JP2614566B2 - Remote control device for audio equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to audio equipment such as a disc player, and more particularly to a remote control device.

[0002]

2. Description of the Related Art Recently, an audio device called a headphone stereo, which is configured to reproduce and listen to a signal such as music reproduced from a disk player by headphones, has become widespread. Since such an audio device is generally used in a state in which the device main body is stored in a bag or the like, when switching the operation of the disc player, it is necessary to remove the device main body from the back and perform the switching operation. Yes, very inconvenient. As a technique for improving such a point, there is a technique in which a remote control device for switching operation of a disc player is incorporated in headphones.

[0003]

SUMMARY OF THE INVENTION In an audio equipment using headphones incorporating a remote control device, when a remote control plug is removed from a jack provided in the main body of the disk player during a reproduction operation or the like, an operation such as a reproduction operation is performed. Is performed as it is, and the capacity of the battery is wasted. An object of the present invention is to provide a remote control device in which this point is improved.

[0004]

A remote control device according to the present invention includes a first control circuit which is incorporated in an audio equipment main body and controls the operation of a signal reproducing device, and a jack provided in the audio equipment main body. A remote control circuit portion electrically connected to an electric circuit incorporated in the audio equipment main body by inserting a plug, and a switching signal incorporated in the remote control circuit portion and associated with a switching operation, and And a second control circuit for outputting to one control circuit.

[0005]

According to the present invention, the check signal is periodically sent from the second control circuit to the first control circuit when the signal reproducing device is in the operating state, and the check signal is no longer input to the first control circuit. At this time, the signal reproducing device is switched to a stop state.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a circuit diagram of a remote control device according to the present invention; FIG. 1 is an electric circuit diagram incorporated in an audio equipment main body, and FIG.

In FIG. 1, reference numeral 1 denotes a signal reproducing device such as a disk player, which has a first output terminal 2 for outputting a left channel signal reproduced from a disk, and a second output terminal for outputting a right channel signal. 3 and a power supply terminal 4 to which an operation power is supplied. Reference numeral 5 denotes a first control circuit for controlling the operation of the signal reproducing apparatus 1; a power supply terminal 6 to which operation power is supplied; an input / output terminal 7 for transmitting / receiving signals to / from a remote control unit;
A power control signal output terminal 8 for outputting an H (high) level signal when the signal reproducing apparatus 1 is put into an operation state is provided, and a plurality of control signal paths are provided between the signal reproducing apparatus 1 and the signal reproducing apparatus 1. Have been.

Reference numeral 9 denotes a first amplifier circuit which receives a left-channel reproduced signal output to a first output terminal 2 provided in the signal reproducing apparatus 1 and amplifies the signal.
Reference numeral 0 denotes a second amplifier circuit to which the right channel reproduction signal output to the second output terminal 3 is input and amplifies the signal. 11 is a battery housed in the main body of the audio equipment, 12
Is a booster circuit for boosting the voltage obtained from the battery 11 to a voltage value necessary for operating the signal reproducing device 1 and the first control circuit 5, and an output terminal 13 of the booster circuit is provided in the first control circuit 5. Connected to the power supply terminal 6.

Reference numeral 14 denotes a first power supply transistor whose emitter is connected to the output terminal 13 of the booster circuit 12 and whose collector is connected to the power supply terminal 4 provided in the signal reproducing device 1. Has the function of supplying the power obtained from the booster circuit 12 to the signal reproducing device when in the conductive state. Reference numeral 15 denotes a first control transistor whose collector is connected to the base thereof via a resistor 16 and whose emitter is grounded in order to control the operation of the first power supply transistor 14, and whose base is connected to the resistor 17. It is connected to a power control signal output terminal 8 provided in the first control circuit 5 via the power supply.

Reference numeral 18 denotes a second power supply transistor whose emitter is connected to the positive terminal of the battery 11 and whose collector is connected to the power supply terminals of the first amplifier circuit 9 and the second amplifier circuit 10. When the power is obtained from the battery 11 in the conductive state, the first amplifier 9
And an operation of supplying the signal to the second amplifier circuit 10. 1
Reference numeral 9 denotes a second control transistor whose collector is connected to its base via a resistor 20 and whose emitter is grounded in order to control the operation of the second power supply transistor 18, and whose base is connected to a resistor 21. It is connected to a power control signal output terminal 8 provided in the first control circuit 5 via the power supply.

Reference numeral 22 denotes a headphone jack into which a headphone plug is inserted, a first signal terminal 23 to which an output signal of the first amplifier circuit 9 is applied, and a second terminal to which an output signal of the second amplifier circuit 10 is applied. A second signal terminal 24, a ground terminal 25 that is grounded and contacts a ground plug terminal of the plug when the headphone plug is inserted, and an input / output terminal 7 provided in the first control circuit 5; Connected to the control terminal 26 which is in contact with the control plug terminal of the plug when the headphone plug is inserted and the output terminal 13 of the booster circuit 12 and the plug is inserted when the headphone plug is inserted. And a power supply terminal 27 that comes into contact with the power supply plug terminal.

As described above, the electric circuit incorporated in the main body of the audio equipment is constituted. Next, a headphone with a remote control will be described with reference to FIG.

In FIG. 2, reference numeral 28 denotes a headphone plug which is inserted into the headphone jack 22 provided on the above-mentioned audio equipment main body. When the headphone plug 28 is inserted into the headphone jack 22 , it contacts the first signal terminal 23. A signal plug terminal 29, a second signal plug terminal 30 that contacts the second signal terminal 24, a ground plug terminal 31 that contacts the ground terminal 25, a control plug terminal 32 that contacts the control terminal 26, and a power plug that contacts the power terminal 27. The terminal 33 is provided.

Reference numeral 34 denotes a first variable resistor for adjusting the signal level of the left channel, which is connected between the first signal plug terminal 29 and the ground plug terminal 31. Reference numeral 35 denotes a left channel speaker that emits a left channel signal, and is connected between the slider of the first variable resistor 34 and the ground plug terminal 31. A second variable resistor 36 adjusts the signal level of the right channel, and is connected between the second signal plug terminal 30 and the ground plug terminal 31. Reference numeral 37 denotes a right channel speaker that emits a right channel signal, and is connected between the slider of the second variable resistor 36 and the ground plug terminal 31.

Reference numerals 38, 39, 40, and 41 denote operation switches for reproduction, operation for stop, operation for fast-forward and operation for fast-return provided on the remote controller, and reference numeral 42 denotes a switching operation of each of the operation switches. Outputs a signal for switching the operation of the signal reproducing device 1 incorporated in the main body of the audio equipment in accordance with the above, and displays a song number or the like on the display device 43 based on the signal output from the first control circuit 5. A control plug terminal 32
And a power supply terminal 45 and a reset terminal 46 connected to the power plug terminal 33. 47 is the power plug terminal 3
3 is a reset circuit which is in an operation state for a predetermined time when power is supplied to the third control circuit 3. The reset signal is applied to a reset terminal 46 provided in the second control circuit 42 so that the reset operation of the second control circuit 42 is performed. Is configured to do so.

In such a circuit configuration, the second control circuit 4
2 outputs a switching signal corresponding to the switching operation of each operation switch to the first control circuit 5. When the signal reproducing device 1 is in the operating state, the second control circuit 42 transmits the switching signal to the first control circuit 5. The check signal is output periodically. When the check signal output from the second control circuit 42 is no longer input to the first control circuit 5, the first control circuit 5 determines that the headphone plug 28 has been disconnected from the headphone jack 22 and is in an operating state. The signal reproducing device 1 is configured to be switched to a stop state.

