JP2532594Y2 - Tape recorder with alarm function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application field] The present invention relates to a tape recorder with an alarm function suitable for being applied to a tape recorder having a remote control function such as a remote control device.

[Related Art] In recent years, portable headphone stereo tape recorders (for example, inner type headphone stereos), which can easily listen to music and the like on commuting trains and school trains, have rapidly become widespread.

Since such a headphone stereo is small, the main body is often used in a bag, a bag, or the like.

Therefore, without operating the operation switch of the main body,
Means have been proposed for changing the operation state of the tape recorder.

As an example of such means, there is a remote control device (hereinafter, referred to as a remote control) provided in the middle of the cord of the headphone, as is well known. By operating this, the operation state is changed.

FIG. 3 shows such a headphone stereo 50 including an operation control system.

As shown in FIG. 3, when the operation state of the headphone stereo 50 is changed by the operation switch 2 provided in the middle of the headphone cord 51, the mode signal Sa is sent to the mechanical controller 3 composed of a microcomputer or the like.
Is output.

The mechanical controller 3 controls each circuit (not shown) based on the mode signal Sa.

At this time, when the reproduction mode is selected by the operation switch 2, the reproduction signal Sf is read from the reproduction head 10.

The bass of the reproduced signal Sf is corrected by the equalizer 11, the S / N ratio is improved by the noise reduction circuit 12, and then the volume is adjusted by using the variable resistor 13.

The reproduction signal Sf adjusted to a desired volume is supplied to the main amplifier 7.
Is output from the stereo headphone 8 via the.

[Problems to be Solved by the Invention] By the way, in such a headphone stereo with a remote control function, the operation state can be changed by remote control even when the main body is put in a bag, a bag, or the like. Although improved and very convenient, there is a problem that the operation state, that is, the operation mode such as the current forward reproduction mode or the reverse reproduction mode, cannot be confirmed.

In view of the above, the present invention solves such a conventional problem with a simple configuration, and proposes a tape recorder with an alarm function capable of audibly confirming an operation state.

[Technical Means for Solving the Problems] In order to solve the above-mentioned problems, in the present invention,
Signal reading means for reading a signal from a recording tape, signal processing means for processing a signal read by the signal reading means, amplification means for amplifying an audio signal processed by the signal processing means, and amplification by the amplification means A speaker unit for outputting an audio signal as sound, an operation switch for generating a signal for selecting an operation mode, control means for controlling switching to the selected operation mode by a signal from the operation switch, and a selected operation mode A tape recorder having a detecting means for detecting a traveling direction of a recording tape at a time and generating a detection signal, wherein an alarm signal generating means for generating an alarm signal, and an operation wherein an audio signal is selected from a time of generation of an operation signal A muting means for muting for a predetermined period after the mode is started; A different signal is generated for each recording tape traveling direction based on the detection signal generated at the step and a signal from the operation switch, and the alarm signal generating means generates a different signal for each recording tape traveling direction generated by the control means. An alarm signal is generated based on the alarm signal, and the alarm signal generated by the alarm signal generating means is output as a sound from a speaker unit during a muting period by the muting means.

[Operation] In this configuration, when the operation state is changed by a remote controller or the like, a mode signal (a signal for forward reproduction or reverse reproduction) Sa corresponding to the operation state is supplied from the operation switch 2 to the control means 3.

The control means 3 creates a control signal Sc and sends it to the alarm oscillator control means 5.

The alarm oscillator control means 5 generates a different control signal Sd according to the operation state, and thereby controls the oscillation state of the alarm oscillator 6. Control signal
An oscillation output modulated by Sd, that is, an alarm signal Se is generated in the headphone 8 or the like via the main amplifier 7.

Therefore, it is possible to confirm whether or not the main body is operated as operated by the difference in the content of the alarm sound generated when the operation switch 2 is operated.

In the auto-reverse mode, it is possible to audibly confirm in which direction the vehicle is traveling (forward direction, reverse direction) without looking at the main body.

[Embodiment] Next, a case where an example of a tape recorder with an alarm function according to the present invention is applied to a portable headphone stereo will be described in detail with reference to FIG.

FIG. 1 is a diagram showing a configuration of a tape reproducing system in a tape recorder with an alarm function according to the present invention.

The headphone stereo 1 in this embodiment exemplifies a case where, in addition to a function in which each mode state can be confirmed by an alarm sound, a battery exhaustion notification function that can also emit an alarm sound for notifying the battery exhaustion is added. .

