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:
Feb. 18, 1997
Filed:
Mar. 16, 1995
Maurice Bellanger, Paris, FR;
U.S. Philips Corporation, New York, NY (US);
Abstract
A signal form synthesizer comprises a digital generator circuit (1) for generating the synthesis signal to produce a first series of digital samples which are representative of this signal and formed by binary words of N bits, and a digital-to-analog converter circuit (30) for producing an analog version of this signal. Furthermore, there is provided an assembly (40) for filtering in accordance with a band-pass characteristic curve the samples of the first series and for supplying to said digital-to-analog converter circuit (30) a second series of samples formed by binary words of N' bits, where N.gtoreq.N'. A negative feedback loop (45) subtracts the samples of the second series from the samples of the first series.