JPH05284505A - Satellite broadcast transmission/reception system - Google Patents

Abstract

PURPOSE:To prevent the occurrence of missetting by preliminarily storing control contents of each part in a memory as a preset menu and selecting control items of each part to preset data in accordance with the menu read out from this memory. CONSTITUTION:Instructions to be executed by a microcomputer 3 are preliminarily written in a memory 4 as the preset menu, and the menu is read out and displayed as a picture by the microcomputer 3, and items to be controlled by the microcomputer 3 are selected in accordance with this menu and are written in the memory 4 to preset data. Based on the control signal from the microcomputer 3, an actuator 9, a decoder 12 which reproduces the signal from a satellite, etc., are controlled to reproduce an input signal when first and second converters 7 and 8 and the actuator 9 are used, and a polarizer 10, a signal changeover switch 11, the decoder 12, etc., are controlled to reproduce the input signal when the polarizer 10 and the signal changeover switch 11 are used.

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. Currently, the main geostationary satellites in Japan are broadcasting satellites (B
S) and two private communication satellites (CS) are in operation, and plans to launch four private communication satellites (CS) have been announced in the future. Broadcasting service is about to begin. When these satellite broadcasts are input to one satellite broadcast receiver to reproduce the satellite broadcasts, it is necessary to control each part of the receiving system for each satellite broadcast to be received.

[0002]

2. Description of the Related Art In a conventional satellite broadcast receiving system, a CS receiving antenna and a BS receiving antenna are provided, and these are input to a CS receiver and a BS receiver to receive the CS broadcast and the BS broadcast. I was doing. Therefore, since the receiving antenna and the receiver are not the combined type, there is a problem that the receiving system becomes large and the receiving cost becomes high. When multiple satellite broadcasts are to be received by a single satellite broadcast receiving system, the number of control items for controlling each part of the receiving system increases, so it takes time and effort to set the control items, and setting errors are likely to occur. Such a problem also occurs.

[0003]

SUMMARY OF THE INVENTION According to the present invention, each part of a receiving system is controlled and switched by a satellite to be received, the control contents are stored in a memory as a preset menu in advance, and the preset menu is read out by a microcomputer to display the preset menu. A satellite broadcast receiving system that saves the trouble of setting control items and prevents the occurrence of setting errors by selecting items to be controlled by the microcomputer according to the display and writing them in the memory so that they can be preset The purpose is to provide.

[0004]

FIG. 1 is a block diagram of an electric circuit of a main part of a satellite broadcast receiving system, showing an embodiment of the present invention. As shown in FIG. 1, a satellite having a plurality of input terminals. In the broadcast receiver, a memory 4 in which a command to be executed by the microcomputer 3 is preset and written, and a microcomputer 3 that reads the command from the memory 4 and outputs a control signal
And a first converter 7 for converting a signal from a satellite into a first intermediate frequency signal based on a control signal from the microcomputer 3, and a first intermediate frequency signal for tuning into a second intermediate frequency signal. If an actuator 9 is used for the second converter 8 for converting and the receiving antenna, the actuator 9 and the polarizer 10 are used for the input circuit to the input terminal.
If the signal changeover switch 11 is used, the polarizer 10 and the signal changeover switch 11 and the decoder 12 for reproducing the signal from the satellite can be controlled to receive the signal inputted to the input terminal. Display means for displaying a screen based on the display signal output from the microcomputer 3 (in FIG. 1, the display IC 5 and the display device 6).
Is provided, the preset menu stored in advance in the memory 4 is read by the microcomputer 3, the preset menu is displayed on the display means, and the microcomputer 3 is displayed according to the display.
Is selected so that it can be preset by writing the selected item in the memory 4.

[0005]

According to the present invention, with the above configuration, the items controlled by the microcomputer 3 are stored in the memory 4 as a preset menu, the preset menu is read out and displayed on the display screen, and the items controlled by the microcomputer 3 by the receiving satellite. By making it possible to select and preset, it is possible to save the trouble of setting control items and prevent the occurrence of setting mistakes.

[0006]

1 is a block diagram of an electric circuit of a preset device of a satellite broadcast receiving system showing an embodiment of the present invention. Reference numeral 1 is a light receiving unit, and 2 is an input key, which allows an operation signal to be input to the microcomputer 3 via the light receiving unit 1 from the outside by using a remote controller or operates an input key 2 provided in the main body. Even so, an operation signal can be input to the microcomputer 3. Alternatively, only one of them may be used for input. Reference numeral 3 denotes a microcomputer, which reads a command from a memory 4 in which a command to be executed is preset and written, and outputs a control signal. Based on the control signal from the microcomputer 3, a signal from a satellite is transmitted at a first intermediate frequency. First converter 7 for converting into a signal
, A second converter 8 for selecting the same first intermediate frequency signal and converting it into a second intermediate frequency signal, and if an actuator 9 is used for the receiving antenna, the actuator 9
When the polarizer 10 and the signal changeover switch 11 are used in the input circuit to the input terminal, the polarizer 10 and the signal changeover switch 11 and the decoder 12 for reproducing the signal from the satellite are controlled. The signal input to the input terminal can be received. When presetting the control contents by the microcomputer 3, the input key 2 or the remote controller is operated to input the preset signal to the microcomputer 3, and the microcomputer 3 reads the preset menu stored in the memory 4 in advance and outputs it as the display code signal. Convert and output, input to display IC5, display IC
Reference numeral 5 converts the input display code signal into a display signal, outputs it, and inputs it to the display device 6 to display a preset menu on the screen.

FIG. 2 is an explanatory diagram of a screen display example of the satellite preset menu according to the present invention. When the input signal 2 or the remote controller is operated to input a preset signal to the microcomputer 3, first, FIG. indicate. In the figure, a triangular mark indicates a cursor, and the input key 2 is operated to operate the microcomputer 3
When the operation signal is input to the cursor so that the cursor can be moved and the selection item of the antenna input is designated, the screen display is switched to FIG. Figure B is a preset screen for IF input, which allows the signal input to the input terminal 1 (INPUT 1) and input terminal 2 (INPUT 2) of the satellite broadcast receiving system to be selected from the following four combinations. .. : CS in INPUT 1, BS in INPUT 2: Horizontal polarization of CS in INPUT 1, Vertical polarization of CS in INPUT 2: CS and BS in INPUT 1; CS in both INPUT 1 and INPUT 2

The above example is a case where CS and BS are to be received by the same antenna. When this example is selected, it is necessary to change the direction of the antenna between CS reception and BS reception. When the presence or absence of the actuator 9 is selected and the presence of the actuator 9 is selected, the actuator 9 is operated based on the control signal from the microcomputer 3 to change the direction of the antenna so that the CS or BS can receive. .. In addition, the first converter 7 CS
In the case of using a common signal for BS and BS, the local oscillation frequency of the first converter 7 is changed based on the control signal from the microcomputer 3 so that CS and BS having different reception frequencies can receive. If you select other than the above example,
At the time of CS reception, it is necessary to switch the polarizer 10 used in the input circuit to the input terminal of the receiving system depending on whether the horizontal polarization is received or the vertical polarization is received. Polarizer 1 based on control signal
By switching 0, horizontal polarization or vertical polarization can be selected and received.

When the setting is completed in FIG. B and the next screen is selected, the screen switches to C. Fig. C is a screen for selecting the satellite to receive. When "Yes" is selected in the item of "Antenna changeover SW", the input terminal (IN
Signal changeover switch 1 used in the input circuit to PUT 1)
By switching the signal changeover switch 11 based on the control signal from the microcomputer 3 with respect to CS1 and CS2 input to 1, the signal of CS1 or CS2 can be selected and input to the input terminal (INPUT 1). I have to. C
When the setting is completed in the figure and the previous screen of the menu is selected,
Returning to FIG. A, in FIG. A, when the setting decision display is selected with the cursor and the input keys 2 etc. are operated to execute, the set contents are written in the memory 4, the preset is completed, and the next channel is set. When the preset of is selected, it is switched to the diagram of FIG.

