KR20050027434A - Improvement system of television receiver for vehicle - Google Patents

Improvement system of television receiver for vehicle Download PDF

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Publication number
KR20050027434A
KR20050027434A KR1020030063706A KR20030063706A KR20050027434A KR 20050027434 A KR20050027434 A KR 20050027434A KR 1020030063706 A KR1020030063706 A KR 1020030063706A KR 20030063706 A KR20030063706 A KR 20030063706A KR 20050027434 A KR20050027434 A KR 20050027434A
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South Korea
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signal
amplifier
vehicle
field strength
electric field
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KR1020030063706A
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Korean (ko)
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조형준
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현대모비스 주식회사
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Priority to KR1020030063706A priority Critical patent/KR20050027434A/en
Publication of KR20050027434A publication Critical patent/KR20050027434A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H04H20/62—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast for transportation systems, e.g. in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41422—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance located in transportation means, e.g. personal vehicle
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Abstract

A system for improving the reception of a TV signal in a vehicle is provided to prevent that a TV picture is distorted by preventing that a signal output level is changed according as electric field strength is changed per moving area. An antenna(100) receives an RF(Radio Frequency) signal. An RF amplifier(200) amplifies the RF signal. A TV tuner(300) tunes the RF signal amplified in the RF amplifier. A microcomputer(600) turns on/off the RF amplifier according to electric field strength. A monitor(400) converts the signal tuned in the TV tuner into an image signal, and displays the converted image signal. The TV tuner has an S meter circuit for measuring the electric field strength.

Description

차량의 텔레비젼수신 개선시스템 {Improvement system of television receiver for vehicle}Improvement system of television receiver {Improvement system of television receiver for vehicle}

본 발명은 RF엠프 제어에 따른 차량의 텔레비젼 수신제어 시스템에 관한 것으로서, 특히 차량에서 유리안테나로 수신되는 RF신호가 일정한 세기로 모니터에 전달되도록 하여 양질의 화면과 음향으로 시청할 수 있도록 하는 차량의 텔레비젼수신제어 시스템에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television reception control system of a vehicle according to RF amplifier control. In particular, the television signal of a vehicle for transmitting RF signals received from a glass antenna to a monitor with a constant intensity can be watched with high quality screen and sound. A reception control system.

장시간 출퇴근과 주 5일 근무제의 증가로 인한 주말레저 활동으로 차 안에서 보내는 시간이 늘어남에 따라 차량내 AV시스템을 활용하는 시간이 늘어나고 있으며, 시장의 확대에 따른 카비디오나 오디오 수요는 상당량에 이르고 있다. 또한, 자동차의 특성상 운행중 차량의 흔들림이나 운행지역의 악천후등 기상여건에도 좋은 화질을 수신할 수 있는 성능이 뛰어나고 소형화된 자동차 디스플레이어 기기를 필요로 하고 있다. 이에 화질이나 음질을 개선시키기 위한 기술적 노력이 계속되고 있다.  As time spent in the car increases due to weekend leisure activities due to long commute and five-day workweek increase, the use of in-vehicle AV system is increasing, and the demand for car video and audio is increasing due to the market expansion. . In addition, due to the characteristics of the vehicle, there is a need for a high-performance and miniaturized automobile display device capable of receiving good image quality even in weather conditions such as vehicle shaking or bad weather conditions. Accordingly, technical efforts to improve image quality and sound quality continue.

예를 들면, FM 텔레비젼 튜너는 안테나에서 수신된 RF신호를 동조하여 일정한 크기의 영상 및 음향신호로 변환해주는 장치로서 이를 사용하여 고화질 텔레비젼은 물론 FM 라디오를 청취하실 수도 있다.  For example, an FM television tuner is a device that tunes an RF signal received from an antenna and converts it into a video and audio signal of a predetermined size, and can use it to listen to FM radio as well as high definition television.

