JPH05129977A - Television signal mixing re-transmission unit - Google Patents

Abstract

PURPOSE:To allow plural satellite broadcast incompatible receivers to attain viewing with one tuner or receiver by connecting a BS tuner or a satellite broadcast compatible receiver to a ground satellite common use 2nd terminal via a mixer. CONSTITUTION:An outdoor satellite broadcast reception system 1 connects to a BS input terminal 3 of a unit 19 and a ground broadcast reception system 4 connects to a VU input terminal 5. Moreover, a ground satellite common 2nd terminal 11 connects to a BS tuner 8 or a satellite broadcast compatible receiver 25 via a mixer 24, and a common 1st terminal 10 connects to a satellite broadcast incompatible receiver 9. Thus, When a satellite broadcast is viewed by the tuner 8 or the receiver 25, an AV signal demodulated by the tuner 8 or the receiver 25 is inputted to the receiver 9 via a 2-way distributer 7. Thus, the satellite broadcast is viewed by the plural satellite broadcast incompatible receivers 9 by using the tuner 8 or the receiver 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to terrestrial television broadcasting using VHF waves or UHF waves (hereinafter referred to as terrestrial broadcasting) and SHF wave broadcasting using satellites (hereinafter referred to as satellite broadcasting).
The present invention relates to a television signal mixing / retransmission unit used when viewing both of them on a plurality of image receiving devices (including a television receiver, a video recorder and the like).

[0002]

2. Description of the Related Art Conventionally, as shown in FIG.
VHF for receiving terrestrial broadcasting outdoors, as shown in
The antenna 12 and the UHF antenna 13 are set up, the signals of both antennas 12 and 13 are combined into one by the mixer 14, and the terrestrial broadcast receiving system 4 for pulling indoors from the mixer 14 to the inside with one cable 15 is provided. Is connected to a plurality of image receiving devices 9 and 25 via an indoor distributor 16. Also,
Satellite dish 17 for satellite broadcasting (BS broadcasting) outdoors
Install a special cable 1 from the parabolic antenna 17
The satellite broadcast receiving system 1 for pulling indoors at 8 is provided, and the cable 1
8 is connected to a BS tuner 8 or a satellite broadcasting compatible image receiving device 25 with a built-in BS tuner.

It is not uncommon for ordinary households to use several image receiving devices 9 and 25, but BS
The penetration rate of the tuner 8 and the satellite broadcasting compatible image receiving device 25 is not yet high, and only one BS tuner 8 is installed in a specific place.
In many cases, an image receiving device 25 compatible with satellite broadcasting was installed and connected to the satellite broadcasting receiving system 1, and an image receiving device 9 not compatible with satellite broadcasting where satellite broadcasting could not be seen as it is was installed in other places. ..

[0004]

In the conventional television broadcast receiving system configured as described above, when an attempt is made to view satellite broadcast not only in a specific place but also in another place, the image receiving device is adapted to the satellite broadcast compatible type. In addition to having to buy another or buy a BS tuner, there are problems that the system deployment is complicated and the cost is high, such as installing a distributor for satellite broadcasting and newly arranging a cable indoors. It was

Also, CS broadcasting (a type of satellite broadcasting, which is a type of satellite broadcasting that is scheduled to be realized in the near future, broadcasts scrambled SHF broadcasting using satellites and lends a decoder for descrambling to subscribers, so-called scrambled TV. )
When the station opens, you can watch the existing B
Since the satellite orbit is different from that of S-broadcast, a parabola antenna must be newly installed, and of course, there is a drawback that the system needs to be redone by newly wiring in order to pull the received radio wave into the room.

The present invention has been made to solve the above-mentioned problems, and if there is one BS tuner or satellite broadcasting compatible image receiving device, the other image receiving device is replaced with a satellite broadcasting compatible type. It is an object of the present invention to provide a television signal mixing / retransmission unit that does not require troublesome system development, can watch satellite broadcasting on other image receiving devices, and can easily support CS broadcasting.

[0007]

A television signal mixing / retransmission unit according to the present invention for achieving the above object comprises a CS input terminal and a BS for connecting one of two satellite broadcasting receiving systems installed outdoors. An input terminal and a VU input terminal for connecting a terrestrial broadcasting reception system installed outdoors,
A mixer that mixes signals from each input terminal, a bidirectional distributor that is connected to the output side of the mixer, and a ground satellite common first terminal that is connected from the bidirectional distributor to an image receiving device that does not support satellite broadcasting, It is characterized by comprising a terrestrial satellite common second terminal for connecting the bidirectional distributor to the BS tuner or the satellite broadcasting compatible image receiving device.

