JPH08265427A - Communication equipment and incoming call informing device - Google Patents

Abstract

PURPOSE: To obtain an incoming call informing device capable of surely informing incoming by simple and inexpensive constitution. CONSTITUTION: At the time of detecting an incoming call, a transmission signal having comparatively low frequency such as several MHz band is transmitted from a telephone set. Frequency shift keying(FSK) based on a prescribed code is applied to a carrier in the transmission signal. The transmission signal is received by an antenna 31 and demodulated by an FSK demodulator 33. A code extractor 34 extracts the prescribed code from the demodulated signal and outputs the extracted code to an output side. An internal set code matched with a prescribed code for a telephone set constituting a system is previously set up by a dip switch part 35. When the incoming is detected, the transmission signal is transmitted from the telephone set and the prescribed code is extracted by the extractor 34, an output signal from a comparator 36 is turned to a high level 'H', a motor 38 is oscillated and a diode 40 is emitted to inform the incoming. Since the frequency of the transmission signal is comparatively low frequency, high accuracy is not requested and the device can be simply and inexpensively constituted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication device and an incoming call notification device. More specifically, when an incoming call is detected, a communication signal and an incoming call notification device that can notify the incoming call with a simple and inexpensive structure by transmitting a transmission signal of a relatively low frequency from the communication device to the incoming call notification device to notify the incoming call It is related to.

[0002]

2. Description of the Related Art Cellular phones, which are capable of talking by being wirelessly connected to a base station, have become widespread. By using a mobile phone, the user can make a phone call anytime and anywhere in the service area, which is very convenient. On the other hand, however, since such a mobile phone can call at any time, there is a case where a ringing sound is output even during a conference and the conference is disturbed. As a solution to this problem, there has been proposed a mobile phone having a vibration call function that vibrates the mobile phone body to notify an incoming call. In a mobile phone having a vibration calling function, if the mobile phone is housed in an inner pocket of a jacket, for example, an incoming call can be known even during a meeting without disturbing others.

[0003]

In order to use the vibration calling function of the mobile phone, it is necessary to store the mobile phone in a place where vibration can be sensed, such as the above-mentioned inner pocket, and carry it around. It is often difficult for people who wear clothes without inner pockets. As a solution to this, a device dedicated to incoming call detection, which is separate from the mobile phone body, has been proposed. This device is, for example, a pin type device that can be easily attached to clothes by a clip or the like.

In response to the call signal sent from the base station, the mobile phone sends back a response signal peculiar to the mobile phone (a signal for returning that the call signal issued by the base station has been certainly received). The above-mentioned device exclusively for detecting an incoming call detects the response signal and drives the vibration generator. However, since the response signal is a high frequency signal in the 1.9 GHz band, for example, a device dedicated to incoming call detection is required to have high accuracy. Therefore, the conventionally proposed device exclusively for detecting an incoming call has a problem that the structure becomes complicated and the cost becomes high.

Therefore, the present invention provides a communication device and an incoming call notification device that can reliably notify an incoming call with a simple and inexpensive structure.

[0006]

A communication device according to the present invention comprises an incoming call detecting means for detecting an incoming call, a memory means for storing a predetermined code in advance, and a memory means for detecting an incoming call by the incoming call detecting means. A memory read control means for reading a predetermined code, a signal processing means for frequency-modulating a carrier wave having a relatively low frequency according to the predetermined code read from the memory means to form a transmission signal, and the signal processing means. And wireless transmission means for transmitting the transmission signal formed by.

An incoming call notification device according to the present invention includes a radio receiving means for receiving a transmission signal formed by modulating a carrier wave of a relatively low frequency according to a predetermined code, and a signal received by the radio receiving means. Signal processing means for demodulating the signal, code extracting means for extracting the predetermined code from the signal obtained by demodulating by the signal processing means, and the predetermined code extracted by the code extracting means coincides with the internal setting code. It is provided with a code comparison means for determining whether or not there is a code comparison means, and a notification drive means for driving the incoming call notification means when the code comparison means determines that there is a match.

[0008]

In the communication device, when the incoming call detecting means detects an incoming call, the memory reading control means reads out a predetermined code from the memory means. Then, in the signal processing means, a carrier signal in a relatively low frequency, for example, a few MHz band is modulated according to the predetermined code to form a transmission signal, and the transmission signal is transmitted to the incoming call notification device by the wireless transmission means. .

