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:
Dec. 18, 1984
Filed:
Mar. 09, 1983
Lewin T Baker, Schenectady, NY (US);
Paul G Huber, West Warwick, RI (US);
General Electric Company, Schenectady, NY (US);
Abstract
A clear channel detector for use in a binary digital data transmission system in which collisions are possible between simultaneously transmitting stations all connected to a common transmission medium. The detector receives the output from each of a pair of different binary symbol detectors in the station receiver. The voltage difference between the binary symbol detector outputs is amplified, and the resulting bipolar voltage is converted to an absolute amplitude. After further amplification, a threshold adjustment is provided at a trigger subcircuit having at least one output signal indicating the presence of a clear transmission channel which is not presently in use.