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:
Dec. 15, 1981
Filed:
Oct. 11, 1979
Applicant:
Inventor:
Dale B Chapman, San Jose, CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
328150 ; 328132 ; 307236 ;
Abstract
A readout signal detection circuit comprises a data signal detector which senses changes in voltage of the signal waveform relative to signal peak amplitude; a threshold detector for sensing signal peak magnitudes that exceed a preset magnitude; a differentiator to locate signal peak position; and logic circuitry to test the validity of a linear readout signal applied to the detectors and the differentiator in parallel. A ramp timer provides a delay and fixed period during which the readout signal is checked for validity.