JPH0514033A - Satellite broadcast reception system and signal converter - Google Patents

Abstract

PURPOSE:To receive plural satellite radio waves with a single antenna by only interconnecting an indoor side and an outdoor side with a signal cable for a broadcast signal. CONSTITUTION:A signal converter 8 is interposed between an antenna system 1 and a receiver 5, and a converter power supply sent to the signal converted 8 from the receiver 5 through a broadcast signal cable 6a and at least a converter power supply in a satellite changeover control signal superimposed onto the converter power supply are supplied to a converter 3 of the antenna system 1 via a broadcast signal cable 6b. On the other hand, the satellite switching control signal superimposed onto the converter power supply is converted into an antenna rotary control signal and the antenna rotary control signal is outputted to an antenna rotary section 4 of the antenna system 1 via an antenna rotary control signal cable 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite broadcast receiving system for receiving satellite radio waves from a plurality of satellites with a single antenna, and a signal converter used for the system.

[0002]

2. Description of the Related Art A conventional example of a satellite broadcast receiving system for receiving satellite radio waves from a plurality of satellites with a single antenna is shown in FIG. In FIG. 4, an antenna device 1 includes an antenna 2 that focuses satellite radio waves, a converter 3 that takes in the satellite radio waves focused by the antenna 2, converts the satellite radio waves to a predetermined frequency, and outputs the converted signals. It consists of 4 and.

The receiver 5 is connected to the converter 3 by a signal cable 6 for broadcasting signals, and is connected to the antenna rotating section 4 by a signal cable 7 for controlling antenna rotation. The receiver 5 outputs the converter power supply via the signal cable 6 for the broadcast signal and, when switching the converter output, superimposes on the converter power supply and outputs the tuning signal. Further, based on the selected tuning signal, the antenna rotation control signal is output via the signal cable 7 for antenna rotation control so that the radio wave from the satellite of the tuning concerned can be received.

In the above structure, when the power of the receiver 5 is turned on and an arbitrary channel is selected, the converter power supply (and the selection signal) is output via the signal cable 6 for the broadcast signal and the antenna is also output. An antenna rotation control signal is output via the rotation control signal cable 7. Then, the antenna 2 is rotated by the antenna rotating unit 4 so as to face the satellite of the selected channel, the converter 3 captures the radio waves focused by the antenna 2, and the broadcast signal is output to the receiver 5.

[0005]

However, in the above structure, the two signal cables 6 for broadcasting signals and antenna rotation control are provided between the antenna device 1 and the receiver 5.
It was necessary to connect at 7. In particular, when used in a general home, it is complicated to connect indoors and outdoors with multiple systems of signal cables 6 and 7, and there are many cases where the space for passing signal cables cannot be used due to housing conditions. .

Therefore, the present invention provides a satellite broadcasting receiving system capable of supporting satellite radio waves of a plurality of satellites with a single antenna by simply connecting indoors and outdoors with one system of signal cable, and a signal converter used in this system. The task is to do.

[0007]

A satellite broadcast receiving system according to the present invention for achieving the above object includes an antenna for focusing satellite radio waves, a converter for capturing satellite radio waves focused by the antenna, the antenna, and the converter. Broadcast between this receiver and an antenna device composed of an antenna rotating part for rotating the receiver, a receiver for receiving a satellite broadcast signal from this antenna device and superimposing a satellite switching control signal on a converter power supply and outputting the same. Connected with a signal signal cable for signals, a signal cable for broadcasting signals is connected between the converter and the converter, and a signal cable for controlling antenna rotation is connected between the antenna rotating unit and the converter, and the broadcast signal is received from the receiver. At least a converter of the converter power supply and satellite switching control signal transmitted via the signal cable for satellite The motor power supply via the signal cable for the broadcast signal picked up satellite switching control signal superimposed on the converter power outputs to the converter,
A signal conversion device for converting the satellite switching control signal into an antenna rotation control signal and outputting the antenna rotation control signal to the antenna rotation unit via the antenna rotation control signal cable.