In FIG. 1, reference numeral 1 denotes a headphone stereo. When the cassette tape is mounted, the headphone stereo 1 performs reproduction and other operations in accordance with the operation of the operation switch 2.

First, when the reproduction mode is selected by the operation switch 2, a mode signal Sa corresponding to the reproduction mode is supplied to the mechanical controller 3 as the control means.

Next, in the mechanical controller 3, corresponding circuits (not shown, but indicating a drive motor control circuit or the like) are controlled in accordance with the mode signal Sa. The mechanical controller 3 is supplied with a detection signal Sb generated by detecting the running direction of the tape or the tape stopped state by the mechanical state detection switch 4.

First, in the case of forward reproduction, the mechanical controller 3 generates a control signal Sc as shown in FIG. 2A from the mode signal Sa and the detection signal Sb in the forward state. This is output to the alarm oscillator control means 5.

The alarm oscillator control means 5 generates a control signal Sd based on the control signal Sc so that an alarm sound (intermittent sound) corresponding to each mode is oscillated in the alarm oscillator 6 and sends out the control signal Sd to the alarm signal oscillator 6. You.

In the forward reproduction mode, the alarm signal generator 6 sends an alarm signal Se to the main amplifier 7 so that an alarm sound is generated continuously over a period of, for example, 300 msec.
Is supplied.

The frequency of the alarm signal Se, that is, the oscillation frequency of the alarm oscillator 6 can be selected to be, for example, a frequency signal of about 3 KHz so that it is easy to hear, but can be changed within the audible frequency range.

The alarm signal Se is supplied to the headphone 8 via the main amplifier 7, and an alarm sound is continuously generated from the headphone 8 for 300 msec.

By this alarm sound, it can be confirmed that the reproduction is the forward reproduction.

Note that this alarm sound is automatically generated during a muting period (for example, 800 msec) after the key operation.

This is to prevent the alarm sound from interfering with the reproduced sound.

After the playback mode is auditorily confirmed by the alarm sound, the playback signal Sf read from the playback head 10 is subjected to the same processing as that of the conventional headphone stereo 50 shown in FIG. Is output.

Next, the case where the mechanical state detection switch 4 outputs a detection signal Sb indicating the reverse state to the mechanical controller 3 will be described.

At this time, the mechanical controller 3 generates a control signal Sc for reverse reproduction as shown in FIG. 2B, for example, and sends it to the alarm oscillator control means 5.

As a result, the control signal Sd for reverse reproduction is output to the alarm oscillator 6 by the alarm oscillator control means 5, and the oscillation state is controlled.

In this example, the control signal Sd causes the alarm to sound twice every 100 msec.

Also in the fast forward and rewind modes (FF, REW), the mode is detected from the operation switch 2 and the mechanical state detection switch 4 as in the reproduction mode.

As a result, in this mode, the mechanical controller 3
Generates a control signal Sc as shown in FIG. 2C, for example, and sends it to the alarm oscillator control means 5.

In the alarm oscillator 6, the oscillation output is interrupted based on the control signal Sd supplied from the alarm oscillator control means 5. In the figure, the alarm sounds once only for 100 msec.

In the stop mode, as shown in FIG. 2D, the alarm sounds only for a very short period (for example, 50 msec).
The control system is configured.

On the other hand, in the single reciprocating playback mode or the auto-reverse mode (continuous playback mode), when one-sided playback is completed, the tape running may be temporarily stopped.

In this case, the mode signal Sa from the operation switch 2 is unchanged because a new operation mode is not selected, but the detection signal Sb from the mechanical state detection switch 4 is changed to indicate the tape stopped state. .

Therefore, based on the detection signal Sb and the contents of the initial mode setting (auto-reverse mode or one-reciprocal reproduction mode), the mechanical controller 3 controls the traveling state corresponding to the auto-reverse mode or one-reciprocal reproduction mode, Alternatively, a control signal Sc corresponding to the reverse traveling is generated.

Therefore, the alarm sound shown in FIG. 2A is reproduced during forward reproduction, and the alarm sound shown in FIG. B is reproduced during reverse reproduction.

As described above, when the operation mode is changed, a different alarm sound according to the operation state is output from the headphone 8 using the muting period, so that the mode setting of the main body is not visually confirmed. The operation state can be recognized only by hearing.

