JPH08107424A - Information transmission switching device for inside of broadcasting station - Google Patents

Abstract

PURPOSE: To facilitate a cable laying construction and to reduce a cable laying space by eliminating necessity to pull many cables for connecting an information generating source and the information supply destination while not centralizing them to one part. CONSTITUTION: Plural master stations MS1 and MS4 and slave stations SS2, SS3, SS5 and SS6 are distributedly arranged inside a broadcasting station house A, these stations are connected by using duplexed optical loop transmission lines OPa and OPb, and information transmitting terminals IT and information receiving terminals OT are connected to these respective stations for each of floors 1F, 2F and 3F. Then, the information transmitted from the information transmitting terminal IT is transmitted from the transmission side station through the optical loop transmission lines OPa and OPb to the reception side station and transferred from the reception side station to the information receiving terminal OT at the information supply destination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmission switch device used in a broadcasting station to selectively transmit information generated from a plurality of information sources to a plurality of locations in the station.

[0002]

2. Description of the Related Art In a broadcasting station, it is necessary to selectively transmit information generated from a plurality of information sources, such as news information, sports information, and weather information, to a plurality of information supply destinations such as studios and organization rooms. There is. Therefore, conventionally, by providing a transmission switch device having an analog matrix switch in a station and selectively connecting a transmission path between each information generation source and an information supply destination in this transmission switch device, each information The information generated from the generation source is transmitted to a desired information supply destination.

[0003]

However, such a conventional transmission switch device has the following problems to be improved. That is, a large number of cables to which the respective information sources and the respective information supply destinations are respectively connected must be drawn into the transmission switch device. Therefore, the cable laying work is extremely complicated around the transmission switch device, and a large laying space is required.

In recent years, broadcasting facilities such as information sources and communication lines in stations have been digitized. However, when the conventional transmission switch device using the analog matrix switch is used as described above, an additional circuit such as a digital-analog converter or an analog-digital converter is required, and the above digitized communication line or the like is used. It is difficult to secure compatibility with.

The present invention has been made in view of the above circumstances, and an object of the present invention is not to concentrate a large number of cables for connecting an information generating source and an information supplying destination in one place. Accordingly, it is an object of the present invention to provide an information transmission switch device in a broadcasting station capable of simplifying the cable laying work, reducing the laying space, and improving the affinity for digital information.

[0006]

In order to achieve the above object, the present invention selectively transmits information generated from a plurality of information generating sources to a plurality of information supply destinations by switching transmission lines respectively. In the information transmission switch device in the broadcasting station, the plurality of information generation sources and the plurality of information supply destinations are distributedly arranged in the broadcasting station with a plurality of stations selectively connected via a cable, and between these stations, A plurality of slots are connected in a loop by a loop transmission line in which a transmission frame in which time division multiplexing is performed is circularly transmitted, and a transmission path forming unit, an information transmitting interface unit, and an information receiving interface unit are provided to each of the plurality of stations. Are provided respectively. Then, the transmission path forming means transmits between the information generation source connected to the station and the information supply destination designated as the transmission destination of the information transmitted from the information generation source through the empty slot of the transmission frame. A path is formed, and in this state, the information sent from the information generating source is sent to the destination station via the transmission path by the information sending interface means, and at the same time, another station is sent via the transmission path. The information received from the information receiving interface means is received and transferred to the information supply destination.

[0007]

As a result, according to the present invention, the information transmitted from the information generating source is inserted into the empty slot of the transmission frame in the station on the transmitting side to which the information generating source is connected, so that the information is transmitted through the loop transmission line. Is transmitted to the destination station. Then, in the destination station, the above information is extracted from the transmission slot and transferred to the information supply destination. That is, information is distributed and transmitted using a loop multiplex transmission system.

According to this structure, the stations are distributed in the broadcasting station, and the information generating source and the information supplying destination are connected to these stations. Therefore, the information generating source and the information supplying destination are connected. Eliminates the need to pull multiple cables in one place. Therefore, the cable laying work can be simplified, and a large laying space can be eliminated.

