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:
Sep. 09, 2008
Filed:
Oct. 29, 2004
Kazunari Matsumoto, Kawasaki, JP;
Hirohide Sugahara, Kawasaki, JP;
Katsuhiko Takeuchi, Kawasaki, JP;
Shinichi Utsunomiya, Kawasaki, JP;
Sumie Matsubayashi, Kawasaki, JP;
Nobuyuki Myouga, Kawasaki, JP;
Kazunari Matsumoto, Kawasaki, JP;
Hirohide Sugahara, Kawasaki, JP;
Katsuhiko Takeuchi, Kawasaki, JP;
Shinichi Utsunomiya, Kawasaki, JP;
Sumie Matsubayashi, Kawasaki, JP;
Nobuyuki Myouga, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A power saving of a serial interface circuit decreases the unnecessary power consumption of a serial interface circuit, while decreasing the return time and expanding the power saving range. Gates are disposed for stopping the clock supply to a digital portion of the interface circuit while maintaining operation of clock sources in the digital portions. Therefore a quick shift to and return from the power save mode by stopping and restarting clocks is implemented, which further decreases power consumption.