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:
Apr. 30, 1991
Filed:
May. 03, 1989
Applicant:
Inventors:
Erich Plies, Munich, DE;
Joerg Quincke, Munich, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ; H04N / ; H04N / ;
U.S. Cl.
CPC ...
250342 ; 250341 ; 2503581 ; 2503601 ; 250347 ;
Abstract
Since known methods for investigating latch-up propagation have only a comparatively slight chronological resolution, a method and apparatus are proposed in which latch-up is periodically triggered and the intensity of the infrared radiation emanating from an integrated circuit is sensed at a plurality of measuring points that cover the circuit in a grid-like manner in order to respectively determine, at the measuring points, within what time span the intensity of the infrared radiation reaches a threshold, and to respectively register a measured value representing the time interval in a location-dependent manner.