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:
Jun. 07, 1983
Filed:
Mar. 20, 1981
Applicant:
Inventors:
Assignee:
Thomson-CSF Telephone, Colombes, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
1791 / ;
Abstract
The connecting device according to the present invention comprises for a two wire to four wire converter which connects the reception channel of a private network to the public network via an amplifier, whose symmetrical outputs are connected to the public network by capacitors, the gain loss due to these capacitors being compensated by a second amplifier. For the transmission channel a third amplifier has inputs connected to the public network by capacitors and an output connected to one input of a fourth amplifier, whose other input is connected by a phase shifting network to the reception channel.