JPH0690866B2 - Disc dubbing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a disc dubbing device, and more particularly, to a disc dubbing device for dubbing information recorded on a disc to a magnetic tape by an automatic reversing tape recorder. The present invention relates to a disk dubbing device that prevents sound breakage due to the end of a magnetic tape.

[Prior Art] When dubbing a song recorded on an analog disc or a digital audio disc onto a magnetic tape with an automatic reversing tape recorder, dubbing is interrupted when the magnetic tape reaches the end in the middle of the song, The last dubbed song is cut off (cutting the sound).

In order to prevent this interruption of sound, conventionally, the playing time of the disk to be dubbed is confirmed in advance, and a magnetic tape having a recording time that can cope with this is used. The recording time of the magnetic tape is represented by the sum of the recording times of the recording track (forward track) when the magnetic tape is running in the forward direction and the recording track (reverse direction track) when the magnetic tape is running in the reverse direction (of one recording track. Recording time is half the recording time displayed on the magnetic tape).

During recording running, when the running direction is reversed from the forward direction to the reverse direction (or from the reverse direction to the forward direction), even with an automatic reversing tape recorder (auto reverse tape recorder), there always exists a non-recordable period of about several seconds. , At the end of the magnetic tape, a detailed dubbing plan must be prepared in advance so that sound interruption does not occur at the time of inversion switching from one recording track to the other recording track.
It is necessary to confirm whether the dubbing is as planned.

If a sound break occurs when the tracks are switched over as described above, the dubbing is temporarily canceled, the tape recorder is set to the recording state for the other recording track, and the pickup of the disc player is set to the start point of the cut music. Dubbing must be done again after placing it at, which requires complicated operation.

(Object of the Invention) The present invention solves the above-mentioned drawbacks of the prior art, and when dubbing from a disk to a magnetic tape,
When switching to recording on the other recording track at the end of one recording track, it is detected that a sound break has occurred on one recording track, and a new recording is made from the beginning of the other recording track where recording continues. The present invention provides a disc dubbing device adapted to re-record sound break information.

(Outline of the present invention) In the present invention, when dubbing a song recorded on a disc onto a magnetic tape, the magnetic tape reaches the end when the disc player is in the playing state of the song, so that the automatic reversing tape When the recorder detects that the magnetic tape end detection information or the tape running direction reversal support information has been generated, the disc player in the playing state is switched to the automatic music selection operation, and the music in the middle of the performance is cued.
When the beginning of the tune is finished, the reproduction standby state is set for a predetermined time. On the other hand, on the tape recorder side, when the end of the tape is detected, the tape is automatically inverted, and when the timing for recording on the other recording track is reached, the playback standby state on the disc player side is automatically released, and the song with the sound cut out begins. Redubbing from.

[Examples] Hereinafter, the present invention will be described based on illustrated examples.

1A and 1B are a block diagram of a recording system path and an operation control system of an automatic reversal type tape recorder and a reproduction system path and an operation control system of a disc player showing an embodiment of the present invention.

The disc player used in this embodiment is for reproducing a digital audio disc.

First, in FIG. 1, the recording system path is a preamplifier 1, a recording compensation circuit 2, a recording / reproducing changeover switch SW ₁ , a magnetic head HD.
It is not different from ordinary tape recorders.

More specifically, a bias signal supply system path, a means for varying the recording compensation characteristic according to the type of magnetic tape, etc. are necessary, but the description thereof is omitted because it is not directly related to the present invention.

Further, T represents a magnetic tape, and arrows F and R respectively represent the traveling directions of the magnetic tape T (F ... normal direction, R ... reverse direction).

Next, the operation control system of the tape recorder will be explained.
CL ₁ is a controller that uses a microcomputer and records (REC), forward playback (FR), reverse playback (R)
R) and other operation buttons and operation instructions are given to each part of the tape recorder based on the detection states from the sensors that detect the operation states of each part of the tape recorder. In this embodiment, a control signal Q for controlling the opening / closing of the changeover switch SW ₁ , a control signal S for controlling the operation of other recording systems, and a control signal U for giving the tape constant speed running (at the time of recording / reproducing) to the magnetic tape drive mechanism. And a control signal V for giving an instruction to invert the tape running direction to the magnetic tape drive mechanism.

