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KR950035361A - Booster signal selection control method and circuit in television receiver - Google Patents

Booster signal selection control method and circuit in television receiver Download PDF

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Publication number
KR950035361A
KR950035361A KR1019950008288A KR19950008288A KR950035361A KR 950035361 A KR950035361 A KR 950035361A KR 1019950008288 A KR1019950008288 A KR 1019950008288A KR 19950008288 A KR19950008288 A KR 19950008288A KR 950035361 A KR950035361 A KR 950035361A
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KR
South Korea
Prior art keywords
booster
channel
signal
tuner
input
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KR1019950008288A
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Korean (ko)
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KR0141738B1 (en
Inventor
백운길
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구자홍
엘지전자 주식회사
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Publication of KR950035361A publication Critical patent/KR950035361A/en
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Publication of KR0141738B1 publication Critical patent/KR0141738B1/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
    • H04N5/50—Tuning indicators; Automatic tuning control
    • 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
    • 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
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)

Abstract

본 발명은 텔레비젼 수상기의 부스터신호의 선택을 제어하는 기술에 관한 것으로 부스터 온/오프키이를 근거로 하여 부스터(1) 사용이 설정되는 채널을 기억한 후 채널선택키이를 눌러 자기가 원하는 채널을 선택할때, 상기의 채널 기억과정에서 설정된 채널에 대해 선택적으로 부스터(1)의 출력신호를 선택하여 투너(3)로 공급하고, 이후 현재 선국된 채널의 전계강도를 자체적으로 측정하여 기준치이하일때 메모리(7)에 기록된 부스터 온, 오프정보를 정정하여 기록함으로써 환경변화에 관계없이 최적의 전계강도를 유지할 수 있게 된다.The present invention relates to a technique for controlling the selection of a booster signal of a television receiver. After storing a channel to which the booster 1 is set based on the booster on / off key, the channel is selected by pressing a channel selection key. In this case, the output signal of the booster 1 is selectively selected with respect to the channel set in the channel storing process and supplied to the tuner 3, and then the electric field strength of the currently tuned channel is measured by itself and is less than the reference value. By correcting and recording the booster on and off information recorded in 7), it is possible to maintain the optimum electric field strength regardless of the environmental change.

Description

텔레비젼수상기의 부스터신호 선택 제어 방법 및 회로Booster signal selection control method and circuit in television receiver

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 텔레비젼수상기의 부스터신호 선택제어 블록도, 제2도는 부스터 스위칭용 데이타의 메모리 포맷도, 제3도는 본 발명의 부스터신호 선택 제어 방법에 대한 일실시 예시 신호 흐름도.1 is a block diagram of a booster signal selection control of a television receiver of the present invention, FIG. 2 is a memory format diagram of booster switching data, and FIG. 3 is a signal flow diagram of an exemplary booster signal selection control method of the present invention.

Claims (5)

