JPH0358533A - Power control system for television relay broadcast equipment - Google Patents

Abstract

PURPOSE:To preclude the possibility of interruption of television relay when a contact for power supply is faulty by incorporating the contact for power supply to its own equipment by the control of a switching controller to plural broadcast equipments respectively. CONSTITUTION:A contact 15a and a relay 15b for power supply reception by a power supply circuit 17 are incorporated in a broadcast equipment 22 and similarly a contact 16a and a relay 16b for power supply reception by a power supply circuit 18 are incorporated in a broadcast equipment 23. Moreover, a switching controller 24 is constituted only of a control section 19. When the broadcast equipment 22 is switched into the broadcast equipment 23 because of a fault of, e.g. the contact 15, the contact 15a incorporated in the broadcast equipment 22 is replaced by a coaxial switch 21a is selected to the position of the broadcast equipment 23. Thus, even when the enclosure of the broadcast equipment 23 is opened, no effect is imposed on the television relay and the possibility of interruption is precluded.

Description

[Detailed Description of the Invention] [Summary] Regarding the power source III method of a television relay broadcaster that controls the power switching of a plurality of broadcasters, a broadcaster that operates when a contact that supplies power fails. The purpose of this method is to switch the power supply of multiple broadcasting equipment without increasing the cost of broadcasting and without worrying about the center of the television broadcast.
In the power supply system for a television relay broadcaster, which performs switching control using a 2Il device, it supplies power to a broadcaster that is always in operation and relays received television broadcasting signals. [Industrial Application] The present invention enables television relay broadcasting. The present invention relates to a power supply control system for a television relay broadcasting machine that controls power supply switching of a plurality of broadcasting machines.

Broadcasting to eliminate the wide viewing area of television broadcasting]
There is an Alevi relay broadcaster that receives the T signal, performs frequency conversion and amplification, and then broadcasts it to the area where it is installed1.In such an I Levi relay broadcaster, two broadcasters B1 are prepared and one broadcaster is used. When one of the broadcasters breaks down, it switches over to another broadcaster and broadcasts the TV relay, ensuring reliability of 11.

(Conventional technology) FIG. 2 shows a block diagram of an example of a conventional method.

In the figure, the signal is received by the receiving antenna 10, and the signal is received by the input filter 1.
The television broadcasting station g selected in step 1 is broadcaster 12.1.
3 each. Broadcasting equipment 12, 13 {ma] - This is a device that converts the frequency of the recording, receiving and broadcasting bows, amplifies them and outputs them. '. from power supply circuits 17 and 18 respectively. fi source.

When using the broadcaster 12 preferentially, the contact 15a becomes conductive and the broadcast F312 is angularly moved, and the detection signal 8 of the broadcasting bow output from the broadcaster 12 is transmitted to the switch control III device 171 by 1 lawn 1. The control unit 19 controls the relay 15b to conduct the contact 15a, controls the relay 16b to disconnect the contact 16a,
Furthermore, control the relay 2lb-C I2] Hakukiri Summon: S
2 1 a @fr1 sending practice 12th measurement followed by 1a.

To this, J, the output of the transmitter 12 is broadcast {1, j
3 is sent from the Antef 22 through the L, 7J converter 21a.

The control unit 1 broadcasts, and when the detection signal from 112 becomes 111 and a, it is determined that the broadcaster 12 is malfunctioning, and the contact 16
A is made conductive to operate the broadcaster 13, and at the same time, the contact 15a is cut off and the coaxial switch 21a is connected to the transmitter 113 side. Sending 1. is done,, [The problem that Masaaki solved and is still thinking about] In the conventional h-type (I,'J I'Th system, 1g points 15a, 16a and relays 15b, 16b are installed in 1/I. {ノ、Radiation j.Z t312.13 of the power supply 1、
7J change to 11, 1 k feed 1'l 12, 13 switching function to 11 徨II: W 1 4 (L in progress).

Here, contact 15a. Since 16a is a mechanical contact, it has a higher failure rate than other electric f circuits. For example, if the broadcaster 12 is switched to the broadcaster 13 due to a failure in the contact 15a, the contact 15a must be replaced. It is necessary to be able to listen to the switching system l2I]:1 to 4, which creates a problem in that there is a possibility that the control unit 19 that is in operation may be affected and the relay broadcast may be interrupted. there were.

