Matsushita Electric Industrial Co., Ltd.

Matsushita Electric Industrial

Yoshihisa Nishigori

Satoru Inagaki

Takahisa Hatano

Kenjiro Tsuda

Tetsuya Imamura

Akira Yoneyama

Yoshimori Nakase

Hironori Nakano

Takayasu Miki

Kenjirou Tsuda

Takatoshi Nada

Hideyuki Oogose

Yoshimasa Sogou

Yoshimasa Sogo

A coordinate light source calculating unit calculates 3D coordinates for points forming one or more objects and performs clipping. A rendering unit performs rendering and outputs the formed CG image to a frame buffer . The coordinate light source calculating unit calculates 3D coordinates forming a video display surface. A perspective projection unit calculates 2D coordinates for each point forming the video display surface. An image decoder decodes a video frame, and an image transform unit transforms this image and outputs it to the frame buffer , enabling the video frame to be pasted onto the CG image.

Moving image combining apparatus combining computer graphic image and at least one video sequence composed of a plurality of video frames

A picture processor including a picture-deformation-information input section for inputting the information for the degree of enlargement/contraction of each portion of a picture; a decoding section for inputting encoded picture data of the picture, inputting the information for the degree of enlargement/contraction of each portion of the picture from the picture-deformation-information input section, decoding the picture data every portion of the picture in accordance with the information for the degree of enlargement/contraction, and moreover decoding the whole picture data independently of the information for the degree of enlargement/contraction; a reference picture generation section for generating a reference picture enlarged or contracted for each portion of the picture by using a picture in which the whole picture data is decoded supplied from the decoding section, the information for the degree of enlargement/contraction of each portion of the picture from the picture-deformation-information input section, and the movement vector of the picture data; and an addition section for adding a picture decoded for each portion of the picture supplied from the decoding section and a reference picture supplied from the reference-picture generation section.

Image processor, image data processor and variable length encoder/decoder

An apparatus comprises an object generation unit for generating an object based on three-dimensional object data externally input, an object position determination unit that moves the generated object according to a user input, and thereby determines an object position, a view point position determination unit that moves a view point according to the user input and thereby determines a view point position, a distance calculation unit for calculating a distance from the object position and the view point position, a frame rate determination unit for determining a frame rate corresponding to the calculated distance on the basis of a set table or formula, and a frame rate control unit and a moving image generation unit for reproducing the moving image with the frame rate of moving image data externally input reduced.

Device for controlling quality of reproduction of motion picture and method for controlling the same

A head-mounted display for displaying an image that matches a viewer's head movement has a head tracker for detecting the viewer's head movement, an eye tracker for detecting the viewer's eye movement, and an adaptive filter for adaptively filtering the output of the head tracker in accordance with the output of the head tracker and the output of the eye tracker, and when tracker, and when the viewer is watching a particular object in the displayed image, the adaptive filter is set as a low-pass filter, and this and the output gain of the head tracker is lowered; in other cases, the adaptive filter is set as an all-pass filter, and this prevents minute shaking of the head from being reflected on the displayed image, while retaining image display response to head motion, and furthermore, this serves to keep the particular object from being shifted outside the field of view.

Head-mounted display

A device that separates a luminance signal and a chrominance signal from an input composite color television signal, suppressing cross color interference and keeping a good color transient characteristic, by selecting characteristics of the color bandpass filters according to a vertical correlation value after obtaining a chrominance signal at an adaptive type comb filters. The apparatus includes a cascade connection of a plurality of delay devices each one of which delays one horizontal period; a correlation detecting circuit for outputting correlation values between the reference signal and a signal at the vertical vicinity of the point of the reference signal on the screen, where an output signal of the central delay device is regarded as a reference signal; comb filters for separating a chrominance signal from the composite color television signal; a plurality of bandpass filters for limiting the bandwidth of the chrominance signal obtained at the comb filters; and a mixing circuit for mixing the outputs of the bandpass filters according to the correlation values between the reference signal and the signal at the vertical vicinity of the point of the reference signal.

