JPH04298877A - Vtr device - Google Patents

Abstract

PURPOSE:To facilitate an editing work by performing degeneration in a pause mode of recording. CONSTITUTION:The recording is stopped with a jog shuttle ON/OFF key 24. Turning on the key 24 activates the pause mode and at the same time, a recording mode is switched to a reproducing mode. Performing a slow reverse reproduction with a jog shuttle key 23 reproduces the contents recorded up to that time with a magnetic head 6 at slow speed in the reverse direction and the slow reverse reproducing signal is inputted to a monitor from a processing circuit 7. Then the recorded tape is rewound up to the position where deletion is to be started. Then turning off the key 24 pauses the recording mode to get ready for the recording. Thus, the image in which the deleted part of the reproduced image is accurately deleted can be recorded in the editing work.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] In the recording mode, the present invention sends the input video signal to the magnetic head and transmits it as it is from the branch point to the output terminal, and in the playback mode, the video signal reproduced by the magnetic head is sent to the output terminal. This relates to VTR devices for transmission, and in particular, VTRs that can take in video signals being played by another VTR device and edit and record them.
It is related to the device.

0002

[Prior Art] A home-use cassette VTR device allows
Editing is also practiced at home by deleting unnecessary parts from the reproduced images obtained by shooting video movies and re-recording only the good parts. The general method is to input the output signal of the video movie to a cassette VTR device, and control the progress/stop of recording on the VTR device while watching the monitor screen.
This method records only the necessary parts.

Specifically, as shown in FIG.
If there is a (video) part 1b that you want to delete, start recording on the cassette VTR device at the same time as playing the video movie, and pause recording on the cassette VTR device when the beginning 1c of the part 1b you want to delete is reached. , continue playing the video movie, and select the beginning 1d of the part 1a that you want to keep again.
This is a method of canceling the pause of the cassette VTR device and restarting recording when the time comes. As a result, the cassette V
In the cassette tape of the TR device, a videotape is created (edited) in which only the portion 1a that is desired to be preserved is recorded.

However, it is difficult to accurately pause recording at the beginning 1c of the portion 1b that you want to delete, and in most cases the recording ends up being paused at a position 1e that has gone too far. The next recording starts from position 1f, which is farther than 1d. In this way, in reality, a situation occurs in which part of the portion 1b that is desired to be deleted remains on the edited tape, and a portion of the portion 1a that is desired to be kept is deleted.

[0005] In order to prevent this, when the recording state on the cassette VTR side is temporarily stopped,
All you have to do is rewind it a little, play it backwards to the beginning 1c of the part 1b you want to delete, and pause there to enter the recording standby state. This allows accurate deletion from the head 1c.

[0006]

[Problem to be solved by the invention] However, the above operation is performed by switching from "recording mode" to "rewind mode" to "playback mode".
→The operation is complicated because it requires the operation of "recording mode and pause setting", and since recording is restarted by canceling the pause while watching the playback image, recording starts at position 1f as described above. The possibility of deviation remains. Regarding the latter, it is necessary to release the temporary stop of the cassette VTR device a little earlier based on experience, but this is extremely difficult. SUMMARY OF THE INVENTION An object of the present invention is to provide a VTR device that can accurately stop recording at the beginning of a portion desired to be deleted or restart recording accurately at the beginning of a portion desired to be recorded.

[0007]

[Means for Solving the Problems] In order to solve the problems, the present invention provides that in the recording mode, the input video signal is sent to the magnetic head and transmitted as it is from the branch point to the output terminal, and in the playback mode, the video signal reproduced by the magnetic head is In a VTR device that transmits a video signal to the output terminal, a delay circuit provided in a path from the branch point of the input video signal to the magnetic head;
Means for switching the recording mode to a playback mode by capturing an on signal of a jog shuttle "on/off" key of the remote control device, and enabling forward/reverse playback, slow playback, etc. in accordance with the operation of the jog shuttle key of the remote control device. and means for setting a recording pause mode by receiving an off signal from the jog shuttle "on/off" key.

[0008]

[Examples] Examples of the present invention will be described below. FIG. 1 is a circuit diagram of a VTR device according to one embodiment. 2 is a video signal input terminal, 3 is an AGC circuit, and 4 is a delay circuit. Reference numeral 5 denotes a recording signal processing section, which performs emphasis processing on chroma signals, emphasis processing on luminance signals, and subsequent processing such as FM modulation. 6 is a magnetic head for both recording/reproducing. Reference numeral 7 denotes a reproduction signal processing section, which performs processing opposite to that of the recording signal processing section 5 described above. 8 is an output amplification section, and 9 is a video signal output terminal. S1 branches the signal input to input terminal 2 from branch point a and outputs it to output terminal 9.
Output signal changeover switches S2 and S3 are record/replay changeover switches for transmitting the video signal to the output terminal 9 or transmitting the video signal reproduced by the magnetic head 6 to the output terminal 9. These switches S1 to S3
switches to the solid line side for recording and to the dashed line side for playback.

FIG. 2 is a diagram showing a remote control device 20 for controlling the VTR device of this embodiment. This remote control device 2
0 has a disk-shaped jog shuttle key 23 in addition to a channel key group 21 and a VTR operation key group 22, and a jog shuttle "on/off" key 24 for switching on/off of the jog shuttle key 23, An LED 25 is provided to indicate /off. The jog shuttle key 23 is used to control the tape playback state (forward direction, reverse direction, high or low speed) by rotating it when it is activated.For example, rotating it slowly will cause slow playback, or quickly. By rotating it, you can switch to fast forward mode. This is possible in forward and reverse directions.

