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:
Sep. 28, 1999
Filed:
Oct. 31, 1997
Elie Georges Khoury, Gilbert, AZ (US);
Karl Heinz Mauritz, Mesa, AZ (US);
VLSI Technology, Inc., San Jose, CA (US);
Abstract
An integrated circuit driver drives a differential signal over a communication cable, such as a twisted-pair cable. The integrated circuit driver includes a differential pre-driver that receives an input signal having an about 50% duty cycle and produces an amplified differential signal that swings between a power rail level and a ground level. A signal conditioner circuit receives the amplified differential signal and outputs a conditioned differential signal. The conditioned differential signal swings between the power rail level and an intermediate power level. The integrated circuit driver further includes an output driver that receives the conditioned differential signal that swings between the power rail level and the intermediate power level. The output driver produces a differential output signal that is communicated to the communication cable. The differential output signal has an about zero signal crossing and maintains the about fifty percent duty cycle.