In the incoming call notification device, the transmission signal from the communication device is received by the wireless reception means and demodulated by the signal processing means. The code extracting means extracts a predetermined code from the demodulated signal. Then, the code comparison means determines whether or not the extracted predetermined code and the internally set code match, and when it is determined that they match, the notification drive means drives the incoming call notification means, for example, the vibration generator to notify the incoming call. To be done.

As a result, when the internal setting code of the incoming call notification device is set to the same code as the predetermined code stored in the memory means of the communication device, the incoming call detection means of the communication device detects that an incoming call has been received. The incoming call notification means of the incoming call notification device is driven to notify the incoming call.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. This example is a simple mobile phone (PH
S: Personal Handyphone System).

FIG. 1 shows a simplified mobile phone 100. The simplified mobile phone 100 of this example includes a radio unit 2 for performing radio communication with a base station, a digital modulator / demodulator 3 for performing π / 4 shift QPSK modulation and demodulation processing, and slots for a plurality of channels. A TDMA (Time Division Multiple Access) processing unit 4 for handling multiple signals, an audio codec unit 5 for performing compression encoding and decoding of an audio signal, and a microcomputer as a system controller ( Hereinafter, it will be referred to as a "microcomputer") 8.

The signal from the base station received by the antenna 1 is supplied to the digital modulation / demodulation unit 3 via the radio unit 2 and subjected to π / 4 shift QPSK demodulation processing. The signal demodulated by the digital modulation / demodulation unit 3, that is, the time division multiplexed signal of slots for a plurality of channels is supplied to the TDMA processing unit 4. In the TDMA processing unit 4, under the control of the microcomputer 8, a preset slot is selected from a multiplexed signal of slots for a plurality of channels, and compressed audio data and control data are separated from the selected slot.

The control data output from the TDMA processing unit 4 is supplied to the microcomputer 8. In addition, the TDMA processing unit 4
The compressed audio data output by the above is supplied to the audio codec section 5 and subjected to decoding processing (including error correction processing) and then converted into an analog signal. Then, the received audio signal output from the audio codec unit 5 is supplied to the speaker 6 constituting the receiver via the speaker amplifier 18.

The transmission voice signal output from the microphone 7 constituting the transmitter is supplied to the voice codec section 5 via the microphone amplifier 19 and subjected to compression coding processing (including error correction coding processing). Then, it is supplied to the TDMA processing unit 4. In the TDMA processing unit 4, the compressed audio data supplied from the audio codec unit 5 is time-division multiplexed as a preset slot. In this case, the control data output from the microcomputer 8 is also multiplexed in that slot. The signal multiplexed by the TDMA processing unit 4 is supplied to the digital modulation / demodulation unit 3 and subjected to π / 4 shift QPSK modulation processing. The modulated signal output from the digital modulation / demodulation unit 3 is supplied to the antenna 1 via the wireless unit 2 and transmitted to the base station.

Even if not mentioned above, when entering the area of a predetermined base station in the power-on state, wireless communication is performed with the base station, and the location registration of being in the area of the base station is performed. This position registration is performed using the communication frequency and slot position determined as the control channel. In this case, the transmission / reception frequency of the radio unit 2 and the position of the slot selected by the TDMA processing unit 4 are controlled so as to match the communication frequency and slot position of the control channel, respectively. After the location registration, the control channel is controlled to stand by in the reception state on the control channel. In addition, the transmission and reception of the above-mentioned audio signal is performed using a communication channel as described later.

Further, the simplified mobile phone 100 of this example is
DTMF demodulation unit 9 for converting DTMF (Dual Tone Multiple Frequency) signals into key data corresponding to special input keys of "*" and "#" and numeric keys of "0" to "9", voice signal received in voice mail mode A voice recording / reproducing unit 10 for recording a received voice signal and a prerecorded response message (voice signal) by operating a key input unit described later or by controlling a microcomputer 8, and an incoming call. A ringing tone output section 11 for outputting a ringing tone under the control of the microcomputer 8 when detected, an incoming call display section 15 for emitting light under the control of the microcomputer 8 when an incoming call is detected, and a DTMF signal Conversion format storage unit 17 for converting corresponding key data into character data
have. The ringing tone output unit 11 is configured to include a speaker, a buzzer, and the like, and the incoming call display unit 15 is configured to include a light emitting diode (LED) and the like.