The present invention {in view of the above points/. It was turned on, so I turned off the power.
Power source 1, II for television relay broadcasting equipment that does not cause interruption of television relay broadcasting without incurring any shadow costs to the operating broadcasting equipment when the contact that connects the power supply to fj breaks down.
The purpose is to provide the i20 system, [1,000 steps to solve the problem] A power control system for the Alevision relay broadcasting of the present invention (the power supply of multiple TLI transmitters is switched by a switching control band). By controlling f1, alevision relay broadcasting {1's power supply control} which supplies power to the broadcasting machine that is always in operation, and relays the received TV remote control broadcasting bow.
In 'J type, multiple broadcasters can be switched to L'l 1211
Each of the contacts for supplying power to the own crosspiece is built-in.

[Effect]

In the Mokumaki method, {well, since the contacts that supply power to each broadcaster are built into each broadcaster, if one contact for power supply to any broadcaster fails, it will be used by another broadcaster. After switching to relay broadcasting, when replacing the faulty contact, middle broadcasting was completed without making any changes to the switching controller.
It's a damaged broadcasting machine (you just need to modify J, it won't affect the broadcasting machine that is performing relay broadcasting, and there will be no interruption of TV broadcasting).

[Embodiment] FIG. 1 shows a block opening according to an embodiment of the present invention. In the figure, the same numbers as those in FIG. 2 are used, and the explanation thereof will be omitted.

In FIG. 1, broadcasters 22 and 23 correspond to broadcasters 12 and 13, respectively. The broadcasting device 22 has a power supply circuit 17.
A contact 15a and a relay 15b for receiving power supply are built-in, and the broadcasting device 23 also has a power supply circuit 1.
A contact 16a and a relay 16b for receiving power supply from 8 are built-in. In addition, the switching control device 24 is
It is made up of only 19 members of the I group.

Here, the switching controller 24 selects whether the allevision broadcast signal is received f.
If not, relay 15b. 16b to C to open contacts 15a. 16a is made conductive to supply power from the power supply circuits 17 and 18 to each of the broadcasting machines 22 and 23, respectively, and the broadcasting machines 5l and 22 and 23 are operated to receive and receive incoming television broadcast signals.

When the television broadcast signal g is received and supplied to the broadcasters 22 and 23, if the broadcaster 22 is to be used with priority,
A detected signal of the transmission output is supplied from the broadcasting device 22 to the control section 19 . As a result, the control unit 19 (maintains the conduction of the contact 15a) contacts 16a4!-!fIi, connects the coaxial switch 21a to the broadcasting device 22 side, and disconnects the broadcasting bow output from the broadcasting device 22. It is transmitted from the i-na 20.

After this, when the detection signal {ji g of the transmission output from the broadcaster 22 is no longer supplied, the υ1 control unit 19 makes the contact 16a conductive to turn the broadcaster 23 on and off, and the detected signal 8 is supplied from the broadcaster 23. Then, the contacts 15a4i:m are disconnected to stop the broadcaster 122 from working, and the coaxial 9 switch 21a is connected to the broadcaster 23 side, so that the output broadcast signal of the broadcast I122 is transmitted from the antenna 20. Zareru... For example, if the broadcaster 22 is switched to the broadcaster 23 due to a failure in the contact 15a, the contact 15a built into the broadcaster 22 must be replaced. , Since the coaxial switch 21a has already been switched to the broadcaster 23 side at this time, even if the housing of the broadcaster 22 is opened, the television relay will not be affected in any way and there is no risk of interruption.

〔Effect of the invention〕

As described above, according to the power control method of the television relay broadcasting machine of the present invention, when a contact point for supplying power fails, it does not affect the broadcasting machine operating the relay broadcasting, and the television broadcasting is interrupted. J3 does not have that, and is extremely useful in practice.

4. Drawing l! i! I1 Description FIG. 1 is a block diagram of an embodiment of the method of the present invention, and FIG. 2 is a block diagram of an example of the conventional method.

In the figure, 15a, 16a. 21at contact point, 15b, 16b, 21b are relays 19 is a control unit; 22.23 is a broadcasting machine, 24 is l. 7l conversion lil device shows.

No. 1 figure

Claims (1)

[Claims] A controller (24) that switches the power of multiple broadcasters (22, 23)
), the power supply control system for a television relay broadcaster performs switching control by supplying power to a normally operating broadcaster to operate it and relaying the received television broadcast signals. A power control system for a television relay broadcasting machine, characterized in that each of the machines (22, 23) has a built-in contact (15a, 16a) for supplying power to the machine under control of the switching controller (24).