Wireless communication system and data storage medium
First Claim
1. A wireless communication method for performing wireless transmitting and receiving between an external device and a storage medium, said method comprising:
- receiving in said storage medium through wireless transmission an inquiry signal comprising a prescribed carrier signal having a prescribed carrier frequency;
converting in said storage medium said inquiry signal to operating power to power elements operable within said storage medium;
generating from said inquiry signal a clock signal, said clock signal being phase synchronous with said inquiry signal;
clocking a microprocessor provided in said storage medium based upon said clock signal and powering said microprocessor by said operating power;
storing in a storage provided in said storage medium transmission data under control of said microprocessor;
under control of said microprocessor, reading said transmission data from said storage;
under control of said microprocessor, spread spectrum encoding said transmission data read by a reader; and
transmitting from said storage medium to said external device a signal comprising the spread spectrum encoded transmission data.
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Accused Products
Abstract
A wireless communication system performs wireless transmitting and receiving of data between first and second communication devices. The device transmits from the first communication device to the second communication device a prescribed signal by a prescribed carrier signal having a prescribed carrier frequency. The prescribed signal transmitted from the first communication device is received in the second communication device. The device generates in the second communication device a signal of prescribed frequency which is phase synchronous with the prescribed carrier signal. Transmission data is spread spectrum modulated using the signal of prescribed frequency generated in the generating step. The spread spectrum modulated signal is transmitted from the second communication device to the first communication device. The first communication device receives the spread spectrum modulated signal transmitted from the second communication device.
71 Citations
12 Claims
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1. A wireless communication method for performing wireless transmitting and receiving between an external device and a storage medium, said method comprising:
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receiving in said storage medium through wireless transmission an inquiry signal comprising a prescribed carrier signal having a prescribed carrier frequency; converting in said storage medium said inquiry signal to operating power to power elements operable within said storage medium; generating from said inquiry signal a clock signal, said clock signal being phase synchronous with said inquiry signal; clocking a microprocessor provided in said storage medium based upon said clock signal and powering said microprocessor by said operating power; storing in a storage provided in said storage medium transmission data under control of said microprocessor; under control of said microprocessor, reading said transmission data from said storage; under control of said microprocessor, spread spectrum encoding said transmission data read by a reader; and transmitting from said storage medium to said external device a signal comprising the spread spectrum encoded transmission data. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A storage medium for receiving and responding to wireless transmissions from an external device, said storage medium comprising:
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a receiver for receiving through wireless transmission an inquiry signal comprising a prescribed carrier signal having a prescribed carrier frequency; a first generator for converting said inquiry signal to operating power to power elements operable within said storage medium; a second generator generating from said inquiry signal a clock signal, said clock signal being phase synchronous with said inquiry signal; a controller comprising a microprocessor, said microprocessor being clocked based upon said clock signal and being powered by said operating power; a storage for storing transmission data under control of said microprocessor; a reader for reading said transmission data from said storage under control of said microprocessor; a spread spectrum encoder controlled by said microprocessor to spread spectrum encode said transmission data read by said reader; and a transmitter for transmitting to said external device a signal comprising the spread spectrum encoded transmission data. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification