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Method and device for reducing and enlarging sub-picture video signals, and television with same

A video signal and sprite technology, applied in the field of signal processing, can solve the problems of increased design cost, complex zoom circuit design, large circuit space resources, etc., and achieve the effect of fewer clocks

Active Publication Date: 2010-02-03
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there are more zoom clock domains between the video signal of the sub-picture and the video signal of the main picture, which makes the design of the zoom circuit complex, takes up a lot of circuit space resources, and increases the design cost.

Method used

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  • Method and device for reducing and enlarging sub-picture video signals, and television with same
  • Method and device for reducing and enlarging sub-picture video signals, and television with same
  • Method and device for reducing and enlarging sub-picture video signals, and television with same

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Embodiment Construction

[0049] A method and device for zooming sub-picture video signals provided by the embodiments of the present invention and a television having the same will be described in detail below with reference to the accompanying drawings.

[0050] Such as figure 1 As shown, it is a scaling method of a sub-picture video signal provided by an embodiment of the present invention; the method includes:

[0051] 101: Receive a sub-picture video signal, and perform shift-registration; this step is to perform shift-registration according to a scaling algorithm. If the scaling algorithm adopts a bilinear algorithm, the shift register needs to delay the currently received sub-picture video signal. Specifically, suppose the time of receiving the sub-picture video signal is T0, T1, T2; when T0 receives the sub-picture video signal and performs delay processing, that is, the sub-picture video signal received by T0 is shifted and registered, and the T1 time The received sub-picture video signal is...

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Abstract

The embodiment of the invention discloses a method and a device for reducing and enlarging sub-picture video signals and a television with the same and relates to the technical field of signal processing. The invention solves the problem existing in the prior art that reducing and enlarging clock fields of sub-picture video signals and main picture video signals are excessive, thereby causing thecomplicated design of reducing and enlarging circuits, occupying larger circuit spatial resources and increasing the design cost. The method for reducing and enlarging sub-picture video signals, whichis provided by the embodiment, comprises the following steps: receiving sub-picture video signals; shifting; registering; obtaining reducing and enlarging parameters and output control signals; reducing and enlarging the sub-picture video signals according to the reducing and enlarging parameters; and outputting the reduced and enlarged sub-picture video signals according to the output control signals.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a method and device for zooming sub-picture video signals and a television with the device. Background technique [0002] At present, the channel program displayed on the entire TV screen is the main picture, and at the same time, there can be one or more small windows on it to display the programs of other channels as sub-pictures, and the output sound is still only the sound of the main picture. In this way, the main sub-picture that can display programs of multiple channels on one display screen is called PIP (PICTURE IN PICTURE, picture-in-picture). Thus, another POP (POCTURE ON PICTURE, picture outside picture) has been developed from the concept of PIP. The sub-picture displayed in picture-outside-picture is a case of displaying something other than the main picture, that is, the sub-picture display does not cover the main picture. For example: the sub-picture c...

Claims

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Application Information

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IPC IPC(8): H04N5/45H04N5/44
Inventor 何云鹏刘宇轩江显舟邱敏
Owner HISENSE VISUAL TECH CO LTD