Processing of compacted data

摘要: This data processing technique utilizes compacted in the form of variable-length codes having length-representing prefix portions which themselves are encoded. The relatively small amount storage needed when such a code format is used enables to be conveniently encoded and handled as groups characters rather than single characters. prefixes decoded by small, fast, search-only type associative memory furnishes match-indicating signal an address another conventional elements. output latter may contain base still indication how many bits remain current word. These remaining furnish displacement value which, combination with address, will locate fixed-length word or character group last unit. In those instances where length would become excessively long (for less frequently occurring groups) original employed, each being preceded common "COPY" code. A special decoding procedure invoked this copy