JP2995636B2 - Method for updating receivable time zone in selective calling device and selective calling system - Google Patents

Abstract

PURPOSE:To allow a caller to easily recognize disable call because the time is at the outside of a receptible time zone of a receiver of a called party by storing correspondingly a calling number of each receiver and a receptible time zone for the calling number to the selective calling equipment with cross reference. CONSTITUTION:A caller enters a calling number of a receiver being a calling object from any of pushbutton telephone sets TL1-TLn. A control section 17 sends a signal Sa to a subscriber registration data storage section 8 to allow the storage section 8 to send a calling number sequentially to a comparator circuit 6, which gives a reception time zone relating to a calling number coincident with the sent call number to a register 10 when the comparator circuit 6 detects the coincidence of the sent call number, compares the reception time zone of the register 10 with a current time of a counter section 15, and when the current time is at the outside of the reception time zone, an announcement signal such as 'the receiver corresponding to the entered calling number is not available of reception at present, The next reception is expected from xx hour to xx hour.' is sent to the caller via an input output circuit section 2 and a public telephone line network 1.

Description

Description: TECHNICAL FIELD The present invention relates to a selective calling device and a method for updating a receivable time zone in a selective calling system.

[Related Art and Problems] A receiver in a selective calling system, for example, a receiver (that is, a pager) in a paging system, requires a carrier to operate a switch for turning off a power supply even after a time period when the receiver is used. In order to avoid wasting power and wasting power, there is a type in which power supply is automatically stopped after a preset time period has elapsed and reception is not performed.

However, in this type of receiver, when the caller does not remember the preset time zone and calls outside the time zone, the caller side is not contacted with the carrier of the receiver. However, there is a problem that various confusions occur without knowing the cause.

[Object of the Invention] The present invention has been made in view of the above-described circumstances,
Because it is out of the receivable time zone of the receiver of the calling party,
It is an object of the present invention to provide a selective calling device and a method of updating a receivable time zone in which a caller can easily recognize when a call cannot be made.

[Summary of the Invention] In the invention relating to the selective calling device of the present invention, the calling number of each receiver and the callable time zone at the calling number are stored in association with each other, and the calling request of any one of the receivers is selected. When the call is sent to the calling device, if the current time is outside the callable time zone corresponding to the call number of the receiver called in the call request, a response to the calling side indicating that the call cannot be made is sent to the calling device. The gist of the present invention is that in the selective calling device, the callable time zone can be updated, and a signal indicating that the callable time zone has been updated is transmitted.

Further, the invention relating to the method of updating the receivable time zone according to the present invention transmits the call number of the receiver and the new receivable time zone after the update to the selective calling apparatus via a telephone line. Update the receivable time zone set in,
Thereafter, a new receivable time zone is sent from the selective calling device to the receiver to which the call number is given, and the already set receivable time zone is updated with the new receivable time zone. The gist is that it was done.

EXAMPLES Hereinafter, each invention of the present application will be specifically described based on examples shown in the drawings.

First Embodiment First, a first embodiment of the present invention will be described.

FIG. 1 is a diagram showing a circuit configuration of the present embodiment. Output circuit section 2 is connected to a number of buttons telephones TL ₁ ~TL _n via the public telephone network 1, either call request receiving and call target receiving going sent during this from button telephone The machine call number, function code, and message
This is a circuit that sends out a response from a response circuit 11, which will be described later, to the button-type telephone that has sent the call request via the public telephone network 1 while sending it to a predetermined circuit unit.

The message register 3 is a register in which a message sent via the input / output circuit unit 2 at the time of a call request is temporarily set. The message register 3 receives a signal from the signal processing unit 18 and processes the set message. It is sent to the unit 18. The function code detecting section 4 detects a function code (end code and correction code) sent through the input / output circuit section 2. When detecting a correction code, the function code detecting section 4 sends a reset signal R to the message register 3. When an end code is detected, the control unit 17
The end report signal EN. The call number register 5
A register in which a call number transmitted first at the time of a call request is set is transmitted to the control unit 17 when the call number has been set, and the set call number is transmitted to the comparison circuit 6 when the call number has been set. I do.

The comparison circuit 6 stores the call number sequentially transmitted from the subscriber registration data storage section 8 and the call number register 5
This is a circuit for comparing the calling numbers from each other and sending a match detection signal to the control unit 17 when both calling numbers match.

The subscriber registration data storage unit 8 associates the call number of the subscriber of the call service contract, the call code obtained by encoding the call number, and the time zone in which the call number can be called, that is, the time zone for receiving the call request. , A circuit that stores a large number of signals, receives signals from the control unit 17, and sends the stored data to various circuit units. The setting unit 9 is an input unit for storing the data in the subscriber registration data storage unit 8. The register 10 is a circuit in which the above-mentioned reception time period sent from the subscriber registration data storage unit 8 is set, and this reception time period is sent to the response circuit 11 and the comparison circuit 12. The response circuit 11 is a circuit that obtains a signal from the control unit 17 or a reception time zone from the register 10 and sends various response messages to the caller via the input / output circuit unit 2 and the public telephone network 1. The comparison circuit 12 is a circuit that takes in the reception time zone from the register 10 and the current time from the timer unit 15 and compares them to check whether the current time is within the reception time zone, and sends a signal indicating the result to the control unit 17. is there.

The oscillating circuit 13 is a circuit section that constantly sends out a signal of a constant frequency, and the frequency dividing circuit 14 divides the above-mentioned signal from the oscillating circuit 13 into various frequency signals, This is a circuit unit that sends the signal to the signal generation unit 16. Clock section
Reference numeral 15 denotes a circuit which counts a signal from the frequency dividing circuit 14 to obtain a current time, and supplies the current time to the comparing circuit 12 as described above. The timing signal generator 16 obtains a signal from the oscillation circuit 13 and a signal from the frequency divider 14, generates various timing signals based on the signals, and sends them to the controller 17 and the signal processor 18. is there.

The control unit 17 is a circuit unit that takes in signals from each circuit unit, sends a signal to each circuit unit based on the signals, and controls them. The signal processing unit 18 is controlled by a signal from the control unit 17 to fetch a call code from the subscriber registration data storage unit 8, and sends a signal to the message register 3 to fetch a message set in the message register 3. ,
This is a circuit that processes both of them by a predetermined method such as the POCSAG method and sends out the signals to the transmitter 19. The transmitter 19 is a circuit for transmitting the transmitted signal as a radio signal from the antenna 20.

Next, the operation of the present embodiment configured as described above will be described.

First, the caller becomes to enter the call number of a receiver and call target from any button telephones TL ₁ ~TL _n, which is a public telephone network 1, output circuit 2 Are set in the call number register 5 via the. When the setting in the call number register 5 is completed, the above-described input completion signal is sent from the call number register 5 to the control unit 17. In response to the input completion signal, the control unit 17 sends a signal Sa to the subscriber registration data storage unit 8 and sequentially compares the stored call numbers (that is, registered call service contracts) with the comparison circuit 6. To be sent. At this time, the comparison circuit 6 takes in the call number set in the call number register 5, that is, the call number sent from the caller side, and sequentially receives the call number from the subscriber registration data storage unit 8. Compare with the incoming call number. If the call number from the call number register 5 does not match any of the call numbers stored in the subscriber registration data storage section 8, the comparison circuit 6 sends a signal indicating this to the control section 17.
To send to. At this time, the control unit 17 receives the above signal,
A predetermined signal corresponding thereto is sent to the response circuit 11, and the response circuit
Numeral 11 indicates the call number sent from the caller side and sends an announcement signal indicating that a call service contract has not been registered to the input / output circuit unit 2 and the public telephone network 1.
To the calling party via.

On the other hand, the comparison circuit 6 performs the comparison operation as described above, and the transmitted call number and the subscriber registration data storage section 8
When the comparison of the calling numbers from the... Is detected, the comparing circuit 6 sends a signal to that effect to the control unit 17. At this time, the control unit 17 receives the above signal, sends a predetermined signal Sb to the subscriber registration data storage unit 8, and sends to the register 10 a reception time zone related to the call number that matches the transmitted call number. At the very least, the register 10 holds this and the response circuit 1
1. Send to comparison circuit 12. The comparison circuit 12 includes the register 10
Of the reception time zone and the current time of the timekeeping unit 15,
It checks whether the current time is within the reception time zone and sends a signal corresponding to the result to the control unit 17. When the current time is outside the reception time zone and a signal to that effect is sent from the comparison circuit 12 to the control unit 17, the control unit 17 sends a predetermined signal corresponding to the signal to the response circuit 11, and the response circuit 11 Obtains the reception time zone from the register 10 and the above-mentioned predetermined signal from the control unit 17, and says, "The receiver of the input calling number does not currently receive. The next reception is from what time to what time Is transmitted to the caller via the input / output circuit unit 2 and the public telephone network 1.

On the other hand, if the current time is within the reception time zone and a signal indicating that is sent from the comparison circuit 12 to the control unit 17, the control unit 17 sends a predetermined signal corresponding to the signal to the response circuit 11,
An announcement signal such as "Please input a message and finally press the button marked with # twice as an end code" is sent to the caller via the input / output circuit unit 2 and the public telephone network 1. Further, the control unit 17 sends a predetermined signal Sc to the subscriber registration data storage unit 8, and sends the call code of the call number related to the call to the signal processing unit 18. When a message or the like is sent from the caller, the message is set in the message register 3, and the end code (that is, ##) sent last is detected by the function code detector 4, Based on this, a predetermined signal EN is sent from the function code detection unit 4 to the control unit 17. At this time, the control unit 17 receives the predetermined signal EN from the function code detection unit 4 and sends a signal G to the signal processing unit 18. The signal processing unit 18 receives the signal G and sends a signal to the message register 3 to take in the set message and the call code sent from the subscriber registration data storage unit 8. Is processed by a predetermined method such as the POCSAG method and transmitted to the transmitter 19. Then, the transmitter 19 transmits the transmitted signal as a wireless signal from the antenna 20.

Second Embodiment Next, a second embodiment of the present invention will be described. 2 and 3 show the circuit configuration of a selective calling device and a receiver in one selective calling system.

First, the circuit configuration of the selective calling device will be described with reference to FIG. As can be seen from FIG. 2, the circuit configuration of the selective calling device is substantially the same as the circuit configuration of the selective calling device of the first embodiment shown in FIG. 1 (FIG. Those having the same reference numerals as those in FIG. 1 are circuits having the same functions as those in FIG. 1). However, unlike the case of the first embodiment, the reset signal R to the message register 3
Are sent not only from the function code detection unit 4 but also from the control unit 17, and these reset signals R are given to the message register 3 via the OR gate 3a. In order to update the reception time zone related to the specific call number stored in the subscriber registration data storage unit 8, a new reception time period is sent via the public telephone network 1 and the input / output circuit unit 2. Is set in the message register 3 once, and then sent to the subscriber registration data storage unit 8 to be used for the update. The subscriber registration data storage unit 8 stores, in addition to the call numbers for which the call service contracts are registered, the call codes associated with the respective call numbers, and the reception time zone, checks when updating the reception time zone. The password to be entered is also stored. Further, the comparison circuit 3b transmits a password set in the message register 3 sent at the time of updating the reception time zone,
This circuit compares a password set in the subscriber registration data storage unit 8 in advance, and sends a signal indicating the result to the control unit 17.

Next, the circuit configuration of the above-described receiver will be described with reference to FIG. The receiving unit 31 is a circuit unit that demodulates the FM signal received by the antenna 30. The pre-stage circuit unit 32 includes an ID-ROM 33 and a decoder unit 34. The ID-ROM 33 stores a call number and the like individually assigned to the receiver, and a decoder unit 34.
Under the control of, the stored calling number and the like are
Circuit. The decoder unit 34 decodes the received signal demodulated by the receiving unit 31 and checks it against the data from the ID-ROM 33, and when it is sent to itself, the coincidence detection signal and the subsequent This is a circuit unit that sends the received message signal to the CPU 36. The decoder unit 34
Also performs control for supplying power to the receiving unit 31 and the switching transistor T _r1 in the ON state for each timing when the paging signal that may be received in the receiver.

The control circuit unit 35 includes a CPU 36, a buffer driver 37, and the like. The CPU 36 is a circuit that controls each circuit unit according to a built-in microprogram. The buffer driver 37
Is a circuit for driving the display 43 while data to be displayed on the display 43 described later is sent from the CPU 36 and set. The reception time zone memory 38 is a memory for storing a time zone in which the receiver can receive a call signal, that is, a reception time zone. The clock circuit section 40 is a circuit that counts the current time under the control of the CPU 36. And the discriminator 39
Indicates the reception time zone from the reception time zone memory 38 and the clock circuit section.
This circuit fetches the current time from 40, determines whether the current time is within the reception time zone, and sends a signal to the gate of the switching transistor _Tr2 during the reception time zone to turn it on.

The key input unit 41 is a circuit that sends a corresponding key input signal to the CPU 36 when any _one of the switches SW ₁ , SW ₂ , and SW ₃ is operated. The RAM 42 is a circuit for storing received messages and the like under the control of the CPU 36.

The display 43 is configured by a liquid crystal display panel or the like, and displays data set in the buffer driver 37 as described above. The drive circuit unit 45 includes a speaker driver 46 and an LED driver 47. The speaker driver 46 is a circuit for driving a speaker 48, and the LED driver 47 is a circuit for driving an LED 49. A speaker 48 is a speaker that is driven by a speaker driver 46 to generate a ringing tone and the like, and an LED 49 is an LED driver
LE that is driven by 47 and blinks or lights up to notify the call
D. The power battery E is a battery that supplies power to the receiving unit 31, the preceding circuit unit 32, the control circuit unit 35, the drive circuit unit 45, and the like.

Next, a method of updating the reception time zone and the reception time zone in the selective calling system including the selective calling device and the receiver configured as described above will be described.

When the owner of the receiver wants to update the reception time zone of his / her receiver from the conventional reception time zone to a new reception time zone, first, the subscriber registration data storage unit 8 of the selective calling device (see FIG. 2) ) Is updated with the reception time zone already stored together with the calling number of the own receiver. When updating of the reception time period, by any button telephones TL ₁ ~TL _n shown in FIG. 2, and inputs the call number of the own receiver. At this time, the input call number is set in the call number register 5 and compared with each call number in the subscriber registration data storage unit 8 by the comparison circuit 6 in the same manner as in the first embodiment. Go. Then, when the comparison circuit 6 finds the same call number as the inputted call number from the subscriber registration data storage section 8, the current time is changed to the subscriber registration data storage section 8 as in the first embodiment. The comparison circuit 12 determines whether the time is within the reception time zone stored in association with the call number. When the current time is within the reception time zone, the control unit 17 sends a signal to the response circuit 11 based on the signal from the comparison circuit 12, and the response circuit 11 inputs a message, Please press twice "and the like, and send an announcement signal to the caller via the input / output circuit unit 2 and the public telephone network 1. in this case,
The caller listens to the announcement, and inputs information for updating the reception time zone using the key telephone. The information at this time has a predetermined format. For example, a setting code (*, 0), a password, a reception start time, a reception end time, and finally an end code (#, #)
Are arranged in this order. When the information is sent to the selective calling device via the public telephone network 1, the information is taken into the message register 3 and the setting code and the end code are detected by the function code detecting section 4. . Then, the function code detector 4 sends a signal to the effect that the setting code has been detected and a signal to have detected the end code to the controller 17. As a result, the control unit 17 sends a signal to the subscriber registration data storage unit 8 and compares the stored password in association with the same call number transmitted this time to the comparison circuit.
Send it to 3b. At this time, the comparison circuit 3b compares the sent password set in the message register 3 with the password from the subscriber registration data storage unit 8, and sends a signal indicating the result to the control unit 17. . If a signal indicating that the two passwords do not match is sent to the control unit 17, the control unit 17 sends a reset signal R to the message register 3 via the OR gate 3a to clear the message register 3 and respond. Send a signal to the circuit 11 to send an announcement signal such as "The password is different. Please enter information for updating the reception time zone again" to the caller. On the other hand, when a signal indicating that the two passwords match is sent to the control unit 17, the control unit 17
This time, a new reception time zone consisting of a new reception start time and a new reception end time sent and set in the message register 3 is stored in the subscriber registration data storage unit 8 in association with the call number. Rewrite the reception hours that are being used. Thereafter, a signal is sent from the control unit 17 to the signal processing unit 18, and the same operation as described in the first embodiment is performed. The signal is set in the call sign of the call number sent this time and the message register 3. The wireless signals related to the setting code, the reception start time zone, the reception end time zone, and the like are sequentially transmitted from the antenna 20.

As described above, the radio signal transmitted from the selective calling device is received by the above-described receiver whose circuit configuration is shown in FIG. 3 (in this case, the receiver owned by the caller). You. That is, the received information is first transmitted to the decoder unit 34
Is confirmed by the calling number to be the one sent to the receiver, and is taken into the CPU. CPU36
Detects that the received information is command information for updating the reception time zone by the setting code, rewrites the reception start time of the reception time zone memory 38 with the received reception start time, and further transmits Rewrite the reception end time with the reception end time. Thereafter, the CPU 36 outputs a predetermined signal to the speaker driver 46.
To cause the speaker 48 to generate a notification tone having a tone different from a normal ringing tone. Thus, the caller can recognize that the reception time zone of the selective calling device and the reception time zone of his / her receiver have been updated to new ones.
In order to check whether or not each of the updated time zones is the time zone intended by the caller, for example, the switch SW3 in FIG. ₃ is operated. At this time, the CPU 36 obtains a key input signal based on the operation and sets the reception time zone newly set in the reception time zone memory 38 in the buffer driver 37, whereby the reception time zone is displayed on the display 43. This allows the caller to confirm that the time zones are as intended.

