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:
Aug. 03, 2010
Filed:
Dec. 26, 2007
Fumio Yuuki, Fujimino, JP;
Hiroki Yamashita, Hachioji, JP;
Masayoshi Yagyu, Hanno, JP;
Koji Fukuda, Fuchu, JP;
Fumio Yuuki, Fujimino, JP;
Hiroki Yamashita, Hachioji, JP;
Masayoshi Yagyu, Hanno, JP;
Koji Fukuda, Fuchu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
For example, a gain control part and a common node control part are provided in a logic circuit including a data acquisition part that has a differential amplifier configuration and acquires a data input signal when a click signal is an 'H' level and a latch part that latches a data output signal from the data acquisition part when the click signal is an 'L' level. The gain control part is provided between common nodes of NMOS transistors in the differential amplifier and serves to make the gain of the differential amplifier higher in a high frequency band than in a low frequency band. When the clock signal is an “L” level, the common node control part serves to control an electrical charge so as to eliminate a potential difference between the common nodes. Thus, the transition time of the data output signal is speeded up and the setup margin is increased in the latch part. The above described technique can therefore speed up operations of various logic circuits such as a latch circuit.