Further, the control signal Sc is generated by the mechanical controller 3 based on the mode signal Sa and the detection signal Sb, and the alarm sound is generated based on the control signal Sc. Therefore, it is possible to output the correct alarm sound according to the operation state. it can.

Next, the operation of the headphone stereo 1 when the operation is stopped due to battery exhaustion will be described.

When a nickel-cadmium battery is used as a power supply battery, it has a characteristic that the power supply voltage drops sharply when the power supply voltage falls below a predetermined level.

Therefore, when this battery is used, the drive motor instantaneously stops rotating due to battery exhaustion.

Since the user cannot accurately recognize this state, the user may judge that the device has failed.

If an alarm indicating battery exhaustion is output, it is known that the tape stop is due to battery exhaustion, so that false recognition can be avoided.

Therefore, this device is provided with a voltage detection circuit 20,
The battery voltage in the headphone stereo 1 is detected. When the detection result becomes lower than a predetermined voltage (a voltage necessary for the operation of the headphone stereo 1), the control signal generation circuit 21 operates.

The control signal generation circuit 21 generates a control signal Sp that is turned on and off every 50 msec, for example, as shown in FIG. 2E.

This control signal Sp is supplied to the alarm oscillator control means 5 via the OR circuit 22.

Accordingly, when the battery is exhausted even during the muting and the output of the reproduction sound, an alarm sound is output to notify the battery exhaustion.

In this embodiment, the control signals Sc and Sp supplied to the alarm oscillator control means 5 are set in advance as shown in FIGS. 2A to 2E. However, the present invention is not limited to this.

That is, the control signals Sc and Sp differ for each operation state,
It is only necessary that the operation state can be recognized aurally by the headphone 8.

[Effects of the Invention] As described above, this invention comprises an operation switch for selecting an operation state of a tape recorder and a control means for generating a control signal corresponding to each operation state in accordance with the operation of the operation switch. A different alarm signal is generated correctly for each operation state based on the control signal.

In this invention, the operation state can be easily recognized while the tape recorder main body is kept in a bag, a bag, or the like.

Therefore, whether or not the tape recorder is operating in accordance with the operation of the operation switch can be correctly, easily and reliably confirmed by hearing.

In addition, when the headphone is worn on the ear, the alarm signal is output as sound from the headphone, so that the alarm sound can be easily and reliably heard without being affected by the surrounding sound.

Also, since the alarm sound is output from the headphones during the muting period after the key operation, the alarm sound and the reproduction sound are not output at the same time, so that the alarm sound can be easily heard and the alarm sound can be heard. Does not interfere with playback sound.

Therefore, the tape recorder with an alarm function according to the present invention is extremely suitable for application to a tape recorder having a remote control function such as a portable headphone stereo as described above.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an example of a tape recorder with an alarm function according to the present invention, FIG. 2 is a timing chart of control signals supplied to an alarm oscillator control means, and FIG. 3 shows an example of a conventional tape recorder. It is a system diagram. DESCRIPTION OF SYMBOLS 1 ... Tape recorder with alarm function 2 ... Operation switch 3 ... Control means 4 ... Mechanical state detection switch 5 ... Alarm oscillator control means 6 ... Alarm oscillator 7 ... Main amplifier 8 ... Headphone 20 ... Voltage detection means 21 Control signal generation circuit Sa Mode signal Sc Control signal Sd Control signal Se Alarm signal

Claims (1)

(57) [Scope of request for utility model registration] 1. Signal reading means for reading a signal from a recording tape, signal processing means for processing a signal read by the signal reading means, and amplifying means for amplifying an audio signal processed by the signal processing means. A speaker unit for outputting the audio signal amplified by the amplifying means as audio; an operation switch for generating a signal for selecting an operation mode; and a control for switching to the selected operation mode by a signal from the operation switch. A tape recorder having detection means for detecting a traveling direction of the recording tape in the selected operation mode and generating a detection signal, wherein the alarm signal generation means generates an alarm signal; The audio signal is muted for a predetermined period after the start of the operation mode selected from the generation of the operation signal. A muting unit for generating a different signal for each traveling direction of the recording tape based on the detection signal generated by the detection unit and a signal from the operation switch; In the means, an alarm signal is generated based on a signal generated for each running direction of the recording tape generated by the control means, and the alarm signal generated by the alarm signal generating means is muted by the muting means. A tape recorder with an alarm function, wherein the audio is output from the speaker unit during a period.