JPH06351023A - Satellite broadcasting antenna adjusting device - Google Patents

Abstract

PURPOSE:To easily adjust the installing angle of an antenna even when a tuner for use of satellite broadcasting reception is separated from a parabolic antenna by having the tuner for use of satellite broadcasting reception and a remote control device which remotely controls the tuner. CONSTITUTION:The remote control device which remotely controls the tuner for use of satellite broadcasting reception is constituted of a receiving part 20 of a radio-transmitted high frequency signal, an amplifying part 21 of the received high frequency signal, a demodulating part 22 which extracts original code data from the amplified high frequency signal, a signal converting part 23 which converts the code data into a signal for use of display, and a display part 24 which performs display based on the signal for use of display. Then, AGC digital data based on the level of the AGC signal corresponding to the adjusting state of the antenna are compared with a reference value stored in a storage part 11 by a sequential comparing part 13, and the level of the AGC signal at that time is detected. Then, the code data corresponding to the level are transmitted and received, and the display corresponding to the code data is bar-displayed on a liquid crystal panel by the display part 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite broadcast antenna adjusting device for easily adjusting the azimuth and elevation of a satellite broadcast antenna by one person.

[0002]

2. Description of the Related Art In order to receive satellite broadcasting in a good image state, a satellite broadcasting antenna, for example, a parabolic antenna is aimed in the southwest direction (in the case of BS) where the broadcasting satellite is located, and the azimuth and elevation angles differ depending on the region. Need to be adjusted to fit exactly. Conventionally, in order to accurately adjust the direction of a parabolic antenna toward a broadcasting satellite, attention has been paid to the fact that the AGC signal from the FM demodulation unit of the satellite broadcasting reception tuner changes according to the received signal, and the AGC terminal of the FM detection unit is used. Connect a level checker and adjust the azimuth and elevation of the parabolic antenna accurately so that the indicated value of the level checker becomes maximum. The so-called AGC voltage detection method is well known. The same applies not only to the parabolic antenna but also to other antennas for receiving satellite broadcasting such as a plane antenna. However, in order to adjust the installation angle of the parabolic antenna by the above AGC voltage detection method, it is necessary to adjust the installation angle while paying attention to the indication value of the level checker, and the tuner for satellite broadcasting reception should be installed near the parabolic antenna. It is difficult to adjust if you do not go, and it is difficult to adjust when the satellite receiving tuner and the parabolic antenna are separated. In particular, adjusting an antenna installed on the roof of a private house or the roof of an apartment is extremely troublesome.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the satellite broadcast antenna adjustment is capable of easily adjusting the antenna installation angle even if the satellite broadcast receiving tuner and the parabola antenna are separated. It is an object of the present invention to provide a device.

[0004]

In order to achieve the above object, an IF sent from a CS or BS converter.
In the satellite broadcast receiving tuner that selects the desired satellite broadcast channel from the signal and demodulates the audio and video signals,
An AD conversion unit that receives an AGC signal from the AGC circuit of the FM demodulation unit and converts the AGC signal into digital data; a comparison unit that compares the data with a reference value; an encoding unit that generates predetermined code data based on the comparison result; A remote control for remotely controlling the satellite broadcast receiving tuner, which comprises a high-frequency modulator for modulating code data into a high-frequency signal and a transmitter for wirelessly transmitting the high-frequency signal, and a receiver for the high-frequency signal wirelessly transmitted, An amplifying unit for the received high frequency signal, a demodulating unit for extracting the original code data from the amplified high frequency signal, a signal converting unit for converting the code data into a display signal, and displaying based on the indicating signal. And a display section.

[0005]

With the above configuration, when adjusting the installation angle of the satellite broadcasting antenna, the FM demodulation of the satellite broadcasting reception tuner is performed as the adjustment angle is made closer to or farther from the azimuth and elevation angles where the satellite is present. A state in which the AGC signal level obtained from the unit exceeds the reference value (reception state is good) is obtained. The satellite broadcast receiving tuner side wirelessly transmits code data indicating that the AGC signal level indicates a good reception state, and the remote control side receives the code data and turns on the display unit through predetermined signal processing.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A satellite broadcast antenna adjusting device according to the present invention will be described in detail below with reference to the drawings. Figure 1
1 is a block diagram of an embodiment of a satellite broadcasting antenna adjusting device device according to the present invention. Reference numeral 1 denotes a channel selection unit that selects a desired channel among the satellite broadcast channels from the IF signal 4 and converts the channel into an intermediate frequency signal. Reference numeral 2 is an intermediate frequency amplification unit that amplifies the intermediate frequency signal. An AGC unit 3 detects the amplified intermediate frequency signal and generates an AGC signal. 6 is U
A high-frequency modulator that modulates the carrier wave with a high-frequency signal in the HF band or the like using the code data. A transmitter 7 wirelessly transmits the modulated high frequency signal. 10 is AG
It is an AD conversion unit that receives the AGC signal from the C unit 3 and converts it into digital data. A storage unit 11 stores at least two reference values. Reference numeral 12 is a comparison unit that compares the reference value with the AGC digital data. Reference numeral 13 denotes a successive comparison unit that sequentially compares the reference value with AGC digital data for each predetermined sampling, and detects a reference value having the smallest difference from the AGC digital data for each sampling.
Reference numeral 14 is an input unit for instructing the antenna adjustment mode. 1
An encoding unit 5 generates code data corresponding to the comparison result of the comparison unit 12 and the detected reference value. Reference numeral 16 is a control unit that controls each unit. The above constitutes the tuner side for satellite broadcast reception. Reference numeral 20 is a receiving unit that receives a high frequency signal wirelessly transmitted. Reference numeral 21 is an amplifier that amplifies the received high frequency signal. Reference numeral 22 is a demodulation unit that extracts the original code data from the amplified high frequency signal. Reference numeral 23 is a signal conversion unit that converts the code data into a display signal. Reference numeral 24 is a display unit that displays, for example, a good reception state by blinking an LED based on the display signal. The reception / display unit is composed of 20 to 24. Reference numeral 26 is a data register that stores codes of the remote controller, and 27 is a key input unit including a mode key, operation keys, and the like. Reference numeral 28 denotes a remote control signal transmission unit that emits a remote control signal by infrared rays. A control unit 29 controls the reception / display unit and each unit. The above parts constitute the remote controller side.

