JP2009232100A - Booster - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a booster for improving workability and convenience when changing broadcasting to be viewed. <P>SOLUTION: A case body B includes: an input means 1 provided with a first input terminal 10 to which either one of a terrestrial broadcasting signal received by an antenna A1 for terrestrial broadcasting signal reception installed to a house E or a cable broadcasting signal transmitted from a broadcasting center F through a coaxial cable C1 or an optical cable C2 is input, and a second input terminal 11 to which a satellite broadcasting signal received by an antenna A2 for satellite broadcasting signal reception is input; a terrestrial broadcasting signal amplification means 2 for amplifying the terrestrial broadcasting signal; a cable broadcasting signal amplification means 3 for amplifying the cable broadcasting signal; a satellite broadcasting signal amplification means 4 for amplifying the satellite broadcasting signal; and a terrestrial/cable changeover switch 5 which is a first switching means for switching a route connecting the first input terminal 10 and the cable broadcasting signal amplification means 3 and a route connecting the first input terminal 10 and the terrestrial broadcasting signal amplification means 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a booster that amplifies a terrestrial broadcast signal or a wired broadcast signal such as a cable television.

Conventionally, boosters that amplify signals such as FM, VHF, UHF, BS-IF, CS-IF, or CATV are provided. In recent years, with the advent of various multimedia-related devices, information boards called so-called multimedia ports have been provided that house the boosters together with these multimedia-related devices. It is disclosed in Patent Document 1. This information panel is installed in each dwelling unit.For example, when viewing terrestrial broadcasts, a terrestrial broadcast booster and a terrestrial broadcast antenna installed in the dwelling unit are stored in the information panel. When using a coaxial cable to watch cable broadcasting such as cable TV, store the booster for cable broadcasting in the information panel and connect the booster and the coaxial cable drawn into the dwelling unit from the cable TV station. Each broadcast can be viewed by connecting.
JP 2000-134122 A

  However, the conventional example requires a terrestrial broadcast booster when viewing terrestrial broadcasts, and a wired broadcast booster when viewing wired broadcasts. When changing to viewing of cable broadcasting in a dwelling unit that houses the booster in the information board, the terrestrial broadcasting booster must be replaced with a cable broadcasting booster, which is inferior in workability and convenience. there were.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a booster capable of improving workability and convenience when changing a broadcast to be viewed.

  In order to achieve the above object, the invention of claim 1 is any of a terrestrial broadcast signal received by a terrestrial broadcast signal receiving antenna or a wired broadcast signal transmitted from a broadcast center via a coaxial cable or an optical cable. Input means having a first input terminal to which one of the signals is input, a terrestrial broadcast signal amplifying means for amplifying a terrestrial broadcast signal, a wired broadcast signal amplifying means for amplifying a wired broadcast signal, and a first input terminal And a wired broadcast signal amplifying means, and a first switching means for switching between a path connecting the first input terminal and the terrestrial broadcast signal amplifying means.

  According to a second aspect of the present invention, in the first aspect of the present invention, the input means has a second input terminal to which the satellite broadcast signal received by the satellite broadcast signal receiving antenna is input, and amplifies the satellite broadcast signal. It is characterized by comprising satellite broadcast signal amplification means and mixing means for mixing the amplified terrestrial broadcast signal or cable broadcast signal and the amplified satellite broadcast signal.

  According to a third aspect of the present invention, there is provided the demultiplexing means for demultiplexing the terrestrial broadcast signal or the cable broadcast signal and the satellite broadcast signal from the first input terminal, the second input terminal and the satellite according to the second aspect of the present invention. And a second switching means for switching between a path connecting the broadcast signal amplifying means and a path connecting the demultiplexing means and the satellite broadcast signal amplifying means.

  The invention of claim 4 is characterized in that, in the invention of any one of claims 1 to 3, the power supply means for supplying power to each amplification means is provided, and the power supply means is provided with a feed terminal for feed wiring. To do.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, a distribution unit that distributes the signal amplified by each amplification unit, and each signal output from the distribution unit is supplied to a plurality of video equipments. Output means having a plurality of output terminals to be supplied.

  According to the first aspect of the present invention, the amplifying means for amplifying the terrestrial broadcast signal and the amplifying means for amplifying the cable broadcast signal such as cable television can be appropriately switched. Therefore, there is no need to replace the booster when changing from cable TV viewing to cable TV, etc., so that workability and convenience can be improved.

  According to the invention of claim 2, since the satellite broadcast signal received by the satellite broadcast signal receiving antenna can also be amplified, each viewing of terrestrial broadcasting, cable television broadcasting, and satellite broadcasting can be performed without exchanging the booster. Can be changed.

  According to the invention of claim 3, since the satellite broadcast signal can be amplified even when the satellite broadcast signal is transmitted via the coaxial cable or the optical cable, the terrestrial broadcast, the cable television broadcast, Each viewing of the satellite broadcast can be changed.

  According to the invention of claim 4, since it is possible to feed and wire between the internal devices other than the booster disposed in the information panel, the wiring is simpler than the case of wiring individually for each internal device. Can be realized.

  According to the fifth aspect of the present invention, it is not necessary to provide a distributor by providing the distribution means. Therefore, a wiring for connecting the booster and the distributor is unnecessary, and a simple wiring can be realized.

  Hereinafter, embodiments of a booster according to the present invention will be described with reference to the drawings. In the following description, the up, down, left and right directions in FIG. In the present embodiment, as shown in FIG. 1, the terrestrial broadcast signal received by the terrestrial broadcast signal receiving antenna A1 installed in the dwelling unit E, or transmitted from the broadcast center F via the coaxial cable C1 or the optical cable C2. A first input terminal 10 to which any one of cable broadcast signals such as cable television is input and a second input terminal 11 to which a satellite broadcast signal received by the satellite broadcast signal receiving antenna A2 is input. Input means 1, terrestrial broadcast signal amplifying means 2 for amplifying terrestrial broadcast signals, wired broadcast signal amplifying means 3 for amplifying wired broadcast signals, satellite broadcast signal amplifying means 4 for amplifying satellite broadcast signals, First switching means for switching between a path connecting the first input terminal 10 and the cable broadcast signal amplifying means 3 and a path connecting the first input terminal 10 and the terrestrial broadcast signal amplifying means 2. That includes a terrestrial / cable changeover switch 5 in the housing B.

  A demultiplexing unit 40 is connected to the first input terminal 10, and a signal input from the first input terminal 10 by the demultiplexing unit 40 is divided into a terrestrial broadcast signal or a wired broadcast signal and a satellite broadcast signal. Waved. The demultiplexed terrestrial broadcast signal or wired broadcast signal is input to the terrestrial broadcast signal amplification means 2 or the wired broadcast signal amplification means 3 via the terrestrial / wired changeover switch 5, and the satellite broadcast signal is a satellite broadcast described later. The signal is input to the satellite broadcast signal amplifying means 4 through the signal input changeover switch 6.

  The terrestrial broadcast signal amplifying means 2 is a first terrestrial demultiplexing means 20 that demultiplexes a frequency band signal into an FM band (76 to 90 MHz) and VHFL band (90 to 108 MHz) signal and a signal in another frequency band. And a second terrestrial demultiplexing means for demultiplexing a signal in a frequency band excluding the FM band and the VHFL band into a signal having a frequency band of UHF band (470 to 770 MHz) and a signal having a VHFH band (170 to 222 MHz) 21, FM / VHFL band amplifying means 22 for amplifying FM band and VHFL band signals, VHFH band amplifying means 23 for amplifying VHFH band signals, UHF band amplifying means 24 for amplifying UHF band signals, The first terrestrial mixing unit 25 that mixes the output signals of the FM / VHFL band amplifying unit 22 and the VHFH band amplifying unit 23, the output signal of the first terrestrial mixing unit 25, and the UHF band increase Comprising a second ground wave mixing means 26 for mixing the output signal of the unit 24.

  The cable broadcast signal amplifying means 3 is provided on the input means 1 side, and an upstream (10-60 MHz) signal that is a frequency band in the upstream direction (direction from the dwelling unit to the broadcasting station) and a downstream direction (from the broadcasting station to the dwelling unit). A first demultiplexing / mixing unit 30 that demultiplexes or mixes a signal in a downstream band (70 to 770 MHz) that is a frequency band in the direction of the transmission, an upstream band amplification unit 31 that amplifies the upstream signal, and a downstream It comprises a downstream band amplifying unit 32 for amplifying a band signal and a second branching / mixing unit 33 provided on the output unit 9 side for splitting or mixing the upstream band signal and the downstream band signal. Here, since the wired broadcast signal amplifying unit 3 is compatible with bidirectional communication, the upstream wired broadcast signal is input to the upstream band amplifying unit 31 via the second demultiplexing / mixing unit 33 and amplified. After that, it is output to the input means 1 side via the first demultiplexing / mixing means 30. Further, the cable broadcasting signal in the down direction is input to the down band amplifying unit 32 via the first demultiplexing / mixing unit 30, and after being amplified, is output to the output unit 9 side via the second demultiplexing / mixing unit 33. Is output.

  The satellite broadcast signal amplifying means 4 amplifies signals in the frequency band of the BS-IF band and the 110-degree CS-IF band (1000 to 2150 MHz), and includes the first input terminal 10 or the second input terminal 11. Is amplified and output to the mixing means 41. In front of the satellite broadcast signal amplifying means 4, a satellite broadcast signal input changeover switch 6, which is a second switching means comprising a slide type two-contact switch, is provided, and a contact c connected to the demultiplexing means 40 is provided. The contact point d connected to the second input terminal 11 can be switched. Thus, when a satellite broadcast signal is input together with a terrestrial broadcast signal or a cable broadcast signal from the first input terminal 10, the satellite broadcast signal input changeover switch 6 is switched to the contact c side, and the second input terminal When a satellite broadcast signal is input from 11, the satellite broadcast signal amplifying means 4 can amplify the satellite broadcast signal by switching the satellite broadcast signal input switch 6 to the contact d side.

  The signals amplified by each of the amplifying means are mixed by the mixing means 41 provided in the subsequent stage and input to the distribution means 8 described later. Here, the terrestrial / wired changeover switch 5 is provided between the demultiplexing means 40, the terrestrial broadcast signal amplification means 2, and the wired broadcast signal amplification means 3, as well as the mixing means 41, the terrestrial broadcast signal amplification means 2, and the wired broadcast. A slide type switch having two contacts between the signal amplifying means 3 and the contacts a and a ′ connected to the cable broadcasting signal amplifying means 3 and the contacts connected to the terrestrial broadcasting signal amplifying means 2. It is possible to switch between b and b ′. Thus, when a terrestrial broadcast signal is input from the first input terminal 10, the terrestrial / wired changeover switch 5 is switched to the contact b, b ′ side, and the wired broadcast signal is output from the first input terminal 10. Can be amplified using the amplification means corresponding to each signal by switching the terrestrial / wired changeover switch 5 to the contact points a and a ′ side.

  Signals output from the mixing unit 40 are distributed into a plurality (eight in the drawing) by the distributing unit 8 and input to a plurality (eight in the drawing) output terminals 90 of the output unit 9. Between the distribution means 8 and each output terminal 90, there is provided a slide-type direction switch 91 for switching between unidirectional communication and bidirectional communication, and a device for receiving only a downstream signal is output terminal 90. Can be switched to the unidirectional side, and when a device that performs bidirectional communication is connected to the output terminal 90, it can be switched to the bidirectional side.

  The casing B is provided with power supply means 7 for supplying power to the amplification means. The power supply means 7 is provided with a power supply terminal 70 for connection to an external AC power supply (not shown), and the operation of each means is performed using an AC voltage supplied via the power supply terminal 70. Create a voltage. The power supply terminal 70 is connected in parallel with a feed wiring feed terminal 71. For this reason, feed wiring can be performed between the internal units other than the present embodiment arranged in the information board D, so that simple wiring is realized as compared with the case where the internal units are individually wired. be able to.

