KR960006549A - Reception Sensitivity Correction Device for In-vehicle TV - Google Patents

Reception Sensitivity Correction Device for In-vehicle TV Download PDF

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Publication number
KR960006549A
KR960006549A KR1019940018840A KR19940018840A KR960006549A KR 960006549 A KR960006549 A KR 960006549A KR 1019940018840 A KR1019940018840 A KR 1019940018840A KR 19940018840 A KR19940018840 A KR 19940018840A KR 960006549 A KR960006549 A KR 960006549A
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KR
South Korea
Prior art keywords
signal
transmission means
signal transmission
key input
tuner
Prior art date
Application number
KR1019940018840A
Other languages
Korean (ko)
Other versions
KR970006657B1 (en
Inventor
김성준
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940018840A priority Critical patent/KR970006657B1/en
Publication of KR960006549A publication Critical patent/KR960006549A/en
Application granted granted Critical
Publication of KR970006657B1 publication Critical patent/KR970006657B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/52—Automatic gain control
    • 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
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Radio Transmission System (AREA)

Abstract

본 발명은 차량의 이동으로 인해 수시로 변동되는 텔레비젼수신감도을 일정하게 유지시켜 줌으로써 보다 안정된 화면을 디스플레이 할 수 있도록 된 차량탑재용 텔레비젼의 수신감도 보정장치를 제공하기 위한 것이다.The present invention is to provide a reception sensitivity correction device for a vehicle-mounted television that can display a more stable screen by maintaining a constant TV reception sensitivity that is often changed due to the movement of the vehicle.

이를 위해 본 발명은, 키입력부(18)로부터의 선국키입력신호에 따라 튜너(16)가 해당 채널을 선국하도록 제어함과 더불어 상기 키입력부(18)로부터의 제어키입력신호에 따라 장치의 해당 제어동작을 실행하는 마이컴(10)을 구비한 차량탑재용 텔레비젼에 있어서; 안테나와 튜너(16)사이에 이득이 서로 다른 다수의 텔레비젼신호전송수단(12A,12B,12C)을 병렬로 설치하고, 상기 다수의 신호전송수단(12A,12B,12C)과 상기 튜너(16)사이에 각각의 신호전송을 단속하기 위한 다수의 스위칭수단(SW1,SW2,SW3)을 설치하며, 상기 신호전송수단(12A,12B,12C)각각의 신호출력세기를 검출하기 위한 다수의 신호제기검출부(14A,14B,14C)로부터의 각 신호세기를 입력받아 상기 다수의 스위칭수단(SW1,SW2,SW3)중 기설정된 기준신호세기에 가장 근접하는 신호세기가 입력되는 신호전송수단(12A 또는12B 또는12C)에 접속된 스위칭수단(SW1 또는SW2 또는SW3)에만 스위칭은 제어신호를 출력하는 것을 특징으로 한다.To this end, the present invention controls the tuner 16 to tune the corresponding channel according to the tuning key input signal from the key input unit 18, and the corresponding device of the device according to the control key input signal from the key input unit 18. A vehicle-mounted television having a microcomputer 10 for executing a control operation; A plurality of television signal transmission means 12A, 12B, 12C having different gains are installed in parallel between the antenna and the tuner 16, and the plurality of signal transmission means 12A, 12B, 12C and the tuner 16 are arranged in parallel. A plurality of switching means (SW1, SW2, SW3) for intermittent each signal transmission between the plurality of signal transmission means for detecting the signal output strength of each of the signal transmission means (12A, 12B, 12C) Signal transmission means 12A or 12B which receives the respective signal strengths from 14A, 14B and 14C and inputs the signal strength closest to a preset reference signal strength among the plurality of switching means SW1, SW2 and SW3. Switching only to the switching means SW1 or SW2 or SW3 connected to 12C) is characterized by outputting a control signal.

Description

차량탑재용 텔레비전의 수신감도 보정장치Reception Sensitivity Correction Device for In-vehicle TV

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명에 따른 차량탑재용 텔레비전의 수신감도 보정장치를 나타낸 블럭구성도이다.1 is a block diagram showing a reception sensitivity correction apparatus for a vehicle-mounted television according to the present invention.

