JP2986643B2 - Nurse call cordless intercom - Google Patents

Abstract

PURPOSE:To issue the outgoing and incoming calls of a line wire between a master cordless telephone set and a slave cordless telephone set by a main device provided with central office lines >=2. CONSTITUTION:This system is equipped with the main device PQ to which first and second central office lines are connected, plural master cordless telephone sets MQ1-MQn connected in parallel with the main device and bus cables L1-L4, and plural slave cordless telephone sets SQ1-SQm which receive down radio waves emitted from the plural master cordless telephone sets and transmit up radio waves. The main device is equipped with a down radio wave transmission order storage circuit 19, and a maximum electric field strength definition circuit 18 which defines the master cordless telephone set which receives the up radio wave with the maximum electric field strength of plural transmission origin master cordless telephone sets emitting the down radio waves according to the down radio wave transmission order storage circuit. Furthermore, the plural master cordless telephone sets are equipped with speech path forming switches SW1-SW3 which form a speech path between a transmission origin slave cordless telephone set which transmits the up radio wave and an incoming call destination master cordless telephone set with the maximum electric field strength of up radio wave. Furthermore, the plural slave cordless telephone sets are equipped with radio reception circuits 32 which receive the down radio wave, and ringers 36 operated replying to a call by the radio reception circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nurse call cordless communication device, and more particularly to a main device to which two or more office lines are connected, a plurality of cordless parent devices connected to the main device, and a plurality of cordless parent devices. The present invention relates to a nurse call cordless communication device including a plurality of cordless handsets that communicate with each other using uplink radio waves and downlink radio waves.

[0002]

2. Description of the Related Art Conventionally, a nurse call cordless communication device has master numbers 1001, 1002 as shown in FIG.
Are provided, and the cordless parent machines MQ1 to
MQn is provided. Cordless parent machine MQ1, MQ2
To MQn are connected by an external line bus cable L11, an internal line bus cable L12, a nurse call bus cable L13, and a control data bus cable L14, and the specified cordless base unit MQ1 is connected to the office line L0, Nurse call line L for nurse call bus cable L13
15 are connected.

[0003] The downlink radio wave fs is radiated from the transmission antennas 1a of the cordless master units MQ1, MQ2 to MQn, and the reception antenna 10a receives the uplink radio wave fr. Handset number 2
Cordless handset SQ1 provided with 001, 2002...
The sub-unit antennas 31a to SQm receive the downlink radio wave fs and emit the uplink radio wave fr.

[0004]

[Problems that the Invention is to Solve such Nasuko
In order to increase the number of office lines to two or more lines in a cordless telephone device, all cordless base units must be provided with a function of two lines, which complicates the circuit configuration and requires a plurality of office lines connected to the cordless base unit. There is a drawback that it is not easy to control the communication path formation with the cordless handset.

[0005]

THE INVENTION An object of the present invention has been made in view of the difficulties mentioned above, external onset between the cordless base unit and cordless handset by the main device provided with a central office line or two-line, na capable incoming call
No call cordless communication device is provided.

[0006]

In order to achieve this object, a nurse call cordless communication device according to the present invention comprises a main unit to which first and second office lines, a downstream nurse call line and an upstream nurse call line are connected. And first and second extension bus cables corresponding to the first and second office lines, nurse call bus cables corresponding to down and up nurse call lines, and control data buses for office lines and nurse calls. The main unit includes a plurality of cordless base units connected in parallel to the main unit with cables, and a plurality of cordless slave units that receive downlink radio waves radiated from the cordless base units and transmit uplink radio waves. Is the radio wave transmission order storage means, and the command which received the upstream radio wave of the maximum electric field strength among the plurality of source cordless base units which radiated the downstream radio waves according to the downstream radio wave transmission order storage means. A call between a cordless base unit that transmits upstream radio waves to a plurality of cordless base units and a destination cordless base unit whose upstream radio waves have the maximum field strength is provided with a maximum electric field strength determining means for determining a dress main unit. A plurality of cordless cordless handsets are provided with a radio receiving circuit for receiving downlink radio waves, and a ringer that operates in response to a call by the radio receiving circuit.

