JPH0951568A - Paging system capable of paging by cordless telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the portability and page a nearby person free of charge by providing a radio selective call receiver which can directly be paged from a cordless telephone set and the cordless telephone set which sends signals to the receiver. SOLUTION: A cordless telephone set master equipment 1 has an ordinary general telephone line calling function and a slave equipment/master equipment calling function for a cordless telephone set slave equipment. Cordless telephone set slave equipments 2a and 2b have a general telephone line caging function through the master equipment, a slave equipment/master equipment calling function, and an inter-slave-equipment calling function. Further, pagers (radio selective call receiver) 3a-3c can be paged through a general pay telephone line. When the pagers 3a-3c are paged from the master equipment 1, slave equipment 2a, and slave equipment 2b, selective call numbers for the general telephone line are discriminated by using radio signals transmitted from a paging system base station 5 through the general telephone line and tone-only signals or signals with messages are received.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio selective call receiver and a cordless telephone system, and more particularly, to a radio selective call receiver for general public telephone lines, which can be called from a cordless telephone without using a public telephone line. The present invention relates to a receiver and a cordless telephone system.

[0002]

2. Description of the Related Art Recently, mobile communication has become popular, and various means for calling a moving person are provided. For example, a radio selective call receiver can call a carrier through a general public telephone line, and a cordless telephone system is composed of a parent telephone and one or more child telephones, and a parent telephone can call a child telephone or a child telephone. You can call other slave phones from your phone.

[0003]

By the way, since the radio selective calling receiver must call through the general public telephone line network in order to call the carrier, even if the person who wants to call is nearby. Each time you call, you will be charged for the telephone call.

Therefore, if the person who wants to call the cordless telephone system child phone is always carried, it is possible to call the person without paying a telephone charge as long as the person can reach the radio wave of the cordless telephone system. This time, the handset has a large size and weighs several hundred grams as compared with the radio selective call receiver, and it is difficult to carry it at all times.

The present invention has been made in view of the above points, and an object thereof is to provide a paging system that is small and lightweight, has good portability, and does not require telephone charges when calling a person nearby. And

[0006]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and can call directly from a cordless telephone master unit or a cordless handset using a frequency band for a paging terminal without using a telephone line. Wireless selective call receiver,
Cordless telephone capable of transmitting to the receiver. According to the present invention, by transmitting the cordless selective call number of each wireless selective call receiver in accordance with the signal format, the selective call is made from the cordless master unit or the slave unit in the same manner as the ordinary wireless selective call receiver is called. Can receive number and message signals.

According to the present invention, it is possible to call a radio selective call receiver in the vicinity of each room or house within a range of several hundred meters from a cordless master telephone or a slave telephone without using a general public telephone line. Therefore, by always carrying a lightweight wireless selective call receiver, it is possible to make a call outdoors as usual, and when the user is in the vicinity of each house, it is possible to make a call any time without calling charges associated with the call.

[0008]

Next, an embodiment of the present invention will be described.

FIG. 1 shows an example of a configuration diagram of a general cordless telephone and a paging terminal.

Reference numeral 1 denotes a cordless telephone base unit, which has a normal ordinary telephone line communication function and a cordless telephone communication function between the cordless telephone base unit and the cordless telephone base unit. Reference numerals 2a and 2b denote cordless telephone slave units, which have a general telephone line communication function via the master unit, a slave unit master-sector call function, and a slave unit-speech call function. Pagers (radio selective call receivers) 3a to 3c are capable of making a call through a general public telephone line.
Reference numeral 4 indicates a house.

In this configuration, in order to call the pagers 3a to 3c from the master unit 1, the slave unit 2a, and the slave unit 2b, a general telephone line is transmitted by a radio signal transmitted from the paging system base station 5 via an ordinary telephone line. A selective call number for receiving a tone-only signal or a signal with a message.

FIG. 2 shows an example of a block diagram of the present invention.

In this configuration, when calling the pagers 3a to 3c around the house 4, a transmission function suitable for each paging terminal can be used to transmit a selective call number for a cordless telephone at a frequency suitable for the receiver. Is incorporated in the master unit 1, the slave unit 2a, and the slave unit 2b, thereby transmitting the selective call number registered in the pagers 3a to 3c and an arbitrary message signal (not necessary in the case of tone only). As a result, the pagers 3a to 3c around the house 4 can be called without using the general public telephone line.

FIG. 3 shows an example of an internal block diagram of the base unit of the cordless telephone of the present invention.

The base unit 100 is a cordless that modulates / demodulates a radio signal transmitted / received between the cordless handset unit 200 and an antenna 101 for transmitting / receiving a radio signal to / from the cordless handset unit 200 shown in FIG. The telephone wireless unit 111, the antenna 102 that transmits a selective call signal to the pager 300 shown in FIG.
0, a pager signal transmission unit 103 that modulates a selective calling signal, a control unit 104 that controls pager calling processing, and an LCD that controls display on the LCD 106.
A driver 105, an LCD 106 that displays various information such as a telephone number, a memory 107 that temporarily stores a selective call signal to be transmitted, and a cordless code that stores a selective call number used when the pager 300 is called from the master unit 100. ID-ROM 108, a voice input / output driver 109 for controlling the speaker 110 and the microphone 111,
A speaker 110 provided in the earpiece of the base unit 100 for a call, a microphone 111 provided in the mouthpiece of the base unit 100 for a call, and a public for connecting the base unit 100 to a public telephone line. Line connection interface unit 113
And a pager call switch 114 that is pressed when the user calls the pager 300 from the base unit 100.

FIG. 4 shows an example of an internal block diagram of the cordless telephone handset of the present invention.

The cordless handset master unit 10 is the cordless handset 200.
Antenna 201 for transmitting and receiving radio signals to and from 0
5, a cordless telephone radio unit 212 that modulates and demodulates a radio signal transmitted and received to and from the cordless telephone base unit 100, an antenna 202 that later transmits a selective call signal to the pager 300 shown in FIG. Pager signal transmitter 203 for modulating the selective call signal to be transmitted
And a control unit 204 for controlling pager call processing,
LCD driver 205 that controls display on LCD 206
And an LCD 206 displaying various information such as a telephone number
And a memory 20 for temporarily storing a selective call signal to be transmitted
7 and a cordless ID-RO storing a selective calling number used when calling the pager 300 from the slave unit 200.
M208, speaker 210 and microphone 211
A voice input / output driver 209 for controlling the communication, a speaker 210 provided in the earpiece of the handset 200 for a call, a microphone 211 provided in the mouthpiece of the handset 200, and a user The pager call switch 213 is pressed when the pager 300 is called from the child device 200.

FIG. 5 shows an example of an internal block diagram of the pager of the present invention.

The pager 300 includes an antenna device 301 for receiving both a selective call signal from a general public telephone line and a selective call signal from a cordless telephone (main unit 100 and slave unit 200), and a signal received by the antenna unit 301. To the LCD 306, a wireless unit 302 for demodulating the signal, a decoder unit 303 for digitizing and outputting a signal from the wireless unit 302, a control unit 304 for determining a selective call number included in the signal from the decoder unit 303, and an LCD 306. An LCD driver 305 for controlling display, an LCD 306 for displaying a message included in a signal from the decoder unit 303,
A public line ID-ROM 307 that stores a selective call signal of its own device when called from a general public telephone line, and a cordless that stores a selective call signal of its own device when called from the master unit 100 and the slave unit 200. ID-ROM 308
And a memory 309 that temporarily stores signals and the like from the decoder unit 303.

FIG. 6 is a diagram showing an example of the format of the selective call signal from the general public telephone line, and FIG. 7 is a diagram showing an example of the format of the selective call signal from the cordless telephone.

As can be seen with reference to FIGS. 6 and 7,
The selective call signal is composed of a plurality of frames following the synchronization signal, and each frame is for checking the address number which is the selective call number of the pager 300, the message signal which is a message from the calling user, and the transmission error and the like. Check code and.

Next, the operation when the pager is called from the cordless telephone and when the pager 300 is called from the general public telephone line will be described.

FIG. 8 shows a cordless telephone base unit 100 shown in FIG. 3 and a cordless telephone handset 20 shown in FIG.
6 is a flowchart of a selective call signal transmission process in 0.

The transmission process of the selective call signal in the master unit 100 and the transmission process of the selective call signal in the slave unit 200 are the same, so here, with reference to FIG.
The transmission processing of the selective call signal in 0 will be described.

First, after the user of the base unit 100 presses the pager call switch 114 (D-1), the pager to be called is selected by the input operation unit (not shown) (D-).
2).

In the control section 104, the selective call number corresponding to the pager selected in step (D-2) is read from the cordless ID-ROM 108 (D-3), and the address portion of the format shown in FIG. 7 is generated. Yes (D-
4).

