JP3623361B2 - Playback device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a reproducing apparatus having a plurality of modes such as a radio reception mode in addition to a reproduction mode for reproducing a cassette tape, for example.
[0002]
[Prior art]
12A and 12B are diagrams showing an internal mechanism of a conventional reproducing apparatus, in which FIG. 12A shows a state in which a cassette tape is not loaded, and FIG. 12B shows a state in which a cassette tape is loaded. Here, reference numeral 100 denotes a cassette holder that can move in a direction perpendicular to the paper surface. A loading / eject arm 101 is rotatably attached adjacent to the cassette holder 100. A protruding portion (not shown) that engages with a groove 103 provided along the moving direction of the cassette holder 100 is provided at the distal end portion 102 of the loading and ejecting arm 101. A spring 105 is attached to the fulcrum 104 of the loading and ejecting arm 101 to apply an elastic force in a direction to return (discharge) the cassette tape to be mounted. The spring 105 is in contact with a protrusion 107 provided on the loading mechanism 106. A part of the loading mechanism 106 is actuated by a spring 105 via a protrusion 107.
[0003]
Next, the operation will be described.
When a cassette tape is inserted into the apparatus, the loading / ejection arm 101 rotates in the direction of the arrow, and the spring 105 abuts against the projection 107, giving an elastic force in the direction of returning to the cassette tape to be inserted. However, the loading mechanism 106 is operated. Then, as shown in FIG. 12B, when the cassette tape is loaded and loading is performed to some extent, the spring 105 is released from the projection 107 and becomes free, and there is no elastic force for returning the cassette tape.
[0004]
[Problems to be solved by the invention]
Since the conventional playback apparatus is configured as described above, for example, in the case of having a plurality of modes such as a radio reception mode in addition to a playback mode for playing back a cassette tape, a certain amount of loading is performed and the cassette tape is loaded. When switching from the playback mode to another mode while the elastic force to return is gone, the loading mechanism stops at that time, and the elastic force to return the cassette tape is gone, There is a problem that the loading mechanism stops in that state, that is, in a very halfway state.
[0005]
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a reproducing apparatus in which the loading mechanism does not stop in an incomplete operation state.
[0006]
[Means for Solving the Problems]
Reproducing apparatus according to the present invention, the playback device you play recording member, a detection switch for detecting the loading and unloading of the recording member into the device, while carrying the recording member inserted into the apparatus to the playback position A loading mechanism for carrying the recording member out of the apparatus from the reproduction position, a drive source for driving the loading mechanism, and a mode changeover switch for switching from a reproduction mode for reproducing the recording member to an operation mode of another recording member or a radio reception mode. If, when the detection switch detects the insertion of the recording member, together with driving the driving source, a reproducing mode for reproducing the recorded member by the mode change-over switch before the operation completion of the loading mechanism of the other recording members operating mode or radio when switched to the receiving mode, and a control means for stopping the driving of the driving source after a predetermined time has elapsed Than it is.
[0007]
In the reproducing apparatus according to the present invention, the control unit drives the drive source when the detection switch detects the insertion of the recording member, and the detection switch does not detect the insertion of the recording member during a predetermined time. At this time, the driving by the driving source is stopped.
[0008]
The reproducing apparatus according to the present invention includes an eject switch for discharging the recording member, and the control means drives the drive source when the eject switch is pressed, and the recording member is detected by the detection switch during a predetermined time. When no discharge is detected, the driving by the driving source is stopped.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described below.
Embodiment 1 FIG.
FIG. 1 is a block diagram showing the configuration of a playback apparatus according to Embodiment 1 of the present invention. In the figure, 2 is a switch member as a detection switch for detecting insertion / removal of a cassette tape 1 (referred to as “1 ′” at a reproduction position) as a recording member in the reproduction apparatus, and 3 is inserted into the reproduction apparatus. A loading eject mechanism unit serving as a loading mechanism for carrying the cassette tape 1 into the reproduction position and carrying the cassette tape 1 out of the reproduction apparatus from the reproduction position. Reference numeral 4 denotes a control circuit section as a control means composed of a microcomputer for performing various controls, 5 denotes a motor section as a drive source for driving the loading eject mechanism section 3, and 6 denotes a switch member as a mode changeover switch for switching modes. . This playback apparatus has a plurality of modes such as a radio reception mode in addition to a playback mode for playing back a cassette tape. Any one mode can be selected by the switch member 6.
