JP2953214B2 - Remote control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device used in a tape recorder or the like for operating a tape operation, a sound quality switching operation, and a volume switching operation by using electric means, and more particularly, to a remote control device provided in a main body of the apparatus. The present invention relates to a remote control device in which a device is provided, and an oscillation unit, a control unit, and a plurality of button operation switches are provided in a remote control, so that a device body receives a signal by a weak radio wave of the remote control and is controlled in operation.

[0002]

2. Description of the Related Art In recent years, remote control devices have been used by providing a button operation switch in the middle of an earphone (or headphone) cord connected to a tape recorder that operates a tape operation using electric means. Various proposals have been made, and one example is disclosed in JP-A-64-27060.

A conventional remote controller will be described below with reference to the drawing of Japanese Patent Application Laid-Open No. 64-27060.

FIG. 1 is a block diagram of a remote controller in this conventional example, and FIG. 3 is a perspective view of a tape recorder provided with the remote controller.

In FIG. 1, a control circuit 2 includes operation switches 1a to 1e for reproduction, inversion, fast forward, rewind, and stop.
And a control command is input from one button operation switch 9.
When a control command for the button operation switch 9 is input to the control circuit 2, the control circuit 2
The number of times of the pulse signal generated by the operation is detected, and some of the operations by operating each of the operation switches 1a to 1d, for example, reproduction, inversion, fast-forward in the tape mode,
Outputs operation commands corresponding to each operation of rewind and stop,
It was configured to control the mechanism.

As shown in FIG. 3, if one button operation switch 9 is provided in the middle of the headphone cord 12 for connecting the headphone 10 and the apparatus main body 11, a plurality of operation commands can be transmitted to a single button as a remote controller. It could be done with an operation switch.

[0007]

However, the conventional remote control device as described above has a button operation switch in the middle of the headphone cord, so that the operation can be performed only near the chest and the weight of the remote control is limited. There was a problem that the headphones were easily detached from the ears.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a remote controller which can be operated at any position.

[0009]

In order to solve the above-mentioned problems, a remote control device according to the present invention is adapted to a device main body for listening using earphones (or headphones) and to control each function of the device main body. And a headphone having a cord connected to the device main body via a connector. The remote control includes an operation button and identification of a remote control signal by operating the operation button. Random code to generate code randomly
The code generation means and the generated identification code are stored.
When operating the operation buttons, the memory corresponds to the operation of the operation buttons.
Coding processing means for synthesizing the selected identification code with the selected function control signal, and transmitting means for transmitting as a weak radio wave
And a modulating means for modulating the oscillating means in accordance with the coded remote control signal, while the device body receives a remote control signal transmitted from the remote control by an earphone code and connects the same via a connector. demodulating means for demodulating a reception circuit section capable of receiving a remote control signal coded received by the reception circuit section Te, the device body is the
The knowledge generated by the random code generator of the remote control
When a different code is received for the first time,
A memory for storing another code, and a control circuit for controlling a predetermined function of the device main body based on the demodulated signal, wherein the earphone code antenna captures a control signal corresponding to a control operation of a remote controller, and receives a remote control signal. Knowledge of
Different code and identification code stored in the memory of the device
The predetermined function control of the device main body is performed only when the values match .

[0010]

Further, the present invention provides a receiving circuit section having a carrier wave detecting circuit, a comparator for shaping a waveform of a remote control signal, and a holding circuit for setting and holding a reference voltage of the comparator with a signal detected by the carrier wave detecting circuit. And a demodulating means constituted by a circuit so as to enable demodulation of two types of coded remote control signals having different pulse widths.

[0012]

According to the present invention, the control operation corresponding to each operation button of the wireless remote controller is transmitted by a weak radio wave, and the function of the device main body can be controlled by the remote control signal received by the earphone code antenna.

Further, the function control of the apparatus main body can be performed only when the identification code of the remote control signal matches the stored identification code of the apparatus main body.

Furthermore, it is possible to demodulate two types of coded remote control signals having different pulse widths.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the remote controller according to the present invention will be described below in detail with reference to FIGS.

FIG. 1 is a block diagram showing a remote controller according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a device main body, and reference numeral 2 denotes a wireless remote controller for operating the device 1.

