JP2589294B2 - Disk dubbing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a disc dubbing apparatus suitable for dubbing playback information of a disc onto a tape.

(Prior art and its problems) When dubbing music recorded on an analog audio disk or digital audio disk to a magnetic tape, one recording track of the magnetic tape (formed by running the magnetic tape in the forward or reverse direction). When dubbing is performed on a recording track, and the dubbing is continued by switching from the recording track which had been recording with the arrival of the end of the magnetic tape to the other recording track, and the music tape is being reproduced during the reproduction of the music, When the end comes, a part of the music to be recorded is lost, resulting in a so-called out-of-tail recording.

In the event that the trailing edge is recorded, the disc player is switched to the cueing operation, the beginning of the tune that has reached the trailing edge is performed, and then the recording is not stopped or in a standby state. You have to prepare for the recording and dub again from the beginning of the piece.

Further, as a method for preventing the recording of the trailing edge, it is necessary to make a detailed dubbing plan in advance.

In other words, a magnetic tape having a total recording time which has a sufficient margin with respect to the total playing time of the disk is used, and the recording time of the magnetic tape is the recording time when the magnetic tape is traveling in the forward direction (recording in the forward direction recording track). Time) and the recording time during reverse traveling (recording time in the reverse recording track), and after the recording in one of the recording tracks in the forward direction or the reverse direction is completed, the recording to the other recording track is continued. When recording, even with an automatic reciprocating tape recorder (auto-reverse tape recorder), there is a recording disable period of several seconds.
It is necessary to monitor whether dubbing is being performed as planned.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned drawbacks of the prior art, and to provide a disc player provided with a cueing means for at least cueing information, and at least recording during a recording operation. In a disk dubbing apparatus for dubbing information recorded on a disk to the magnetic tape by using a tape recorder having an after monitor capable of listening to a reproduction sound from the magnetic tape, the after-recording of the magnetic tape during recording is performed. If a non-signal period of a predetermined time or more continues after the monitor output is continuously supplied, it is determined that the magnetic tape has reached the leader tape section provided at the end of the magnetic tape, and the disc player is determined to have reached the leader tape section. A disc dubbing device characterized in that the cueing means is operated to perform cueing processing of information being reproduced. The above object is achieved by the arrangement.

(Embodiment) A feature of the present invention is that a monitor output for notifying a tape running obtained from a tape recorder at the time of recording is connected to an amplifier via a disk player, and the presence or absence of the monitor output is detected by a disk pooer for a predetermined period (5 seconds). ~
10 seconds) When it is detected that the monitor output has stopped (end of tape), it is determined that the tape recorder has reached the end of the tape. If the disc player is playing a song, back skipping is performed. Return one song to the beginning] and return to the beginning of the song being played to enter the standby state.

Subsequently, after exchanging the tape of the tape recorder or switching to B-side recording, dubbing is performed again from the beginning of the music being played.

FIG. 1 shows a connection between an amplifier, a disk player (hereinafter referred to as a CD player) and a tape recorder. 1 is a tape recorder section, 2 is a CD player section, and 3 is an amplifier section.

FIG. 2 is a block diagram of a device provided in the CD player for detecting the presence or absence of a monitor output.
The monitor output applied to the monitor output terminal T.IN is an after-monitor output immediately reproduced by the reproducing head after recording on the magnetic tape in the 3-head type tape recorder independent of the recording / reproducing magnetic head.

The input monitor output is supplied to the tape input terminal TAP of the amplifier unit 3 via the output terminal T • OUT of the CD player unit 2.
• A part of the signal is supplied to IN and a part of the signal is supplied to a mixing circuit to mix the right channel signal R and the left channel signal L, and supplied to a known signalless period detection circuit via a band pass filter BPF. .

The BPF is for removing noise and the like, and extracts a signal in a substantially audio frequency band (30 Hz to 15 KHz).

The non-signal period detection circuit outputs a detection signal D when the monitor output from the BPF stops for a certain period (5 to 10 seconds).

This detection signal D is supplied to a back-skipping command input terminal BS of a controller CL for controlling the CD player shown in FIG.
A, it is supplied through the OR gate OR _1, the controller CL
Outputs a cueing (rewinding) instruction output MS to enter a back-skipping state known per se.

Here, the configuration and operation of the CD player (digital audio disc player) shown in FIG. 3 will be described.

First, CD is a digital audio disk, 12 is an optical pickup having an objective lens 11, and 13 is a digital signal processing circuit, which performs error correction, time axis correction, demodulation processing on the digital signal obtained from the pickup 12 and A sub-code indicating an index such as a music number and a time code indicating a performance position included in the digital signal is separated.

