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. 26, 1987
Filed:
Jul. 10, 1985
Alan R Henderson, Carlsbad, CA (US);
John P Sheppard, Carlsbad, CA (US);
Abstract
An up-down counter is fed pulses generated manually and/or automatically from either or any of two or more command sources. Gating circuitry ahead of the up-down counter may be used to enable counts from only one source at a time. The output of the counter represents the magnitude of the parameter to be controlled. The purpose is to transfer control of a parameter to any of several command sources without changing the value of the parameter, thereby achieving 'stepless' switching. Only one counter is needed regardless of the number of command sources, no synchronizing circuitry is required, and switching is provided with no steps or delays. Multiple command sources may be active simultaneously when command source input gating is not used ahead of the up-down parameter magnitude counter.