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:
Aug. 07, 1990
Filed:
Aug. 25, 1987
Applicant:
Inventor:
Tatuo Yokoyama, Nara, JP;
Assignee:
Sharp Kabushiki Kaisha, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375-7 ; 375 36 ; 307475 ;
Abstract
A communication interface for connection to a communication apparatus provided with a balanced-type interface circuit includes a circuit for outputting a constant voltage approximately at the middle of the voltage level of transmitted data signals and is adapted to transmit to a balanced-type receiver contained in the communication apparatus a data signal as one input and the constant voltage from the constant-voltage circuit as another input.