Picture processing system for output on CRT-screen or printer - has compander or codec and enlarger-reducer connected by internal bus coupled via gate to picture bus where linear density conversion occurs

摘要

The system has a memory unit (40a) to store pictures in coded form. A read-out unit (34) reads pictures from the memory unit. A processing unit (14) decodes the picture read out and performs a linear density conversion on the decoded picture. A bus (56) connects the decoder unit to the converting unit inside the processing unit. A page memory (40) stores the picture obtained by the conversion unit. A picture bus (32) carries the output converted picture data to a second storage unit (40). The first memory unit is a FIFO buffer. The read-out unit has a CPU connected to the system bus (30). ADVANTAGE - Fast linear density conversion when picture is sought or called.