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:
Jul. 24, 2001
Filed:
Oct. 09, 1997
David L. Schell, Colorado Springs, CO (US);
Randolph Scott Crupper, Palmer Lake, CO (US);
Kurt W. Getreuer, Colorado Springs, CO (US);
Leonardus J. Grassens, Monument, CO (US);
David E. Lewis, Black Forest, CO (US);
Marvin B. Davis, Colorado Springs, CO (US);
Discovision Associates, Irvine, CA (US);
Abstract
An analog to digital circuit assembly for use in an optical information includes a circuit for multiplexing a reference voltage input of an analog to digital converter to produce alternating normalized and referenced digital outputs of a plurality of analog signal inputs at a rate controlled by a sampling clock which includes a switch including first and second inputs, an output, and a control input for alternately connecting the first and the second inputs to the output, the output being applied to the reference voltage input. An information detection device having multiple detection outputs and having at least one servo mechanism that controls operations on information being detected is provided in conjunction with a signal summing circuit, a direct current voltage reference, a control clock connected, a servo error signal circuit having a servo error signal output and multiple inputs, a sampling clock, and a processing circuit having an input connected to a digital output of the analog to digital converter and an output for controlling at the least one servo mechanism.