[0010]
FIG. 2 is a block diagram specifically showing the functional configuration of the control circuit unit 4 shown in FIG. In the figure, 7 is a pack-in detection signal detector for detecting a pack-in detection signal (T-LOAD) from the switch member 2. The pack-in detection signal becomes Lo when the cassette tape 1 is inserted and becomes Hi when the cassette tape 1 is ejected. Reference numeral 8 denotes a mode transition command signal detection unit that detects a mode transition command signal from the switch member 6. Reference numeral 9 denotes a mechanical operation state determination unit, and reference numeral 10 denotes a mechanical power supply control unit that controls a mechanical power supply circuit 11 that supplies power to the motor unit 5 based on a command from the mechanical operation state determination unit 9. The mechanical operation state determination unit 9 supplies power to the motor unit 5 via the mechanical power supply control unit 10 and the mechanical power supply circuit 11 when the pack-in detection signal detection unit 7 detects a Lo pack-in detection signal. Thereby, power loading is performed. Further, when the mechanical operation state determination unit 9 is switched from the reproduction mode to another mode by the mode transition command signal detection unit 8 after the Lo pack-in detection signal is detected, the mechanical operation state determination unit 9 supplies the motor unit 5 immediately after that. Instead of stopping the supply of power, the supply of power to the motor unit 5 is stopped after a lapse of a predetermined time, for example, after 2 seconds. The control signal sent from the mechanical power supply control unit 10 to the mechanical power supply circuit 11 is “T-ON”. When T-ON is Hi, power is supplied to the motor unit 5, and when T-ON is Lo, supply of power to the motor unit 5 is stopped.
[0011]
Next, the operation will be described.
FIG. 3 is a flowchart showing the operation of the reproducing apparatus according to the first embodiment. When the Lo pack-in detection signal is detected, the control circuit unit 4 supplies power to the motor unit 5 via the mechanical power supply circuit 11 and starts power loading (step ST301).
[0012]
When such power loading is started, it is first checked whether or not the cassette tape 1 is in the playback mode (step ST302). If the cassette tape 1 is in the playback mode, the motor unit 5 is supplied with power. Continue (step ST303). That is, as shown in the timing chart of FIG. 4, while T-LOAD is Lo, T-ON is always Hi. However, there is a chattering time of about 100 msec when the control circuit 4 does not accept a chattering signal from when T-LOAD becomes Lo until T-ON becomes Hi.
[0013]
On the other hand, if it is determined in step ST302 that the playback mode of the cassette tape 1 is not being used, that is, if the playback mode is changed to another mode, it is determined whether it is within 2 seconds from the start of power loading (step S302). (ST304) If YES, power is supplied to the motor unit 5 (step ST303), but after 2 seconds have elapsed, supply of power to the motor unit 5 is stopped (step ST305). That is, as shown in the timing chart of FIG. 5, when T-LOAD becomes Lo (however, there is a chattering time of about 100 msec), T-ON becomes Hi, and T-ON becomes Lo after 2 seconds. .
[0014]
As described above, according to the first embodiment, when the playback mode is changed to another mode during power loading, power is supplied to the motor unit 5 for 2 seconds from the start of power loading. Therefore, it is possible to prevent the loading mechanism from being stopped in a halfway state.
[0015]
Embodiment 2. FIG.
The configuration of the playback apparatus according to the second embodiment of the present invention is basically the same as that shown in FIGS. 1 and 2, except that the control circuit unit 4 operates in addition to the operation shown in the first embodiment. When the insertion of the cassette tape 1 is detected by the switch member 2, power is supplied to the motor unit 5 and the insertion of the cassette tape 1 is detected by the switch member 2 during a predetermined time, for example, after 2 seconds. When it is not performed, the supply of power to the motor unit 5 is stopped.
[0016]
Next, the operation will be described.
FIG. 6 is a flowchart showing the operation of the reproducing apparatus according to the second embodiment. When the control circuit unit 4 detects a Lo pack-in detection signal for starting power loading (step ST601), the control circuit unit 4 supplies power to the motor unit 5 via the mechanical power supply circuit 11 and sets a timer for 2 seconds. (Step ST602).
[0017]
If a Hi pack-in detection signal is detected during the two seconds (step ST603), the supply of power to the motor unit 5 is stopped in order to stop the loading because it is assumed that a loading error has occurred. (Step ST604).
[0018]
On the other hand, if the Lo pack-in detection signal remains for 2 seconds, it is determined whether the timer is over (step ST605). If NO, the process returns to step ST603 and the above processing is performed. Loading is completed as usual (step ST606). That is, as shown in the timing chart of FIG. 7, when T-LOAD becomes Lo (however, there is a chattering time of about 100 msec), T-ON becomes Hi, and T-LOAD becomes Hi for 2 seconds thereafter. Then T-ON becomes Lo.
[0019]
As described above, according to the second embodiment, if a Hi pack-in detection signal is detected within a predetermined time, for example, 2 seconds after the start of power loading, the loading is regarded as having occurred. Since the cassette tape is inserted halfway, even when the so-called “chon push” is performed, it is possible to prevent the situation where the loading continues to operate without stopping. Is obtained.
[0020]
Embodiment 3 FIG.
FIG. 8 is a block diagram showing the structure of a playback apparatus according to Embodiment 3 of the present invention. In the figure, reference numeral 12 denotes a switch member as an eject switch for discharging the cassette tape 1. Other than this, the description is omitted because it is the same as that shown in FIG.
[0021]
FIG. 9 is a block diagram specifically showing the functional configuration of the control circuit unit 4 shown in FIG. In the figure, reference numeral 13 denotes an eject signal detector for detecting an eject signal from the switch member 12. Then, in addition to the operations described in the first and second embodiments, the mechanical operation state determination unit 9 supplies power to the motor unit 5 when the switch member 12 is pressed, and for a predetermined time, for example, 5 When the cassette tape 1 is not detected by the switch member 2 during the second, the supply of power to the motor unit 5 is stopped.