또한 이에 스테레오 칩(Stereo chip)을 사용하여 텔레비젼과 FM 라디오를 Hi-Fi Stereo로 청취할 수 있고, 완벽한 호환 기능으로 여러 멀티미디어 프로그램(Adobe Premiere, Net Meeting 등)에 쓰일 수 있으며, 멀티채널과 멀티 스크린, 슬라이드를 지원하여 여러 채널을 동시 시청 또는 한 채널을 분할하여 시청할 수도 있다. 그리고 이에 비디오, 비디오 카메라, 게임기등 외부영상을 입력받아 활용할 수도 있으며, 정지화상. 동화상을 저장할 수 있어 여러 응용분야에 용이하게 쓰일 수 있다. It also uses a stereo chip to listen to TV and FM radio in Hi-Fi Stereo, and is fully compatible with many multimedia programs (Adobe Premiere, Net Meeting, etc.) It supports screens and slides, so you can watch multiple channels simultaneously or split one channel. And it can also take advantage of external video such as video, video cameras, game consoles, and still images. It can save video and can be easily used in many applications.

도 1은 종래기술에 따른 차량의 텔레비젼 수신제어 시스템에 관한 블록도로서, 시스템의 동작을 도 1을 참고하여 설명하면, 먼저 유리안테나(10)는 외부에서 RF신호를 수신하고 상기 수신된 RF신호는 RF엠프(20)에서 증폭된다. 상기 RF엠프(20)에서 증폭된 RF신호는 텔레비젼 튜너(30)에서 동조되고 상기 텔레비젼 튜너(30)에서 동조된 신호는 모니터(40)에서 영상신호로 바뀌어 텔레비젼을 시청할 수 있게 된다. 1 is a block diagram of a television reception control system for a vehicle according to the prior art. Referring to FIG. 1, the operation of the system will be described. First, the glass antenna 10 receives an RF signal from the outside and receives the received RF signal. Is amplified by the RF amplifier 20. The RF signal amplified by the RF amplifier 20 is tuned in the television tuner 30 and the signal tuned in the television tuner 30 is converted into an image signal in the monitor 40 so that the television can be watched.

그러나, 종래 차량의 텔레비젼 수신제어 시스템은 전계강도의 세기에 따라 화면이 고르지 못한 단점이 있었다. 즉, 상기 차량 주행시에는 진동이 많고, 차량의 주행 방향이 운전자의 판단에 따라 임의적으로 바뀌므로 상기 텔레비젼 등에서 신호의 수신 강도가 변화하기 때문에 차량이 주변에 방해물이 없는 경우 수신 상태가 양호한 반면, 주변에 방해물이 많은 경우에는 수신 상태가 나빠지게 되어 이로 인해 노이즈에 의한 간섭 현상이 심화되어 수신이 중단되는 등의 사태가 발생하게 된다However, the conventional television reception control system of the vehicle has a disadvantage that the screen is uneven according to the strength of the electric field strength. That is, since the vibration of the vehicle is large and the driving direction of the vehicle is arbitrarily changed at the driver's discretion, the reception intensity of the signal is changed on the television, so that the reception state is good when the vehicle is free of obstacles. If there are a lot of obstacles in the receiver, the reception is worsened, which causes the interference caused by the noise to be worsened and the reception is interrupted.

따라서 이동하는 자동차의 특성상, 이동지역에 따른 전계강도 세기 차이가 빈번히 발생하는데 전계강도가 너무 강하거나 약한 지역에서는 상기 RF엠프(20)에서 신호증폭시 일정한 신호출력을 발생시킬 수 없으므로 화면이 고르지 못하고 일그러지는 현상이 자주 발생하는 문제점이 있다.Therefore, due to the characteristics of the moving vehicle, the difference in the field strength strength occurs frequently according to the moving region, but the screen is uneven because the RF amplifier 20 cannot generate a constant signal output when the signal is amplified in the field strength is too strong or weak. There is a problem that distortion occurs frequently.

본 발명은 상기한 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 그 목적은 자동차의 특성상 이동지역마다 전계강도가 변함에 따라 신호출력이 달라지는 것을 막아 텔레비젼 화면이 일그러지는 것을 방지함과 동시에, 좋은 화질과 음질을 제공하는데 있다.The present invention has been made to solve the above-mentioned problems of the prior art, the object of which is to prevent the distortion of the TV screen by changing the signal output as the electric field intensity changes for each moving area due to the characteristics of the vehicle, and at the same time good To provide picture quality and sound quality.

상기 목적을 달성하기 위한 본 발명은 RF엠프에서 신호가 증폭되기 전에 미리 텔레비젼 튜너의 S미터단자에서 자동차가 이동하는 이동지역의 전계강도가 반영된 RF신호를 미리 측정한다. 그 측정치에 따라 U-COM부에서는 RF엠프를 ON/OFF시키는 지시를 내려서 일종의 피드백 효과에 따른 일정한 RF엠프의 출력을 유지하게 됨으로써 전계강도의 변동으로 인한 화면의 일그러짐을 막아 텔레비젼의 화질과 음질을 향상시킬 수 있도록 한다. In order to achieve the above object, the present invention measures in advance the RF signal reflecting the electric field strength of the moving area in which the vehicle moves in the S meter terminal of the TV tuner before the signal is amplified in the RF amplifier. According to the measured value, the U-COM unit instructs to turn on / off the RF amplifier to maintain a constant RF amplifier output according to a kind of feedback effect, thereby preventing the distortion of the screen caused by the fluctuation of the electric field intensity, thereby improving the TV image quality and sound quality. To improve.

상기 과제를 해결하기 위한 본 발명에 의한 텔레비젼 수신 제어시스템은 외부에서 RF신호를 수신하는 유리안테나와, 상기 RF신호를 증폭시키는 RF엠프와, 상기 RF엠프에서 증폭된 RF신호를 동조하는 텔레비젼 튜너와, 전계강도 세기에 따라 상기 RF엠프를 ON/OFF시켜서 일정한 출력을 지시하는 U-COM부와, 상기 텔레비젼 튜너에서 동조된 신호를 영상신호로 바꾸는 모니터를 포함하여 구성된다. The television reception control system according to the present invention for solving the above problems is a glass antenna for receiving an RF signal from the outside, an RF amplifier for amplifying the RF signal, a television tuner for tuning the RF signal amplified by the RF amplifier; And a U-COM unit for instructing a constant output by turning on / off the RF amplifier according to the electric field strength, and a monitor for converting the signal tuned by the television tuner into a video signal.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 따른 차량의 텔레비젼 수신 제어시스템은 도 2 에 도시된 바와 같이, 외부에서 RF신호를 수신하는 유리안테나(100)와, 상기 RF신호를 증폭시키는 RF엠프(200)와 상기 RF엠프(200)에서 증폭된 RF신호를 동조하는 텔레비젼 튜너(300)와 전계강도 세기에 따라 상기 RF엠프(200)를 ON/OFF시켜서 일정한 출력을 지시하는 U-COM부(600)와 상기 텔레비젼 튜너(300)에서 동조된 신호를 영상신호로 바꾸는 모니터(400)를 포함하여 구성된다. As shown in FIG. 2, a television reception control system for a vehicle according to the present invention includes a glass antenna 100 for receiving an RF signal from an outside, an RF amplifier 200 for amplifying the RF signal, and the RF amplifier 200. U-COM unit 600 and the TV tuner 300 for instructing a constant output by turning on / off the RF amplifier 200 according to the electric field strength strength and the TV tuner 300 to tune the amplified RF signal It is configured to include a monitor 400 for converting a signal tuned in to a video signal.

여기서, 상기 U-COM부(600)는 각종 I/O 들이 내장된 원칩 마이크로콘트롤러로서 별도의 종래 시스템에 대한 큰 변형이 없이 작은 부피와 간단한 구성으로 일정한 신호출력을 피드백 제어하는 역활을 한다.Here, the U-COM unit 600 is a one-chip microcontroller in which various I / Os are embedded, and serves to feedback-control a constant signal output with a small volume and a simple configuration without large modifications to a separate conventional system.

또한, 상기 텔레비젼 튜너(300)에 내장된 S미터(500)에서는 차량이 운행하는 지역에서의 전계강도 세기가 반영된 RF엠프(200)에서의 RF신호 증폭출력 세기를 측정한다. In addition, the S-meter 500 embedded in the TV tuner 300 measures the RF signal amplification output strength of the RF amplifier 200 reflecting the electric field strength in the region in which the vehicle operates.

상기 측정된 RF신호출력은 상기 U-COM부(500)에서 고른 화면을 나타내는 일정량의 기준 출력세기와 비교되고 그 비교값에 따라서 상기 U-COM부(500)에서는 일정한 세기의 RF신호 출력이 발생, 유지될 수 있도록 상기 RF엠프(200)를 ON/OFF시킨다.The measured RF signal output is compared with a predetermined amount of reference output intensity indicating a screen evenly selected by the U-COM unit 500, and the RF signal output of a constant intensity is generated in the U-COM unit 500 according to the comparison value. To turn on and off, the RF amplifier 200 can be maintained.

