Image conversion device

Details Image conversion device Image conversion device

Filed on

1997-07-10

Date issued

1999-11-23

Examiner

Boudreau, Leo H.

Patent Class

Image analysis

SubClass

Image compression or coding

Other Related Categories

382234, G06K 936, G06K 946

Type

Patent

Status

active

Patent number

059914467

Description

ABSTRACT:
It is an object of the present invention to simultaneously perform input or output of picture signals for a plurality of components. An image data input interface (310) is capable of input of picture signals (Pm) of three components at its maximum. For example, when picture signals (Pm) of three components are inputted, a clock divider (410) supplies a 1/3 divided signal of a clock signal (CLK) to the image data input interface (310) on the basis of a selection signal (SEL). In the image date input interface (310), the picture signals (Pm) of three components are simultaneously inputted in synchronization with the 1/3 divided signal and they are sent out to a discrete cosine transform unit (4) in synchronization with the clock signal (CLK). The component to which the sent picture signals (Pxy) belong sequentially changes for every 8.times.8 picture elements. It has the effect of simultaneously performing input or output of picture signals for a plurality of components while matching with operation of a coding device unit is maintained.

REFERENCES:
patent: 5270714 (1993-12-01), Tanaka et al.
patent: 5371517 (1994-12-01), Izzi et al.

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