Abstract: The present invention discloses a CMOS image sensor single chip integrated with a RF transmitter utilizing CMOS technology. The invention integrates CMOS image sensor and RF transmitter in a single chip, which can transmit an image detected by the CMOS image sensor directly through the RF transmitter.

Abstract: An apparatus for eliminating noise is disclosed. The present invention includes a counter, which counts in a first direction when an input signal is active, and in a second direction otherwise. A determining device is used to determine a predetermined first threshold value, and assert an output signal while such value is reached. The present invention also includes a limiting device, which prevents the counter from counting beyond or below a predetermined limit value.

Abstract: The present invention is related to an input device controller having a photo coupler generating an induced current in response to a received quantum of light and using multi-stage, e.g. three-stage, dynamic impedances as an impedance match to obtain better frequency response and accurate identification of light-pass/light-shield state of the photo coupler. It also related to an input device controller using a reference voltage supply circuit including a constant current generator and an equivalent circuit to avoid the bad effect on the cursor shift control caused by the variation of the reference voltage.

Abstract: A multiplexing input device is to be used in combination with an integrated computer mouse control circuit and includes a movement sensor unit and a key input control unit. The movement sensor unit and the key input control unit are connected to four input terminals of a controllable variable impedance unit. A timing control circuit has a sensor activating output which intermittently operates the movement sensor unit. The timing control circuit controls the resistance of the variable impedance unit according to the input signal to be sampled. A comparator unit is connected to the output terminals of the variable impedance unit. The output signals of the comparator unit are received by a demultiplexing unit. The demultiplexing unit has a first set of data outputs corresponding to the movement signals from the movement sensor and a second set of data outputs corresponding to the status of press keys on the key input control unit.