JPS61284870A - Reproducing/recording device - Google Patents

Abstract

PURPOSE:To prevent the contents from being omitted in case of recording extending over a forward run and a reverse run, by constituting the titled device so that a disk reproducing device becomes a stop state in response to the end of the forward run of a magnetic tape, and the stop state is released, when recording can be executed by the reverse run. CONSTITUTION:Even if reproduction of a CD 2 is not completed, when it reaches a terminal of a recording are of a forward run of a tape 17, the end part of a light penetrating tape is positioned at a part of a sensor 30, and a detecting output is generated. When a signal is generated from an end detecting circuit 31, and auto reverse sue switching device 29 is operated, also a CD player 1 becomes a stop state temporarily, and a scanning position by a beam is fixed substantially. When the tape 17 starts a reverse run, a reverse recording start signal is generated, a signal of a temporary stop release is generated from a microcomputer 14, a switch 28 becomes on, also the CD player 1 goes to a play state, and a reproducing audio signal is recorded in the tape 17 which is executing a reverse run.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a reproducing/recording device that combines a disc reproducing device such as a compact disc (CI) player and an iB tape recording device (tape recorder). [Conventional technology] Compact disc

[Problem that the invention seeks to solve]

By the way, when transferring the recorded contents of a CD to a magnetic tape,
In some cases, it may not be possible to write the entire contents of a CD onto the magnetic tape simply by running the tape recorder in the forward direction.In this case, if the tape recorder is configured for auto-reverse operation, It is possible to record the contents of a CD by running the magnetic tape in one direction.However, it is impossible to instantly reverse the running direction of the magnetic tape and switch the position or connection of the recording head, and the switching time is Therefore, a recording loss (sound dropout) corresponding to the switching time occurs. [Means for solving the problem] The present invention is to solve the problem as described above. reading said digital signal from a recorded disc that has been converted into a
A disk playback device that converts this digital signal into an analog signal and outputs it, a tape running device that can run the magnetic tape in both forward and reverse directions, and a magnetic head that faces the magnetic tape. The magnetic tape is configured to generate a forward recording track on the magnetic tape when the magnetic tape is traveling forward, and to cause a renegotiation recording track to be created on the magnetic tape when the magnetic tape is traveling in reverse; an ifi recording circuit connected to the disk playback device to record an analog signal transmitted by the magnetic tape; a tape end detection device for detecting the end of a recording area during forward running of the magnetic tape; and an end detection output from the end detection device. A switching device responsively switches the running direction of the magnetic tape from forward to reverse and switches the recording track; and one reverse run by switching the tape running direction and/or the recording track by the switching device. a reverse recording start signal generation circuit for obtaining a signal indicating that recording has become substantially possible; The present invention relates to a playback/recording device comprising a control circuit that releases the pause state in response to a start signal and controls the disk playback device to a play state. The disc playback device is paused in response to the end of the forward run.

〔Example〕

Next, a combination device of a CD player and a tape recorder according to an embodiment of the present invention will be described with reference to one drawing. CD player (1) shown surrounded by a dotted line in Figure 1
This is to obtain audio output using Shui's CD (2). On this CD (2), an audio signal (analog signal) is converted into a digital signal and recorded in the form of a spiral track. In addition. This digital signal is E F M (Eight to
FourteenM□duration). Reference numeral 137 is a disk rotating device, which is a part that controls and drives the rotation of CD+2). (4) is an optical head or pickup, which is a device for reading CD+21 optical bits with a laser beam. In addition, this optical head (4
) is equipped with a one-turn mirror. Tracking control is performed from this K. Jumping control of the light beam is performed. (5) is a feeding device for feeding the optical head (4) in the radial direction of the CD (2). (6) is an amplification and EFM demodulation circuit. This is a circuit that amplifies the read output obtained from the head (4) and then returns the EFM signal (14 bits) to the original signal (8 bits). (7) is a digital signal processing circuit that performs amplification and EFM signal processing. Demodulation circuit (This circuit performs error correction of the 8-bit signal obtained from 6J, and separates the main digital flawed code from the sub-digital borrowed code (subcode). (8J
is a digital-to-analog converter, which converts the main digital signal obtained from the power into an audio signal (analog signal) and sends it to the output terminal (9). This is a microcomputer. It performs various controls for the CD player (1). This microcomputer αQ is connected to the memory αυ, the operation section σZ, and the sub digital signal line α3 of the digital signal processing circuit (7). The microcomputer I on the tape recorder side is also connected.The microcomputer Ql reads the sub digital signal (subcode) recorded on the CD (2).Various modes specified by the operation unit σ force Therefore, the microcomputer αQF) outputs the rotation device (3), the head (4), and the feed device (5).
is supplied to. Further, the CD side microcomputer αq is connected to the tape recorder side microcomputer I in order to establish a relationship between the CD player +17 and the tape recorder. The tape recorder on the right side of the drawing consists of a magnetic tape αη hung on a pair of glue wheels σ9σ, a pair of capstans αU9 for running this tape αη forward and reverse, and a pair of pinch rollers (2D, Reel (1
It has a known tape running device consisting of a motor (2) for driving a capstan (A), a (A), and (A) for driving a capstan (a) and (a) and (b) for a capstan. I got it. The tape recorder has a known recording circuit consisting of a recording signal input terminal (251° recording amplifier cl!61. and a recording head assistant, and a playback circuit (not shown). The output terminal of ) is connected to the input terminal of the recording amplifier ■ via a switch (to). is an auto-reverse switching device, which switches the reverse play state in response to the loading and unloading at the end of the 7-way run. To explain in more detail, the first capstan α stage and the first pinch roller ■ are used to move the tape αη forward, and the second capstan Qe and the second pinch roller is used for reverse travel.For this reason, the switching device is configured to bring the first pinch roller (2) into contact with the first capstan αδ during forward travel, and connect the pinch roller (211) to the second capstan (g). When running in reverse, the second pinch roller QD is brought into contact with the second capstan αδ, and the first pinch roller ■ is separated from the first capstan. Switching device for (
(to) further rotates the magnetic head to switch recording tracks. That is, from the first and second forward tracks in stereo recording and playback to the third track for reverse
and change the position of the magnetic head □□□ to the fourth track. Instead of rotating the magnetic head, do you move the magnetic head up and down, or do you arrange 4-channel magnetic heads corresponding to 4 tracks and switch the heads using an electrical circuit? There is no problem in adopting the method of doing so. (to) is a tape end detection device, which in this example is composed of a light sensor that optically detects the end of a light-transmissive tape that continues to the end of the recording area of the cassette tape αη, and a light receiving element (3Oa). It consists of a light source (aob) placed opposite to this via a tape αη.゛This light receiving element (30
From a), the outputs shown in FIG. 2c are obtained corresponding to the passage of the end of the light-transmissive tape. 6υ is a termination loading/unloading circuit, which responds to the narrow horizontal output of the light receiving element (30a) and generates the termination detection signal shown in FIG. 20 in synchronization with the rise of the output. c (21 is a reverse recording start signal generation circuit,
Based on the horizontal narrow output of the light receiving element (30a),
A reverse recording start signal 00 in FIG. 2 is generated in synchronization with the falling edge 1c of the pulse 1. Termination detection circuit (Il
1 and the three reverse recording start signal generating circuits are connected to the microcomputer a41. The microcomputer α is connected to a memory for storing sub-digital signals (subcodes), etc., and an operation unit Q.The operation unit (G) is for giving various commands to the microcomputer α. In response to the termination horizontal thin signal obtained from the termination detection circuit 6υ, the microcomputer α4 outputs a signal that activates the auto-reverse switching device (c), and also outputs a signal that activates the auto-reverse switching device (c).
1) A signal is sent to the microcomputer αQ on the CD side to temporarily stop (Bose) the motor.It also occurs in response to the completion of the switch from forward running to reverse running by the auto-reverse switching device. In response to the output from the reverse recording start signal generation circuit, the microcomputer α4 sends a signal to cancel the pause (Bose), that is, to start play, to the microcomputer α on the CD side.The microcomputer I also performs various controls. In order to execute the operation, it is also connected to the control circuit (g) of the motor +231 (to). (Operation) Next, the operation of this device will be explained. First, the recorded contents of the CD (2) are When you want to move to αη, press the operation panel (to)
Operate the dubbing operation button provided on the screen. As a result, the switch (to) is turned on, and the CD player (17) and the tape recorder are electrically connected.Furthermore, the CD player (1) enters the playing state, and the tape recorder enters the forward running recording state. As a result, the digital signal read from cI)+21 is converted into an analog signal and transferred to the tape αη by the magnetic head.
is recorded, resulting in a forward recording track. After that, even though the playback of the CD (2) has not been completed, when the forward running recording area of the tape (17) reaches the end, a light-transmissive tape end (leader tape) is detected at the sensor (■). 211 (Al) is located, and an output is also generated from the detection shown in No. 211 (Al). The leading edge of the horizontally narrow output of this Figure 2 (Al) corresponds to the boundary between the magnetic tape and the leader tape. When the signal shown in Figure 2 (9) is generated from the termination detection circuit Ca1l based on the waveform of
D player (1) enters a paused state. As a result, after the tape C171 moves slightly forward in the tape section, it starts running in reverse. On the other hand, in the CD player (17), the scanning position by the beam is substantially fixed because it is temporarily stopped. When the tape αη starts running in reverse, the leader tape portion immediately ends and becomes the magnetic tape portion. As a result, the reverse recording start signal (switching completion signal) shown in FIG. The CD player 1υ enters the play state, beam scanning of the next track following the beam scanning position at the start of the pause state starts, and the reproduced audio signal is recorded on the tape αη running in reverse. (Modification) This book The invention is not limited to the embodiments described above, but can be modified.For example, it can be applied to cases in which a tape is run in both forward and reverse directions using a single capstan and a pinch roller. It is also applicable when a tape recorder is incorporated into a capacitive disk player or a piezoelectric disk player.
J3 may be used as one of the sleeves, and may be shared by a CD player and a tape recorder. Alternatively, the reverse recording start signal (switching completion signal) may be formed by a switch that responds to track switching of the magnetic head.Furthermore, if the auto-reverse switching time is approximately constant, as shown in FIG. Trigger the monostable multivibrator at the leading edge of the horizontally narrow end shown in Figure 3 (corresponding to the switching time shown in Bl) (generate a pulse), and set this trailing edge as the reverse recording start point (switching completion point). [Effects of the Invention] As is clear from the above description, it is possible to easily prevent missing information contents when switching from forward driving to reverse driving.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the principle of a combination device of a CD player and a tape recorder according to an embodiment of the present invention;
FIG. 2 is a waveform diagram of each part of FIG. 1. FIG. 3 is a waveform diagram of each part of the modified example. 11J・-CD player, (2)...CD181...
・D/A converter, α(1 (141...Microcomputer, α11 hour...Memory. αη...Magnetic tape, Mouth...Magnetic head, @...
Auto-reverse switching device, 3G...tape end loading/unloading device. 611... Terminal loading/unloading circuit, C10... Recording start signal generation circuit. Figure 2 Figure 3

