Dual mode wireless communications device
First Claim
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1. A wireless communications device comprising:
- a battery configured to provide power to operate the wireless communications device in a first mode of operation;
an RF interface configured to;
receive an RF signal; and
generate operating power for direct use by the wireless communications device from the RF signal in a second mode of operation; and
a processing section comprising one or more processors;
wherein the wireless communications device is configured to;
operate on battery power in the first mode of operation;
detect available RF power;
enter the second mode of operation from the first mode of operation, wherein, during the second mode of operation, the generated operating power is used for operation of the device; and
detect a fill state of a memory and, based on the fill state, change the processing section from the second mode to the first mode and conduct data transfer with the memory.
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Abstract
A wireless communications device includes a battery, a processing section coupled to the battery, and an RF interface. The battery is configured to provide power to operate the wireless communications device in a first mode of operation. The processing section is configured to operate on battery power in the first mode of operation. The RF interface is configured to receive an RF signal and generate operating power for the wireless communication device from the RF signal in a second mode of operation. The wireless communications device is configured to detect available RF power and enter the second mode of operation from the first mode of operation.
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Citations
29 Claims
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1. A wireless communications device comprising:
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a battery configured to provide power to operate the wireless communications device in a first mode of operation; an RF interface configured to; receive an RF signal; and generate operating power for direct use by the wireless communications device from the RF signal in a second mode of operation; and a processing section comprising one or more processors; wherein the wireless communications device is configured to; operate on battery power in the first mode of operation; detect available RF power; enter the second mode of operation from the first mode of operation, wherein, during the second mode of operation, the generated operating power is used for operation of the device; and detect a fill state of a memory and, based on the fill state, change the processing section from the second mode to the first mode and conduct data transfer with the memory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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operating a wireless communications device in a first mode of operation using operating power supplied by a battery connected to the wireless communications device; detecting presence of an RF signal; entering a second mode of operation from the first mode of operation; generating operating power from the RF signal for direct use by the wireless communications device, wherein, during the second mode of operation, the generated operating power is used for operation of the device; and detecting a fill state of a memory and, based on the fill state, changing a processing section of the wireless communications device from the second mode to the first mode and conducting data transfer with the memory. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A wireless communication system comprising:
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a base station having at least one network connection and an RF transceiver configured to generate an RF signal and communicate using backscatter communication; and a wireless device comprising; a battery configured to provide power to operate the wireless device in a first mode of operation; a processing section comprising one or more processors; and an RF interface configured to; receive the RF signal from the base station; and generate operating power for direct use by the wireless device from the RF signal in a second mode of operation; wherein the wireless device is configured to; operate on battery power in the first mode of operation; detect available RF power; enter the second mode of operation from the first mode of operation, wherein, during the second mode of operation, the generated operating power is used for operation of the device; and detect a fill state of a memory and, based on the fill state, change the processing section from the second mode to the first mode and conduct data transfer with the memory. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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Specification