JP2001157255A - Digital wireless phone system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a digital wireless phone system that can quickly and reliably transmit character information of the same contents to a plurality of slave sets. SOLUTION: In the digital wireless phone system having a master set 101 and a plurality of the slave sets 202-204 that make wireless communications with the master set, the master set 101 has a master set wireless section 11, a master set broadcast information control section 14 that sets character information to be sent to the slave sets as broadcast information, and a master set control section 15 that controls each section. Each slave set 202 has a slave set wireless section 21, a slave set broadcast information control section 26 that extracts the character information from the broadcast information received from the master set and a slave set control section 27 that controls each section.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital radio telephone device for communicating an analog signal with a digital signal.

[0002]

2. Description of the Related Art In recent years, wireless telephone devices have been widely used with their improved convenience and economy.
Among them, a digital radio telephone device for communicating an analog signal with a digital signal has been particularly widely used.

FIG. 4 is a block diagram showing a conventional digital radio telephone apparatus.

[0004] In FIG. 4, reference numeral 11 denotes a base unit radio unit for performing wireless communication with a slave unit 200 via a base unit antenna 12, reference numeral 15 denotes a base unit control unit for controlling each unit, and reference numeral 21 denotes a base unit via a slave unit antenna 22. A wireless communication unit for performing wireless communication with the device 100; a keyboard 23 for inputting character information and the like from a caller;
Reference numeral 4 denotes a display for outputting the received character information, and reference numeral 27 denotes a slave unit control unit for controlling each unit. 201 is a slave unit 200
The slave unit has the same configuration as that of the slave unit.

[0005] The operation of the digital radio telephone apparatus configured as described above will be described.

In FIG. 4, when a user of a digital wireless telephone device sends character information (mail) to a child device 201 using the child device 200, a keyboard 23 of the child device 200 is used.
Using the display 24, the user inputs the character information to be transmitted and the number of the child device to which the character information is transmitted, and presses a key for starting communication with the parent device 100. Handset control unit 2 that has received character information by input from keyboard 23 or the like
Reference numeral 7 stores the character information and the destination slave unit number, and sends a message requesting establishment of wireless communication to the master unit 100 via the slave unit wireless unit 21 and the slave unit antenna 22. Base unit control unit 1 of base unit 100 receiving the wireless communication establishment request message via base unit antenna 12 and base unit wireless unit 11
5 transmits a response message for establishing wireless communication. Receiving the wireless communication establishment response message, slave control section 27 of slave 200 transmits the stored character information and transmission destination slave number to master 100. The parent device control unit 15 of the parent device 100 that has received the character information and the destination child device number stores the character information and sends a wireless communication establishment request message to the child device 201 of the received destination child device number. Send. Receiving the wireless communication establishment request message, handset 201 notifies the user of handset 201 of an incoming call using a means such as sounding a ringtone. When the user of handset 201 responds to the incoming call using keyboard 23, handset 201 transmits a wireless communication establishment response message. Base unit 1 receiving this wireless communication establishment response message
00 transmits the stored character information. The slave unit 201 that has received the character information displays the character information using a display. By the above operation, the child device 20
The communication of the character information from 0 to the child device 201 is completed.

[0007]

However, in the above-mentioned conventional digital radio telephone device, when the same character information is transmitted to a plurality of slave units, the master unit performs wireless communication with each slave unit. It is necessary to establish and send character information. In this case, if there is not enough available wireless channel, there is a problem that character information cannot be sent to some slave units until the wireless channel becomes available. Was.
Also, while sending text information, while establishing wireless communication with a plurality of slaves, the wireless channel becomes less available,
There was a problem that the handset could not make a call.

In this digital radio telephone apparatus, it is required that character information having the same content can be transmitted to a plurality of slave units quickly and reliably.

SUMMARY OF THE INVENTION An object of the present invention is to provide a digital radio telephone device capable of quickly and reliably transmitting the same character information to a plurality of slave units in order to satisfy this demand.

[0010]

SUMMARY OF THE INVENTION In order to solve this problem, a digital radio telephone device according to the present invention is a digital radio telephone device having a master unit and a plurality of slave units performing wireless communication between the master unit. The master unit includes a master unit wireless unit, a master unit broadcast information control unit that sets character information to be transmitted to a plurality of slave units as broadcast information, and a master unit control unit that controls each unit. Machine
It has a configuration including a slave unit radio unit, a slave unit broadcast information control unit that extracts character information from broadcast information received from the master unit, and a slave unit control unit that controls each unit.

According to this configuration, a digital radio telephone device capable of transmitting character information of the same content to a plurality of slave units quickly and reliably is obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A digital radio telephone according to a first aspect of the present invention is a digital radio telephone having a master unit and a plurality of slave units for performing wireless communication between the master unit.
The base unit includes a base unit wireless unit, a base unit broadcast information control unit that sets character information to be transmitted to a plurality of handset units as broadcast information, and a base unit control unit that controls each unit. Has a slave unit radio unit, a slave unit broadcast information control unit that extracts character information from broadcast information received from the master unit, and a slave unit control unit that controls each unit.

With this configuration, character information transmitted from one child device to a plurality of child devices is transmitted as broadcast information in the parent device, and the child device that has received the broadcast information analyzes the broadcast information. Thus, since the character information for the own handset can be received, the same character information can be quickly and reliably transmitted to a plurality of handset units. In addition, since the communication channel is not used, there is an effect that voice communication using the communication channel due to the transmission of character information is not prevented from being used because there is no available channel.

According to a second aspect of the present invention, there is provided a digital radio telephone apparatus having a plurality of master units communicating between the PBXs and a plurality of slave units communicating wirelessly between the master units. , PBX are a base unit interface unit for controlling communication with a plurality of base units, a character information transmitting / receiving unit for transmitting / receiving character information to / from the base unit, and a PB for controlling each unit.
An X control unit, wherein the master unit controls communication with the PBX, and a master unit broadcast information control unit that sets character information to be transmitted to a plurality of slave units as broadcast information, and a base unit broadcast information control unit. It has a PBX interface unit and a master unit control unit for controlling each unit.

With this configuration, character information for a plurality of slaves transmitted from one slave via the one master to the PBX is transmitted from all masters connected via the master interface. Since the information can be sent as the broadcast information, by registering a plurality of slaves in the PBX, the same character information can be quickly and reliably transmitted to the registered slaves. .

According to a third aspect of the present invention, there is provided a digital wireless telephone device having a master unit and a plurality of slave units for performing wireless communication between the master unit, wherein the master unit includes a master unit wireless unit and a master unit wireless unit. A base station broadcast information control unit for setting character information to be transmitted to a plurality of slave units as broadcast information, and transmitting a part of one character information by broadcast and establishing a wireless link to all of one character information It has a character information transmission control unit for controlling transmission later, and a master unit control unit for controlling each unit. The slave unit extracts character information from the slave unit wireless unit and broadcast information received from the master unit. And a slave information control unit for controlling character information received after wireless communication is established, and a slave unit control unit for controlling each unit.

With this configuration, if the character information transmitted from one slave to a plurality of slaves is too long to fit in the broadcast information, the part of the master unit that only fits in the broadcast information is broadcast. Information, and the rest of the information can be transmitted to multiple handsets even if long text information can be received because the user of the handset can call and establish a wireless link when information is needed. The information can be transmitted, and the user who needs all the information can quickly receive the information.

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIG.

(Embodiment 1) FIG. 1 is a block diagram showing a digital radio telephone apparatus according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 11 denotes a base unit radio unit for performing radio communication with the slave units 202, 203, and 204 via the base unit antenna 12, and 14 denotes character information to be transmitted to the slave units 202 to 204 as broadcast information. A base unit broadcast information control unit to be set, 15 is a base unit control unit that controls each of the units 11, 12, and 14, 21 is a handset wireless unit that performs wireless communication with the base unit 101 via a handset antenna 22, and 23 is A keyboard for inputting character information and the like from the caller; 24, a display for outputting the received character information and the like; 26, a slave unit broadcast information control unit for extracting character information from broadcast information received from the base unit 101; 27 is each part 2
A slave unit control unit that controls 1, 2, and 26. 203,
A slave 204 has the same configuration as the slave 202.

The operation of the digital radio telephone constructed as described above will be described.

In FIG. 1, when the user of the digital wireless telephone device sends character information (mail) to a plurality of slave units using the slave unit 202, the keyboard 23 of the slave unit 202 is used.
Using the display 24, the user inputs the character information to be sent and the numbers of a plurality of slave units to which the character information is transmitted, and presses a key for starting communication with the master unit 101. The handset control unit 27, which has received the character information by the input from the keyboard 23 or the like, stores the character information and a plurality of transmission destination handset numbers, and sends it to the base unit 101 via the handset wireless unit 21 and the handset antenna 22. A message requesting establishment of wireless communication is sent to the user.

Base unit 101 having received the wireless communication establishment request message via base unit antenna 12 and base unit wireless unit 11
Transmits a response message for establishing wireless communication. Receiving the wireless communication establishment response message, the handset control unit 27 of the handset 202 sends the message including the character information and a plurality of destination handset numbers for sending the character information to the handset wireless unit 21 and the handset antenna 22. Parent device 1 through
01 is transmitted.

Base unit control unit 1 of base unit 101 receiving the above message via base unit antenna 12 and base unit radio unit 11
5 confirms that the character information is transmitted to a plurality of slaves, and confirms that the character information, a slave unit number of a transmission source that has requested transmission of the character information, and a plurality of transmission destinations that transmit the character information. A message requesting transmission of the broadcast information including the device number is sent to the parent device broadcast information control unit 14. Upon receiving the broadcast information transmission request message, the parent device broadcast information control unit 14 determines the identifier of the character information (mail), the source device number of the character information, and the plurality of destination child devices. Broadcast information composed of a number and character information is created, and the broadcast information is set as broadcast information on a control channel via the base unit control unit 15, the base unit radio unit 11, and the base unit antenna 12. And send.

The broadcast information is received by all the slaves 202 to 204 receiving the control channel of the master 101.
In the handset 203 that has received the broadcast information, the broadcast information is sent to the handset broadcast information control unit 26 via the handset antenna 22, the handset wireless unit 21, and the handset control unit 27. The slave unit broadcast information control unit 26 analyzes the content of the received broadcast information and checks whether or not its own slave unit number is included.
If it is, the reception of the character information is transmitted to the user of the child device 203 via the child device control unit 27 using a means such as sounding a ring tone. When the user of the slave unit 203 responds using the keyboard 23, the response of the user is transmitted to the slave unit broadcast information control unit 26 via the slave unit control unit 27, and the slave unit broadcast information control unit 26 Causes the display 24 to display the stored character information via the slave unit control unit 27.

Further, the handset 204 that has received the broadcast information
However, the broadcast information is transmitted to the slave unit broadcast information control unit 26 via the slave unit antenna 22, the slave unit wireless unit 21, and the slave unit control unit 27. Here, as a result of analyzing the content of the broadcast information received in the slave unit broadcast information control unit 26 and checking whether or not the slave unit number is included, if there is no slave unit number, Do nothing. Therefore, the handset 204
The character information is not transmitted to the user of.

As described above, according to the present embodiment, master unit 101 includes master unit wireless unit 11 and a plurality of slave units 202 to 20.
4 has a base station broadcast information control unit 14 for setting the character information to be transmitted to the broadcast information, and a base unit control unit 15 for controlling each of the units 11 and 14. Part 21
And a slave unit control unit 27 that controls each of the units 21 and 26 by including a slave unit broadcast information control unit 26 that extracts character information from the broadcast information received from the master unit 101. Character information transmitted from the child device 202 to the plural child devices 203 and 204 is transmitted as broadcast information in the parent device 101, and the child devices 203 and 204 receive the broadcast information.
Can analyze the broadcast information and receive the character information for the own handset, so that the same character information can be quickly and reliably transmitted to a plurality of handset units.

(Embodiment 2) FIG. 2 is a block diagram showing a digital radio telephone apparatus according to Embodiment 2 of the present invention.

In FIG. 2, reference numeral 31 denotes master units 102 and 103.
A base unit I / F unit (base unit interface unit) for controlling communication with the base unit; 32, a character information transmitting / receiving unit for transmitting / receiving character information to / from the base units 102, 103; 33, a PBX control unit for controlling the units 31, 32; 11 is a slave unit 2 via a master unit antenna 12
A base unit wireless unit for performing wireless communication with the slave units 05 and 206, a base unit broadcast information control unit 14 for setting character information to be transmitted to the slave units 205 and 206 as broadcast information, and a PBX 16 for controlling communication with the PBX 300 An I / F unit (PBX interface unit) 17 is a master unit control unit that controls the units 11, 12, 14, and 16. Master device 103 has the same configuration as master device 102. The slaves 205 and 206 have the same configuration as the slave 202 in FIG. 1 and perform the same operation as the slave 202.

The operation of the digital radio telephone constructed as above will be described.

First, the slave units 205 and 206 are PBX
It shall be registered in. When the user wants to register the child device 205, the user of the child device 205
Then, a message requesting registration is transmitted from the child device 205 to the parent device 102 by using the “3”. The control unit 15 of the base unit 102 that has received the message via the base unit antenna 12 and the base unit wireless unit 11 transmits a message requesting assignment of a handset number to the PBX 300 via the PBX I / F unit 16. PBX control unit 33 of PBX 300 that has received the slave unit number assignment request message via master unit I / F unit 31
Assigns an empty slave unit number and transmits a slave unit number assignment notification message to the master unit 102. PBXI /
The control unit 15 of the base unit 102 that has received the message via the F unit 16 transmits a registration reception message including the assigned handset number to the handset 205 via the base unit wireless unit 11 and the base unit antenna 12. Send. The slave unit 205 receives the message, stores the sent slave unit number, and the registration is completed. The slave unit 206 performs the same operation, and the PBX 30
0 is registered. Further, in the present embodiment, the child device 205
Receives the control channel transmitted by the base unit 102, and
06 is assumed to have received the control channel transmitted by the base unit 103.

In FIG. 2, when a user of the digital wireless telephone device sends character information (mail) to a plurality of slave units using slave unit 205, the same operation as in the first embodiment is performed. Then, a message including character information and a plurality of destination child device numbers for transmitting the character information is transmitted to master device 102.

Base unit control unit 1 of base unit 102 receiving the above message via base unit antenna 12 and base unit radio unit 11
7 confirms that the character information is transmitted to a plurality of slaves, and determines the character information, a slave unit number of a transmission source that has requested transmission of the character information, and a plurality of transmission destinations for transmitting the character information. A message requesting transmission of the broadcast information including the device number is sent to the parent device broadcast information control unit 14. Upon receiving the broadcast information transmission request message, the parent device broadcast information control unit 14 determines the identifier of the character information (mail), the child device number of the character information transmission source, and the plurality of destination child devices. Broadcast information composed of a number and character information is created and sent to the base unit control unit 17.
The master unit control unit 17 having received the broadcast information transmits the broadcast information to the PBX 300 via the PBX interface unit 16.
Send to The broadcast information is transmitted to the parent device interface unit 3.
1. The character information transmission / reception unit 32 of the PBX 300 received via the PBX control unit 33 creates a message including the broadcast information and an identifier requesting that all broadcast units transmit the broadcast information. , PBX control unit 33 and master unit interface unit 31 to send to each master unit. The base unit control unit 17 of the base unit 102 that has received the message via the PBX interface unit 16 transmits the broadcast information set in the message via the base unit wireless unit 11 and the base unit antenna 12 on the control channel. It is set and transmitted as broadcast information.
Master device 103 also receives the message from PBX 300, sets the broadcast information set in the message as broadcast information on the control channel, and transmits it. The slave unit 206 that has received the broadcast information performs the same operation as in the first embodiment, and transfers the character information to the slave unit 206.
To the user.

