Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Patent
1995-08-23
1998-02-17
Tran, Thai
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
386122, 386125, 369 32, H04N 5781, H04N 592
Patent
active
057199850
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to an information data recording/reproducing apparatus adapted for recording information data from an information data input unit to reproduce the recorded information data to output reproduced data to an information data output unit, and an information data processing system provided with such information data recording/reproducing unit.
BACKGROUND ART
Hitherto, in supplying, upon occasion, a plurality of information data recorded by a plurality of input units to plural viewers (viewing and listening persons) through a plurality of output units, reproducing units were required every plural viewers.
If information data is, e.g., video data, video tape recorders 54 were required as shown in FIG. 1 for plural viewers. For example, video signals obtained through a satellite antenna 51 were recorded onto a video tape 53 by means of a video tape recorder 52 for input to supply, upon occasion, such video tape 53 on which those video signals are recorded to viewers by means of video tape recorders 54 for output dedicated to the viewers. Moreover, the case where, e.g., video signals imaged (taken) by a camera 55 for studio are recorded by means of a video tape recorder 56 for input to provide, upon occasion, those video signals, and/or the case where video signals imaged (taken) by using a portable compact camera integrated type video tape recorder 57 at outdoor place are supplied upon occasion are also similar to the above.
Meanwhile, as shown in FIG. 1, in the video data recording/reproducing system in which input video tape recorders 52 and 56, and output video tape recorders 54 are used to send out recorded video signals to viewers, as occasion demands, various problems were arisen resulting from the fact that the recording medium is video tape 53.
Initially, in the case where a set (cluster or bundle) of video signals are assumed to be called video data file, when such one video data file is being recorded, it was difficult to reproduce, without interrupting recording of the entirety of the video data file, the portion recorded earlier by several ten minutes within the video data file.
Moreover, it was impossible to supply one video data file to plural viewers under the state shifted by small time differences. To realize this, it was necessary to prepare plural video tapes on which corresponding video data file is copied and recorded.
Further, it was impossible to reproduce a plurality of video data files within the same video tape without interruption in an arbitrary order that viewers desire. To realize this, it was necessary to prepare a video tape on which plural video data files are recorded in an arbitrary order that viewers desire.
Further, it was impossible to reproduce, without interruption, plural video data files with respect to different video tapes.
Further, in the above-mentioned video data recording system, video data from respective dedicated input units are recorded by a single recording unit and is reproduced by a single reproducing unit for a single viewer. Recording/reproduction operations of plural channels were not carried out by a single recording/reproducing unit. For this reason, first of all, there resulted high cost in construction of the system.
This invention has been made in view of the above-described actual circumstances, and its object is to provide an information data recording/reproducing apparatus and an information data processing system which are capable of reproducing the portion recorded earlier by, e.g., several minutes to several ten minutes within the same data file in the state where interruption of recording of the entirety of the data file is caused to be unnecessary.
Another object of this invention is to provide an information data recording/reproducing apparatus and an information data processing system which can supply the same data file to plural viewers in the state shifted by arbitrary time differences.
A further object of this invention is to provide an information data recording/reproducing apparatus and an infor
REFERENCES:
patent: 5032927 (1991-07-01), Watanabe et al.
patent: 5371602 (1994-12-01), Tsuboi et al.
Ito Norikazu
Yoneya Satoshi
Yutani Satoshi
Frommer William S.
Sinderbrand Alvin
Sony Corporation
Tran Thai
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