Coretronic Corporation

Tung-Lung Lai

Tzu-Hai Chung

Chien-Wu Yen

A projection display apparatus and digital zooming method thereof is disclosed. The projection display apparatus receives a first image and includes a control unit, an image processor, an image scaler, a projection lens and a display unit. The control unit is for calculating an image area needed to be removed from the first image according to a zooming multiple. The image processor is for removing the image area form the first image to generate a second image. The image scaler is for scaling the second image to generate a third image. The display unit is for receiving the third image and projecting the third image onto a screen via the projection lens. The third image has a specific pixel count relative to the display unit.

Projection display apparatus and digital zooming method thereof

A method for managing bulb brightness, which is suitable for use in a displaying apparatus based on lamp, is proposed. The characteristics of the method include switching the lamp to the standard mode with maximum brightness in the displaying state, and switching the lamp to the ECO mode with reduced brightness in the other states. Therefore, this method is more adaptive than the prior art, making the apparatus to be more convenient in use, and optimizing the use of the lamp in presenting higher picture quality, and prolonging the lifetime of lamp.

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Miao-Li, Taiwan

Tung-Lung Lai