Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1998-10-28
2002-09-17
Boccio, Vincent (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C386S349000, C386S349000
Reexamination Certificate
active
06453113
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to an editing apparatus and an editing method, and more particularly to an editing apparatus and an editing method which can be applied to a field editing system which edits, for example, a program whose data have been collected at a site.
In related art technology, at a data collecting site or the like which is a field outside a broadcasting station, a program of collected data can be edited by a simple editing system so that a result of the data collection can be broadcasted rapidly. An editing system of the type mentioned is generally constructed such that contents of collected data recorded on a magnetic tape are recorded once onto a hard disk unit as an intermediate recording medium and then edited so that they can be edited efficiently.
In particular, if a result of data collection is edited in a field by so-called AB roll editing in which two video tape recorders are used, then much time is required for such operations as fast feeding and rewinding of a magnetic tape to index it to a desired cut, and the time is required as much for the editing operation.
Therefore, an editing system which uses an intermediate recording medium duplicates a video signal and an audio signal recorded once onto a magnetic tape by means of, for example, a video tape recorder formed as a unit together with a camera onto a hard disk unit. Then, the video signal and the audio signal on the hard disk unit are reproduced to set editing points to produce an editing list, and then, they are recorded onto a magnetic tape in accordance with the editing list.
With the editing system described above, the time required for setting of editing points can be reduced significantly when compared with the AB roll editing in which a magnetic tape is used, and a result of data collection, for example, for news coverage can be broadcasted in a short time as much.
The editing system, however, requires much time to duplicate a video signal and an audio signal recorded on a magnetic tape onto an intermediate recording medium. Incidentally, even when it is tried to record a result of data collection for 30 minutes onto a hard disk unit, for example, at a quadruple speed, a time as long as seven minutes and 30 seconds is required to record the data onto the hard disk unit.
Further, a result of editing is re-recorded onto a magnetic tape and brought back to a broadcasting station. Also such re-recording of a video signal onto a magnetic tape requires much time.
Assuming that the time required for such operations of the types mentioned as above can be reduced, processing of a result of data collection can be performed significantly efficiently when compared with a related art system, then the convenience in use of a system of the type described can be further improved.
In this instance, it is considered that, if a common recording medium in the form of an optical disk is used in place of a magnetic tape to perform processing from imaging to editing, then the processing of duplication of a video signal and an audio signal onto an intermediate recording medium can be omitted. It is also considered that, if an editing list is recorded onto the optical disk and the optical disk is brought back to a broadcasting station, then also an operation of re-recording the result of editing can be omitted. Further, where an optical disk is used, since it allows random accessing, also processing of non-linear editing can be performed similarly as in a case wherein a video signal and an audio signal are recorded on a hard disk apparatus. Consequently, it is anticipated that an editing operation can be performed efficiently.
However, where an optical disk is used, it is considered that so-called voice over recording is difficult.
In particular, in an editing operation in which a magnetic tape is used, for example, narration, background music or the like is allocated to contents of collected data by pre-voice over recording wherein a video signal is edited and recorded onto a magnetic tape after an audio signal is edited and recorded onto the magnetic tape or by after-voice over recording wherein an audio signal is edited and recorded onto a magnetic tape after a video signal is edited and recorded onto the magnetic tape.
In both voice over recordings, while an audio signal or a video signal recorded on a magnetic tape in advance is monitored, a corresponding video signal or audio signal is carried into after recording. Consequently, in order to perform voice over recording with an editing system in which an optical disk is used, while a video signal or an audio signal recorded on an optical disk is reproduced, an audio signal or a video signal must be recorded onto the optical disk.
However, an optical disk is driven in the condition of a fixed linear velocity so that desired data can be recorded in a high density onto it. Consequently, it is considered that it is difficult to record an audio signal and a video signal simultaneously onto an optical disk or reproduce an audio signal and a video signal recorded in different regions of an optical disk simultaneously. This makes voice over recording difficult after all.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an editing apparatus and an editing method by which voice over recording can be performed even where an optical disk is used for a procedure from data collection to editing.
In order to attain the object described above, according to the present invention, an editing apparatus and an editing method are generally constructed such that, while an audio signal of narration or the like is recorded onto the inner circumference side of an optical disk, a video signal recorded on the outer circumference side of the optical disk is reproduced, or while an audio signal such as narration is edited once using a storage means, a video signal is reproduced from an optical disk and outputted directly or through the storage device and then the edited audio signal is recorded onto the optical disk, thereby allowing voice over recording even with an editing apparatus in which an optical disk is used.
In particular, according to an aspect of the present invention, there is provided an editing apparatus which accesses a disk type recording medium on which a video signal and an audio signal are recorded in substantially equal line recording densities on the inner circumference side and the outer circumference side of the disk type recording medium, comprising, the disk type recording medium having an information recording face which is divided into concentric areas in outer circumference side ones of which recording areas for a video signal and an audio signal are formed and in an innermost circumference one of which a recording area for data of an editing list of the video signal and an auxiliary audio signal corresponding to the video signal of a result of editing based on the editing list is formed, an audio recording system for recording the auxiliary audio signal into the recording area for the auxiliary audio data, and a video reproduction system for accessing the disk type recording medium in accordance with the editing list in response to processing of the audio recording system to reproduce the video signal of a result of editing from the disk type recording medium and continuously outputting the reproduced video signal.
In the editing apparatus, a disk type recording medium on which a video signal is recorded in substantially equal line recording densities on the inner circumference side and the outer circumference side of the disk type recording medium is used, and, in addition to data of an editing list of a video signal, an auxiliary audio signal corresponding to the video signal of a result of editing based on the editing list is recorded into the innermost circumference area of the disk type recording medium. Consequently, the video signal recorded on the outer circumference side can be reproduced at a transfer rate higher than that upon recording. Accordingly, in a corresponding relationship to this pro
Ando Hideki
Noguchi Norihiko
Sakai Seiichi
Boccio Vincent
Frommer William S.
Frommer & Lawrence & Haug LLP
Sony Corporation
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