Further, since the transmission / reception interface operation in the station and the transmission operation between the stations are all performed by digital processing, it becomes possible to transmit the information as a digital signal from the information generation source to the information supply destination. Therefore, digital-analog conversion processing, analog-digital conversion processing, etc. are not required, which eliminates the need for additional circuits and simplifies the circuit configuration. That is, the affinity for digital signals can be increased.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic block diagram showing an information transmission switch device according to an embodiment of the present invention. In FIG.
Is the station building of the broadcasting station, and each floor 1F, 2 of this building A
Studios, editing rooms, etc. are appropriately arranged on the F and 3F. In these rooms, a plurality of information transmitting terminals IT as information generating sources or a plurality of information receiving terminals OT for monitoring information are installed.

By the way, the information transmission switch device of this embodiment is constituted by an optical loop transmission system. That is, among the floors 1F, 2F, 3F, the top floor 3
Master stations MS1 and MS4 are provided in F, and slave stations SS2, SS5 and SS3, SS6 are provided in the other floors 2F and 1F, respectively. That is, a plurality of master stations and slave stations are dispersedly arranged on each floor in the station building A.

Between the master stations MS1 and MS4 and the slave stations SS2, SS5, SS3 and SS6, two optical loop transmission lines OPa and O using optical fiber cables are used.
It is connected by Pb. That is, the optical loop transmission line O
Pa and OPb are duplicated as a countermeasure against failure.

In the master stations MS1 and MS4, information transmitting terminals IT11 to IT1n and information receiving terminals OT41 to OT4m, which are respectively installed on the floor 3F, are coaxial cables CV.
1 and CV4. See also floor 2
In the slave stations SS2 and SS5 installed in F, the information transmitting terminals IT21 to IT2n and the information receiving terminals OT51 to OT5m respectively arranged on the floor 2F are connected by the coaxial cable C.
It is connected via V2 and CV5. Similarly, in the slave stations SS3 and SS6 installed on the floor 1F, information transmission terminals IT31 to IT3 installed on the floor 1F, respectively.
n and information receiving terminals OT61 to OT6m are connected via coaxial cables CV3 and CV6. That is, each information transmitting terminal IT and each information receiving terminal OT
Master station MS on floors 3F, 2F, 1F where self is located
1, MS4 or slave station SS2, SS5, SS3, SS6
It is connected to the.

The master stations MS1 and MS4 are preset so that one operates as an active station and the other operates as a standby station. The master stations MS1 and MS4 are connected to the operation management terminal CS via a coaxial cable. Are connected. The operation management terminal CS sends connection instruction information for instructing a connection between the information transmitting terminal IT and the information receiving terminal OT, which is keyed in by the operation administrator, to the master stations MS1 and MS4. For example, RS-232C is used as the connection interface in the master station of the operation management terminal CS.

FIG. 2 is a circuit block diagram showing the configuration of the master stations MS1 and MS4. That is, the master stations MS1 and M
S4 is a conversion unit 11, a frame transmission / reception unit 12, a frame generation unit 13, a line control interface unit 14,
The main controller 15 is provided.

The conversion unit 11 converts an optical signal from an optical signal of a transmission frame sent from an upstream station via the optical transmission lines OPa and OPb and supplies the electric signal to the frame transmission / reception unit 12 and also the frame transmission / reception unit. The transmission transmission frame output from 12 is converted from an electric signal into an optical signal and transmitted to the optical transmission lines OPa and OPb.

The frame transmission / reception unit 12 includes the conversion unit 11 described above.
The control information and the data information addressed to the own station are respectively extracted from the control information area and the data information area of the received transmission frame received in step S1, and the control information is notified to the main control unit 15, and the data information is transmitted to the line control interface unit. 1
Transfer to 4. In addition, the control information output from the main control unit 15 and the transmission data information transferred from the line control interface unit 14 are inserted into the empty slots of the control information area and the data information area of the transmission frame, respectively, and the conversion unit 11 is operated. Supply to. The transmission transmission frame is generated by the frame generator 13.

FIG. 4 is a diagram showing a format of the transmission frame. That is, in the transmission frame, the frame header FH is arranged at the head, and then the control information area, the line data slot and the data information area are arranged in order. In the data information area, a plurality of slots TS1 to TSk for transmitting data information are time-division multiplexed.