First, the configuration of the wireless remote controller 2 will be described. The wireless remote controller 2 has a remote control operation button group 20, and 20a is a tape reproduction operation button for performing operations of reproduction, stop, and reverse reproduction by pressing time.
0b is a FF operation button, 20c is a REW operation button, 20d is a sound quality switching button for selecting a frequency characteristic or a reverberation effect, etc., 20e is a volume up operation button of the device body 1, 20f is a volume down operation button of the device body 1, Reference numeral 20g denotes an identification code compulsory switching operation button described later.

Reference numeral 12 denotes coding processing means comprising a microcomputer or the like for controlling the entire wireless remote controller 2, reference numeral 14 denotes a transmission code ROM storing function codes determined by inputting the operation button group 20, and reference numeral 13 denotes a wireless transmission code ROM. Identification code random generation means for randomly generating an identification code at the time of the first button operation after the power supply 19 of the remote controller 2 is connected or operation of the identification code forced switching operation button 20g, and 16 is generated by the identification code random generation means 13. A memory means for storing the identification code stored in the memory; a data synthesizing means for synthesizing the transmission code ROM data and the identification code stored in the memory means to generate a remote control signal; To determine the function code or generate it by the data synthesis means 15 Remote control means having a function such as controlling a later-described modulation means according to the remote control signal.

Reference numeral 10 denotes an oscillating means for generating a weak radio wave for operating the apparatus main body 1, and 11 denotes a remote control signal generated by the coding processing means 12,
Is a power supply control means controlled by the remote control control means 17 to control the power supply of the oscillation means 10 and the modulation means 11.

Next, the configuration of the device body will be described. 3
Reference numeral 2 denotes a tape operation button group of the device main body 1, 32a denotes a reproduction operation button for starting reproduction and reverse reproduction, 32b denotes a stop / standby button for performing stop or standby operation according to a set state, and 32c denotes an FF. The operation button 32d is a REW operation button for performing fast forward or rewind operation, respectively.

24 is a tape driving means, 25 is a mechanism, 26 is a reproducing head, 27 is a preamplifier which inputs and amplifies a signal from the head 26 during tape reproduction, and 28 is a frequency characteristic of a signal which receives an output signal of the preamplifier 27 as an input. Alternatively, sound quality control means for processing reverberation components and the like, 29 is a sound volume control means for adjusting the level of a signal using the output of the sound quality control means 28 as an input, and 30 is used for inputting the output of the sound volume control means 29 for power amplification. Power Amplifier.

Reference numeral 3 denotes a connector for connecting the headphone cord 4 connected to the headphone 5 for listening to the output of the power amplifier 30 to the main body 1, and 34 a connector for connecting the headphone cord 4 to a high frequency ground. A choke coil 35 for preventing the coupling is a coupling capacitor for inputting a radio wave captured by the headphone cord 4 to a receiving circuit described later.

Reference numeral 6 denotes a receiving circuit unit for receiving only radio waves from the wireless remote controller 2, and 21 denotes a receiving circuit unit.
Demodulation means for extracting a remote control signal component from the output of the controller and performing waveform shaping.

Reference numeral 36 denotes a device main body control block composed of a microcomputer or the like, which decodes output data of the demodulation means 21 and controls the device main body 1 based on the result, and has the following configuration. 33 is a memory presence / absence determining means for checking whether or not an identification code has been set in the device main body 1;
Is a memory means for writing and holding an identification code extracted from a remote control signal received from the wireless remote controller 2 when an identification code is not set or an identification code compulsory rewrite code is received. An identification code discriminating means 9 for comparing and judging the identification code stored in the memory means 8; 9 is a device main body control means, which is a tape according to the input of the operation button operation group 32 or the output data of the demodulation means 21; It controls the driving means 24, the preamplifier 27, and the power control means 22 of the power amplifier 30.

Reference numeral 23 denotes a power supply control means of the demodulation means 21 and the receiving circuit 6 which is controlled by the equipment main body control means 9. Reference numeral 31 denotes a power supply of the device main body 1. 2 (a), 2 (b) and 3 are perspective views of a tape recorder device main body provided with a remote controller of the present invention and a wireless remote controller. FIG.
3A shows a state in which headphones 5 are connected to the apparatus main body 1 via a cord 4, and FIG. 3B shows a wireless remote controller 2.
Has an openable and closable slide lid 2a so that an internal operation switch can be seen.

