JPS63233622A - Private paging system - Google Patents

Abstract

PURPOSE:To surely transmit a message, etc., and also a large amount of information to a slave station in a short time, by storing the message to be transmitted to a prescribed slave station in advance after converting it to a voice digital signal at a distributed master station, and transmitting the message after modulating to a master station center via a telephone line and a PBX. CONSTITUTION:The message, etc., to be transmitted to the prescribed slave station 4 is transmitted from a prescribed distributed master station 1 to the master station center 2 by an individual message transmitter 5, and is stored in a storage part 2b. And the control part 2a of the master station center 2 transmits an operation start signal first to private distributed master stations 11,..., 1n via the PBX3, and when receiving response signals from the distributed master stations 11,..., 1n, transmits the message to the distributed master stations 11,..., 1n simultaneously or in order. The message is the one inputted by the registration number and the operator of the slave station. Thus, each of the distributed master stations 11,..., 1n issues the message, etc., on a weak wave by a transmitter 1d.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a local paging system, and more particularly to a local paging system capable of transmitting sufficient messages and the like to a predetermined slave station.

[Conventional example] Conventionally, in this local paging system, a predetermined slave station is called by operating a button on a telephone or a dedicated console provided at a master station.

That is, the master station transmits a signal based on button operations on a telephone or console to the slave station using a transmitter, for example, at a predetermined frequency. on the other hand.

The slave station is equipped with a receiver that receives the predetermined frequency signal, and operates a buzzer or the like based on the signal to notify that there is a call.

Furthermore, some similar systems are capable of transmitting a small number of messages, etc. to slave stations using a combination of push buttons on a telephone or buttons on a dedicated console.

[Problems to be Solved by the Invention] However, in the local paging system as described above, when making a call to a slave station.

Not only is it troublesome to have to operate the button and operation button, but it is also troublesome for the slave station each time.
Use your phone to contact the master station.

There was the annoyance of having to receive messages, etc.

Further, in a system that can transmit a message, etc. by a combination of the operation buttons, there is a problem that not only is it cumbersome to operate the buttons for the combination, but also it takes time and effort to set the message, etc. to be transmitted.

Furthermore, the number of messages that can be transmitted is small and sufficient information cannot be conveyed, that is, there is a problem that the efficiency of transmission is poor.

The present invention has been made in view of the above problems, and its purpose is to provide a local paging system that can more efficiently transmit messages and the like to a predetermined slave station.

[Means for Solving the Problems] In order to achieve the above object, the present invention has a plurality of distributed master stations connected to a master station center via local telephone lines, and a plurality of slave stations can be accessed from the distributed master station. In a local paging system that transmits a predetermined signal using weak radio waves to a predetermined slave station among the plurality of slave stations, a voice input such as a message to be transmitted to a predetermined slave station among the plurality of slave stations is converted into a digital signal, and the digital signal is converted into a digital signal. A message transmitter that modulates and outputs the modulated signal is provided, and the master station center includes a demodulation circuit that demodulates the modulated digital signal, and the message is input to the message transmitter and converted into a digital signal. , the digital signal is transmitted from the telephone of the distributed master station to the master station center over a telephone line, and the message etc. of the digital signal is transmitted from the master station center to each of the plurality of distributed master stations over the telephone line. , the transmitted message, etc. is placed on weak radio waves at each of the distributed master stations and transmitted to the plurality of slave stations.

[Example〕 Embodiments of the present invention will be described below based on the drawings.

In the figure, numeral 1 indicates distributed master stations located at n locations within the premises, and these distributed master stations 11. ..., 1nit master station center 2 and P B X (private branch
axchange) 3. As shown in FIG. 2, these distributed master stations 1□,...
, 1n have slave stations 41 . . . ., a telephone set l into which a digital signal of a message is inputted from an individual message transmitter 5 in order to transmit a message etc. to a predetermined slave station within 4 m.
a. An individual message transmitter 5 equipped with a control unit 1b that controls the transmission of the voice digital signal to the master station center 2 via an in-house telephone line transmits messages etc. in voice form as shown in FIG. An input microphone 5a, an automatic level adjustment section 5b that adjusts the level etc. of the audio signal input to the microphone 5a, and B that divides the level-adjusted audio signal into a plurality of, for example, four audio frequency regions.
P F (band-pass filter) circuit 5
C, and the same number of A/D converters 5d that convert the audio signals in the frequency band that have passed through the BPF circuit 5c into digital signals, and the signals in the plurality of regions that have been converted into digital signals are totaled.

When the digital signal of the aggregated voice and the voice signal of the operator (message sender) stored in advance in the storage unit 5e are matched, the storage unit 5e
A control unit (CPU) 5f outputs a digital signal of the message stored in the storage unit 5e when the transmission start switch of the individual message transmitter 5 is turned on; FSK (frequ
modulator 5
g, and a speaker device 5h that outputs a modulated digital signal in the form of sound vibrations. In this embodiment, the BPF 5c is divided into four frequency bands, but regardless of this, it can be divided into many more frequency bands.

Speech recognition can be made easier. On the other hand, the master station center 2 includes an FSX demosimulator 2a that demodulates the modulated digital signal outputted from the individual message transmitter 5 via the telephone set 1a, and a demodulated voice digital signal is sent to each distributed master station 11 through a telephone line. . . , 1n is provided with a control unit 2c that inputs the information to the telephone 1a and stores it in the storage unit 2b. Also.

The distributed master stations 1□, . . . , 1n include a storage unit 1c for storing audio digital signals such as messages transmitted from the master station center 2, and a transmitter for transmitting the messages etc. to the slave station 4 using weak radio waves. Machine 1d and slave station 4 that received the weak radio wave
A receiver 1e is provided to receive an answerback signal of weak radio waves emitted from the receiver. On the other hand, slave station 4□,
...to 4m.

