JPH0262989B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for remotely controlling a recorder attached to a base unit of a wireless telephone using a handset.

[Conventional technology]

2. Description of the Related Art Conventionally, there is a device in which a recorder is attached to a telephone to record notes to be taken during a telephone conversation.

[Problem to be solved by the invention]

By the way, since the recorder is attached to the base unit, when the base unit and handset are separated, such as in a wireless telephone, it is possible to take notes during a call from a place far away from the base unit of the telephone. There was the inconvenience of having to go to the base of the telephone and turn on the recorder whenever the need arose.

The present invention has been made by focusing on the above problem, and it uses a recorder attached to the base unit of a wireless telephone.
A recorder remote control for a wireless telephone equipped with a recorder control circuit provided in the base unit for operation by wireless remote control from the handset and a confirmation signal transmission circuit that wirelessly transmits the control status of the recorder to the handset. The purpose is to provide equipment.

[Means for Solving the Problems] The configuration of the radio telephone recorder remote control device of the present invention to achieve the above object is as follows: A recording remote control device for a wireless telephone comprising a handset that transmits and receives signals and has a control switch for the recorder, the base unit having a recorder that operates upon receiving a wireless recorder control signal from the handset. A control circuit and a confirmation signal transmission circuit for wirelessly transmitting the control state of the recorder to the handset are provided, and the recorder control circuit supplies the output signal of the detection circuit of the received radio wave to a demultiplexer, and outputs the output of the demultiplexer. The signal is applied to a decoder that converts the signal into a control signal for the recorder, and the control signal output from the decoder is applied to a drive control terminal of the recorder and the confirmation signal generation circuit, and the confirmation signal generation circuit controls the control signal. The signal is applied to a multiplexer to convert it into corresponding binary data, and the binary data is applied to an adder circuit provided in a wireless transmission circuit of the base unit to be superimposed on the audio side transmission signal to be transmitted, and the demultiplexer and The switch used for address control of each multiplexer is a common switch.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

On the base unit side, as shown in Figure 1, in the base unit of a normal radio telephone, the output valid display terminal of the demultiplexer IC ₆ connected to the FM detector 19 is connected to the relay Ry via the inverter G ₉ and the transistor Q ₁ . The data output terminals D ₁ to _{D 3} are connected to a control terminal (not shown) of a conventional electronically driven recorder 27 via a decoder IC ₇ , and are also connected to data inputs D ₁ to _{D 3} of a multiplexer IC ₈ . The photocoupler 23 is connected to the transmission enable terminal TE of the multiplexer IC ₈ via the inverter G ₈ , and the output terminal OUT of the multiplexer is connected to the input terminal of the adder IC ₉ together with the output of the buffer amplifier 24 . ,
Address terminals _A1 to _A5 of demultiplexer IC ₆ and multiplexer IC ₈ are commonly connected to switches _S14 to _S18 .

That is, FM detector 19, demultiplexer IC ₆ ,
The recording control circuit of this embodiment is configured by the decoder IC ₇ and the drive control terminal (not shown) of the recorder 27,
The confirmation transmitting circuit of this embodiment is composed of multiplexer IC ₈ and adder IC ₉ , and switches S ₁₄ to
_S16 constitutes a switch used for address control in this embodiment.

On the handset side, as shown in FIG. 2, in the handset and receiver of a normal wireless telephone, the output valid display terminal of the demultiplexer IC ₁ connected to the output of the FM detector 5 is connected to the tone oscillator ₉ via the inverter G1. is connected to the input of the standby switch, and its output is connected to the input of the standby switch.
S _2b and at the same time connected to the input of the NOR gate G ₅ together with the standby switch S _2a , the output of the OR gate G ₆ whose output and the output terminal MUTE of the dialer 10 are connected to the input is connected to the mutating 7; The data output terminals _D1 ~ _D3 are connected to the light emitting diodes _LED1 ~ _LED6 via the decoder _IC2 ,
Recorder control switches S ₃ to _{S 6} are connected to data input terminals D ₁ to _{D 3} of multiplexer IC ₃ via encoder IC ₄ .
The output terminal OPL of the dialer 10 is connected to the transmit enable terminal TE of the multiplexer through an inverter G ₇ , and the output terminal OUT of the multiplexer, together with the output of the audio amplifier 12, is connected to the input terminal of the adder IC ₅ . connected to address terminal A ₁ of demultiplexer IC ₁ and multiplexer IC ₃
~ _A5 is commonly connected to switches _S9 ~ _S13 .

