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.

Date of Patent:
Feb. 17, 1987

Filed:

Jun. 16, 1982
Applicant:
Inventors:

Shiro Ohishi, Hadano, JP;

Masatsugu Shinozaki, Hadano, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L / ;
U.S. Cl.
CPC ...
375 17 ; 375 20 ; 375 23 ; 375121 ;
Abstract

For transmitting binary data at a data transmission speed of F=1/[(N+1)T] bits/second, where N represents a value selected in accordance with a given transmission speed and T represents a predetermined constant period, a transmitter station sends out a bipolar signal on a transmission line for the period T (seconds) corresponding to one of the states of the binary data independent of the data transmission speed, while no data is sent out on the transmission speed, while no data is sent out on the transmission line for the period NT (seconds) as well as for a period corresponding to the other state of the binary data. In a receiving station, the binary states of the data are discriminatively determined from the bipolar signal received through the transmission line in accordance with the data transmission speed F, the data being converted to a unipolar signal such as NRZ signal.


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