Apparatus and methods for down-conversion video de-interlacing

Details Apparatus and methods for down-conversion video de-interlacing Apparatus and methods for down-conversion video de-interlacing

2005-05-24

2005-05-24

Kelley, Chris (Department: 2613)

Pulse or digital communications

Bandwidth reduction or expansion

Television or motion video signal

C375S240130, C375S240240

Reexamination Certificate

active

06898243

ABSTRACT:
A video converter provides for converting an interlaced video datastream to a de-interlaced form suitable for progressive-input coding. Conversion is conducted in accordance with determined motion of image portions within the video datastream. In a preferred MPEG-1 and MPEG-2 IC pre-processor implementation, during motion processing, intra-frame and inter-frame motion analyses are conducted for a current-pixel. The resulting motion determinations are further correlated with derived and/or coding metrics and combined; the combination is also limited, smoothed and a transfer function is applied to produce a mix control. During further video processing, current-pixel data from a current field (“field data”) and corresponding filtered current frame data (“filtered frame data”) are mixed in accordance with the mix control. Resulting output preferably comprises filtered frame data for low or no determined motion, field data for high motion and motion-related mixtures of the two for remaining motion determinations.

REFERENCES:
patent: 6262773 (2001-07-01), Westerman
patent: 6324216 (2001-11-01), Igarashi et al.

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