Lenovo (beijing) Limited

Beijing Lenovo Software Ltd.

James Rutledge

Ke Shang

Fang Xu

Jingping Yang

The present invention provides an optical touch system, applied to an electronic apparatus having at least a physical plane. It comprises: an optical unit set on the physical plane and configured to produce a first optical effect; an image acquisition unit set on the physical plane, at least a part of the optical unit being within an acquisition range of the image acquisition unit, a touch operation area being formed by the image acquisition unit and the optical unit; the image acquisition unit configured to capture an image having a second optical effect which is formed on the first optical effect after an operation body for operating the electronic apparatus enters the touch operation area; a processing unit being connected with the image acquisition unit and configured to determine the range of the operation body in the touch operation area according to the image having the second optical effect. The present invention also provides an optical touch input display apparatus and optical touch input positioning method. The touch system of the present invention is low-cost and highly reliable.

Optical touch system and method for optical touch location

A display control method of a portable terminal and a portable terminal are described where, the portable terminal includes a main screen, a host and a display control module, a projection screen as an auxiliary screen set on the main screen, the auxiliary screen is overlapped with the main screen as in a non-usage state, and protrudes from the main screen as in a usage state. The projection module is set in the host, and the projection module is connected with the display control module. The present invention reduces the weight of the portable terminal while guaranteeing the double-screen display.

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Beijing, China

James Rutledge