JP2605849B2 - Dubbing system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a dubbing system.

2. Description of the Related Art Conventionally, in a dubbing apparatus of this type, an original recording medium is loaded in a master apparatus as a reproducing apparatus, and a non-recording recording medium is loaded in a slave apparatus as a recording apparatus. At the same time, the recording operation in the slave device is started and dubbing is performed.

[Problems to be Solved by the Invention] In the above conventional example, it is the responsibility of the operator to synchronize the reproduction start in the master device and the recording start in the slave device. It was done manually. However, in a system such as a still video disk recording system that can record audio and video in a mixed manner and record various types of information in various recording modes, the operation of the slaze device is adjusted according to the original recording mode. You have to change the mode. Therefore, in the conventional example, an extremely complicated operation was required to synchronize the master device and the slave device. Therefore, dubbing is started and stopped while monitoring the reproduced video or audio, and the dubbing may be stopped erroneously and recording may be interrupted.

Therefore, the present invention has been made to solve the above-described problems, and a dubbing process of associating image information and audio information recorded on a recording medium with each other and recording them on another recording medium by a simple operation. It is an object of the present invention to provide a dubbing system capable of performing the following.

[Means for Solving the Problems] A dubbing system according to the present invention includes a master device (corresponding to the master device 10 in FIG. 1 in the embodiment) and a slave device (similarly, a slave device 12). A first recording medium (similarly, a magnetic disk 14) in which image information and audio information associated with each other are recorded at different positions is reproduced by the master device, and the image information or the image reproduced by the master device is reproduced. Is a system for recording audio information on a second recording medium (similarly, a magnetic disk 72) different from the first recording medium by the slave device, wherein the master device and the slave device mutually control Additional information for communicating information and associating image information and audio information reproduced by the master device with each other (similarly, audio recording The master device and the slave device are configured to add information such as a corresponding image track number corresponding to the audio and a continuous audio that is set in the processing circuit 52 and record the information on the second recording medium by the slave device. It is characterized by cooperative operation.

[Operation] With the above-described configuration, it is possible to perform a dubbing process in which image information and audio information recorded on a recording medium are associated with each other and recorded on another recording medium by a simple operation without requiring a complicated operation. it can.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
10 is a master device and 12 is a slave device. In the master device 10, 14 is a source magnetic disk, 16 is a spindle motor for rotating the magnetic disk 14, 18 is a servo circuit for controlling the rotation of the spindle motor 16 to a constant, 20
Is a magnetic head, 22 is a head drive circuit for moving and positioning the magnetic head 20 in the radial direction of the magnetic disk 12, 24 is a reproducing amplifier, 26 is a discriminator for discriminating unrecorded / audio / image from the output of the reproducing amplifier 24. Circuit, 28 is a switch, 30 is an audio reproduction processing circuit, 32 is an audio signal output terminal, 34 is an image reproduction processing circuit, 36 is an image signal output terminal, 38 is a microcomputer, RAM and ROM, etc. A control circuit for controlling the whole; 40, a switch for setting the dubbing mode; 41, a switch for moving the magnetic head 20 in the outer circumferential direction of the magnetic disk 14; 42, on the contrary, the magnetic head 20 in the inner circumferential direction of the magnetic disk 14; The switch to be moved, 44 is a communication circuit for communicating control data with the slave device 12, and 46 is a communication terminal.

In the slave device 12, 50 is an audio signal input terminal, 52
Is an audio recording processing circuit, 54 is an image signal input terminal, 56 is an image recording processing circuit, 58 is a switch, 60 is a recording amplifier, 62 is a changeover switch, 64 is a communication terminal, and 66 is for communication with the master device 10. Communication circuit, 68 is an audio output terminal for monitor,
70 is an image output terminal for a monitor, 72 is a copy source magnetic disk, 74 is a spindle motor, 76 is a servo circuit, 78 is a magnetic head, 80 is a head drive circuit, 82 is a reproduction amplifier, 84
Denotes an image reproduction processing circuit, and 86 denotes recording / output from an output of a reproduction amplifier.
A discriminating circuit for discriminating between unrecorded and audio / image, 88 is a control circuit for controlling the entire slave device 12, 89 is a switch for setting the dubbing mode, 90 is a switch for moving the magnetic head 78 to the outer peripheral side, 91 is A switch for moving to the inner circumference side, 92 is a switch for instructing recording of images and sounds when off, and a command for recording only audio when on, 93 is a recording start switch, 94 is a recording stop switch, and 95 is an all for copying all. A switch 96 for instructing a mode (ON) or a single mode (OFF) for duplicating in a group, and 96 is a switch for switching between an image signal from the master device 10 and a reproduced image signal of the image reproduction processing circuit 84.

