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:
Mar. 24, 1981
Filed:
Aug. 07, 1978
Colin W Edwards, Lightwater, GB;
Hughes Microelectronics Limited, Glenrothes, GB;
Abstract
One disclosed embodiment of the improved digital to analog converters in accordance with the invention comprises means for producing a first series of pulses whose average value is representative of a first group of the bits of an applied digital signal; means for producing a second series of pulses whose average value exceeds that of the first series of pulses by a preselected fixed amount; means for filtering the first and second series of pulses; and means for alternately applying the filtered first or second series of pulses to a smoothing circuit such that the percentage of the time respective ones of said filtered series of pulses are applied to the smoothing circuit is proportional to the value of the remaining bits of the applied digital signal. The output from the smoothing circuit is a direct voltage signal which is representative of the applied digital signal.