Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1992-05-12
1993-11-09
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358214, 358 54, 358 11, H04N 701, H04N 336, H04N 5753
Patent
active
052607879
ABSTRACT:
A film-to-video frame image convertor includes a 3-2 pulldown frame convertor for converting signals representing input film frame images, having a lower associated film frame image rate, to signals representing output video frame images having a higher associated video frame image rate. The output video frame images consist of genuine and simulated video frame images, which correspond to actual input film frame images and multiple input film frame images, respectively, in accordance with a 3-2 film-to-video frame pulldown. Each genuine video frame image consists of two video field images corresponding to two actual film field images from the same film frame image. Each simulated video frame image consists of two video field images corresponding to two actual film field images from different film frame images, with one of the two video field images being a duplicate of a video field image in an adjacent video frame image. Identification signals are selectively inserted into the vertical blanking interval of some of the output video frame images to identify which ones are simulated video frame images containing duplicate video field images. This allows the duplicate video field images to be identified and selectively deleted when the video frame images, having the higher associated video frame image rate, are to be reconverted to film frame images having the lower associated film frame image rate.
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Capitant Patrice J.
Hodgson David O.
Perry Vinson R.
Groody James J.
Metjahic Safet
Sony Electronics Inc.
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