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:
Sep. 21, 1993
Filed:
May. 31, 1990
Applicant:
Inventors:
Jeffrey A Minnick, Lexington, KY (US);
Warren J Spina, Lexington, KY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395425 ; 395550 ; 364D / ; 3642434 ; 3642514 ; 364260 ; 3642601 ; 3642602 ; 3642702 ; 3642709 ; 3642715 ;
Abstract
A clock circuit (12) normally couples clock pulses to a microprocessor (11), which is capable of accessing memory devices (13,14) having different access times. Access of a 'slow' memory device 14 is detected by the clock circuit, and in response thereto, one or more clock pulses are not coupled to the microprocessor. This suspends operation of the microprocessor for a suitable amount of time so that the microprocessor reads valid data from the slow memory device. The number of clock pulses blocked from reaching the microprocessor can be set in a delay circuit (28) in the clock circuit.