The line control interface unit 14 has a plurality of interfaces, and these interfaces are respectively connected to the information transmitting terminal IT via the coaxial cable CV.
Alternatively, the information receiving terminal OT is connected. Then, each interface performs an interface operation related to the transfer of data information between the information transmitting terminal IT or the information receiving terminal OT and the frame transmitting / receiving unit 12 according to the instruction of the main control unit 15.

The main control section 15 is provided with a microcomputer, for example, and has a connection instruction means and a transmission path formation control means as its control functions. The connection instruction means sends the connection control information to the standby master station and each slave station according to the connection instruction information notified from the operation management terminal CS. This connection control information is transmitted using the control information area in the transmission frame.

The transmission path formation control means secures an empty slot in the data information area of the transmission frame in accordance with the connection instruction information notified from the operation management terminal CS or the connection control information sent from the active master station. . Then, an instruction is given to the line control interface unit 14 to form a transmission path for transmitting the data information of the information transmitting terminal IT or the information receiving terminal OT connected to the own station by using the reserved empty slot. Let

On the other hand, FIG. 3 shows each of the slave stations SS2, SS3.
It is a circuit block diagram which shows the structure of SS5 and SS6. Each slave station SS2, SS3, SS5, SS6 has a conversion unit 21.
A frame transmission / reception unit 22, a line control interface unit 24, and a main control unit 25.

Of these, the frame transmitting / receiving unit 22 extracts the control information and the data information addressed to itself from the control information area and the data information area of the received transmission frame received by the converting unit 21, respectively, and controls the control information as the main control. It notifies the section 25 and transfers the data information to the line control interface section 24. The control information output from the main control unit 25 and the transmission data information transferred from the line control interface unit 24 are inserted into predetermined slots of the control information area and the data information area of the received transmission frame, respectively. It is supplied to the conversion unit 21.

The main control section 25 has a microcomputer and has a transmission path formation control means as its control function. The transmission path formation control means secures an empty slot in the data information area of the transmission frame according to the connection control information sent from the active master station. Then, an instruction is given to the line control interface unit 24, thereby forming a transmission path for transmitting the data information of the information transmitting terminal IT or the information receiving terminal OT connected to the local station by using the reserved empty slot. Let

The functions of the conversion unit 21 and the line control interface unit 24 are the same as those of the master stations MS1 and MS4 described above.
The conversion unit 21 and the line control interface unit 24 are the same.

Next, the operation of the apparatus configured as described above will be described. Prior to starting the operation, the operation manager uses the operation management terminal CS to key-in the connection instruction information. That is, the information of which information transmitting terminal IT is changed to which information receiving terminal O
Input information specifying whether to transmit to T. Then, this connection instruction information is transmitted from the operation management terminal CS to the master station MS.
1, transferred to MS4.

Now, suppose that the master station MS1 becomes the working station and the master station MS4.
Was set as the standby station. Then, when the connection instruction information is transferred, the active master station MS1 secures an empty slot in the control information area in the transmission frame, and secures the connection control information created based on the connection instruction information. The corresponding standby master station MS4 and each slave station SS2, SS3, SS5, SS6 using the slot
Send to.

The active master station MS1 secures an empty slot in the data information area in the transmission frame based on the connection instruction information. Then, these empty slots are connected to the information transmitting terminals IT11 to IT1 connected to the own station.
information transmission terminals IT11 to I
A T1n transmission path is formed.

On the other hand, the standby master station MS4 and each slave station SS2, SS3, SS5, SS6 operate as follows. That is, first, the respective slave stations SS2 and SS3 to which the information transmitting terminal IT is connected are respectively the active master station MS1.
When the connection control information addressed to the own station is transferred from, the empty slot is secured in the data information area in the received transmission frame based on this connection control information. Then, these empty slots are replaced by the information transmission terminals IT21 to IT21 connected to the own station.
By assigning to IT2n and IT31 to IT3n, information transmitting terminals IT21 to IT2n and IT31
~ Form a transmission path of IT3n.

On the other hand, the standby master station MS4 and the slave stations SS5 and SS6, to which the information receiving terminal OT is connected, receive the connection control information when the connection control information addressed to the own station is transferred from the active master station MS1. Based on this, in the data information area in the received transmission frame, an empty slot corresponding to the transmission path set by the active master station MS1 or the slave stations SS2, SS3 is captured. Then, the information receiving terminals OT41 to OT4m, OT51 connected to this station through this empty slot
.. to OT5m and OT61 to OT6m to form reception paths.

Thus, the information transmission terminals IT11 to IT
1n, IT21 to IT2n, IT31 to IT3n, and information receiving terminals OT41 to OT4m, OT51 to OT5
m, OT61 to OT6m, a transmission line using the transmission path and the reception path is formed.

Therefore, in this state, each information transmitting terminal I
T11-IT1n, IT21-IT2n, IT31-I
When T3n transmits information such as news information, weather information, sports information, etc., these information are transmitted to the parent station MS1 on the transmitting side.
It is also inserted in the transmission path in the slave stations SS2 and SS3, and is transmitted to the standby master station MS4 and the slave stations SS5 and SS6 on the receiving side via the active optical transmission line OPa. Then, the transmission information is extracted from the reception path in the standby master station MS4 and the slave stations SS5 and SS6, and thereafter, the information receiving terminals OT41 to OT4m, which are information supply destinations.
The data is transferred to OT51 to OT5m and OT61 to OT6m. Then, these pieces of transmission information correspond to the information receiving terminal OT4.
1-OT4m, OT51-OT5m, OT61-OT6
In m, it is displayed on the display, for example.

The information transmission terminals IT11 to IT1
n, IT21 to IT2n, IT31 to IT3n, and information receiving terminals OT41 to OT4m, OT51 to OT5m, O
The connection relationship of the transmission lines between T61 to OT6m is 1: 1
Can also be set to 1 to n (n = 2, 3, 4, ...)
It is also possible to set to.

Thus, in this embodiment, a plurality of master stations MS1 and MS4 and slave stations SS2 and SS are installed in the station A of the broadcasting station.
3, SS5, SS6 are arranged in a distributed manner, and these stations are connected to each other by using duplicated optical loop transmission lines OPa, OPb, and information transmission terminals IT11-IT1n, for each floor 1F, 2F, 3F are connected to each station. IT21-IT2n, IT3
1-IT3n and information receiving terminals OT41-OT4m,
OT51 to OT5m and OT61 to OT6m are connected. The information transmission terminals IT11 to IT1n, IT2
1 to IT2n, IT31 to IT3n, information transmitted from the transmitting station to the receiving station via the optical loop transmission lines OPa and OPb, and the receiving station receiving the information from the information receiving terminal OT41-OT4m, OT51-OT
5m, OT61 to OT6m.

Therefore, according to this embodiment, the information transmission terminals IT11 to IT1 are used by using the optical loop transmission system.
n, IT21 to IT2n, IT31 to IT3n and information receiving terminals OT41 to OT4m, OT51 to OT5m, OT
The transmission line for connecting between 61 to OT6m is switched. Therefore, the information transmission terminal IT
11-IT1n, IT21-IT2n, IT31-IT
3n and information receiving terminals OT41 to OT4m, OT51
It is not necessary to pull in a large number of coaxial cables CV for connecting to OT5m and OT61 to OT6m in one place,
This makes it possible to simplify the cable laying work and reduce the laying space.

Further, each of the master stations MS1 and MS4 and the slave station S
Since the transmission / reception interface operation in S2, SS3, SS5, SS6 and the data transmission between stations are all performed by digital processing, all the transmission lines from the information transmitting terminal to the information receiving terminal can be configured by digital transmission lines. Therefore, digital-analog conversion processing, analog-digital conversion processing, and the like are not necessary, which eliminates the need for an additional circuit and simplifies and downsizes the circuit configuration. That is, the affinity for digital signals can be increased.

Further, in this embodiment, the master stations MS1 and MS4
Since the optical loop transmission lines OPa and OPb are duplicated and switched to the standby side when a failure occurs on the working side, the reliability of the device can be improved.

