PURPOSE: To unnecessitate a buffer for non-compressed data, and to attain the successive output of the non-compressed data.
CONSTITUTION: The data of an input register 100 are transmitted to a data retrieving part 102, input buffer 103, and check sum preparing part 104. The input buffer 103 is retrieved by the data retrieving part 102, The data prepared by the check sum preparing part 104 and the input data are compared by a collision judging part 105, and a counter is updated by a counter part 106. A compression code is prepared by a code preparing part 107 by using the check sum, input data, retrieved result, and count value by a signal from an operation deciding logic 108. The check sum is used as a division mark between the non-compressed data and compressed data, and the check sum is added to the tail of the non-compressed data.
KOMACHIYA TSUNETAKA
TSUNODA HITOSHI
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