Raydium Semiconductor Corporation

Hsu-Ming Chuang

Shih-Tzung Chou

Cheng-Rung Tsai

An-Yeu Wu

Chih Yuan

Shih-Lun Huang

A multi-channel sensing system and operating method thereof are disclosed. The multi-channel sensing system includes a transceiver, emitting electrodes, and a receiving electrode. The transceiver includes a spreading code generator and a modulator. The spreading code generator generates a non-orthogonal spreading code through an invertible matrix and then the modulator modulates a data signal to spreading signals according to the non-orthogonal spreading code. The emitting electrodes, corresponding to sensing channels respectively, emit the spreading signals at the same time to pass through corresponding sensing channels respectively, and the spreading signals are converted into coupled signals by capacitive coupling. The receiving electrode receives the coupled signals and generates a received signal according to the coupled signals.

Multi-channel sensing system and operating method thereof

A detection method for detecting a plurality of contacts on a touch panel which includes a plurality of first sensing axes on a first dimension and a plurality of second sensing axes on a second dimension includes: generating a preliminary sensing data according to the contacts on the touch panel; determining at least one specific sensing axis included in the plurality of first sensing axes according to the preliminary sensing data; utilizing a configuration circuit to configure a driving and receiving sequence of the plurality of first sensing axes and the plurality of second sensing axes for obtaining a sensing output; and utilizing a determining circuit to receive a completion instruction.

Detection method and detection device for detecting multiple contacts on touch panel according preliminary sensing data

The present invention provides a method of controlling a noise processing circuit of a touch panel and a related noise signal processing apparatus. At first, the present invention detects whether the touch panel is interfered with by noise. Then, according to whether the noise interferes with the touch panel, the noise processing circuit is controlled to be activated or not activated. Therefore, the noise processing circuit can be turned off if it is unnecessary, thereby to reduce the workload due to the noise processing.

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Taichung, Taiwan

Hsu-Ming Chuang