The present invention is not limited to the above embodiment. For example, in the above embodiment, each floor 1F, 2
A transmitting station and a receiving station are provided for each of F and 3F, so that the cables of the information transmitting terminal and the information receiving terminal are connected to the station in units of floors 1F, 2F, and 3F. May be provided with a plurality of transmitting stations and receiving stations, and the cables of the information transmitting terminal and the information receiving terminal may be connected to the closer one of the plurality of stations.
By doing so, the cable laying work can be further simplified, and the laying space can be further reduced.

In the above embodiment, the information transmitting terminal and the information receiving terminal are connected to different stations. However, the information transmitting terminal and the information receiving terminal are mixedly connected to one station. May be.

The present invention also relates to the number and installation positions of stations, the number and configuration of information transmitting terminals and information receiving terminals, the type of information to be transmitted, the transmission path setting method in an optical loop transmission system, etc. Various modifications can be implemented without departing from the scope of the invention.

[0041]

As described in detail above, according to the present invention, a plurality of stations to which a plurality of information generating sources and a plurality of information supplying destinations are selectively connected via cables are dispersedly arranged in a broadcasting station, and The stations are connected in a loop by a loop transmission line in which a transmission frame in which a plurality of slots are time-division multiplexed are circularly transmitted, and a transmission path forming unit and an information transmission interface unit are provided to each of the plurality of stations. And information reception interface means. Then, the transmission path forming means transmits between the information generation source connected to the station and the information supply destination designated as the transmission destination of the information transmitted from the information generation source through the empty slot of the transmission frame. A path is formed, and in this state, the information sent from the information generating source is sent to the destination station via the transmission path by the information sending interface means, and at the same time, another station is sent via the transmission path. The information transmitted from the device is received by the information receiving interface means and transferred to the information supply destination.

Therefore, according to the present invention, it is not necessary to centrally pull in a large number of cables to which the information source and the information supply destination are connected at one place, thereby simplifying the cable laying work. Further, it is possible to provide an information transmission switch device in a broadcasting station that can reduce the installation space and enhance the affinity for digital information.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of equipment in a broadcasting station including an information transmission switch device according to an embodiment of the present invention.

FIG. 2 is a circuit block diagram showing a configuration of a master station shown in FIG.

FIG. 3 is a circuit block diagram showing a configuration of a slave station shown in FIG.

FIG. 4 is a diagram showing a format of a transmission frame.

[Explanation of symbols]

MS1, MS2 ... Master station SS2, SS3, SS5, SS6 ... Slave station OPa, OPb ... Optical loop transmission line CS ... Operation management terminal IT11-IT1n, IT21-IT2n, IT31-
IT3n ... Information transmission terminals OT41 to OT4m, OT51 to OT5m, OT61 to
OT6m ... Information receiving terminals CV1 to CV6 ... Coaxial cables 11, 21 ... Conversion unit 12, 22 ... Frame transmission / reception unit 13 ... Frame generation unit 14, 24 ... Line control interface unit 15, 25 ... Main control unit

Claims (2)

[Claims] 1. An information transmission switch device in a broadcasting station for selectively transmitting information generated from a plurality of information generating sources to a plurality of information supply destinations by switching respective transmission paths, the information transmission switching devices being distributed and arranged in the broadcasting station. , A plurality of stations to which the plurality of information sources and a plurality of information destinations are selectively connected via cables, and a transmission frame in which a plurality of slots are connected in a loop and a plurality of slots are time-division multiplexed. And a loop transmission line for circular transmission, wherein each of the plurality of stations has a connected information source and an information supply destination designated as a transmission destination of information transmitted from the information generation source. In between, a transmission path forming means for forming a transmission path through an empty slot of the transmission frame, and the information transmission source. Information transmitting interface means for transmitting information to a destination station via the transmission path formed by the transmission path forming means, and receiving information transmitted from another station via the transmission path. An information transmission switch device in a broadcasting station, comprising: an information reception interface means for transferring to an information supply destination. 2. The information transmission switch device in a broadcasting station according to claim 1, wherein the loop transmission line is duplicated.