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:
Mar. 28, 1995
Filed:
Feb. 28, 1992
Applicant:
Inventor:
Roland Marbot, Versailles, FR;
Assignee:
Bull, S.A., Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ; H04Q / ; H04J / ;
U.S. Cl.
CPC ...
375 10 ; 370 13 ; 375257 ;
Abstract
The invention relates to tests for verifying the integrity of circuits (16) for serial bi-directional transmissions. These tests are capable of testing transceivers (12) operating a very high frequency without creating interference and consist in either leaving the serial output of the transceiver (12) disconnected from the line (L), or disconnecting (INF) its adaptation impedance, commanding the transmission of signals, and comparing the signals transmitted to the reception signals detected by the same transceiver. In a variant, the adaptation impedance of the transceiver of the remote station may be disconnected.