A digital / analog converter (D / A converter) 14 converts a digital audio signal obtained from the digital signal processing circuit 13 into an analog audio signal. The obtained analog audio signal is output from the audio output terminal to the recording input terminal TAPE / IN of the table recorder via the preamplifier 15 (the audio signal supply from the disk player to the tape recorder is performed by the recording input / output terminal of the amplifier. May go through). Next, 16 is a focus control device for the pickup 12, 17 is a tracking control device for the pickup 12, and 18 is a disk rotation control device for controlling the rotation speed of the disk, which controls the rotation of a motor M for rotating the disk. .

Next, an operation control system of the disc player will be described.

The operation control system shown in this embodiment is a system using a microcomputer, and is performed by a controller CL including a central processing unit CPU, a RAM and a ROM.

The CPU has operation instructions by operation buttons such as playback (PLAY), standby (PAUSE), etc., subcodes obtained from the digital signal processing circuit 13, and various sensors (not shown) for detecting the operation state of each section of the disc player. These detection information is supplied, and based on the information, an operation control instruction is given to each part of the player. Further, a digital signal from the pickup 12 is input and a clock is extracted therefrom, and the obtained clock is supplied to a digital signal processing circuit 13. The control signal PS is a standby control signal, and is used as a tracking control device.
The pickup 17 is supplied to the pickup 17 so that the pickup 12 is locked at the previous reproduction position, and the disc player is set in a reproduction standby state.
The control signal DS is a disk rotation control instruction signal.

In the CD player having the configuration described above, if the CD player is playing in the middle of a song,
When the beginning of the music being played is searched by the back skip and the sub-code indicating the start of the music is detected, the cueing instruction output MS is deleted, and the instruction output F for instructing the detection of the sub-code at the beginning of the music is output, and the AND gate AND , CD players wait command input PAUSE through the OR gate OR ₂ is supplied to the controller CL enters a standby state.

The other input of the AND gate AND is supplied with the Q output from the flip-flop FF. This FF is the detection signal D
(Q output "high level") and reset by the playback instruction PB of the CD player.

Accordingly, the FF is set together with the shift to the back-skipping operation by the detection signal D, the Q output becomes "high level", the tune start detection instruction output F is added, and the standby command is output from the AND gate AND.

Next, the tape of the tape recorder is replaced, or the tape is switched to record on a track in a direction opposite to that of the previously recorded track, and then dubbing is started again.

Here, at both ends of the magnetic tape, there is a leader tape portion on which a magnetic material is not applied. Since recording is not performed in this leader tape portion, an after-monitor output is naturally not obtained and the running time of the leader tape portion is not obtained. In some cases, the detection signal is output from the no-signal-period detection circuit shortly after the start of dubbing, so that there is an inconvenience that back-skipping is erroneously performed.

In order to prevent such an undesired malfunction, the no-signal detection circuit of the present invention is provided only when the after-monitor output of the magnetic tape has been supplied for a certain period of time and a no-signal period of a predetermined period or more has arrived. It is configured to output a detection signal D.

(Effects of the Invention) As described above, according to the present invention, the backing skip state is formed by obtaining the monitor signal from the tape recorder unit, but the reliability of the dubbing is not reduced. The effect that high dubbing can be easily obtained is achieved.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a CD player connected to a tape recorder and an amplifier for dubbing, and FIG.
FIG. 3 is a block diagram showing a circuit configuration for obtaining a detection signal D provided in the player section, and FIG. 3 is a block diagram showing a configuration of a CD player. DESCRIPTION OF SYMBOLS 1 ... Tape recorder part, 2 ... CD player part, 3 ... Amplifier part, D ... Detection signal, 11 ... Objective lens, 12 ... Pickup, 13 ... Digital signal processing circuit, 14 ... D / A converter, 16 ... Focus control, 17… Tracking control, 18…
Disk rotation control.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Kato Hajime 3-14-2 Shimotani, Taito-ku, Tokyo Aiwa Corporation Kanasugi Center (56) References 1956-90450 (JP, A)

Claims (1)

(57) [Claims] 1. A disc player having at least a cueing means for locating information, and a tape recorder having at least an after-monitor capable of listening to a reproduced sound from a magnetic tape recorded during a recording operation. In a disk dubbing apparatus for dubbing information recorded on a disk onto the magnetic tape, a non-signal period of a predetermined time or more after the after-monitor output of the magnetic tape is continuously supplied during recording. If the continuation is continued, it is determined that the magnetic tape has reached the leader tape portion provided at the end of the magnetic tape, and the cueing processing of the information being reproduced by operating the cueing means of the disc player is performed. A disk dubbing apparatus characterized in that it is performed.