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. 10, 1990
Filed:
May. 23, 1988
Victor G Mycynek, Des Plaines, IL (US);
Zenith Electronics Corporation, Glenview, IL (US);
Abstract
A highly accurate, inexpensive digital to analog converter requiring minimal accuracy in component values. A digital word is received serially, the least significant bit first. A voltage is stored on a capacitor at each bit, the value of the voltage being halfway between a reference voltage and the previously stored voltage, the reference voltage value depending on whether the bit is a logic '1' or '0'. In each case, the halfway point of the voltage difference is determined by coupling to the midpoint of a pair of resistive components having essentially the same value. The value of the stored voltage represents the analog value of the digital word. The process is preferably repeated for the same word and the two resulting final voltages is averaged to eliminate any effect of a slight difference in component values in a pair.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile