Primax Electronics Ltd.

Transpacific Plasma, LLC

Chin-Lung Lai

Chun-Nan Su

Chien-Nan Lin

Chih-Wen Su

Chen-Ming Chang

Tzu-Chiang Shih

Chien-Ming Su

Yi-Guang Chen

Yuan-Lan Yang

An automatic frequency hopping method is provided for use with a wireless device. The wireless device could transmit data in two or more communication frequency bands. According to the counts of successful data transmission in respective communication frequency bands, the reasons of communication failure are analyzed. According to the reasons of communication failure, the automatic frequency hopping method discriminates whether a frequency hopping procedure is performed. Since the frequency hopping procedure is performed when a proper frequency hopping condition is satisfied, the automatic frequency hopping method could achieve the power-saving purpose and avoid the wireless communication interference with other wireless devices.

Automatic frequency hopping method for use with wireless device

The present invention relates to a keyboard device. The keyboard device includes a base, a main circuit board, a base cover, a touching membrane switch, a touching thin plate, an upper cover and a plurality of keys. The touching membrane switch is activated to implement a predefined hot key function so as to reduce fabricating cost.

Keyboard device

The present invention relates to a voltage detecting circuit for detecting a voltage range of a power source. The voltage detecting circuit includes a micro controlling unit, a boost circuit and a plurality of divider resistors. The micro controlling unit includes a general input/output port and a controlling input/output port. The boost circuit provides a constant voltage. A judgment voltage is obtained according to the divider resistors, the constant voltage and a voltage of the power source. A digital level signal is issued by the general input/output port according to the judgment voltage. In response to the digital level signal, the micro controlling unit generates a corresponding prompt associated with the voltage status of the power source.

Voltage detecting circuit

A data transmission method for use with a wireless mouse includes the following steps. Firstly, a mouse displacement data including a horizontal displacement and a vertical displacement is periodically transmitted from a wireless signal emitter to a wireless signal receiver in every wireless transmission time interval T. Then, the horizontal displacement and the vertical displacement of the mouse displacement data are partitioned to acquire plural horizontal sub-displacements and plural vertical sub-displacements, respectively. Afterwards, one of the plural horizontal sub-displacements and one of the plural vertical sub-displacements are periodically transmitted from the wireless signal receiver to the computer system in every wired transmission time interval T. By the data transmission method, the wired report rate is increased without largely increasing power consumption, and the moving trajectory of the wireless becomes smoother.

Data transmission method for use with wireless mouse

An automatic mouse charging system includes a charger plate and an automatically chargeable mouse. The charger plate includes an audio signal emitter for emitting an audio signal and a charging module for providing electric energy. The automatically chargeable mouse includes a mouse case, an electric energy storage element, multiple audio signal receivers, a driving mechanism, and a control unit. The audio signal receivers are used for receiving the audio signal. The control unit is used for discriminating one of the audio signal receivers that receives the strongest audio signal, thereby outputting a corresponding movement signal to the driving mechanism. The automatically chargeable mouse is moved toward the audio signal receiver that receives the strongest audio signal according to the movement signal.

Automatic recharging mouse with self-movement feature

An illumination control device is used in an optical pointer to cooperate with an optical sensor module and a light-emitting device to emit proper illuminance of light. The illumination control device includes a microcontroller generating a supplemental current when the optical pointer is in a power-saving state; and a controlled current amplifier in communication with the microcontroller, the optical sensor module and the light-emitting device for providing an amplified current for the light-emitting device to emit light. The controlled current amplifier amplifies a synthesized current of a light-emitting current generated by the optical sensor module and the supplemental current generated by the microcontroller to obtain the amplified current when the optical pointer is in the power-saving state.

Optical mouse

A method for determining the compatibility of a working surface with an optical mouse having an optical sensor including (a) using the optical sensor to sense the optical characteristics of the working surface, (b) using a judging circuit to judge the compatibility of the working surface with the optical mouse according to the optical characteristics sensed by the optical sensor, (c) using the judging circuit to generate a judging signal according to the result obtained in step (b).

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Taipei, Taiwan

Chin-Lung Lai