Smartasic, Inc.

Spreadtrum Communications Corporation

Huaya Microelectronics, Ltd.

Jin Ji

Shengquan Hu

Datong Chen

Jingdong Lin

Henry Haojan Tung

Biao Zhang

Wai Khaun Long

Chunliang Bao

Ying Tian

A digital image upscaling system enhances the visual quality of enlarged images by detecting diagonal edges and applying an appropriate scaling algorithm, such as a rotated bilinear scaling process, to output pixels associated with those edges. The rotated bilinear scaling process involves detecting diagonal edges and specifying a new frame of reference rotated 45&#xb0; from the original frame of reference, and then selecting a rotated pixel set based on the new frame of reference. Bilinear interpolation in the new frame of reference using the rotated pixel set provides improved pixel data for the output pixel. Output pixels found not to be associated with diagonal edges are processed using standard bilinear interpolation.

4&#xd7;4 pixel-based edge detection and edge enhancement without line buffer overhead

A method for processing a received signal at a mobile receiver of a wireless communications system is disclosed. The method comprises demodulating the received signal to obtain an analog base band signal and converting the analog base band signal into a digital base band signal. The signal strength of the digital base band signal is estimated and, using the estimation, the digital base band signal is scaled by a scaling factor. The digital base band signal is equalized into an equalized digital signal which is then rescaled by a resealing factor.

Receiver signal dynamic range compensation based on received signal strength indicator

A method and system enhances the color of an image by manipulating the chrominance and/or luminance signals of the image. Specifically, a color enhancement system sharpens color changes for better picture quality on digital display systems. In one embodiment of the present invention, color changes are detected by a color change detection unit. If the color changes are significant, a color change sharpening unit sharpens the color change to enhance the image.

Color enhancement of analog video for digital video systems

A method and system of noise filtering is provided. The pixels of a first filter mask are separated into groups based on luminance . . . The sizes of each group is determined and a largest group is selected. The distance of each group of pixels from the largest group is also calculated. Pixels in groups that are small compared to the largest group and far from the largest group are tagged as noisy. After tagging the noisy pixels, additional filtering can be applied to the pixels of first filter mask without degradation from the tagged pixels.

Motion adaptive noise reduction method and system

A method and circuit generates a complete picture from a series of digitized interlaced video fields. Each pixel in the complete picture is either duplicated from a digitized interlaced video field or interpolated from three adjoining digitized interlaced video fields. Interpolated pixels are computed from a combination of same-field and adjoining-field pixels. A percentage difference of the luminance values of the same-field and adjoining-field pixels included in the interpolation is used to maximize motion capture in the de-interlaced picture. Additional embodiments incorporate filtering of the percentage difference based on a threshold value to minimize soft noise in the de-interlaced picture.

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Sunnyvale, CA, United States of America

Jin Ji