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. 18, 1989
Filed:
Nov. 14, 1988
Robert M Landgraf, Woodland Park, CO (US);
Johnie L Hancock, Colorado Springs, CO (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
Disclosed is a circuit for maintaining a constant effective hysteresis at the input to a trigger comparator of an oscilloscope for the purpose of preventing double triggering due to false triggers. A microprocessor tracks the trigger amplifier gain control inversely relative to the vertical vernier amplifier gain control via digital-to-analog converters at the input to each gain control. Such tracking serves to adjust the trigger signal inversely relative to the on-screen signal such that a constant hystersis is maintained.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile