JPH06284429A - Satellite broadcast receiver - Google Patents

Abstract

PURPOSE:To allow one MUSE-NTSC converter to be used for plural satellite broadcast receivers by using a changeover means provided to a BS built-in television receiver to select either of two different satellite broadcast receivers on purpose. CONSTITUTION:The switching operation of a television receiver 10 with a satellite broadcast function is controlled by, e.g. a microcomputer 12. That is, when a satellite broadcast reception section 11 receives a MUSE signal, it is recognized by the microcomputer 12 and a control signal is outputted to throw SW1, SW2 of a changeover means 13 to the position (b). Furthermore, when the reception section 11 of the receiver 10 receives an NTSC signal, it is discriminated by the microcomputer 12 and provides an output of a control signal to throw the SW1, SW2 of the changeover means 13 to the position (a). That is, only one MUSE-NTSC converter 20 is used to receive a MUSE broadcast or an NTSC broadcast.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a satellite broadcast receiver, and more particularly to a satellite broadcast receiver that can be used in combination with a single MUSE-NTSC converter and a plurality of satellite broadcast receivers.

[0002]

2. Description of the Related Art In recent years, the spread and spread of satellite broadcasting has been remarkable and the number of broadcasting channels has been increasing. In addition, MUSE high-definition broadcasting (hereinafter referred to as MUSE broadcasting), which is different from conventional NTSC broadcasting, has also started using satellite broadcasting.

This MUSE broadcasting was considered because high-definition broadcasting generally has an enormous amount of information as compared with conventional NTSC broadcasting, and it cannot be transmitted not only by terrestrial broadcasting but also by satellite broadcasting having a relatively wide band. Is a high-definition broadcast compressed transmission system.

Therefore, in order to receive this MUSE broadcast, a dedicated MUSE broadcast receiver is required.
Device for converting SE signal to NTSC signal (MUSE-N
By connecting using a TSC converter, it is possible to receive even in the conventional NTSC satellite broadcast receiving apparatus. In other words, as described above, this MUSE
-NTSC converter is MU which is high definition broadcasting.
Since it has a function of lowering the number of scanning lines for SE signals from 1125 to 525 for NTSC signals, the conventional N
It is one of the necessary system for viewing MUSE broadcasting with a TSC satellite receiving device.

In general, as an apparatus system for viewing MUSE broadcasting, for example, a BS antenna and a satellite broadcasting receiver (BS tuner) for receiving MUSE signals by satellite broadcasting, and a high-definition television receiver for displaying MUSE broadcasting. And there is a MUSE broadcast receiver. Further, in the case of viewing using a conventional satellite broadcast receiving device or a television receiver, a MUSE-NTSC converter must be incorporated in this device system.

By the way, the connection between the MUSE-NTSC converter and the satellite broadcast receiving apparatus can be made by connecting the detection output and the AFC input of the satellite broadcast receiving apparatus to the MUSE-NTSC converter, respectively.

However, connecting one MUSE-NTSC converter to a plurality of satellite broadcast receiving devices is not possible because of the detection input of the MUSE-NTSC converter and the AFC.
It is impossible as long as the number of outputs is one. Therefore, it is necessary to connect one MUSE-NTSC converter to each satellite broadcast receiving device.

[0008]

As described above, in the conventional satellite broadcast receiving apparatus, one MUSE-NTSC is used.
It was not possible to connect the converter to multiple satellite receivers.

Therefore, the present invention has been made in view of the above problems, and enables one MUSE-NTSC converter to be connected to a plurality of satellite broadcast receiving devices, and at the same time, MUSE high-definition broadcast and NTSC system. It is an object of the present invention to provide a satellite broadcast receiving device capable of receiving the above satellite broadcast.

[0010]

According to a first aspect of the present invention, there is provided a satellite broadcasting receiving apparatus, wherein a satellite broadcasting receiving section for receiving satellite broadcasting, an internal detection output terminal, an internal AFC input terminal and a video signal are external. A video input terminal to be input, a display processing unit for displaying and processing the signal input from this video input terminal, an external detection input terminal for inputting a detection output from the outside, an AFC to an external AFC input. A first satellite broadcast receiving apparatus comprising: an external AFC output terminal for outputting an output; and a switching means for selectively switching between the internal detection output and the internal AFC input and the external detection output and the external AFC input for input / output. A satellite broadcast receiving device that is connected to the outside of the first satellite broadcast receiving device and is different from the first satellite broadcast receiving device, the satellite broadcast receiving unit receiving satellite broadcast, and the external detector. A detection output terminal for outputting a detection output to the input terminal, an AFC input terminal for inputting the AFC output from the external AFC output terminal, a video input terminal for externally inputting a video signal, and an input for this video input terminal A second satellite broadcast receiving apparatus having a signal processing unit for processing a signal, and a detection output from the first satellite broadcast receiving apparatus are input, and the first satellite selected by the switching unit.
When the satellite signal received by one of the satellite broadcast receiving unit and the second satellite broadcast receiving unit is a MUSE signal, this is sent to NT.
A MUSE-NTSC converter for converting into an SC signal and outputting as a video signal to the first and second satellite broadcast receiving devices is provided.

A satellite broadcast receiving apparatus according to a second aspect of the present invention is the satellite broadcast receiving apparatus according to the first aspect, wherein in the switching means, the first satellite broadcast receiving apparatus is MUSE.
When a broadcast is received, the internal detection input and the internal AF
When C output is selected and other than MUSE broadcasting is received, the external detection output and external AFC input are selected.

A satellite broadcast receiving apparatus according to a third aspect of the present invention is the satellite broadcast receiving apparatus according to the first aspect, wherein the switching means is provided when the power source of the first satellite broadcast receiving apparatus is off. Selects the external output and the external AFC input.

A satellite broadcast receiving apparatus according to a fourth aspect of the present invention is the satellite broadcast receiving apparatus according to the first aspect, wherein the switching means is provided when the power source of the second satellite broadcast receiving apparatus is off. Is characterized by selecting the internal detection output and the internal AFC input. A satellite broadcast receiving apparatus according to the present invention according to claim 5 is the satellite broadcast receiving apparatus according to claim 1, wherein the switching means can be switched by setting of the first satellite broadcast receiving apparatus. And

[0014]

In the present invention, the switching means can switch the input / output signals from the external detection input terminal and the external AFC output terminal, and the internal detection output and the internal AFC input. As a result, one MUSE-N
It becomes possible to use the TSC converter in a plurality of satellite broadcast receiving devices.

[0015]

EXAMPLES Examples will be described with reference to the drawings. 1 is a block diagram showing an embodiment of a satellite broadcast receiving apparatus according to the present invention.

In FIG. 1, a television receiver 10 having a satellite broadcast receiving function as a satellite broadcast receiving device (hereinafter,
A television with a built-in BS) and MUSE-NTSC
It is a block diagram at the time of connecting the converter 20 and VTR 30 with built-in BS.

The built-in BS television receiver 10 is a BS
The satellite broadcast receiving unit 11 connected to the antenna 40 for receiving satellite broadcast (hereinafter referred to as BS broadcast) and the BS broadcast received by the satellite broadcast receiving unit 11 are discriminated as MUSE broadcast or NTSC broadcast. Correspondingly, it has a microcomputer 12 for supplying a control signal so as to switch the switching means which will be described later, and two switching means, and inputs the detection signal from the satellite broadcast receiving section 11 to the input terminal b, and external detection input. SW1 which inputs the detection signal from the terminal T7 to the input end a, switches between the detection signals at the input ends a and b and supplies it to the internal detection output terminal T2, and the external AFC output terminal T
Switching means 13 provided with SW2 for switching the output end a for outputting to 8 and the output end b for supplying to the satellite broadcast receiving part 11 to output the AFC signal from the internal AFC input terminal T3, and the external input. A BS-IF terminal T1 for inputting a BS-IF signal from a display processing unit 14 for displaying and processing the generated video signal and displaying it on a screen and for supplying the BS-IF signal from a BS antenna (including a BS converter) 40 to the satellite broadcast receiving unit 11.
An internal detection output terminal T2 for outputting a detection signal from the switching means 13, and a MUSE-NTSC converter 20.
Internal AFC input terminal T3 to input AFC signal from
A video input terminal T4 for inputting a video signal from the MUSE-NTSC converter 20, an external detection input terminal T7 for inputting a detection signal from another satellite broadcast receiving section,
External AFC that outputs AFC signal to other satellite broadcasting receiver
It has an output terminal T8.

Although not shown, the MUSE-NTSC converter 20 has a MUSE-NTSC converter for receiving a detection signal (MUSE signal) from the BS built-in television 10 and converting it to an NTSC signal.
A detection input terminal T10 for inputting a detection signal from the built-in television 10, an AFC output terminal T11 for outputting an AFC signal from the MUSE-NTSC converter 20, and a MUS
A first video output terminal T12 for outputting a first video signal from the E-NTSC converter 20, and the MUSE-NT
The second video output terminal T12 for outputting the second video signal from the SC converter 20 is provided.

The BS built-in VTR 30 has a BS antenna 40.
Connected to the other end of the satellite broadcasting reception unit 31 for receiving BS broadcasting, a display processing unit 32 for displaying and processing an externally input video signal, and a BS-I from the BS antenna 40.
A BS input terminal T5 for inputting the F signal and supplying it to the satellite broadcast receiving section 31, and a detection output terminal for outputting a detection signal from the satellite broadcast receiving section 31 to an external detection input terminal T7 of the BS built-in television. T6, an AFC input terminal T9 for inputting an AFC signal from the television with built-in BS 10 and supplying it to the satellite broadcast receiving section 31, and MUSE
A video input terminal T14 for inputting a video signal from the NTSC converter 20 and supplying it to the signal processing section 32.

In the above, the television with built-in BS 10
Between the internal detection output terminal T2 and the detection input terminal T10 of the MUSE-NTSC converter 20, and between the internal AFC input terminal T3 of the television 10 and the MUSE-NTSC converter 2
0 between the AFC output terminals T11, the video input terminal T4 of the television 10 and the first of the MUSE-NTSC converter 20.
Between the video output terminals T12, the external detection input terminal T7 of the television 10 and the detection output terminal T6 of the BS built-in VTR 30.
Between the external AFC output terminal T8 of the television 10 and BS
Between the AFC input terminals T9 of the built-in VTR30, MUSE-N
The second video output terminal T13 of the TSC converter 20 and BS
The video input terminals T14 of the built-in VTR 30 are connected to each other.

Next, the operation of this embodiment will be described with reference to FIG.

The BS broadcast received by the BS antenna 40 is BS
It is input to the built-in television 10 and received by the satellite broadcast receiving unit 11. The detection signal received here is the switching means 1
3 is supplied to the input terminal b of SW1.

Here, for example, SW1 of the switching means 13
, And SW2 are fixed to the b side, the detection signal output from the satellite broadcast receiving section 11 to the input terminal b is sent through the SW1 of the switching means 13 to the internal detection output terminal T2 of the BS built-in television 10. Output from MUSE
-It is supplied to the detection input terminal T10 of the NTSC converter.

In addition, the MUSE-NTSC converter 20
The AFC signal output from the AFC output terminal T11 of
It is inputted to the internal AFC input terminal T3 of the television 10 with built-in S and inputted to the satellite broadcast receiving section 11 through SW2 of the switching means 13. At this time, for example, when the broadcast received by the satellite broadcast receiving unit 11 is the MUSE broadcast, the MUSE-NTSC converter 20 outputs the M video from the first video output terminal T12 and the second video output terminal T13.
USE-NTSC converter 20 sends MUSE signal to NT
The video signal converted into the SC signal is output. This signal is supplied to the video input terminal T4 of the television 10 with built-in BS, input to the display processing section 14 and displayed on the display.

Further, SW1 and SW2 of the switching means 13
Are fixed on the a side, respectively, BS
The detection signal of the BS broadcast received by the satellite broadcast receiving section 31 of the built-in VTR 30 is supplied from the satellite broadcast receiving section 31 to the detection output terminal T6. It is input to the detection input terminal T2. This signal is input to the detection input terminal T10 of the MUSE-NTSC converter 20 through SW1 which is the switching unit 13.

Then, the MUSE-NTSC converter 2
The AFC signal output from the AFC output terminal T11 of 0 is
It is inputted to the internal AFC input terminal T3 of the television 10 with built-in BS and supplied to the external AFC output terminal T8 through SW2 of the switching means 13. The AFC signal output from the external output terminal T8 is supplied to the AFC input terminal T9 of the BS built-in VTR 30 and input to the satellite broadcast receiving section 31. At this time, for example, when the broadcast received by the satellite broadcast receiving unit 31 of the BS built-in VTR 30 is MUSE broadcast, from the first video output terminal T12 and the second video output terminal T13 of the MUSE-NTSC converter 20, This M
USE-NTSC converter 20 sends MUSE signal to NT
The video signal converted into the SC signal is output. This signal is supplied to the video input terminal T14 of the VTR 30 with built-in BS and input to the display processing section 32. In the present embodiment, the switching operation of the switching means 13 is, for example, the microcomputer 12 of the television 10 with built-in BS.
Is controlled by. That is, when the satellite broadcast receiving section 11 of the television with built-in BS receives the MUSE signal, it is recognized by the microcomputer 12 and, at the same time, SW1 which is the switching means 13.
And a control signal is output to switch SW2 to the b side.

When an NTSC signal is received by the satellite broadcast receiving section 11 of the BS built-in television 10, the microcomputer 12 determines the NTSC signal and at the same time switches SW1 and SW2 of the switching means 13 to the a side. The control signal is output to switch to. That is, by switching to the side a by the switching means 13,
The NTSC signal received from the S antenna 40 is received and detected not by the satellite broadcast receiving unit 11 on the television 10 side but by the other satellite broadcast receiver, that is, the satellite broadcast receiving unit 31 on the BS built-in VTR 30 side. Become. In this case, since the received BS broadcast is an NTSC system signal, the MU connected to the BS built-in VTR 30.
It is not necessary to convert the NTSC signal by the SE-NTSC converter 20.