Third Embodiment Next, a third embodiment of the present invention will be described. This embodiment is a selective calling apparatus used in a local selective calling system used in a factory or a hospital (that is, a calling system that does not involve a selective calling service company).

FIG. 4 shows the circuit configuration of the selective calling device. As can be seen from FIG. 4, the configuration of this embodiment is substantially the same as the selective calling device in the second embodiment shown in FIG. The configuration is the same as that of FIG. 4 (the circuit units denoted by the same reference numerals in FIG. 4 have the same functions as the circuit units in FIG. 2). However, the public telephone network 1 in FIG. 2 is necessarily a private telephone network 51 for the above-described reason, and the subscriber registration data storage unit 8 does not store a call code, Further, a circuit corresponding to the setting means 9 in FIG. 2 is also removed. As described above, since the selective calling device is for use on the premises, it is not necessary to register the calling numbers of all the receivers to be used in the subscriber registration data storage unit 8, and the calling time zone is restricted. Only the call number of the receiver of the person desiring the request and the reception time zone thereof are registered.

Further, in this embodiment, the call number of the call number register 5,
The reception time zone of the message register 3 is sent to the subscriber registration data storage unit 8 and stored.

More in a selective call device configured as, when there is a call request from one of the button telephones TL ₁ ~TL _n, call number is sent, is set to the call number register 5, the subscriber The call numbers stored in the subscriber registration data storage unit 8 are compared with each other, and it is determined in the comparison circuit 6 whether the transmitted call number is already described in the subscriber registration data storage unit 8, and as a result, Is provided to the control unit 17. If the call number has already been set in the subscriber registration data storage section 8, it is checked by the same operation as in the first embodiment whether the call number is currently in the reception time zone. When the time is within the band, the transmitter 19 transmits a radio signal for calling from the antenna 20, but when the time is outside the time, an announcement to that effect is sent to the caller.
On the other hand, if the call number transmitted this time is not stored in the subscriber registration data storage section 8, the signal processing section 18 creates a call code relating to the call number regardless of the current time. Then, the transmitter 19 transmits a radio wave of the call from the antenna 20.

Further, when the owner of the receiver updates the reception time zone of the subscriber registration data storage unit 8 for the receiver, or the reception number and reception time of the receiver are newly stored in the subscriber registration data storage unit 8. When setting a band or the like, input data of a setting code, a password, a reception start time, a reception end time, and an end code after inputting a call number in substantially the same manner as described in the second embodiment. I do.

In this case, in the selective calling device, if the transmitted call number is already set in the subscriber registration data storage unit 8, the comparison circuit 3b determines whether the password matches, as in the second embodiment. After the confirmation, the reception time zone stored in association with the call number in the subscriber registration data storage section 8 is newly sent and rewritten with the reception time zone set in the message register 3. On the other hand, when the transmitted call number is not yet set in the subscriber registration data storage unit 8, a signal from the comparison circuit 6 indicating this is given to the control unit 17, and the control unit 17 In response to this signal, a signal is sent to the subscriber registration data storage section 8, and the subscriber registration data storage section 8 receives the call number and the reception time zone transmitted from the call number register 5 and the message register 3, respectively. The password will be captured and stored.

Further, when the reception time zone of the subscriber registration data storage unit 8 is changed as described above and when a new call number and a reception time zone are set in the subscriber registration data storage unit 8, the second embodiment As in the example, a new reception time zone or the like is sent to the receiver of the caller, and the reception time zone is changed or set.

If it is necessary to delete the reception time zone set in the selective calling device, the function code detector is provided with a means for detecting a predetermined erasure code, and the erasure code from the caller, the password, After inputting the code and confirming that the passwords match on the selective calling device side, the calling number, the reception time zone, and the password to be deleted may be deleted.

The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the present invention.

[Effects of the Invention] According to the invention relating to the selective calling device of the present invention, the calling number of each receiver and the callable time zone at the calling number are stored in association with each other, and the calling request of one of the receivers is selected. When the call is sent to the calling device, if the current time is outside the callable time zone corresponding to the call number of the receiver called in the call request, a response to the calling side indicating that the call cannot be made is sent to the calling device. In the selective calling device, the callable time zone can be updated, and a signal indicating that the callable time zone has been updated is transmitted, so that the caller can issue a call request for a desired receiver. When the call is made, if the receiver is out of the receivable time zone, the caller can easily recognize that the call cannot be made, and the owner of the receiver can set the receivable time. When updating the belt, this update It is possible to provide a selective calling device that has an excellent effect that it is possible to easily and accurately determine whether or not a call has been made.