The DTMF demodulation unit 9 includes a voice codec unit 5
The received voice signal obtained by the decoding processing is supplied. When the received voice signal is a DTMF signal, DTMF
The demodulation unit 9 outputs key data (hereinafter referred to as “reception data”) corresponding to the DTMF signal, and this reception data is supplied to the microcomputer 8. Thereby, the microcomputer 8 can recognize that the received voice signal is the DTMF signal.

The voice recording / reproducing unit 10 is configured to have, for example, a semiconductor memory as a voice signal storage means. The operation of the voice recording / reproducing unit 10 is controlled by the microcomputer 8, and the voice recording / reproducing unit 10 supplies a signal indicating the operation state to the microcomputer 8. The voice recording / reproducing unit 10 records the received voice signal when the voice recording / reproducing mode is set by the operation of the key input unit described later.

At a predetermined address of the semiconductor memory of the voice recording / reproducing unit 10, a response message (voice signal) to be transmitted to the calling side in the voice recording mode is recorded in advance. Microcomputer 8
The response message reproduced by the voice recording / reproducing unit 10 under the control of the
The same processing as that of the voice signal output from the antenna 1 is performed and transmitted from the antenna 1 to the base station.

Further, in the portable telephone 100 of the present example, a ten key and a special input key for inputting a telephone number or the like, a call mode setting key for setting a call mode, and an answering machine mode are set in the microcomputer 8. A key input unit 12 including an answering machine mode setting key for operating the voice recording / reproducing unit 10 and an operation key for operating a reproducing operation of the voice recording / reproducing unit 10 is connected. In this case, one of the two calling modes is set by the calling mode setting key of the key input unit 12. The two types of call modes are a sound call mode for making a call by outputting a ring tone and a vibration call mode for making a call by vibrating the telephone body.

In the portable telephone 100 of this embodiment, the microcomputer 8 is provided with a call key 13 for switching from the on-hook state to the off-hook state and vice versa, the telephone number of the other party at the time of calling, the state of the system, and the transmission. The display unit 14 for displaying the received text message, the setting information of the calling mode, the setting information of the answering machine mode, the non-volatile memory 16 for storing the text message data sent from the other party are connected. To be done. The non-volatile memory 16 also stores a predetermined code, which is an 8-bit code in this example, used for operating the incoming call notification device described later. The nonvolatile memory 16 is, for example, EEPRO.
It is composed of M (Electrically Erasable Programmable ROM) and the like.

Further, the simplified mobile phone 100 of this example is
It has an FSK modulator (digital frequency modulator) 20. FSK (Frequency Shift Keying) is for frequency-modulating a carrier wave according to "1" and "0" of a digital signal. The FSK modulator 20 executes the modulation processing operation under the control of the microcomputer 8 when an incoming call is detected in the vibration calling mode.

That is, when an incoming call is detected in the vibration calling mode, the microcomputer 8 reads an 8-bit code from the non-volatile memory 16 and adds a start bit and a stop bit before and after the 8-bit code. To generate a code signal (shown in FIG. 2)
It is supplied to the modulator 20. In the FSK modulator 20, the carrier wave is frequency-modulated according to the above-mentioned code signal (digital signal) supplied from the microcomputer 8 to form a transmission signal. In this example, a carrier wave is a signal of several MHz band. The transmission signal formed by the FSK modulator 20 is
After being amplified by the RF amplifier 21, it is transmitted from the antenna 22 as a weak radio wave. The transmission of such a transmission signal is repeated until there is an incoming call and a response is made by pressing the call key 13, or the line is disconnected at the calling side, or until a predetermined time has elapsed in the recorded message mode. Be seen.

In the above structure, the telephone number of the other party is input by the key operation of the key input unit 12 and then the call key 13 is pressed.
When is pressed, first, the telephone number data or the like is supplied as control data from the microcomputer 8 to the TDMA processing unit 4 and transmitted to the base station through the control channel. As a result, a line connection is established with the other party and a call is possible.

Here, the call is carried out using the call channel, and the data of the communication frequency and slot position of the call channel is transmitted as control data from the base station using the control channel during the line connection process to perform the TDMA process. It is supplied from the unit 4 to the microcomputer 8. The microcomputer 8 controls the radio unit 2 based on the communication frequency data so that the transmission / reception frequency matches the communication frequency of the communication channel, and sets the slot selected by the TDMA processing unit 4 based on the slot position data. To do. Therefore, the call is made using the call channel notified from the base station.

