KR20040084589A - One-way digital radio receiver for listening to moving picture advertizement of subway train - Google Patents
One-way digital radio receiver for listening to moving picture advertizement of subway train Download PDFInfo
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- KR20040084589A KR20040084589A KR1020030019769A KR20030019769A KR20040084589A KR 20040084589 A KR20040084589 A KR 20040084589A KR 1020030019769 A KR1020030019769 A KR 1020030019769A KR 20030019769 A KR20030019769 A KR 20030019769A KR 20040084589 A KR20040084589 A KR 20040084589A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
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Abstract
Description
본 발명은 현재 지하철에서 시행중인 동영상 광고의 음성을 청취하기 위한 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰에 관한 것으로서, 보다 상세하게는 300MHz 이하의 미약전파를 수신하여 디지탈 신호로 변환하고, 변환된 디지탈 신호를 음성신호로 복원하는 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰에 관한 것이다.The present invention relates to a unidirectional digital wireless earphone for listening to the subway video advertisement for listening to the voice of the video advertisement currently being implemented in the subway, and more particularly, receives a weak radio wave of 300MHz or less, converts it into a digital signal, and converts the converted digital signal. The present invention relates to a unidirectional digital wireless earphone for listening to subway video advertisement, which restores a signal to a voice signal.
현재 지하철에서 시행중인 동영상 광고는 음성을 전달하지 않기 때문에 영상을 통해서만 유저에게 필요한 정보를 전달하므로 광고의 효과를 극대화시키지 못하고 있다.Since the video advertisement currently in the subway does not transmit the voice, the user does not maximize the effectiveness of the advertisement because it delivers the necessary information to the user only through the video.
따라서, 본 발명의 목적은 현재 지하철에서 시행중인 동영상 광고를 보다 효율적으로 이용하기 위하여 동영상 광고를 보는 것과 동시에 광고의 음성을 듣고 싶은 유저에게 선별적으로 전달할 수 있는 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰을 제공하는 것이다.Accordingly, an object of the present invention is a one-way digital wireless earphone for listening to subway video advertisement, which can selectively deliver the video advertisement to a user who wants to listen to the voice of the advertisement while simultaneously watching the video advertisement in order to use the video advertisement currently being implemented in the subway more efficiently. To provide.
도 1은 본 발명에 따른 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰과 상기 단방향 디지탈 무선 이어폰으로 신호를 전송하는 송신부를 도시한 블록도1 is a block diagram illustrating a transmitter for transmitting a signal to a unidirectional digital wireless earphone for listening to a subway video advertisement and the unidirectional digital wireless earphone according to the present invention.
상기와 같은 목적을 달성하기 위한 본 발명에 따른 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰은 송신부에서 송신하는 전송신호를 수신하는 수신안테나와, 300MHz 이하의 미약전파신호대역을 필터링하는 대역통과필터와, 상기 대역의 RF 신호를 증폭하는 신호증폭부와, 증폭된 RF 신호를 압축 디지탈 신호로 복원하는 주파수 변조부와, 압축 디지탈 신호를 풀어 노말 디지탈 신호로 복원하는 복원부와, 상기 노말 디지탈 신호를 아날로그 신호로 변조하는 D/A 변환부와, 상기 아날로그 신호중 고역신호를 제거하는 저역통과필터부와, 상기 저역통과필터부를 통과한 신호를 증폭하는 파워엠프부와, 상기 신호를 음성신호로 변화시키는 스피커로 구성되는 것을 특징으로 한다.In order to achieve the above object, the unidirectional digital wireless earphone for subway video advertisement listening according to the present invention includes a reception antenna for receiving a transmission signal transmitted from a transmitter, a band pass filter for filtering a weak radio signal band of 300 MHz or less; A signal amplifier for amplifying the RF signal of the band, a frequency modulator for reconstructing the amplified RF signal into a compressed digital signal, a reconstruction unit for decompressing the compressed digital signal and reconstructing the normal digital signal, and an analog signal of the normal digital signal. A D / A conversion unit for modulating the signal, a low pass filter unit for removing a high pass signal of the analog signal, a power amplifier unit for amplifying a signal passing through the low pass filter unit, and a speaker for converting the signal into a voice signal Characterized in that consists of.