Further, the invention relating to the method of updating the receivable time zone according to the present invention transmits the call number of the receiver and the new receivable time zone after the update to the selective calling apparatus via a telephone line. Update the receivable time zone set in,
Thereafter, a new receivable time zone is sent from the selective calling device to the receiver to which the call number is given, and the already set receivable time zone is updated with the new receivable time zone. Since the present invention relates to the method of updating the receivable time zone described above, it is possible to provide an easy updating method of the receivable time zone of the selective calling system for limiting the receivable time zone of the receiver.

[Brief description of the drawings]

FIG. 1 is a diagram showing a circuit configuration of one embodiment of the invention relating to the selective calling device of the present application, FIG. 2 is a diagram showing a circuit configuration of another embodiment of the invention relating to the selective calling device of the present application, FIG. 3 is a diagram showing a circuit configuration of the receiver of the present invention, and FIG.
FIG. 3 is a diagram illustrating a circuit configuration of an embodiment of the invention relating to a method of updating a receivable time zone according to the present application. 1 public telephone network, 2 input / output circuit unit, 3 message register, 4 function code detection unit, 5 call number register, 3b, 6, 12 comparison circuit, 8 Subscriber registration data storage unit, 9 setting means,
10… Register, 11… Response circuit, 13… Oscillator circuit, 14
… Dividing circuit, 15… Timer, 16… Timing signal generator, 17… Controller, 18… Signal processor, 19… Transmitter, 20, 30… Antenna, 31… Receiver 32, pre-stage circuit section, 33 ID-ROM, 34 decoder section, 35 control circuit section, 36 CPU, 37 buffer driver, 38
Reception time zone memory, 39 ... discriminator, 40 ... clock circuit,
41 ... Key input section, 42 ... RAM, 43 ... Display unit, 45 ...
Driving circuit unit, 46 ...... speaker driver, 47 ...... LED driver, 48 ...... speaker, 49 ...... LED, 51 ...... private telephone _{network, TL 1, TL 2, TL} n ...... button telephones, T _r1 , T _r2 ...... switching transistor, E ...... power battery, SW _1, SW _2,
SW ₃ ...... Switch.

Claims (4)

(57) [Claims] 1. A method according to claim 1, wherein each call number assigned to each of the plurality of receivers is associated with a callable time zone in which each of said receivers can be called by said call number. When it is determined that the call number of the receiver that has made the call request is the call number stored in the storage means and is outside the callable time zone corresponding to the call number. A selective call device for responding to the calling side that a call cannot be made, comprising: receiving a time period update command including a call number stored in the storage means and a new callable time period; Means, rewriting means for rewriting the callable time zone stored in association with the call number in the storage means, to a new callable time zone of the time zone update command received by the update command receiving means, This rewriting means Means for transmitting a signal indicating that the callable time period has been rewritten to the receiver of the call number stored in association with the rewritten callable time period when the callable time period is rewritten by A selective calling device, comprising: 2. A password is added to said time zone update command, said storage means further stores a password in association with each call number, and said rewriting means adds said password to said time zone update command. 2. The selective calling device according to claim 1, wherein the callable time zone is rewritten only when the added password matches the password stored in the storage means. 3. The selective calling device according to claim 1, wherein the signal indicating that the callable time zone has been rewritten is a signal indicating the rewritten callable time zone. 4. A receivable time zone and a call number are respectively set, a plurality of receivers for receiving a call signal including the call number only in the receivable time zone, and a plurality of receivers are set. A selective calling device that stores a receivable time zone and a call number in association with each other, and performs a call of each receiver only during the receivable time zone stored in association with the call number of the receiver; The method of updating the receivable time zone in the selective calling system comprising: first, sending a time zone information update command including at least a call number and a new receivable time zone to the ship tack calling device, The selective calling device updates the receivable time zone stored in association with the same call number as the transmitted call number to the received name receivable time zone and stores it. At the same time, the call number and the new time zone information are transmitted to the receiver associated with the call number, and then the receiver associated with the call number is transmitted to transmit the set receivable time zone. A method of updating a receivable time zone, characterized in that the renewable time zone is updated in a new receivable time zone.