Claims (3)

[Claims] (1) A disk playback device that reads digital signals from a recorded disk on which analog signals are converted to digital signals, converts the digital signals to analog signals, and outputs the same, and a disk playback device that plays both forward and reverse magnetic tapes. a tape running device capable of running the magnetic tape in a forward direction, and a magnetic head that faces the magnetic tape to generate a forward recording track on the magnetic tape when the magnetic tape is running forward; a magnetic recording circuit configured to generate a reverse recording track on a magnetic tape and connected to the disk playback device so as to record an analog signal obtained from the disk playback device; a tape end detection device that detects the end of a recording area; a switching device that switches the running direction of the magnetic tape from forward to reverse and switches the recording track in response to the end detection output from the end detection device; and the switching device a reverse recording start signal generation circuit for obtaining a signal indicating that recording in reverse has become substantially possible by switching the tape running direction and/or recording track; A reproducing/recording device comprising: a control circuit that controls a disc reproducing device to a paused state, releases the paused state in response to the reverse recording start signal, and controls the disc reproducing device to a play state. (2) The magnetic tape has a magnetic recording area having a first light reflection or light transmission characteristic and a tape end having a second light reflection or light transmission characteristic, and the end detection device is configured to include a magnetic recording area having a first light reflection or light transmission characteristic, and a tape end portion having a second light reflection or light transmission characteristic. an optical sensor disposed near the magnetic head so as to detect the tape end using a difference between the first light reflection or light transmission characteristic and the second light reflection or light transmission characteristic; 2. The reproducing/recording apparatus according to claim 1, wherein the recording start signal generating circuit is a circuit that detects the point of transition from the end of the tape to the magnetic recording area based on the output of the optical sensor. (3) The magnetic head is configured to be movable from the forward recording track to the reverse recording track, and the reverse recording start signal generation circuit is configured to detect when the magnetic head completes movement from the forward recording track to the reverse recording track. The reproducing/recording apparatus according to claim 1, which is a circuit for detecting.