Video apparatus with video signal detection and respective method for recognizing a video signal

A video signal and video device technology, applied to color signal processing circuits, color TV components, TV system components, etc., can solve problems such as cross-color brightness and distortion

Inactive Publication Date: 2004-09-01
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since in this standard the luminance and chrominance signals are tightly stacked together, it is not possible to have a good separation of the luminance and chrominance signals in television receivers and this leads to e.g. cross-color and luminance distortions

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  • Video apparatus with video signal detection and respective method for recognizing a video signal
  • Video apparatus with video signal detection and respective method for recognizing a video signal

Examples

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Embodiment Construction

[0014] exist figure 1 1, a DVD player 1 is shown comprising a video output terminal 3 according to a known video standard such as CVBS, S-Video which provides an S-VHS signal, and a component video output terminal YPrPb which provides a component video signal. When playing a DVD, specific video outputs can be selected by the user, or the video signal can be applied to all video outputs of the DVD player. As previously described, the component video output achieves the highest picture quality.

[0015] A DVD player 1 is connected to a video device, which in this embodiment is connected to a television 2 comprising a video input 4 coupled to the output of the DVD player 1 . The television usually includes more video inputs, which are figure 1 Not shown, other video sources such as VCRs or set-top boxes may be connected to this video input.

[0016] exist figure 2 In , the TV set 2 is shown in more detail, especially the input part of the TV set 2 is shown in more detail. A...

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Abstract

A video apparatus (2) comprises an input switching matrix (6), to which a video input (4) is coupled, the video input (4) comprising a terminal (YPrPb) for a component video signal and a CVBS terminal (Video) and / or a S-VHS terminal (S-Video), a synchronization signal detector (7) and a color decoder (8) coupled to the input switching matrix (6), an output switching matrix (9) coupled to the input switching matrix (6) and to the color decoder (8), and a microcontroller (10) coupled to the input switching matrix (6) and to the synchronization signal detector (7) for controlling the input switching matrix (6). The detection of the component video signal is made automatic by means of the microcontroller (6), the synchronization signal detector (7) and the color decoder (8).

Description

technical field [0001] The present invention relates to a video device comprising a video input, an input switching matrix coupled to the video input, a sync detector coupled to the luminance output of the input switching matrix, and a color output terminal and a color decoder coupled to the luminance output terminal of the input conversion matrix. Such devices are already known from, for example, televisions or video recorders which comprise a plurality of audio / video (AV) inputs which can be coupled to other video devices such as DVD players or video recorders. Background technique [0002] For the transfer of video signals between consumer electronic video appliances, several interface standards are known. The best video quality is provided by the so-called R, G, B signals, where the three colors red, green and blue are each provided as separate signals and correspond to the colors displayed by the color picture tube. But because the video standard requires three separa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/00G09G5/00H04N5/18H04N9/64
CPCH04N9/641A01G9/021A01G9/083
Inventor 格雷厄姆·伯恩
Owner THOMSON LICENSING SA
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