Lite-on Technology Corporation

Silitek Electronic (guangzhou) Co., Ltd.

Yung-Yu Huang

Hsi-Pin Li

A auto-focusing method for projection of a computing device with imaging function is illustrated. The computing device exemplarily includes a projection unit, an image receiving unit, and a processing unit. The method firstly controls the projection unit to project images on plural positions along an optical axis. The method then controls the image receiving unit to receive the images, which are regarded as candidate images, projected on the positions by the projection unit. The candidate images correspond to the projective positions. The method further receives the candidate images captured by the image receiving unit, and compute their definitions. Therefore, the image with a greatest definition may be acquired and regarded as a focus image. The focus image's corresponding position is a focus position. After acquiring the focus position, an image may be projected thereon. The illustrated computing device is enabled to complete the image focusing automatically.

Computing device with imaging function and auto-focusing method for projection thereof

Disclosed is a telecommunication system including a main telecommunication apparatus, at least one slave telecommunication apparatus and a virtual signal circuit. The slave telecommunication apparatus is coupled to the main telecommunication apparatus. The virtual signal circuit, which is coupled to the main telecommunication apparatus and the slave telecommunication apparatus, is used for generating a DC virtual signal to the slave telecommunication apparatus in a silent operation mode and for transmitting a telecommunication signal to the slave telecommunication apparatus in a normal operation mode to recover the original telecommunication function and operation.

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Hsinchu, Taiwan

Yung-Yu Huang