결국, 상기 U-COM부(500)는 일정한 RF출력을 발생시켜서 종래발명에서 문제되었던 RF엠프(200)에서의 신호출력이 일정치 못함으로 발생되었던 텔레비젼 화면의 일그러짐을 막아 차량운행 중에도 항상 깨끗한 화면을 시청할 수 있도록 하는 것을 목적으로 한다.  As a result, the U-COM unit 500 generates a constant RF output to prevent distortion of the TV screen generated by a non-uniform signal output from the RF amplifier 200, which has been a problem in the prior art, so that the screen is always clean even while the vehicle is running. It aims to be able to watch.

이하, 본 발명의 첨부된 도면을 참조하여 구체적인 동작을 살펴보면 다음과 같다.Hereinafter, a detailed operation will be described with reference to the accompanying drawings of the present invention.

도 2는 본 발명에 의한 차량의 텔레비젼 수신개선 시스템을 도시한 블록도로서, 먼저 외부에서 차량의 유리에 부착된 유리안테나(100)를 통해 수신된 RF신호는 RF엠프(200)에서 상기 유리안테나(100)에서 수신된 RF신호를 모니터(400)에서 원하는 화질과 음질로 표현하기 위한 적당한 크기로 증폭된다.FIG. 2 is a block diagram illustrating a system for improving a TV reception of a vehicle according to the present invention. First, an RF signal received through a glass antenna 100 attached to a glass of a vehicle from the outside is received from the RF amplifier 200 by the glass antenna. The RF signal received at 100 is amplified to an appropriate size to express desired quality and sound quality in the monitor 400.

상기 증폭된 RF신호는 상기 텔레비젼 튜너(300)에서 불필요한 잡음신호를 제거하고 희망대역의 고주파신호를 선택하는 지 여부 즉, 동조여부를 상기 텔레비젼 튜너(300)에 내장된 S미터(500)에서 측정한다.The amplified RF signal removes unnecessary noise signals from the television tuner 300 and selects a high frequency signal of a desired band, that is, whether the tuning is performed by the S-meter 500 embedded in the television tuner 300. do.

즉, 상기 S미터(500)는 차량이 이동하는 지역에서의 전계강도가 반영된 RF엠프(200)에서의 증폭된 RF신호세기가 측정한다. That is, the S-meter 500 measures the amplified RF signal strength of the RF amplifier 200 reflecting the electric field strength in the region in which the vehicle moves.

상기 S미터(500)는 수신기가 정확하게 희망 신호에 동조하고 있는지의 여부를 나타내는 동조지시 회로로서 상기 S미터(500)에서의 외부 전계강도가 반영된 측정값은 U-COM부(600)로 입력된다. The S-meter 500 is a tuning instruction circuit indicating whether the receiver is accurately tuning to a desired signal. The measured value reflecting the external electric field strength of the S-meter 500 is input to the U-COM unit 600. .

외부에서의 상기 전계강도가 강하면 상기 RF엠프(200)에서 증폭된 신호도 같이 증폭되어 화면이 일그러지는 현상이 발생되므로, U-COM부(600)에서 상기 RF엠프(200)를 OFF시키는 명령을 내려서 출력을 낮추고, 상기 전계강도가 약하면 마찬가지로 화면이 고르지 못한 현상이 나타나므로 상기 U-COM부(600)에서 상기 RF엠프(200)를 ON시켜서 출력을 높이는 명령을 내린다.When the electric field strength from the outside is strong, the signal amplified by the RF amplifier 200 is also amplified and the screen is distorted. Thus, a command to turn off the RF amplifier 200 from the U-COM unit 600 is issued. Lower the output, and if the electric field strength is weak, the screen is uneven, so the U-COM unit 600 turns on the RF amplifier 200 to give a command to increase the output.

결국, 상기 S미터(500)와 상기 U-COM부(600)에서는 일정한 크기의 RF신호출력이 발생되도록 상기 RF엠프(200)를 ON/OFF시키면서 일정한 신호를 상기 모니터(400)로 보내는 피드백제어의 역할을 한다. 그럼으로써 일정한 크기의 RF출력으로 화면의 일그러짐이 없는 깨끗한 화면을 만들수 있다.As a result, the S-meter 500 and the U-COM unit 600 controls the feedback to send a constant signal to the monitor 400 while turning on / off the RF amplifier 200 to generate a constant-size RF signal output. Plays a role. This allows you to create a clear screen without distortion of the screen with a constant RF output.

