KR920014243A - HDTV / NTSC receiver automatic switching device - Google Patents

HDTV / NTSC receiver automatic switching device Download PDF

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Publication number
KR920014243A
KR920014243A KR1019900021229A KR900021229A KR920014243A KR 920014243 A KR920014243 A KR 920014243A KR 1019900021229 A KR1019900021229 A KR 1019900021229A KR 900021229 A KR900021229 A KR 900021229A KR 920014243 A KR920014243 A KR 920014243A
Authority
KR
South Korea
Prior art keywords
signal
synchronous
ntsc
hdtv
separating
Prior art date
Application number
KR1019900021229A
Other languages
Korean (ko)
Other versions
KR950002660B1 (en
Inventor
이기석
Original Assignee
강진구
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 강진구, 삼성전자 주식회사 filed Critical 강진구
Priority to KR1019900021229A priority Critical patent/KR950002660B1/en
Publication of KR920014243A publication Critical patent/KR920014243A/en
Application granted granted Critical
Publication of KR950002660B1 publication Critical patent/KR950002660B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0125—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards being a high definition standard
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/06—Generation of synchronising signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/08—Separation of synchronising signals from picture signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/45—Generation or recovery of colour sub-carriers

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Color Television Systems (AREA)

Abstract

내용 없음No content

Description

HDTV/NTSC 수신자동절환장치HDTV / NTSC receiver automatic switching device

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

제 1도는 본 발명에 의한 수신자동절환장치의 전체구성블럭도, 제2도는 본 발명에 채용된 HDTV 동기신호분리부 및 제1동기신호 판정부의 상세구성블럭도, 제3도는 본 발명에 채용된 NTSC 동기신호분리부 및 제2동기신호 판정부의 상세구성블럭도.1 is an overall configuration block diagram of the automatic receiving apparatus according to the present invention, FIG. 2 is a detailed block diagram of the HDTV synchronization signal separating unit and the first synchronization signal determining unit employed in the present invention, and FIG. Detailed block diagram of the NTSC synchronization signal separation unit and the second synchronization signal determination unit.

Claims (3)

HDTV 방송신호인 뮤즈신호를 영상처리하는 제1신호처리수단과, NTSC방송신호를 영상처리하는 제2신호처리수단과, 뮤즈신호의 동기신호를 분리하는 제1동기분리수단돠, NTSC방송신호의 동기신호를 분리하는 제2동기분리수단과, 상기 제1동기분리수단 및 제2동기분리수단의 출력신호와 입력신호와의 동기여부를 판정하여 HD-MUSE방송 또는 NTSC방송인지를 판별하는 제어수단과, 상기 제어수단의 제어신호에 의해 제1동기분리수단 및 제1동기분리수단의 출력신호를 절환하여 동기신호를 출력하는 제1절환수단과, 상기 제어수단의 제어신호에 의해 제1신호처리수단 및 제2신호처리수단을 절환하여 영상신호를 출력하는 제2절환수단을 포함함을 특징으로하는 HDTV/NTSC 수신자동절환장치.First signal processing means for image processing a mute signal, which is an HDTV broadcast signal, second signal processing means for image processing an NTSC broadcast signal, first synchronous separation means for separating a synchronous signal of a mute signal, and NTSC broadcast signal Second synchronous separation means for separating synchronous signals, and control means for determining whether the output signal and the input signal of the first synchronous separation means and the second synchronous separation means are synchronized with each other to determine whether they are HD-MUSE broadcasting or NTSC broadcasting. And first switching means for switching the output signals of the first synchronous separating means and the first synchronous separating means according to the control signal of the control means to output the synchronous signal, and the first signal processing by the control signal of the control means. And a second switching means for switching the means and the second signal processing means to output an image signal. 제1항에 있어서, 제1동기분리수단은 입력시호의 프레임동기신호를 검출하는 프레임동기 검출기와, 내부의 프레임동기신호를 발생하는 PLL(Phase Locked Loop) 회로와, PLL상기 회로의 제어신호에 따라 수평 및 수직동기신호를 발생시키는 수평 및 수직 동기신호 발생기를 포함함을 특징으로 하는 HDTV/NTSC수신 자동절환장치.2. The apparatus of claim 1, wherein the first synchronous separating means comprises a frame synchronous detector for detecting a frame synchronous signal of an input signal, a phase locked loop (PLL) circuit for generating an internal frame synchronous signal, and a control signal of the PLL circuit. HDTV / NTSC receiving automatic switching device, characterized in that it comprises a horizontal and vertical synchronization signal generator for generating a horizontal and vertical synchronization signal. 제 1항에 있어서, 제2동기분리수단은 입력신호의 색부반송차신호를 검출하는 색부반송파검출기와, 수평 및 수직동기신호와 색부반송파를 발생하는 PLL회로를 포함함을 특징으로 하는 HDTV/NTSC수신자동절환 장치.2. The HDTV / NTSC of claim 1, wherein the second synchronous separation means includes a color carrier detector for detecting a color carrier signal of an input signal, and a PLL circuit for generating horizontal and vertical synchronous signals and a color carrier. Receiving automatic switching device. ※ 참고사항 : 최초출원내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019900021229A 1990-12-20 1990-12-20 Hdtv/ntsc reception automatic change apparatus KR950002660B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900021229A KR950002660B1 (en) 1990-12-20 1990-12-20 Hdtv/ntsc reception automatic change apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900021229A KR950002660B1 (en) 1990-12-20 1990-12-20 Hdtv/ntsc reception automatic change apparatus

Publications (2)

Publication Number Publication Date
KR920014243A true KR920014243A (en) 1992-07-30
KR950002660B1 KR950002660B1 (en) 1995-03-24

Family

ID=19308008

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900021229A KR950002660B1 (en) 1990-12-20 1990-12-20 Hdtv/ntsc reception automatic change apparatus

Country Status (1)

Country Link
KR (1) KR950002660B1 (en)

Also Published As

Publication number Publication date
KR950002660B1 (en) 1995-03-24

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