As described above, according to the present embodiment, PB
X300 includes a base unit interface unit 31 for controlling communication with a plurality of base units 102 and 103, and base units 102 and 103.
Character information transmitting / receiving unit 32 for transmitting / receiving character information to / from
And a PBX control unit 33 that controls each unit.
Reference numerals 02 and 103 denote a base unit radio unit 11, a base unit broadcast information control unit 14 that sets character information to be transmitted to a plurality of handset units as broadcast information, and a PBX interface unit 16 that controls communication with the PBX 300. And the parent device control unit 17 for controlling the respective units 11, 14, and 16, the PBX 30 from one child device 205 via one parent device 102
The character information for the plurality of slaves transmitted to the master unit 10 is transmitted to all master units 10 connected via the master unit interface unit 31.
Since the broadcast information can be transmitted from 2, 103, the plurality of slave units are registered in the PBX 300, so that the same character information can be quickly and reliably transmitted to the registered slave units. it can.

(Embodiment 3) FIG. 3 is a block diagram showing a digital radio telephone apparatus according to Embodiment 3 of the present invention.

In FIG. 3, reference numeral 11 denotes a base unit radio unit for performing radio communication with the sub units 207, 208, and 209 via the base unit antenna 12, and 14 denotes character information to be transmitted to the sub units 207 to 209 as broadcast information. Base station broadcast information control unit to be set, 18 is 1
A character information transmission control unit for transmitting a part of the two pieces of character information by broadcasting and transmitting the whole after the wireless link is established; 19, a master unit control unit for controlling each of the units 11, 12, 14, and 18; Reference numeral 21 denotes a wireless communication unit for performing wireless communication with the master unit 104 via the slave antenna 22; 23, a keyboard for inputting dial information from a caller; 24, a display for outputting received character information; A handset broadcast information control unit for extracting character information from broadcast information received from the handset 104, a character information reception control unit 28 for controlling character information received after wireless communication is established, and 29, each unit 21, 24, 2
A slave unit control unit for controlling the slave units 6 and 28. Slave unit 208, 2
09 has the same configuration as the slave unit 207.

The operation of the digital radio telephone constructed as above will be described.

In FIG. 3, a user of the digital wireless telephone device uses a plurality of slave units 208 and 209 by using the slave unit 207.
When sending text information (mail) to
By performing the same operation as in the case of (1), a message including character information and a plurality of transmission destination child device numbers for transmitting the character information is transmitted to master device 104.

Base unit control unit 1 of base unit 104 receiving the above message via base unit antenna 12 and base unit radio unit 11
9 transmits the character information to the character information transmission control unit 18 after confirming that the character information is transmitted to a plurality of slaves.
The character information transmission control unit 18 receiving the character information checks the length of the character information. At this time, if the character information is longer than the information length that can be set in the broadcast information, only the length that can be set in the broadcast information is extracted from the first character of the character information, and it is determined that there is a continuation at the end. The message is set to a message requesting the transmission of the broadcast information by adding the indicated characters, and is sent to the base unit broadcast information control unit 14 via the base unit control unit 19. Upon receiving the broadcast information transmission request message, the parent device broadcast information control unit 14 determines the identifier of the character information (mail), the child device number of the character information transmission source, and the plurality of destination child devices. Number and
Broadcast information composed of character information is created, and the broadcast information is set as broadcast information on a control channel and transmitted via the base unit control unit 19, the base unit radio unit 11, and the base unit antenna 12. I do.

The slaves 208 and 209 that have received the broadcast information perform the same operation as in the first embodiment, and replace the slave number of the own slave with the destination slave number in the broadcast information. Is included, the character information is transmitted to the user of each of the child device 208 and the child device 209. The user knows that the character information has a continuation since there is a character indicating that there is a continuation at the end of the character information. Here, when the user of the child device 208 wants to receive all the character information, the keyboard 23 is used to perform an operation of receiving all the character information. Receiving the input from the keyboard 23, the slave unit control unit 29 creates a wireless link establishment request message and transmits it to the master unit 104 via the slave unit wireless unit 21 and the slave unit antenna 22. Master unit control unit 19 of master unit 104 that has received the wireless communication establishment request message via master unit antenna 12 and master unit wireless unit 11
Transmits a response message to the wireless communication establishment request to the slave unit 208 via the master unit wireless unit 11 and the master unit antenna 12. The slave unit control unit 29 of the slave unit 208 that has received the response message via the slave unit antenna 22 and the slave unit wireless unit 21
Transmits a message requesting transmission of character information to the parent device 104 via the child device radio unit 21 and the child device antenna 22. The character information transmission request message is transmitted to the base unit antenna 1
2. The base unit control unit 19 of the base unit 104, which has been received via the base unit wireless unit 11, sends the message to the character information transmission control unit 18. The character information transmission control unit 18 receiving the message creates a message in which all the character information is set, and transmits the message to the base unit control unit 19, the base unit radio unit 11, the base unit antenna 1
The character information message is sent to the slave unit 208 via the terminal 2. The slave unit control unit 2 of the slave unit 208 that has received the character information message via the slave unit antenna 22 and the slave unit wireless unit 21
9 sends the received character information to the character information reception control unit 28. The character information reception control unit 28 receiving the character information,
All the received character information is displayed on the display 24 via the slave unit control unit 29 and transmitted to the user of the slave unit 208.

When the user of the slave unit 209 determines that all the character information is not necessary and the received character information is sufficient based on the character information received in the broadcast information,
By not performing any operation, a wireless link is not established, and all character information is not received.

As described above, according to the present embodiment, base unit 104 includes base unit radio unit 11 and base unit broadcast information control unit that sets character information to be transmitted to a plurality of slave units as broadcast information. 14
And a character information transmission control unit 18 that transmits part of one piece of character information by broadcasting and controls transmission of all one piece of character information after the establishment of a wireless link, and controls the units 11, 14, and 18. A slave unit 207, 20;
Reference numerals 8 and 209 denote a handset radio unit 21, a handset broadcast information control unit 26 for extracting character information from broadcast information received from the base unit 104, and character information for controlling character information received after wireless communication is established. By including the reception control unit 28 and the slave unit control unit 29 that controls the units 21, 26, and 28, character information transmitted from one slave unit to a plurality of slave units is included in broadcast information. If the length is too long to fit, the base unit 104 transmits a portion of the broadcast information that is enough to be included in the broadcast information,
The remaining text information (more precisely, all text information) can be received by the user of the cordless handset by establishing a wireless link by making a call when text information is needed. The user who needs all the information can quickly receive the information.

[0043]

As described above, according to the digital radio telephone apparatus of the first aspect of the present invention, a digital radio telephone apparatus having a master unit and a plurality of slave units performing wireless communication between the master unit is provided. The master unit includes a master unit wireless unit, a master unit broadcast information control unit that sets character information to be transmitted to a plurality of slave units to broadcast information, and a master unit control unit that controls each unit. The slave unit has a slave unit wireless unit, a slave unit broadcast information control unit that extracts character information from broadcast information received from the master unit, and a slave unit control unit that controls each unit. Character information transmitted from the child device to a plurality of child devices is transmitted as broadcast information in the parent device, and the child device that has received the broadcast information analyzes the broadcast information and receives the character information for its own child device. So that the same text information can be transmitted to multiple slave units quickly and reliably. Advantageous effect of wear can be obtained. In addition, since the communication channel is not used, there is an advantageous effect that voice communication using the communication channel due to transmission of character information is not prevented from being used because there is no available channel.

According to the second aspect of the present invention, there is provided a digital wireless telephone apparatus having a plurality of master units communicating between the PBXs and a plurality of slave units communicating wirelessly between the master units. The PBX has a base unit interface unit for controlling communication with a plurality of base units, a character information transmitting / receiving unit for transmitting / receiving character information to / from the base unit, and a PBX control unit for controlling each unit. The base unit includes a base unit radio unit, a base unit broadcast information control unit that sets character information to be transmitted to a plurality of handset units as broadcast information, a PBX interface unit that controls communication with the PBX, and each unit. And a master unit control unit for controlling the PB from one slave unit via one master unit.
Since character information for a plurality of slaves sent to X can be sent as broadcast information from all masters connected via the master interface unit, by registering a plurality of slaves in the PBX, Thus, the advantageous effect that character information having the same content can be quickly and reliably transmitted to the plurality of registered slave units is obtained.