The push button 2b, which is exposed on the surface with the slide lid 2a closed, is generally triangular in shape, and has three points at which three different switches can be pressed. It is an operation type seesaw switch, and each corner has operation buttons 20a, 20b, 20
c. When the slide cover 2a shown in FIG. 3 is open, the operation buttons 20d to 20g disposed inside can be operated.

The operation of the remote control device configured as described above will be described below with reference to the flowcharts shown in FIGS. 4 and 5 show a control flow of the wireless remote controller 2, FIG. 6 shows a remote controller signal configuration diagram of the wireless remote controller 2, and FIGS.

First, in FIGS. 4 and 5, when the power supply 19 is connected to the wireless remote controller 2, the operation buttons 20a and 20
It waits until b, 20c, 20d, 20e, 20f, and 20g are pressed (step 1). Next, when a button operation is performed in (Step 1), it is confirmed whether the identification code has already been set by the memory means 16 (Step 2),
If not set, an identification code is randomly generated by the identification and code random generation means 13 (step 10) and stored in the memory means 16 (step 11).

If the identification code has been set in (Step 2), the pressed button is set to the identification code compulsory switching button 20g.
(Step 3), and if the button is the identification code compulsory switching button, the identification code is randomly generated by the identification code random generation means 13 (Step 13). Then, the identification code generated this time is the set identification code. The memory means 16 checks whether or not it is the same (step 14). If it is the same, a code obtained by adding 1 to the generated identification code (step 15), and if not, the newly generated identification code is newly added. It is stored in the memory means 16 (step 11). When the identification code is stored in the memory means 16 by the above two methods (step 11), the remote control function code and the identification code are stored in FIG.
To generate a remote control signal (step 12).

Here, the identification code random generating means 13 of (Step 10) and (Step 13) will be described with reference to FIG. First, the time is counted from the time when the button operation is performed (step 26), and the counting is continued until the button operation is completed (step 27).
The total time until the button is released next is 2

Divide by n, the remainder is 0 to 2

The values up to n-1 are stored in the memory means 16 as an n-bit identification code (step 28).
In FIG. 5, n = 4 as an example.

Next, if the button pressed in (Step 3) is not the identification code compulsory switching button 20g, the other operation buttons 20a, 20b, 20c, 20d, 20e, 20f
Is pressed (Step 4),
(Step 5), (Step 6), (Step 7),
If no corresponding button is confirmed in (Step 8) and (Step 9), the flow returns to (Step 1) again and waits for a button operation.

Here, the pressed button is the volume up operation button 2
If it is 0e, the process proceeds from (Step 4) to (Step 16), and synthesizes the volume up function code and the identification code according to the format of FIG. 6 to generate a remote control signal. If the pressed button is the volume down operation button 20f (step 5)
Then, the process proceeds to (Step 17) to synthesize the volume down function code and the identification code according to the format shown in FIG. 6 to generate a remote control signal. The pressed button is the sound quality switching button 20.
If d, proceed from (Step 6) to (Step 18),
The sound quality switching function code and the identification code are synthesized according to the format shown in FIG. 6 to generate a remote control signal. If the pressed button is the FF operation button 20b, the process proceeds from (Step 7) to (Step 19) to combine the fast-forward function code and the identification code according to the format of FIG. 6 to generate a remote control signal. If the pressed button is the REW operation button 20c, the process proceeds from (Step 8) to (Step 20) to combine the rewind function code and the identification code according to the format shown in FIG. 6 to generate a remote control signal. Also, if the pressed button is the tape playback operation button 20a, from (Step 9) to (Step 21)
Then, the tape reproducing function code and the identification code are combined in accordance with the format shown in FIG. 6 to generate a remote control signal.

(Step 12), (Step 1)
6), (Step 17), (Step 18), (Step 19), (Step 20), and (Step 21), after each data synthesizing process, the remote control control means 17 controls the power control means 18 and the oscillation means 10 To start the carrier transmission (step 22).

