JPH07107566A - Remote controller - Google Patents

Abstract

PURPOSE:To provide a portable audio equipment having a wireless remote controller with high operability. CONSTITUTION:This device is composed of a remote control part A composed of an operation switch 1, remote controller control circuit 3, high frequency modulator 4 and transmission antenna 6 for weak radio waves or the like and a main body part 13 of the audio equipment for attaching and detaching the remote control part A, the main body part B of the equipment is composed of a switch 15 for detecting the attaching/detaching state of the remote control part, reception circuits 8 and 9 for transmitted signals from the remote control part A, and main body control circuit 11 for demodulating the transmitted signals and outputting those signals while controlling them, when the remote control part A is detached, the reception circuits 8 and 9 at the main body B of the audio equipment are operated, when the remote control part A is mounted, the reception circuits 8 and 9 are stopped, on the other hand, the remote control part A is provided with a command switch 2 for canceling the reception waiting state of the main body B and when the remote control part A is detached from the main body B of the equipment, the operations of the reception circuits 8 and 9 at the main body B of the equipment are forcedly stopped.

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 audio equipment such as battery-powered portable headphone stereos and CD players.

[0002]

2. Description of the Related Art In recent years, it has been essential to attach a remote control device to a small audio device represented by a headphone stereo in order to improve operability.

FIG. 4 shows a conventional wireless remote control device for a headphone stereo. In FIG. 4, reference numeral 30 denotes a remote control transmission section (hereinafter referred to as a remote control section).
The signal from the remote control unit 30 controls a predetermined operation of an audio device main unit (hereinafter, referred to as a device main unit) 31 having a remote control receiving unit. The remote control unit 30 includes an operation switch 32, a remote control control circuit 33, a high frequency converter 34, a local oscillator 35, a transmission antenna 36, and the like. In addition, the device body 3
Reference numeral 1 is composed of an earphone 37, a high frequency amplifier circuit 38, a detection demodulator circuit 39, a reproducing means 40 including a tape mechanism, a low frequency amplifier 41, a main body control circuit 42, a transistor switch 43, a standby switch 44, a DC power supply 45 and the like. ing.

In the above structure, the remote control unit 30 and the device body unit 31 are separated and independent, and when the device body unit 31 is controlled by the operation of the remote control unit 30, first the standby switch 44 is turned on and the input is made. A command is output from the main body control circuit 42, the transistor switch 43 is turned on, power is supplied to the high frequency amplification circuit 38 and the detection demodulation circuit 39 to operate them, and the radio wave standby state of the remote control command from the remote control unit 30 is set. .

In the normal operation, when the operation switch 32 of the remote control unit 30 is pushed, the remote control circuit 33 generates a serial transmission code corresponding to the operation command, and the high frequency converter 34 and the local oscillator 35 perform the high frequency conversion by the heterodyne method. Then, the signal is amplified and output as a transmission signal from the transmission antenna 36. Then, in the device main body 31, the transmission signal from the remote controller 30 is received by the cord of the earphone 37 which also serves as the receiving antenna, demodulated by the high frequency amplifier circuit 38 and the detection demodulation circuit 39, and the main body control circuit 4
It is possible to control the operation of the device main body 31 such as the reproducing means 40 by confirming the command of the operation switch 32, which is decoded by 2, and outputting the control. It should be noted that the device body is a portable type, and when used, it is often put in a bag or the like.

Further, as such a wireless transmission type remote control device, the remote control control circuit 3 of the remote control section 30.
3 has a transmission / reception recognition specific code generating means, transmits this specific code by superimposing it on the operation command code, and confirms that it matches the specific code previously stored in the main body control circuit 42 of the device main body 31. Therefore, a remote control device has been proposed in which the operation command of the remote control unit 30 is confirmed. This is because even if a transmission signal from another remote control device of the same type is received by the device main body 31, if the transmission / reception recognition specific code does not match, it is determined to be invalid, and malfunction can be prevented. Is. As the setting method of the specific code,
For example, when one of the operation switches 32 of the remote control unit 30 is used as a reset switch and this switch is turned on, the remote control control circuit 33 of the remote control unit 30 causes the remote control unit 30 and the device main unit 31 to have different specific codes from the pre-set state. It is generated by the code of the content and automatically transmitted, and the main body control circuit 42 of the device main body 31 sets and stores the changed specific code in the internal storage means. The operation of changing the specific code by the reset switch described above is performed by the remote controller 3
This is necessary when the 0 power supply battery is replaced, or when a remote control device of the same type is used in the vicinity and an interference malfunction occurs.

