KR19980044077U - Azimuth and elevation indicators in satellite broadcast receivers - Google Patents

Abstract

In order to facilitate setting of azimuth and elevation when parabolic antenna for receiving satellite broadcasting is installed on a porch or the like, azimuth and elevation angle display of a satellite broadcasting receiver to display azimuth and elevation according to the installation position of the parabola antenna on a TV screen. An apparatus is disclosed. A signal for storing azimuth and elevation angles corresponding to postal codes and telephone area codes of each region in the memory section of the television, and receiving a signal applied from a remote controller to one side of the television where the azimuth and elevation angles as described above are memorized. Install the receiver. The remote controller is provided with a selection key for selecting a zip code and a telephone area code. When the zip code or telephone area code of the area where the satellite broadcasting receiver is to be installed is pressed by using the selection key of the remote controller, the signal receiving unit of the TV sets the signal. The azimuth and elevation angles received and stored in the memory unit are displayed on the screen of the television. Therefore, when the satellite broadcasting receiver is installed, the satellite broadcasting receiver can be installed quickly and accurately by using the azimuth and elevation angles displayed on the on-screen display of the television.

Description

Azimuth and elevation indicators in satellite broadcast receivers

1 is a perspective view illustrating a conventional parabolic antenna for satellite broadcasting reception.

2 is a block diagram schematically illustrating an azimuth and elevation angle display device of a satellite broadcast receiver according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings *

30: remote controller 40: signal number

50: microcomputer 60: memory unit

70: on-screen display 80: TV

[Purpose of design]

[Technical field to which the draft belongs and its prior art]

The present invention relates to an azimuth and elevation angle display device of a satellite broadcast receiver, and more particularly, in order to easily set the azimuth angle and elevation angle when a parabolic antenna for receiving satellite broadcast is installed in a veranda or the like. The present invention relates to an azimuth and elevation angle display device of a satellite broadcasting receiver in which azimuth and elevation angles are displayed on a television screen.

In general, direct satellite broadcasting (DBS) is a stationary satellite equipped with a microwave propagation device in space, and the earth receiver receives radio waves from the earth station and transmits them back to earth. In order to receive satellite broadcasts, each receiver must be equipped with a parabolic antenna for receiving satellite broadcast signals.

On the other hand, the earth station consists of an earth station antenna, a low noise amplifier, a high power amplifier, a modulator, a controller, and a transmitter. The earth station can be classified into a fixed station, a coast station, a coast station, a land mobile station, and an individual receiving station according to the form of receiving radio waves. have. In this case, the individual reception refers to a radio wave emitted from a satellite, which is directly received by a small (about 75 cm) dish-shaped antenna receiver in each home or office (DBS: direct broadcasting satellite).

In addition, the orbit of the stationary satellite exists on the equator plane with an inclination angle of 0 °, and has an eccentricity of 0 ° and has a circular shape. The angular velocity of the satellite is the same as the angular velocity of the earth and the same direction. The satellite's trajectory appears at a point above the equator and the satellite is permanently perpendicular to this point. Thus, from the ground, the satellite appears to be fixed in the air.

In addition, the reception antenna for DBS used in each home or office uses a parabolic reception antenna or a flat antenna, and the parabolic reception antenna has very sharp directivity. In this way, since the directivity in the microwave band is installed when the parabolic antenna is installed, the reception is impossible if the direction of the antenna does not exactly face the satellite, and can not be received by roughly adjusting the direction as in the case of a general VHF antenna.

Therefore, in order to install the parabolic antenna for DBS as described above, it is necessary to know the exact elevation and azimuth in order to install the antenna so that the antenna faces the satellite accurately.

However, conventionally, when installing a parabolic antenna, the reflector is positioned at the azimuth angle calculated according to a predetermined equation using a compass, and then, in order to adjust the elevation angle, the reflector is approximately rotated at an angle determined by the predetermined equation and then the television. The antenna was fixed in the direction of the best image quality while watching the broadcast received.

As described above, when the parabolic antenna is installed for satellite broadcasting reception, the installer does not accurately install the antenna while viewing the TV screen and installs the driver approximately in the direction. In particular, because the DBS broadcast signal has a strong directivity, it is difficult to install an antenna because the TV screen disappears because the signal is reduced by about 3dB even if it is only 1 ° to 2 ° away from the optimum elevation angle.