Subsequently, in accordance with the remote control signal synthesized by the remote control control means 17, the modulation means 11 modulates the oscillation means 10 in the format shown in FIG. 6 and transmits remote control signal data (step 23).

Further, the pressed button is a tape playback button 20a.
At the time of (step 9) to (step 21) as described above
The process proceeds to (Step 23), and it is confirmed whether the button is continuously pressed (Step 2).
4) In that case, after the button is released, and immediately for other buttons, the process proceeds to (Step 25) and
To stop the power supply of the oscillating means 10 and stop the carrier transmission. Thereafter, the flow returns to (Step 1) to accept the button operation again. Therefore, while the tape playback button 20a is pressed, there is a state where only the carrier is transmitted after the modulation of the remote control signal as shown in the upper diagram of FIG.

Next, a control flow of the device body 1 will be described with reference to FIGS. 7, 8, and 9. FIG. 7 and 8 are flowcharts showing the control contents of the device body 1, and FIG. 9 is a list of operation states of the device body 1.

As shown in FIG. 9, there are three operation states in the main body of the apparatus. First, these three operation states will be described.

At first, the main body is in the operating state. In this state, the mechanism 25 is in the operating state through the tape driving means 24, and when the power is supplied to the amplifier circuit by the power supply controlling means 22 and the head 26 is in the play operation. The input audio signal is supplied to a preamplifier 27, sound quality control means 28,
Amplified in the order of volume control means 29 and power amplifier 30,
Headphones 5 through headphone cord 4 from connector 3
Taken out. Further, power is supplied to the receiving circuit unit 6 and the demodulating unit 21 by the power control unit 23, and the radio wave captured by the headphone cord 4 is transmitted to the receiving circuit unit 6 through the coupling capacitor 35, and the radio wave is received among the received radio waves. Only the frequency of the transmission radio wave from the remote controller 2 is received. Further, the remote controller signal is extracted by the demodulation unit 21 and transmitted to the device main body control unit 9, the identification code determination unit 7, and the memory presence / absence determination unit 33.

The second is a standby state. In this state, the receiving circuit section 6 and the demodulating means 21 are operated by the power control means 23 and the transmission radio wave of the wireless remote controller 2 can be received, but the tape driving means 24 and the power control means Reference numeral 22 denotes a non-operating state, and the mechanism 25 is in a stopped state.

The last is a stopped state in which the power supply control unit 22, the power supply control unit 23 and the tape drive unit 24 are stopped, and the receiving circuit unit 6, the demodulation unit 21 and the mechanism 25 are stopped.

Based on the above three states of operation, the device body 1
Will be described with reference to FIGS. 7 and 8. FIG.

First, the radio wave received by the headphone cord 4 is detected by the receiving circuit section 6, and it is confirmed by the device main body control means 9 whether or not there is a received data input re-coded by the demodulation means 21 (step 30). If there is no input, it is checked whether there is any input from the device body operation button group 32 (step 31). If there is no input from the main body operation button group 32, the process returns to (Step 30) again to confirm the reception input.

At the step (31), the operation buttons 32a, 3
If any one of 2b, 32c and 32d is operated, first, in step 32, the stop / standby button 3
Check if it is 2b, and if it is any other button operation,
Proceeding to (Step 33), the tape drive means 24 is controlled by the device main body control means 9 and the mechanism 25 is switched to an operation corresponding to the input button. That is, the reproduction operation button 32a performs the reproduction or reverse reproduction processing, the FF button 32c performs the fast forward processing, and the REW button 32d performs the rewind processing. Thereafter, the flow returns to (Step 30) again to confirm the reception input.

If the operation of the operation button of the device main body is the stop / standby button 32b at (step 32), then it is checked whether the mechanism 25 of the device main body 1 is operating (step 34). The tape drive means 24 is controlled by the device main body control means 9 to stop the mechanism 25, and the power supply control means 22 stops the power supply of the preamplifier 27 and the power amplifier 30 and enters a standby state (step 35). Then again (Step 30)
Check the received input.

