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:
Nov. 27, 1990
Filed:
Mar. 30, 1989
Applicant:
Inventors:
Masato Abe, Sagamihara, JP;
Fumitaka Asami, Kunitachi, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03M / ;
U.S. Cl.
CPC ...
341 93 ; 341127 ;
Abstract
A code converter includes an extraction device for extracting a reference level from a binary-coded input signal, which is offset at a predetermined voltage level and which varies arbitrarily with the same polarity as the voltage level. A twos-complement conversion device, connected to the extraction device, converts the reference level into a twos-complement value. A creation device, connected to the extraction device and the twos-complement conversion device adds an output signal of the twos-complement conversion device and the binary-coded input signal, thereby producing a bipolar binary-coded output signal to which a polarity bit is added.