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:
Jul. 11, 2006
Filed:
Mar. 31, 2003
Applicants:
James Kralik, Shanghai, CN;
Gary Rogalski, Richmond, CA;
Inventors:
James Kralik, Shanghai, CN;
Gary Rogalski, Richmond, CA;
Assignee:
VTech Telecommunications Limited, Tai Po, HK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/38 (2006.01); H04M 1/00 (2006.01); H04M 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device configured to draw current from one of a PSTN source and a battery source depending on a mode of operation of the device is disclosed. In a preferred embodiment, the device includes a circuit that is configured to draw current from the PSTN source during a first condition and from the battery source during a second condition. Preferably, the circuit is defaulted to draw current from the battery source. The first condition can be associated with an off-hook condition. The second condition can be associated with an on-hook condition.