According to a third aspect of the present invention, there is provided a digital wireless telephone apparatus having a master unit and a plurality of slave units performing wireless communication between the master unit and the master unit, wherein the master unit is a wireless base station. Unit, a base station broadcast information control unit that sets character information to be transmitted to a plurality of slave units as broadcast information, and a part of one character information to be transmitted by broadcast, and one character information to be transmitted entirely. A character information transmission control unit that controls transmission after link establishment, and a master unit control unit that controls each unit. The slave unit transmits character information from a slave unit wireless unit and broadcast information received from the master unit. Device, a character information reception control unit that controls character information received after wireless communication is established, and a child unit control unit that controls each unit. If the character information to be sent to the In the master unit, only the part that can be included in the broadcast information should be transmitted as broadcast information, and the remaining information should be received by the user of the slave unit by making a call and establishing a wireless link when information is needed. Therefore, even long character information can be transmitted to a plurality of slaves, and an advantageous effect that a user who needs all the information can quickly receive the information can be obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a digital wireless telephone device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a digital wireless telephone device according to a second embodiment of the present invention;

FIG. 3 is a block diagram showing a digital wireless telephone device according to a third embodiment of the present invention;

FIG. 4 is a block diagram showing a conventional digital radio telephone device.

[Explanation of symbols]

11 Base Unit Radio Unit 12 Base Unit Antenna 14 Base Unit Broadcast Information Control Unit 15, 17, 19 Base Unit Control Unit 16 PBX Interface Unit (PBX I / F Unit) 18 Character Information Transmission Control Unit 21 Handset Radio Unit 22 Remote unit antenna 23 Keyboard (operation input unit) 24 Display (display unit) 26 Remote unit broadcast information control unit 27, 29 Remote unit control unit 28 Text information reception control unit 31 Base unit interface unit (base unit I / F unit) 32 Character information transmitting / receiving unit 33 PBX control unit 101, 102, 103, 104 Master unit 202, 203, 204, 205, 206, 207, 2
08, 209 slave unit 300 PBX

Claims (3)

[Claims] 1. A digital wireless telephone device having a master unit and a plurality of slave units performing wireless communication between the master unit, wherein the master unit transmits a master unit wireless unit and the plurality of slave units to the plurality of slave units. A base unit broadcast information control unit that sets character information to be broadcasted as broadcast information; and a base unit control unit that controls each unit. The slave unit includes a slave unit radio unit and a slave unit received from the master unit. A digital radio telephone device, comprising: a handset broadcast information control unit for extracting character information from broadcast information; and a handset control unit for controlling each unit. 2. A digital radio telephone device comprising: a plurality of base units performing communication between a PBX and the PBX; and a plurality of slave units performing wireless communication between the base units, wherein the PBX includes the plurality of base units. A master unit interface unit for controlling communication with the master unit, a character information transmitting / receiving unit for sending / receiving character information to / from the master unit, and a PBX control unit for controlling each unit; A device radio unit, a base unit broadcast information control unit that sets character information to be transmitted to the plurality of slave units as broadcast information, a PBX interface unit that controls communication with the PBX,
A digital radio telephone device comprising: a base unit control unit for controlling each unit. 3. A digital radio telephone device having a master unit and a plurality of slave units for performing wireless communication between the master unit, wherein the master unit transmits to the master unit wireless unit and the plurality of slave units. And a base station broadcast information control unit that sets the text information to be transmitted as broadcast information, and controls transmission of part of one piece of text information by broadcast, and transmission of all of the one piece of text information after a wireless link is established. A character information transmission control unit, and a base unit control unit that controls each unit. The slave unit includes a slave unit wireless unit and a slave unit that extracts character information from broadcast information received from the master unit. A digital wireless telephone device comprising: a broadcast information control unit; a character information reception control unit that controls character information received after wireless communication is established; and a slave unit control unit that controls each unit.