DUAL MODE WIRELESS COMMUNICATIONS DEVICE
First Claim
1. A wireless communications device comprising:
- a battery configured to provide power to operate the wireless communications device in a first mode of operation;
a processing section coupled to the battery and configured to operate on battery power in the first mode of operation; and
an RF interface 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;
wherein 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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Accused Products
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.
73 Citations
30 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; a processing section coupled to the battery and configured to operate on battery power in the first mode of operation; and an RF interface 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; wherein the wireless communications device is configured to detect available RF power and enter the second mode of operation from the first mode of operation. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of communicating with a wireless communications device comprising:
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operating the wireless communications device in a first mode of operation using operating power supplied by a battery contained in the wireless communications device; detecting presence of an RF signal, and in response, operating the wireless communications device in a second mode of operation using operating power derived from the RF signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A wireless communication system comprising:
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a wireless device; and a base station having at least one network connection and an RF transceiver configured to generate an RF signal and communicate with the wireless device using backscatter communication; wherein the wireless device includes; a battery configured to provide power to operate the wireless device in a first mode of operation; a processing section coupled to the battery and configured to operate on battery power in the first mode of operation; and an RF interface configured to receive the RF signal from the base station and generate operating power for the wireless device from the RF signal in a second mode of operation; wherein the wireless device is configured to detect available RF power and enter the second mode of operation from the first mode of operation. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification