Appeal No. 1998-1397 Page 2
Application No. 08/482,905
forth on a source video cassette recorder (VCR) or a source
video tape
recorder (VTR) to find a scene to be edited. He positions a
destination tape on a destination VCR to receive the scene
from the source tape. The scene from the source tape is then
recorded on the destination tape; this process is repeated for
each successive scene. Because it requires constant cycling
of physical tapes having slow access times, however, tape-
based editing is slow and cumbersome.
For disk-based editing, all video material is stored on a
disk drive of a computer. The computer can find any frame in
the stored video material quickly; it also keeps track of all
edit and record frames for the entire production. After
creating an edit decision list for a program, an editor
inserts source tapes in one or more VTRs and a destination
tape into a destination VCR. The computer executes the edit
decision list to record the entire edited program onto the
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