JPH05101621A - Digital vtr - Google Patents

Abstract

PURPOSE:To enable editing only by providing a digital VTR. CONSTITUTION:Digital signals reproduced by a head 13 are supplied to a reproduction processing circuit 14 via a recording reproducing changeover switch 12; and video signals and sound signals which are processed for prescribed reproduction and converted to analog are respectively taken out to output terminals 1c, 1d. Simultaneously, reproducing signals from the switch 12 are supplied to a detecting circuit 15 for time code data, and the time code data in the reproducing signals are detected. This time code data is supplied to a comparator circuit 16, compared with the time code data set in a storage device 17, and this compared output is supplied to a system control circuit 18. Thus, the operation of each part of the VTR 1 is controlled. Also, the compared output from the comparator circuit 16 is supplied to a circuit 19 generating remote control signals. Then, the remote control signals generated by this generating circuit 19 are taken out to an output terminal 1e.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital VTR which digitizes a video signal and records and reproduces it.

[0002]

2. Description of the Related Art Conventionally, when a video signal is edited, an editing device is prepared in addition to a VTR on the reproducing side and a VTR on the recording side, and two VTRs are operated in synchronization. .. However, in this method, a special editing device must be prepared only for editing, and it is not possible for a general user to easily perform this.

On the other hand, a digital VTR has been proposed in which a video signal is digitized and recorded and reproduced.
In such a digital VTR, it is considered that the time code data is inserted into the digitized video signal to record / reproduce. The present application focuses on this point.

[0004]

A problem to be solved is that a conventional editing apparatus had to be prepared in order to edit a video signal.

[0005]

According to the present invention, at least a video signal is digitized (recording processing circuit 10), and time code data (generator 11) is inserted into the digitized signal for recording / reproduction ( Digital VTR 1 with changeover switch 12 and head 13)
In, there is provided means for setting arbitrary time code data (memory device 17) and means for detecting time code data in the digitized signal (detection circuit 15), and these set time code data are provided. Means (system control circuit 18) for discriminating between the detected time code data (comparison circuit 16) and controlling the search and reproduction of at least the digitized signal, and another VTR 2 in synchronization with this control. And a means for generating a remote control signal (remote control signal generation circuit 19) to the digital VTR.

[0006]

According to this, the video signal can be edited only by preparing the digital VTR.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the structure of the main part. 1 in this figure
Is a digital VTR according to the present application. This VTR1
Then, for example, the video signal supplied to the input terminal 1a and the audio signal supplied to the input terminal 1b are recorded in the recording processing circuit 10.
And are converted into predetermined digitized recording signals. Further, the time code data from the generator 11 is supplied to the recording processing circuit 10, and this time code data is inserted into the digitized recording signal. This recording signal is recorded / reproduced by the switch 1.
It is supplied to the head 13 through 2. As a result, at least the video signal is digitized, and the time code data is inserted into the digitized signal for recording.

On the other hand, during reproduction, the digital signal reproduced by the head 13 is recorded / reproduced by the switch 1.
2 is supplied to the reproduction processing circuit 14. Then, the video signal and the audio signal, which have been subjected to a predetermined reproduction process and converted into analog, are taken out to the output terminals 1c and 1d, respectively.

At the same time, the recording / reproducing changeover switch 1
The reproduction signal from 2 is a time code data detection circuit 15
And the time code data inserted at the time of recording is detected from the reproduction signal. This time code data is supplied to the comparison circuit 16. Also, any storage device 1
The time code data set to 7 is supplied to the comparison circuit 16, and this comparison output is supplied to the system control circuit 18. This controls the operation of each part of the VTR 1. Further, the comparison output from the comparison circuit 16 is supplied to the remote control signal generation circuit 19. And this generating circuit 19
The remote control signal generated in 1 is taken out to the output terminal 1e.

Therefore, in this device, an arbitrary recording tape is reproduced by the VTR 1, the reproduced video signal and audio signal are supplied to another VTR 2, and the VTR is also reproduced.
The remote control signal generated by the generating circuit 19 of VTR2
, The video signal can be easily edited.

That is, in this apparatus, for example, if there is a recording tape as schematically shown in FIG. 2 and the portion of the recording signal indicated by the slanted lines in this drawing is edited in numerical order, for example, The time code data as shown in Table 1 is set in the storage device 17.

[0012]

[Table 1]

As a result, in the VTR 1, the search mode is first instructed by the system control circuit 18, and the start point of the first scene 0 is searched. At this time, the generation circuit 19 generates a remote control signal for pause and supplies it to the VTR 2. Then, in the comparison circuit 16, the time code data detected by the detection circuit 15 and the storage device 17
When it is determined that the time code data of the start point of the scene 0 set in step 1 is determined, the system control circuit 1
The playback mode is instructed at 8, and the remote control signal for releasing the pause (recording) is generated from the generation circuit 19 to cause the VT.
It is supplied to R2.

Further, when the comparison circuit 16 determines that the time code data detected by the detection circuit 15 and the time code data of the stop point of the scene 0 set in the storage device 17 match, the system control circuit 18 determines. The search mode is commanded again, and the start point of the next scene 1 is searched. At the same time, the generation circuit 19 generates a pause remote control signal and supplies it to the VTR 2. By repeating this operation in sequence, the portion of the recording signal indicated by the diagonal lines on the recording tape is VTR in numerical order.
2 is recorded, and the video signal is edited.

Thus, according to the above apparatus, the video signal can be edited only by preparing the digital VTR 1.

In the above apparatus, the remote control signal supplied to the VTR 2 is supplied from the input terminal 1f to the system control circuit 18 as shown in the VTR 1 to issue a pause and pause (record) command. .. Also VT
R2 can be any VTR as long as it is not a digital VTR similar to VTR1 but a model having a remote control signal input terminal.

Further, the above-mentioned setting of the time code data in the storage device 17 is performed, for example, by operating an operation button or the like at a desired point while viewing the surface during reproduction, and at that time the detection circuit 1
The time code data detected in 5 may be stored.

[0018]

According to the present invention, the video signal can be edited only by preparing the digital VTR.

[Brief description of drawings]

FIG. 1 is a block diagram of an example of a digital VTR according to the present invention.

FIG. 2 is a diagram for explaining the explanation.

[Explanation of symbols]

 1 Digital VTR 2 according to the present application Other VTR 1a Video signal input terminal 1b Audio signal input terminal 1c Video signal output terminal 1d Audio signal output terminal 1e Remote control signal output terminal 1f Remote control signal input terminal 10 Recording processing circuit 11 Time code data generator 12 Recording / reproduction changeover switch 13 Head 14 Reproduction processing circuit 15 Time code data detection circuit 16 Comparison circuit 17 Storage device 18 System control circuit 19 Remote control signal generation circuit

Claims (1)

[Claims] 1. A digital VT adapted to digitize at least a video signal and to insert and record time code data in the digitized signal for recording and reproduction.
In R, it has means for setting arbitrary time code data and means for detecting the time code data in the digitized signal, and these set time code data and detected time code data are A means for controlling at least the search and reproduction of the digitized signal by discriminating and another VT in synchronization with this control.
And a means for generating a remote control signal to R.