JP2530328B2 - Mobile message communication system - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a portable message communication system capable of communicating with a person who is out or is absent.

(Prior Art) Heretofore, as a typical method for communicating with a person who is away from a communication device such as a telephone by going out or away from the desk by using a public telecommunication network, there is the following.

(A) Radio call by pager, (b) New pager with display function added to pager, and simple message can be transmitted (Plan of Hattori Seiko Co., Ltd. (for example, 1986, September 18, Asahi Shimbun)) USA Example of implementation in etc. (Millicom, etc.), etc.) a) Portable mobile terminal communication that sends and receives information such as news and memos between a mobile device and a fixed device via a data exchange in a specific campus. System (Communication method study group CS 84
-101), b) A data transceiver (for example, Electronics 1983, which transmits and receives data between a portable device and a computer.
8,25), telephone calls using cordless phones, telephone calls to mobile bodies such as cars, trains, and ships.

(Problems to be Solved by the Invention) However, these communication methods have the following problems. Since and use memos and data as information, they are limited in terms of freedom of communication and ease of input / output, and cannot directly communicate with existing analog telephones, which account for the majority.

Since and use conversation voice as information, a) two people (both in conversation) will occupy a mysterious wireless channel for the duration of the call, and thus will be congested with other portable devices ( (Waiting for incoming / outgoing calls) and limiting the number of installations.

(B) In addition, since the talk time is generally long, or long calls are possible, (1) the power supply unit is large, and (2) there is also movement during a call, fading measures are essential, and c) Since two-way simultaneous communication is required, it is necessary to use different frequencies for upstream and downstream to avoid the combination of transmission and reception, which makes the portable device large and inconvenient to carry at all times. There is.

The purpose of the present invention is to eliminate these problems and to enable two-way communication with the majority of existing analog telephones,
Another object of the present invention is to provide a mobile message communication system that secures the degree of freedom of communication and is easy to introduce by simplifying the system configuration.

(Means for Solving Problems) In order to achieve the above object, the present invention uses a non-conversational message voice as information for a short time to make it considered that there is no movement during communication, and connects to a communication network. The fixed terminal includes a fixed terminal system including a wireless transmission unit, the message voice compression / processing unit, and a radio wave emission timing control unit, a wireless reception unit, and the message voice decompression / decompression unit. In a mobile message communication system using a system and a mobile terminal capable of wirelessly receiving a message voice, when a message voice is transmitted from a plurality of fixed terminals to the mobile terminal, the radio wave emission timing control means allows the fixed terminals to communicate with each other. Portable message communication system in which the timings are shifted so as not to overlap the radio wave emission, and the gap between them is set longer than the transmission time of the message voice (first invention). ) Is proposed.

In addition, non-conversational message voice for a short time that can be regarded as no movement during communication is used as information, connected to a communication network, wireless transmission / reception means, compression / decompression means for the message voice, radio wave emission. The fixed terminal system includes a fixed terminal system including timing control means and means for transmitting a permission signal to a mobile terminal, wireless transmission / reception means, means for restoring / compressing the voice message, and means for transmitting a permission request signal for radio wave transmission. And a mobile terminal capable of wirelessly transmitting and receiving message voice, and in a mobile message communication system that does not have simultaneous communication in both up and down directions, when transmitting message voice from multiple mobile terminals to a fixed terminal, it is fixed. The radio wave is emitted only when the permission signal is received from the terminal, and the transmission timing of the permission signal from the fixed terminal is set after the reception of the permission request signal and the antenna system of the mobile terminal. Suggest mobile message communication method and after switching to the reception operation (second invention).

(Operation) According to the first aspect of the invention, the radio waves of the message voice to the mobile terminal are emitted from the plurality of fixed terminals at the same timing without being emitted at the same time, so that the reception of the message voice in the mobile terminal becomes unstable. In addition, since the gap is longer than the transmission time of the message voice, the transmission from a plurality of fixed terminals to the mobile terminal can be performed at the same frequency, and the effective use of radio waves can be achieved.

According to the second aspect of the invention, when there are a plurality of mobile terminals that are going to transmit the message voice, only the mobile terminal that receives the permission signal for the permission request signal emits an electric wave, so that the plurality of mobile terminals simultaneously emit the radio waves. The reception at the fixed terminal does not become unstable.

