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:
Jul. 07, 1992
Filed:
May. 22, 1989
Applicant:
Inventors:
Gregory H Milby, San Diego, CA (US);
Ikuo J Sanwo, San Marcos, CA (US);
Quynh-Giao X Le, Escondido, CA (US);
Assignee:
NCR Corporation, Dayton, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
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 transistor diode 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. Also, body effect upon the clamping circuit is lowered. The preferred embodiment is implemented using complementary metal-oxide-semiconductor (CMOS) technology.