[0008]

In the television signal mixing / retransmission unit according to the present invention, a bidirectional distributor is used, and a BS tuner or a satellite broadcasting-compatible image receiving device is connected to the terrestrial satellite common second terminal through the mixer, whereby the BS tuner is connected. The AV signal output demodulated with or reproduced by video (image receiving device) is sent from the mixer to another image receiving device that does not support satellite broadcasting through the terrestrial satellite common second terminal, bidirectional distributor, and terrestrial broadcasting terminal. You can do it.

As the input terminal for connecting the satellite broadcasting receiving system, the CS input terminal is previously attached in addition to the BS input terminal. Therefore, when the CS broadcasting is opened, the parabolic antenna and the unit of the present invention are provided. You can easily watch CS broadcasts just by adding additional cables.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A television signal mixing / retransmission unit according to the present invention will be specifically described below. Inventive unit 19
Has a CS input terminal 2 and a BS input terminal 3 which respectively connect one of two satellite broadcasting receiving systems 1 and 1 installed outdoors. In addition, the terrestrial broadcasting reception system 4 installed outdoors
It is provided with a VU input terminal 5 for connecting to.

The satellite broadcast receiving system 1 includes a CS broadcast receiving system 1 which is connected to a CS input terminal 2 via a cable 21 from a parabolic antenna 20 for receiving a CS broadcast, and a parabolic antenna 17 to a cable 18 for receiving a BS broadcast. Through B
There is a BS broadcast receiving system 1 connected to the S input terminal 3. Since the satellite orbits of the satellite reception systems 1 and 1 are different, the directions of the parabolic antennas 17 and 20 are different.

The terrestrial broadcasting reception system 4 is, as in the conventional case, outdoors with a VHF antenna 12 and a UHF antenna 1 for receiving terrestrial broadcasting.
3, the signals of both antennas 12 and 13 are combined into one by the mixer 14, and one coaxial cable 15 is connected from the mixer 14.
And is connected to the V / U input terminal 5.

The unit 19 of the present invention further includes a mixer 6 for mixing signals from the input terminals 2, 3, 5 and an output signal of the mixer 6 for distribution to output terminals 10, 11 described later. A terrestrial satellite common first terminal 10 for connecting from the bidirectional distributor 7 to the image receiving device 9 that is not compatible with satellite broadcasting, and the bidirectional distributor 7 to the BS tuner 8 or satellite broadcasting compatible. The second terminal 11 common to ground satellites for connecting to the image receiving device 25.

The mixer 6 in the unit 19 of the present invention is
C connected to the CS input terminal 2 via the capacitor C1
A filter HPF that selectively transmits S broadcast signals, and B
BS connected to S input terminal 3 via capacitor C2
Filter BPF that selectively transmits broadcast signals, V
A filter LPF, which is connected to the U input terminal 5 via a capacitor C3 and selectively transmits a terrestrial broadcast signal, is connected in parallel to the bidirectional distributor 7.

The bidirectional distributor 7 includes an output side of the mixer 6, a terrestrial satellite common first terminal 10 and a terrestrial satellite common second terminal 11.
And are connected to each other via resistors R1, R2 and R3,
This is a so-called resistance type distributor, and capacitors C4 and C5 are inserted between the bidirectional distributor 7 and the ground satellite common first terminal 10 and the ground satellite common second terminal 11, respectively.
The input terminal 2 and the BS input terminal 3 are connected to the ground satellite common second terminal 11 via RFC1 and RFC2, respectively, and the V / U input terminal 5 is connected to the ground satellite common first terminal 10.
The second terminal 11 common to terrestrial satellites.
It is also possible to send an AV signal from the to the first terminal 10 common to the ground satellites via the bidirectional distributor 7.

Each filter HPF, BPF, LPF
Is composed of capacitors C6 to C12 and coils L1 to L8.

The unit 19 of the present invention constructed as described above.
Is attached to the outside such as an outer wall surface, the cable 18 of the outdoor satellite broadcasting receiving system 1 (for BS broadcasting) is used as the BS input terminal 3, and the cable 15 of the outdoor terrestrial broadcasting receiving system 4 is connected to the V. Connect to the U input terminals 5, respectively.

Then, from the common terrestrial satellite second terminal 11 to the indoor BS tuner 8 or satellite broadcasting compatible image receiving device 25.
The cable 22 is wired to a certain installation location, and the cable 23 is connected to the installation location from the terrestrial satellite common first terminal 10 to another satellite broadcasting non-compatible image receiving device 9.
It is also possible to connect the BS tuner 8 or the satellite broadcast-compatible image receiving device 25 to the terrestrial satellite common first terminal 10 via the cable 23 to view the satellite broadcast.

