Bi-directional power control
First Claim
1. A communication card having an on state and an off state and electrically connectable to an electronic device, the communication card comprising:
- a battery;
a modem configured to be powered by at least one of said battery and an external source of power;
an on/off button;
a connector via which the communication card electrically connects to an electronic device;
a voltage level shifter to shift voltage in accordance with a voltage difference between said battery and a battery of the electronic device; and
a power manager configured to;
detect a first wakeup event when the communication card is in the off state and when said on/off button is pressed to turn on the communication card;
in response to the first wakeup event, cause power to be provided to said modem;
detect a second wakeup event when the communication card is in the off state, the second wakeup event according to a wakeup signal received over said connector from the electronic device;
in response to the second wakeup event, cause power to be provided to said modem; and
automatically cause power to be provided to said modem after lapse of a predetermined period of time during which the communication card is connected to the electronic device.
3 Assignments
0 Petitions
Accused Products
Abstract
An electrical circuit for bi-directional power control between two devices, including a mobile communication card, an electronic device that connects to the communication card, the electronic device being either (i) a host device that operates independently of the communication card and also interoperates with the communication card, or (ii) a jacket for the communication card, wherein the jacket is a passive device that does not operate independently of the communication card, and circuitry connecting the mobile communication card with the electronic device, including a device on/off button operative to power the electronic device on and off, and a switch, wherein the circuitry uses a single connection line connecting the communication card, the electronic device, the device on/off button, and the switch, to enable the electronic device to automatically power the communication card on and off using the switch, in response to the electronic device being respectively powered on and off.
46 Citations
10 Claims
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1. A communication card having an on state and an off state and electrically connectable to an electronic device, the communication card comprising:
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a battery; a modem configured to be powered by at least one of said battery and an external source of power; an on/off button; a connector via which the communication card electrically connects to an electronic device; a voltage level shifter to shift voltage in accordance with a voltage difference between said battery and a battery of the electronic device; and a power manager configured to; detect a first wakeup event when the communication card is in the off state and when said on/off button is pressed to turn on the communication card; in response to the first wakeup event, cause power to be provided to said modem; detect a second wakeup event when the communication card is in the off state, the second wakeup event according to a wakeup signal received over said connector from the electronic device; in response to the second wakeup event, cause power to be provided to said modem; and automatically cause power to be provided to said modem after lapse of a predetermined period of time during which the communication card is connected to the electronic device. - View Dependent Claims (2, 3, 4, 5)
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6. An electronic device having an on state and an off state and electrically connectable to a communication card, the electronic device comprising:
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a battery; a controller configured to be powered by at least one of said battery and an external source of power; an on/off button; a connector via which the electronic device electrically connects to a communication card; a voltage level shifter to shift voltage in accordance with a voltage difference between said battery and a battery of the communication card; and a power manager configured to; detect a first wakeup event when the electronic device is in the off state and when said on/off button is pressed to turn on the electronic device; in response to the first wakeup event, cause power to be provided to said controller; detect a second wakeup event when the electronic device is in the off state, the second wakeup event according to a wakeup signal received over said connector from the communication card; in response to the second wakeup event, cause power to be provided to said controller; and automatically generate a wakeup event to power on the communication card, after lapse of a predetermined period of time during which the communication card is electrically connected to the electronic device while the electronic device is in the on state. - View Dependent Claims (7, 8, 9, 10)
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Specification