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:
Jan. 10, 1989
Filed:
May. 13, 1987
Van T Nguyen, Toulouse, FR;
Claude Chateignon, Toulouse, FR;
Georges Deschamps, Montreuil sous Bois, FR;
Bendix Electronics S.A., Toulouse, FR;
Abstract
The invention relates to the transmission of logic signals. The circuit comprises a port D connected to a line for the transmission of unipolar logic signals and a port (D+, D-) connected to a pair of wires for the transmission of differential logic signals. Current generators (T4, T5) send a positive differential signal when a unipolar 'low' logic signal is applied to port D. When the differential signal received at (D+, D-) must be transmitted on the D port by a 'low' level, the signal representing the low level remains higher than the voltage level V.sub.L1 below which the voltage generators are activated, in order to prevent any blockage of the circuit by looping of the signals within the circuit. Application to the multiplexing of the flow of data processed in an automobile vehicle.