FIG. 3 is a diagram showing a control device 30 that takes in the operation signal of the remote control device 20 described above, in which 31 is a light receiving section that takes in the remote control optical signal, and 32 is the light receiving section 31.
This is a control unit that processes control signals input from the controller to control the switching states of the switches S1 to S3 and outputs signals to control other parts.

The operation of the VTR apparatus of this embodiment will be explained below with reference to the flowchart shown in FIG. In this embodiment, recording is stopped by operating the jog shuttle "on/off" key 24, rather than by operating a pause key as in the conventional case. Normally, when this key 24 is turned on during playback, the operation is the same as when the pause key is turned on. The only difference from a normal pause key is that after playback is paused by turning on this key 24, the jog shuttle key 23 can be used.

In addition to this, in this embodiment, when this jog shuttle "on/off" key 24 is turned on in the recording mode, the switches S1 to S3 are switched to the side shown by the broken line in FIG. mode, and at the same time fires a remote control code to enter pause mode. Now, when the cassette VTR device is set to recording mode, the switches S1 to S3 are switched to the solid line side, and the output video signal of the video movie input to the input terminal 2 is recorded by the magnetic head 6, and the video signal at the same time is sent via the switch S1. Output to the monitor from output terminal 9.

In this state, when you check the beginning 1c of the portion 1a you want to delete on the video movie side magnetic tape 1 on the monitor and turn on the jog shuttle "on/off" key 24, the recording mode is switched to the playback mode ( switch S1
~S3 switches to the broken line side), and at the same time becomes a temporary stop. Next, when the jog shuttle key 23 is operated to perform reverse slow playback, the contents recorded so far by the magnetic head 6 are played back slowly in the reverse direction, and this reverse slow playback signal is sent to the monitor from the processing circuit 7. Output terminal 9 via S1
Input from Then, while checking this monitor image, the tape is rewound to the recorded position that is desired to be deleted (corresponding to position 1c in FIG. 5). Next, the jog shuttle "on/off" key 24 is turned off.

[0014] This jog shuttle "on/off" key 2
4, the cassette VTR device is set to a pause state in the recording mode and enters a recording standby state. In other words, switches S1 to S3 switch to the solid line side and pause (equivalent to operating the pause key),
You can check the output image of the video movie on the monitor. After this, the playback image of the video movie will be at the position 1d where you want to record.
The pause is canceled when the monitor confirms that it has arrived. This is done using the normal pause key operation. This causes the recording to be resumed. At this time, the recording signal is delayed by the delay circuit 4. For this reason, in the past, recording was restarted at position 1f after the above-mentioned pause release was delayed, but it can be adjusted to position 1d. The specific delay time of this delay circuit 4 is set in accordance with the time (time lag) from when a human starts releasing the pause until it actually functions as a movement of the mechanism of the VTR device.

Note that the delay of this delay circuit 4 is also effective when operating the jog shuttle "on/off" key 24, and the stop can be executed at a position almost close to the head 1c. Since the jog shuttle key 23 can be used at this time, recording standby can be performed at a more accurate position of the head 1c. The time required to "pause recording" → "reverse playback" → "set pause in recording mode" by operating the jog shuttle "on/off" key 24 is longer than the time of the part 1b that you actually want to delete. It can also be long. In such a case, when the jog shuttle "on/off" key 24 is turned on, a control signal to pause playback is supplied to the video movie, and when the key 24 is turned off, a control signal to cancel the pause is supplied. Just do it.

[0016]

As described above, according to the present invention, it is possible to record an image in which the portion of the reproduced image that is desired to be deleted is accurately deleted during editing work.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a video signal path of a cassette VTR device according to an embodiment of the present invention.

FIG. 2 is a plan view of the remote control device used.

FIG. 3 is a block diagram of a control section that performs remote control signal processing.

FIG. 4 is a flowchart of editing operations.

FIG. 5 is an explanatory diagram of a portion of the magnetic tape to be kept and a portion to be deleted.

[Explanation of symbols] 1: Magnetic tape, 1a: Part to keep, 1c: Part to delete, 1d, 1c: Head, 1e, 1f: Offset position, 2
: input terminal, 3: AGC, 4: delay circuit, 5: recording signal processing circuit, 6: recording/reproducing magnetic head, 7: reproduction signal processing circuit, 8: amplifier, 9: output terminal, S1 to S3: switch, 20: remote control device, 21: channel key group, 22: VTR operation key group, 23: jog shuttle key, 24: jog shuttle "on/off" key, 25: jog shuttle "on/off" display LED.

Claims (2)

[Claims] 1. A VTR device in which in a recording mode, an input video signal is sent to a magnetic head and transmitted as it is from a branch point to an output terminal, and in a playback mode, a video signal reproduced by the magnetic head is transmitted to the output terminal, A delay circuit provided in the path from the branch point of the input video signal to the magnetic head and the on signal of the jog shuttle "on/off" key of the remote control device are used to switch the recording mode to the playback mode, and the remote control device switches the recording mode to the playback mode. means for enabling forward/reverse playback, slow playback, etc. in accordance with the operation of a jog shuttle key of the device; and means for setting a recording pause mode by capturing an off signal from the jog shuttle "on/off" key. A VTR device comprising: 2. When the on-signal of the jog shuttle "on/off" key is received, a signal is sent to stop the playback of another VTR device connected to the input terminal, and when the jog shuttle "on/off" key is turned on, 2. The VTR device according to claim 1, further comprising means for transmitting a signal that causes said other VTR device to resume playback by taking in an off signal.