RFID-based input device

摘要

An input device for use with a computer system includes: a pad and a portable unit operating as a computer mouse. The pad includes: a first antenna providing power to the portable unit, a radio frequency transmitter, a radio frequency receiver, a data link between the pad and the computer system, and an array of radio frequency antennas used for tracking a location of the portable unit. The portable unit includes at least one mouse antenna reflecting the radio frequency signals from the pad. The reflected radio frequency signals are used to estimate a location of the portable unit with respect to the array of radio frequency antennas in the pad.

主权项

1. An input device for use with a computer system, the input device comprising:
a pad comprising:
a first antenna providing power to a portable unit operating as a computer mouse;a radio frequency transmitter;a radio frequency receiver;a data link transferring data between the pad and the computer system; andan array of radio frequency antennas transmitting a radio frequency signal and receiving a corresponding radio frequency signal reflected by an at least one mouse antenna used for tracking a location of the portable unit; and the portable unit comprising the at least one mouse antenna reflecting the radio frequency signals; and wherein the reflected radio frequency signals are used to estimate a location of the portable unit with respect to the array of radio frequency antennas in the pad.