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:
May. 18, 2004
Filed:
Jan. 05, 2001
Gary L. Christopher, Fox River Grove, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A communication system ( ) includes a control unit ( ) electronically coupled to a pushbutton switch ( ). The control unit ( ) includes a wake-up circuit ( ) having a signal generator ( ) and a signal detector ( ). The signal generator ( ) generates a digital pulse signal ( ) having a predetermined amplitude ( ) and a predetermined duration ( ) for receipt by the pushbutton switch ( ). The signal detector ( ) monitors the digital pulse signal ( ) to determine whether the pushbutton switch ( ) is actuated or not actuated. The communications system ( ) maintains a low power consumption mode responsive to determining when the pushbutton switch ( ) is not actuated, and enables a normal power consumption mode responsive to determining when the pushbutton switch ( ) is actuated.