Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1996-07-01
1999-12-28
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386 4, H04N 576, H04N 592
Patent
active
060092289
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an image editing system, and more particularly, to an editing system where an image of high picture quality is an object of editing.
BACKGROUND ART
An editing operation is an operation where original images, recorded on a master tape, are reset according to the manufacturing intention of a broadcasting program and also an operation which takes substantial labor and time. Incidentally, the amount of operation and the time of operation needed for this editing operation are largely dependent upon the kind of program. Particularly in the case of the editing operation of a news program, a large amount of operation is needed in order to convert an original tape to a short story of several seconds to several minutes, and also from a point of prompt report, too much time cannot be spent on the editing operation. Therefore, the demand for a system which can efficiently edit is increasing.
Incidentally, in the systems being currently used in broadcasting stations, original tapes have been employed in the mutual data transfer between news gathering, editing, and sending, and the original tapes have been physically delivered.
Therefore, when the same original tape is needed in a plurality of departments, the original tape must be dubbed and therefore operational efficiency is not always good. Also, when this dubbing is performed, there is the problem that deterioration in picture quality cannot be avoided. In addition, since it takes a long time to convey an original tape, there is the inconvenience that a quick editing operation will become impossible.
DISCLOSURE OF INVENTION
The present invention has been made in view of the problems described above, and has been aimed at proposing an image editing system where the efficiency of the editing operation is excellent, as compared to the prior art.
To solve such problems, in the present invention, by recording a compressed image compressed by an image compressing unit to a recording-reproducing unit, this compressed image can be directly transmitted, at the time of editing, to an editing terminal unit via a communication line.
Also, in the present invention, by generating a minimally compressed image and a highly compressed image by compressing a video signal at first and second compressibilities, the minimally compressed image of excellent quality can be edited based on an editing procedure list obtained from the highly compressed image where the calculation time and the transmitting time are short.
In addition, by connecting a recording-reproducing unit and an editing terminal unit through a communication line, a compressed image which is needed at the time of editing can be read out into the editing terminal unit through the communication line without physically delivering the compressed image.
Furthermore, an editing procedure list can be efficiently generated by editing a highly compressed image where the calculation time and the transmitting time are shot, by way of trial experience.
BRIEF DESCRIPTION OF DRAWINGS
FIG. 1 is a block diagram showing an embodiment of an image editing system of the present invention;
FIG. 2 is a block diagram showing an example of an editing terminal unit;
FIG. 3 is a flowchart showing the editing procedure at the time of a direct editing mode;
FIG. 4 is a diagram used to explain a cut editing;
FIG. 5 is a diagram used to explain an A/B roll editing;
FIG. 6 is a flowchart showing the cut editing procedure;
FIG. 7 is a flowchart showing the A/B roll editing procedure;
FIG. 8 is a flowchart showing the editing procedure at the time of the copy editing;
FIG. 9 is a block diagram showing another embodiment of an image editing system of the present invention;
FIG. 10 is a diagram showing an example of an editing procedure list;
FIG. 11 is a diagram showing an example of editing; and
FIG. 12 is a flowchart showing editing procedure.
BEST MODE FOR CARRYING OUT THE INVENTION
Preferred embodiments of the present invention will hereinafter be described with reference to the accompanyin
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Fujita Hiroyuki
Kaburagi Masakatsu
Takano Masayuki
Yamauchi Shingo
Frommer William S.
Sony Corporation
Tran Thai
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