[0007]

In this nurse call cordless communication device, an empty downlink from the source cordless base unit polled according to the downlink radio transmission sequence storage means provided in the main unit to which the first and second office lines are connected. Emit radio waves. The ringer operates when the down-link radio wave is received by the wireless receiving circuit of the cordless cordless handset that has received the down-link radio wave. When a response is made to the operation of the ringer, an upstream radio wave paired with a downstream radio wave is radiated from the source cordless handset to the destination cordless parent machine. The plurality of destination cordless parent devices that have received the uplink radio wave output the electric field strength and the own parent device number to the main device. In the main device, the maximum electric field strength determining means determines which of the destination cordless parent devices has received the uplink electric wave having the maximum electric field strength from among the electric field strengths input from the plurality of destination cordless parent devices, and It instructs the cordless parent device to operate the communication path forming means. When the determined communication path forming means of the destination cordless base unit operates, a communication path with the source cordless slave unit is formed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a nurse call cordless communication device according to the present invention will be described below with reference to the drawings. In FIG. 1, a nurse call cordless communication device according to the present invention includes a main device PQ to which first and second office lines L5 and L6 are connected, and a plurality of main devices connected in parallel by bus cables L1 to L4. It has cordless master units MQ1 to MQn, and a plurality of cordless slave units SQ1 to SQm that receive downlink radio waves fs radiated from the plurality of cordless master units MQ1 to MQn and transmit uplink radio waves fr.

The main unit PQ has a downstream radio wave transmission order storage circuit 19 and a downstream radio wave f according to the downstream radio wave transmission order storage circuit.
and a maximum electric field strength determination circuit 18 for determining the cordless parent device that has received the uplink electric wave fr of the maximum electric field intensity among the plurality of source cordless parent devices that have emitted s. A plurality of cordless master units MQ1 to MQn have a communication path forming switch SW1 to form a communication path between a source cordless handset transmitting the up-link radio wave fr and a called cordless base unit having the up-link radio wave fr at the maximum electric field strength. SW3 is provided.

The plurality of cordless handsets SQ1 to SQm are provided with a radio receiving circuit 32 for receiving the down radio wave fs and a ringer 36 which operates in response to a call by the radio receiving circuit. As shown in FIG. 2, the main device PQ includes a first local line incoming detection circuit 11, a second local line incoming detection circuit 12, and a first local line connected to the first local line L5 and the second local line L6. Current transmitting circuit 13, second local line current transmitting circuit 14, main device control data transmitting circuit 15a, main device control data receiving circuit 15
b, bidirectional for a nurse call connected to the first station line connection switch SW4, the second station line connection switch SW5, the nurse call line connection switch SW6, the down nurse call line L7, and the up nurse call line L8. Amplifier 16, Nurse call hybrid coil 17,
A main unit-to-nurse call control data receiving circuit 16b, a main unit-to-nurse call control data transmitting circuit 16a, a main unit CPU 20 to which a polling data storage ROM 19 and an upstream radio field intensity storage RAM 18 are connected.

Further, the first local line terminal T5 and the second local line terminal T5 of the first local line L5 and the second local line L6.
6 is connected to the input side of the first local line incoming detection circuit 11 and the second local line incoming detection circuit 12, and the output side is connected to the main unit CPU2.
0 is connected to the control input side. Furthermore, the main unit CPU
The first extension bus cable terminal T1 and the second extension bus cable terminal T2 are connected to the switching contacts of the first office line connection switch SW4 and the second office line connection switch SW5 to which the control side 20 is connected. A first local line current transmitting circuit 13 and a second local line current transmitting circuit 14 are connected to the normally closed contacts. Further, the normally open contact has a first local line terminal T
5 and the second local line terminal T6 are connected.