  As shown in FIGS. 2 (a) and 2 (b), each of the above means is housed in a casing B made of, for example, aluminum die casting. The casing B includes a substantially rectangular parallelepiped main portion B1 extending in the vertical direction and a substantially flat flange portion B2 provided on the rear surface of the main portion B1 and protruding in the vertical direction. Mounting holes B3 for mounting the casing B in the information panel D are formed at the left and right ends. Three gain adjustment volumes Vol1 to Vol3 for adjusting the gain of each signal in the VHFL band, the VHFH band, and the UHF band are provided on the left side of the front center of the main part B1. Three slide attenuators SW1 to SW3 for switching whether or not each signal is attenuated are provided below these gain adjustment volumes Vol1 to Vol3, and FM bands are provided below these slide attenuators SW1 to SW3. And a slide type FM switch SW4 for switching whether to amplify or block the signal and a slide type U / V switch SW5 for switching whether to amplify each signal in the VHFL band, VHFH band, and UHF band. ing.

  In the center of the front surface of the main part B1, a gain adjustment volume Vol4 that adjusts the gain of the upstream signal of the cable broadcast signal and a slide-type uplink switch SW6 that switches between unidirectional communication and bidirectional communication are provided. . Below the gain adjustment volume Vol4 and the upstream switch SW6, there are a gain adjustment volume Vol5 for adjusting the gain of the downstream signal of the cable broadcast signal, and a slide attenuator SW7 for switching whether or not the downstream signal is attenuated. In addition, a slide-type tilt changeover switch SW8 for switching whether to adjust the gain between the high frequency band and the low frequency band in the downstream signal is provided.

  On the right side of the front center of the main part B1, there is a slide for switching whether to supply power to a gain adjustment volume Vol6 for adjusting the gain of the satellite broadcast signal and to a converter part (not shown) of the satellite broadcast signal receiving antenna A2. And a converter power switch SW9 of the type. The terrestrial / wired changeover switch 5 and the satellite broadcast signal input changeover switch 6 described above are provided below the gain adjustment volume Vol6 and the converter power switch SW9.

  At the upper end of the main part B1, a step part B4 is formed which is lowered by one step backward from the front side, and four output terminals 90 are provided on each upper side of the step part B4 and the main part B1. They are arranged in two stages. Further, the above-described direction changeover switch 91 corresponding to each output terminal 90 is provided on the upper front side of the main part B1. A step B5 is formed at the lower end of the main portion B1 so as to be lowered by one step from the front side. On the left side of the front of the step B5, the power supply of the present embodiment is switched on / off. A rocker type power switch SW10 is provided. The first input terminal 10 and the second input terminal 11 described above are provided on the lower right side of the main part B1, and the power supply terminal 70 and the feed terminal 71 described above are provided on the lower side of the step B5. And are provided.

  In the present embodiment, as shown in FIG. 3, an information board D that is installed in each dwelling unit E of the user and stores internal devices such as video equipment (not shown) and communication equipment (not shown). When the terrestrial broadcast signal receiving antenna A1 and the satellite broadcast signal receiving antenna A2 are installed in the dwelling unit E, the first input terminal 10 and the terrestrial broadcast signal receiving antenna A1 are connected to each other. Connect to the second input terminal 11 and the satellite broadcast signal receiving antenna A2, and switch the terrestrial / wired changeover switch 5 to the terrestrial side (contacts b and b 'side). You can watch satellite broadcasts. When the terrestrial broadcast signal and the satellite broadcast signal are mixedly transmitted, the terrestrial broadcast signal receiving antenna A1 and the satellite broadcast signal receiving antenna A2 are connected to the first input terminal 10, and The satellite broadcast signal input selector switch 6 may be switched to the contact c side.

  When a cable broadcasting service such as cable television is subscribed, the coaxial cable C1 drawn from the broadcasting center F into the dwelling unit E is connected to the first input terminal 10 and the second input terminal 11 is connected. Are connected to the satellite broadcast signal receiving antenna A2, and the terrestrial / wired changeover switch 5 is switched to the wired side (contacts a and a ′ side), so that the wired broadcast and the satellite broadcast can be viewed.

