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:
Oct. 27, 1992
Filed:
Jan. 25, 1989
Applicant:
Inventor:
Jurgen Heitmann, Alsbach-Hahnlein, DE;
Assignee:
Robert Bosch GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
375 34 ; 341 50 ; 358141 ; 375 58 ;
Abstract
A pulse code modulation process converts an analog video signal into a digital signal to be passed through a recording or transmission channel. The digital signal includes a digital words of a given number of bits, and each digital word represents an amplitude level of the video signal. The digital words are allocated to a given set of graduated amplitude levels such that the sum ##EQU1## has a minimum value whereby