[0022]
Next, the operation will be described.
FIG. 10 is a flowchart showing the operation of the reproducing apparatus according to the third embodiment. When the control circuit unit 4 detects the ejection from the switch member 12 (step ST1001), it supplies power to the motor unit 5 via the mechanical power supply circuit 11 and sets a timer for 5 seconds (step ST1002). .
[0023]
If the Hi pack-in detection signal is not detected during this 5 seconds, that is, if so-called backout is not detected (step ST1003), it is determined whether the error timer is OVER (step ST1004). If NO, the process goes to step ST1003. Returning to the above process, if YES, together with the determination result in step ST1003 being YES, the ejection process is terminated and the supply of power to the motor unit 5 is stopped (step ST1005). That is, as shown in the timing chart of FIG. 11, when T-LOAD does not become Hi within 5 seconds after EJ-KEY indicating the eject input at Lo becomes Lo, T-ON becomes Lo.
[0024]
As described above, according to the third embodiment, when the Hi pack-in detection signal cannot be received within a predetermined time, for example, 5 seconds after the ejection is started, it is considered that the ejection has failed and the power supply is stopped. Thus, even when the eject is pushed halfway, so-called “chon push” is performed, it is possible to prevent the situation where the eject operation is continued without stopping. .
[0025]
In the embodiment described above, the cassette tape is exemplified as the recording member to be reproduced. However, other recording members such as CD and MD can be similarly implemented.
[0026]
【The invention's effect】
As described above, according to the present invention, the drive source is driven when insertion of the recording member is detected by the detection switch, and the recording member is reproduced by the mode changeover switch before the operation of the loading mechanism is completed. when switched to the operating mode or the radio reception mode in another recording member, so constructed as to stop driving of the driving source after a predetermined time has elapsed, it is possible to prevent a situation that the loading mechanism is stopped in limbo There is an effect.
[0027]
According to the present invention, when the insertion of the recording member is detected by the detection switch, the driving source is driven, and when the insertion of the recording member is not detected by the detection switch for a predetermined time, the driving source is driven. Therefore, even when the recording member is inserted halfway, it is possible to prevent a situation in which the loading operation continues without stopping.
[0028]
According to the present invention, the drive source is driven when the eject switch is pressed, and the drive by the drive source is stopped when the discharge of the recording member is not detected by the detection switch for a predetermined time. Therefore, even when the eject is pushed halfway, there is an effect that it is possible to prevent a situation in which the eject operation continues to be performed without stopping.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the configuration of a playback apparatus according to Embodiment 1 of the present invention.
2 is a block diagram specifically showing a functional configuration of a control circuit unit shown in FIG. 1; FIG.
FIG. 3 is a flowchart showing the operation of the playback apparatus according to the first embodiment.
FIG. 4 is a timing chart showing the operation of the playback apparatus according to the first embodiment.
FIG. 5 is a timing chart showing the operation of the playback apparatus according to the first embodiment.
FIG. 6 is a flowchart showing the operation of the playback apparatus according to the second embodiment.
FIG. 7 is a timing chart showing the operation of the playback apparatus according to the second embodiment.
FIG. 8 is a block diagram showing a configuration of a playback apparatus according to Embodiment 3 of the present invention.
9 is a block diagram specifically showing a functional configuration of a control circuit unit shown in FIG. 8. FIG.
FIG. 10 is a flowchart showing the operation of the playback apparatus according to the third embodiment.
FIG. 11 is a timing chart showing the operation of the playback apparatus according to the third embodiment.
FIG. 12 shows an internal mechanism of a conventional playback apparatus.
[Explanation of symbols]
2 switch member (detection switch), 3 loading eject mechanism part (loading mechanism), 4 control circuit part (control means), 5 motor part (drive source), 6 switch member (mode changeover switch), 12 switch member (eject switch) ).

Claims (3)

In playback device play recording member,
A detection switch for detecting insertion / removal of a recording member in the reproducing apparatus;
A loading mechanism for carrying the recording member inserted into the reproduction apparatus into the reproduction position and carrying the recording member out of the reproduction apparatus from the reproduction position;
A drive source for driving the loading mechanism;
A mode changeover switch for switching from a reproduction mode for reproducing the recording member to an operation mode of another recording member or a radio reception mode ;
Wherein when the detection switch detects the insertion of the recording member, together with driving the drive source, the operation of the mode switch by the recording member other recording member from the playback mode to play before the operation completion of the loading mechanism And a control unit for stopping the driving of the driving source after a predetermined time has elapsed when the mode or the radio receiving mode is switched . The control means drives the drive source when insertion of the recording member is detected by the detection switch and stops driving by the drive source when insertion of the recording member is not detected by the detection switch for a predetermined time. The reproducing apparatus according to claim 1, wherein: Eject switch for discharging the recording member,
The control means drives the drive source when the eject switch is pressed, and stops the drive by the drive source when discharge of the recording member is not detected by the detection switch for a predetermined time. The reproducing apparatus according to claim 1 or 2.

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