As shown in FIG. 4, each distributed master station 178. ....

A receiver 4a that receives weak radio waves from 1n, and an LED 4b that serves as a notification device to notify the reception.

and a display section 4c, for example, made up of an LCD, etc., for displaying messages received from the distributed master station 1, and the like.

A storage unit 4d that stores signals such as messages, and a distributed master station that transmits answer-back signals]-11...,
a transmitter 4e that uses weak radio waves to notify the distributed master station that it has received all digital signals such as messages from 1n;
A control section 4f that controls these is provided. The slave stations 4□, . . . , 4m may be integrally equipped with the individual message transmitter 5.

Next, the operation of the in-house paging system having the above configuration will be explained.

First, a case in which an operator transmits a message or the like to one, for example, a slave station 11 using an individual message transmitter 5 in one distributed master station 1n will be described. When the operator inputs a predetermined message by voice through the microphone 5a of the individual message transmitter 5, the BPF circuit 5c and A/D
The audio digital signal obtained by the converter 5d is stored in the storage unit 5.
It is stored in e. Thereafter, after confirming the message etc. input by the operator, the individual message transmitter 5 is set on the telephone 1a of the distributed master station 1n, the telephone 1a and the master station center 2 are placed in a communication state, and the individual message transmitter 5
Turn on the transmission start switch. Then, the digital message of the voice such as the message stored in the storage unit 5e is modulated by the FSX modulator 5g from the individual message transmitter 115, and is transmitted to the FSX demosimulator 2a of the master station center 2 via the telephone line and PBX 3. demodulated.

That is, when transmitting a message etc. to a predetermined slave station, the message etc. is stored in the form of a digital signal in the individual message transmitter 5, and after confirming the stored message etc., the digital signal is FSX modulated and transmitted. Since the message is transmitted to the master station center 2, a large number of messages etc. can be easily transmitted in a short time and reliably. In this case, since the individual message transmitter 5 recognizes only the voice of a specific speaker, the error rate in voice recognition is low and the circuit configuration is simple.

In this way, messages and the like transmitted from a predetermined distributed master station 1 to a predetermined slave station 4 by the individual message transmitter 5 are transmitted to the master station center 2 and stored in its storage section 2b. Then, the control unit 2a of the master station center 2 first sends an operation start signal to each distributed master station 11 in the premises via the PBX 3.・・・
. . , 1n, and upon receiving response signals from the distributed master stations 1□, . These messages are the registration number of the slave station, the message input by the operator, etc. Then, each distributed master station 1□,...
1n transmits the above message etc. on weak radio waves from transmitter 1d. This weak radio wave is received by the receiver 4a of each slave station 4□, . This message etc. is sent to each slave station 4□,・
. . , the control unit 4f of 4m determines whether or not it is directed to the slave station itself.

Then, the control section 4f of the corresponding slave station stores the message etc. in the storage section 4. d and transmitter 4e.
transmits an answerback signal on a weak radio wave. This answer-back signal is received, for example, at the distributed master station 12 near the slave station 41, and transmitted from the distributed master station 1□ to the master station center 2 via the telephone line and PBX 3. On the other hand, on the slave station 4□ side, based on the message stored in the control unit 4f, the display unit 4c displays the telephone number of the telephone used to send the message, the registered name of the slave station, etc.
Messages etc. are displayed. Also, slave station 4□.

..., a speaker device may be used as the display at 4 m.

[Effects of the Invention] As explained above, according to the present invention, a distributed master station converts a message, etc. to be transmitted to a predetermined slave station into an audio digital signal and stores it in advance, and modulates the message, etc. Since the information is transmitted to the master station center via a telephone line or PBX, messages and the like can be reliably transmitted to the slave stations in a short period of time, and a large amount of information can be transmitted to the slave stations. Therefore, messages etc. can be efficiently transmitted to the slave stations.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the structure of a local paging system showing an embodiment of the present invention, FIG. 2 is a block diagram of the structure of a master station center and a distributed master station of the above-mentioned paging system, and FIG. FIG. 4 is a block diagram of the structure of the individual message transmitter used in the paging system. In the figure, 11. ..., 1n is a distributed master station, 1a is a telephone,
1b is a control unit, IC is a storage unit, 1d is a transmitter, 1e is a receiver, 2 is a master station center, and 2b is a storage unit. 2c is a control unit, 3 is a PBX, 41. −． 4m is a slave station, 4
a is a receiver, 4b is an LED, and 4C is a display unit. 4d is a storage section, 4e is a transmitter, 4f is a control section, 5 is an individual message transmitter, 5a is a microphone, 5b is an automatic level adjustment section, 5c is a BPF circuit, 5d is an A/D converter, 5e is a storage section , 5f is a control unit, 5g is an FSX modulator, and 5h is a speaker device.

Claims (1)

[Scope of Claims] A plurality of distributed master stations are connected to a master station center via in-house telephone lines, and a predetermined signal is transmitted from the distributed master station to a predetermined one of the plurality of slave stations using weak radio waves. A local paging system comprising: a message transmitter that converts a voice input such as a message to be transmitted to a predetermined slave station among the plurality of slave stations into a digital signal, modulates and outputs the digital signal;
The master station center includes a demodulation circuit that demodulates the modulated digital signal, inputs the message to the message transmitter, converts it into a digital signal, and transmits the digital signal from the telephone of the distributed master station to the telephone line. The message, etc. of the digital signal is transmitted from the master station center to each of the plurality of distributed master stations via a telephone line, and the transmitted message, etc. is transmitted to each of the distributed master stations. A local paging system characterized in that the information is transmitted to the plurality of slave stations by transmitting the information to the plurality of slave stations on weak radio waves.