Luminance and chrominance signal separator using correlation detection

A device that separates a luminance signal and a chrominance signal from an input composite color television signal, suppressing cross color interference and keeping a good color transient characteristic, by selecting characteristics of the color bandpass filters according to a vertical correlation value after obtaining a chrominance signal at an adaptive type comb filters. The apparatus includes a cascade connection of a plurality of delay devices each one of which delays one horizontal period; chrominance correlation detecting circuits for obtaining correlation of a chrominance signal between a reference signal and a signal at the vertical vicinity of the point of the reference signal on the screen, where an output signal of the central delay device is regarded as a reference signal; luminance correlation detecting circuits for obtaining correlation of a luminance signal between the reference signal and a signal at the vertical vicinity of the point of the reference signal on the screen; a correlation judging circuit for judging if there is correlation from the correlation of the chrominance signals and the correlation of the luminance signals; comb filters for separating a chrominance signal from the composite color television signal; and a selector for selecting an output of the comb filters according to the judgment of the correlation.

A chrominance signal can be separated from a composite color television signal without misdetection in correlation detection even when the chrominance signal level is small by calculating vertical correlation values, comparing them with the threshold value corresponding to the chrominance signal level and judging if there is correlation or not. A chrominance signal separating apparatus includes a cascade connection of delay devices, where each delay device delays an input signal by 1H period. Comb filters separate a luminance signal and a chrominance signal from the composite color television signal by inputting two signals from the input and the output of each delay device which have a 1H period time difference. The output of one of the delay devices is regarded as a reference signal. A correlation detecting circuit calculates correlation values between the reference signal and a signal at the vertical vicinity of the reference signal on the screen. A level detecting circuit detects the level of the composite color television signal. Comparators compare the output of the correlation detecting circuit and the output of the level detecting circuit. A mixing circuit mixes the outputs of the comb filters based on the output of the comparators.

Chrominance signal separator using chrominance signal correlation

A comb filter separates a luminance signal and chrominance signal from a composite video signal, a phase calculation circuit calculates a phase delay of the chrominance signal, at least one delay circuit delays an output signal of the phase calculation circuit, a phase difference calculation circuit calculates a difference between an output signal of the phase calculation circuit and an output signal of the delay circuit, and a chrominance signal correction circuit attenuates the chrominance signal in response to an output signal of the phase difference calculation circuit. The chrominance signal having crosstalk from the luminance signal is suppressed to prevent the generation of cross color.

Luminance/chrominance signal separating apparatus which attenuates

A luminance/chrominance separator includes a high pass filter for separating a high-frequency signal from a composite video signal, an adder for finding a sum signal indicative of a sum of signals before and after one horizontal period with respect to the high-frequency signal, a subtracter for finding a difference between the signals before and after one horizontal period, and a selection circuit for selecting smaller one of the sum and difference signal in absolute value, wherein an output of the selection circuit is used to suppress any leakage of luminance and chrominance signals into the output of a comb filter.

Luminance/chrominance separator including cross-talk reducing function

A motion detection circuit includes series connected delay circuits for obtaining, with respect to a perceived pixel based on a NTSC input signal, a pixel 262 lines preceding the perceived pixel, a pixel 263 lines preceding the perceived pixel, and a pixel one frame preceding the perceived pixel. A first threshold circuit is provided for comparing the amplitude of a first sum, which is the sum of the perceived pixel and the pixel one frame before, with a first threshold. A second threshold circuit is provided for comparing the amplitude of a second sum, which is the sum of the perceived pixel and the pixel 263 lines before, with a second threshold. A third threshold circuit is provided for comparing the amplitude of a third sum, which is the sum of the pixel 262 lines before the perceived pixel and the pixel one frame before the perceived pixel, with a third threshold. A logic circuit is provided for detecting a motion when the first sum is less than the first threshold and, at the same time, when at least one of two conditions is satisfied, the first condition being that the second sum is greater than the second threshold and the second condition being that the third sum is greater then the third threshold.

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Itami, Japan

Yoshihisa Nishigori