That is, in FIG. 2, the FM detector 5, demultiplexer IC ₁ , decoder IC ₂ and light emitting diode
LED ₁ to _{LED 6} and switches S ₉ to _{S 13} constitute a circuit that confirms the control status of the recorder by the base unit on the handset side, and includes recorder control switches S ₃ to _{S 6} , encoder IC ₄ , and multiplexer. IC ₃ , adder IC ₅ and switches S ₉ to _{S 13} constitute a circuit that transmits a signal to control the recorder.

Among the unexplained symbols in the drawing, 1 and 15 are high frequency amplifiers, 2 and 16 are mixers, 3 and 17 are local oscillators, 4 and 18 are intermediate frequency amplifiers, 8 is an audio amplifier, and 11 is a keyboard, 13 and 25 are modulators,
14 and 26 are high frequency power amplifiers, 20 is a tone trap, 6 and 21 are buffer amplifiers, 22 is a hybrid transformer, G ₂ and G ₃ are inverters, G ₄ is a gate, R ₁ to _{R 29} are resistors, C ₁ to _{C 7} are capacitors, S ₁ is power switch, SP is speaker, MIC is microphone, BAT is battery, ANT ₁ to _{ANT 4}
is the transmitting and receiving antenna, A is the receiver on the handset side,
B is a transmitter on the handset side.

Next, the operation of the present invention will be explained in detail.

Normally, the output of the dialer 10 on the handset side
OPL is at high (H) level, and multiplexer IC ₃ is in a transmittable state. When a user needs to record the contents of a telephone call, press any of the recorder control switches _S3 to _S8 to remotely control the recorder 27 on the handset side. Corresponding encoder IC ₄ input terminal
D ₁ to _{D 6} become high (H) level, and a corresponding binary number is output to the output terminal. For example, when switch _S5 is pressed, the encoder outputs the binary number "101", which corresponds to the decimal number "5".

At this time, even if two or more switches are pressed at the same time, the binary number corresponding to the switch with a higher priority becomes the encoder output according to the priority order within the encoder IC ₄ .

Then, in multiplexer IC ₃ , the resistance R ₁₅ ,
The oscillation frequency determined by R ₁₆ and capacitor C ₃ is divided to provide data input D ₁ - _{D 3} and address input A ₁ -
Converts the state of A ₃ to serial data and outputs it in the specified order. At this time, data input is selected from two states: high (H) and low (L) levels, while address input is selected from three states: high (H) and low (L) levels, and open state. .

In other words, when switch S ₅ is pressed, switch S ₉ ~
When the state of S ₁₃ is as shown in FIG. 2, the output of multiplexer IC ₃ is as shown in FIG.
Output signal of multiplexer IC ₃ and audio amplifier 12
The outputs _of
is FM modulated and transmitted wirelessly.

The mother side receives this signal and transmits it to the FM detector 19.
A portion of the voice signal is detected by the tone trap 20, removes the oscillation signal of the multiplexer IC ₃ , and transmits only the audio signal to the telephone line via the hybrid transformer 22, and a portion is input to the demultiplexer IC ₆ .

