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Video processing apparatus and method

A technology of video processing and equipment, applied in the direction of color signal processing circuit, color TV, parts of color TV, etc.

Inactive Publication Date: 2009-02-18
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Then, for example, it is possible to change the video to be displayed on the TV

Method used

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  • Video processing apparatus and method
  • Video processing apparatus and method
  • Video processing apparatus and method

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Embodiment Construction

[0017] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. FIG. 1 is a schematic block diagram of a television receiver 11 as an embodiment of the present invention, showing its video signal processing system. The digital television broadcast signal received through the antenna 12 for receiving the digital television broadcast signal is supplied to the tuner and demodulation section 14 through the input terminal 13 .

[0018] The tuner and demodulation section 14 selects a broadcast signal of a desired channel from the input digital television broadcast signal, modulates the selected signal, and outputs the signal to the decoder 15 . Then, the decoder 15 performs decoding processing on the input signal from the tuning and demodulation section 14 to generate a color signal Cb / Cr and a luminance signal Y as digital signals, and outputs the generated signal to the selector 16 .

[0019] The analog telev...

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Abstract

According to one embodiment, a hue signal (D) and an actually measured saturation value (B) are generated based on received first and second color signals (Cb, Cr) and a saturation maximum value (A) is generated based on the hue signal (D) and received luminance signal (Y). The first and second color signals (Cb, Cr) are subjected to a correction process when the actually measured saturation value (B) exceeds the saturation maximum value (A) and the luminance signal (Y) and the first and second color signals (Cb, Cr) that are subjected to the correction process are converted into R, G and B signals.

Description

technical field [0001] The present invention relates to a video processing apparatus and a video processing method for performing color conversion processing on a video signal required for an output device without changing the color tone. Background technique [0002] As a result of the development of digital video technology in recent years, the range of video signals that can be displayed on a display screen has been expanding and is still expanding. Therefore, a given video signal is often subjected to conversion processing before the given video signal is displayed on a display screen. [0003] Japanese Patent Application Laid-Open No. 2007-074063 discloses a technique of computationally determining the saturation and hue of each pixel of an input image, and then determining the saturation distribution of the image and the maximum or most common value of the saturation , and also determine the correction value used to make corrections to improve saturation in low satura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/64H04N9/68
CPCH04N9/68H04N9/643
Inventor 宫沢弘俊
Owner KK TOSHIBA