Claims (3)

키입력부(18)로부터 선국키입력신호에 따라 튜너(16)가 해당 채널을 선국하도록 제어함과 더불어 상기 키입력부(18)로부터의 제어키입력신호에 따라 장치의 해당 제어동작을 실행하는 마이컴(10)을 구비한 차량탑재용 텔레비전에 있어서, 안테나와 상기 튜너(16)사이에 이득이 서로 다른 다수의 신호전송수단(12A,12B,12C)을 병렬로 설치하고, 상기 다수의 신호전송수단(12A,12B,12C)과 상기 튜너(16) 사이에 각각 신호전송을 위한 기 위한 다수의 스위칭수단(SW1,SW2,SW3)을 설치하며, 상기 신호전송수단(12A,12B,12C) 각각의 신호출력세기를 검출하기 위한 다수의 신호세기검출부(14A,14B,14C)를 설치하고, 상기 마이컴(10)은 상기 다수의 신호세기검출부(14A,14B,14C)로부터의 각 신호세기를 입력받아 상기 다수의 스위칭수단(SW1,SW2,SW3)중 기설정된 기준신호세기에 가장 근접하는 신호세기가 입력되는 신호전송수단(12A 또는 12B또는 12C)에 접속된 스위칭수단(SW1 또는 SW2 또는 SW3)에만 스위칭은 제어신호를 출력하는 것을 특징으로 하는 차량탑재용 텔레비전의 수신감도 보정장치.The microcomputer controls the tuner 16 to tune the corresponding channel according to the tuning key input signal from the key input unit 18 and performs a corresponding control operation of the device according to the control key input signal from the key input unit 18 ( 10. A vehicle-mounted television comprising 10, a plurality of signal transmission means 12A, 12B, 12C having different gains in parallel between an antenna and the tuner 16, and the plurality of signal transmission means ( A plurality of switching means (SW1, SW2, SW3) for signal transmission are installed between 12A, 12B, 12C and the tuner 16, respectively, and each signal of the signal transmission means 12A, 12B, 12C. A plurality of signal strength detectors 14A, 14B, and 14C are provided for detecting output strength, and the microcomputer 10 receives each signal strength from the plurality of signal strength detectors 14A, 14B, and 14C. Among the plurality of switching means (SW1, SW2, SW3) closest to the preset reference signal strength And a switching means (SW1 or SW2 or SW3) connected only to the signal transmission means (12A or 12B or 12C) to which the signal strength is inputted to output a control signal. 제1항에 있어서, 상기 다수의 신호전송수단(12A,12B,12C)은 이득이 45dB인 감쇄용 케이블로 이루어진 제1신호전송수단(12A)과, 이득이 60dB인 표준케이블로 이루어진 제2신호전송수단(12B) 및 이득이 75dB인 증폭용 5케이블로 이루어진 제3신호전송수단(12C)으로 이루어진 것을 특징으로 하는 차량탑재용 텔레비전의 수신감도 보정장치.The signal transmission means according to claim 1, wherein the plurality of signal transmission means (12A, 12B, 12C) comprises a first signal transmission means (12A) made of attenuation cable having a gain of 45 dB and a second signal made of a standard cable having a gain of 60 dB. And a third signal transmission means (12C) comprising a transmission means (12B) and five cables for amplification having a gain of 75 dB. 제1항에 있어서, 상기 신호세기검출부(14A,14B,14C)는 상기 신호전송수단(12A,12B,12C)을 통과한 신호를 직류전압으로 변환하여 직류전압레벨을 검출하고, 상기 마이컴(10)의 상기 기준신호세기는 소정의 기준전압레벨인 것을 특징으로 하는 차량탑재용 텔레비전의 수신감도 보정장치.The signal strength detecting unit (14A, 14B, 14C) converts a signal passing through the signal transmission means (12A, 12B, 12C) into a DC voltage to detect a DC voltage level, and the microcomputer (10). And the reference signal strength is a predetermined reference voltage level. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940018840A 1994-07-30 1994-07-30 Apparatus for compensating the degree of the received signal of tv for a car KR970006657B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940018840A KR970006657B1 (en) 1994-07-30 1994-07-30 Apparatus for compensating the degree of the received signal of tv for a car

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Application Number Priority Date Filing Date Title
KR1019940018840A KR970006657B1 (en) 1994-07-30 1994-07-30 Apparatus for compensating the degree of the received signal of tv for a car

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KR960006549A true KR960006549A (en) 1996-02-23
KR970006657B1 KR970006657B1 (en) 1997-04-29

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KR1019940018840A KR970006657B1 (en) 1994-07-30 1994-07-30 Apparatus for compensating the degree of the received signal of tv for a car

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170057341A (en) * 2014-09-16 2017-05-24 이스트만 케미칼 컴파니 Polymeric compositions with improved noise suppression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170057341A (en) * 2014-09-16 2017-05-24 이스트만 케미칼 컴파니 Polymeric compositions with improved noise suppression

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Publication number Publication date
KR970006657B1 (en) 1997-04-29

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