If the mechanism 25 is stopped in (step 34), it is checked whether or not the current operation state of the main body 1 is in the standby state (step 36). At this time, power is supplied to the receiving circuit section 6 and the receiving block of the demodulating means 21 through the power supply controlling means 23 by the equipment main body controlling means 9 to be in a standby state (step 35). If it is determined in step 36 that the apparatus is in the standby state, the apparatus main body control means 9 and the demodulation means 21
The power supply of the receiving block is stopped and brought into a stopped state (step 37). Thereafter, the flow returns to (Step 30) to confirm the reception input.

Next, if there is a reception input in (Step 30), (moving to FIG. 8) whether or not the identification code of the device body 1 has been set by the memory presence / absence determining means 33 using the data stored in the memory means 8 Confirmation (step 38), if not set, that is, if the device main body 1 has not yet received a signal from the wireless remote controller 2 after connecting the power supply 31, the identification code of the data just received is set as the identification code of the device main body 1, It is stored in the memory means 8. After that (moving to Fig. 7)
Returning to (Step 30), the reception input is confirmed.

If the identification code has been set in (step 38), it is checked whether or not the apparatus main body 1 is in the standby state (step 39). If the apparatus is in the standby state, the received data is decoded (step 46) and the reception is performed. It is checked whether or not the function code part of the received data is an identification code compulsory switching code (step 47). If it is an identification code compulsory switching code, the identification code of the received data is set as a new identification code and stored in the memory means 8 (step 47). 5
2). Thereafter (moving to FIG. 7), the process returns to (step 30) again to confirm the reception input.

If the function code is not the identification code compulsory switching code in (step 47), it is confirmed whether the identification code of the received data matches the identification code stored in the memory means 8 of the device body 1. (Step 4
8) If there is a mismatch (moving to FIG. 7), again (step 3)
Return to 0) and confirm the reception input. If the identification codes match, the function code portion of the received data is confirmed in (Step 49) and (Step 50). Here, if the demodulated function code is the FF button code corresponding to the operation of the remote control operation button 20b, the process proceeds from (step 49) to (step 53), where the tape driving means 24 is controlled by the device main body control means 9 and the mechanism is controlled. 25 is in the fast forward state,
If the demodulated function code is a REW button code corresponding to the operation of the remote control operation button 20c (step 49).
To (step 53) to rewind,
If the demodulated function code is a tape button code corresponding to the operation of the remote control operation button 20a, the process proceeds from (Step 50) to (Step 51), and
5 is set to a reproducing state, power is supplied to the preamplifier 27 and the power amplifier 30 through the power control means 22, and reproduced sound is output from the headphones 5. Further, when the button data is not the corresponding button data in (Step 50), or after the processing of (Step 51) and (Step 53) is completed,
(Move to FIG. 7) Return to (Step 30) again to confirm the reception input.

If it is determined in step 39 that the main body 1 is not in the standby state, that is, the mechanical operation is being performed, the identification code of the data received by the identification code determining means 7 and the main body 1 using the data from the memory means 8 are used. (Step 40), and if they match, decrypts the received data (step 41) and then checks whether the function code of the received data is a tape button code. (Step 42) If it is a tape button code corresponding to the operation of the operation button 20a (Step 4)
Proceeding to 3), mechanical processing is performed according to the pressing time.
If the function code of the data received in (Step 42) is not a tape button code, it is checked whether it is other function code data (Step 44). Here, if the received function code is the FF button code corresponding to the operation of the remote control operation button 20b or the REW button code corresponding to the operation of the remote control operation button 20c, the process proceeds from (Step 44) to (Step 45). Tape drive means 2
In step 4, fast forward or rewind processing of the mechanism 25 is performed. If the received function code is a sound quality switching code corresponding to the operation of the remote control operation button 20d, the process proceeds from (step 44) to (step 45), and the sound quality control means 28
To control the sound quality such as enhancing the low frequency of the reproduced sound. If the received function code is a volume up code or a volume down code corresponding to the operation of the remote control operation buttons 20e and 20f, the process proceeds from (Step 44) to (Step 45), and the volume control means 29 is used to increase or decrease the volume. Is performed. (Step 43) and (Step 4)
After the processing corresponding to the function code received in 5) is completed (moving to FIG. 7), the process returns to (Step 30) again to confirm the reception input.

