Kolorific, Inc.

Pixelworks, Inc.

Chang-Hau Lee

Chih-Hsien Chou

Cyrus Chu

Minghua Lin

A method and system for detecting the motion between a video field and its previous and subsequent video fields at a specified position. The motion detection scheme and system allows signal values of one set of vertically adjacent pixels from a video field of one parity and two other sets of vertically adjacent pixels from two neighboring video field of opposite parity to be measured such that when taken together, these pixels represent relevant sample of an image near the vertically and temporal position of the video field. The motion detection scheme also allows the calculation of three motion values between the video field and its previous video field, the video field and its subsequent video field and the previous and subsequent fields of the same video field. The overall level of motion at the field being measured is determined by combining the information from the three motion values calculated at the specified spatial and temporal location.

Method and system for detecting motion between video field of same and opposite parity from an interlaced video source

A method and system for scaling video images between differently formatted display devices. The image scaling scheme of the present invention provides a method of receiving video signals of a first format, scaling the video signal to a second format by remapping pixels included in the first format to the second format by time delaying the input clock signal provided with the input video signal so that short or long line that typically accompany such signals are avoided.

Method and system for image scaling output timing calculation and remapping

A method for determining a value for a missing target pixel in an interlaced video field during a de-interlacing process includes providing at least one lookup table that correlates motion data to at least one of a plurality of de-interlacing methods, generating motion data related to the missing target pixel, utilizing the related motion data to perform a lookup on the at least one lookup table, and selecting the at least one de-interlacing method correlated to the motion data to generate the value for the missing target pixel. A de-interlacing system includes a motion detection unit that generates motion data related to a missing target pixel in a subject interlaced video field based on per-pixel motion measurements calculated from neighboring pixels in the subject field, at least one preceding field and at least one subsequent field, a video processing unit selects and utilizes at least one de-interlacing method to determine a value for the missing target pixel based on the related motion data, and at least one lookup table accessible to the video processing unit that correlates motion data to at least one of the plurality of de-interlacing methods.

Method and apparatus for per-pixel motion adaptive de-interlacing of interlaced video fields

A method for determining a value for a missing target pixel in an image frame includes generating a classification index from a plurality of classification pixels in a classification window associated with the missing target pixel where the classification index indicates whether a recognizable pattern is detected in the classification window, using the classification index to select a filter index via a lookup table associated with the classification index, using the selected filter index to select a set of filter coefficients via a lookup table associated with the filter index, and calculating the value for the missing target pixel using the selected set of filter coefficients.

Method and apparatus for adaptive image data interpolation

The invention provides a system and method for mixing graphics and text in an on-screen display application. The system includes font and character memories. The font memory stores bitmaps associated with characters to be displayed on a display device. The character memory, in turn, includes a font portion and an attribute portion. The font portion stores a font index of characters to be displayed, the font index being used to address the font memory. The attribute portion stores a plurality of attributes associated with a character to be displayed. The plurality of attributes includes a text/graphic attribute indicative of a text character or a graphic clip and a redirection attribute indicating mapping of a main color memory using an expanded color memory.

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Fremont, CA, United States of America

Chang-Hau Lee