Method and apparatus for power management in an electronic...

H - Electricity – 02 – J

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H02J 7/00 (2006.01) G01R 31/36 (2006.01) G03B 15/05 (2006.01)

Patent

CA 2596748

An electronic device and method for power management in an electronic device is provided. In an embodiment, the electronic device includes the functionality of a personal digital assistant, wireless email paging and a camera with a flash that is operated via self- contained power supply in the form of a battery. The device also includes a supervisor circuit which causes the device to enter sleep mode, or disables the device, or certain features of the device, if the battery level falls below a certain threshold. A method in accordance with an embodiment performs, in response to a request to fire the flash, a pre- flash test which is selected so as to not trip the supervisor circuit. The battery level is examined as a consequence of performing the pre-flash test and, if the battery level as so examined meets certain criteria, then the full flash is either permitted to proceed. If the battery level does not meet the criteria, the full flash is not permitted to proceed.

Appareil électronique et méthode de gestion de la consommation d'un appareil électronique. Dans un mode de réalisation, l'appareil électronique comprend les fonctions d'assistant numérique personnel, d'avis de courriel par radiomessagerie et d'appareil photo, lequel comporte un flash qui fonctionne grâce à une source d'alimentation autonome, en l'occurrence une batterie. L'appareil comprend également un circuit superviseur qui le fait entrer en veille, le désactive ou en désactive certaines fonctions si la charge de la batterie descend sous un seuil donné. Méthode, selon un mode de réalisation, qui réagit à une demande de déclenchement du flash en effectuant un test avant flash de façon à ne pas déclencher le circuit de supervision. La charge de la batterie est contrôlée par l'exécution du test avant flash; si la charge contrôlée de la batterie respecte certains critères, alors le flash est déclenché à pleine puissance. Si la charge de la batterie ne respecte pas ces critères, le flash ne se déclenche pas à pleine puissance.

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