Sony Corporation

Shingo Shimazaki

Takashi Asaida

Taku Kihara

Hiroshi Higuchi

Takashi Kameyama

Shoji Kosuge

Mikio Ishii

Masahiro Take

Yoshiaki Satou

A video signal processing apparatus includes a video signal synthesis section for, when positions after and before a border position by a predetermined length are respectively set as first and second positions, taking out a first main area part corresponding to a part before the border position and a first border area part corresponding to a part from the border position to the first position from a first video signal and also a second border area part corresponding to a part from the second position to the border position and a second main area part corresponding to a part after the border position from a second video signal for synthesis, an image processing section for performing an image processing on the synthesized video signal, and a video signal output section for removing the first and second border area parts from the synthesized video signal to obtain an output video signal.

Wipe video signal processing apparatus, wipe video signal processing method, computer program product, and image display apparatus

An edge enhancement circuit uses bandpass filters to separate an original video signal into low-, middle- and high-frequency band edge components which will be supplied to waveform shaping circuits. Each of the waveform shaping circuits detects an amplitude peak level of the edge component, generates a gain coefficient based on the peak level, and multiplies the original video signal by the gain coefficient. The results of multiplication are added together to generate a final detail signal. Thus, the edge enhancement circuit amplifies the amplitude of the edge component having a frequency approximate to the spatial frequency of the video signal to provide an edge enhancement based on a frequency characteristic corresponding to the spatial frequency of the video signal.

Contour-emphasizing circuit

The present invention provides an edge enhancing apparatus () including a filter () to extract a horizontal high-frequency component of a video signal, a rise/fall detection detector () to detect leading and trailing edges of the horizontal high-frequency component of the video signal, and a waveform balancer () to multiply the high frequency component extracted by the filter () by a gain to generate an enhancement signal for enhancing the original video signal. The waveform balancer () works to make the gain a value larger than '1' when the signal level of the high frequency component at the leading edge of the video signal is positive while making the gain a value of '1' or smaller than &#x201c;1&#x201d; when the signal level of the high frequency component at the leading edge of the video signal is negative, and make the gain a value of &#x201c;1&#x201d; or smaller than &#x201c;1&#x201d; when the signal level of the high frequency component at the trailing edge of the video signal is positive while making the gain a value larger than &#x201c;1&#x201d; when the signal level of the high frequency component at the trailing edge of the video signal is negative.

Contour-emphasizing device

Video camera which emphasizes an outline of a video signal produced thereby. A detail signal of a video image represented by the video signal is generated and which represents a vertical outline emphasis signal. Edges of the video image and burst-like portions of the video signal are detected, and an edge detection signal is generated that corresponds in one manner to the detected edges and that corresponds in another manner to the detected burst portions. The detail signal is adjusted by the edge detection signal or by a cross color suppression signal generated from the vertical outline emphasis signal. The video signal then is modified by the adjusted detail signal so as to produce the outline emphasized video signal. The detail signal may also be adjusted by a gain setting signal that corresponds to the vertical outline emphasis signal and which is compressed in level when the vertical outline emphasis signal is relatively low.

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Kanagawa, Japan

Shingo Shimazaki