The oscillation frequency of the demultiplexer IC ₆ determined by the resistors R ₂₂ , P ₂₃ and the capacitor C ₅ is matched with the oscillation frequency of the multiplexer IC ₃ , and the input serial data output of the multiplexer IC ₃ is demodulated and sent to the switch S ₁₄ . −S ₁₈ selected address input A ₁ ~
If the address matches the signal received in state _A5 , the received data, which is exactly the same binary number as that sent from the handset, is output to data output terminals _D1 to _D3. Therefore, this binary data is converted into a decimal number by the decoder IC ₇ to drive the normal recorder 27. At the same time, the output of the demultiplexer IC ⁶ is also connected to the multiplexer IC ₈ , and is converted into serial data again by the above-mentioned action, and is added to the output signal of the hybrid transformer 22 by the calculator IC ₉ , and sent to the FM modulator 25. is FM modulated and transmitted wirelessly.

This signal is again sent to the demultiplexer on the handset side.
Demodulated into binary data through IC ₁ and sent to decoder IC ₂
The corresponding light emitting diode is converted in decimal format with
The LED will light to indicate whether the recorder control signal on the handset side has been accurately transmitted to the base unit side.

Additionally, if a call comes in from outside while the standby switches S _2a and S _2b on the handset side are in the standby (STBY) state, the photocoupler 23 detects that a current is applied to the telephone line, and Corresponding to the interruption, the state of the transmission enable terminal of multiplexer IC ₆ is continuously converted to high (H) and low (L) levels, but if it is at high (H) level, the transmission of multiplexer IC ₈ is stopped. interrupted,
In the case of low (L) level, the transmission is continued and the state of the corresponding output valid display terminal of demultiplexer IC ₁ is converted to high (H) and low (L) level. ) level, the tone oscillator 9 and the Noah gate
The input of _G5 becomes high (H) level, tone oscillator 9 oscillates, and muting is canceled at the same time, so the tone oscillator signal is intermittently output from speaker SP to notify that an external phone call has arrived. It turns out.

Also, when making a call from the handset,
The output terminal OPL of the dialer 10 becomes low (L) intermittently, and the terminal of the demultiplexer IC ₆ on the motherboard side becomes low (L) due to the above-mentioned action.
level, relay Ry is turned on and off and a call can be made.

(Effects of the Invention) Since the present invention is configured as described above, the following effects can be obtained.

That is, the recorder control circuit installed in the base unit allows a user of the handset who makes a call from a place far away from the base unit to control the recorder installed in the base unit in order to record the content of the call. Moreover, since the control state of the recorder can be transmitted from the base device to the handset and receiver, a highly reliable recorder remote control device for a wireless telephone can be provided.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of a wireless telephone recorder remote control device of the present invention according to an embodiment, and FIG. 2 shows a confirmation circuit and a recording control transmission circuit provided in the handset used in the embodiment shown in FIG. Circuit diagram, Figure 3 is the first
It is a time chart of a binary signal corresponding to the recorder control support content shown in the figure. IC ₆ ... Demultiplexer, IC ₇ ... Decoder,
IC ₈ ……Multiplexer, IC ₉ ……Adder, S ₁₄ ~
S ₁₈ ...Switch, 19...FM detector, 27...
...Recorder.

Claims (1)

[Scope of Claims] 1. A recording remote control device for a wireless telephone comprising a base unit equipped with a recorder and a handset that transmits and receives wireless communication between the base unit and has a control switch for the recorder, The base device is provided with a recorder control circuit that operates upon receiving a wireless recorder control signal from the handset and a confirmation signal transmission circuit that wirelessly transmits the control state of the recorder to the handset, The machine control circuit supplies the output signal of the detection circuit of the received radio wave to a demultiplexer, supplies the output signal of the demultiplexer to a decoder that converts it into a control signal for the recording machine, and converts the control signal output from the decoder into a control signal for the recording machine. the control signal to a drive control terminal of the machine and the confirmation signal transmission circuit, the confirmation signal transmission circuit supplies the control signal to a multiplexer to convert it into corresponding binary data, and the binary data is transmitted wirelessly to the base machine. This consists of using a common switch which is applied to an adder circuit provided in the circuit to be superimposed on the audio side transmission signal to be transmitted, and which is used for address control of each of the demultiplexer and the multiplexer. Wireless telephone recorder remote control device.