The tape recorder used in the invention is a tape recorder of an automatic reversal type (auto reverse) in the traveling direction, DT ₁ , DT ₂
Is a magnetic tape end detector, and in this embodiment, a photoelectric detection method is used, and the light from the light emitting elements L ₁ (DT ₁ ) and L ₂ (DT ₂ ) is applied to the magnetic tape to detect the difference in the amount of reflected light. Light receiving element RC
₁ and RC ₂ to detect the leader tape part attached to the end of the magnetic tape.

DT ₂ is used to detect the end of the magnetic tape when running in the reverse direction of the magnetic tape, and DT ₁ is used to detect the end of the magnetic tape when running in the forward direction of the magnetic tape.

The method of the magnetic tape end detector is not limited to the photoelectric type,
Known methods such as a method of detecting an increase in the tape tension at the end of the magnetic tape or the leader tape (cassette tape), a method of optically or magnetically detecting the stop of rotation of the tape reel (cassette tape) can be used.

The detection output from the tape end detectors DT ₁ and DT ₂ is OR gate O.
It is supplied to the tape end detection terminal of the controller CL ₁ through R _1, and at this time, if the tape recorder is in the forward recording state, the controller CL ₁ outputs the control signal V for reversing the tape running direction.

At the same time, a control signal V for reversing the traveling direction is output at the time of forward recording, or a control signal P indicating that the end of the tape has been detected is output from the controller CL ₁ . The control signal P is supplied to the input terminal P.IN of the disc player, which will be described later, after the output terminal P.OUT.

Next, the disc player shown in FIG. 1 (B) will be described.

D is a digital audio disk, 11 is an optical lens 12
3 shows an optical pickup including the. The digital signal obtained from the pickup 11 is supplied to the digital signal processing circuit 13 to be subjected to error correction, time base correction, and demodulation, and at the same time, an index indicating the contents recorded on the disc contained in the digital signal, the song number (what The information indicating whether the song is a song) and the subcode indicating the time code corresponding to the playing position are separated, and the obtained digital audio signal is converted into an analog signal by the D / A converter 14, and the preamplifier 15 Via audio output terminal AUDIO
・ Output from OUT.

CL ₂ is a controller that uses a microcomputer to control the operation of the disc player, and finds the beginning of the disc in the pickup return direction [tune selection]
(B / MS), Cue in the pickup playing direction (F
-Operating instructions are given to each part of the player based on operation commands from operating buttons such as MS) and play (PLAY) and detection information from each sensor that detects the operating state of each part of the disc player.

In this embodiment, the controller CL ₂ is the pickup 11
A clock is detected from the digital signal from the CPU, the clock is supplied to the digital signal processing circuit 13, and the control signal DS for instructing the disc circuit control and each music selection operation button (F
・ MS, B ・ MS) output a control signal MS for instructing music selection operation.

The music selection mechanism in the present embodiment is configured such that if the music selection button B / MS is operated during the performance, the music being played is cued, and if the music selection button F / MS is operated, the next music is cued. ing.

Next, the control signal input terminal P • IN is connected to the above-mentioned FIG. 1 (A).
The control signal P obtained from the tape recorder shown in FIG. The control signal P is supplied to one input of the OR gate OR ₂ , the operation command by the music selection operation button B · MS is supplied to the other input, and the OR output is supplied to the controller CL ₂ . Therefore, when the control signal P is input, the same operation (cueing operation) as the operation of the music selection operation button B / MS is performed.

Reference numeral 16 is a focus control circuit for controlling the focus of the pickup 11, 17 is a tracking control circuit for the pickup 11, and 18 is a disk rotation speed control circuit. The motor M for rotating the disk D is always operated by an instruction from the controller CL _2. Control to the optimum speed.

The configuration is as described above. Next, the operation will be described with reference to the flowcharts shown in FIG. 2 and FIG.

First, for disc dubbing, the playback button (PLAY) is operated to put the disc player into a playing state. On the tape recorder side, the record button (REC) and the forward or reverse playback buttons (FR, RR) are operated to enter the recording state. With this series of dubbing operations, the output terminal AUDIO / OUT of the disc player
A reproduction audio signal is supplied to the recording signal input terminal REC / IN (FIG. 1A) of the tape recorder directly from (FIG. 1B) or via a recording signal output terminal (not shown) such as an amplifier, This is recorded (dubbed) on the magnetic tape T. FIG. 2 shows an operation flowchart of the tape recorder during dubbing.
First, check with the controller CL ₁ whether the magnetic tape is running in the forward or reverse direction.

When the running direction of the magnetic tape is positive direction, the magnetic tape reaches its end, the end detection by the photoelectric detector DT ₁ is made, end detection information obtained is supplied to the controller CL _1, the controller CL ₁ Based on the arrival of this information, outputs a control signal V indicating a tape traveling direction reversal instruction, and also outputs a control signal P indicating that a tape end detection or a tape traveling direction reversal instruction has been given.

This control signal P is input to the control input terminal P.IN of the disc player via the control signal output terminal P.OUT.

When the running direction of the magnetic tape is determined to be the reverse direction and the end of the magnetic tape is detected, the recording operation is canceled and the running of the magnetic tape is stopped. In this way, the reverse recording is not performed even when the end of the tape is detected in the reverse direction in order to prevent accidentally erasing the already recorded information.

On the other hand, on the disc player side, the playing state (playing state)
In the middle of the process (whether the music is being played or not is judged by performing the performance processing of the index included in the subcode obtained from the digital signal processing circuit 13 by the controller CL ₂ ), the control signal P When input to the B / MS input terminal of the controller CL ₂ (the terminal that receives the music selection command in the return direction) via OR ₂ , the controller CL ₂
A control signal MS instructing the selection of music in the return direction is output, and the tracking control circuit 17 performs the music selection operation such that the pickup 11 returns to the head position of the music being played (the start position of the music).

That is, while the disc player is playing the middle of a song, the tape recorder during dubbing recording issued magnetic tape end detection information during tape running in the forward direction or tape running direction reversal information at the magnetic tape end. In this case, the disc player automatically finds the beginning of the musical piece to be played.

The disc player returns to the playing state after the beginning of the music is finished, but the replay timing is adjusted to the rerecordable timing of the tape recorder, and after that timing, the rerecording is performed in the opposite direction. It

When it is determined that the music is not being played, it is determined whether the performance of all the music is completed. When the performance of all the music is completed, the performance operation is canceled and the automatic return operation is performed.

Here, the cueing operation in the digital audio disc player is almost instantaneously performed. On the other hand, on the tape recorder side, for example, as in the present embodiment, reversal is made by detecting the movement from the recordable portion (magnetic body portion) of the magnetic tape to the leader tape portion (non-recordable) and determining the end of the magnetic tape. As long as the operation is performed, the reversing operation is performed almost at the same time as the detection of the leader tape portion, so that the magnetic head can be brought into contact with the magnetic material portion by only slightly winding the tape from the end of the reversing operation. That is, the time from reversing operation to re-recording is extremely short.

On the other hand, when the method of detecting the increase of the tape tension or the method of detecting the rotation stop of the reel is adopted as the tape end detecting means, the reversing operation is started only after the leader tape is completely wound up. Since the leader tape must be wound up after the operation, it takes some time (approximately the leader tape winding time) before the magnetic material portion appears again.

Therefore, the reproduction start timing of the disc player is delayed by a predetermined time in order to make the reproduction start timing after the cueing of the disc player coincide with the rerecording start timing of the tape recorder, that is, the control signal P waits for the reproduction for a predetermined time after the cueing. By issuing a signal (pause signal), the disc player is placed in a playback standby state, and automatically returns to the playing state again after a predetermined time.