And when installing the antenna, the antenna is usually installed on the roof or veranda, and the TV receiver is located in the room, so it is inconvenient to have a person who monitors the TV screen and the person who installs the antenna, or the installer has to carry the portable TV. .

In order to solve the above problems, the present inventors have developed a parabola antenna having an elevation display device to accurately adjust the azimuth angle of the parabola antenna.

1 is a perspective view of a parabolic antenna for satellite broadcasting reception.

Referring to FIG. 1, the feed horn 12 is positioned at the focal position of the reflector 11 by the feed horn support 18, and the reflector 11 is pivotally connected to the support rod 16. The pivot 14 is rotatable up and down with an axis, and the supporting rod 16 is attached to the veranda by the mounting bracket 17. At this time, the elevation display plate 13 is attached to the back of the parabolic surface of the reflecting plate to rotate together in accordance with the rotation of the reflecting plate 11, the guide 15 attached to the pivot 14 so as to be rotatable always points to the center of the earth by gravity It is supposed to be.

In order to install such a parabola antenna, the antenna support rod 16 is fixed to the structure that is easy to install, such as a veranda, using a mounting bracket 17. At this time, the center of the reflecting surface is to face the azimuth.

Subsequently, after fixing the reflecting plate support rod 16, the inclination of the reflecting surface is set to an elevation angle. In this case, when the elevation angle of the reflector is adjusted, the elevation display panel 13 may point to the elevation angle, so that the elevation angle can be easily adjusted. That is, since the elevation angle of the antenna is attached to the reflection plate 11 and displayed on the elevation display plate 13 rotating up and down with the reflection plate as numbers or scales, the guide 15 indicates the elevation angle by moving the reflection plate 11 up and down. What is necessary is just to fix the reflecting plate 11 in the position.

For example, when the elevation angle of the corresponding reception area is 40 °, the reflection plate 11 may be rotated up and down so that the guide 15 indicates a position where the scale of the elevation display plate 13 is 40 °.

In order to quickly install the conventional satellite broadcasting receiver as described above, it is necessary to know the correct azimuth and elevation angles. However, since the azimuth and elevation angles are different for each region, there is a problem in that it cannot be known quickly and accurately.

[Technical Challenges to be Done]

The present invention was devised to solve the above problems, and the object of the present invention is to provide a satellite broadcasting receiver which can be quickly installed by displaying the azimuth and elevation angles of the parabola antenna on the TV screen when the parabola antenna is installed. The present invention provides an azimuth and elevation display device.

In order to achieve the above object, the present invention is provided with a selection terminal for selecting a postal code and a telephone area code, the remote controller for outputting the postal code or telephone area code;

A signal receiving unit installed in the television and receiving a signal transmitted from a remote controller;

A microcomputer that receives and compares the signal applied from the signal receiver;

A memory unit connected to the microcomputer and storing azimuth and elevation angles corresponding to postal codes and telephone area codes of each region; And

Provided is an azimuth and elevation angle display device of a satellite broadcasting receiver connected to the microcomputer and configured to display an azimuth and elevation angles applied through the microcomputer at a corresponding position on a map.

According to the present invention, the azimuth and elevation angles corresponding to the postal code and the telephone area code of each region are stored in the memory section of the television, and the azimuth and elevation angles as described above are applied from a remote controller to one side of the memorized television. Install a signal receiver for receiving a signal. The remote controller is provided with a selection key for selecting a zip code and a telephone area code, and when the zip code or telephone area code of the area where the satellite broadcasting receiver is to be installed is pressed by using the selection key of the remote controller, the signal receiving unit of the TV sets it. The azimuth and elevation angles received and stored in the memory unit are displayed on the screen of the television. Therefore, when the satellite broadcasting receiver is installed, the satellite broadcasting receiver can be installed quickly and accurately by using the azimuth and elevation angles displayed on the on-screen display of the television.

[Composition and Action of Design]

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the azimuth and elevation angles of each region for installing the satellite broadcasting receiver should be obtained according to the following equation.

[Equation 1]

[Equation 2]

here, Δ is the 'satellite longitude-receiving position longitude', and ψ is the latitude of the receiving position.

