KR200276149Y1 - Satellite audio tuner system - Google Patents

Abstract

The present invention relates to a satellite broadcasting receiving system, comprising a dish antenna for collecting a broadcast signal transmitted from a repeater of a communication satellite, and a satellite receiver system comprising an LNB for converting a frequency by amplifying the broadcast signal collected from the dish antenna. According to the present invention, when a user manually selects a reception channel, a keypad for outputting a corresponding selection signal, a front panel forming unit for displaying a channel selected by the user and an operation state, and the reception channel selected by the front panel A tuner unit for receiving a broadcast signal amplified and converted in the LNB, a demodulator for demodulating the broadcast signal received from the tuner unit from an analog signal to a digital signal, and an encrypted broadcast signal by analyzing the electrical signal output from the demodulator. A decoder which decodes the signal, and a video signal of the broadcast signal decoded by the decoder. A mux unit for separating call, audio signal, and data, an audio signal detector for analyzing only an audio signal by analyzing an electrical signal applied from the mux unit, and an audio signal applied from the audio signal detector are decoded into stereo PCM data. A decoder, a audio deck for modulating the PCM data decoded by the decoder into an analog audio signal, and a demodulated and decoded broadcast signal connected to the mux unit and the audio signal detection unit and received by a dish antenna, and decoded broadcast signal. And an audio receiver having a controller configured to control an overall operation for detecting the audio signal from the separated broadcast signal and outputting the digital or analog signal. Satellite broadcasting signal received through the tuner unit When the demodulated and decoded satellite signals are demodulated and decoded by the demodulator and the decoder, and the decoded satellite broadcast signals are separated into video signals, audio signals, and data, respectively, by the mux unit, the controller outputs a predetermined control signal to the audio signal detector to detect only the audio signal. In addition, by decoding the detected audio signal into PCM data and outputting the digital or analog signal, the user can listen to the digital audio broadcast at a low cost.

Description

Satellite audio reception system {Satellite audio tuner system}

The present invention relates to a satellite broadcast receiving system, and more particularly, a satellite for receiving a satellite broadcast signal output from a repeater of a communication satellite and detecting only an audio signal, and outputting the audio signal as a digital or analog audio signal. The present invention relates to an audio receiving system for broadcasting.

In general, satellite broadcasting can link up radio waves to communication satellites equipped with various electronic equipment, relay equipment, and solar panels about 36000 km from the broadcasting station, and receive radio waves emitted from the communication satellites directly from the dish antenna in the home. Because the frequency is different from that of general TV broadcasting, a separate receiver (tuner) is used.

Recently, the Mugunghwa Satellite No. 3 launched to provide ultra-high-speed broadband satellite communication service is equipped with 24 communication repeaters (Ku-band) and 6 broadcast repeaters and 3 additional communication repeaters (Ka-band). As a result, digital satellite broadcasting services are provided that provide more than 30 TV channels and 10 or more channels such as audio channels, and at the same time provide high quality and high sound quality.

To watch the digital satellite broadcasting, a high-performance dish antenna (Parovola Antena) for catching radio waves relayed from satellites, a low noise blockdown converter (LBN) for collecting radio waves captured by the satellite antenna, and a desired broadcast among many received radio waves A receiver that picks out bays and a monitor that reproduces an image (using a general television) are required.

A conventional receiver receives a user selected satellite broadcast through a tuner and demodulates the received satellite broadcast signal into a video signal and an audio signal.

The separated video and audio signals are encrypted according to a specific method, and the encrypted video and audio signals are decrypted and output to the user's television.

Therefore, the conventional receiver is integrated with a video receiving system and an audio receiving system that receive satellite video signals, audio signals, and various data and output them to the television of each user. You can watch satellite broadcasting.

However, in order to listen to audio broadcasting of satellite broadcasting only, there is a problem that a user needs to purchase an expensive receiver in which a video receiving system and an audio receiving system are integrated.

The present invention has been made in view of the above-described problems, and its purpose is to receive a broadcast signal output from a repeater of a communication satellite through a dish antenna

Analyze only the audio signal by analyzing the broadcast signal received through the dish antenna

In addition, this audio signal is output as a digital or analog audio signal so that the user can listen to the audio broadcasting of satellite broadcasting at low cost.

