the GOP structure.

    The solution is to first analyze the input video by a content analyzer. In case this analyzer indicates that it is a game, a control signal will be furnished to the MPEG encoder. This MPEG encoder will change is scheme of MPEG encoding, and will directly go to I-frame only encoding. This will decrease the latency of the system to a maximum of 1 frame/field period, which is lower than 20 ms, which is acceptable for games. In addition this control signal can be forwarded to the display, such that other latency-adding signal processing will be switched off. In addition this signal can be forwarded to the display, such that other latency- adding signal processing will be switched off. Note that it is possible to overrule...