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:
Aug. 17, 2004
Filed:
Jun. 30, 2000
Earl A. Daughtry, Lawrenceville, GA (US);
Anthony T. Depoy, Dacula, GA (US);
ADC Telecommunications, Inc., Eden Prairie, MN (US);
Abstract
A reverse path signaling circuit is described which provides less noise and interruption when injecting signals upstream to a head end. The reverse path signaling circuit includes a low pass filter, a status monitor, and a common emitter amplifier. The common emitter amplifier has a emitter region which couples to the status monitor. The status monitor couples to the common emitter amplifier as a single-ended input to the to the emitter region. The status monitor injects status monitor signals into the emitter region for passing the status monitor signals upstream to a head end. The low pass filter is coupled to another input on the common emitter amplifier. An output from the common emitter amplifier is taken at a collector region. The reverse path signaling circuit of the present invention does not require the use of a directional coupler as part of the circuit. Systems and methods are further included within the scope of the present invention.