Dynamic magnetic information storage or retrieval – Record editing
Patent
1987-08-06
1989-06-06
Nussbaum, Marvin L.
Dynamic magnetic information storage or retrieval
Record editing
358311, 360 143, H04N 7087, H04N 593, G11B 2702
Patent
active
048376388
ABSTRACT:
A video editing system which utilizes the vertical interval time code address as the sole edit control code in performing a video edit, whereby a time code of the edit point is read from the record videotape and is supplied to an inserting circuit which inserts the code into the vertical blanking period of the video edit signal. Reading and editing are performed by utilizing a modified recorder having a pre-erase video head or a modified reader which supplies a time code to the generator during pre-roll time only, or a modified generator having means to latch a pre-set time code prior to recording. In an alternative embodiment, a system is disclosed which utilizes a small track of a videotape separate from the track containing the main video signal, the smaller track having a segment of the vetical blanking period which contains the time code address recorded thereon. A second language translation is also disclosed as being part of any of the embodiments since the need for a dedicated longitudinal track for recordation of time code addresses is eliminated.
REFERENCES:
patent: 3604858 (1971-09-01), Doi
patent: 4134130 (1979-01-01), Tachi
patent: 4163262 (1979-07-01), Kaemmerer
patent: 4167759 (1979-09-01), Tachi
patent: 4316224 (1982-02-01), Hansen et al.
patent: 4507688 (1985-03-01), Fujiki et al.
Hickman et al-"Time Code Handbook", Datametrics-Dresser Industries, Inc., Wilmington, Mass. .COPYRGT.1982; pp. 1-9, 41-43, 80-88.
Society of Motion Picture and Television Engineers, Inc. Journal Feb. 1984-"An Intelligent Time-Code Peripheral for Computer-Based Videotape Editing System" by Michael Racelo.
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