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:
May. 08, 1990
Filed:
Feb. 29, 1988
James R Clinton, Seattle, WA (US);
Other;
Abstract
An apparatus for displaying analog signatures of an electronic device is attached to the electronic device and periodically subjects the electronic device to one, two, three or four selected test conditions. The responses of the electronic device to each of the test conditions are received as a pair of response signals, which constitute an analog signature of the electronic device. The two signals in each signature are respectively used to drive horizontal and vertical deflections of a CRT, which causes the signatures corresponding to each of the selected test conditions to be displayed simultaneously. If desired, the apparatus can be attached to a second electronic device, the selected test conditions alternately applied to the two devices, and the corresponding signatures alternately displayed on the CRT. This allows comparisons of the two electronic devices to be readily made.