이하, 첨부도면을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1을 참조하면, 본 발명에 따른 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰(100)은 송신부(200)에서 송신하는 전송신호를 수신하는 수신안테나 (110)와, 300MHz 이하의 미약전파신호대역을 필터링하는 대역통과필터(120)와, 상기 대역의 RF 신호를 증폭하는 신호증폭부(130)와, 증폭된 RF 신호를 압축 디지탈신호로 복원하는 주파수 변조부(140)와, 압축 디지탈 신호를 풀어 노말 디지탈 신호로 복원하는 복원부(150)와, 상기 노말 디지탈 신호를 아날로그 신호로 변조하는 D/A 변환부(160)와, 상기 아날로그 신호중 고역신호를 제거하는 저역통과필터부 (170)와, 상기 저역통과필터부를 통과한 신호를 증폭하는 파워엠프부(180)와, 상기 신호를 음성신호로 변화시키는 스피커(190)로 구성된다.Referring to FIG. 1, the unidirectional digital wireless earphone 100 for listening to a subway video advertisement according to the present invention includes a reception antenna 110 for receiving a transmission signal transmitted from the transmitter 200 and a weak radio signal band of 300 MHz or less. A band pass filter 120 for filtering, a signal amplifier 130 for amplifying the RF signal of the band, a frequency modulator 140 for reconstructing the amplified RF signal into a compressed digital signal, and a compressed digital signal A restoring unit 150 for restoring a normal digital signal, a D / A converter 160 for modulating the normal digital signal into an analog signal, a low pass filter unit 170 for removing a high pass signal from the analog signal, And a power amplifier unit 180 for amplifying the signal passing through the low pass filter unit, and a speaker 190 for converting the signal into a voice signal.
상기와 같은 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰(100)을 사용하기 위해서는 송신부(200)에서 아날로그의 음성신호를 디지탈 신호로 변환하는 기술이 선행되어야 한다. 또한, 상기 디지탈 신호를 어느 곳에서 전파할것인가를 선택하여야 한다. 현재 시행중인 지하철 광고에서 음성신호의 송신은 인박스와 아웃박스에서 전송하며, 인박스의 경우 영상매체 안에 모둘화해서 송신하는 형태이고, 아웃박스의 경우 미약전파를 송신하는 형태이며, 특히 아웃박스의 경우의 미약전파의 특성상 음영지역을 커버하기 위하여 다수의 송신기가 지하철 차내에 설치된다.In order to use the unidirectional digital wireless earphone 100 for listening to a subway video advertisement as described above, a technique of converting an analog voice signal into a digital signal in the transmitter 200 must be preceded. In addition, it is necessary to select where to propagate the digital signal. In the subway advertisement currently in operation, voice signals are transmitted from inbox and outbox, and in the case of inbox, it is a form that transmits them all in the video media, and in the case of outbox, it transmits weak radio waves, especially outbox. In the case of the weak radio wave in the case of a number of transmitters are installed in the subway car to cover the shadow area.
따라서, 본 발명에 따른 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰은 지하철 차내에 설치된 아웃박스의 송신부로 부터 300MHz 이하의 미약전파를 수신하도록 되어 있다.Accordingly, the unidirectional digital wireless earphone for subway video advertisement listening according to the present invention is configured to receive a weak radio wave of 300 MHz or less from a transmitter of an out box installed in a subway car.
