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:
Mar. 04, 1997
Filed:
Apr. 27, 1995
Applicant:
Inventors:
Hisayuki Ojima, Kawasaki, JP;
Hiroshi Kuwahara, Oyama, JP;
Assignee:
Fujitsu Limited, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
326 93 ; 322166 ; 322252 ;
Abstract
A circuit changes the timing for reading data by varying bias potential applied to a clock signal used to read the data. The circuit has a comparator for comparing an external clock signal with a reference voltage that provides a logic decision level and generating an internal clock signal, and a logic circuit for fetching input data in synchronization with the internal clock signal. The comparator has a bias changer. The bias changer applies DC bias potential to the external clock signal to the comparator, to change the phase of the internal clock signal.