One group in the single mode refers to a field / frame image without a corresponding sound, an independent sound or an independent continuous sound without a corresponding image, or an image and a sound or a continuous sound corresponding thereto.

The operation of FIG. 1 will be described. 2 and 3 show an operation flowchart of the slave device 12. In the master device 10, the control circuit 38 controls the servo circuit 18 and the motor 16 to rotate the magnetic disk 14 at a constant speed, and moves the magnetic head 20 to a desired track position according to the head movement switches 41 and 42. Even in the slave device 12, the magnetic disk 72
Rotates at a constant speed, and the control circuit 88 is a head movement switch.
The magnetic head 78 is moved to a desired track position in accordance with 90 and 91. Of course, both the master device 10 and the slave device 12 are set to the dubbing mode by the dubbing switches 40 and 89, and the switches 92 and 95 are also set (S
1).

First, a case where all dubbing is designated by the switch 95 will be described. At this time, the process proceeds from S2 to S4, and the slave device
Twelve switches 62 and 96 are connected to the b side. This allows the master device to be connected from the image output terminal 70 during all dubbing.
The reproduced images of the master device 10 can be monitored from the audio output terminal 68. The dubbing operation is started by the start switch 93 (S5), and the control circuit 88 transmits an all dubbing command to the master device 10 via the communication circuit 66 and the communication terminal 64 (S6). The master device 10 thereafter performs the all-dubbing reproduction operation. Subsequently, the slave device 12 transmits a start command to the master device 10, and the master device 10 receives the command and starts reproduction (S7).

When the track that the magnetic head 20 of the master device 10 contacts is an image track (a track on which an image signal is recorded) and has a corresponding audio recording, the switch 28 is set to a
Connect to the contact side, and a magnetic head on the first track of the corresponding audio
20 is moved to supply a reproduction signal to the audio reproduction processing circuit 30. The audio reproduction circuit 30 performs demodulation, de-emphasis processing, noise removal and the like, digitizes the data, and sends the corresponding image track number, self-track number, continuous audio track number, compression ratio, and the like to the control circuit 38, and only the audio data is transmitted. Store it in the attached audio memory. After the accumulation, the switch 28 is switched to the contact b side, the magnetic head 20 is moved to the previous image track, and reproduction is performed. The reproduced signal is applied to an image reproduction processing circuit 34, and is output to an output terminal 36 as a video signal after well-known processing such as de-emphasis and encoding.

Next, the switch 62 is switched to the contact b side, and the determination circuit 86
It is checked whether or not the track that the magnetic head 78 contacts is unrecorded (S8). If the track has been recorded, the magnetic head 78
Is tracked (S9, 10). When an unrecorded track is found, the switch 62 is switched to the contact b side.

Next, it waits for reproduction signal data from the master device 10 (S11). For example, in the case of image data, the switch 58 is connected to the contact b so that an image signal can be recorded.
Subsequently, a command from the master device 10 is received (S1
1) It is determined whether it is a voice or an image or not (S13).

In the case of an image, the image recording processing circuit 56
The frame is discriminated, and the control circuit 88 directly records the image signal for one track on the magnetic disk 72 in the case of the field (S15). In the case of a frame, two adjacent unrecorded tracks are necessary, so it is checked whether or not the adjacent track is unrecorded (S16). If not, the frame is recorded (S17). If the adjacent track is not unrecorded, two adjacent unrecorded tracks are searched over all tracks (S18, 19, 20). After the field recording (S15) or the frame recording (S17), it is checked whether or not all the tracks of the magnetic disk 72 are used (S21). If there is enough room, a reproduction execution command is transmitted to the master device 10 (S25). ).