(Example) From the viewpoint of advantages in mobile communication, Table 1 is obtained by comparing message voice, conversation voice, and memo information.

That is, compared with conversational voice, message voice requires a shorter communication time for one transmission, immediacy is not necessarily required, and delay is allowed. Therefore, it is possible to process the message voice relatively slowly and slowly before transmitting the message voice wirelessly. Furthermore, since the communication time is short, there is no need to move between fixed stations during communication, and bidirectional simultaneity is not required.

Also, compared with memo information, memos are input by pressing buttons or handwriting and output as letters and numbers to the display unit, while message voice can be input and output by voice, so operation is easy. Since many buttons and indicators are not required, it is possible to make the portable device smaller and more economical, and the biggest difference is that it is possible to communicate directly with the majority of existing telephones by using message voice. .

FIG. 1 shows an example in which the present invention is carried out in the premises of a department store, 11 is a person who has a portable device according to the present invention and can move freely in the department store, and 12 is a person who is carried by a person and a simple fixed station. This is a portable device that wirelessly transmits and receives a message voice between and, and details will be described with reference to FIG. Reference numeral 13 is a simple fixed station that transmits and receives signals to and from the portable device 12 wirelessly, the details of which will be described with reference to FIG. 14
Is a plurality of ordinary existing telephones on the premises, and 15 is a private branch exchange that accommodates the simple fixed station 13, the existing telephone 14, the central control station, and the central processing unit, and makes an exchange connection among them. It has a control function, a memory function, and a timer function to perform. Reference numeral 16 denotes a central control station that performs signal exchange between the simple fixed station 13 and the portable device 12 via the private branch exchange 15, competition control between the simple fixed stations, and connection control between the private branch exchange 15 and the central processing unit. Will be explained with reference to FIG. The 17 compresses, processes, and stores the message voice input from a plurality of existing telephones 14, and conversely expands, restores, and stores the message voice from a plurality of simple fixed stations. This is a center processing unit having a function of sending a torch for operation guidance, the details of which will be described with reference to FIG. Reference numeral 18 is a connection line that connects a plurality of simple fixed stations 13 and a private branch exchange 15 that are connected to each other by a bus, and 19 is an existing telephone line that connects the existing telephone 14 and the private branch exchange 15 by wire. , 110 is a switch for connecting the private branch exchange 15 and the public network, a public network having a large number of general telephones, 111 is a large number of ordinary ordinary telephones in the public network, 112 is a telephone function and a simple fixed station 13 It is a dedicated terminal that also has the function of the center processing unit 17.

FIG. 2 shows an example of the configuration of the portable device 12, in which 21 is an antenna and 22 is an antenna switching unit for commonly using one antenna for transmission and reception, which is normally on the receiving side. 23 is a simple fixed station
The receiving unit that receives the radio waves from the 13, 13 is a demodulation unit that extracts information such as message voice from the radio waves received by the receiving unit 23, 25
Is a frame disassembling unit that decomposes the received information into a telephone number, a message voice, and a control signal, and 26 is a storage and collation of the telephone number,
Signal processing unit for decoding signal information from the central control station, 27
Is a memory for accumulating the message voice from the frame decomposition unit 25, and 28 is a voice decompression / decompression unit for returning the compressed voice message from the memory 27 to a normal voice, the operation of which is shown in FIG. The voice compression / processing unit 54 shown in FIG. 29 is a memory for storing the restored message voice, 210 is a speaker unit including an amplifier for listening to the received message voice, 211 is buttons, 2111 is a dial switch, 2112 is a portable device 12 Input button for activating the circuit block necessary for the operation when the user of the voice message is transmitted, 2113 is a transmission button when transmitting the compressed voice message to the simple fixed station 13 (radiation of radio waves) ,
2114 is a read button to be pressed when listening to the voice message that has arrived, 212 is a signal of the timing of inputting voice to the user of the portable device and (2) the arrival of the voice message,
(3) Indicator for notifying completion of transmission of message voice, 21
Reference numeral 3 is a control unit for controlling the above operation, 214 is a timer for timing instruction of voice input and time measurement in intermittent reception, and 215 is a battery for supplying electric power to each unit. 2
16 is a microphone for inputting the voice message of the carrier, 217 is a microphone 2
The output from 16, that is, the memory that stores the voice message of the carrier as it is, 218 is the memory 2 according to the instruction of the control unit.
A voice compression / processing unit that compresses and processes the voice extracted from 17, 219 is a memory that stores the compressed message voice, and 220 is a message voice and signal processing unit from the memory 219.
A frame assembling unit that assembles a transmission frame for transmitting the telephone number from 26 and a control signal to the simple fixed station and the central control station, and 221 is a modulation unit that puts the output of the frame assembling unit 220 on a wireless carrier. , 222 are the two specified frequencies (f1, f) for the simple fixed station 13 shown in FIG.
This is the transmitter that can obtain the transmission output in 2).

