KR960043925A - Start code detection device of arm plus signal - Google Patents

Start code detection device of arm plus signal Download PDF

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Publication number
KR960043925A
KR960043925A KR1019950012700A KR19950012700A KR960043925A KR 960043925 A KR960043925 A KR 960043925A KR 1019950012700 A KR1019950012700 A KR 1019950012700A KR 19950012700 A KR19950012700 A KR 19950012700A KR 960043925 A KR960043925 A KR 960043925A
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KR
South Korea
Prior art keywords
line
signal
data
start code
signal strength
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KR1019950012700A
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Korean (ko)
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KR0152837B1 (en
Inventor
맹성열
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구자홍
Lg 전자 주식회사
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Priority to KR1019950012700A priority Critical patent/KR0152837B1/en
Publication of KR960043925A publication Critical patent/KR960043925A/en
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Publication of KR0152837B1 publication Critical patent/KR0152837B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N11/00—Colour television systems
    • H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
    • H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
    • H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
    • H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
    • H04N11/167—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system a resolution-increasing signal being multiplexed to the PAL-system signal, e.g. PAL-PLUS-system
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M9/00—Parallel/series conversion or vice versa
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/465—Synchronisation of the PAL-switch

Abstract

본 발명은 팔플러스신호의 시작코드검출장치에 관한 것으로, 팔플러스(PAL+)신호의 세기가 작더라도 팔플러스신호의 시작코드를 검출할 수 있도록, 입력되는 팔플러스신호로부터 라인 '23'의 데이타를 라인23 데이타 추출부(200)에서 추출하고추출된 라인23 데이타를 신호세기인식부(500)에서 인식한 상기 팔플러스신호의 세기에 따라 팔플러스규격의 시작코드패턴과 모든비트 또는 일부비트를 비교하여 시작코드를 검출한다. 또, 마스크신호생성기(406)를 이용해서 라인23의 WSS데이타구간을 검출해서 이 WSS데이타구간에서 시작코드를 검출함으로써 정확하게 시작코드를 검출하도록 한 것이다. 본 발명팔플러스신호의 시작코드검출장치는 팔플러스 티브이나 브이씨알 등에 적용되어 시작코드를 검출하는데 적용된다.The present invention relates to an apparatus for detecting a start code of an arm plus signal, and to detect a start code of an arm plus signal even when the strength of the arm plus (PAL +) signal is small. Extracts the start code pattern and all or some bits of the FalPlus specification according to the strength of the FalPlus signal recognized by the signal strength recognition unit 500 and extracts the extracted line 23 data from the line 23 data extractor 200. Compare and detect the start code. In addition, the mask signal generator 406 is used to detect the WSS data section of the line 23 and to detect the start code in the WSS data section so as to accurately detect the start code. The start code detecting device of the arm plus signal of the present invention is applied to detect a start code by applying Fal Plus TV or VRC.

Description

팔플러스신호의 시작코드검출장치Start code detection device of arm plus signal

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 종래 팔플러스신호의 시작코드검출장치 블럭도, 제4도는 본 발명 팔플러스신호의 시작코드검출장치 블럭도.1 is a block diagram of a conventional start code detector of an arm plus signal, and FIG. 4 is a block diagram of a start code detector of an arm plus signal of the present invention.

Claims (4)

팔플러스신호가 입력되면 상기 팔플러스신호의 라인23 데이타를 추출하는 라인23 데이타 추출부와; 상기라인23 데이타 추출부에 입력되는 팔플러스신호의 신호세기를 인식하는 신호세기인식부와; 상기 신호세기인식부에서 신호세기를 일정레벨이상으로 인식하면 상기 라인23 데이타 추출부가 추출한 라인23 데이타의 전체비트와 팔플러스규격의 시작코드패턴의 전체비트를 비교하고 일정레벨 이하로 인식하면 시작코드패턴의 일부를 비교해서, 일치여부에 따라 상기 라인23 데이타 추출부에서 추출된 라인23 데이타가 원하는 시작코드인지를 판단하는 시작코드비교부를 구비한 것을 특징으로 하는 팔플러스신호의 시작코드검출장치.A line 23 data extracting unit configured to extract line 23 data of the arm plus signal when an arm plus signal is input; A signal strength recognizing unit recognizing a signal strength of the FalPlus signal input to the line 23 data extracting unit; When the signal strength recognition unit recognizes the signal strength at a predetermined level or more, the entire bit of the line 23 data extracted by the line 23 data extracting unit and all the bits of the start code pattern of the FalPlus standard are compared. And a start code comparison unit for comparing a part of the pattern to determine whether the line 23 data extracted by the line 23 data extracting unit is a desired start code. 제1항에 있어서, 라인23 데이타 추출부는, 입력되는 팔플러스신호를 슬라이싱해서 '슬라이싱된 데이타'를출력하는 슬라이서와; 상기 팔플러스신호의 라인23 구간에서 하이, 라인23 구간이외의 구간에서 로우의 라인23신호를 생성하는 마커생성기와; 상기 마커생성기의 라인23신호를 계수해서 라인23의 WSS 데이타구간에서 하이인 마스크신호를 생성하는 마스크신호생성기와; 상기 마스크신호생성기에서 하이의 마스크신호가 출력되는 동안에 상기 슬라이서의 슬라이싱된데이타를 통과시키는 마스킹부와; 상기 마스킹부에서 통과된 슬라이싱된 데이타를 24비트 데이타로 변환하는 직렬/병렬변환기를 구비한 것을 특징으로 하는 팔플러스신호의 시작코드검출장치.2. The apparatus of claim 1, wherein the line 23 data extracting unit comprises: a slicer for slicing an input Fal plus signal to output 'sliced data'; A marker generator for generating a line 23 signal of a low line in a section other than a line 23 section in a line 23 section of the arm plus signal; A mask signal generator that counts the line 23 signal of the marker generator to generate a mask signal that is high in the WSS data section of line 23; A masking unit configured to pass sliced data of the slicer while a high mask signal is output from the mask signal generator; And a serial / parallel converter for converting the sliced data passed by the masking unit into 24-bit data. 제1항에 있어서, 신호세기인식부는 상기 라인23 데이타 추출부의 슬라이서에 입력되는 팔플러스신호의 세기에 따라 구해진 신호세기 데이타를 출력하는 신호세기검출기와, 상기 신호세기검출기의 신호세기 데이타를 문턱레벨데이타와 비교해서 문턱레벨이상인지 이하인지를 판별하는 레벨판별기를 구비한 것을 특징으로 하는 팔플러스신호의 시작코드검출장치.The signal strength detector of claim 1, further comprising: a signal strength detector for outputting signal strength data obtained according to the strength of the Falplus signal input to the slicer of the line 23 data extractor; and a threshold level of the signal strength data of the signal strength detector; And a level discriminator for discriminating whether it is above or below a threshold level in comparison with data. 제1항에 있어서, 시작코드패턴의 일부비트는 전후에 상태천이가 없는 비트인 것을 특징으로 하는 팔플러스신호의 시작코드검출장치.The apparatus of claim 1, wherein some bits of the start code pattern are bits without state transitions before and after. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950012700A 1995-05-20 1995-05-20 The start code detection apparatus of pal plus signal KR0152837B1 (en)

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KR1019950012700A KR0152837B1 (en) 1995-05-20 1995-05-20 The start code detection apparatus of pal plus signal

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Application Number Priority Date Filing Date Title
KR1019950012700A KR0152837B1 (en) 1995-05-20 1995-05-20 The start code detection apparatus of pal plus signal

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KR960043925A true KR960043925A (en) 1996-12-23
KR0152837B1 KR0152837B1 (en) 1998-10-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388673B1 (en) * 2001-05-18 2003-06-25 삼성전자주식회사 displaying device and controlling method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100388673B1 (en) * 2001-05-18 2003-06-25 삼성전자주식회사 displaying device and controlling method thereof

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