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:
Jan. 29, 2002
Filed:
Mar. 09, 2000
Hisayuki Higuchi, Kokubunji, JP;
Suguru Tachibana, Damascus, SY;
Koichiro Ishibashi, Warabi, JP;
Keijiro Uehara, Sagamihara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A semiconductor integrated circuit, particularly a circuit for a high-speed low-power-consumption table look-aside buffer mounted in a microprocessor LSI. The semiconductor integrated circuit is provided with field effect transistors for comparing inputted multibit data signals with stored data and a coincidence-detecting signal line ( ) to which current is applied at least while the data signals are compared with stored data. When the data signals coincide with the stored data, the transistors ( ) conduct. The number of transistors ( ) is equal to that of the inputted data signals. The drains of the transistors ( are connected in parallel, and the sources are also connected in parallel and supplied with a predetermined voltage. By the integrated circuit, whether or not the inputted data signals coincide with the stored data is detected by detecting the potential of the coincidence-detecting signal line ( ) upon a change of the applied current.