KR950020635A - VTI with LCD Floodlight - Google Patents

VTI with LCD Floodlight Download PDF

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Publication number
KR950020635A
KR950020635A KR1019940025453A KR19940025453A KR950020635A KR 950020635 A KR950020635 A KR 950020635A KR 1019940025453 A KR1019940025453 A KR 1019940025453A KR 19940025453 A KR19940025453 A KR 19940025453A KR 950020635 A KR950020635 A KR 950020635A
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KR
South Korea
Prior art keywords
vtr
liquid crystal
video signal
lamp
signal
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KR1019940025453A
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Korean (ko)
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KR0152778B1 (en
Inventor
스미오 다나까
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이헌조
엘지전자 주식회사
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Publication of KR950020635A publication Critical patent/KR950020635A/en
Application granted granted Critical
Publication of KR0152778B1 publication Critical patent/KR0152778B1/en

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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/02—Analogue recording or reproducing
    • G11B20/04—Direct recording or reproducing

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Television Signal Processing For Recording (AREA)
  • Liquid Crystal (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

본 발명은 액정투광기 내장 VTR에 관한 것으로, 투광용 램프의 점등/소등을 제어함으로써, 램프의 수명을 최대한으로 연장시키게 하는 것을 목적으로 하고 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VTR incorporating a liquid crystal projector, and aims to extend the life of the lamp to the maximum by controlling the lighting / lighting off of the floodlight lamp.

액정투광기 내장 VTR에 있어서, 그 VTR영상신호처리계(7)에서의 출력을 받아, 그 출력중의 영상신호의 유무를 검출하는 영상신호 검출수단(40)과 상기 투광을 램프와 전류기 사이에 접속되어 그 투광용 램프를 점등/소등시키는 절환수단(41)을 구비하고, 상기 영상신호 검출수단으로 영상신호가 검출되었을 때 발생하는 제어신호 S에 의하여, 또는 액정패널 구동회로계(8)에서의 검출신호에 의하여, 상기 절환수단을 온시켜서, 상기 투광용 램프를 점등시키도록 구성되어 있다.In the VTR with built-in liquid crystal projector, the video signal detecting means 40 which receives the output from the VTR video signal processing system 7 and detects the presence or absence of the video signal in the output and between the lamp and the current generator A switching means 41 connected to turn on / off the floodlight lamp, and by a control signal S generated when a video signal is detected by the video signal detecting means, or in the liquid crystal panel drive circuit system 8; The switching means is turned on to light the floodlight lamp by the detection signal of.

Description

액정투광기 내장 브이티알VTI with LCD Floodlight

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

제1도는 본 발명의 일실시예인 요부 블럭도.1 is a main block diagram of an embodiment of the present invention.

제2도는 본 발명의 다른 실시예인 블럭도.2 is a block diagram that is another embodiment of the present invention.

제3도는 본 발명의 컬러킬러 검출단자(A) 및 그의 증폭회로(B)3 shows the color killer detection terminal A and its amplification circuit B of the present invention.

Claims (4)

