KR930001724A - Dynamic regeneration circuit and method - Google Patents

Dynamic regeneration circuit and method Download PDF

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Publication number
KR930001724A
KR930001724A KR1019910010966A KR910010966A KR930001724A KR 930001724 A KR930001724 A KR 930001724A KR 1019910010966 A KR1019910010966 A KR 1019910010966A KR 910010966 A KR910010966 A KR 910010966A KR 930001724 A KR930001724 A KR 930001724A
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South Korea
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luminance
signal
time
frequency
reproducing
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KR1019910010966A
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Korean (ko)
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KR930008717B1 (en
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여권
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강진구
삼성전자 주식회사
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/44Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57Control of contrast or brightness

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

내용 없음No content

Description

동적응재생회로 및 방식Dynamic regeneration circuit and method

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

제1도는 본 발명에 의한 동적응재생회로 및 방식의 실시예를 나타내는 회로도이다.1 is a circuit diagram showing an embodiment of a dynamic regeneration circuit and method according to the present invention.

제2도는 표준 영상신호가 나타내는 주파수 영역을 표시한 그림이다.2 is a diagram showing the frequency domain indicated by the standard video signal.

제3도는 중첩된 영상신호의 주파수 영역을 표시한 그림이다.3 is a diagram showing the frequency domain of the superimposed video signals.

Claims (10)

고주파휘도성분이 중첩반송파에 의해 저주파휘도성분에 중첩된 전대역폭의 휘도신호를 기록매체로부터 재생하는 휘도재생수단올 구비한 영상신호재생시스템에 있어서, 상기 휘도재생수단으로 부터의 중첩된 전대역폭의 휘도신호를 필터링하여 시간적으로 변화되지 않는 저주파휘도성분을 검출하기 위한 시간축저역통과필터와, 상기휘도재생수단으로 부터의 중첩된 전대역폭의 휘도신호를 필터링하여 시간적으로 변화하는 저주파휘도성분과 중첩된 고주파휘도 성분을 분리하기 위한 시간축고역통과필터와, 상기 휘도재생수단으로 부터의 출력중 중첩된 고주파휘도성본을 원래의 주파수대역으로 펼치기 위한 고주파성분펼침수단과, 상기 휘도재생수단으로 부터의 중첩된 전대역폭의 휘도신호로 부터 동신호를 검출하기 위한 동신호검출수단과, 상기 검출된 동신호에 따라 상기 펼쳐진 고주파휘도성분을 감쇠시키는 제1휘도조절수단과, 상기 검출된 동신호에 따라 상기 시간축고역통파필터로 부터의 출력을 감쇠시키는 제2휘도조절수단과, 상기 시간축저역통과필터로 부터의 출력 및 제1,2휘도조절수단으로 부터의 출력들을 혼합하기 위한 가산수단을 포함함을 특징으로 하는 동적응재생회로.A video signal reproducing system comprising a reproducing means for reproducing a full-width luminance signal in which a high frequency luminance component is superimposed on a low frequency luminance component by an overlapping carrier from a recording medium, wherein the video signal reproducing system has a full width of the overlapping bandwidth from the luminance reproducing means. A time-base lowpass filter for detecting low-frequency luminance components that do not change in time by filtering the luminance signal, and superimposed with low-frequency luminance components that change in time by filtering luminance signals of superimposed full bandwidth from the luminance reproduction means. A time-base high pass filter for separating high frequency luminance components, High frequency component spreading means for spreading the superimposed high frequency luminance component of the output from the luminance reproducing means into the original frequency band, and a superimposition from the luminance reproducing means. A dynamic signal detecting means for detecting the dynamic signal from a luminance signal of full bandwidth; First luminance adjusting means for attenuating the unfolded high frequency luminance component according to the detected dynamic signal, second luminance adjusting means for attenuating the output from the time-axis high pass filter in accordance with the detected dynamic signal, and the time axis And adding means for mixing the output from the low pass filter and the outputs from the first and second luminance control means. 제1항에 있어서, 제1,2휘도조절수단은 서로 역방향 감쇠 특성을 갖는 제어용 감쇠기를 포함함을 특징으로하는 동적응재생회로.2. The dynamic response regeneration circuit as set forth in claim 1, wherein the first and second luminance control means include control attenuators having reverse attenuation characteristics. 제1항에 있어서, 제1,2휘도조절수단은 서로 보완적인 작동을 하는 제어용스위치를 포함함을 특징으로 하는 동적응재생회로.2. The dynamic response regeneration circuit according to claim 1, wherein the first and second luminance control means include a control switch which complements each other. 제1항, 제2항 및 제3항에 있어서, 상기 휘도재생수단으로 부터의 중첩된 전대역폭의 휘도신호의 대역을 제한하여 상기 시간축저역통과 필터, 시간축고역통과필터, 고주파성분펼침수단 및 동신호검출수단에 공급하는 대역제한수단을 더 구비함을 특징으로 하는 동적응재생회로.4. The apparatus according to claim 1, 2 and 3, wherein the time axis low pass filter, the time axis high pass filter, the high frequency component spreading means and the same are limited by limiting the band of the luminance signal of the overlapping full bandwidth from the brightness reproducing means. And a band limiting means for supplying the signal detecting means. 제4항에 있어서, 상기 대역제한수단이 수평축저역통과필터임을 특징으로 하는 동적응재생회로.5. The dynamic response regeneration circuit according to claim 4, wherein the band limiting means is a horizontal axis low pass filter. 고주파휘도성분이 중첩반송파에 의해 저주파휘도성분에 중첩된 전대역폭의 휘도신호를 기록매체로 부터 재생하는 휘도재생과정을 구비한 영상신호재생시스템에 있어서, 상기 휘도재생과정에서 재생되는 중첩된 전대역폭의 휘도신호를 필터링하여 시간적으로 변화되지 않는 저주파휘도성분을 검출하기 위한 시간축저역필터링과정과, 상기 휘도재생과정에서 재생되는 중첩된 전대역폭의 휘도신호를 필터링하여 시간적으로 변화하는 저주파휘도성분과 중첩된 고주파휘도 성분을 분리하기 위한 시간축고역필터링과정과, 상기 시간축고역필터링과정에서 분리되는 중첩된 고주파휘도성분을 원래의 주파수대역으로 펼치기 위한 고주파성분펼침과정과, 상기 휘도재생과정에서 재생되는 중첩된 전대역폭의 휘도신호로 부터 동신호를 검출하기 위한 동신호검출과정과, 상기 검출된 동신호에 따라 상기 펼쳐진 고주파휘도성분을 감쇠시키는 제1휘도조절과정과, 상기 검출된 동신호에 따라 상기시간축고역필터링과정에서 분리된 휘도신호를 감쇠시키는 제2휘도조절과정과, 상기 시간축저역필터링과정에 분리된 휘도신호 및 제1,2휘도조절 과정에서 조절된 휘도신호들을 혼합하기 위한 가산과정을 포함함을 특징으로하는 동적응재생방식.A video signal reproducing system having a luminance reproducing process of reproducing a luminance signal of a full bandwidth in which a high frequency luminance component is superimposed on a low frequency luminance component by an overlapping carrier from a recording medium, wherein the superimposed full bandwidth reproduced in the luminance reproducing process is provided. Time-base low-pass filtering process for detecting low-frequency luminance components that do not change in time by filtering the luminance signal of the signal, and overlapping with low-frequency luminance components that change in time by filtering the luminance signals of superimposed full bandwidth reproduced in the luminance reproduction process. A time-base high-pass filtering process for separating the high-frequency luminance components, a high-frequency component spreading process for unfolding the superimposed high-frequency luminance components separated in the time-base high-frequency filtering process, and an original frequency band; For detecting the same signal from the luminance signal of full bandwidth A first luminance adjustment process for attenuating the unfolded high frequency luminance component according to the detected call signal, a second luminance for attenuating the luminance signal separated in the time domain high pass filtering process according to the detected dynamic signal And an addition process for mixing the luminance signal separated in the temporal low pass filtering process and the luminance signals adjusted in the first and second luminance adjustment processes. 제6항에 있어서, 제1,2휘도조절과정은 서로 역방향 감쇠 특성으로 휘도신호를 감쇠시킴을 특징으로 하는 동적응재생방식.7. The dynamic response regeneration method as claimed in claim 6, wherein the first and second luminance control processes attenuate the luminance signals with reverse attenuation characteristics. 제6항에 있어서, 제1,2휘도조절과정은 서로 보완적인 스위칭작동을 수행함을 특징으로 하는 동적응재생방식.7. The dynamic response regeneration method as claimed in claim 6, wherein the first and second luminance control processes perform complementary switching operations. 제6항, 제7항 및 제8항에 있어서, 상기 시간축저역필터링과정, 시간축고역필터링과정, 동신호검출과정을 수행하기 전에 상기 휘도재생과정에서 재생되는 중첩된 전대역폭의 휘도신호의 대역을 제한하는 대역제한과정을 더 포함함을 특징으로 하는 동적응재생방식.9. The method of claim 6, 7, and 8, wherein the bands of the superimposed full bandwidth luminance signals reproduced in the luminance reproduction process before the time axis low pass filtering process, the time axis high pass filtering process, and the dynamic signal detection process are performed. Dynamic response method, characterized in that it further comprises a band limiting process. 제9항에 있어서, 대역제한과정이 수평저역필터링함을 특징으로 하는 동적응재생방식10. The dynamic adaptive regeneration method as claimed in claim 9, wherein the band limiting process is horizontal low pass filtering. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910010966A 1991-06-28 1991-06-28 Dynamic adaptive brightness control apparatus and method KR930008717B1 (en)

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KR1019910010966A KR930008717B1 (en) 1991-06-28 1991-06-28 Dynamic adaptive brightness control apparatus and method

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KR1019910010966A KR930008717B1 (en) 1991-06-28 1991-06-28 Dynamic adaptive brightness control apparatus and method

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KR930001724A true KR930001724A (en) 1993-01-16
KR930008717B1 KR930008717B1 (en) 1993-09-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100324568B1 (en) * 1999-04-30 2002-02-16 곽정소 Readout circuit in infrared imaging detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100324568B1 (en) * 1999-04-30 2002-02-16 곽정소 Readout circuit in infrared imaging detector

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KR930008717B1 (en) 1993-09-13

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