부스터 온/오프키이가 입력될때 현재의 채널번호로 메모리의 어드레스와 비트값을 연산하고, 그 비트값을 연산된 어드레스에 반전기록하는 부스터 온/오프정보 기록과정과, 채널변경키이가 입력될때 변경될 채널의 번호로부터 해당 어드레스를 연산하여 상기 부스터 온/오프정보 기록과정에서 기록된 부스터 온/오프정보를 읽고, 그 읽어낸 온/오프정보에 따라 스위치를 제어하여 부스터의 출력신호 또는 안테나의 출력신호를 튜너로 공급하는 튜너입력 선택과정으로 이루어지는 것을 특징으로 하는 텔레비젼 수상기의 부스터신호 선택제어 방법.When the booster on / off key is input, the memory address and bit value are calculated using the current channel number, and the booster on / off information recording process of inverting and writing the bit value to the calculated address is changed when the channel change key is input. Reads the booster on / off information recorded in the booster on / off information recording process by calculating the corresponding address from the number of the channel to be used, and controls the switch according to the read on / off information to output the output signal of the booster or the antenna A booster signal selection control method for a television receiver comprising a tuner input selection process for supplying a signal to a tuner. 제1항에 있어서, 부스터 온/오프정보 기록과정은 부스터 온/오프키이의 입력에 의해 설정되는 비트값에 따라 스위치를 제어하여 부스터의 출력신호 또는 안테나의 출력신호를 튜너로 공급하는 스텝을 포함하는 것을 특징으로 하는 텔레비젼수상기의 부스터신호 선택 제어 방법.The method of claim 1, wherein the recording of the booster on / off information includes controlling the switch according to a bit value set by an input of the booster on / off key to supply an output signal of the booster or an output signal of the antenna to the tuner. A booster signal selection control method for a television receiver, characterized in that. 안테나(ANT)를 통해 입력되는 고주파신호를 증폭하여 감도를 향상시키는 부스터(1)와, 외부의 제어를 받아 상기 안테나를 통해 입력되는 고주파신호나 부스터(1)의 출력신호를 선택하여 출력하는 스위치(2)와, 상기 스위치(2)의 출력신호를 공급받아 이로부터 음성 및 영상 중간주파수를 생성하는 튜너(3)와, 상기 튜너(3)에서 출력되는 음성중간주파수를 처리하여 원래의 음성신호를 복원하고 영상중간주파수를 처리하여 원래의 영상신호를 복원하는 중간주파수 처리부(4)와, 설정모드에서 키이매트릭스(5)를 통해 부스터 온/오프키이가 입력될때 해당 채널의 번호를 메모리(7)에 저장시키고, 평상모드에서 그 채널이 선택될때 상기 스위치(2)을 제어하여 부스터(1)의 출력신호를 선택하도록 제어하는 마이크로컴퓨터(6)와, 상기 마이크로컴퓨터(6)의 제어에 의해 선택된 채널의 영상신호를 상기 중간주파수 처리부(2)로부터 공급받아 이로부터 색신호를 추출하는 씨피티(CPT)측으로 출력하는 크로마부(5)로 구성한 것을 특징으로 하는 텔레비젼수상기의 부스터신호 선택 제어 회로.Booster 1 for amplifying the high frequency signal input through the antenna ANT to improve the sensitivity, and a switch for selecting and outputting a high frequency signal or an output signal of the booster 1 input through the antenna under external control (2), a tuner (3) which receives the output signal of the switch (2) and generates an audio and video intermediate frequency therefrom, and processes the audio intermediate frequency output from the tuner (3) to produce the original audio signal. And an intermediate frequency processor (4) for restoring the original image signal by processing the image intermediate frequency, and storing the number of the corresponding channel when the booster on / off key is input through the key matrix (5) in the setting mode. And a microcomputer (6) for controlling the switch (2) to select the output signal of the booster (1) when the channel is selected in the normal mode, and by the control of the microcomputer (6). The booster signal selection control circuit of a television receiver comprising: a chroma unit (5) for receiving a video signal of a selected channel from the intermediate frequency processing unit (2) and outputting it to a CPT side for extracting color signals therefrom. . 채널변경 키이신호가 입력되는지를 확인하여 절환할 채널데이타를 연산하는 제1과정과, 상기 채널데이타 연산결과를 근거로 메모리에서 할당 채널 데이타 영역의 부스터 온/오프 정보를 읽어와 그 정보에 따라 부스터를 온시키거나 오프시키고, 선국동작을 수행하는 제2과정과, 튜너에서 출력되는 자동이득전압(AGC)을 읽어 현재 선국된 채널의 전계강도와 기 설정된 기준전계강도를 비교하여 그 결과에 따라 상기 메모리에 기록된 부스터 온, 오프정보를 정정하는 제3과정으로 이루어지는 것을 특징으로 하는 텔레비젼수상기의 부스터신호 선택 제어 방법.A first step of calculating channel data to be switched by checking whether a channel change key signal is input; and reading booster on / off information of an allocated channel data area from a memory based on the channel data calculation result and booster according to the information Turn on or off, perform a tuning operation, and read the automatic gain voltage (AGC) output from the tuner and compare the electric field strength of the currently tuned channel with the preset reference electric field strength according to the result. And a third step of correcting the booster on and off information recorded in the memory. 제4항에 있어서, 제3과정은 현재, 부스터 온상태인지 오프상태인지를 확인하여 메모리에서 현재 선국된 채널의 밴드별 해당 기준전압을 읽어오는 제1단계와, 튜너에서 출력되는 자동이득제어전압과 상기 선국된 채널의 밴드별 해당 기준전압을 비교하여 수신전계강도가 낮다고 판단될때 메모리에 부스터 온정보를 정정하여 기록하고, 높다고 판단될때 오프정보를 정정하여 기록하는 제2단계로 이루어지는 것을 특징으로 하는 텔레비젼수상기의 부스터신호 선택 제어 방법.5. The method of claim 4, wherein the third process comprises: a first step of checking whether the booster is in an on state or an off state and reading a corresponding reference voltage for each band of a channel currently tuned in the memory; and an automatic gain control voltage output from the tuner. And a second step of correcting and recording the booster on information in the memory when it is determined that the received electric field strength is low by comparing the corresponding reference voltage for each band of the tuned channel with the corresponding reference voltage. A booster signal selection control method for a television receiver. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950008288A 1994-05-09 1995-04-10 Booster signal selection control method & circuit of tv. KR0141738B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR19940010097 1994-05-09
KR94-10097 1994-05-09

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KR950035361A true KR950035361A (en) 1995-12-30
KR0141738B1 KR0141738B1 (en) 1998-06-15

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KR1019950008288A KR0141738B1 (en) 1994-05-09 1995-04-10 Booster signal selection control method & circuit of tv.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100774171B1 (en) * 2005-11-30 2007-11-08 엘지전자 주식회사 Apparatus and method for tuner control of video equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100774171B1 (en) * 2005-11-30 2007-11-08 엘지전자 주식회사 Apparatus and method for tuner control of video equipment

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KR0141738B1 (en) 1998-06-15

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