Further, a signal conversion device according to the present invention for achieving the above object is such that a signal cable for broadcasting signals is connected to a receiver and a signal for broadcasting signals is connected to a converter of an antenna device. A cable connecting the antenna rotation part of the antenna device with a signal cable for antenna rotation control, and a converter power source transmitted from the receiver via the signal cable for the broadcast signal and a superimposition on the converter power source. Among the satellite switching control signals, at least the converter power source is transmitted to the converter via the signal cable for the broadcast signal, while the satellite switching control signal superimposed on the converter power source is picked up and the satellite switching control signal is controlled to rotate the antenna. The signal is converted into a signal, and the antenna rotation control signal is transmitted through the signal cable for antenna rotation control. It is obtained by outputting the antenna rotation unit.

[0009]

When a desired channel is selected by the receiver, the satellite switching control signal is output via the signal cable for the broadcast signal by superimposing it on the converter power source, and the signal converter outputs the converter power source and the satellite switching control signal. At least the converter power supply is output to the converter via a signal cable for broadcasting signals, and the satellite switching control signal superimposed on the converter power supply is picked up, and this satellite switching control signal is converted into an antenna rotation control signal, and this antenna is used. Since the rotation control signal is output to the antenna rotation part via the signal cable for antenna rotation control, if a signal converter is installed outdoors to receive satellite radio waves from multiple satellites with a single antenna, indoors and outdoors Only the signal cable for broadcasting signals needs to be connected between them.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention.

FIG. 1 shows a block diagram of a satellite broadcast receiving system. In FIG. 1, the present system includes an antenna device 1, a receiver 5, and a signal conversion device 8 interposed therebetween. The antenna device 1 and the signal conversion device 8 are installed outdoors, and the receiver 5 is installed indoors. The signal conversion device 8 and the receiver 5 are connected by a signal cable 6a for broadcasting signals, and the signal conversion device 8 and the antenna device 1 are connected by a signal cable 6b for broadcasting signals. And one (or a plurality) of antenna rotation control signal cables 7.

Since the structure of the antenna device 1 is the same as that of the conventional example, the same reference numerals as those of the conventional example are given and the description thereof is omitted.
The antenna rotation control signal cables 7 are connected to the antenna rotation unit 4, respectively.

A partial circuit block diagram of the receiver 5 is shown in FIG. In FIG. 2, when an arbitrary channel is selected when the power is turned on, the tuning microcomputer 9 outputs the power-on data to the converter power supply circuit 10 and the tuning data to the encoder 11. When the power-on data is input, the converter power supply circuit 10 receives the converter power supply (+15
V) is output. The encoder 11 creates a satellite switching control signal based on the tuning data and outputs this satellite switching control signal via the band pass filter 12. This satellite switching control signal is superimposed on the converter power supply and output to the input terminal t ₁ , and this satellite switching control signal does not interfere or interfere with other signals input / output via the signal cable 6a for broadcasting signals. It is modulated by frequency.

FIG. 3 shows a circuit block diagram of the signal converter. In FIG. 3, the signal cable 6b for the broadcast signal connected to the converter 3 is at the terminal t ₂ , and the signal cable 6a for the broadcast signal connected to the receiver 5 is at the terminal t _2.
3 and the terminals t ₂ and t ₃ are connected via a control signal trap circuit 13. The control signal trap circuit 13 blocks passage of the frequency band of the satellite switching control signal, and as for the signal from the receiver 5, only the converter power supply is output to the converter 3.

Drive power is supplied to the decoder / controller 14 via the regulator 15, and the satellite switching control signal superimposed on the converter power is input via the bandpass filter 16. When the satellite switching control signal is input, the decoder / controller 14 decodes this signal to obtain tuning data and creates an antenna rotation control signal from this tuning data. The antenna rotation control signal is outputted to the terminal t _4, the signal cable 7 antenna rotation control which is connected to the terminal t ₄ to the antenna rotation unit 4 is connected.

The operation of the above configuration will be described below.
When the power of the receiver 5 is turned on and an arbitrary channel is selected, the channel selection microcomputer 9 outputs the power-on data to the converter power circuit 10 and the channel selection data to the encoder 11 to switch the converter power source and the satellite switching superimposed on the converter power source. The control signal is output via the signal cable 6a for the broadcast signal.

