Sony Corporation

Seiji Kawa

Minoru Kawahara

Fumihiko Sudo

Takao Inoue

Takao Suzuki

Hitoshi Nakamura

Yoshiaki Shibata

Taku Kihara

Motohiro Nakasuji

Takeshi Oka

Manabu Hatakenaka

Kazuhiko Sayama

Provided is a signal processing circuit including an image processing unit that performs, at an early stage, a process common to first image signals input using a predetermined number of signal lines in correspondence with first image sensors having a first pixel array and second image signals input using a number of signal lines and commonly used to input the first image signals in correspondence with second image sensors having a second pixel array, and performs specific processes specific to the first and second image signals at a later stage, a conversion unit that converts the second image signals subjected to the specific process according to a format of the first image signals, and a selection unit that selects one of the first image signals subjected to the specific process and the converted second image signals and outputs the selected image signals using the predetermined number of signal lines.

Signal processing circuit, imaging device, and program

Decoding control apparatus for decoding predictive encoded data. A picture detector determines the fewest possible pictures which must be decoded first before decoding a picture which are to be displayed after an edit point. A start-point finder for finds the start point for decoding the fewest possible pictures determined by said picture detector even though those fewest pictures are not to be displayed. A plurality of decoders decode the encoded data in picture units, on the basis of the start point. A picture obtained by the decoders is selected on the basis of the edit point and output.

Decoding control apparatus which decodes the fewest pictures (although not displayed) prior to an edit point

A shortest cut duration is a minimum required period between an edit point set on a stream of pictures such as an MPEG stream and the next edit point set on the stream. Restrictions are made on the shortest cut duration lenient in editing the stream. A controller detects each edit point set on the stream and identifies the fewest possible pictures which are not to be displayed but must be decoded first before decoding a picture to be displayed after the edit point. Then, the controller finds a start point representing the timing to start decoding the fewest possible pictures. Subsequently, the controller controls decoders to decode the stream in picture units on the basis of the start point, and controls a switcher to select one of outputs of the decoders on the basis of the edit point.

Predictive encoding and data decoding control to decode fewest possible pictures

The present invention allows a device to easily convert an on-screen image in HD format or SD format without increasing the processing load. The device according to an embodiment of the present invention uses the on-screen image Din which the number of horizontal pixels is set between horizontal pixel counts of HD format and horizontal pixel counts of SD format. Therefore, the device can utilize a relatively simple conversion ratio when converting the image in HD and SD format. This tremendously reduces the computational processing load. In addition, since the device uses the simple conversion ratio, the device can maintain the quality of the on-screen image D

On-screen display apparatus and on-screen display generation method

An image processing system includes an information processing apparatus for editing edit text data for processing an image and converting the edit text data into a command for processing the image, and an image processing apparatus for processing the image on the basis of the command. The information processing apparatus includes an editing section, a command conversion section, a processing section, an image conversion section, and an output section. The image processing apparatus includes an obtaining section, a recognition section, and a processing section.

Image processing system, information processing apparatus and method, image processing apparatus and method, recording medium, and program

A shortest cut duration is a minimum required period between an edit point set on a stream of pictures such as an MPEG stream and the next edit point set on the stream. Restrictions are made on the shortest cut duration lenient in a process to seamlessly reproduce a result of editing the stream in order to enhance the freedom of editing in carrying out a process of editing the stream. A controller detects each edit point set on the stream and, for the edit point, the controller identifies fewest possible pictures, which are not to be displayed but must be decoded first before decoding a picture to be displayed after the edit point. Then, the controller finds a start point representing a timing to start a process of decoding the one or fewest possible pictures. Subsequently, the controller controls processes carried out by decoders to decode the stream in picture units on the basis of the start point, and controls a switcher to select one of outputs of the decoders on the basis of the edit point.

Predictive encoding and data decoding control

Of three-color signals R&prime;, G&prime; and B&prime;, obtained as output signals of multipliers R, G and B, designed to effectuate luminance compression of the three-color signals R, G and B sent to input terminals R, G and B by multiplying the signals R, G and B with a coefficient k, in such a manner as to maintain saturation and color hue of the three-color signals R, G and B, only the saturation of color video signals represented by the three-color signals R&prime;, G&prime; and B&prime; is compressed by first saturation compression circuits R, G and B so that the signal level of the signal of the three-color signals R&prime;, G&prime; and B&prime; having the highest signal level will be the clip level. Of the three prime color signals R&Prime;, G&Prime; and B&Prime; obtained as output signals of the first saturation compression circuits R, G and B, only the saturation of the signals R&Prime;, G&Prime; and B&Prime; is compressed, in a state in which the luminance and the color hue of the signals R&Prime;, G&Prime; and B&Prime; are maintained, in order to obtain three prime color signals R*, G* and B* the high luminance portion of which has only saturation changed.

Picture signal processing apparatus, color video camera and picture signal processing method

Video signal compression apparatus for analyzing an input video signal to determine the distribution of signal levels and compressing the input signal as a function of the distribution to produce an output video signal.

Video signal compression apparatus utilizing multiple compression ratios

There is provided a signal processing apparatus for processing input three primary color signals, which is capable of providing natural color reproduction. Input color signals R to B are subjected to a matrix operation to obtain color difference signals (R-Y)0 and (B-Y)0. The color signals R to B are compressed by means of high luminance compression circuits 12R to 12B, respectively, and these output color signals R1, G1 and B1 are subjected to obtain a luminance signal Y1, color difference signals (R-Y)1 and (B-Y)1. The respective outputs obtained from the matrix operation are operated by means of look-up tables 43 to 45 and 52 to obtain color difference signals (R-Y)3 and (B-Y)3 for representing a color which has the same hue as a hue .theta. 0 of color represented by color signals R to B and a saturation same with the saturation r1 of color represented by color signals R1, G1 and B1. Then, the luminance signal Y1, color difference signals (R-Y)3 and (B-Y)3 are subjected to an inverse matrix operation to obtain output color signals Rn, Gn and Bn. The color signals thus obtained have no change in a hue and the saturation smaller than that of conventional ones even if high luminance compression processing is executed. Accordingly, a high luminance portion can be prevented from being too deeply colored.

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Kanagawa, Japan

Seiji Kawa