Since the tape recorder continues to record in the opposite direction by the automatic reversing operation, after a predetermined time has elapsed, recording can be performed again from the beginning of the song on the recording track in that direction. The predetermined time here is determined by the characteristics of the traveling direction reversal control means of the mechanism of the tape recorder used in the product, the electrical characteristics of the product, and the like.

As a means for starting reproduction, the control signal P itself is used in addition to the pause signal, and the controller CL of this control signal P is used.
The arrival at ₂ may be delayed by a predetermined time.

On the other hand, in the analog disc player, it takes time to select music, and it may be possible to delay the reverse recording start of the tape recorder.

In any case, the cue playback start time of the disc player and the recordable time of the tape recorder should at least coincide with each other so as not to cause information loss at the start of dubbing. It suffices if the recordable time of the recorder is slightly earlier than the cue playback start time of the disc player.

When such a dubbing process is performed, since a part of the music is recorded as it is on the tape end side, there is no silent section of the tape. When the entire song cannot be recorded, it may be possible to erase the song and create a silent section at the end of the tape. However, it is not clear to the user how long the silent section is. I have no clue what to do. This is not preferable because it gives the user a feeling of anxiety. In addition, there is a problem in that erasing processing is required to create a silent section, and it takes a long time for dubbing.

In this invention, the silent section corresponds to the leader tape,
In the case where the boundary between the magnetic tape and the leader tape is detected and the reversal control is immediately performed, the reversal processing is immediately performed in the silent section, and the last song can be heard from the beginning. This eliminates the user's annoyance and discomfort caused by continuing to hear silence. The dubbing time can also be shortened.

(Effect of the Invention) According to the present invention, when dubbing information recorded on a disk onto a magnetic tape, the normal direction of the magnetic tape,
When recording is performed on one of the recording tracks in the reverse direction, and when the end of the magnetic tape is reached and the disc player is in the middle of playing information, the music selection device of the disc player is activated to find the beginning of information during playback. Since it is possible to perform recording from the beginning of the information on the other recording track, it is possible to perform dubbing without any loss of information due to sound interruption.

Further, when performing dubbing as in the present invention, a part of the music remains on the tape end side, so that the music can be immediately inverted and heard from the beginning in the silent section (leader tape portion). When erasing a part of the music described above, it is not possible to confirm when the tape ends because of this silent section. Therefore, the user is irritated and uncomfortable. In addition, creating a silent section requires a erasing process to make the sound silent, which causes a problem of spending dubbing time. The present invention can eliminate these problems.

Even when the end of the tape is detected by detecting the tape tension, etc., the running is reversed immediately after the winding of the leader tape is finished, so the silent section is only the section for reproducing this leader tape, and the silent section Can be minimized.

[Brief description of drawings]

1A is a block diagram showing a recording system and an operation control system of a tape recorder showing an embodiment of the present invention, and FIG. 1B is a block diagram showing a reproducing system and an operation control system of a disc player. 2 is a flowchart for explaining the operation of the tape recorder shown in FIG. 1 (A), and FIG. 3 is a flowchart for explaining the operation of the disc player shown in FIG. 1 (B). 1 …… Preamplifier 2 …… Record compensation circuit CL ₁ , CL ₂ …… Controller RC ₁ , RC ₂ …… Magnetic tape end detector REC …… Record button FR …… Direct direction playback button

Claims (1)

[Claims] 1. A disc player using at least a cueing device for cueing information, and a tape recorder equipped with at least a magnetic tape end detecting device and a tape running direction reversing control device. In a disc dubbing device for dubbing recorded information onto a magnetic tape, when the end of the tape is detected during recording, the tape recorder performs reversal traveling processing using the tape reversal control means. In the recording state again, in the disc player side, the cueing means operates in response to the magnetic tape end detection operation or the tape running direction reversal control operation, and the cueing of the information that was being reproduced until immediately before is performed. When processing is performed and the tape recorder is ready to re-record, the disc A disc dubbing device, characterized in that a reproducing operation of a player is started.