The four-wire side of the nurse call hybrid coil 17 is connected to the downstream nurse call line terminal T7 and the upstream nurse call line terminal T8 of the downstream nurse call line L7 and the upstream nurse call line L8 via the nurse call bidirectional amplifier 16. And the 2-wire side is the main unit CPU 20
Is connected to a nurse call bus cable terminal T3 via a normally open contact of a nurse call line connection switch SW6 to which the control input side is connected.

The control input side of the main unit control data transmission circuit 15a is connected to the main unit CPU 20, the transmission side is connected to a control data bus cable terminal T4, and the control data bus cable terminal T4 is connected to the main unit control data The upstream audio signal output side of the nurse call bidirectional amplifier 16 is connected to the control input side of the main device CPU 20 via the receiving circuit 15b, and demodulates control data modulated by the out-of-band carrier of the upstream audio signal. It is connected to the control input side of the main unit CPU 20 via the main unit-to-nurse call control data receiving circuit 16b, and the downstream audio signal input side is connected to the main unit CP.
The output side of the main unit-to-nurse call control data transmission circuit 16a that modulates control data with the out-of-band carrier of the downstream audio signal under the control of U20 is connected.

A first local line connection switch SW
4. The main unit C is connected to the control input side of the second office line connection switch SW5 and the nurse call line connection switch SW6.
The control output side of the PU 20 is connected. As shown in FIG. 3, the cordless master units MQ1 to MQn demodulate the uplink radio wave input from the radio reception circuit 8 and the downlink audio signal modulator 2 for outputting the downlink audio signal modulated to the radio transmission circuit 1. An uplink radio demodulator 9, a first extension bidirectional amplifier 3a,
Second extension bidirectional amplifier 3b, nurse call bidirectional amplifier 3c, first extension speech network 4, second extension speech network 5, nurse call hybrid coil 6, control data receiving circuit 7a, control data transmission circuit 7b, a main unit CPU 10 to which a first extension switch SW1, a second extension switch SW2, a nurse call switch SW3, a cross point switch SX, and a main unit number setting button FK1 are connected.

The output side of the radio transmission circuit 1 is connected to a transmission antenna 1a via a transmission antenna terminal T11. The receiving antenna terminal T to which the receiving antenna 8a is connected
Reference numeral 12 is connected to the input side of the wireless receiving circuit 8. The first extension bus cable terminal T1, the second extension bus cable terminal T2, the nurse call bus cable terminal T3, and the control data bus cable terminal T4 have a first extension bus cable L1 and a second extension bus cable L2. , A nurse call bus cable L3 and a control data bus cable L4.

The first extension bus cable terminal T1 and the second
The output sides of the first extension switch SW1 and the second extension switch SW2 to which the extension bus cable terminal T2 is connected are the downstream audio signal side and the upstream audio of the first extension speech network 4 and the second extension speech network 5. The first and second extension bidirectional amplifiers 3a and 3a are connected to the signal side.
b. Further, the first extension bidirectional amplifier 3
a and the downstream audio signal side of the second extension bidirectional amplifier 3b are connected to the cross point switch SX.

Further, a bus cable terminal T for nurse call
The output side of the nurse call switch SW3 to which 3 is connected is connected to the nurse call hybrid coil 6, and the downstream audio signal side and the upstream audio signal side of the nurse call hybrid coil 6 are passed through the nurse call bidirectional amplifier 3c. To the cross point switch SX.