  When the satellite broadcast signal is included in the cable broadcast signal, it is not necessary to connect the second input terminal 11 and the satellite broadcast signal receiving antenna A2, and the satellite broadcast signal input changeover switch 6 is switched to the satellite broadcast signal amplification. What is necessary is just to switch to the path | route side (contact c side) which connects the means 4 and the demultiplexing means 40. FIG. Further, in the case of the FTTH system in which the optical cable C2 is drawn from the broadcasting center F into the dwelling unit E, a video line terminating device (V-ONU) G is provided in the dwelling unit E, and the video line terminating unit G What is necessary is just to connect to the 1st input terminal 10 by converting the optical cable C2 drawn in E into the coaxial cable C1.

  As described above, the present embodiment includes the terrestrial broadcast signal amplifying means 2 for amplifying the terrestrial broadcast signal and the wired broadcast signal amplifying means 3 for amplifying the wired broadcast signal such as cable television. Since the connection path with the input means 1 can be appropriately switched by the terrestrial / wired change-over switch 5, a booster can be used when changing from viewing terrestrial broadcasting to viewing cable broadcasting such as cable television as in the prior art. There is no need for replacement, and therefore the workability and convenience can be improved. In addition, the satellite broadcast signal can be amplified both when the satellite broadcast signal is received by the satellite broadcast signal receiving antenna and when it is transmitted via the coaxial cable C1 or the optical cable C2. Therefore, the booster is exchanged. The viewing of terrestrial broadcasting, cable television broadcasting, and satellite broadcasting can be changed without any change.

  In this embodiment, the distribution means 8 is built in the casing B. However, as shown in FIG. 4, for example, the distribution means 8 and the output means 9 are separated from the casing B, and a distributor H is separately provided. It doesn't matter. When the distribution means 8 is built in the housing B as in the present embodiment, it is not necessary to provide the distributor H. Therefore, a wiring for connecting the present embodiment and the distributor H is unnecessary, and a simple wiring is realized. can do. On the other hand, if a separate distributor H is provided, the number of distribution of the amplified signals can be changed as appropriate by replacing the distributor H.

It is a block diagram which shows embodiment of the booster which concerns on this invention. It is a figure which shows an external appearance same as the above, (a) is a front view, (b) is a side view. It is the schematic of the dwelling unit provided with the same as the above. It is a block diagram which shows the case where the distribution means same as the above is separated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Input means 10 1st input terminal 2 Terrestrial broadcast signal amplification means 3 Wired broadcast signal amplification means 5 Terrestrial / wired changeover switch (1st switching means)
A1 Antenna for receiving terrestrial broadcast signals C1 Coaxial cable C2 Optical cable F Broadcast center

Claims (5)

  Input means having a first input terminal for receiving either a terrestrial broadcast signal received by a terrestrial broadcast signal receiving antenna or a wired broadcast signal transmitted from a broadcast center via a coaxial cable or an optical cable A terrestrial broadcast signal amplifying means for amplifying the terrestrial broadcast signal; a wired broadcast signal amplifying means for amplifying the wired broadcast signal; a path connecting the first input terminal and the wired broadcast signal amplifying means; And a first switching means for switching a path connecting the input terminal and the terrestrial broadcast signal amplifying means.   The input means has a second input terminal to which a satellite broadcast signal received by a satellite broadcast signal receiving antenna is input, a satellite broadcast signal amplifying means for amplifying the satellite broadcast signal, and an amplified terrestrial broadcast 2. The booster according to claim 1, further comprising mixing means for mixing the signal or cable broadcast signal and the amplified satellite broadcast signal.   A demultiplexing means for demultiplexing a terrestrial broadcast signal or a cable broadcast signal and a satellite broadcast signal from the first input terminal; a path for connecting the second input terminal and the satellite broadcast signal amplifying means; 3. The booster according to claim 2, further comprising second switching means for switching a path connecting said means and the satellite broadcast signal amplifying means.   4. The booster according to claim 1, further comprising power supply means for supplying power to each amplification means, wherein the power supply means is provided with a feed terminal for feed wiring.   The distribution means for distributing the signal amplified by each amplification means, and the output means having a plurality of output terminals for supplying each signal output from the distribution means to a plurality of video equipment. Item 5. The booster according to any one of Items 1 to 4.

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