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:
Jan. 08, 1985
Filed:
Sep. 29, 1982
Stuart F Daniels, Moorestown, NJ (US);
Siemens Corporation, Iselin, NJ (US);
Abstract
A system for on-line, concurrent self-testing of a computer is disclosed which is capable of checking the 'test kernel' of the computer; that is, the portion of the computer that must be fault-free in order for the computer to test itself with a self-test program. The test kernel includes the computer CPU, the ROM which contains the self-test program, and the intraboard data, address and control buses, bus drivers and multiplexers. The system operates in a transparent fashion to test the computer during its normal operation. The system includes a linear feedback shift register connected to control signal outputs of the CPU and thus determines whether the CPU produces the proper control signals during fetch and/or execution of each program instruction.