[0007]

However, in the conventional remote control device as described above, in order to prevent the power supply battery of the main body of the device from being consumed, the standby circuit is activated for the first time to activate the receiving circuit and enter the reception standby state. Although it is possible to receive the operation command set and transmitted from the remote control unit, there is a problem that the operability is poor, such as reception standby unless the standby switch is pressed.

In addition, when the remote controller is downsized to improve portability, the remote controller is apt to be lost.

Further, when a plurality of remote control devices of the same type are used in the vicinity and the specific codes for transmission / reception recognition between the remote control unit and the device main unit coincide with each other and an erroneous operation occurs due to interference, the reset switch is pushed to press the remote control unit and the device main unit. There is a problem in that it is necessary to reset the specific code for transmission / reception recognition between the units and invalidate the signal from the other remote control device, and the operation is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide an excellent remote controller having improved operability and portability.

[0011]

In order to solve the above-mentioned problems, a remote control device of the present invention comprises a remote control unit, an operation switch, a remote control circuit for converting a transmission code corresponding to an operation command signal, and a transmission. The audio device main body, which is equipped with a high-frequency converter that modulates and synthesizes a code into a high-frequency transmission signal and an antenna that radiates weak radio waves, has a remote controller attachment / detachment detection switch that detects the attachment / detachment state of the remote controller. And a receiver circuit that receives and demodulates a transmission signal from the remote control unit and a main body control circuit that decodes and outputs the operation command signal received by the reception circuit, and the remote control unit is separated from the main body of the audio device. When the receiver circuit of the audio device main body is operated, and when the remote controller is mounted, the receiver circuit is stopped. It is.

Further, the remote control device of the present invention is provided with a reception standby state cancellation command switch for the audio equipment main body in the remote control part, and when the remote control part is detached from the audio equipment main body part, the reception standby status cancellation command switch described above is provided. By inputting the release command signal by the operation of to the remote control circuit, the remote control circuit converts it to the transmission code corresponding to the release command signal, and by transmitting this, the operation of the receiving circuit of the audio equipment main unit is forced. It is configured to stop.

[0013]

The present invention has the above-described configuration, and when the remote control unit is used, the remote control unit does not have to select the reception standby / release state of the remote control signal described in the conventional example without turning on / off the standby switch of the main body unit. When the remote control unit is detached from the unit, the device main body unit is automatically selected in the reception standby state, and the reception standby state is released by mounting the remote control unit on the device main unit unit.

Further, even when the remote control unit is detached from the device body unit and the device body unit is automatically selected to be in the reception standby state, the device body unit is operated by the operation command of the reception state release switch of the remote control unit. The reception standby state can be forcibly released and stopped.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a remote control device of the present invention will be described in detail below with reference to FIGS.

FIG. 1 is a block diagram of a remote control device according to a first embodiment of the present invention, in which A is a remote control transmission unit (hereinafter referred to as a remote control unit) and B is a remote control unit.
Is an audio device main body (hereinafter referred to as a device main body), both A and B are configured separately and independently, and the remote controller A is configured to be attachable to and detachable from the device main body B.

In the remote control unit A, 1 is a plurality of operation switches, 2 is a reception standby state release switch, 3 is a remote control circuit, 4 is a high frequency converter, 5 is a local oscillator, and 6
Is a transmitting antenna. Here, the remote controller control circuit 3
Is a transmission signal generating means 3a and an operation command code generating means 3b.
And release command code generation means 3c, and the transmission signal generation means 3a generates a transmission signal corresponding to the pressed state of the operation switch 1 and the reception standby state release switch 2.

