Pattern addressable memory
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United States of America Patent
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May 24, 1988
Grant Date -
N/A
app pub date -
Aug 13, 1985
filing date -
Aug 13, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A memory system for storing and retrieving data sequences of symbols in response to a query sequence is disclosed. Each of the sequences is made up of three types of symbols, constants, delimiters, and variables. A data sequence is retrieved in response to a query sequence if the two sequence can be made identical by replacing the variables in each sequence by constants or combinations of constants and delimiters, the combinations beginning and ending with a delimiter. To reduce the time needed to search the memory for all data sequences corresponding to a given query sequence, multiple processing units are employed. In addition to carrying out rule-based searches, the memory system can efficiently retrieve all records containing a specified list of key words.
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