이상과 같이 본 발명에 의한 차량의 텔레비전 수신 개선 시스템을 예시된 도면을 참조로 설명하였으나, 본 명세서에 개시된 실시예와 도면에 의해 본 발명은 한정되지 않으며 그 발명의 기술사상 범위내에서 당업자에 의해 다양한 변형이 이루어질 수 있음은 물론이다. As described above, the system for improving television reception of a vehicle according to the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed herein, and is defined by those skilled in the art within the technical scope of the present invention. Of course, various modifications may be made.

상기와 같이 구성되는 본 발명에 의한 차량의 텔레비젼 수신 개선시스템은 이동하는 차량의 특성상 이동지역에 따라 변하는 전계강도가 반영된 RF신호를 S미터로 측정하고 그 측정치에 따라 U-COM부에서 RF엠프를 ON/OFF시켜서 일정한 RF신호출력이 발생되도록 피드백 제어함으로써 일정한 신호가 모니터에 전달되어 이동중인 차량에서 양질의 화면과 음향의 텔레비젼을 시청할 수 있도록 하는 효과가 있다.The television reception improvement system of a vehicle according to the present invention configured as described above measures an RF signal reflecting an electric field intensity varying according to a moving region with an S meter and transmits an RF amplifier at a U-COM unit according to the measured value. By controlling the feedback so that a constant RF signal output is generated by turning on / off, a constant signal is transmitted to the monitor, so that a user can watch a high-quality screen and sound television in a moving vehicle.

도 1은 종래기술에 따른 텔레비젼 수신제어 시스템을 도시한 블록도,1 is a block diagram showing a television reception control system according to the prior art;

도 2는 본 발명에 따른 텔레비젼 수신제어 시스템을 도시한 블록도.2 is a block diagram showing a television reception control system according to the present invention;

<도면의 주요 부분에 관한 부호의 설명><Explanation of symbols on main parts of the drawings>

100 : 유리안테나 200 : RF엠프100: glass antenna 200: RF amplifier

300 : 텔레비젼튜너 400 : 모니터300: TV tuner 400: Monitor

500 : S 미터 600 : U- COM부500: S meter 600: U-COM part

Claims (3)

RF신호를 수신하는 유리안테나와; 상기 RF신호를 증폭시키는 RF엠프와; 상기 RF엠프에서 증폭된 RF신호를 동조하는 텔레비젼 튜너와; 전계강도에 따라 상기 RF엠프를 ON/OFF시키는 U-COM부와; 상기 텔레비젼 튜너에서 동조된 신호를 영상신호로 바꾸는 모니터로 구성된 것을 특징으로 하는 차량의 텔레비젼수신 개선시스템.A glass antenna for receiving an RF signal; An RF amplifier for amplifying the RF signal; A television tuner for tuning the RF signal amplified by the RF amplifier; A U-COM unit for turning on / off the RF amplifier according to electric field strength; And a monitor for converting the signal tuned by said television tuner into a video signal. 제 1 항에 있어서,The method of claim 1, 상기 텔레비젼 튜너는 상기 전계강도를 측정할 수 있는 S미터 회로를 포함하는 것을 특징으로 하는 차량의 텔레비젼수신 개선시스템.And the television tuner includes an S-meter circuit capable of measuring the field strength. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 U-COM은 상기 S미터 회로에 의해 측정된 전계강도가 반영된 RF신호에 따라 상기 RF엠프의 ON/OFF를 판단하는 것을 특징으로 하는 차량의 텔레비젼수신 개선시스템.And the U-COM determines the ON / OFF of the RF amplifier according to the RF signal reflecting the electric field strength measured by the S-meter circuit.
KR1020030063706A 2003-09-15 2003-09-15 Improvement system of television receiver for vehicle KR20050027434A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100709038B1 (en) * 2005-04-01 2007-04-20 정치섭 In-line type variable optical coupler using symmetrically etched fiber
CN105208445A (en) * 2015-09-30 2015-12-30 广西大学 Television tuner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100709038B1 (en) * 2005-04-01 2007-04-20 정치섭 In-line type variable optical coupler using symmetrically etched fiber
CN105208445A (en) * 2015-09-30 2015-12-30 广西大学 Television tuner

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