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:
Mar. 25, 2014
Filed:
Nov. 08, 2007
Alistair G. Morfey, Cambridge, GB;
Karl Leighton Swepson, Cambridge, GB;
Neil Edward Johnson, Cambridge, GB;
Martin David Cooper, Cambridge, GB;
Alan Mycroft, Cambridge, GB;
Alistair G. Morfey, Cambridge, GB;
Karl Leighton Swepson, Cambridge, GB;
Neil Edward Johnson, Cambridge, GB;
Martin David Cooper, Cambridge, GB;
Alan Mycroft, Cambridge, GB;
Cambridge Consultants Ltd., , GB;
Abstract
A data processing apparatus comprises a processor constructed to operate under control of a sequence of program instructions selected from a predetermined instruction set; master circuitry to request access to storage locations of the processor; an interface circuit to provide an interface for an external apparatus to signal a request for access to the storage locations and an interface for the master circuitry to signal a request for access to the storage locations; and control to provide access between the storage locations and the interface circuit in response to the request only at predetermined points in execution of the stored program, the control being operable to fix periods of time for providing such access relative to the sequence of program instructions such that execution timing of the stored instructions is independent of whether a request is supplied to the interface.