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. 28, 1999
Filed:
Jun. 02, 1998
Applicant:
Inventors:
Thomas Grey Beutler, Tustin, CA (US);
Raphael Rahamim, Orange, CA (US);
Assignee:
Conexant Systems, Inc., Newport Beach, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
327304 ; 327300 ;
Abstract
A transformer driver circuit connected to the primary or 'system' side of a transformer has a system clock connected to an input thereof the system clock having a frequency selected to constitute the desired clock frequency of a CODEC circuit located on the secondary or 'line' side of the transformer. A signal line is connected to a point on the secondary of the transformer so as to tap the system clock frequency, whereby both the system clock and the source voltage for the CODEC are derived from the transformer's secondary.