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. 24, 1999
Filed:
Dec. 05, 1997
Applicant:
Inventors:
David G Conroy, El Granada, CA (US);
Richard T Witek, Austin, TX (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395558 ; 371 42 ; 371 272 ; 39518216 ; 39580038 ;
Abstract
An apparatus for generating control signals of a microprocessor includes a memory, for example, a pattern holding register storing an arbitrary bit pattern. The holding register can be loaded by software. A shift register is connected to receive the bit pattern from the pattern register. An output pin of the microprocessor receives each bit of the arbitrary bit pattern, directly, or indirectly via a bus interface unit, at a rate determined by a clock signal to generate control signals for arbitrary external devices.