Further, when call data is transmitted as control data from the base station using the control channel and this call data is supplied from the TDMA processing unit 4 to the microcomputer 8 and an incoming call is detected, the control of the microcomputer 8 is performed. The calling operation is performed. In the state where the ringing mode is set, the ringing tone output section 11 is controlled by the microcomputer 8 to output the ringing tone. On the other hand, in the state where the vibration calling mode is set, the FS is sent from the microcomputer 8 as described above.
A code signal (shown in FIG. 2) is supplied to the K modulator 20 to perform modulation processing to form a transmission signal, and the transmission signal is transmitted from the antenna 22 as a weak radio wave. Then, this transmission signal is received by the incoming call notification device described later,
An incoming call notification (calling operation) is performed by vibration or light emission display. It should be noted that when an incoming call is detected, the incoming call display section 15 is illuminated by the control of the microcomputer 8.

With this calling operation being performed,
When there is a response by pressing the call key 13, response data is supplied from the microcomputer 8 to the TDMA processing unit 4 as control data and transmitted to the base station through the control channel. As a result, a line connection is established with the other party and a call is possible. Also in this case, the call is made using the call channel notified from the base station. As described above, the control channel is used when call data is transmitted from the base station as control data. Since the call data has identification data such as telephone number data, the microcomputer 8 You can recognize that this is the call data for yourself.

As described above, the calling data is the TDM.
When the incoming call is detected by being supplied from the A processing unit 4 to the microcomputer 8, when the answering machine mode is set, the calling operation is automatically performed after the calling operation is performed for a predetermined time and the call becomes possible. . Then, after the response message indicating that the received voice signal is recorded is transmitted to the calling side, the voice recording / reproducing unit 1
At 0, the recording of the received voice signal is started.

Further, when the other party sends character message data by a DTMF signal during voice recording or during a call, the received data output from the DTMF demodulation section 9 is stored in a conversion format under the control of the microcomputer 8. The character data is converted into character data by referring to the section 17, the character data is written in the character message area of the non-volatile memory 16, and the character message based on the character data is displayed on the display section 14.

FIG. 3 shows the incoming call notification device 200. The incoming call notification device 200 of the present example has a small size, can be attached to clothes by a clip (not shown), or is incorporated in a wristwatch or the like. Incoming call notification device 200 of this example
Is an antenna 31, which receives a transmission signal transmitted from the antenna 22 of the mobile phone 100 as described above.
It has an RF amplifier 32 for amplifying the received transmission signal, and an FSK demodulator (digital frequency demodulator) 33 for demodulating the received transmission signal.

Further, the incoming call notification device 200 of this example has a code extractor 34, a dip switch section 35, and a comparator 36. The code extractor 34 is for extracting the above-mentioned 8-bit code from the output signal of the FSK demodulator 33. In the code extractor 34, by detecting the start bit from the output signal of the FSK demodulator 33,
An 8-bit code is extracted. The 8-bit code extracted by the code extractor 34 is led to the output side for a predetermined time.

The dip switch section 35 is for setting an 8-bit code as an internal setting code. The internal setting code is set in advance so as to match the 8-bit code stored in the non-volatile memory 16 of the above-mentioned simplified mobile phone 100 that constitutes a set of systems. The comparator 36 is for determining whether or not the 8-bit output of the code extractor 34 and the 8-bit internal setting code set by the dip switch unit 35 match. Then, the comparator 36 outputs a discrimination signal which becomes high level “H” when both codes match and becomes low level “L” when both codes do not match.

Further, the incoming call notification device 200 of the present example has a vibrator motor 38 for generating vibration and a light emitting diode (LED) 40 for light emission display as incoming call notification means (calling means). . The vibrator motor 38 is driven by a vibrator drive circuit 37 and vibrates when the determination signal output from the comparator 36 is at a high level "H". The light emitting diode 40 is LE
It is driven by the D drive circuit 39 and emits light when the discrimination signal output from the comparator 36 is at the high level “H”.

In the above configuration, the incoming call is detected in the vibration calling mode, and the portable telephone 10
When the transmission signal is transmitted as a weak radio wave from the antenna 22 of 0, this transmission signal is received by the antenna 31, and F
It is demodulated by the SK demodulator 33. And the code extractor 3
Since the 8-bit code that matches the internal setting code set by the DIP switch 35 in 4 is extracted, the output signal of the comparator 36 becomes a high level “H”, the vibrator motor 38 vibrates, and the light emitting diode 4
0 emits light. Therefore, the incoming call notification operation (call operation) is performed by the vibration and the light emission display.