FIG. D is a channel preset screen, which allows presetting of each channel designated by the remote controller, for example, the receiving channels of the respective satellites receiving 1 to 5, based on a control signal from the microcomputer 3. The channel to be received by the 2 converter 8 is selected, and the BS decoder or the CS decoder is selected as the decoder 12 for reproducing the signal to reproduce the signal of the receiving channel.
When selecting whether to erase the receiving channel and selecting CH erase, the control signal input from the microcomputer 3 prevents the second converter 8 from skipping the selected channel and entering the receiving state. To do. When the setting confirmation display is selected with the cursor and the input key 2 or the like is operated to execute the setting, the set contents are written in the memory 4 and the preset is completed.

For example, when the channel 1 is selected by the remote controller, the receiving satellite name and the receiving channel are preset in the channel 1, the second converter 8 and the decoder 12 are controlled based on the control signal from the microcomputer 3, and C In the figure, it is preset whether the signal changeover switch 11 is used, and when the signal changeover switch 11 is used, the signal changeover switch 11 is controlled, and in FIG. It is preset whether it is used or not, and when the polarizer 10 is used, the polarizer 10 is controlled, a control signal corresponding to the receiving satellite is input to the first converter 7, and the channel selected by the remote controller can be received. I am trying. Therefore, the items controlled by the microcomputer 3 can be stored in the memory 4 as a preset menu, the preset menu can be read out and displayed on the display screen, and the items controlled by the microcomputer 3 can be selected and preset depending on the satellite to be received. By doing so, it is possible to save the trouble of setting the control items and prevent the occurrence of setting mistakes.

[0012]

As described above, according to the present invention, in the satellite broadcast receiving system, the control contents for controlling each part are stored in the memory in advance as a preset menu, read by the microcomputer and the preset menu is displayed. According to the above, the item controlled by the microcomputer is selected and written in the memory so that the presetting can be performed to save the trouble of setting the control item and prevent the occurrence of a setting error. It greatly contributes to the improvement of operability.

[Brief description of drawings]

FIG. 1 is a block diagram of an essential electric circuit of a satellite broadcast receiving system showing an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a screen display example of a satellite preset menu according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light receiving part 2 Input key 3 CPU 4 Memory 5 Display IC 6 Display device 7 1st converter 8 2nd converter 9 Actuator 10 Polarizer 11 Signal changeover switch 12 Decoder

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04N 5/44 A

Claims (2)

[Claims] 1. A satellite broadcast receiver having a plurality of input terminals, comprising a memory in which instructions executed by a microcomputer are preset and written, and a microcomputer which reads the instructions from the memory and outputs a control signal. A first converter that converts a signal from a satellite into a first intermediate frequency signal based on a control signal from the microcomputer; a second converter that selects the first intermediate frequency signal and converts the first intermediate frequency signal into a second intermediate frequency signal; If an actuator is used for the receiving antenna, and if a polarizer and a signal changeover switch are used in the actuator and the input circuit to the input terminal, the polarizer and the signal changeover switch and the signal from the satellite are used. A satellite broadcast receiving system characterized in that a signal inputted to the input terminal can be received by controlling a decoder for reproducing the Mu. 2. A display means for displaying a screen based on a display signal output from the microcomputer is provided, a preset menu stored in advance in the memory is read out by the microcomputer, and the preset menu is displayed on the display means.
The satellite broadcasting receiving system according to claim 1, wherein presetting is possible by selecting an item controlled by the microcomputer according to the display and writing the selected item in the memory.