1 is a conceptual diagram illustrating a satellite broadcast receiving system according to an embodiment of the present invention.

2 is a block diagram illustrating an audio receiver according to an embodiment of the present invention.

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

1: communication satellite 10: dish antenna

20: LNB (Low Noise Blockdown converter)

30: audio receiver

31: front part 31a: keypad

31b: display unit 32: tuner unit

33: demodulator 34: decoder

35: mux unit 36: audio signal detection unit

37: decoder section 38: audio deck

39: control unit

Configuration of the present invention for achieving the above object is made as follows.

In the satellite receiving system comprising a dish antenna for collecting a broadcast signal transmitted from a repeater of the communication satellite, and an LNB for amplifying the broadcast signal collected by the dish antenna to convert a frequency,

A front panel unit configured to form a keypad for outputting a selection signal corresponding to the reception channel when the user manually selects a reception channel, and a display unit for displaying a channel and an operation state selected by the user;

A tuner unit configured to receive a broadcast signal amplified and converted by the LNB according to a reception channel selected by the front panel unit;

A demodulator for demodulating the broadcast signal received by the tuner from an analog signal to a digital signal;

A decoder which analyzes the electrical signal output from the demodulator and decrypts the encrypted broadcast signal;

A mux unit for separating the broadcast signal decoded by the decoder into a video signal, an audio signal, and data;

An audio signal detector for detecting only an audio signal by analyzing an electrical signal applied from the mux unit;

A decoder which decodes the audio signal applied by the audio signal detector into stereo PCM data;

An audio deck for modulating the PCM data decoded by the decoder into an analog audio signal;

It is connected to the mux unit and the audio signal detection unit to demodulate and decode the broadcast signal received by the dish antenna, analyzes the decoded broadcast signal, and separates the video signal, the audio signal and the data, and detects only the audio signal from the separated broadcast signal. It characterized in that it comprises an audio receiver having a control unit for controlling the overall operation for outputting a digital or analog signal.

Another configuration of the present invention for achieving the above object is made as follows.

Hereinafter, a preferred embodiment of the present invention with reference to the accompanying drawings in detail as follows.

1 is a conceptual diagram illustrating a satellite broadcast receiving system according to an embodiment of the present invention.

2 is a block diagram illustrating an audio receiver according to an embodiment of the present invention.

1 and 2, the audio receiving system of the present invention amplifies a dish antenna 10 collecting a broadcast signal from a repeater of a communication satellite 1 and a broadcast signal collected by the dish antenna 10. LNB 20 converting the 950MHz to 2150MHz frequency band and the broadcast signal converted by the LNB 20 and separated into a video signal and an audio signal to output only an audio signal as a digital or analog signal. It consists of.

As shown in FIG. 2, the audio receiver 30 includes a front part 31, a tuner 32, a demodulator 33, a decoder 34, a mux 35 and a mux 35. And an audio signal detector 36, a decoder 37, an audio deck 38, and a controller 39.

The front panel unit 31 forms a keypad 31a for outputting a selection signal corresponding to the user's manual selection of a reception channel and a display unit 31b for displaying a channel and an operation state selected by the user.

The tuner 32 receives a broadcast signal amplified and converted by the LNB 20 according to the reception channel selected by the front panel 31 and outputs an electric signal corresponding thereto.

The demodulator 33 demodulates the broadcast signal received by the tuner 32 from an analog signal to a digital signal and outputs an electrical signal corresponding thereto.

The decoder 34 analyzes the electrical signal output from the demodulator 33 to decode the encrypted broadcast signal and outputs the corresponding electrical signal.

The MUX unit 35 separates the broadcast signal decoded by the decoder 34 into a video signal, an audio signal, and data, and outputs an electrical signal corresponding thereto.

The audio signal detector 36 analyzes an electrical signal applied from the mux unit 35 to detect only an audio signal and outputs an electrical signal corresponding thereto.

The decoder 37 decodes the audio signal applied by the audio signal detector 36 into stereo pulse code modulation (PCM) data and outputs an electrical signal corresponding thereto.

The audio deck unit 38 modulates the analog audio channel of the PCM data decoded by the decoder unit 37 and outputs a corresponding electrical signal to an external device so that a user can listen to the audio deck.

