Methods, devices, and systems where an accessory controls power delivery from a host device to the accessory through an accessory port
First Claim
1. A method of triggering a host device with an accessory port to provide power to an accessory coupled to the accessory port, comprising:
- receiving a wireless signal provided by the host device at the accessory while the accessory is not being powered with the accessory port by the host device;
rectifying the wireless signal into a rectified signal at the accessory;
charging a power source of the accessory with the rectified signal;
using power from the power source, manipulating by the accessory a voltage state of a first electrical connection at the accessory port to trigger the host device to begin providing power via a second electrical connection.
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Accused Products
Abstract
An accessory controls power delivery from a host device to the accessory by receiving and rectifying a wireless signal into an electrical voltage that operates an electronic switch. The electronic switch sets a voltage state of an electrical connection to the host device that triggers the host device to begin providing power. The accessory may no longer receive power from the host device once the wireless signal stops. The host device may be the source of the wireless signal and may thereby control whether the accessory draws power by operation of the wireless signal. Alternatively, the accessory may include a controller that once powered on by the host device as a result of the rectification of the wireless signal, maintains the same or a different electronic switch in a closed state to maintain power delivery from the host device until the controller is triggered to allow the electronic switch to open.
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Citations
26 Claims
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1. A method of triggering a host device with an accessory port to provide power to an accessory coupled to the accessory port, comprising:
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receiving a wireless signal provided by the host device at the accessory while the accessory is not being powered with the accessory port by the host device; rectifying the wireless signal into a rectified signal at the accessory; charging a power source of the accessory with the rectified signal; using power from the power source, manipulating by the accessory a voltage state of a first electrical connection at the accessory port to trigger the host device to begin providing power via a second electrical connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of triggering a host device with an accessory port to provide power to an accessory coupled to the accessory port, comprising:
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providing a first electronic switch of the accessory in a first state such that the accessory is not being powered by the host device; upon the first electronic switch changing to a second state, manipulating by the accessory a voltage on a first electrical connection at the accessory port to trigger the host device to begin providing power via a second electrical connection; and powering on a controller of the accessory from a second electrical connection at the accessory port once the first electrical connection is interconnected to a ground electrical connection at the accessory port. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An accessory that triggers a host device with an accessory port to provide power to the accessory when coupled to the accessory port, comprising:
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an antenna that receives a wireless signal provided by the host device; a rectifier that rectifies the wireless signals into a rectified signal; a power source that is charged by the rectified signal; a first electrical connection that controls whether the host device provides power to the accessory; a triggering electrical connection; and a first electronic switch coupled to the power source, to the first electrical connection, and to the ground electrical connection, such that upon the power source being charged and providing a voltage to the electronic switch, the electronic switch electrically interconnects the first electrical connection to the triggering electrical connection to trigger the host device to begin providing power to the accessory. - View Dependent Claims (18, 19, 20, 21)
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22. A system, comprising:
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an electronic host device that includes an accessory port having a first electrical contact, a second electrical contact, and a triggering electrical contact; an accessory that comprises; a plug having a first electrical connection, a second electrical connection, and a triggering electrical connection, the first electrical connection being electrically coupled to the first electrical contact, the second electrical connection being electrically coupled to the second electrical contact, and the triggering electrical connection being electrically coupled to the triggering electrical contact; an antenna that receives a wireless signal; a rectifier that rectifies the wireless signals into a rectified signal; a power source that is charged by the rectified signal; a first electronic switch coupled to the power source, to the first electrical connection, and to the triggering electrical connection, such that upon the power source being charged and providing a voltage to the electronic switch, the electronic switch electrically interconnects the first electrical connection to the triggering electrical connection to trigger the electronic host device to begin providing power to the accessory via the second electrical connection. - View Dependent Claims (23, 24, 25, 26)
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Specification