Matsushita Electric Industrial Co., Ltd.

Matsushita Electric Industrial

Akira Yoneyama

Kenjiro Tsuda

Tetsuya Imamura

Yoshihisa Nishigori

Satoru Inagaki

Yoshimori Nakase

Hironori Nakano

Takayasu Miki

Hideaki Ogawa

Takatoshi Nada

Tatsuya Nishimura

Tatsuya Murata

Wataru Masuno

Hideyuki Oogose

Yoshimasa Sogou

Yoshimasa Sogo

In analyzing a coded result to thereby calculate data distribution corresponding to a characteristic of an input image signal, rather than determining data distribution for all of the pictures, an aggregate of such pictures that have roughly the same coding difficulty is captured as one scene. This scene is prescribed as a video edit unit (VEU), so that, in configuration, the input image signal is subdivided into a plurality of video edit units (VEUs) to thereby set an average target coding rate for each of these video edit units (VEUs), which are entered as coding conditions to thereby determine data distribution for each of the pictures at the time of re-coding.

Method for coding image signals and apparatus thereof using an average target coding rate

On input coded data, variable length decoding is performed, and motion vector information extracted. The motion vector information is transmitted to the threshold value determination section, and a predetermined threshold value and the value of the motion vector information are compared. Based on the number of motion vector information whose values are the threshold value or more, it determines whether it is necessary to control the interframe motion or not. When the control is necessary because the interframe motion is large, the control signal generation section generates a control signal to suspend the decoding by the varibale length decoding section and thereby reducing a frame rate.

Image signal decoder selectively using frame/field processing

Image signal decoder for determining interframe motion

Image signal decoder and image signal display system

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 recording apparatus for recording compressed video data has compressed video data generator for generating a compressed video data having a plurality of intra frames each of which has no cross-reference to any other frames, and bidirectional interpolated frames and predictive frames each of which has cross-reference to other frame. In the first cycle operation, address detector detects addresses of the intra frames and stores the detected addresses in a memory. A scan information generator generates, with reference to the stored addresses in the memory, scan information for an independent frame including one or two addresses of advanced intra frames and one or two addresses of previous intra frames. The scan information is inserted to each frame and then recorded on a disk. During the reproduce of the disk, the scan information is detected to have a quick access to the intra frame located near by.

Video disk recorder which compresses video data and inserts addresses of

A recording apparatus for recording a compressed video signal on a disc has an adder for adding the sequence header at the beginning of the corresponding sequence, and also adding a copy of the sequence header at a beginning of the final GOP in the corresponding sequence. The reproducing apparatus for reproducing the compressed video signal from a disc has a control for controlling the pick-up device such that under the fast reverse play mode, the pick-up device jumps backward over a copied sequence header when the pick-up device enters a new sequence from a rear end thereof, and reads the copied sequence header. Thus, the compressed video signal in the sequence can be reproduced without reading the sequence header provided at the beginning of the sequence.

Recording and reproducing apparatus and method for compressed video

Growing community of inventors

Higashiosaka, Japan

Akira Yoneyama