Here, the BS tuner 8 or the satellite broadcast compatible image receiving device 25 is connected to the cable 22 from the terrestrial satellite common second terminal 11 through the mixer 24, and the BS tuner 8 or the satellite broadcast compatible image receiving device is received. The AV signal output of the device 25 is output from the mixer 24 to the cable 22, the terrestrial satellite common second terminal 11, the bidirectional distributor 7, the terrestrial satellite common first terminal 1.
0, image receiving device 9 that does not support satellite broadcasting through cable 23
It also flows to.

Therefore, when a satellite broadcast is being viewed by the BS tuner 8 or the satellite broadcast compatible image receiving device 25, B
The AV signal demodulated by the S tuner 8 or the satellite broadcasting-compatible image receiving device 25 flows to the image receiving device 9 that does not support satellite broadcasting.
Satellite broadcasting can be viewed simultaneously on a plurality of image receiving devices 9 and 25 at different locations. When the satellite broadcasting compatible image receiving device 25 is a video recorder, the reproduced AV signal also flows to the image receiving device 9 not compatible with satellite broadcasting, and the same video software is viewed on the plurality of image receiving devices 9 and 25 at different locations. it can.

When the CS broadcast is opened and the viewer wants to watch it, the satellite broadcast receiving system 1 (for the CS broadcast) is installed outdoors, the cable 21 is connected to the CS input terminal 3, and the CS broadcast company. BS tuner 8
Alternatively, it is only necessary to attach the decoder lent by the CS broadcasting company to the satellite broadcasting compatible image receiving device 25.

[0022]

As described above, in the television signal mixing / retransmission unit according to the present invention, the BS tuner or the satellite broadcasting-compatible image receiving device is connected to the common second terminal of the terrestrial satellite via the mixer to thereby make the BS tuner. Alternatively, since the AV signal demodulated by the satellite broadcasting compatible image receiving device can be sent to the satellite broadcasting non-compatible image receiving device, if there is only one BS tuner or satellite broadcasting compatible image receiving device, replacement of the image receiving device is possible. BS without complicated system development
The satellite broadcasting or the reproduced video software selected by the tuner or the satellite broadcasting compatible image receiving device can be viewed as it is even on the other satellite broadcasting non-compatible image receiving device.

Further, since the unit of the present invention is provided with the CS input terminal and the BS input terminal which are respectively connected to the two satellite broadcasting receiving systems installed outdoors, the CS broadcasting has started in addition to the existing satellite broadcasting. In this case, it is easy to view the CS broadcast with the BS tuner or the satellite broadcast compatible image receiving device, and the CS broadcast can be viewed simultaneously with the satellite broadcast non-compatible image receiving device.

[Brief description of drawings]

FIG. 1 is a block diagram of a television broadcast receiving system using a television signal mixing / retransmission unit of the present invention.

FIG. 2 is a circuit diagram of the unit of the present invention.

FIG. 3 is a block diagram of a conventional television broadcast receiving system.

[Explanation of symbols]

 1 satellite broadcast receiving system 2 CS input terminal 3 BS input terminal 4 terrestrial broadcast receiving system 5 V / U input terminal 6 mixer 7 bidirectional distributor 8 BS tuner 9 image receiving device (satellite broadcast non-compatible type) 10 common to ground satellite One terminal 11 Ground satellite common second terminal 25 Image receiving device (satellite broadcasting compatible type)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shingo Fukushima 3-6 Tsukioka-cho, Toyama City, Toyama Pref. Tateyama Science Co., Ltd. South Factory

Claims (1)

[Claims] 1. A CS input terminal (2) and a BS input terminal (3) for respectively connecting one of two satellite broadcasting reception systems (1, 1) installed outdoors, and a terrestrial broadcasting installed outdoors. VU input terminal (5) for connecting the receiving system (4)
A mixer (6) for mixing signals from the input terminals (2, 3, 5), a bidirectional distributor (7) connected to the output side of the mixer (6), and a bidirectional distributor ( First terminal (10) common to terrestrial satellites, which is connected from 7) to an image receiving device (9) that does not support satellite broadcasting, and a bidirectional distributor (7) to a BS tuner (8) or an image receiving device (25) compatible with satellite broadcasting. And a second terminal (11) common to the ground satellites connected to the television signal mixing / retransmission unit.