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:
Apr. 14, 1987
Filed:
Aug. 19, 1985
Applicant:
Inventor:
Hans-Joachim Grallert, Groebenzell, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
3403 / ; 332 / ; 375 27 ;
Abstract
A differential pulse code modulation coder has a pair of series connected arithmetic units connected to the input of a quantizer, with the output of the quantizer connected through a first multiplier to an input of the second arithmetic unit, and the output of the quantizer connected through an adder and further multiplier to the second input of the first arithmetic unit, the second input of said adder being derived from the output of said second multiplier, whereby greater internal calculation speed is realized.