Matsushita Electric Industrial Co., Ltd.

Matsushita Electrical Industrial Co., Ltd.

Takeshi Yukitake

Shuji Inoue

Yutaka Machida

Masahiro Wakamori

Tadashi Kayada

Kosuke Kubota

Motoya Miyauchi

Joel W Zdepski

Kuriacose Joseph

A method for predicting motion compensation of determining of an input image based on a motion vector of the input image from this input image to a reference image which has been sampled at a first set time, and the method includes calculating a motion vector of the input image based on a move, at a second set time, of a block unit which is a part of the input image and consists of a plurality of pixels, and calculating a motion vector of the reference image based on a move, at the first set time, of a block unit which is a part of the reference image and consists of a plurality of pixels. Move compensation of the input image is calculated both from the motion vector of the input image and from the motion vector of the reference image, to thereby realize a method for determining motion compensation with high precision.

Method for determining motion compensation

A method for predicting motion compensation for determining of an input image based on a motion vector of the input image from this input image to a reference image which has been sampled at a first set time, and the method includes calculating a motion vector of the input image based on a move, at a second set time, of a block unit which is a part of the input image and consists of a plurality of pixels, and calculating a motion vector of the reference image based on a move, at the first set time, of a block unit which is a part of the reference image and consists of a plurality of pixels. Move compensation of the input image is calculated both from the motion vector of the input image and from the motion vector of the reference image, to thereby realize a method for determining motion compensation with high precision.

A vertical region designation circuitoutputs a vertical region designation signal to a vertical driveron the basis of vertical display position information, a vertical synchronization signal and a horizontal synchronization signal. A horizontal region designation circuitoutputs a horizontal region designation signal to a horizontal driveron the basis of horizontal display position information, a pixel synchronization signal, a vertical synchronization signal and a horizontal synchronization signal. The horizontal driveroutputs an input picture signal to a picture display surfacefrom a signal line at a horizontal coordinate corresponding to the number of times of pixel synchronization signals that is counted from an input horizontal synchronization signal as a starting point during a period when a horizontal region designation signal is effective. A vertical driverstores the number of times of synchronization of a horizontal synchronization signal during a period when a vertical region designation signal is effective, and the vertical driverselects a signal line at a vertical coordinate corresponding to the number of times of synchronization. The picture display surfacedisplays a picture signal output from the horizontal driverat a position designated by a horizontal coordinate corresponding to the signal line where the picture signal was output and a vertical coordinate corresponding to the signal line selected by the vertical driver

Display and video producing apparatus, and displaying method and video producing method

A method for determining motion compensation of an input image based on a motion vector of the input image from this input image to a reference image which has been sampled at a first set time, and the method includes calculating a motion vector of the input image based on a move, at a second set time, of a block unit which is a part of the input image and consists of a plurality of pixels, and calculating a motion vector of the reference image based on a motion, at the first set time, of a block unit which is a part of the reference image and consists of a plurality of pixels. Motion compensation of the input image is calculated both from the motion vector of the input image and from the motion vector of the reference image, to thereby realize a method for determining motion compensation with high precision.

Method for predicting motion compensation

A digital video signal decoding apparatus has a memory for storing motion vectors which have been decoded by a decoder, and a motion vector calculating circuit for calculating a presumed motion vector from the motion vectors stored in the memory, whereby, even if part of a bit stream has been lost and each of pixel blocks which have been lost accordingly cannot be decoded, each of the lost pixel blocks is filled in by a corresponding pixel block in a preceeding frame which has been motion-compensated through a motion compensation circuit by using the presumed motion vector, thereby preventing degradation of the picture quality at that pixel block portion.

Digital video signal decoding apparatus and presumed motion vector

A moving-image signal encoding apparatus is provided in which information to be lost is suppressed to a minimum extent when a cell is lost in a transmission line. A cell assembler divides a bitstream into cells of bits and adds to the cells positional information of encoded words having particular meaning within the cell. When the cells are lost in the transmission line, a decoding is allowed from the encoded words having particular meaning which appears at a first bit of bitstream succeeding to the lost cells.

Moving-image signal encoding apparatus

A method for predicting move compensation of an input image based on a move vector of the input image from this input image to a reference image which has been sampled at a first set time, and the method includes calculating a move vector of the input image based on a move, at a second set time, of a block unit which is a part of the input image and consists of a plurality of pixels, and calculating a move vector of the reference image based on a move, at the first set time, of a block unit which is a part of the reference image and consists of a plurality of pixels. Move compensation of the input image is calculated both from the move vector of the input image and from the move vector of the reference image, to thereby realize a method for predicting move compensation with high precision.

Method for predicting move compensation

The invention provides a high-efficient coding apparatus for video signal which is intended to control a quantizing step width finely depending on the quality of a inputted image. The coding apparatus is designed to obtain an average value of prediction errors at blocks, each block on which the orthogonal transform is carried out and to define the upper limit of a quantizing step width output from the quantizing step width control circuit depending on the average value. It results in making it possible to finely control the quantizing step width particularly based on each part of the image from a background to a dynamic area.

High-efficient coding apparatus for video signal

A moving-image signal encoding apparatus includes a transmission buffer memory. A first quantization step size for a normal block other than a refreshed block is determined on the basis of an occupied capacity of the buffer memory. A second quantization step size for the refreshed block is determined on the basis of the first quantization step size. A refreshment instruction signal is generated. One of the first quantization step size and the second quantization step size is selected in response to the refreshment instruction signal.

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Yokohama, Japan

Takeshi Yukitake