DATA PROCESSOR, PRINTER CONTROLLER, DATA PROCESSING METHOD FOR DATA PROCESSOR, DATA PROCESSING METHOD FOR PRINTER CONTROLLER, AND COMPUTER-READABLE STORAGE MEDIUM STORED WITH PROGRAM

摘要

PROBLEM TO BE SOLVED: To evade a memory-over state in a compressing process by previously deciding a state wherein the number of compressed data exceeds a prescribed capacity and limiting the execution of the compressing process. ;SOLUTION: When a mode wherein compressed data are not transferred is set in data compression, a compressing/expanding core 503 carries on only a compressing process for data stored in a source FIFO memory 501 through a destination FIFO memory 502, measures the number of compressed data by an internal register 506, and controls the execution of destination DMA(direct memory access) for transferring the compressed data to the memory.;COPYRIGHT: (C)2000,JPO