비디오 테이프(T)를 재생하는 헤드(20)와, 그 헤드의 재생 출력을 받아 처리하는 VTR영상 신호처리계(7)와, 그 VTR영상 신호처리계에서의 휘도 신호 및 색신호를 처리하여 액정패널을 구동하는 액정패널 구동회로계(8)와, 재생화상을 스크린에 투사하는 투광용 램프(43)와, 교류전원을 직류로 변환하여 상기 VTR 영상신호처리계와 액정패널 구동회로계와 투광용 램프에 공급하는 전류기(42)를 구비한 액정투광기 내장 VTR에 있어서, 상기 VTR영상신호처리계(7)에서의 출력을 받아, 그 출력중의 영상신호와 유무를 검출하는 영상신호 검출수단(40)과, 상기 투광용 램프와 전류기 사이에 접속되어, 상기 투광용 램프를 점등/소등시키는 절환수단(41)을 구비하고, 상기 영상신호 검출수단으로 영상신호가 검출되었을 때에 발생하는 제어신호(S)에 의하여 상기 절환수단을 온시켜서, 상기 투과용 램프와 전류기 사이에 접속되어, 상기 투광용 램프를 점등시키도록 한 것을 특징으로 하는 액정투광기를 내장한 VTRA head 20 for reproducing the video tape T, a VTR video signal processing system 7 for receiving and processing the reproduction output of the head, and a luminance signal and a color signal in the VTR video signal processing system for processing the liquid crystal panel; A liquid crystal panel drive circuit system 8 for driving a light source, a flood lamp 43 for projecting a reproduced image on a screen, and an AC power source converted into direct current to convert the VTR image signal processing system, a liquid crystal panel drive circuit system, A video signal detecting means for receiving an output from the VTR video signal processing system (7) and detecting the presence or absence of a video signal in the output thereof in a VTR having a liquid crystal projector provided with an electric current (42) supplied to a lamp ( 40) and a switching means 41 connected between the flood lamp and a current generator to turn on / off the flood lamp, and a control signal generated when a video signal is detected by the video signal detection means. (S) by the switching means A VTR having a liquid crystal light emitting device incorporated therein so as to be connected to the transmitting lamp and an electric current to turn on the light emitting lamp. 비디오 테이프(T)를 재생하는 헤드(20)와, 그 헤드의 재생 출력을 받아 처리하는 VTR영상 신호처리계(7)와, 그 VTR영상 신호처리계에서의 휘도 신호 및 색신호를 처리하여 액정패널을 구동하는 액정패널 구동회로계(8)와, 재생화상을 스크린에 투사하는 투광용 램프(43)와, 교류전원을 직류로 변환하여 상기 VTR 영상신호처리계와 액정패널 구동회로계와 투광용 램프에 공급하는 전류기(42)를 구비한 투광기 내장 VTR에 있어서, 상기 투광용 램프를 점등/소등시키는 절환수단(41)과, 상기 액정패널 구동회로계에서의 검출신호(K)를 증폭하는 증폭기(45)를 구비하고, 상기 검출신호를 증폭한 제어신호(K´)에 의하여, 상기 절환수단을 온시키고, 상기 투광용 램프를 점등시키도록 한 것을 특징으로 하는 액정투광기를 내장한 VTRA head 20 for reproducing the video tape T, a VTR video signal processing system 7 for receiving and processing the reproduction output of the head, and a luminance signal and a color signal in the VTR video signal processing system for processing the liquid crystal panel; A liquid crystal panel drive circuit system 8 for driving a light source, a flood lamp 43 for projecting a reproduced image on a screen, and an AC power source converted into direct current to convert the VTR image signal processing system, a liquid crystal panel drive circuit system, A transmitter-embedded VTR provided with an ammeter 42 for supplying a lamp, comprising: switching means 41 for turning on / off the floodlight lamp and amplifying a detection signal K in the liquid crystal panel drive circuit system; An amplifier (45), and the control signal (K ') amplified by the detection signal, the switching means is turned on, so that the flood lamp is turned on, VTR with a built-in liquid crystal projector 제2항에 있어서, 상기 검출신호(K)는, 상기 액정패널 구동회로계내의 컬러신호 복조기(33)에서의 컬러 신호인 것을 특징으로 하는 액정투광기를 내장한 VTR3. The VTR incorporating a liquid crystal projector according to claim 2, wherein said detection signal (K) is a color signal from a color signal demodulator (33) in said liquid crystal panel drive circuit system. 제2항에 있어서, 상기 검출신호(K)는, 상기 VTR 영상신호 처리계내의 컬러신호 복조기에서의 컬러킬러신호인 것을 특징으로 하는 액정투광기를 내장한 VTRThe VTR with a liquid crystal projector according to claim 2, wherein the detection signal (K) is a color killer signal in a color signal demodulator in the VTR video signal processing system. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940025453A 1993-12-27 1994-10-05 Vtr with lcd projector KR0152778B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP332539/1993 1993-12-27
JP5332539A JPH07210986A (en) 1993-12-27 1993-12-27 Vtr containing liquid crystal projector

Publications (2)

Publication Number Publication Date
KR950020635A true KR950020635A (en) 1995-07-24
KR0152778B1 KR0152778B1 (en) 1998-10-15

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KR1019940025453A KR0152778B1 (en) 1993-12-27 1994-10-05 Vtr with lcd projector

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JP (1) JPH07210986A (en)
KR (1) KR0152778B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7393110B2 (en) * 2004-07-06 2008-07-01 Hewlett-Packard Development Company, L.P. Media projector system

Also Published As

Publication number Publication date
KR0152778B1 (en) 1998-10-15
JPH07210986A (en) 1995-08-11

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