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:
Nov. 06, 1990
Filed:
Apr. 20, 1987
John A Olmstead, Somerville, NJ (US);
Salomon Vulih, Somerville, NJ (US);
Other;
Abstract
The output of a digital-to-analog (D/A) converter is coupled to the input of a filter. The D/A converter is initialized each time a new digital word is applied to the D/A converter for conversion, whereby each data conversion cycle (T.sub.D) includes an initialization interval (T.sub.I) followed by a conversion interval (T.sub.C). During T.sub.I the output of the D/A converter is driven to a reference level and during T.sub.C to the output of the D/A converter corresponds to the value of the input signal. The input section of the filter stores the D/A output just prior to initialization and, for during T.sub.I, coupling the stored value within the filter for processing while inhibiting the coupling to the filter of the reference level present at the D/A output.