The control unit 39 is connected to the mux 35 and the audio signal detection unit 36 to demodulate and decode the broadcast signal received by the dish antenna, and analyzes the decoded broadcast signal to separate the video signal, the audio signal, and the data. In addition, the audio signal is detected from the separated broadcast signal and the overall operation for outputting the digital or analog signal is controlled.

Referring to the operation of the audio receiving system of the present invention made as described above are as follows.

First, when a user selects an operation of a reception channel and an audio receiver using the keypad 31a of the front panel unit 31, the keypad 31a outputs a corresponding selection signal to the controller 39, and the controller ( 39 analyzes the selection signal applied and outputs a control signal to the tuner 32 to receive the audio channel selected by the user.

The tuner 32 receives a broadcast signal corresponding to a channel selected by a user according to a control signal output from the controller 39 and outputs a corresponding satellite broadcast signal to the demodulator 33.

The demodulator 33 demodulates the satellite broadcast signal received by the tuner 32 from an analog signal to a digital signal, and outputs an electrical signal corresponding to the decoder 34 to the decoder 34. The encrypted satellite broadcast signal applied by the demodulator 33 is decoded and the corresponding electrical signal is output to the mux unit 35.

At this time, when the encrypted satellite broadcast signal received through the tuner unit 32 is demodulated and decrypted through the demodulator 33 and the decoder 34, the controller 39 transmits a predetermined control signal to the mux unit 35. ) Is separated into a video signal, an audio signal and data from the decoded satellite broadcasting signal.

When the satellite broadcasting signal is separated into the video signal, the audio signal, and the data in the mux unit 35, the controller 39 outputs a predetermined control signal to the audio signal detector 36, and the audio signal detector 36 Analyze the electrical signal output from the mux unit 35 detects only the audio signal and outputs the corresponding electrical signal to the decoding unit 37.

The decoder 37 modulates the audio signal applied by the audio signal detector 36 into PCM data and outputs the audio signal to the audio deck unit 38. The audio deck unit 38 is output from the decoder 37. Decodes the PCM data, modulates the digital signal to analog signal, and outputs the corresponding signal to external devices such as speakers and amplifiers.

Therefore, the user can listen to high quality digital audio broadcasting at low cost by separating only the audio signal portion from the satellite broadcasting signal output from the communication satellite.

As described above, according to the present invention, when the satellite broadcast signal received through the tuner unit is demodulated and decoded through the demodulator and the decoder, and the decoded satellite broadcast signal is separated into the video signal, the audio signal, and the data by the mux unit, The controller outputs a predetermined control signal to the audio signal detector to detect only the audio signal, and decodes the detected audio signal into PCM data and outputs the digital or analog signal so that the user can listen to high quality digital audio broadcasting at a low cost. have.

Claims (1)

In the satellite receiving system comprising a dish antenna 10 for collecting broadcast signals transmitted from the repeater of the communication satellite 1, and an LNB for amplifying a broadcast signal collected by the dish antenna 10 to convert a frequency, A front panel unit 31 which forms a keypad 31a for outputting a corresponding selection signal when the user manually selects a reception channel, and a display unit 31b for displaying a channel and an operation state selected by the user; A tuner unit 32 for receiving a broadcast signal amplified and converted by the LNB 20 according to the reception channel selected by the front panel unit 31; A demodulator (33) for demodulating the broadcast signal received by the tuner (32) from an analog signal to a digital signal; A decoder (34) for analyzing the electrical signal output from the demodulator (33) and decrypting the encrypted broadcast signal; A mux unit 35 for separating the broadcast signal decoded by the decoder 34 into a video signal, an audio signal, and data; An audio signal detector 36 which analyzes an electrical signal applied from the mux unit 35 and detects only an audio signal; A decoder (37) for decoding the audio signal applied by the audio signal detector (36) into stereo PCM data; An audio deck (38) for modulating the PCM data decoded by the decoder (37) into an analog audio signal; It is connected to the mux unit 35 and the audio signal detection unit 36 to demodulate and decode the broadcast signal received by the dish antenna, analyze the decoded broadcast signal, and separate the video signal, the audio signal and the data, and separate the broadcast. And an audio receiver (30) having a control unit (39) for controlling an overall operation for detecting only an audio signal from a signal and outputting the audio signal as a digital or analog signal.