상기 송신부(200)는 음성신호(210)를 디지탈 신호로 변환하는 A/D 변환부 (220)와, 상기 디지탈 신호를 압축하는 압축부(230)와, 상기 디지탈 신호를 합성 변조하는 고주파 변조부(240)와, 상기 변조된 신호를 증폭하는 증폭부(250)와, 증폭된 신호에서 고역의 주파수를 제거하는 저역통과필터부(260)와, 상기 신호를 송신하는 송신 안테나(270)로 구성된다.The transmitter 200 includes an A / D converter 220 for converting the voice signal 210 into a digital signal, a compressor 230 for compressing the digital signal, and a high frequency modulator for synthesizing the digital signal. A 240, an amplifier 250 for amplifying the modulated signal, a low pass filter 260 for removing a high frequency frequency from the amplified signal, and a transmission antenna 270 for transmitting the signal. do.
따라서, 본 발명에 따른 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰(100)은 상기 아웃박스에서 송신하는 미약전파를 수신하여 RF 신호를 디지탈 신호로 복원하고, 압축된 디지탈 신호를 풀어 음성신호로 변환하여, 수신율을 높일 수 있으며, 신호 오류를 낮출 수 있다.Accordingly, the unidirectional digital wireless earphone 100 for listening to the subway video advertisement according to the present invention receives the weak radio wave transmitted from the outbox, restores the RF signal to a digital signal, and decompresses the compressed digital signal to convert it into a voice signal. This can increase the reception rate and lower the signal error.
위에서 설명한 바와같이, 본 발명에 따른 본 발명에 따른 지하철 동영상 광고 청취용 단방향 디지털 무선 이어폰은 아웃박스 송신부의 디지탈 신호를 받아 음성신호로 변환하기 때문에 수신율을 높일 수 있으며, 신호 오류를 낮출 수 있는 효과가 있다.As described above, the unidirectional digital wireless earphone for subway video advertisement listening according to the present invention according to the present invention receives digital signals of the outbox transmitter and converts them into voice signals, thereby increasing the reception rate and reducing the signal error. There is.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030019769A KR20040084589A (en) | 2003-03-29 | 2003-03-29 | One-way digital radio receiver for listening to moving picture advertizement of subway train |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020030019769A KR20040084589A (en) | 2003-03-29 | 2003-03-29 | One-way digital radio receiver for listening to moving picture advertizement of subway train |
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| KR1020030019769A KR20040084589A (en) | 2003-03-29 | 2003-03-29 | One-way digital radio receiver for listening to moving picture advertizement of subway train |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930015800A (en) * | 1991-12-21 | 1993-07-24 | 배순훈 | TV wireless voice transmission system |
| KR980013296A (en) * | 1996-07-24 | 1998-04-30 | 김광호 | Wireless listening system for Television |
| KR20000003828A (en) * | 1998-06-29 | 2000-01-25 | 전주범 | Television receiver with audible function |
| KR200211953Y1 (en) * | 2000-08-18 | 2001-02-01 | 주식회사서브미디어 | Multimedia broadcasting system for the subway |
| KR200238198Y1 (en) * | 2001-01-31 | 2001-10-26 | 문해중 | Wireless Television Sound Hearing System |
| KR20020084530A (en) * | 2001-05-02 | 2002-11-09 | 박육의 | Apparatus for transmitting and receiving voi ce in the subway |
-
2003
- 2003-03-29 KR KR1020030019769A patent/KR20040084589A/en not_active Application Discontinuation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR930015800A (en) * | 1991-12-21 | 1993-07-24 | 배순훈 | TV wireless voice transmission system |
| KR980013296A (en) * | 1996-07-24 | 1998-04-30 | 김광호 | Wireless listening system for Television |
| KR20000003828A (en) * | 1998-06-29 | 2000-01-25 | 전주범 | Television receiver with audible function |
| KR200211953Y1 (en) * | 2000-08-18 | 2001-02-01 | 주식회사서브미디어 | Multimedia broadcasting system for the subway |
| KR200238198Y1 (en) * | 2001-01-31 | 2001-10-26 | 문해중 | Wireless Television Sound Hearing System |
| KR20020084530A (en) * | 2001-05-02 | 2002-11-09 | 박육의 | Apparatus for transmitting and receiving voi ce in the subway |
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