Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1998-01-15
2001-12-04
Chevalier, Robert (Department: 2615)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C386S349000
Reexamination Certificate
active
06327419
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a composite record/playback device and more particularly to a composite record/playback device equipped with recording media of different forms and characteristics such as video tapes and hard disc drives.
2. Description of Related Art
Conventionally, there have existed composite record/playback devices equipped with recording media of different recording formats and access characteristics referred to as video tapes and hard disc drives, with a configuration of this kind of composite record/playback device being shown in FIG.
1
.
FIG. 1
is a view showing an example configuration of a related composite record/playback device. According to a composite record/playback device
50
shown in
FIG. 1
, there is one input terminal
51
and one output terminal
52
, with an encoder
53
for carrying out compression processing of a Serial Digital Interface (SDI) signal being connected at this input terminal
51
. A video tape record/playback block
55
is connected to the output of the encoder
53
via a switch (SW)
54
and a hard disc drive block
58
is connected via a switch
56
and an SCSI (Small Computer System Interface) encoder
57
. The output of the video tape record/playback block
55
is connected to a decoder
60
for carrying out expanding processing of the played back signal via a switch
59
. The output of the hard disc drive block
58
is also connected to the decoder
60
via an SCSI decoder
61
and the switch
59
. The output of the decoder
60
is connected to the output terminal
52
of this composite record/playback device
50
. Further, the output of the video tape record/playback block
55
is connected to the switch
56
for changing over the input signal to the hard disc drive block
58
and the output of the SCSI decoder
61
is connected to the switch
54
for changing over the input signal to the video tape record/playback block
55
.
With the above configuration, the composite record/playback device
50
is capable of simultaneously recording the same SDI signal at the video tape record/playback block
55
and the hard disc drive block
58
after the SDI signal is subjected to compression processing at the encoder
53
, while expanding and outputting played back signals from the video tape record/playback block
55
and the hard disc drive block
58
with the played back signals being expanded at the decoder
60
. Therefore, in addition to such basic recording/playback functions, the device
50
is capable of carrying out dubbing processing of signals from the video tape record/playback block
55
to the hard disc drive block
58
by switching over the switch
56
in such a manner as to select the output of the video tape record/playback block
55
. In this case, for example, four times speed dubbing is possible by making the video tape record/playback block
55
play back at high speed. Further, equal speed dubbing from the hard disc drive block
58
to the video tape record/playback block
55
is also possible by changing the switch
54
over in such a manner as to select the output of the SCSI decoder
61
.
However, the related composite record/playback device
50
only have one input terminal and one output terminal, and one encoder
53
and one decoder
60
. It is therefore possible to be a composite recording device capable of simultaneously recording the same signal to the video tape record/playback block
55
and the hard disc drive block
58
. However, it is not possible to be a composite playback device where the video tape record/playback block
55
and the hard disc drive block
58
are simultaneously played back with the played back signals then being independently utilized. Therefore, the video tape record/playback block
55
and the hard disc drive block
58
are simply physically put in the same frame to reduce the functionality as a composite.
SUMMARY OF THE INVENTION
As the present invention sets out to solve the aforementioned problems, it is an object of the present invention to provide a composite record/playback device capable of independently using recording media of different formats, i.e. a video tape record/playback block and a hard disc drive block.
According to the present invention, there is provided a composite recording/playback device having recording media of different forms, capable of individually recording and playing back while carrying out mutual dubbing as needed, comprising a video tape record/playback unit for performing linear record/playback processing using a tape-shaped medium, a hard disc drive for carrying out linear record/playback processing using a disc-shaped medium, a first encoder for compression processing a first signal and supplying the compression processed signal to at least one of the video tape record/playback unit and the hard disc drive unit, a first decoder for selectively receiving and expanding playback signals of the video tape record/playback unit or the hard disc drive, and a second decoder for receiving and expanding a playback signal of the hard disc drive.
According to the above configuration, by providing a first decoder and a second decoder, the signals played back by the video tape record/playback unit and the hard disc drive can be independently expanded by the first decoder and the second decoder, respectively. This allows an AB roll editing by the playback of the video tape record/playback unit and the hard disc drive.
REFERENCES:
patent: 5731922 (1998-03-01), Yamasaki et al.
patent: 5926603 (1999-07-01), Tanaka et al.
patent: 6047099 (2000-04-01), Oku
Chevalier Robert
Frommer William S.
Frommer & Lawrence & Haug LLP
Shallenburger Joe H.
Sony Corporation
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