The present invention is configured as described above, and the operation will be described next. When the headphone plug 28 shown in FIG. 2 is inserted into the headphone jack 22 , the first signal plug terminal 29, the second signal plug terminal 30, the ground plug terminal 31, the control plug terminal 32, and the power plug terminal 3
3 come into contact with the first signal terminal 23, the second signal terminal 24, the ground terminal 25, the control terminal 26, and the power supply terminal 27, respectively.

In such a state, when a power switch (not shown) provided on the audio equipment main body is closed, power from the battery 11 is supplied to the booster circuit 12, so that the voltage of the output terminal 13 is increased. A voltage is output. The power output to the output terminal 13 of the booster circuit 12 is supplied to the power supply terminal 6 of the first control circuit 5 and is supplied to the second control circuit 42 via the power supply terminal 27 and the power supply plug terminal 33.
Is supplied to the power supply terminal 45. The reset signal output from the reset circuit 47 is applied to the reset terminal 46 of the second control circuit 42, and the reset operation of the second control circuit 42 is performed.

When the signal reproducing device is in a stopped state, a power control signal output terminal 8 provided in the first control circuit 5
Output an L (low) level signal,
The first control transistor 15 and the second control transistor 19 whose bases are connected to the power control signal output terminal 8 are in a non-conductive state. Therefore, the first power supply transistor 14 and the second power supply transistor 18 connected to be controlled in operation by the first control transistor 15 and the second control transistor 19.
Is in a non-conducting state, and the signal reproducing device 1 and the first amplifying circuit 9
The power supply to the second amplifier circuit 10 is not performed.

When the reproduction operation switch 38 provided on the remote control operation unit is pressed and closed in the above-mentioned stop state, the reproduction encoded in the input / output terminal 44 provided in the second control circuit 42 is performed. Is output. The switching signal for reproduction output to the input / output terminal 44 is supplied to the first terminal through the control plug terminal 32 and the control terminal 26.
The signal is input to an input / output terminal 7 provided in the control circuit 5. When a coded reproduction switching signal output from the second control circuit 42 is input to the input / output terminal 7, an H level signal is output to the power control signal output terminal 8 and a signal based on the code is output. A switching signal for putting the reproducing apparatus 1 into the reproducing operation state is output from the first control circuit 5.

When an H-level signal is output to the power control signal output terminal 8, the first control transistor 15 and the second control transistor 19 are biased and inverted to a conductive state, so that the first power supply transistor 14 and The second power supply transistor 18 is inverted to the conductive state. When the first power supply transistor 14 is turned on, the voltage output to the output terminal 13 of the booster circuit 12 is supplied to the power supply terminal 4 of the signal reproducing apparatus 1 through the emitter and the collector. Further, when the second power supply transistor 18 is inverted to a conductive state, a voltage from the battery 11 is supplied as an operating power supply for the first amplifier circuit 9 and the second amplifier circuit 10 between the emitter and the collector.

When power is supplied to the signal reproducing apparatus 1, the signal reproducing apparatus 1 becomes operable.
The switching signal output from the control circuit 5 causes the disc player constituting the signal reproducing apparatus 1 to enter a reproducing operation state. When the disc player enters the reproducing operation state, the left and right channel signals reproduced from the disc are output to the first output terminal 2 and the second output terminal 3 provided in the signal reproducing device 1.

The left channel signal output to the first output terminal 2 is input to the first amplifier circuit 9 and amplified, and then the first signal is transmitted through the first signal terminal 23 and the first signal plug terminal 29 to the first signal terminal. Applied to the variable resistor 34. Therefore, the signal of the left channel is applied to the left channel speaker 35 for sound emission, and the volume thereof is controlled by the first variable resistor 3.
4 is performed by sliding the slider. Also,
The right channel signal output to the second output terminal 3 is input to the second amplifier circuit 10 and amplified,
The second signal via the signal terminal 24 and the second signal plug terminal 30
Applied to the variable resistor 36. Therefore, the signal of the right channel is applied to the right channel speaker 37 to emit sound, and the sound volume is controlled by sliding the slider of the second variable resistor 36.

