The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2006
Filed:
Sep. 24, 2001
Klaus Helwig, Weil i.Schoenbuch, DE;
Klaus Helwig, Weil i.Schoenbuch, DE;
Other;
Abstract
Power consumption is reduced in a content addressable memory of a data processing system or a data processor. The content addressable memory includes at least a first single bit storage (), a word line (WL), at least one bit write line (BLWT, BLWC) and a hit/miss line (H/M), and at least a first single bit compare circuit (), the first single bit storage including at least a first output (A; A) and the first single bit compare circuit including at least a first compare bit input (BLCT; CB) and two field effect transistors (). In order to reduce the power consumption, the first output (A; A) of the single bit storage () is applied to the gate of only one, a first field effect transistor () of the two field effect transistors (). For an additional reduction of the power consumption, two single bit storages () are connected to a shared compare circuit (). In case of a mismatch, only one out of four compare nodes (C, C, C, C) of the shared compare circuit is switched high, i.e. changes its potential.