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. 04, 1998
Filed:
Jan. 14, 1997
Applicant:
Inventors:
Norbert D Ingram, Cary, NC (US);
Seung K Kim, Chapel Hill, NC (US);
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Primary Examiner:
Int. Cl.
CPC ...
H04B / ; H04M / ;
U.S. Cl.
CPC ...
455574 ; 455575 ; 455343 ;
Abstract
A circuit is disclosed for switching power to a battery operated device, particularly a portable radio transceiver. The power control circuit uses an on/off switch that remains in a fixed 'on' or 'off' position instead of using a momentary push button switch. The circuit allows powering down the radio to prevent deep discharging of the battery even though the switch remains in the 'on' position. Also, the circuit allows the radio to continue to be powered up under microprocessor control after the switch is placed in the 'off' position.