When the playback operation switch 38 provided on the remote controller is pressed and closed, the signal playback device 1 enters the playback operation state as described above, and the playback signal played back from the disc is listened to by the headphones. In such a state, data such as a song number obtained from the disk is input to the first control circuit 5. Such a data signal is output from the input / output terminal 7 provided in the first control circuit 5 and then input / output terminal provided in the second control circuit 42 via the control terminal 26 and the control plug terminal 32. 44. When such a data signal is input to the input / output terminal 44, a control drive operation of the display device 43 is performed by the second control circuit 42, and the music number or the like obtained from the disc is displayed on the display device 43. Therefore, the user can recognize the music number or the like being reproduced by the data displayed on the display device 43 provided in the remote control operation unit of the headphones. The playback operation is performed in this manner. Next, an operation when a stop operation is performed in the playback operation state will be described.

When the stop operation switch 39 provided on the remote controller is pressed and closed while the signal reproducing apparatus 1 is in the above-mentioned reproducing operation state, an input / output terminal 44 provided on the second control circuit 42 is provided. Is output. The stop switching signal is input to the input / output terminal 7 of the first control circuit 5 through the control plug terminal 32 and the control terminal 26 as described above. When such a signal is input to the first control circuit 5, a switching signal for stopping the signal reproducing device 1 is output, and then the output signal of the power control signal output terminal 8 is inverted from H level to L level. I do.

When a switching signal for stopping is output from the first control circuit 5, the signal reproducing device 1 is switched to a stopped state. When the output signal of the power control signal output terminal 8 becomes L level, the first control transistor 15 and the second
Since the control transistor 19 is inverted to the non-conductive state,
The first power supply transistor 14 and the second power supply transistor 18 are inverted to a non-conductive state.
As a result, the power supply to the signal reproducing device 1, the first amplifier circuit 9, and the second amplifier circuit 10 is cut off, and the audio equipment main body returns to the original stopped state.

As described above, the switching operation to the reproduction operation state and the switching operation from the reproduction operation state to the stop state are performed, but the fast-forward operation and the fast-return operation are also performed similarly. That is, when the fast-forward operation switch 40 or the fast-return operation switch 41 provided on the remote control operation unit is pressed and closed, the fast-forward operation code coded at the input / output terminal 44 provided on the second control circuit 42 is obtained. A switching signal or a fast-return switching signal is output.

The fast-forward switching signal or fast-return switching signal output to the input / output terminal 44 is applied to the control plug terminal 32.
And input to the input / output terminal 7 of the first control circuit 5 through the control terminal 26. When such a signal is input to the input / output terminal 7, an H-level signal is output to the power control signal output terminal 8 of the first control circuit 5 and the signal reproducing device 1 is in a fast forward operation state or a fast reverse operation state. Is output.

When such a signal is output from the first control circuit 5, as described above, the first power supply transistor 14
Then, the second power supply transistor 18 becomes conductive, and power is supplied to each circuit. As a result, the signal reproducing apparatus 1 corresponding to the switching signal output from the first control circuit 5
In the fast forward operation state or the fast reverse operation state. And. The display device 4 provided in the remote control operation unit when in the fast forward operation state or the fast reverse operation state.
3 displays characters or the like indicating that the signal reproducing apparatus 1 is in the fast forward operation state or the fast reverse operation state.

When the signal reproducing apparatus 1 is in the fast forward operation state or the fast reverse operation state described above, the stop operation switch 3
When the switch 9 is pressed and closed, a coded stop switching signal is output to the input / output terminal 44 of the second control circuit 42. Such a stop switching signal is transmitted to the first control circuit 5 as described above.
Of the power control signal output terminal 8 after the switching signal for stopping the operation is output from the first control circuit 5 to the signal reproducing apparatus 1. Invert from level to L level. As a result of such an operation, the signal reproducing apparatus 1 is switched from each operation state to a stopped state, power supply to each circuit is cut off, and the audio equipment main body returns to the original stopped state.