FIG. 3 shows a configuration example of the simple fixed station 13, where 31 is a connecting line 18
32 is a memory for temporarily storing the input signal, 33 is a gate unit for reading the contents of the memory 32 according to an instruction from the control unit, and sending the contents to the modulation unit, 34
Is a modulator for putting the information from the gate unit 33 on the wireless carrier, 35 is a transmitter that emits radio waves at a specified frequency and output to the portable device, 36 is a transmitting antenna, 37 is a timer, 38 is A control unit that controls the above operation. 39 is a receiving antenna, 310 is a receiving unit capable of receiving the frequencies f1 and f2 from the portable device 12, 311 is a radio wave received by the receiving unit 310, and includes a control pattern signal, a message voice, a telephone number, etc. A demodulation unit for extracting information, a memory 312 for temporarily accumulating the output (telephone number and message voice) from the demodulation unit 311, and a gate unit 313 for reading the contents of the memory 312 to an output terminal according to an instruction from the control unit 38. , 314 are output terminals connected to the connection line 18.

In FIG. 4, 41 is an input terminal from the private branch exchange 15, 42 is a switch group for connecting a plurality of inputs and outputs so that they can be processed in parallel in the central control station, and blocks on the right side of 42 are parallel. Although it has a plurality of the same functional blocks so that it can be processed, in FIG. 4, each block is represented by a single block. 43 is a separation unit that separates the telephone number of the portable device input through the private branch exchange 15 and the voice message to the portable device, 44 is a memory that temporarily stores the separated telephone number of the portable device, and 45 is A marking circuit that adds a mark to the message voice so that the correspondence between the message voice and the telephone number can be seen, 46 is an output terminal for sending the output of the marking circuit 45 to the center processing unit 17, and 47 is a compression process by the center processing unit 17. Input terminal for inputting audio, 48 is a memory for temporarily storing the audio input from input terminal 47, 49
Is a collating unit that collates the contents of the memory 44 with the contents of the memory 48 and combines the paired ones; 410 is for controlling the telephone number of the portable unit, the voice message to the portable unit, and the simple fixed station 13. A frame assembling unit for assembling a transmission frame in order to transmit the control signal of
Is a memory for temporarily storing the latest output of the frame assembling unit 410, 412 is an output terminal for sending the output of the frame assembling unit 410 or the contents of the memory 411 to the private branch exchange 15, 413
Is a control unit for controlling the above operation, and 414 is a timer. 415 is an input terminal, 416 is a memory for temporarily storing the message voice from the simple fixed station, 417 is a separation unit for separating the output of the memory 416 into a telephone number and a message voice, and 418 is the separated telephone number. A memory for temporarily storing 419 is a marking circuit for adding a mark so that the correspondence with the telephone number can be recognized prior to sending the message voice to the central processing unit.
0 is an output terminal to the central processing unit 17, 421 is an input terminal from the central processing unit 17, 422 is a memory for temporarily storing the message voice from the central processing unit, 423 is a telephone number of the memory 418 and a memory 422 of the memory 422. A collating unit 424 for collating with the message voice is an output terminal for collating and transmitting the paired telephone number and the message voice to the private branch exchange 15.

Further, in FIG. 5, 51 is an input terminal to which the message voice from the output terminal 46 of the central control station shown in FIG. 4 is input,
52 is a switch group for connecting a plurality of inputs so that they can be processed in parallel, and has a capacity for parallel processing in FIG. 5 as in FIG. 4, but blocks on the right side of the switch group 52 are Blocks are also represented by a single block.

