Compare circuit for content-addressable memories

Details Compare circuit for content-addressable memories Compare circuit for content-addressable memories

1996-07-18

1997-12-16

Nelms, David C.

Static information storage and retrieval

Associative memories

Ferroelectric cell

36518907, 365190, G11C 1504

Patent

active

056992882

ABSTRACT:
A compare circuit for a content-addressable memory within a computer system is disclosed. In accordance with a preferred embodiment of the present invention, a compare circuit for a content-addressable memory comprises a pair of storage node lines, a pair of compare lines, and two sets of transistors. The pair of storage node lines are complementary to each other and are connected to a memory cell of the content-addressable memory for determining a state of the memory cell. In a like manner, the pair of compare lines are also complementary to each other. The first set of transistors are four transistors connected in series to be enabled by a logical one from one of the storage node lines for allowing a signal from one of the compare lines to propagate to an output. The second set of transistors are also four transistors connected in series to be enabled by a logical zero from the same storage node line for allowing a signal from the other compare line to propagate to the output. Under the present invention, a signal from either compare line needs to propagate through only one level of transistors in order to reach the output.

REFERENCES:
patent: 5386379 (1995-01-01), Ali-Yahia et al.
patent: 5490102 (1996-02-01), Jubran
patent: 5495382 (1996-02-01), Albon

Affiliated with

Also associated with

Rating

Compare circuit for content-addressable memories does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compare circuit for content-addressable memories, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compare circuit for content-addressable memories will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-213493