As described above, each operation of this embodiment is performed. Next, when the signal reproducing device 1 is in an operation state such as reproduction, the headphone plug 28 is connected to the headphone jack 22.
The operation in the case where the error is further eliminated is described.

When the reproduction operation switch 38 provided on the remote control operation unit is pressed and closed, a coded reproduction switching signal is output to the input / output terminal 44 of the second control circuit 42 as described above, and the signal is output. The switching operation of the playback device 1 to the playback operation state is performed. After the switching operation is performed, a check signal is periodically output to the input / output terminal 44 of the second control circuit 42.

The check signal output to the input / output terminal 44 is periodically input to the input / output terminal 7 of the first control circuit 5 via the control plug terminal 32 and the control terminal 26.
The first control circuit 5 detects a check signal input to the input / output terminal 7, and when the check signal is periodically input, the headphone plug 28 is inserted into the headphone jack 22 . to decide.
As a result, operations such as reproduction of the signal reproduction device 1 are continuously performed.

In such a state, the headphone plug
When 28 is pulled out of the headphone jack 22 , the check signal is not input to the input / output terminal 7 of the first control circuit 5. When the check signal is no longer input to the input / output terminal 7, the first control circuit 5 determines that the headphone plug 28 has been disconnected from the headphone jack 22 . as a result,
The first control circuit 5 outputs a signal for switching to the stop state to the signal reproducing device 1, and the output signal of the power control signal output terminal 8 is inverted from H level to L level.
As a result of such an operation, the signal reproducing apparatus 1 is switched from each operation state to a stopped state, power supply to each circuit is cut off, and the audio equipment main body returns to the original stopped state. Therefore, when the headphone plug 28 is disconnected from the headphone jack 22 , it is possible to prevent the operation such as the reproduction from being performed continuously.

[0035]

According to the present invention, the check signal is transmitted from the second control circuit provided in the remote control circuit section to the first control circuit provided in the audio equipment main body when the signal reproducing apparatus is in the operating state. Since the signal is periodically transmitted and the signal reproducing device is switched to the stop state when the check signal is no longer input to the first control circuit, the power supply to the signal reproducing device is cut off. When the remote control plug is disconnected from the jack when the signal reproducing device is in an operation state such as reproduction, switching to the stop state not only prevents useless operation of the drive mechanism and the like but also prevents the signal reproducing device from being used. Useless power consumption by an electronic circuit or the like incorporated in the device can be minimized. Therefore,
The remote control device of the present invention has an extremely large effect when implemented in a portable audio device called a headphone stereo.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram incorporated in an audio equipment main body constituting the present invention.

FIG. 2 is an electric circuit diagram showing a connection relation of headphones with a remote controller.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 signal reproducing device 5 first control circuit 11 battery 14 first power supply transistor 15 first control transistor 18 second power supply transistor 19 second control transistor 22 headphone jack 23 first signal terminal 24 second signal terminal 25 ground Terminal 26 Control terminal 27 Power terminal 28 Headphone plug 29 First signal plug terminal 30 Second signal plug terminal 31 Ground plug terminal 32 Control plug terminal 33 Power plug terminal 42 Second control circuit

Claims (1)

(57) [Claims] 1. An audio device configured to listen to a reproduced signal through headphones, incorporated in an audio device main body, operating a signal reproducing device, and controlling the signal.
A first control circuit for controlling a power supply operation to the playback device ;
A remote control circuit unit electrically connected to an electric circuit incorporated in the audio device main body by inserting a plug into a jack provided in the audio device main unit, and a remote control circuit unit incorporated in the remote control circuit unit And a second control circuit for outputting a switching signal accompanying the switching operation to the first control circuit, wherein the second signal is output when the signal reproducing device is in the operating state.
The check signal periodically sent from the control circuit to the first control circuit, when the check signal switches the signal reproducing apparatus when it is not being input to the first control circuit to the stopped state DOO
A remote control device for audio equipment , wherein the power supply to the signal reproducing device is cut off .