In the device body B, 7 is an earphone whose cord is also used as a receiving antenna,
8 is a high frequency amplification circuit, 9 is a detection demodulation circuit, 10 is a low frequency amplifier, 11 is a main body control circuit, 12 is a DC power supply, 13 is a transistor switch, 14 is a reproducing means including a tape mechanism, and 15 is a remote controller attachment / detachment detection switch. is there. Here, the main body control circuit 11 performs control output based on a transmission signal or a detection signal from the remote control unit A.
It has a and a storage means 11b for storing a code that matches the code for decoding the encoded transmission signal. The reproducing means 14 is composed of a tape mechanism including a head 14a, a reproducing amplifier 14b, and the like.
A motor for driving the mechanism, a plunger (not shown) and the like are controlled by the main body control circuit 11. Further, the remote controller attachment / detachment detection switch 15 is
The remote control unit A is on when it is attached to the device body B, and is off when it is detached, and the on / off state can be detected by the body control circuit 11.

The operation of the remote controller constructed as described above will be described below. First, when the device body B is controlled by operating the remote control unit A, the remote control unit A is detached from the device body B. Due to this detachment, the remote controller attachment / detachment detection switch 15 changes from the on state to the off state, and when the main body control circuit 11 detects this state, the main body control circuit 11 causes the transistor switch 13 to switch.
A control command for turning on is output, power is applied to the receiving circuit composed of the high frequency amplification circuit 8 and the detection demodulation circuit 9 to operate it, and the remote control unit A enters a radio wave standby state for a remote control command.

When the operation switch 1 of the remote control unit A is pushed while the remote control unit A is detached from the device main body B, the remote control circuit will correspond to the operation state of the operation switch 1. The operation command code generator 3b of 3 generates an operation command code, and the transmission signal generator 3a synthesizes the serial transmission code to generate a transmission signal, and the high frequency converter 4 and the local oscillator 5 perform high frequency conversion by the heterodyne method. And amplified and transmitted antenna 6
Is output as a transmission signal. In the device body B, the transmission signal from the remote controller A is received by the cord 7a of the earphone 7 as a receiving antenna, demodulated by the high frequency amplification circuit 8 and the detection demodulation circuit 9, and the body control circuit 11
At, the received operation command code is compared and decoded with the code stored in the storage means 11b, a control command corresponding to the operation of the operation switch 1 is output, and the operation of the device body B such as the reproduction means 14 is performed. Is something that can be controlled.

Further, when the remote control unit A is detached from the device body B, the reception standby state release switch 2
When is turned on and the release command signal is input to the remote controller control circuit 3, the remote controller control circuit 3 generates a serial transmission code for canceling the reception state, transmits it in the same manner as the above operation command signal, and transmits it to the device main body B. Received by the main body control circuit 1
1, the main control circuit 11 decodes the release command signal, turns off the transistor switch 13 by the control output according to the release command signal, and turns off the power of the receiving circuit including the high frequency amplification circuit 8 and the detection demodulation circuit 9. , Will stop the operation.

Next, the operation described above will be described based on the control flow shown in FIGS.

First, the control flow of the device body B shown in FIG. 2 will be described. When the detachment of the remote controller A is detected in step S1 and the remote controller attachment / detachment detection switch 15 changes from ON to OFF, the process proceeds to the next step S2. Then, the main body control circuit 11 outputs a control output for turning on the transistor switch 13 and enters a standby state for a remote control signal. Next, in step S3, the presence or absence of a remote control transmission signal is determined. If there is a signal, the process proceeds to the next step S4 to decode the transmission code of the transmission signal, and in steps S5 and S6 an operation command signal or a cancellation command. Determine if it is a signal. Here, when the signal is the operation command signal, the process proceeds from step S5 to step S7, and the main body control circuit 11 causes the main body control unit B such as the reproducing means 14 to perform the operation.
The control output of the operation is output, and the predetermined operation of the device body 11 is performed in step S8. On the other hand, in the case of the release command signal, the process proceeds from step S5 to step S9 to generate the OFF control output of the transistor switch 13 and stop the remote control signal standby state of the receiving circuit. If there is no signal in step S3, the process returns to the entry side, and if it is determined in step S6 that there is no signal, the control flow returns to the entry side in step S3.

Next, the control flow of the remote control unit A shown in FIG. 3 will be described. In steps S11 and S12, it is judged whether the operation command switch 1 and the release command switch 2 are turned on, and the operation command switch 1 is turned on. For example, the process proceeds from step S11 to step S13 to activate the remote control circuit and generate an operation command code in step S14. On the other hand, if the release command switch 2 is on, the process proceeds from step S12 to step S15 to activate the remote controller control circuit, and at the same time a reception state release command code is generated in step S16. Then, steps S14 and S1
From step 6, the process proceeds to step S17, where it is synthesized as a transmission serial signal, and in step S18 the high frequency conversion circuit 4
It is output as a transmission signal to. Finally, in step 19, the remote controller control circuit is stopped and the process ends.

