Electrical computers and digital processing systems: support – Clock – pulse – or timing signal generation or analysis – Multiple or variable intervals or frequencies
Reexamination Certificate
2005-10-18
2009-11-17
Cao, Chun (Department: 2115)
Electrical computers and digital processing systems: support
Clock, pulse, or timing signal generation or analysis
Multiple or variable intervals or frequencies
C711S169000
Reexamination Certificate
active
07620838
ABSTRACT:
A circuit system is provided capable of improving the throughput thereof by eliminating the operational constraint that if the operating frequency of a content addressable memory is lower than the operating frequency of a system LSI, two system clocks should be provided, or the higher frequency should be synchronized with the slower system clock. A clock control circuit (103) for down-converting an internal clock (Φ1) of a LSI (101) is provided, and a control signal whose frequency is made lower is used to operate a content addressable memory circuit (102).
REFERENCES:
patent: 5083296 (1992-01-01), Hara et al.
patent: 5287327 (1994-02-01), Takasugi
patent: 5359564 (1994-10-01), Liu et al.
patent: 6304511 (2001-10-01), Gans et al.
patent: 6356508 (2002-03-01), Yoshimoto
patent: 6442103 (2002-08-01), Kwak et al.
patent: 6593959 (2003-07-01), Kim et al.
patent: 6731526 (2004-05-01), Inoue
patent: 6735101 (2004-05-01), Aikawa
patent: 6944039 (2005-09-01), Nataraj et al.
patent: 2002/0021152 (2002-02-01), Goto et al.
patent: 2003/0016389 (2003-01-01), Miyaguchi et al.
patent: 2006/0120207 (2006-06-01), Lee
patent: 06-349284 (1994-12-01), None
patent: 2003-272386 (2003-09-01), None
patent: 2003-303495 (2003-10-01), None
Office Action in Japanese Application No. 2004-303648, dispatched Apr. 21, 2009.
Anan Naoyuki
Higeta Keiichi
Koba Takashi
Park Seryung
Sakai Mikiko
Brundidge & Stanger, P.C.
Cao Chun
Hitachi , Ltd.
Hitachi ULSI Systems Co. Ltd.
Tran Vincent T
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