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:
Oct. 12, 1999
Filed:
May. 30, 1997
Marwan A Fawal, Santa Clara, CA (US);
Burton B Lo, San Francisco, CA (US);
3Com Corporation, Santa Clara, CA (US);
Abstract
A system comprising the following elements. An ethernet controller circuit for generating ethernet data signals. An isolation circuit coupled to receive the ethernet data signals and for generating ethernet output signals. The ethernet output signals including primarily a first sine wave signal, a second sign wave signal, and a set of signals. The first sine wave signal is at a frequency approximately equal to the frequency of the ethernet data signals. The second sine wave signal is at a frequency approximately one half the frequency of the first sine wave signal. The third set of signals is for transitioning between said first sine wave signal and said second sine wave signal. In this embodiment, the high frequency components of the output signals is significantly reduced, which results in reduced electromagnetic interference from the system.