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Reverse trick modes on progressive video using special groups of pictures

A technique of trick mode and group of pictures, applied in the field of video systems, can solve the problem that the remote decoder system is not particularly suitable for performing reverse trick mode and the like

Inactive Publication Date: 2006-06-07
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, remote decoder systems are not particularly well suited to perform reverse trick modes
The reason for this shortcoming is that the microprocessor in the digital video recorder or player cannot instruct the decoder to display the images in reverse order
Thus, the reverse trick mode in this arrangement is typically limited to sending only the I pictures in all or some GOPs of the video signal to the decoder in reverse order

Method used

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  • Reverse trick modes on progressive video using special groups of pictures
  • Reverse trick modes on progressive video using special groups of pictures
  • Reverse trick modes on progressive video using special groups of pictures

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Embodiment Construction

[0025] Figure 1A Shown in block diagram form is a system 100 configured in accordance with the present invention to implement various high-level operational features. However, the present invention is not limited to Figure 1A The particular system shown, as the invention may be implemented using any other system capable of receiving a video signal, processing the signal and outputting the signal to any suitable component, such as a display device. Additionally, system 100 is not limited to reading data from, or writing data to, any particular type of storage medium, as any storage medium capable of storing digitally encoded data may be used with system 100 .

[0026] System 100 may include: an encoder 110 for encoding an incoming video signal; and a microprocessor 112 for instructing encoder 110 to encode the video signal according to various techniques, some of which will be described later. some explanations. All or part of encoder 110 and microprocessor 112 may be consid...

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Abstract

The invention relates to a method (200) and system (100) for encoding a video signal. The method includes the steps of receiving (212) a progressive video signal and encoding (214) the progressive video signal into at least one group of pictures having at least one prediction source picture and at least one non-prediction source picture. All non-prediction source pictures are predicted from a prediction source picture such that no non-prediction source picture is predicted from another non-prediction source picture. The method also includes the step of changing (218) the display order of the groups of pictures in response to the reverse trick mode command to allow the groups of pictures to be displayed in reverse order. Additionally, the method may include the step of altering (220) at least the number of non-predicted source pictures in the group of pictures in response to the reverse trick mode command.

Description

technical field [0001] The arrangement of the present invention relates generally to video systems, and more particularly to video systems for recording or replaying digitally encoded video sequences. Background technique [0002] Devices that facilitate video playback are gaining popularity in today's consumer electronics market. For example, many consumers have purchased digital video disk (DVD) recorders or players to watch pre-recorded programs or to record their favorite programs. Typically, a DVD recorder or player contains a Moving Picture Experts Group (MPEG) decoder for decoding digitally encoded multimedia data stored on a disc played by the recorder or player. An MPEG video signal to be decoded consists of groups of pictures (GOPs), each of which typically contains an intra (I) picture, a number of predictive (P) pictures, and a number of bidirectional predictive (B) pictures. [0003] If a digital video recorder or player is connected to some televisions, the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/783H04N5/85H04N7/26H04N7/50H04N9/804
CPCH04N5/775H04N5/783H04N5/85H04N9/8042H04N19/61H04N19/114H04N5/93
Inventor 林舒唐纳德·亨利·威利斯
Owner THOMSON LICENSING SA