The azimuth and elevation angles vary depending on the reception position and the position of the satellite. In the case of Mugunghwa Lake Satellite 8, the trajectory is a stationary orbit, which is 116 ° above latitude (0 ° latitude and 116 ° longitude). When the position of the broadcast satellite to be received is determined as described above, the azimuth and elevation angles are determined according to the latitude and longitude of the reception area.

For example, the azimuth and elevation angles corresponding to the zip code and the telephone area code of each area are expressed by using the above equation.

TABLE 1

A block diagram schematically showing an azimuth and elevation display device of a satellite broadcasting receiver according to the present invention.

Referring to Fig. 2, a selection terminal (not shown) for selecting a postal code and a telephone area code is provided in the remote controller 30 that controls the television 80 from the outside, and the remote controller 30 is a number. Pressing the key (not shown) will print the postal code or telephone area code.

A signal receiver 40 is installed outside the television 80 to receive signals corresponding to the zip code and telephone area code of each area transmitted from the remote controller 30.

The microcomputer 50 is connected to the signal receiver 40 to receive a signal applied from the signal receiver 40 and analyze the received signal.

The microcomputer 50 connects the memory unit 60 to store the azimuth and elevation angles corresponding to the zip code and the telephone area code of each area.

In addition, the on-screen display 70 is connected to the microcomputer 50 to display the azimuth and elevation angles applied from the memory unit 60 under the control of the microcomputer 50 at a corresponding position on the map.

The present invention made in this way, first, the azimuth and elevation angles of each region as shown in Table 1 obtained by using the equation and the azimuth and elevation angles are stored in the memory unit 60.

The azimuth and elevation angles of each region are stored in the memory unit 60 according to the zip code and telephone area code, and any one of them is selected by using a selection terminal of the remote controller 30 that controls the television 80 from the outside. Select the terminal that corresponds to the local postal code or telephone area code.

When the terminal corresponding to the postal code is pressed by using the selection terminal of the remote controller 30 and the corresponding postal code is pressed by using the numeric keys, the signal receiving unit 40 of the television receives the postal code signal.

The signal receiver 40 applies a signal applied from the remote controller 30 to the microcomputer 50, and the microcomputer 50 compares and determines a signal corresponding to the applied postal code, and the microcomputer 50. The azimuth and elevation angles corresponding to the postal codes stored in the memory unit 60 are output to the on-screen display unit 70.

The on-screen display unit 70 displays the azimuth and elevation angles applied from the memory unit 60 at a corresponding position on the map, so that the user can quickly recognize and install the azimuth and elevation angles of the location where the satellite broadcasting receiver is to be installed.

[Effect of design]

As described above, the present invention stores the azimuth and elevation angles corresponding to the postal code and the telephone area code of each region in the memory section of the television, and the remote controller at one side of the television in which the azimuth and elevation angles are stored. Provide a signal receiving unit for receiving a signal applied from the. The remote controller is provided with a selection key for selecting a zip code and a telephone area code, and when the zip code or telephone area code of the area where the satellite broadcasting receiver is to be installed is pressed by using the selection key of the remote controller, the signal receiving unit of the TV sets it. The azimuth and elevation angles received and stored in the memory unit are displayed on the screen of the television. Therefore, when the satellite broadcasting receiver is installed, the satellite broadcasting receiver can be installed quickly and accurately by using the azimuth and elevation angles displayed on the on-screen display of the television.

Although the present invention has been described in detail with reference to the accompanying drawings, it is apparent to those skilled in the art that the present invention is not limited thereto and various modifications are possible within the ordinary knowledge of those skilled in the art.

Claims (1)

A remote controller (30) having a selection terminal for selecting a postal code and a telephone area code and outputting the postal code or telephone area code; A signal receiving unit 40 installed in the television and receiving a signal transmitted from the remote controller 30; A microcomputer 50 for receiving a signal applied from the signal receiver 40 and analyzing the signal; A memory unit 60 connected to the microcomputer 50 and storing azimuth and elevation angles corresponding to zip codes and telephone area codes of respective regions; And And an on-screen display unit (70) connected to the microcomputer (50) and displaying the azimuth and elevation angles applied through the microcomputer (50) at a corresponding position on a map.