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. 25, 1977
Filed:
Mar. 09, 1976
Applicant:
Inventor:
Charles David Crawford, Burlington, NC (US);
Assignee:
Bell Telephone Laboratories, Incorporated, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
3403 / ;
Abstract
Signals representative of information bits are converted from one binary code, for example, Gray code, to another binary code, for example, conventional binary, and vice versa, by advantageously employing optical couplers in conjunction with buffer amplifiers. The optical couplers include light emitting diodes and associated phototransistors which are uniquely connected in circuit relationship with the outputs of the buffer amplifiers to effect the desired code conversions.