KR960003418A

KR960003418A - Half Pixel Moving Compensator

Info

Publication number: KR960003418A
Application number: KR1019940015370A
Authority: KR
Inventors: 윤재수
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1994-06-30
Filing date: 1994-06-30
Publication date: 1996-01-26
Also published as: KR0128885B1

Abstract

본 발명은 동영상 디코더에서 움직임 보상시 화소간 보간과 전, 후 프레임으로부터의 기준 데이타의 조합을 파이프라인 구조를 이용하여 수행하는 것으로, 프레임 메모리로부터 읽어들인 기준 데이타1과 2를 각각 저장하는 제1 및 제2버퍼와, 움직임 보상 데이타 셀렉션 신호에 의해 상기 제1버퍼 또는 제2버퍼의 출력을 선택 출력하는 선택 수단과, 상기 선택 수단에서 출력되는 픽셀들에 대해 수평방향 반 픽셀 필터링을 수행하는 수평 필터링 수단과, 상기 수평 필터링 수단에서 출력되는 필셀들에 대해 수직 방향 반 픽셀 필터링을 수행하는 수직 필터링 수단과, 상기 수직 필터링 수단에서 출력되는 수평, 수직 또는 양방향 모두에 대해 반픽셀 필터링된 픽셀들을 조합하는 예측 조합 수단으로 구성된다.The present invention performs a combination of reference data from inter-pixel interpolation and before and after frames during a motion compensation in a video decoder using a pipelined structure, and stores first reference data 1 and 2 read from the frame memory, respectively. And a second buffer, selection means for selectively outputting the output of the first buffer or the second buffer by a motion compensation data selection signal, and horizontal horizontal pixel filtering on the pixels output from the selection means. A combination of a filtering means, vertical filtering means for performing vertical half pixel filtering on the pixels output from the horizontal filtering means, and half pixel filtered pixels for both horizontal, vertical or bidirectional output from the vertical filtering means. Predictive combining means.

Description

Half Pixel Moving Compensator

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 따른 반 픽셀 움직임 보상장치의 블럭도.2 is a block diagram of a half pixel motion compensation device according to the present invention.

제3도는 제2도의 버퍼에 저장되는 기준 데이타 1,2의 일실시예를 나타낸 도면이다.FIG. 3 is a diagram illustrating an embodiment of reference data 1,2 stored in the buffer of FIG.

Claims

First and second buffers for storing reference data 1 and 2 read from a frame memory, and a motion compensation data selection signal for selecting which reference data to read pixel values from. A selection means for selectively outputting the output, and pixels that are horizontally filtered by the least significant bit value of the horizontal motion vector and horizontally filtered by the horizontal half-pixel filtering on the pixels output from the selection means. Horizontal filtering means for selectively outputting the pixels, and pixels filtered or not filtered in the vertical direction by performing vertical half-pixel filtering on the pixels output from the horizontal filtering means and by the least significant bit value of the vertical motion vector. Vertical filtering means for selectively outputting the Prediction that delays 1 pixel for half pixel filtered pixels for both horizontal, vertical, or bidirectional output, then combines with undelayed pixels and selectively outputs the combined or uncombined pixels by the motion compensation type signal Motion picture compensation device composed of a combination means.

The apparatus of claim 1, wherein the horizontal filtering unit comprises: a 2-pixel delay unit configured to delay pixels selected and output by the selection unit by 2 pixels; An adder for performing horizontal half-pixel filtering by adding the pixels of the means, a left shifter for shifting the pixels delayed by the two-pixel delay part left to double, and a least significant bit value of the vertical motion vector input to the selection end; And a multiplexer for selectively outputting the output of the adder or the left shift.

2. The apparatus of claim 1, wherein the vertical filtering means comprises: an 18 pixel delay unit for delaying the output of the horizontal filtering means by 18 pixels, pixels delayed by 18 pixels in the 18 pixel delay unit, and output from the horizontal peeling means. An output of the right shift unit by an adder for adding pixels to be added, a right shift unit for performing vertical half-pixel filtering by shifting the output of the adder to the right, and a least significant bit value of the vertical motion vector input to the selection terminal or And a multiplexer for selectively outputting an output of an 18-pixel delay unit not subjected to vertical half-pixel filtering, and a divider for rounding a result of dividing the output of the multiplexer by two.

2. The apparatus of claim 1, wherein the prediction combining means comprises: a one pixel delay unit for delaying pixels output from the vertical filtering unit by one pixel, pixels delayed by one pixel from the one pixel delay unit, and the vertical filtering block. A divider for dividing the output of the adder by dividing the output of the adder by two, and a result of the dividing unit for rounding, and an output of the divider unit or the output of the one-pixel delay unit by a macro type signal input to a selection terminal. Motion compensation device composed of a multiplexer to output.

※ Note: The disclosure is based on the initial application.