 Fax processor |
| Accordingly, it is the general purpose and object of the present invention to provide an autonomous ... |
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| Copying machine |
| OF THE INVENTION The copying machine body has a housing 8 in which a reading section A for reading ... |
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| Color television receiver AFPC circuit |
| Accordingly, it is an object of the present invention to provide a novel color television receiver ... |
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| Synchronizing circuit for a television receiver |
| What is claimed is: 1. A synchronizing circuit for a television receiver comprising: a ... |
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| Video signal encoding method |
| It is therefore an object of the present invention to provide a signal encoding method, a signal ... |
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| Texture mapping apparatus |
| It is an object of the present invention to provide a texture mapping apparatus capable of ... |
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| Single-unit video camera-recorder with automatic control of power supply to light receiver |
| Accordingly, it is an object of the present invention to provide an arrangement for a VTR, without ... |
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| Arrangement for two-dimensional DPCM coding |
| It is therefore an object of the present invention to provide an arrangement for DPCM coding/... |
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| Piecewise recursive vertical filter for PIP feature |
| I claim: 1. In television filter apparatus receiving sequential pixel value signals during ... |
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| Television display system with increased field frequency |
| We claim: 1. A television receiver cmprising: scan converter means including field-memory means ... |
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Video signal processing apparatus
| Details |
Inventors: Mishima, Hidetoshi;
Assignee: Mitsubishi Denki Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Shepperd; John W.
Assistant Examiner:
Attorney, Agent or Firm:
A video signal processing device comprises a synthesizing circuit for synthesizing three signals delayed a unitary time with respect to each other, a detecting circuit for detecting correlations of these three signals, and an output circuit for selecting and outputting, on the basis of a result of detection of the correlations, two signals each indicative of an average value of the signals neighboring in terms of time and a signal which may exist intermediate the length of time. The correlation detecting circuit is operable to detect two of the three signals delayed a predetermined time T from each other, which have a closer correlation with each other. The output signal selecting circuit is operable in response to the result of detection performed by the correlation detecting circuit to output the signal indicative of the average value of these two signals having the closer correlation with each other, or the signal existing at the center of the length of time between these two signals. |
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DETAILED DESCRIPTION Accordingly, the present invention has been devised with a view to substantially eliminating the above discussed problems inherent in the prior art systems of separating the composite video signal into the chrominance signal and the luminance signal and has for its essential object to provide an improved video signal processing circuit effective to substantially avoid any possible deviation in the signal such as, for example, the color displacement, which circuit can be fabricated in a compact size.
In order to accomplish the above described object of the present invention, the latter provides a luminance-chrominance signal separating circuit which is featured in the provision of synthesizing means for synthesizing three signals delayed a unitary time with respect to each other, a detecting means for detecting correlations of these three signals, and an output means for selecting and outputting, on the basis of a result of detection of the correlations, two signals each indicative of an average value of the signals neighboring in terms of time and a signal which may exist intermediate the length of time.
According to the present invention, the correlation detecting means used therein is operable to detect two of the three signals delayed a predetermined time T from each other, which have a closer correlation with each other.
The output signal selecting means is operable in response to the result of detection performed by the correlation detecting means to output the signal indicative of the average value of these two signals having the closer correlation with each other, or the signal existing at the center of the length of time between these two signals when they have no closer correlation with each other.
Therefore, with the video signal processing circuit of the present invention, it is possible to perform the signal processing which does not result in the color displacement.
Also, since the video signal processing circuit of the present invention does require the use of neither a number of filters nor a data converting means for the pattern space and, therefore, can be manufactured compact
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TV Signal 
