The method for providing a "Don't Care" bit to improve the speed of information matching in a digital information processing system. After the match information is input, it will be divided into multiple sub-bit-streams and then input to a correspondent selector for obtaining the content of a selected...http://www.google.es/patents/US6615210?utm_source=gb-gplus-sharePatente US6615210 - Bit stream ternary match scheme