In this embodiment, however, the MUSE-NTSC converter 20, which is connected to the BS built-in VTR 30 as described above, includes a conversion unit (not shown) for converting a MUSE signal into an NTSC signal. Since it has a switching means for automatically switching between an input NTSC signal and a circuit portion provided so as to output the NTSC signal as it is, even if an NTSC signal is received, this NTSC signal is switched to this switching. It is switched so that the NTSC signal is output as it is without being converted by the means, and the image output of this NTSC signal is set to B.
The signal can be supplied to the signal processing unit 32 of the VTR 30 with built-in S or the display processing unit 14 of the television 10 with built-in BS. Therefore, according to the present embodiment, the switching means 13 provided in the BS built-in television, for example, BS
Built-in television 10 side or BS built-in VTR 30
It is designed to be able to use two different satellite broadcasting receivers properly, like the one on the side. That is, one MUSE-NT
MUSE broadcasting or conventional NT only with SC converter
It is possible to receive the SC broadcast, and the satellite broadcast receiving unit 11 of the television 10 with built-in BS and the satellite broadcast receiving unit 31 of the VTR 30 with built-in BS can be shared.

In this embodiment, one MUSE-NT is used.
Connect to the BS built-in television 10 and the BS built-in VTR 30 which are satellite broadcasting receiving devices by using an SC converter,
Although it has been described that these are switched by the switching means, for example, a plurality of external detection and AFC terminals of the television with built-in BS are provided, a plurality of satellite broadcast receiving devices connected to them are provided, and the switching means is used for the plurality of satellite broadcasts. The number of switching ends may be increased so that the receiving device can be selected.

In the present embodiment, the switching operation of the switching means 13 has been described using the microcomputer 12, but
Of course, this switching operation has the same effect when the switching operation is performed by, for example, turning on / off the power of the television 10 with built-in BS, turning on / off the power of the VTR 30 with built-in BS, or a user setting. is there.

[0031]

As described above, according to the present invention, one MUSE-NTSC converter can be used in a plurality of satellite broadcast receiving devices.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a satellite broadcast receiving apparatus according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Satellite broadcast receiving device (BS built-in television) 11 ... BS built-in television satellite broadcast receiving part 12 ... BS built-in television microcomputer 13 ... Switching means (SW1, SW2) 14 ... Display processing part 20 ... MUSE-NTSC converter 30 ... VTR with built-in BS 31 ... VTR satellite receiver with built-in BS 32 ... Signal processing unit 40 ... Off BS antenna conversion unit T2 ... Internal detection output terminal T3 ... Internal AFC input terminal T7 ... External detection input terminal T8 ... External AFC output terminal T4, T14 ... Video input terminals

Claims (5)

[Claims] 1. A satellite broadcast receiving unit for receiving satellite broadcasts, an internal detection output terminal, an internal AFC input terminal, a video input terminal to which a video signal is externally input, and a signal input from the video input terminal. Display processing unit for display processing and screen display, external detection input terminal for inputting detection output from outside, and external AF for outputting AFC output to external AFC input
A first satellite broadcast receiving apparatus comprising a C output terminal, and switching means for selectively switching between the internal detection output and internal AFC input and the external detection output and external AFC input for inputting and outputting. A satellite broadcast receiving device that is connected to the outside of the satellite broadcast receiving device and is different from the first satellite broadcast receiving device, and outputs a detection output to a satellite broadcast receiving unit that receives satellite broadcasts and the external detection input terminal. AFC that inputs the detection output terminal and the AFC output from the external AFC output terminal
A second satellite broadcast receiving device including an input terminal, a video input terminal to which a video signal is externally input, and a signal processing unit for processing a signal input from the video input terminal; and the first satellite When the detection output from the broadcast receiving device is input and the satellite signal received by one of the first satellite broadcast receiving section and the second satellite broadcast receiving section selected by the switching means is a MUSE signal, this is output. A MUSE-NTSC converter for converting into an NTSC signal and outputting it as a video signal to the first and second satellite broadcast receiving devices, a satellite broadcast receiving device. 2. The switching means according to claim 1, wherein when the satellite broadcast receiving device receives a MUSE broadcast, the switching means selects the internal detection output and the internal AFC input, and when the non-MUSE broadcast is received. Is the external detection input and external AFC
The output according to claim 1, wherein the output is selected. 3. The switching means according to claim 1, wherein
2. The satellite broadcast receiving apparatus according to claim 1, wherein the external detection input and the external AFC output are selected when the power of the satellite broadcast receiving apparatus is off. 4. The switching means according to claim 1,
The satellite broadcast receiving apparatus according to claim 1, wherein the internal detection output and the internal AFC input are selected when the power of the satellite broadcast receiving apparatus is off. 5. The switching means according to claim 1, wherein
2. The satellite broadcast receiving apparatus according to claim 1, wherein the switching is performed according to the setting of the satellite broadcast receiving apparatus.