Reference numeral 53 is a memory for temporarily storing the input voice message for compression processing, 54 is a voice compression processing unit for compressing the voice extracted from the memory 53 according to an instruction from the control unit, and 55 is a compression unit. A memory for storing the processed message voice, 56 is an output terminal for sending the output from the memory 55 to the input terminal 47 of the central control station shown in FIG. 4,
Reference numeral 57 is a talkie unit for guiding the timing of occurrence when a user of the existing telephone set 14 inputs a message voice to the portable unit, and 58 is an output of the talkie unit 57 for a private branch exchange.
An output terminal 59 for outputting to 15 is a control unit for controlling the operation of each of the above units. 510 is an input terminal for inputting compressed voice messages from multiple portable devices, 511 is an input terminal 510
The memory for temporarily storing the voice message from, 512 is a voice decompression / restoration unit for decompressing / restoring the voice extracted from the memory 511 according to an instruction of the control unit and returning it to the original message voice, 513 is A memory for temporarily storing the message voice from the voice expanding / restoring unit 512, and 514 is an output terminal for returning the message voice from the memory 513 to the central control station.

The operation of the present invention configured as described above is as follows.

A. When you send a message voice from an existing phone to a mobile device (downward), follow the procedure for actual use.

A) In Figure 1, the clerk A in the office on the premises is
In order to use the telephone 14 to contact B who has the portable device 12 and is moving on the premises, the telephone number unique to the portable device that B possesses is dialed.

(B) Since the private branch exchange 15 knows that the incoming call is from the telephone number to the portable unit, it accesses the center processing unit 17 and sends the talkie to the telephone set 14.

C) The clerk A uses the telephone 14 to inject the message voice for 10 seconds (one example) according to the guidance of Talkie.

D) The voice message is sent via the private branch exchange 15 and the central control station 16.
The center processing unit 17 performs compression processing.

E) The message voice sent to the central processing unit 17 via the central control station 16 is stored in the memory 53 through the input terminal 51 shown in FIG. Next, under the control of the control unit 59, the data is sent from the memory 53 to the voice compression processing unit 54 and compressed.

There are various methods for voice compression processing, but the following can be realized relatively easily.

Method for shortening time 1) Silent part cutting method for detecting and removing silent parts from message speech 2) Sampling method for sampling message speech at high speed and thinning out at regular intervals Method for compressing band 1) Bandwidth compression by high-efficiency coding Method of making time axis variable 1) Packetizing voice, transmitting packetized voice while observing the congestion of the transmission path in the middle, and assembling and joining packets in order on the receiving side There is a combination of the above methods.

Here, in the following description, a case where compression processing is performed by a method combining -1) and -2) will be described as an example.

F) The voice message that had been input for 10 seconds was input to the voice compression processing unit.
By being processed by 54, it is shortened to, for example, 6 seconds and stored in the memory 55.

G) The control unit 59 successively takes out the message voices stored in the memory 55 and sends them to the central control station 16 via the output terminal 56.

H) The voice message sent to the central control station 16 is stored in the memory 48 via the input terminal 47 and the switch group 42 shown in FIG.

(B) The control unit 43 takes out the stored contents from the memory 44 and the memory 48, collates them by the collation unit 49, combines the paired components, and sends them to the frame assembly unit 410. If there are multiple contents in memory 44 and memory 48,
The control unit 413 operates to sequentially perform collation and sequentially send the paired ones to the frame assembling unit 410.

N) The frame assembling unit 410 assembles the transmission frame and outputs the message voice, telephone number and control signal at the output terminal.
It is sent to the simple fixed station 13 through 412, the private branch exchange 15, and the connection line 18. The simple fixed station 13 is bus-connected to the connection line 18 in units of several units, and this is installed on each floor in the department store.However, in downlink information transmission, it is unknown where the target mobile device is, so the above The output of the frame assembly unit 410 is
It is sent to all connection lines and simple fixed stations via the output terminal 412. However, at this time, the private branch exchange 15 sends the signal to the connection line 18 for each connection line in order to prevent the radio waves from being emitted from a plurality of simple fixed stations at the same time and the reception at the portable device becomes unstable. It is designed to transmit by shifting by T1.

Via the connection line 18 and the input terminal of the simple fixed station 13 shown in FIG.
The information of the message voice communication reaching 31 is temporarily stored in the memory 32. The gate unit 33 changes the contents of the memory 32 to the modulation unit 34.
The timing of sending to is set by the timer 37 to be randomly shifted for each simple fixed station. Therefore, the timing of radio wave emission from multiple simple fixed stations is
Under the control of the private branch exchange 15 between buses, it shifts by T1 and between the same buses by timer 37, random (T2, T3 ,.
-Tn) and the interval is longer than the time of one compressed message voice, in this case 6 seconds (T1, T2, ... Tn
> 6 seconds), the portable device receives radio waves of the same frequency from two or more places at the same time, the reception does not become unstable, and there is a time lag.
One frequency (f0) can cover the downstream direction. By shifting in time, a delay occurs, but the message voice does not require immediacy, so there is no problem. In addition, since the portable unit reduces battery consumption, the receiving section operates intermittently, so the radio waves radiated during the rest period cannot be received, so the output from the simple fixed station will be It is read out from the memory 32 again after a short time from the reception cycle), and the above operation is repeated.

E) The radio waves radiated from the antenna 36 of the simple fixed station 13 are
Reach portable device 12.

W) Information that has reached the portable device 12 passes through the antenna 21, the antenna switching unit 22, the receiving unit 23, the demodulating unit 24, and the frame disassembling unit 25.
To reach. When the control signal separated by the frame disassembling unit 25 reaches the signal processing unit 26, the control unit 213 sets the portable device to the continuous reception state. In addition, the signal processing unit 26 checks whether or not the telephone number separated by the frame disassembling unit 25 matches the unique telephone number assigned to each portable device. If they do not match, the information is discarded here and the portable device 12 is again in a pause state. If they match,
The voice message is stored in the memory 29 through the memory 27 and the voice expansion / restoration unit 28.

When the message voice is stored in the memory 29, the control unit 213
Displays a mark on display 212 indicating that the message voice has arrived. Here, the user reads the read button 211.
When 4 is pressed, the message voice is read from the memory 29 and can be heard from the speaker unit 210 under the control of the control unit 213. When accumulation of message voice in memory 29 is completed,
The portable device is again in the receiving state for a while.

In the above description, other examples include the following.

In the explanation a), as a method of calling the portable device, a method of dialing a telephone number unique to the portable device has been described. However, in the private branch exchange 15, the calling number of the portable device is set to be the same as the existing telephone number, When there is an incoming call, you can also call the portable device by making an incoming call to both the existing phone and the portable device at the same time or calling the existing phone n times and automatically transferring to the portable device when there is no response. Easy to implement.

As another method of compressing and processing the voice in (e), the voice is decomposed into phoneme parameters that represent the meaning of the sound,
There is also a method of wirelessly transmitting only the phoneme parameter and reproducing it into voice on the receiving side, or a method of recognizing and understanding the meaning of the message voice and compressing it to the minimum necessary content and wirelessly transmitting it. Once the compression processing technology is established, it can be applied to the present invention.

Also, the compression rate is not limited to the description above), in short, as long as the wireless communication time is shorter than the voice reproduction, the compression rate is high and the wireless communication time is longer than the voice reproduction time. The shorter the length, the greater the effect of the present invention.

In the explanation w), as a method of notifying the user that the message voice has arrived, it is of course possible to notify it by sound in addition to the display of the mark, and the message voice can also be heard by earphones in addition to the speaker. It is easily feasible.

B. When sending a message voice from a portable device to an existing telephone (upward direction) Follow the same procedure as in actual use.

B) In Figure 1, B carrying the portable device 12 and on the premises
Inputs a telephone number and a message voice of the existing telephone A used by A using a portable device to contact A in the office.

B) B dials A's telephone number using dial switch 2111. The telephone number is temporarily stored in the signal processing unit 26. Next, when B presses the input button 2112, a signal is displayed on the display unit 212 to inform the user of the timing at which the message voice may be input. Therefore, B follows the microphone 216 for 10 seconds (one example) of the message. Input the voice.

