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:
Feb. 12, 1991
Filed:
Dec. 15, 1988
Applicant:
Inventors:
Ikuo J Sanwo, San Marcos, CA (US);
Gregory H Milby, San Diego, CA (US);
Moo Y Kim, Escondido, CA (US);
Assignee:
NCR Corporation, Dayton, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307451 ; 307443 ; 307452 ; 307480 ; 307481 ; 307351 ; 307362 ; 307546 ; 365203 ; 365205 ;
Abstract
A high speed computer data transfer system includes a clamping circuit for limiting pre-charge voltages in the case where multiple pre-charge cycles occur before a pull-down operation. Data bus voltage swings between logic high and logic low levels as well as pull-down times are reduced, thus lowering the time needed to transfer the data. The preferred embodiment is implemented using complementary metal-oxide-semiconductor (CMOS) technology.