Industrial Technology Research Institute

Intellectual Property Innovation Corporation

Acer Inc.

Chang-Po Chao

Yi-Chuan Lu

Heng-Yin Chen

Guan-Jung Luo

Sih-Han Li

Chien-Ju Lee

Tsai-Kan Chien

Wei-Yen Lee

Yen-Lin Pan

Hung-Ming Tsai

Wen-Yu Chen

Ying-Jia Lin

Chang-Xian Wu

Hsuan-Wen Peng

Jyun-Yao Ruan

Jian-Ting Chen

A position-encoding device includes a sensing device, a filtering device, a calibrating device and a compensating device. The sensing device senses the motion of a moving device to generate first and second signals. The filtering device filters the first and second signals to generate first and second filtering signal. The calibrating device captures the first and second filtering signals to obtain time and phase information of the first and second filtering signals, performs gain and offset calibration on the first and second filtering signals, and performs a phase calibration on the first and second filtering signals through first, second feedback signals and the time and phase information of the first and second filtering signals to generate first and second calibrating signals. The compensating device compensates for the first and second calibrating signals according to a lookup table, so as to generate first and second position encoding signals.

Position-encoding device and method

A touch panel driving apparatus generates a differential signal corresponding to a detection result of a touch panel. The touch panel driving apparatus includes a driving circuit, a first integrating sampling circuit, and a second integrating sampling circuit. The first integrating sampling circuit generates a first end signal of the differential signal. The second integrating sampling circuit generates a second end signal of the differential signal. When a touch event does not occur, a level of the first end signal and a level of the second end signal are in a common mode signal range of the differential signal. When the touch event occurs, the first integrating sampling circuit pulls up the level of the first end signal out of the common mode signal range, and the second integrating sampling circuit pulls down the level of the second end signal out of the common mode signal range.

Touch panel driving apparatus

The present disclosure provides a driving device for driving a sensing device having a plurality of driving electrodes and a plurality of sensing electrodes. The driving device includes a signal processing circuit and a readout circuit. The signal processing circuit is electrically connected to the plurality of driving electrodes of the sensing device. The signal processing circuit is configured to generate a plurality of driving signal to drive the sensing device. The signal processing circuit selects a plurality of Walsh codes from a plurality of rows or columns of a Walsh matrix to serve as a plurality of driving signals. The readout circuit readouts the sensing device to generate a plurality of sensing signals and provides the plurality of sensing signals to the signal processing circuit, so that the signal processing circuit demodulates the plurality of sensing signals. In addition, a driving method is also provided.

Driving device and device method

The disclosure provides a touch control apparatus and noise compensation circuit and method thereof. The noise compensation circuit includes an integration circuit, a noise storage circuit, and a noise detection circuit. The noise detection circuit receives a plurality of continuous touch detection signals, and compares the touch detection signals with a first and second threshold values to generate a plurality of detection results. The noise detection circuit sets a plurality of noise signals to be saved in the noise storage circuit or transmits a plurality of effective signals to the integration circuit based on the detection results. The noise storage circuit generates an average noise within a time period based on the noise signals and transmits the average noise to the integration circuit. The integration circuit generates a touch detection result according to the effective signals and the average noise.

Touch control apparatus and noise compensating circuit and method thereof

A touch device and a sensing compensation method are provided. The touch device may include a touch panel, a sensing compensation circuit and a sensing circuit. The sensing compensation circuit may be coupled to the touch panel for providing a compensation-impedance according to features of the touch panel. The sensing circuit may be coupled to the sensing compensation circuit. The sensing circuit receives touch information compensated by the sensing compensation circuit.

Touch device and sensing compensation method

Growing community of inventors

Taipei, Taiwan

Chang-Po Chao