The operation of the satellite broadcast antenna adjusting apparatus according to the present invention will be described. AG according to the adjustment state of the antenna
The AGC digital data based on the level of the C signal and the reference value stored in the storage unit 11 are compared by the successive approximation unit 13 to determine the level of the AGC signal at that time (as the reference value with the smallest difference). To detect. The code data corresponding to the level is transmitted and received, and a display corresponding to the code data, for example, a bar display on the liquid crystal panel is displayed on the display unit 24. FIG. 2 is a display example of the adjustment state of the installation angle of the satellite broadcast antenna adjusting apparatus according to the present invention. When the installation angle of the satellite broadcasting antenna is adjusted and the adjustment mode key 32 of the remote controller 30 is pressed to enter the antenna adjustment mode, the bar 31 is displayed on the remote controller 30, for example, on the liquid crystal panel according to the antenna adjustment state. The antenna installation angle is adjusted so that the number of the bars 31 is maximized. In addition, as a method of performing the rough adjustment, for example, a reference value corresponding to 1 or 2 of the five-level evaluation scale of subjective evaluation is provided, and the comparison unit 12 compares with the AGC digital data, and when the reference value is exceeded, reception is performed. The LED may be turned on by transmitting / receiving the code data indicating the limit. Further, the display may be a numerical display using a numerical segment. Alternatively, a plurality of LEDs may be used and the adjustment state may be displayed by the number of lit LEDs.

[0008]

As described above, there is provided a satellite broadcast antenna adjusting apparatus device capable of easily adjusting the antenna installation angle even if the satellite broadcast receiving tuner and the parabola antenna are separated. Therefore, since the remote control side of the satellite broadcasting antenna adjusting device according to the present invention can be carried to the satellite broadcasting antenna and the antenna installation angle can be adjusted while observing the display of the remote controller, it is difficult for one person to use the conventional method. Corresponds to antenna adjustment.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a satellite broadcasting antenna adjusting device device according to the present invention.

FIG. 2 is a display example of the adjustment state of the installation angle of the satellite broadcast antenna adjustment device according to the present invention.

[Explanation of symbols]

 1 channel selection unit 2 intermediate frequency amplification unit 3 AGC unit 4 IF signal 5 encoding unit 6 high frequency modulation unit 7 transmission unit 10 AD conversion unit 11 storage unit 12 comparison unit 13 successive approximation unit 14 input unit 15 encoding unit 16 control unit 20 reception unit 21 amplification section 22 demodulation section 23 signal conversion section 24 display section 26 data register 27 key input section 28 remote control signal transmission section 29 control section 30 remote control 31 bar 32 adjustment mode key

Claims (5)

[Claims] 1. A satellite broadcast receiving tuner for selecting a desired satellite broadcast channel from an IF signal sent from a CS or BS converter and demodulating audio and video signals, from an AGC circuit of an FM demodulation section to an AGC signal. An AD conversion unit for receiving the data and converting it into digital data, a comparison unit for comparing the data with a reference value, an encoding unit for generating predetermined code data based on the comparison result, and a high frequency for modulating the code data into a high frequency signal. In a remote controller that includes a modulator and a transmitter that wirelessly transmits the high-frequency signal, in a remote controller that remotely controls the satellite broadcast reception tuner, a receiver for the wirelessly transmitted high-frequency signal and an amplifier for the received high-frequency signal. , A demodulation unit for extracting the original code data from the amplified high frequency signal, and converting the code data into a display signal A satellite broadcast antenna adjusting apparatus, comprising: a signal conversion unit for performing display and a display unit for displaying based on the display signal. 2. A storage unit for storing at least two reference values and the reference value and AGC digital data for each predetermined sampling are sequentially compared, and a reference value having the smallest difference from the AGC digital data for each sampling is selected. It comprises a successive approximation detecting unit, an input unit for instructing an antenna adjustment mode, an encoding unit for generating code data corresponding to the detected reference value, and a control unit for controlling each unit. 2. A display unit for displaying various information.
The satellite broadcasting antenna adjustment device described. 3. The satellite broadcast antenna adjusting apparatus according to claim 1, wherein the display unit is an LED element. 4. The satellite broadcast antenna adjustment apparatus according to claim 2, wherein the display unit is a liquid crystal panel. 5. The satellite broadcast antenna adjustment apparatus according to claim 2, wherein the display unit is a segment display element.