JPS62289043A - Mutual simultaneous communication equipment by voice multiplex system - Google Patents

Abstract

PURPOSE:To save the installation cost for a transmission line between equipments by using a coaxial cable, a parallel vinyl electric wire pair or an optical fiber cable for the transmission line and using a multiplexing signal of frequency modulation wave for voice. CONSTITUTION:In keying the key of a station 1 and the key for station 2 of an operation section 1, the oscillated signal of a transmitter 3 is modulated into an address code carrier signal for the station 2 and sent through a coaxial cable 6 via a matching device 5. since a receiver for the station 1 of a receiver group 4 is in standby by scanning in the station 2, an address code carrier signal for the station 2 is received to stop the scanning, thereby forming a reception circuit and the line is connected to a speaker 8. In keyiing the key and a reply key for the station 1 of the operation section 1, the address code carrier signal for the station 1 is sent to the cable 6 and the receiver group 4 of the station 1 stops the scanning of the receiver for the station 2 thereby forming a talking circuit.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention The present invention provides a voice multiplex intercommunication device in which, in the conventional system, as devices are multiplexed, transmission paths between devices must be provided for the number of multiplexed devices. . This not only increases the cost of a large number of transmission lines and their Hx connections, but also poses problems in maintenance and handling of cable breakage accidents. This device solves all of these problems all at once, using a single coaxial cable or a pair of parallel vinyl wires and a single optical fiber cable for the transmission path.

Next, one embodiment of the present device will be explained with reference to a system diagram.

A [When receiving/receiving] (1) Receivers 1 to n of the receiver group (4) of stations 1 to n are scanning and waiting for a call from an arbitrary station.

B [When calling 2 stations from 1 station] ■ When the key for 1 station and the key for 2 stations on the operation unit (1) are turned down, the oscillation signal from the transmitter (3) is sent to the logic circuit (2), 2
The address code for the station is modulated into the carrier wave signal, and the matching unit (5
) is carried out to a coaxial cable or a pair of parallel vinyl electric wires or an optical fiber cable (6), and at the same time a receiver for one station of a two-station receiver group (4) is called, an indication that a call has been received from one station is sent. The indicator light (9) for one station will blink. On the other hand, keys other than 2 stations and call display for 1 station on the operation section (1)! (9) is lit to notify each station that one station is busy.

■ At the 2nd station, the 1st station receiver of the receiver group (4) is scanning and waiting, so by receiving the 2nd address code carrier signal, it stops scanning and turns on the reception circuit. configured and connected to the speaker (8).

■ By receiving one station (microphone of one station)
When the voice call (7) key and the one-station response key (calling key) of the operation unit (1) are turned down, the transmitter (3) operates and transmits the one-horse address code through the logic circuit (2). It is modulated into a signal and sent through a matching box (5) to a coaxial cable, a pair of parallel vinyl electric wires, and an optical fiber cable (6), and one station receives 1 fil! ¥<4) is 2
Skipping of the receiver for the station is stopped, a communication circuit is constructed through the speaker (8) of one station, and the communication network between the first station and the second station is completed and a call can be made. On the other hand, in order to inform the other station that two stations are busy, the two-station call indicator light (9) on the key and operation section (1) of the other station is turned on.

■ Reception 1 for each of the 1-station and 2-station receiver groups (4)
11. Received! When 512 stops scanning, the receivers for other stations each start scanning and enter a special state for calls from other stations.

C [When station 3 interrupts the call while station 1 and station 2 are talking] ■ When station 3 knocks down the call key for station 1 on the key and operation section (1), station 1's receiver group (station 4 ) stops scanning, forms a receiving circuit with the three stations, and causes the key of one station and the three-station call indicator light (9) on the operation unit (1) to blink.The three stations are one station. is called by voice through the microphone (7). On the other hand, turn on the 3-station call indicator light (9) of the other station,
Notify other stations that 3 stations are busy.

■ At one station, when the response key (3 station call key) of the key and operation section (1) is turned down, the sound from the microphone (7) of one station is added to the transmitter (3), so the receiver group of the three stations (4
) enters the receiving state, and communication circuits for stations 1 and 2 and stations 1 and 3 are configured.

Thereafter, the communication circuits of the 1:n, n:1 and nun stations are constructed in the same manner.

As described above, the present invention provides the following advantages:
By converting the voice address code into a signal carrier wave, it is theoretically possible to construct an almost infinite communication line network, which reduces construction costs for transmission lines between devices.

[Brief explanation of drawings]

(1) is the key and operation part; (2) is the logic circuit; (3) is the transmitter; (4) is the receiver group (5) is the matching device; (6) is a single coaxial cable or parallel vinyl The transmission line (7), such as a pair of cable wires or optical fiber cable, is the microphone (8), and the speaker (9) is the call indicator light.

Claims (1)

[Claims] This device uses a single coaxial cable, a pair of parallel vinyl electric wires, and a single optical fiber cable as the transmission line, converting and transmitting audio as a multiplexed signal of frequency modulated waves, and controlling the audio and call indicator light. The method is characterized in that simultaneous calls are n-multiple mutual calls, and calls are controlled 1:n, n:1, and n:n.