Video signal encoder capable of encoding video signal data of vi

Details Video signal encoder capable of encoding video signal data of vi Video signal encoder capable of encoding video signal data of vi

1992-02-06

1993-11-16

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358141, H04N 712, H04N 704

Patent

active

052628531

ABSTRACT:
In an encoder for selectively receiving, blocking and coding by orthogonal transformation an image A with a screen aspect ratio which is greater than 4:3 or an image B with a screen aspect ratio of 4:3, when the image A is entered, it is divided into a basic screen with an aspect ratio of 4:3 corresponding to a central portion of a screen and an additional screen other than the basic screen. Coding is controlled so that a sum of coded data quantity of a specified number of blocks m of orthogonal transformation of the basic screen and a specified number of blocks n of orthogonal transformation of the additional screen is within a specified data quantity x. When the image B is entered, the coding is controlled so that a coded data quantity of the same number of blocks of orthogonal transformation as the specified number of blocks of orthogonal transformation m of the basic screen of the image A is within the same data quantity as the specified data quantity x.

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