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:
Nov. 09, 1999
Filed:
Jun. 04, 1998
Olivier Perron, Franconville, FR;
Alcatel, Paris, FR;
Abstract
Apparatus for patching a control program in a processor which executes a control program stored in non-volatile memory, and which has access to a plurality of patch routines. The apparatus comprises storage for storing trap addresses each of which is associated with the address of a patch routine; a comparator for comparing the address of the program counter with the patch addresses; and a diverter for responding to a positive comparison by diverting the control program to the patch routine whose address is associated with the trap address that gave rise to the positive comparison. Each trap address is associated with one of the possible operating states of the processor. The apparatus includes a selector for selecting a predetermined number of trap addresses from the trap addresses stored in the storage so as to select trap addresses that are associated with the current operating state of the processor. The comparator compares the address in the program counter with the selected addresses only.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile