KR950004911A - Ghost Removal Device - Google Patents

Ghost Removal Device Download PDF

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Publication number
KR950004911A
KR950004911A KR1019930012812A KR930012812A KR950004911A KR 950004911 A KR950004911 A KR 950004911A KR 1019930012812 A KR1019930012812 A KR 1019930012812A KR 930012812 A KR930012812 A KR 930012812A KR 950004911 A KR950004911 A KR 950004911A
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KR
South Korea
Prior art keywords
signal
ghost
shortened
gcr
filter coefficient
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KR1019930012812A
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Korean (ko)
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KR0144839B1 (en
Inventor
김기범
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김광호
삼성전자 주식회사
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Priority to KR1019930012812A priority Critical patent/KR0144839B1/en
Publication of KR950004911A publication Critical patent/KR950004911A/en
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Publication of KR0144839B1 publication Critical patent/KR0144839B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/213—Circuitry for suppressing or minimising impulsive noise

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

Abstract

본 발명은 시퀸길이가 짧은 단축 GCR 신호를 사용하여 TV 전송신호에 혼입된 고스트성분을 제거하기 위한 고스트제거장치에 관한 것으로, 파형등화필터링수단, 고스트제거필터링수단, GCR 신호검출수단, 기준신호로서 단축 GCR 신호를 저장하는 수단, 검출된 GCR 신호와 단축 GCR 신호를 상관연산하는 수단, 상관연산결과에 따라 필터링수단의 필터계수를 정정하는 수단을 포함한다. 본 발명에 의한 고스트제거장치는 단축 GCR 신호를 사용함으로써, 고스트검출범위가 확장되고, 고스트검출에 사용되는 메모리의 용량이 감소되고, 데이타처리속도가 증가하는 효과가 있다.The present invention relates to a ghost removal device for removing ghost components mixed into a TV transmission signal by using a shortened GCR signal having a short sequin length. Means for storing the shortened GCR signal, means for correlating the detected GCR signal with the shortened GCR signal, and means for correcting the filter coefficient of the filtering means according to the correlation operation result. The ghost elimination apparatus according to the present invention has the effect of extending the ghost detection range, reducing the capacity of the memory used for ghost detection, and increasing the data processing speed by using a shortened GCR signal.

Description

고스트제거장치Ghost Removal Device

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

제 1 도는 종래의 CS-GCR 신호쌍, 제 2 도는 데이타 시퀀스길이가 320인 단축 CS-320GCR 신호쌍, 제 3 도는 데이타 시퀀스길이가 256인 단축 CS-256GCR 신호쌍, 제 4 도는 데이타 시퀀스길이가 256인 단축 CS-256GCR 신호쌍, 제 5 도는 데이타 시퀀스길이가 240인 단축 CS-240GCR 신호쌍, 제 6 도는 본 발명에 의한 고스트제거장치의 일 실시예를 나타내는 블럭도, 제 7 도는 제 6 도의 각 동작부에 대한 파형도.1 is a conventional CS-GCR signal pair, 2 is a shortened CS-320GCR signal pair having a data sequence length of 320, 3 is a shortened CS-256GCR signal pair having a data sequence length of 256, and 4 is a shortened data sequence length. 256 is a shortened CS-256GCR signal pair, FIG. 5 is a shortened CS-240GCR signal pair having a data sequence length of 240, FIG. 6 is a block diagram showing an embodiment of a ghost elimination device according to the present invention, FIG. Waveform diagram for each operation part.

Claims (6)

수신된 TV 신호에서 고스트성분을 제거하기 위한 고스트제거장치에 있어서, 상기 고스트가 포함된 TV 신호와 소정의 필터계수데이타를 공급받아, 고스트가 포함된 TV 신호를 파형등화필터링하는 수단; TV 신호와 소정의 필터계수데이타를 공급받아, TV 신호에서 고스트를 제거하는 고스트제거필티링수단; 상기 파형등화필터링수단의 출력신호와 상기 고스트제거필터링수단의 출력신호를 가산하여, 상기 고스트제거필터링수단으로 공급하는 가산기; 2개 입력단자로 상기 고스트가 포함된 TV 신호와 상기 가산기의 출력신호를 각각 공급받고, 2개 입력신호중 하나를 선택하여 출력하는 스위칭수단; 상기 스위칭수단으로부터 공급되는 TV 신호에서 GCR 신호를 검출하는 GCR 신호검출수단; 소정의 시퀀길이를 갖고 기준 GCR 신호인 단축 GCR 신호를 저장하는 기준신호저장수단; 상기 GCR 신호검출수단에서 검출된 GCR 신호와 상기 기준신호저장부에서 단축 GCR 신호를 공급받아, 2개 GCR 신호를 상관연산하는 상관수단; 및 상기 상관수단으로부터 공급되는 상관연산결과데이타에 따라 가변되는 필터게수를 산출하여, 상기 파형등화필터링 수단 및 고스트제거필터링수단으로 각각 공급하는 필터계수정정수단을 포함하는 것을 특징으로 하는 고스트 제거장치.CLAIMS 1. A ghost removal apparatus for removing ghost components from a received TV signal, comprising: means for receiving a TV signal including ghost and predetermined filter coefficient data and performing waveform equalization filtering on a TV signal including ghost; Ghost removal filter teiling means for receiving a TV signal and predetermined filter coefficient data to remove ghost from the TV signal; An adder for adding the output signal of the waveform equalization filtering means and the output signal of the ghost elimination filtering means and supplying the output signal to the ghost elimination filtering means; Switching means for receiving a TV signal including the ghost and an output signal of the adder through two input terminals, respectively, and selecting one of two input signals and outputting the selected signal; GCR signal detection means for detecting a GCR signal from the TV signal supplied from the switching means; Reference signal storage means for storing a shortened GCR signal having a predetermined sequence length and being a reference GCR signal; Correlating means for receiving a GCR signal detected by the GCR signal detecting means and a shortened GCR signal from the reference signal storage, and correlating two GCR signals; And a filter coefficient correction means for calculating a filter coefficient that is variable according to correlation calculation result data supplied from the correlation means, and supplying the filter coefficient to the waveform equalization filtering means and the ghost removal filtering means, respectively. 제 1 항에 있어서, 상기 스위칭수단을 전원을 턴온하거나, 채널을 전환할 때 상기 고스트가 포함된 TV 신호를 선택하여 출력하고, 상기 파형등화필터링수단 및 고스트제거필터링수단이 필터계수를 각각 공급받아 필터링동작을 수행할 때 상기 가산기의 출력신호를 선택하여 출력하는 것을 특징으로 하는 고스트제거장치.The apparatus of claim 1, wherein the switching means selects and outputs a TV signal including the ghost when the power is turned on or switches a channel, and the waveform equalization filtering means and the ghost removal filtering means receive filter coefficients, respectively. And removing the output signal of the adder when performing the filtering operation. 제 1 항에 있어서, 상기 기준신호저장부는 "+1,0,-1"의 3값으로 이루어지고 데이타 시퀀길이가 "320"인 단축 CS-320GCR 신호쌍을 저장하는 것을 특징으로 하는 고스트제거장치.The ghost elimination device according to claim 1, wherein the reference signal storage unit stores a shortened CS-320GCR signal pair having a value of "+ 1,0, -1" and having a data sequence length of "320". . 제 1 항에 있어서, 상기 기준신호저장부는 "+1,-1"의 2값으로 이루어지고 데이타 시퀀길이가 "256"인 단축 CS-256GCR 신호쌍을 저장하는 것을 특징으로 하는 고스트제거장치.2. The ghost elimination device according to claim 1, wherein the reference signal storage unit stores a shortened CS-256GCR signal pair having two values of "+ 1, -1" and having a data sequence length of "256". 제 1 항에 있어서, 상기 기준신호저장부는 "+1,0,-1"의 3값으로 이루어지고 데이타 시퀀길이가 "256"인 단축 CS-256GCR 신호쌍을 저장하는 것을 특징으로 하는 고스트제거장치.2. The ghost elimination device according to claim 1, wherein the reference signal storage unit stores a shortened CS-256GCR signal pair having three values of "+ 1,0, -1" and having a data sequence length of "256". . 제 1 항에 있어서, 상기 기준신호저장부는 "+1,0,-1"의 3값으로 이루어지고 데이타 시퀀길이가 "240"인 단축 CS-240GCR 신호쌍을 저장하는 것을 특징으로 하는 고스트제거장치.The ghost elimination device according to claim 1, wherein the reference signal storage unit stores a shortened CS-240GCR signal pair having a value of "+ 1,0, -1" and having a data sequence length of "240". . ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930012812A 1993-07-08 1993-07-08 A ghost cancelling apparatus KR0144839B1 (en)

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Application Number Priority Date Filing Date Title
KR1019930012812A KR0144839B1 (en) 1993-07-08 1993-07-08 A ghost cancelling apparatus

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Application Number Priority Date Filing Date Title
KR1019930012812A KR0144839B1 (en) 1993-07-08 1993-07-08 A ghost cancelling apparatus

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KR950004911A true KR950004911A (en) 1995-02-18
KR0144839B1 KR0144839B1 (en) 1998-07-15

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130034783A (en) 2011-09-29 2013-04-08 현대중공업 주식회사 Deck housing construction with arrangement of stiffeners-brackets for pre-erection process and mounting method thereof
KR20130034779A (en) 2011-09-29 2013-04-08 현대중공업 주식회사 Deck housing construction with stiffeners-brackets for pre-erection process and mounting method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130034783A (en) 2011-09-29 2013-04-08 현대중공업 주식회사 Deck housing construction with arrangement of stiffeners-brackets for pre-erection process and mounting method thereof
KR20130034779A (en) 2011-09-29 2013-04-08 현대중공업 주식회사 Deck housing construction with stiffeners-brackets for pre-erection process and mounting method thereof

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