The user of the base unit 100 can display a desired message on the pager when calling the pager 300, but when the user inputs this message (D-5, D-6), The control unit 104 generates a message part having the format shown in FIG. 7 (D-7). Then, base unit 100 sends the selective call signal thus created to pager signal transmitting section 103 and antenna 102.
Wirelessly via.

FIG. 9 is a flow chart of a selective call signal transmission process when a general public telephone line is used.

In this case, the system is the same as that of the conventional system shown in FIG. The paging system base station 5 shown in FIG. 1 wirelessly transmits a selective call signal including a selective call number corresponding to a pager desired to call (E-1).

FIG. 10 is a flow chart of a selective call signal reception process in the pager 300 shown in FIG.

The pager 300, which has received the selective call signal including the selective call number given to itself, receives the antenna device 3 from the pager 300.
Selective call number included in the signal received at 01, public line ID-ROM 307 and cordless ID-RO
By comparing with the selective call number read from M308, it is determined whether the selective call number included in the signal received by the antenna device 301 is that of a general public telephone line or that of a cordless telephone (F -1), if it is for a public telephone line, a message for a general public telephone line (for example, a message indicating that a call was made via the general public telephone line) is displayed on the LCD 306 (F-2), and if not, a cordless telephone Message (for example, a call from the cordless telephone) is displayed on the LCD 306 (F-3).

Next, it is judged whether the signal received by the antenna device 301 includes a message (F-
4) If there is a message, message signal processing is performed (F-5), the message is displayed (F-6), and the processing ends. If there is no message in the determination of step (F-4), for example, the fact that the message is not included in the selective call signal is displayed (F-6) and the process is displayed.

[0033]

As described above, according to the present invention, a cordless telephone master unit is provided without using a general public telephone line.
Alternatively, wireless selective call receivers in the vicinity of each room and house can be called at any time within a few hundred meters from the slave unit without any call charge. As a result, even if the user is in a room far away from the vicinity of the telephone or is outdoors near the house and cannot hear the ring tone of the telephone directly, the incoming call can be known. Moreover, since it is considerably lighter than the cordless telephone handset, it is easy to carry around and can always be carried, so that the information can be always known.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a conventional system configuration.

FIG. 2 is a diagram showing a system configuration example of the present invention.

FIG. 3 is a diagram showing an example of an internal block diagram of a cordless telephone base unit of the present invention.

FIG. 4 is a diagram showing an example of an internal block diagram of a cordless telephone handset according to the present invention.

FIG. 5 is a diagram showing an example of an internal block diagram of a pager of the present invention.

FIG. 6 is a diagram showing an example of a format of a selective call signal from a general public telephone line.

FIG. 7 is a diagram showing an example of a format of a selective call signal from a cordless telephone.

8 is a cordless telephone base unit shown in FIG. 3 and FIG.
6 is a flowchart of a selective call signal transmission process in the cordless telephone handset shown in FIG.

FIG. 9 is a flowchart of a selective calling signal transmission process when a general public telephone line is used.

10 is a flowchart of a selective call signal reception process in the pager shown in FIG.

[Explanation of symbols]

 1 cordless telephone master unit 2a, 2b cordless telephone slave unit 3a, 3b, 3c pager 4 house 5 paging system base station 100 cordless telephone master unit 200 cordless telephone slave unit 300 pager 101, 102, 201, 202, 301 antenna 103, 203 Pager signal transmission section 104, 204, 304 Control section 105, 205, 305 LCD driver 106, 206, 306 LCD 107, 207, 309 memory 108, 208, 308 Cordless ID-ROM 109, 209 Audio input / output driver 110, 210 Speakers 111, 211 Microphones 112, 212 Cordless telephone radio section 113 Public line connection interface section 114, 213 Pager call switch 302 Radio section 303 Decoder section 307 Public line ID-ROM

Claims (3)

[Claims] 1. A wireless selective call receiver capable of making a direct call from a cordless telephone master unit or a cordless handset using a frequency band for a paging terminal without using a telephone line, and a cordless unit capable of transmitting to the receiver. A paging system capable of calling by a cordless telephone, which has a telephone. 2. Two selective call signals, a selective call number for receiving a signal transmitted from a general public telephone line and a selective call number for receiving a signal transmitted from the cordless telephone master unit or slave unit. The paging system capable of calling with a cordless telephone according to claim 1, which has a radio selective call receiver. 3. A cordless telephone master unit and a slave unit capable of transmitting a selective call number different from the selective call number in the case of transmitting from a general public telephone line to the wireless selective call receiver though the same frequency band. A paging system that can be called by a cordless telephone set according to claim 1.