JPH0799844B2 - Simple simultaneous broadcast method for photo information - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a simultaneous broadcast method for simultaneously receiving photographic information such as a news photo at a plurality of stations, and in particular, a general small-scale voice-only switch without a branch connection function. The present invention relates to a simple simultaneous broadcast method suitable for easily performing broadcast connection.

[Background of the Invention]

FIG. 1 shows a system configuration diagram illustrating a broadcast connection system in a special exchange having a conventional broadcast connection function. In FIG. 1, 1 is a general private line outgoing / incoming trunk having a connection interface function with another station (photo transmission destination) line, 2 is a special exchange having a broadcast connection function, 3 is an analog branch amplifier, and 4 is Photo receivers 5 are special leased line trunks for photo broadcasting which are connected to the partner station (broadcast destination) line.

With this configuration, in order to make a broadcast connection with the exchange 2, the trunk 1 receives the dial information from the photo transmission source, the control device (not shown) confirms that the broadcast connection is established, and the corresponding switch of the communication network is switched. While driving, the connection paths A and B to the analog branch amplifier 3 and the photo receiver 4 are set at the same time, and the trunk information is separately sent from the trunk 5 to the broadcast destination as connection information. , The other station is started.

Therefore, as the processing of the exchange, the processing of storing the broadcast destination number and expanding and transmitting it, and the speaker for monitoring or the receiver for receiving the in-band response signal from the partner station are used as the trunk 5
Built in or provided as a separate unit and requires processing to connect it through a communication path, etc., so that the circuit of the trunk 5 has an extra special function in connections other than broadcast connection,
In addition to being economically inconvenient, it was necessary to use complicated means for the replacement process.

[Object of the Invention]

An object of the present invention is to eliminate such inconveniences and to provide a simple simultaneous broadcasting method capable of easily carrying out a broadcasting connection in a general voice exchange using a general-purpose trunk without requiring special exchange processing.

[Outline of Invention]

For the above purpose, the present invention is based on dial information indicating a photo transmission request from a photo transmission source, and a photo receiver housed in the exchange is connected to the photo transmission source under the control of the exchange. In this state, after confirming the broadcast destination that requires broadcast by sending and receiving by voice between the photo receiver and the photo sender, from the photo transmitting telephone housed in the exchange with a plurality of lines, The call destination was called, and after waiting for all the responses to the call from each of the call destinations, the telephone was connected to the call line to the photo receiver via the analog branch amplifier. In this state, when the photo receiver instructs the photo sender to send a photo by voice, the photo information from the photo sender is received by the photo receiver, and at the same time, the analog branch amplifier, It is obtained so as to be broadcast to broadcast destinations each via a transmission phone.

Example of Invention

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. FIG. 2 is a system block diagram showing an embodiment of a simple simultaneous broadcasting method according to the present invention. In FIG. 2, 1A and 1B are general leased line trunks having a connection interface function with other stations (photo transmission destination, broadcast source), 2A is a general voice private branch exchange, and 3 is an analog branch as in FIG. The amplifier 4 is also a photographic receiver, and 5 is a photographic transmitting telephone provided in its own station according to the present invention.

Further, FIG. 3 is a schematic functional block diagram showing an embodiment of the telephone 5 for transmitting photographs shown in FIG. In FIG. 3, electronic keys (contacts) 1 to 0 are numerical center electronic keys (contacts) provided on the operation surface of this telephone, and P is the contents of the numerical sender electronic key identified by the control circuit CONT, which will be described later, to provide dial information. Impulse transmission relay transmitted to the exchange 2A, p is the relay contact, SR is the relay receiving the reception or connection completion signal of the partner station, sr is the relay contact, and M is the operation surface of the telephone with the numeric sender's key and the like. The transmitter T and the receiver R by receiving a signal from the control circuit CONT when the state of the call designating key (contact) M ₀ provided in
Is a relay for specifying a call for connecting to the call line, m is the relay contact, and TRA and TRB are the keys on the exchange side in response to the electronic keys (contacts) TR ₀ and TR ₁ for specifying the terminal equipment, which are also provided on the operation surface of the telephone A relay that extends the communication line to the analog branch amplifier 3 side of the rear terminal device, tra and trb are the relay contacts, L ₀ and L ₁ are the trunk lines of the communication line, L ₂ is the impedance matching line, and ANSD
ET is a detector that detects and holds a connection response signal (connection completion signal) with a different in-band frequency returned from the partner station for each connection destination, AL is a lamp that visually displays the reception detection result, and CONT is this It is a programmed control circuit that sets the state of the telephone in response to the operation key and the incoming call of the exchange.

With this configuration, when a photo transmission request is made from the photo transmission source of FIG. 2 via the trunk 1A, the exchange 2A analyzes the dial information and sets the empty photo receiver 4 of its own station within the communication network. Connect to the photo transmission source line through connection path A of. In this state, the photograph source and the photograph contents and other necessary connection confirmation items are communicated to each other by voice through the ordinary call line (not shown) of the photograph receiver 5. At this stage, if it is determined that the photo needs to be sent to the head office of another station, the response operator of the photo receiver 4 makes a call from the photo transmission telephone 6 in the same manner as a general connection and sends the broadcast number to Digital key (contact) for number sender in Fig. 3
Dial with ~ 0. This dial information is the control circuit CONT
Is transmitted to relay P in the form of an intermittent signal, and its contact point p
Then, the data is transferred to the exchange 2A shown in FIG. Then, the exchange 2A receives the activation and dial information in this form, but this is no different from the connection from a general telephone and there is no need to perform special processing under the condition that it is broadcast. Therefore the exchange
2A analyzes the received dial information and treats the trunk 1B on the opposite side as if it were a transfer call for another station to capture the broadcast trunk line.
To start the other station and transfer necessary dial information. Upon receiving this, the partner station captures and activates its own photo receiver, and returns a unique in-band frequency signal assigned to itself as a connection completion signal. This signal is detected by the detector ANSDET shown in FIG. 3 of the photo transmission telephone 6 and the corresponding lamp AL is turned on to confirm that the preparation for photo reception at the connection destination is completed. When there are a plurality of broadcast destinations for broadcast connection, the lamps AL provided for each connection destination are all turned on, thereby making it possible to know that all the connection destinations are ready for reception. In this way, after confirming that all the corresponding lamps AL are turned on, if the key TR ₀ or TR ₁ in FIG. 3 on the side to which the analog branch amplifier 3 in FIG. 2 is connected is operated, the relay TRA or TRB. Operates, and the contact line tra or trb switches the call line to the exchange side to the terminal device side for extension. As a result, the photographic transmitting telephone 6, the analog branch amplifier 3, and the photographic receiver 4 in FIG. 2 are connected to each other through the broadcast line and the communication line. Therefore, the photographic receiver 4 is not shown in this state. Send the picture sending instruction to the picture sending source through the calling circuit. In accordance with this instruction, the photo transmitter converts the photo into an analog electric signal by a photo transmitter (not shown) and transmits the analog electric signal. Therefore, the photo receiver 4 receives the photo, and at the same time, the analog branch amplifier 3 corrects the photo. The photo information is transferred to the broadcast destination through the transmission telephone 6 and the connection path B of the exchange 2A and the trunk 1B.

In this way, it is not necessary to provide a special trunk by distinguishing the line connection trunks of the photo transmission source and the broadcast destination, and it is not necessary to equip the exchange with the function of broadcast connection. It is possible to provide the broadcast connection function of, and it is possible to economically provide the broadcast connection function of a small station.

〔The invention's effect〕

As described above, according to the simple simultaneous broadcasting method of the present invention, a general voice exchange, which basically has a one-to-one relationship between the calling side and the calling side, is used, and the calling side and the calling side have a 1: N ratio. (N is a positive integer)
There is an effect that the broadcast connection of can be easily realized by the general processing procedure.

[Brief description of drawings]

FIG. 1 is a system block diagram showing a conventional broadcast connection system, FIG. 2 is a system block diagram showing an embodiment of a simple simultaneous broadcast method according to the present invention, and FIG. 3 is a photograph transmitting telephone of FIG. 3 is a schematic functional block diagram of FIG. 1A, 1B …… General leased line trunk, 2A …… General voice exchange, 3 …… Analog branch amplifier, 4 …… Photo receiver, 6 …… Photo transmission phone.

Claims (1)

[Claims] 1. A simple simultaneous broadcast method of photo information for simultaneously broadcasting photo information from a photo sender to one or more broadcast destinations through an existing exchange, the photo from the photo sender. Under the control of the exchange, the photo receiver housed in the exchange and the photo sender are connected to each other based on the dial information indicating the transmission request, and the photo receiver and the photo sender are connected to each other. After confirming the broadcast destinations that require the broadcast by voice transmission, the above-mentioned broadcast destinations are sequentially called from the photo-sending telephones accommodated in the exchange by a plurality of lines, and from each of the broadcast destinations. After waiting for all the responses to the ringing, the telephone is connected to the telephone line to the photo receiver via the analog branch amplifier, and the photo receiver sends a photo to the photo sender by voice. By being instructed, the photo information from photographic sources are received by the photo receiver at the same time,
A simple simultaneous broadcast method for photographic information that is sent to each broadcast destination via an analog branch amplifier and a telephone for transmitting photos.