The downstream audio signal side of the cross point switch SX is connected to pins P1, P3,
P5 and the upstream audio signal side is connected to the upstream radio demodulator 9
Pins P2, P4, and P6. The output side of the control data receiving circuit 7a to which the control data bus cable terminal T4 is connected is connected to the control input side of the master unit CPU 10, and the control output side is connected via the control data transmitting circuit 7b to the control data bus cable terminal T4. Is connected to

The cordless handsets SQ1 to SQm include a handset CPU 40 to which a transmission / reception filter 31, a radio reception circuit 32, a speaker 33, a radio transmission circuit 35, a ringer 36, a microphone 34, and a handset number setting button FK2 are connected. Is provided. The transmission / reception filter 31 is connected to the slave terminal T13 to which the slave antenna 31a is connected.
The output side of 1 is connected to a speaker 33 via a wireless receiving circuit 32. The control output side of the wireless reception circuit 32 is connected to the slave unit CPU 40, and the output side of the wireless transmission circuit 35 to which the control output side of the slave unit CPU 40 is connected is connected to the input side of the transmission / reception filter 31. Further, a microphone 34 is connected to the input side of the wireless transmission circuit 35,
The control output side of the PU 40 is connected to the speaker 33 via the ringer 36.

In the thus constructed nurse call cordless communication device, the first local line L5 shown in FIG.
, The first local line incoming detection circuit 11 operates.
When the office line incoming detection circuit 11 operates, the first office line connection switch SW4 operates under the control of the main unit CPU 20, and the first office line current transmission circuit 13 passes through the first extension bus cable terminal T1 to the second office line connection switch SW4. The call current sent to the extension bus cable L1 is interrupted, and the first office line L5 is interrupted.
And the first extension bus cable L1.

The main unit CPU 20 sequentially polls the cordless parent machines MQ1 to MQn based on the polling data stored in the ROM 19 for storing polling data. The main unit CPU 10 of the polled cordless main units MQ1 to MQn shown in FIG.
In response to the downstream radio wave blocking data (stored in the upstream radio field intensity storage RAM 18) transmitted from the main device control data transmission circuit 15a of the PU 20, the downstream radio wave fs (fs is f1, f3, One of the three waves of f5
), And receives an upward radio wave fr (fr is one of f2, f4 and f6). The down-going radio waves f1,... And the up-going radio waves f2,.

The polled cordless parent machine M
Q1 to MQn are master unit numbers 1 to clarify the radio wave emitting source
For example, a down radio wave f1 modulated with 001 and event data instructing the ringer 36 to operate is emitted.
Cordless cordless handsets SQ1 to SQ for all incoming call destinations
m, the ringers 36 of all the cordless cordless handsets SQ1 to SQm operate according to the event data for operating the ringer 36 included in the downstream radio wave f1. When the cordless handset SQ1 responds to the operation of the ringer 36, for example, response event data is radiated by the upward radio wave f2 paired with the downstream radio wave f1. Control data transmission circuit 7 for destination cordless parent machine MQ1 to MQn
b transmits its own master unit number and uplink radio field intensity to the main unit control data receiving circuit 15b of the main unit CPU 20 via the control data bus cable L4.

The main unit CPU 20 sequentially stores the input upstream radio field intensity data in the upstream radio field intensity storage RAM 18, and determines, for example, the maximum destination cordless parent machine MQ1 among the stored upstream radio field intensity, Switch S for first extension of fixed destination cordless base unit MQ1
Main device control data transmission circuit 15a to operate W1
Sends control data. Master device CPU 10 receives control data through control data receiving circuit 7a.
The switch SW1 for the first extension is operated. When the switch SW1 for the first extension operates, the crosspoint switch S
For example, the down voice signal and the up voice signal by the down radio wave f1 and the up radio wave f2 are modulated and demodulated via X, and the response signal from the destination cordless handset SQ1 of the down radio wave f1 is transmitted to the first extension bus cable L1, which is already operating. The data is transmitted to the first local line L5 via the first local line connection switch SW4.