When the identification codes do not match in (Step 40) or when there is no corresponding function code data in (Step 44) (moving to FIG. 7), the operation returns to (Step 3).
Return to 0) and confirm the reception input.

As described above, according to this embodiment, by providing the receiving circuit in the main body of the apparatus and using the wireless remote controller as the remote controller, the operation range of the remote controller is not limited and the operability can be greatly improved. Also, the configuration of the operation signal from the remote controller to the main unit is a combination of the function code and the identification code automatically generated by the remote controller randomly, and the main unit stores the first received identification code data together with the remote control and receives the matching of the identification code. Under the conditions, it is difficult to malfunction against external noise.

Next, a specific example of the receiving circuit section 6 and the demodulating means 21 will be described in detail with reference to FIG. 1 and FIGS.

FIG. 11 shows the contents of the receiving circuit section 6 and the demodulating means 21 in FIG. 1 in detail. FIG.
The headphone cord 4 captures radio waves from the wireless remote controller 2 shown in FIG. 1, and the receiving circuit section 6 includes an IF amplifier circuit 40 for converting and amplifying the frequency of the radio waves captured by the headphone cord 4, and an IF amplifier The circuit 40 has an FM detection circuit 41 and a carrier detection circuit 42 for detecting and outputting only the modulation signal from the output of the circuit 40. The carrier detection circuit 42 detects only the carrier from the output of the IF amplifier circuit 40, and If there is no output 42
This is a circuit that outputs "open" to "a" and outputs "LOW" if there is.
The demodulation means 21 includes a comparator 43 for shaping the waveform of the remote control signal.
1; an input 43a obtained by dividing the output voltage by a resistor and a reference voltage input 43b controlled by a carrier detection circuit output 42a;
And an output 43c connected to the memory presence / absence determining means 33 which is a part of the device main body control block 36, and outputs HIGH to 43c only when the voltage of the input 43a is higher than the reference voltage input 43b.

The receiving circuit and the demodulating means configured as described above will be described below. FIG. 13 shows an FM detection circuit 41.
14 is a diagram showing the relationship between the input modulation frequency of the output 41a and the detection output voltage, FIG. 14 is a diagram of two types of coded remote control signals having different pulse widths, and FIG. 12 is a transition table showing the state of each part in FIG. .

First, a case where the voltage control means 23 operates will be described. The voltage control means 2 is output from the control means 9.
3 works, the IF amplifier circuit 40, the FM detection circuit 41,
Power is supplied to the comparator 43. At this time, if a radio wave from the wireless remote controller 2 is not input to the headphone cord 4, the carrier detection circuit output 42a is HIGH, and the FM detection circuit output 41a has the reference output potential 0. 7V. Capacitor C1
Is charged through the resistor R3 and the diode D1, and since the output 41a of the FM detection circuit is 0.7V, the transistor Q
1, Q2 are both turned on, the capacitor C2 is charged with 0.7V, and the comparator reference voltage input 43b is set to 0.7V.
become. The input 43a of the comparator 43 is connected to a resistor R2.
Is very small compared to the resistor R4, the voltage of the FM detection circuit output 41a is divided by the resistors R4 and R5,
Since the voltage is 0.61 V, which is lower than the voltage 0.7 V of the reference voltage 43b, the comparator output 43c outputs LOW.

Next, a case where a radio wave from the wireless remote controller 2 is input to the headphone cord 4 will be described. In general, the detection output of an FM receiver is represented by an S curve of a modulation frequency F and a detection output voltage V as shown in FIG. In FIG. 13, F0 is a time when there is no modulation, that is, when only a carrier wave is received, and the detection output voltage at that time is V0. F1 is when the modulation signal of the modulation frequency F1 is received, and the detection output voltage at that time is V1. It is now assumed that V0 is 0.65V and V1 is 0.85V. The remote control signal from the wireless remote controller 2 is roughly classified into two types, a and b in FIG. 14A and 14B show that the pulse widths of the remote control signals are greatly different. In both a and b, the start of the remote control signal is V0, that is, a non-modulated state. for that reason,
First, the case where only the carrier is received will be described with reference to state B in FIG.

