Methods and systems for processing video signal pixel data

A video processing system to detect motion of an image comprising:

• a decoder;
• a video signal processor responsive to the decoder, the video signal processor comprising:
• a memory including a first set of coefficients and a second set of coefficients;
• an address generator providing an address signal to select one of the first and second sets of coefficients, the address signal responsive to a motion indicator signal, the motion indicator signal based on first, second, and third pixel values, the first pixel value of a first scan line in a first field, the second pixel value of a second scan line in the first field, and the third pixel value of a scan line in a second field;
• and
• an interpolator module responsive to the memory and to the address generator;
• and
• an encoder responsive to the video signal processor.

In an video processing system, a method of detecting motion of an image comprising the steps of:

• initializing a counter;
• detecting a first pixel value, a second pixel value, and a third pixel value, the first pixel value of a first scan line in a first field, the second pixel value of a second scan line in the first field, and the third pixel value of a scan line in a second field;
• comparing the second pixel value and at least one of the first and third pixel values;
• incrementing a counter based on a result of the comparison;
• and
• providing a motion indicator signal based on the counter.

A video signal processor to detect motion of an image comprising:

• a field buffer;
• a line buffer;
• a first luminance generator;
• a second luminance generator responsive to the field buffer;
• a third luminance generator responsive to the line buffer;
• an address generator responsive to the first, second, and third luminance generators, the address generator generating an address signal based on a comparison of a first luminance value from the first luminance generator, a second luminance value from the second generator, and a third luminance value from the third luminance generator, the first and third luminance values corresponding to at least one pixel of a first field and the second luminance value corresponding to a pixel of a second field;
• a memory responsive to the address generator, the memory producing color space interpolation coefficients based on the address signal;
• and
• an interpolator responsive to the field buffer, the line buffer, and the memory, the interpolator producing a color space interpolated signal based on the color space interpolation coefficients.