C) The output from the microphone 216 is temporarily stored in the memory 217, and then the audio compression / processing unit 218 is controlled by the control unit 213.
And is compressed there. The compression method is the same as the explanation e) of the operation A in the downstream direction. The compressed voice is stored in the memory 219.

D) When the compression processing is completed, the control unit 213 displays a signal indicating that transmission is possible on the display unit 212. Usually, audio compression
Since the processing can be completed in a few seconds or less at the longest, this signal can be omitted.

E) Next, when B presses the send button 2113, the telephone number and the message voice are transmitted as radio waves to the simple fixed station.
At this time, if the radio waves of a plurality of portable devices are simultaneously transmitted to the simple fixed station, the reception of the simple fixed station becomes unstable, and thus competition control is required. That is, the control unit 213 takes out the control pattern signal unique to this portable device, which is registered in the signal processing unit 26, and extracts it from the frame assembly unit 220,
After passing through the modulation unit 221, the transmission unit 222, and the antenna switching unit 22, from the antenna 21, a simple fixed station at the frequency f1 dedicated to the control pattern.
Radio waves are emitted to 13. Since the control pattern signal is short, this signal ends in a short time.

F) The control pattern separated by the demodulation unit 311 is sent to the control unit 38. When the control unit 38 receives a control pattern,
It is checked whether the information from the memory 32 is being transmitted, and if it is being transmitted, wait until this is completed, and when the transmission is completed, the control pattern signal is transmitted to the above-mentioned downlink message voice transmission. Similarly, it transmits to the portable device 12 from the antenna 36. At this time, the control unit 38 controls the timing of emission of the radio wave from the simple fixed station 13 to be later than the switchback timing of the antenna switching unit of the portable device 12.

G) In the portable device 12, the control pattern, which is performed in the same manner as the reception of the voice message in the operation explanation A in the downlink direction, and the control pattern separated by the frame disassembling unit 25 is explained in the signal processing unit 26 by the operation B). A check is made to see if it is the same as the pattern shown in.

When they match, the control unit 213 of the portable device knows that its own transmission is permitted, and therefore performs the following operation.

H) The control unit 213 uses the telephone number of the signal processing unit 26 and the memory 219.
Frame assembly with voice message of 220, modulator 221, transmitter 22
It sends to the antenna switching unit 22 through 2. Antenna switching unit 22
Operates to switch the antenna 21 to the transmission unit 222 side because the transmission button 2113 is pressed, so that these pieces of information are transmitted to the simple fixed station 13 by radio waves at the frequency f2 for transmitting the voice message and the telephone number. To be

(B) If they do not match, the control unit 213 knows that the transmission permission has not been obtained, and therefore the telephone number and the message voice are not transmitted. In addition, another portable device (latest portable device) may be used until the portable device (first-in-law portable device) that has first sent back its control pattern finishes transmitting the message voice.
Sends the control pattern, the control unit 38 of the simple fixed station transmits the previous control pattern (the pattern of the starting mobile device) to this mobile device as well, so that the subsequent mobile device Then the patterns will not match.

In this case, a control method may be used in which nothing is returned to the subsequent portable device, the portable device side monitors for a certain period of time, and if there is no reply, no permission is given.

Also, regarding re-sending when permission is not obtained,
Since the user of the portable device does not have the signal of the transmission end mark, the method of pressing the transmission button 2113 again, the simple fixed station
In 13, a method of accumulating a plurality of control patterns in the order of arrival and automatically sending back replies to those in turn may be adopted.

The information arriving at the simple fixed station is taken out by the demodulation unit 311 as a telephone number and a message voice. In this case, since the control pattern is not included, the control unit 38 does not perform the bypass operation to the transmission unit described in the explanation of operation B), and the telephone number and the voice message are immediately stored in the memory 312, the gate unit. 313
To the output terminal 314.

Information from the output terminal 314, connection line 18, private branch exchange 15
Through to the central control station 16. Here, since there are a plurality of simple fixed stations 13, contention control (wired section in this case) is also required for signal transmission to the central control station. There are several methods, for example, a method for generating a control pattern in a simple fixed station as described above, and if the central control station has a loopback function, it is determined that the license is granted when the own pattern returns. Can be applied, but the description thereof will be omitted.