First, when the carrier is received, the receiving circuit 6
Since the output 41a of the FM detection circuit outputs 0.65 V, the input 43a of the comparator 43 divides the voltage of the output 41a of the FM detection circuit by resistors R4 and R5, and outputs 0.57V.
V. Since the output 42a of the carrier detection circuit 42 becomes LOW, the capacitor C1 starts discharging. Even when C1 starts discharging, the transistors Q2 and Q1 are turned on until the base voltage of the transistor Q2 becomes 0.7 V or less and becomes equal to the potential of the FM detection circuit output 41a. The discharge is started from 0.7 V, but remains higher than the voltage of the input 43a of the comparator 43, and the output 43c of the comparator 43 outputs LOW.

Next, from the discharge of the capacitor C1 until the base potential of the transistor Q2 becomes 0.7 V or less,
It is assumed that it takes 0 millisecond, and the time after 30 millisecond will be described according to state C in FIG. When the base potential of the transistor Q2 becomes 0.7 V or less, the transistors Q1 and Q2 are turned off, and the reference voltage input 43b of the comparator is set to 0.6.
It becomes constant at 5V and is maintained at that voltage. Since the output 41a of the FM detection circuit remains at 0.65 V, the input 43a of the comparator 43 is 0.57V, and the output 43c of the comparator 43 outputs LOW. Next, a case where a modulated signal is received will be described according to state D in FIG. Even if the modulation signal is received, the carrier detection circuit output 4
2a is held LOW, so that the transistors Q1,
Q2 is off and the reference voltage input 43
b is held at 0.65V. When the modulation signal is received, the output 41a of the FM detection circuit output from the reception circuit means 1
Outputs 0.8 V as described above. The input 43a of the comparator 43 divides the voltage of the FM detection circuit output 41a by the resistors R4 and R5 to become 0.7V. As a result, the output 43c of the comparator 43 is HIGH. Since the remote control signal is a pulse signal that repeats modulation and non-modulation, it is possible to demodulate the remote control signal by repeating state C and state D in FIG.

As described above, according to the present embodiment, each time a radio wave is received from the wireless remote controller, the reference input voltage of the comparator is set, and the comparator is set while receiving the radio wave from the wireless remote controller. By holding the reference input voltage of the radiator, it is possible to demodulate two types of coded remote control signals having different pulse widths as shown in FIGS.

In the above embodiment, the headphone 5 has been described as an innerphone type headphone that can be fitted into a concavity of an auricle. However, a headphone having a headband or an earphone that can be directly inserted into an external auditory canal may be used.

The point is that these earphones (or headphones)
Any code can be used as long as it can use the code section of the above as a code antenna and receive a remote control signal transmitted from the wireless remote control.

[0064]

As described above, the present invention provides an earphone (or
Headphone)
Operations corresponding to each function control are performed by the wireless remote control
A remote control device for performing the operation,
Button, identification code of remote control signal by operation of the operation button
Random code generation means for randomly generating
A memory for storing the generated identification code and an operation button
At the time of operation, the function control signal corresponding to the operation of the operation button
Coding processing means for synthesizing the selected identification code;
Transmitting means for transmitting as a weak radio wave;
To modulate the oscillating means in response to a remote control signal
Adjusting means, while the device main body is provided with the remote control.
Captures the remote control signal transmitted by the earphone code
Receiving circuit part capable of receiving signals via the
Demodulate coded remote control signals received by roadside
A demodulating means, and a main body of the device is a random code of the remote controller.
First receive the identification code generated by the code generation means
Saves the identification code in the remote control signal when
And a predetermined value of the device main body based on the demodulated signal.
A control circuit for controlling the function of the earphone
Control signal corresponding to the remote control
The remote control signal identification code and the
Only when the identification code stored in the memory matches
It is configured to perform predetermined function control of the main unit.
In addition, the operation of the main unit corresponding to each operation switch of the remote control can be performed at a place away from the main unit, so that there is no attachment in the middle of the earphone (or headphone) cord, and a new remote control with a clear chest can be used At the same time, the identification code is
Code is generated randomly, and its identification code is recorded on the device itself.
The remote control will be identified afterwards.
The same identification code on the device side and on the device body
It will be set without setting, like this
Remote control signal identification code and device
Only when the ID code stored in the main unit matches
People who have the same remote control are nearby
If the identification code does not match,
You .