In the outside line transmission, under control of the polled cordless parent machines MQ1 to MQn, the parent machine CPU10 emits a down radio wave fs (fs is one of three waves f1, f3 and f5) of the empty channel. Inform the source cordless handset SQ1 of which vacant channel should transmit the call request data. When the source cordless handset SQ1 emits outgoing event data using, for example, the up radio wave f2, the switch SW1 for the first extension operates in, for example, the cordless parent machine MQ1, which has received the up radio wave f2 having the maximum electric field strength. Subsequent operations are performed according to the case of an incoming call from outside.

A call path is formed by a nurse call switch SW3 for incoming and outgoing nurse calls to other nurse call devices. In this case, the control data is transmitted to the control data receiving circuit 7 in the cordless parent machines MQ1 to MQn.
a, a control data transmission circuit 7b is used, and in the main device PQ, a main device control data transmission circuit 15a, a main device control data reception circuit 15b, a main device-to-nurse call control data reception circuit 16b, and a main device-to-nurse call The control data transmission circuit 16a is used. Also, a first station line connection switch SW4 and a second station line connection switch SW5
Instead, the nurse call line connection switch SW6 operates.

The number of downlink radio waves and uplink radio waves in the above embodiment is not limited to six channels. Further, the various switches SW1 to SW6 may be constituted by solid-state elements.

[0027]

As is clear from the above description, according to the nurse call cordless telephone communication apparatus of the present invention, the number of office lines is two.
An external line between the cordless parent device and the cordless child device can be transmitted and received by the main device provided with lines or more.

[Brief description of the drawings]

FIG. 1 is a system diagram showing an embodiment of a cordless telephone device according to the present invention.

FIG. 2 is a block diagram showing one embodiment of a cordless communication device according to the present invention.

FIG. 3 is a block diagram showing an embodiment of a cordless telephone device according to the present invention.

FIG. 4 is a system diagram of a conventional cordless telephone device.

[Explanation of symbols]

18 RAM for storing the electric field strength of the upstream radio wave (means for determining the maximum electric field strength) 19 ROM for storing the polling data (the storing means for the order of transmitting the downstream radio waves) 32 radio reception Circuit 36: Ringer MQ1, MQ2 to MQn: Cordless parent unit SQ1, SQ2 to SQm: Cordless child unit SW1: Switch for first extension ( SW2: Switch for second extension (communication path forming means) SW3: Switch for nurse call (communication path forming means) PQ: Main device L1 , L2... First and second extension bus cables L3... Nurse call bus cable L4... Control data bus cable L5. Local line L6 ... 2nd local line L7 ...・ ・ ・ Down nurse call line L8 ・ ・ ・ ・ ・ ・ Up nurse call line fs ・ ・ ・ ・ ・ ・ Down radio wave fr ・ ・ ・ ・ ・ ・ Up radio wave

Claims (1)

(57) [Claims] 1. A first and second station line (L5, L6) , a downstream station
Squall line (L7), Nurse call line (L
8) and first and second extension bus cables (L1, L2) corresponding to the first and second office lines .
L2), corresponding to the down and up nurse call lines
Nurse call bus cable (L3)
Bus cable for control data for nurse call (L
In 4), a plurality of cordless master units (MQ1, MQ2 to MQn) connected in parallel with the main unit, a down radio wave (fs) radiated from the plurality of cordless master units, and an up radio wave (fr) ), And a plurality of cordless handsets (SQ1, SQ2 to SQm) for transmitting down-link radio wave transmission order storage means (19);
Maximum field strength determining means (18) for determining the cordless base unit which has received the maximum electric field strength outgoing radio wave among a plurality of source cordless base units which radiated the downstream radio wave according to the downstream radio wave transmission order storage means. The plurality of cordless base units have communication path forming means (SW1, SW1) for forming a communication path between a source cordless handset transmitting the upstream radio wave and a destination cordless base unit having the maximum electric field strength of the upstream radio wave. SW2, SW3), wherein the plurality of cordless handsets are provided with a radio receiving circuit (32) for receiving downlink radio waves, and a ringer (36) that operates in response to a call by the radio receiving circuit. Nurse call cordless communication device.