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. 06, 1988
Filed:
Apr. 22, 1987
Applicant:
Inventor:
Timothy J Ridgers, Alpharetta, GA (US);
Assignee:
Sangamo Weston, Inc., Norcross, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03C / ; G06G / ;
U.S. Cl.
CPC ...
328142 ; 307261 ; 307490 ; 307493 ; 328160 ;
Abstract
A sequence of samples of a time varying signal is multiplied by respective, corresponding, multiplicands corresponding to values of a separate signal. The multiplicands are provided as ratios of capacitances switched into and out of a circuit between the input time varying voltage and an accumulating integrator. The arrangement is used to provide multiplication of a time varying signal by corresponding amplitudes of a sinusoid without requiring generation of a sinusoid. The arrangement is used for sampling, detecting signals utilizing a simulated local oscillator signal, and for generation of an arbitrary time varying function.