It should be noted that, after a response is made by pressing the call key 13, the line is disconnected on the calling side, or after a predetermined time has elapsed in the recorded message mode, the portable telephone 1
Since the transmission signal is not transmitted from the antenna 22 of 00, the output code of the code extractor 34 is different from the 8-bit code described above, and the output signal of the comparator 36 becomes low level “L”, and the vibrator motor 38
And the light emission of the light emitting diode 40 stops, and the incoming call notification operation (call operation) ends.

As described above, according to the present example, a transmission signal of a relatively low frequency of several MHz is transmitted from the portable telephone 100, and the incoming call notification device 200 receives this transmission signal and displays it by vibration or light emission display. Since the incoming call notification operation is performed, the simple mobile phone 100 and the incoming call detection notification device 200 do not require high accuracy, and can be configured easily and inexpensively. In addition, the simplified mobile phone 10
Since the transmission signal is transmitted as a weak radio wave from 0, there is an advantage that the influence on other electronic devices can be avoided and the power consumption can be reduced. Further, since the incoming call notification device 200 has a simple structure, it can be significantly reduced in size, and can be easily incorporated into a wristwatch or the like as described above.

In the above embodiment, the code signal is FSK-modulated to form the transmission signal, but the transmission signal may be formed by using another digital modulation method. Further, although the above-described embodiments apply the present invention to a simple mobile phone (PHS) system, it goes without saying that the present invention can also be applied to other telephone systems and communication system such as transceivers.

[0039]

According to the present invention, when an incoming call is detected, a transmission signal of a relatively low frequency is transmitted from the communication device to the incoming call notification device, and the incoming call notification device receives this transmission signal to notify vibration, light emission, or the like. Since the incoming signal is notified and the transmission signal has a relatively low frequency, the communication device and the incoming notification device are not required to have high accuracy and can be configured easily and inexpensively. Further, since the incoming call notification device can be realized with a simple structure, it can be significantly downsized, and there is an advantage that it can be easily incorporated into a wristwatch or the like. Further, by making it possible to set the internal setting code of the incoming call notification device with the DIP switch, it is possible to easily set the internal setting code that matches the predetermined code of the communication device that is going to configure one set of systems.

[Brief description of drawings]

FIG. 1 is a system diagram showing a configuration of a simplified mobile phone as an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration example of a code signal.

FIG. 3 is a system diagram showing a configuration of an incoming call notification device as an embodiment of the present invention.

[Explanation of symbols]

 1,2,31 antenna 2 radio section 3 digital modulation / demodulation section 4 TDMA processing section 5 voice codec section 6 speaker 7 microphone 8 microcomputer 11 ringing tone output section 15 incoming call display section 16 non-volatile memory 20 FSK modulator 33 FSK demodulator 34 Code extractor 35 DIP switch section 36 Comparator 38 Vibrator motor 40 Light emitting diode 100 Simple mobile phone 200 Incoming call notification device

Claims (7)

[Claims] 1. An incoming call detecting means for detecting an incoming call, a memory means for storing a predetermined code in advance, and a memory reading control for reading the predetermined code from the memory means when the incoming call is detected by the incoming call detecting means. Means, signal processing means for modulating a carrier wave having a relatively low frequency according to the predetermined code read from the memory means to form a transmission signal, and transmitting the transmission signal formed by the signal processing means And a wireless transmission unit for performing the communication. 2. The communication device according to claim 1, wherein the carrier wave is a signal of several MHz band. 3. The communication device according to claim 1, wherein the modulation is digital frequency modulation. 4. A radio receiving means for receiving a signal signal formed by modulating a carrier wave of a relatively low frequency according to a predetermined code, and a signal processing means for demodulating the signal received by the radio receiving means. A code extracting means for extracting the predetermined code from a signal obtained by demodulation by the signal processing means, and determining whether or not the predetermined code extracted by the code extracting means matches an internally set code. An incoming call notification device comprising: a code comparison means; and a notification drive means for driving the incoming call notification means when the code comparison means determines that they match. 5. The incoming call notification device according to claim 4, wherein the internal setting code is set by a DIP switch. 6. The incoming call notification device according to claim 4, wherein the incoming call notification means is a vibration generating means. 7. The incoming call notification means is an incoming call display means having a light emitting element.
The incoming call notification device according to.