E) The message voice or the like sent to the central control station is input from the input terminal 415 in FIG.

W) From the output terminal 420 of the central control station, the central processing unit 17
The voice message sent to is input from the input terminal 510 shown in FIG.

The extension / restoration of the message voice in the center processing unit 17 is the same as the operation explanation A in the downlink direction in the portable device 12.

F) The telephone number and the message voice that have passed through the output terminal 424 of the central control station are sent to the private branch exchange 15, and the private branch exchange makes an incoming call to the telephone 14 of the telephone number. In response to this, the private branch exchange 15 first flows a guidance talkie from the talkie unit 57 of the center processing unit,
Control to play message voice. As a result, the message voice is transmitted to the clerk A through the telephone set 14.

As described above, the message voice is transmitted from both the up and down directions.

In the above description, other examples include the following.

Although the department store has been explained as an example, the size of the premises is not limited, and if the premises is large, the radio output is increased, or the number of simple fixed stations is increased, and if the premises is small, the opposite is done. The present invention can be implemented according to the system to be constructed. Further, at this time, the transmitting unit, the receiving unit, the antenna, and the like may be constructed using the technology of the existing wireless device.

In the description of the embodiment, two messages, that is, a voice message from the existing telephone to the portable device (downward direction) and the opposite (upward direction) have been described, but a message from the portable device to the portable device is also realized in the same manner. I can.

Although the existing telephones on the same premises have been described as examples of the telephones for communication, it is needless to say that the telephones for communication can be similarly communicated with general telephones in the public network.

Although the explanation has been given by taking the premises as an example of the range in which communication is possible, as shown by 112 in FIG. 1, if a dedicated terminal having the functions of the telephone, the simple fixed station, and the central processing unit is produced,
The present invention can be implemented in a public network as long as the radio wave of the dedicated terminal 112 can reach. At this time, the functions of the dedicated terminal 112, which correspond to the simple fixed station and the center processing unit, do not require the capacity for parallel processing, and therefore the dedicated terminal can be economically realized.

In this embodiment, the case where the message voice can be transmitted and received bidirectionally has been shown, but it is needless to say that it can be realized even in the case of only the downward direction (phone → portable device).

(Effects of the Invention) As described above, the first and second inventions of the present application focus on a medium that requires a short communication time, that is, a "voice message" for a limited wireless channel, and the The common usage is increased by adding compression / processing technology and control technology that effectively utilizes the effect of compression.
A person occupies 2 channels (1 channel each for upstream and downstream) for 10 minutes, but in the present invention, if it is possible to compress the voice to 60% with a message voice of 10 seconds once, it is commonly used by 200 people. can do. As a result, congestion, which has been the biggest bottleneck in wireless communication until now, or the limitation on the number of portable devices installed can be greatly eased. Although there is a difference in communication time of 10 minutes and 10 seconds, it is possible to convey the minimum necessary intention even for 10 seconds while moving, and a very small number of people can communicate more than necessary and sufficient. It is more meaningful for a large number of people to communicate as much as necessary than to do it.

Also, since the communication time is short, it can be used repeatedly for a short time, the battery consumption can be reduced and the power supply can be made small, and since it can be considered that there is no movement during communication, minor fading measures can be used, Furthermore, according to the first invention, there is no simultaneous communication from the plurality of fixed terminals to the mobile terminal, and according to the second invention, there is no simultaneous communication from the plurality of mobile terminals to the fixed terminal. It is possible to effectively use radio waves without unstable reception at fixed terminals, which simplifies and economically implements portable devices and systems, and constructs a system that is easy to introduce. .

