Pixart Imaging Incorporated

Ching-Chih Chen

Tzu-Yu Chen

Chih-Yen Wu

Jr-Yi Li

Yao-Hsuan Lin

Ming-Tsan Kao

Ren-Hau Gu

Chien-Jung Huang

A method of a pointing device which is used to be coupled to a host system through a universal serial bus (USB) communication interface includes: providing a USB driver device to communicate with the host system via the USB communication interface; monitoring a specific voltage change or a specific data transmission state of the USB communication interface to generate a monitoring result; and correcting a USB state of the USB driver device when the monitoring result indicates that a undefined or abnormal behavior of the host system occurs.

Pointing device and method capable of correcting its USB state by monitoring voltage/state of USB communication interface

An optical navigation method includes: detecting inertia of an image of a feature point; and determining an effective sensing region of an image sensing array according to the detected inertia for reducing power consumption. Besides, an optical navigation apparatus includes a detecting circuit and a determining unit. The detecting circuit is arranged for detecting a moving inertia of a feature point. The determining circuit is coupled to the detecting circuit, and arranged for determining an effective sensing region of an image sensing array according to the detected moving inertia for reducing power consumption.

Optical navigation method for dynamically adjusting size of image sensing region and related apparatus thereof

A method of testing an image sensor having a plurality of sensing units includes: utilizing the image sensor to generate a plurality of sensing results respectively corresponding to a plurality of captured images, wherein each sensing result includes a plurality of sensing values respectively generated by the sensing units; and generating a testing result which indicates a performance of the image sensor according to changing of the sensing results.

Method of testing image sensor and related apparatus thereof

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Hsin-Chu, Taiwan

Ching-Chih Chen