The converter power source and the satellite switching control signal input to the signal converter 8 are output to the converter 3 via the signal cable 6b for broadcasting signal, and the satellite switching control signal is guided to the decoder controller 14. . The decoder / controller 14 decodes the satellite switching control signal and acts on the antenna rotation control signal based on this decoded data, and this antenna rotation control signal is output to the antenna rotation unit 4 via the antenna rotation control signal cable 7. It

The antenna rotating unit 4 rotates the antenna 2 and the converter 3 based on the antenna rotation control signal, and changes the direction of the antenna 2 to the satellite side which outputs the radio wave of the selected channel. Then, the radio waves focused by the antenna 2 are taken into the converter 3, and the converter 3 is driven by the converter power supply and outputs a broadcast signal. The output broadcast signal of the converter 3 is a signal cable 6b for broadcast signal, a signal converter 8 and a signal cable 6 for broadcast signal.
It is output to the receiver 5 via a and the broadcast of the desired channel is received.

In this embodiment, only the converter power supply from the receiver 5 to the converter 3 has been shown, but the converter 3 selectively outputs the horizontal polarized wave and the vertical polarized wave of CS broadcasting. If it is, the broadcast selection signal is output from the channel selection microcomputer 9 to the converter power supply circuit 10, and the voltage level of the converter power supply is changed (H level and L level) according to the type of the selected broadcast and output. Alternatively, the converter 3 may be configured to select the output broadcast signal according to the voltage level of the converter power supply. In addition, the converter 3 using the satellite switching control signal
When the output broadcast signal of 1 is selected, the converter power supply and the satellite switching control signal superimposed on the converter power supply are both supplied to the converter 3 via the signal cables 6a and 6b for the broadcast signal.

[0020]

As described above, according to the present invention, the signal conversion device is interposed between the antenna device and the receiver, and the signal conversion device is connected to the signal conversion device via the signal cable for the broadcast signal from the receiver. At least the converter power supply of the converter power supply and the satellite switching control signal superposed on it is supplied to the converter of the antenna device via the signal cable for the broadcast signal, while the satellite switching control signal superposed on the converter power supply is supplied. Converted to the antenna rotation control signal, and output this antenna rotation control signal to the antenna rotation part of the antenna device via the signal cable for antenna rotation control, so if the signal conversion device is installed outdoors, the indoor and outdoor broadcast signals By connecting with only the signal cable for the satellite, it is possible to receive satellite radio waves of a plurality of satellites with a single antenna.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a satellite broadcast receiving system (embodiment).

FIG. 2 is a circuit block diagram of a receiver (embodiment).

FIG. 3 is a circuit block diagram of a signal conversion device (embodiment).

FIG. 4 is a configuration diagram of a satellite broadcast receiving system (conventional example).

[Explanation of symbols]

1 ... Antenna device, 2 ... Antenna, 3 ... Converter, 4
... antenna rotating part, 5 ... receiver, 6, 6a, 6b ... signal cable for broadcast signal, 7 ... signal cable for antenna rotation control, 8 ... signal converter.

Claims (2)

[Claims] 1. An antenna device comprising an antenna for focusing satellite radio waves, a converter for taking in the satellite radio waves focused by the antenna, an antenna and an antenna rotating part for rotating the converter, and a satellite broadcast signal from the antenna device. And a receiver for receiving and transmitting the satellite switching control signal on the converter power supply and connecting the receiver with a signal cable for broadcast signal, and a signal cable for broadcast signal between the converter and the receiver. At least one of the converter power supply and the satellite switching control signal transmitted from the receiver via the signal cable for the broadcast signal is connected to the antenna rotating unit with a signal cable for controlling the antenna rotation. When the converter power source is output to the converter via the signal cable for the broadcast signal, The satellite switching control signal superimposed on the converter power supply is picked up, this satellite switching control signal is converted into an antenna rotation control signal, and this antenna rotation control signal is output to the antenna rotation unit via the antenna rotation control signal cable. A satellite broadcast receiving system, comprising: 2. A broadcast signal signal cable is connected to the receiver, a broadcast signal signal cable is connected to the converter of the antenna device, and an antenna rotating portion is connected to the antenna rotating portion of the antenna device. At least converter power supplies of the converter power supply and satellite switching control signals superposed on the converter power supply connected from the receiver through the signal cable for the broadcast signal are connected to each other by the control signal cables for the broadcast signal. While transmitting to the converter via a signal cable, the satellite switching control signal superimposed on the converter power supply is picked up, the satellite switching control signal is converted into an antenna rotation control signal, and the antenna rotation control signal is used for the antenna rotation control. The signal conversion device outputs the signal to the antenna rotating unit via the signal cable of FIG.