Moving image signal coding system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 6, 1989
Grant Date -
N/A
app pub date -
Nov 9, 1987
filing date -
Nov 10, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system of coding moving image signals produces a predictive error signal by a predictive coding based on inter-frame correlation and quantizing the predictive error signal for each block of a picture frame constituted by N lines of M pixels. The system includes a block coding/non-coding decision unit for calculating a first evaluation value Sm of the predictive error signal for each block of the picture frame. This unit decides that block non-coding is applicable when the first evaluation value Sm is less than a first threshold value T.sub.1 and that block coding is applicable when the first evaluation value Sm is greater than the first threshold value T.sub.1. The predictive error signal is not transmitted when the result of the decision is for block non-coding, and the predictive error signal is quantized and transmitted when the result of the decision is for block coding.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully