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:
Jan. 09, 1990
Filed:
May. 01, 1989
Hans-Juergen Mattausch, Brunnthal-Faistenhhar, DE;
Fred Matthiesen, Munich, DE;
Matthias Schoebinger, Munich, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
An arrangement for DPCM coding with high data rate. In a DPCM coder, wherein respective prediction values (s) are subtracted from digitized picture element signals (s), the difference signals that result represent the prediction error .DELTA. supplied to a circuit element for cutputting a quantization error (11) pertaining to a difference signal. In a following adder, quantization errors (q) are added to the prediction errors (.DELTA.), whereby the quantized prediction error (.DELTA.q) can be taken at the output of the following adder. For forming the reconstructed picture element signal (s.sub.R), the quantization error (q) is added to the current picture element signal (s) in a first adder and is supplied to a first subtraction means via a predictor. In an embodiment of the circuit, a DPCM structure that has a shortest possible critical path for a DPCM structure that is composed of a quantizer, of an addition and of a register can be produced by dividing the predictor upon insertion or removal of individual registers.