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:
Dec. 18, 2001
Filed:
Jan. 21, 2000
Applicant:
Inventors:
Mako Kobayashi, Hyogo, JP;
Fukashi Morishita, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05F 3/02 ; G11C 1/300 ;
U.S. Cl.
CPC ...
G05F 3/02 ; G11C 1/300 ;
Abstract
When a tuning mode signal VTUNE is activated, control clock signal TCLK is output, and counter counts up tuning signals TSIG,to TSIG,. Tuning circuits render conductive the terminals of respective transistors, and reference potential Vref lowers in accordance with the reduction in the resistance value. When reference potential Vref attains equal to the external reference potential Ext.Vref, differential amplifier circuit stops output of the control clock signal TCLK In accordance with the plurality of the determined tuning signals TSIG,to TSIG,, fuse elements inside the tuning circuits are programmed.