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. 23, 1980
Filed:
Oct. 05, 1978
William L Elder, Richmond, CA (US);
Andros Incorporated, Berkeley, CA (US);
Abstract
A method and apparatus are described for developing a series of synchronizing pulses related to a series of input pulses of variable amplitude above a background noise level. A first signal is developed proportional to the derivative of the rising or falling portion (or both) of each of the input pulses. A second signal is developed related to the first signal and having a decay characteristic such that the amplitude of the second signal becomes equal to the amplitude of the first signal at a threshold point which is proportional to the amplitude of the first signal. The synchronizing pulses are developed related to respective threshold points whereby the phase of the synchronizing signal is not dependent on the amplitude of the input pulses.