Further, compared to the communication using memos, the degree of freedom of communication of the intention is high, input / output is easy, and it is possible to directly communicate with the existing general telephones which occupy the majority.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention in a department store premises, FIG. 2 is a configuration diagram of a portable device, FIG. 3 is a configuration diagram of a simple fixed station, and FIG. 4 is a configuration diagram of a central control station. 5 is a block diagram of the center processing unit. 11 …… Person moving in department store, 12 …… Portable device, 13…
… Simple fixed station, 14 …… Existing telephone on premises, 15 …… Private branch exchange, 16 …… Central control station, 17 …… Center processing unit,
18 …… Connection line, 19 …… Existing telephone line, 110 …… Public network, 1
11 …… General telephone, 112 …… Dedicated terminal, 21 …… Antenna, 22 …… Antenna switching section, 23 …… Reception section, 24 …… Demodulation section, 25 …… Frame decomposition section, 26 …… Signal processing section, 27 ……
Memory, 28 …… Voice expansion / restoration unit, 29 …… Memory, 21
0 …… Speaker section, 211 …… Buttons, 2111 …… Dial switch, 2112 …… Input button, 2113 …… Send button, 2114 …… Read out button, 212 …… Display unit, 213 ……
Control unit, 214 ... Timer, 215 ... Battery, 216 ... Microphone, 217 ... Memory, 218 ... Voice compression / processing unit,
219 ... Memory, 220 ... Frame assembly section, 221 ... Modulation section, 222 ... Transmission section, 31 ... Input terminal, 32 ... Memory, 3
3 …… Gate, 34 …… Modulator, 35 …… Transmitter, 36 ……
Antenna, 37 ... Timer, 38 ... Control section, 39 ... Antenna, 310 ... Reception section, 311 ... Demodulation section, 312 ... Memory, 3
13 ... Gate part, 314 ... Output terminal, 41 ... Input terminal, 42 ... Switch group, 43 ... Separation part, 44 ... Memory, 45 ... Marking circuit, 46 ... Output terminal, 47 ...... Input terminal, 48 …… Memory, 49 …… Comparison section, 410 …… Frame assembly section, 411 …… Memory, 412 …… Output terminal, 413 ……
Control unit, 414 ... timer, 415 ... input terminal, 416 ... memory, 417 ... separation unit, 418 ... memory, 419 ... marking circuit, 420 ... output terminal, 421 ... input terminal, 422 ...
... Memory, 423 ... Verification unit, 424 ... Output terminal, 51 ... Input terminal, 52 ... Switch group, 53 ... Memory, 54 ... Voice compression / processing unit, 55 ... Memory, 56 ... … Output terminals,
57 …… talker section, 58 …… output terminal, 59 …… control section, 510
…… Input terminal, 511 …… Memory, 512 …… Voice expansion / restoration unit, 513 …… Memory, 514 …… Output terminal.

 ─────────────────────────────────────────────────── --- Continuation of the front page (56) Reference JP-A-55-132136 (JP, A) JP-A-55-114046 (JP, A) JP-A-56-152344 (JP, A) JP-A-49- 131304 (JP, A)

Claims (2)

(57) [Claims] 1. A non-conversational message voice for a short time that can be regarded as no movement during communication is used as information, is connected to a communication network, and is wirelessly transmitting means, said message voice compression / processing means. A fixed terminal system provided with radio wave emission timing control means, a wireless reception means, and a mobile terminal capable of receiving message voice wirelessly with the fixed terminal system, provided with the message voice expansion / restoration means. In the mobile message communication system using, when transmitting a message voice from a plurality of fixed terminals to the mobile terminal, the front wave emission timing control means shifts the timing so that the radio waves emitted from the fixed terminals do not overlap, The mobile message communication system is characterized in that the interval is set to be longer than the transmission time of the message voice. 2. A non-conversational message voice for a short time that can be regarded as no movement during communication is used as information, is connected to a communication network, is a wireless transmitting / receiving means, and compresses the message voice.
A fixed terminal system provided with a restoring means, a radio wave emission timing control means, a permission signal transmitting means to a mobile terminal, a wireless transmitting / receiving means, a restoring / compressing means for the voice message, and a transmitting means for transmitting a permission request signal for radio wave transmission. In the mobile message communication system, which comprises the fixed terminal system and a mobile terminal capable of wirelessly transmitting and receiving a message voice, and in which there is no simultaneous communication in both up and down directions, a message voice is transmitted from a plurality of mobile terminals to a fixed terminal. When transmitting the license signal from the fixed terminal, the radio wave is emitted only when the license signal is received from the fixed terminal, and the transmission timing of the license signal from the fixed terminal is set after the license request signal is received and the antenna system of the mobile terminal is received. The mobile message communication method is characterized in that it is after switching to.