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:
Aug. 02, 1983
Filed:
Oct. 06, 1981
Klaus Wintzer, Munich, DE;
Peter Picard, Taufkirchen, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
A digital-analog converter functioning according to the .mu.-law wherein a sequence control receives an input digital signal and controls the position of a plurality of switches so as to selectively apply positive or negative voltages to a main resistor network and an auxiliary resistor network and further controls the plurality of switches in such networks for either grounding or connecting to an operational amplifier the outputs of said main and auxiliary resistor networks so as to produce an analog output signal. The invention is useful in time division multiplex telephone systems with digital subscriber stations, for example.