As described above, according to this embodiment, the selection of the reception standby / release state of the remote control signal described in the conventional example is used without using the on / off operation of the standby switch of the device main body. At this time, by detaching the device body from the device body, the device body is automatically selected in the reception standby state. Also, if the remote control unit is attached to the device body, the reception standby state is automatically canceled.

When a plurality of reception state release command switches and operation command switches are used by one operation button and they are pressed once or twice or pressed for a certain time or longer,
The respective operation states may be distinguished or regarded as the state of the reception state release command.

[0027]

As described above, according to the present invention, the remote control unit is
The remote control unit includes an operation switch, a remote control control circuit for converting the operation code into a transmission code, a high frequency converter for modulating and combining the transmission code into a high frequency transmission signal, and an antenna for radiating a weak electric wave. The detachable audio device main body includes a remote control attachment / detachment detection switch for detecting the attachment / detachment state of the remote control portion, a reception circuit for receiving and demodulating a transmission signal from the remote control portion, and a transmission signal received by the reception circuit. A main body control circuit that decodes and outputs a control signal corresponding to an operation command, operates the receiving circuit of the audio device main body when the remote control part is separated from the audio device main body part, and operates the receiving circuit when the remote control part is attached. Since it is configured to stop the receiving circuit,
When the remote control unit is used, it is simply detached from the device body unit, and the device body unit is automatically selected to be in the reception standby state. Further, if the remote control unit is attached to the device main body, the reception standby state can be automatically canceled, and a remote control device with excellent operability can be provided.

Further, the remote control unit is provided with a reception standby state release command switch for the audio device main body, and when the remote control unit is detached from the audio device main body unit, a release command signal by operating the reception standby state release command switch is sent. By inputting to the remote control control circuit, the remote control control circuit converts into a transmission code corresponding to the release command signal, and by transmitting this, the operation of the receiving circuit of the audio device main body is configured to be forcibly stopped. Even if the remote control unit is detached from the device main unit and the device main unit is automatically selected for the reception standby state, the device main unit forcibly enters the reception standby state by operating the reception standby state release switch on the remote control unit. It can be canceled and stopped.

[Brief description of drawings]

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

FIG. 2 is a control flow chart of the main body of the device.

FIG. 3 is a control flow chart of the remote control unit.

FIG. 4 is a circuit diagram of a conventional remote control device.

[Explanation of symbols]

 A remote control unit B device main body 1 operation command switch 2 reception standby state cancellation command switch 3 remote control control circuit 4 high frequency converter 5 local oscillator 6 transmission antenna 7 earphone 8 high frequency amplification circuit 9 detection demodulation circuit 10 low frequency amplifier 11 main body control Circuit 12 DC power supply 13 Transistor switch 14 Playback device 15 Remote control attachment / detachment detection switch

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location H04B 1/16 M 7739-5K

Claims (2)

[Claims] 1. The remote control unit includes an operation switch, a remote control control circuit for converting a transmission code into a transmission code corresponding to an operation command signal, a high frequency converter for modulating and synthesizing a transmission code into a high frequency transmission signal, and a weak radio wave. The audio device main body, which is equipped with an antenna for radiating, and to which the remote controller is detachable, includes a remote controller attachment / detachment detection switch that detects an attachment / detachment state of the remote controller, a receiving circuit that receives and demodulates a transmission signal from the remote controller, and its A main body control circuit that decodes a transmission signal received by the reception circuit and outputs a control signal corresponding to an operation command, and operates the reception circuit of the main body of the audio device when the remote control part separates from the main part of the audio device. The remote control device is configured to stop the receiving circuit when the remote control unit is mounted. 2. The remote control unit is provided with a reception standby state cancellation command switch for the audio device main unit, and when the remote control unit is detached from the audio device main unit, a cancellation command signal is generated by operating the reception standby status cancellation command switch. By inputting to the remote controller control circuit, the remote controller control circuit converts it into a transmission code corresponding to the cancellation command signal, and by transmitting this, the operation of the receiving circuit of the audio device main unit is forcibly stopped. The remote controller according to claim 1, wherein the remote controller is a remote controller.