[0065]

Further, by providing demodulation means constituted by a circuit for setting and holding a reference voltage of a comparator with a signal detected by a carrier wave detection circuit of the apparatus main body, two types of encoded signals having different pulse widths are provided. Demodulation of remote control signals is enabled.

[Brief description of the drawings]

FIG. 1 is a block diagram of a remote control device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the device main body and a wireless remote controller.

FIG. 3 is a perspective view of the wireless remote controller in a state where a slide cover is opened.

FIG. 4 is an overall control flowchart of the wireless remote controller;

FIG. 5 is a flowchart of the random code generating means.

FIG. 6 is a format of the remote control signal.

FIG. 7 is a first control flowchart of the device main body.

FIG. 8 is a second control flowchart of the device main body.

FIG. 9 is a diagram showing an operation state of the device main body.

FIG. 10 is an operation state transition diagram of the device main body.

FIG. 11 is a detailed circuit diagram of the receiving circuit unit and the demodulating means.

FIG. 12 is a diagram showing a state of each part in FIG. 11;

FIG. 13 is a diagram showing the relationship between the modulation frequency of the detection output and the output voltage.

FIG. 14 is a diagram showing two types of coded remote control signals

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Wireless remote control 3 Connector 4 Headphone cord 5 Headphones 6 Receiving circuit part 7 Identification code discriminating means 8 Device main body memory 9 Device main body control means 10 Oscillating means 11 Modulation means 12 Encoding processing means 13 Identification code random generation Means 14 Transmission code ROM 15 Data synthesizing means 16 Memory means 17 Remote control means 20 Wireless remote control operation buttons 21 Demodulation means 32 Tape operation button group 33 Memory presence / absence determination means 36 Equipment main body control block 42 Carrier wave detection circuit 43 Comparator

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-52148 (JP, A) JP-A-2-158295 (JP, A) JP-A-3-137844 (JP, A) 176884 (JP, U)

Claims (5)

(57) [Claims] 1. An apparatus for listening using an earphone (or headphones), a wireless remote controller for performing an operation corresponding to each function control of the apparatus, and a connection to the apparatus via a connector. And an earphone (or headphones) having a predetermined code, wherein the remote control has an operation button and a random number for randomly generating an identification code of a remote control signal by operating the operation button.
Code generating means, and storing the generated identification code.
Memory and the corresponding operation button when operating the operation button
The selected identification code is synthesized with the
And encoding processing unit that, a transmitting means for transmitting the weak radio wave, the modulating means modulates said oscillation means in response to said coded remote control signals provided, whereas, in the apparatus main body, originating from the remote controller a reception circuit section capable of receiving a remote control signal via the connector captured in earphone code, a demodulating means for demodulating a remote control signal coded received by the reception circuit section, those
The device body serves as a random code generating means of the remote control.
The first time an identification code generated by
A memory for storing an identification code in the remote control signal, and a control circuit for controlling a predetermined function of the device main body based on the demodulated signal, wherein the earphone code antenna captures a control signal corresponding to a control operation of a remote controller. The remote control signal identification
Code and the identification code stored in the device's memory
A remote control device characterized in that predetermined function control of the device main body is performed only when they match . Wherein the generation of the code by the remote controller identification code randomly generating means, remote control device according to claim 1, wherein configured to perform when the battery is changed in the remote. Wherein the identification code stored in the device body of the memory, according to claim 1, characterized by being configured to perform with After replacement of the device body, the identification code in the first input remote control signal Remote control device. 4. Changing the storage of the identification code in the memory of the device main body is performed by pressing the identification code change button of the remote control in a standby state in which only the demodulation means for demodulating the remote control signal received by the device main body and the receiving circuit is operating. remote control device according to claim 1, characterized by being configured to perform only when receiving the identification code forced switching code outputted by. 5. A receiving circuit unit having a carrier detection circuit,
A demodulator comprising a comparator for shaping a waveform of a remote control signal and a holding circuit for setting and holding a reference voltage of the comparator with a signal detected by the carrier wave detection circuit, and two types of codes having different pulse widths. 2. The remote control device according to claim 1, wherein the demodulated remote control signal can be demodulated.