Structure of cordless mouse device

A wireless mouse device for inputting data into a computer comprising:

• a) a base board mouse pad having a first circuit adapted to be connected to the computer and including a carrier generator, an antenna driver amplifier connected to the carrier generator, a first front end radio frequency (RF) matching network connected to the antenna driver amplifier, a first transmit/receive antenna coupled to the front end RF matching network, a detector connected to the front end RF matching network, a filter amplifier connected to the detector, a comparator connected to the filter amplifier, a decoder connected to the comparator, a microprocessor coupled with the decoder and a communications interface device connected to the microprocessor and to the computer;
• and,
• b) a mouse device movable on the base board and having a roller ball, and an enclosure enclosing a second circuit including a second transmit/receive antenna, a second front end RF matching network, a rectification network coupled to the second transmit/receive antenna, a clock regulator connected to the second transmit/receive antenna, a power supply regenerator coupled to the clock regulator and to the rectification network, an encoder connected to the clock regulator, a signal modulator connected to the encoder, the power supply regenerator and to the second front end RF matching network, and a two-dimension displacement sensor connected to the encoder to sense movement of the roller ball, whereby electric power is supplied to the second circuit from the computer via the first and second transmit/receive antennas and whereby movement of the roller ball is converted into signals by the second circuit and transmitted to the first circuit via the first and second transmit/receive antennas to input data into the computer without wire connections between the mouse and the computer.