Receiving this, the master device 10 prepares to output the audio data stored in the audio memory of the audio reproduction processing circuit 30 if there is audio associated with the previous reproduced image. In a manner corresponding to this, the slave device 12 searches for unrecorded tracks (S8, 9, 10), receives from the master device 10 data such as the compression rate of the reproduced sound, the presence / absence of continuous sound, etc., and records the sound. The compression ratio and the like of the processing circuit 52 are set. Subsequently, the master device 10 performs D / A conversion of the audio data stored in the memory of the audio reproduction processing circuit 30 with a clock having a predetermined compression ratio, outputs the audio data from the output terminal 32, and simultaneously transmits an audio recording start command to the slave device 12. Send. According to the audio recording start command (S13), the slave device 12 takes in the audio signal of the input terminal 50 into the audio recording processing circuit 52, performs A / D conversion,
Store in internal memory. After one track is accumulated, it is recorded on the magnetic disk 72 (S23, 24, 25).

The audio recording for one track is specifically performed as shown in FIG. First, if there is an associated corresponding image, the corresponding image track number is set in the audio recording processing circuit 52 (S50, 51). If there is no continuous sound, data indicating no continuation is set in the circuit 52 (S52, 53). If there is continuous sound, the head is sent over all tracks to search for unrecorded tracks (S54, 55, 56).
The track number is set as a continuous track number in the circuit 52 (S57). If there is no unrecorded track, data indicating no continuation is set in the circuit 52 (S58) and the process returns to the first recording position (S59). After S53 and S59, the recording track number and the leading track number are set in the circuit 52 (S60), and the switch 62 is connected to the contact b and the switch 58 is connected to the contact a. The data set as described above is added to the previously stored audio data, and D / A conversion, emphasis, and modulation are performed and recorded on the magnetic disk 72.

As described above, when the image and the sound are duplicated and recorded, and there is an unrecorded track on the magnetic disk 72 (S21), a command prompting the next reproduction operation is transmitted to the master device 10 (S25). If not, master device 10
Then, the operation of the master device 10 and the slave device 12 is stopped (S22).

Next, the case of the single mode in which only one group of recording signals is duplicated will be described. In the single mode, the magnetic head 20 of the master device 10 is moved by the head feed switches 41, 4
Move to the first track of the group that you want to duplicate by step 2. In the slave device 12, the switch 95 is turned off. After this setting (S1), check the switch 92 (S
3) When the switch is off, the switches 62 and 96 are connected to the contact b (S4). Thereafter, basically, the operation is the same as in the case of the all copy mode described above, and the master device 10
After the reproduction / transmission of the group is completed, an end command is transmitted to the slave device 12 (S11), and the slave device 12 is thereby stopped. The master device 10 stops after transmitting the end command.

In the present invention, it goes without saying that the master device 10 and the slave device 12 may be integrated or two recording / reproducing devices may be combined. The communication by the communication circuits 44 and 66 includes RS232C, TTL level communication, HDLC protocol and the like, and is not limited to a specific one.

[Effects of the Invention] As described above, according to the present invention, when a medium in which image information and audio information associated with each other are recorded at different positions from each other is reproduced and recorded on another medium,
Since the cooperative operation is performed so as to add and record additional information for associating the image information and the audio information with each other, for example, even when the image information and the audio information are recorded at different positions on the medium, a stable operation is achieved. Highly accurate dubbing can be performed. That is, the dubbing operation is simplified, and the operability is greatly improved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIGS. 2 and 3 are operation flowcharts. 10: master device, 12: slave device, 30: audio reproduction processing circuit, 26: discrimination circuit, 32: image reproduction processing circuit, 44: communication circuit, 52: audio recording processing circuit, 54: image recording processing circuit, 66:
Communication circuit, 84: image reproduction processing circuit, 86: discrimination circuit

Claims (1)

(57) [Claims] 1. A master device comprising a master device and a slave device, wherein a first recording medium in which image information and audio information associated with each other are recorded at positions different from each other is reproduced by the master device. A system in which the image information or the audio information reproduced by the master device and the slave device are mutually controlled by the slave device on a second recording medium different from the first recording medium. The master device and the slave device perform information communication, add additional information for associating the image information and the audio information reproduced by the master device with each other, and record the information on the second recording medium by the slave device. A dubbing system, wherein the dubbing system is configured to cooperate with a device.