System and method for delayed application processor initialization during wireless charging
First Claim
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1. A method of operating a device, comprising:
- detecting power wirelessly received at a first power level from a power transmitter via a receiver circuit coupled to a magnetic field generated by the power transmitter;
wirelessly transmitting, in response to determining that the first power level is below a threshold value, a message to the power transmitter, the message comprising a request for the power transmitter to increase a level of power transmitted;
periodically detecting a level of power wirelessly received at the receiver circuit from the power transmitter once the message is transmitted;
delaying a boot sequence of a controller of the device if the level of power wirelessly received at the receiver circuit from the power transmitter is less than the threshold value;
determining that the level of power wirelessly received at the receiver circuit from the power transmitter has increased above the first power level to or above the threshold value; and
initializing the boot sequence of the controller in response to the determining that the level of power wirelessly received has increased above the first power level to or above the threshold value, wherein the controller is powered by the power wirelessly received at the receiver circuit from the power transmitter.
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Abstract
A system and method providing for delayed initialization of a device in a wireless charging environment. In certain aspects, a device is configured to detect power wirelessly received from a power transmitter. The device may further wirelessly transmit a message to the power transmitter in response to the received power, further determining that a power level of the received power has been adjusted in response to the message. In response to the determining the power level has been adjusted, a controller that is powered by the adjusted power level may be initialized.
20 Citations
26 Claims
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1. A method of operating a device, comprising:
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detecting power wirelessly received at a first power level from a power transmitter via a receiver circuit coupled to a magnetic field generated by the power transmitter; wirelessly transmitting, in response to determining that the first power level is below a threshold value, a message to the power transmitter, the message comprising a request for the power transmitter to increase a level of power transmitted; periodically detecting a level of power wirelessly received at the receiver circuit from the power transmitter once the message is transmitted; delaying a boot sequence of a controller of the device if the level of power wirelessly received at the receiver circuit from the power transmitter is less than the threshold value; determining that the level of power wirelessly received at the receiver circuit from the power transmitter has increased above the first power level to or above the threshold value; and initializing the boot sequence of the controller in response to the determining that the level of power wirelessly received has increased above the first power level to or above the threshold value, wherein the controller is powered by the power wirelessly received at the receiver circuit from the power transmitter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An apparatus configured for performing the delay of an initialization sequence of a device, that apparatus comprising:
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a power management circuit operably connected to a wireless power receiver circuit and configured to detect power wirelessly received at a first power level from a power transmitter via the wireless power receiver circuit coupled to a magnetic field generated by the power transmitter; and a transceiver configured to, in response to determining that the first power level is below a threshold value, wirelessly transmit a message to the power transmitter, the message comprising a request for the power transmitter to increase a level of power transmitted, the power management circuit further configured to; periodically determine a level of power wirelessly received at the wireless power receiver circuit from the power transmitter once the message is transmitted; delay a boot sequence of a controller of the device if the level of power wirelessly received at the receiver circuit from the power transmitter is less than the threshold value; determine that the level of power wirelessly received at the receiver circuit from the power transmitter has increased above the first power level to or above the threshold value; initialize the boot sequence of the controller in response to the determining that the level of power wirelessly received at the receiver circuit from the power transmitter has increased above the first power level to or above the threshold value, the controller configured to be powered by the power wirelessly received at the receiver circuit from the power transmitter. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for performing the delay of an initialization sequence of a device, the apparatus comprising:
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means for controlling the device; means for detecting power wirelessly received at a first power level from a power transmitter via a means for receiving wireless power coupled to a magnetic field generated by the power transmitter; means for wirelessly transmitting, in response to determining that the received power level is below a threshold value, a message to the power transmitter, the message comprising a request for the power transmitter to increase a level of power transmitted; means for periodically detecting a level of power wirelessly received at the receiving means from the power transmitter once the message is transmitted; means for delaying a boot sequence of the controlling means of the device if the level of power wirelessly received at the receiving means from the power transmitter is less than the threshold value; means for determining that the level of power wirelessly received at the receiving means from the power transmitter has increased above the first power level to or above the threshold value; and means for initializing the boot sequence of the controlling means in response to determining that the level of power wirelessly received at the receiving means from the power transmitter has increased above the first power level to or above the threshold value, wherein the controlling means is powered by the power wirelessly received at the receiving means from the power transmitter. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A method of operating a wireless power receiver device, comprising:
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initializing an application processor based on a first initialization sequence of signals in response to detecting power received via a wired power source; and initializing the application processor based on a second initialization sequence of signals, different than the first initialization sequence of signals, in response to detecting power wirelessly received from a power transmitter, wherein a level of power received from the power transmitter is periodically detected at the wireless power receiver device, and the initializing based on the second initialization sequence of signals is delayed based at least in part on the periodic detecting if the level of power wirelessly received at the receiver circuit from the power transmitter is less than a threshold value, such that the application processor is not initialized based on the second initialization sequence of signals until the level of power of the power wirelessly received from the power transmitter increases to or above the threshold value. - View Dependent Claims (25, 26)
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Specification