KR880010558A - 변조기 - Google Patents

변조기 Download PDF

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Publication number
KR880010558A
KR880010558A KR1019880000915A KR880000915A KR880010558A KR 880010558 A KR880010558 A KR 880010558A KR 1019880000915 A KR1019880000915 A KR 1019880000915A KR 880000915 A KR880000915 A KR 880000915A KR 880010558 A KR880010558 A KR 880010558A
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KR
South Korea
Prior art keywords
input
frequency
modulator
output
electrical signal
Prior art date
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Application number
KR1019880000915A
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English (en)
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KR960009967B1 (ko
Inventor
헤르만 프랑시스쿠스
Original Assignee
이반 밀러 레르너
엔.브이.필립스 글로아이람펜파브리켄
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Application filed by 이반 밀러 레르너, 엔.브이.필립스 글로아이람펜파브리켄 filed Critical 이반 밀러 레르너
Publication of KR880010558A publication Critical patent/KR880010558A/ko
Application granted granted Critical
Publication of KR960009967B1 publication Critical patent/KR960009967B1/ko
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Processing Of Color Television Signals (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Solid State Image Pick-Up Elements (AREA)
  • Networks Using Active Elements (AREA)

Abstract

내용 없음

Description

변조기
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본 발명에 따르는 변조기의 실시예 도시도.
제2a도는 V2000 비디오 레코더 수단에 의해 자기기록 반송파상에 기록된 PAL-비디오 신호의 개략적인 주파수-응답 특성 도시도.
제2b도는 PAL 텔레비젼 신호의 개략적인 주파수-응답 특성 도시도.

Claims (6)

  1. 제1전기 신호를 수신하는 제1입력 단자와, 제2전기 신호를 공급하는 출력단자와, 제1입력 단자에 접속된 입력과 출력 단자에 접속된 출력을 갖는 콤 필터를 구비하고, 콤필터의 입력은 신호-결합 유니트의 제1 입력에 접속되며 지연 수단을 통해 신호-결합 유니트의 제2입력에 접속되고, 그의 출력은 콤 필터의 출력에 접속되며, 또 최소한 제2 주파수와 거의 대응하는 주파수를 갖는 제4전기 신호를 수신하는 제3입력 단자와 최소한 제1주파수와 거의 대응으하는 주파수를 갖는 제3전기 신호를 수신하는 제2입력 단자를 포함하고, 신호 결합 유니트에 접속된 출력을 갖고 제1입력 단자에 접속된 제2입력을 갖는 제2혼합 단계의 제1입력에 접속된 출력을 갖는 제1혼합 단계의 각 입력에 접속된 제2 및 제3입력 단자를 구비하고, 제1주파수는 제2주파수보다 낮은 것으로, 제1주파수의 반송파상에 변조된 제1전기 신호를 제2주파수의 반송파상에 변조된 제2전기 신호로 변환시키는 변조기에 있어서, 제2혼합 단계의 제2입력을 콤 필터의 입력에 접속되고, 제2 및 제3 입력 단자 또한 신호-결합 유니트의 제2입력에 접속된 출력을 가지며 지연수단의 출력에 접속된 제2 입력을 갖는 제4혼합 단계의 제1 및 제2입력에 각각 접속된 것을 특징으로 하는 변조기.
  2. 제1항에 있어서, 상기 지연수단은 전하 결합 소자(CCD)로 구성된 것을 특징으로 하는 변조기.
  3. 제1항에 있어서, 상기 지연수단은 예로, 버킷 브리게이드인 전하 전송 소자로 구성된 것을 특징으로 하는 변조기.
  4. 선행항중 한 항에 있어서, 또 다른 지연수단은 제3혼합 단계의 제1입력과 제2입력 단자 사이에 배열된 제1언급된 지연수단과 같은 지연시간을 갖는 것을 특징으로 하는 변조기.
  5. 선행항중 한 항에 있어서, 양극성 변환기는 제3혼합 단계의 제2입력과 제3입력 단자 사이에 배열된 것을 특징으로 하는 변조기.
  6. 선행항중 한 항에 청구된 바와 같은 변조기가 제공된 비디오 레코더.
    ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019880000915A 1987-02-02 1988-02-02 콤필터를 구비하는 변조기 및 그 변조기가 제공된 비디오 레코더 Expired - Fee Related KR960009967B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8700244 1987-02-02
NL8700244A NL8700244A (nl) 1987-02-02 1987-02-02 Modulator met een kamfilter.

Publications (2)

Publication Number Publication Date
KR880010558A true KR880010558A (ko) 1988-10-10
KR960009967B1 KR960009967B1 (ko) 1996-07-25

Family

ID=19849503

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019880000915A Expired - Fee Related KR960009967B1 (ko) 1987-02-02 1988-02-02 콤필터를 구비하는 변조기 및 그 변조기가 제공된 비디오 레코더

Country Status (7)

Country Link
US (1) US4816780A (ko)
EP (1) EP0279478B1 (ko)
JP (1) JP2703247B2 (ko)
KR (1) KR960009967B1 (ko)
AT (1) ATE69129T1 (ko)
DE (1) DE3865855D1 (ko)
NL (1) NL8700244A (ko)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3323611B2 (ja) * 1993-06-25 2002-09-09 株式会社日立製作所 Ｖｔｒ用周波数変換装置
DE19523433C2 (de) * 1995-06-28 1998-04-23 Telefunken Microelectron Schaltungsanordnung zur Frequenzumsetzung
DE19523432A1 (de) * 1995-06-28 1997-01-02 Telefunken Microelectron Schaltungsanordnung zur Frequenzumsetzung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996606A (en) * 1975-03-18 1976-12-07 Rca Corporation Comb filter for video processing
US3996610A (en) * 1975-12-29 1976-12-07 Rca Corporation Comb filter apparatus for video playback systems
NL175575C (nl) * 1976-05-28 1984-11-16 Philips Nv Filter- en demodulatie-inrichting.
JPS57124987A (en) * 1981-01-26 1982-08-04 Matsushita Electric Ind Co Ltd Processor for pal color video signal
JPS57141193A (en) * 1982-01-18 1982-09-01 Sony Corp Regenerating device for color television signal of pal system
US4754340A (en) * 1983-11-01 1988-06-28 Matsushita Electric Industrial Co., Ltd. Method of reproducing a chrominance signal from a previously low-range-converted chrominance signal using comb filtering and sampling

Also Published As

Publication number Publication date
EP0279478A1 (en) 1988-08-24
ATE69129T1 (de) 1991-11-15
US4816780A (en) 1989-03-28
EP0279478B1 (en) 1991-10-30
JPS6464487A (en) 1989-03-10
JP2703247B2 (ja) 1998-01-26
KR960009967B1 (ko) 1996-07-25
DE3865855D1 (de) 1991-12-05
NL8700244A (nl) 1988-09-01

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