KR100281885B1 - 디지털 신호 수신장치의 클럭 주파수 변환장치 - Google Patents
디지털 신호 수신장치의 클럭 주파수 변환장치 Download PDFInfo
- Publication number
- KR100281885B1 KR100281885B1 KR19980059415A KR19980059415A KR100281885B1 KR 100281885 B1 KR100281885 B1 KR 100281885B1 KR 19980059415 A KR19980059415 A KR 19980059415A KR 19980059415 A KR19980059415 A KR 19980059415A KR 100281885 B1 KR100281885 B1 KR 100281885B1
- Authority
- KR
- South Korea
- Prior art keywords
- clock frequency
- loop circuit
- phase
- digital signal
- output
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
-
- 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
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- 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
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
-
- 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
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
- H03L7/23—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop with pulse counters or frequency dividers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
- H04N21/4263—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners
- H04N21/42638—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific tuning arrangements, e.g. two tuners involving a hybrid front-end, e.g. analog and digital tuners
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4305—Synchronising client clock from received content stream, e.g. locking decoder clock with encoder clock, extraction of the PCR packets
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
-
- 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
- H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
- H04N7/0122—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal the input and the output signals having different aspect ratios
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Synchronizing For Television (AREA)
Abstract
Description
Claims (3)
- 디지털신호 수신장치에 있어서,제1위상동기루프회로;제2위상동기루프회로;소정의 제어신호에 따라, 상기 제1 및 제2위상동기루프회로에서 출력되는 클럭주파수를 선택하는 스위칭부; 및입력되는 디지털신호의 프레임 레이트에 따라, 그에 상응하는 클럭주파수를 출력하도록 상기 스위칭부를 제어하는 제어부를 포함하는 디지털신호 수신장치의 클럭주파수 변환장치.
- 제1항에 있어서, 상기 제1위상루프회로는 74.25MHz의 클럭주파수를 발생시키고, 상기 제2위상루프회로는 74.175MHz의 클럭주파수를 발생시킴을 특징으로 하는 디지털신호 수신장치의 클럭주파수 변환장치.
- 제1항에 있어서, 상기 제어부는 포맷변환회로에서 출력되는 프레임 레이트가 60, 30, 24 Hz이면, 상기 제1위상루프회로에서 출력되는 클럭주파수를 선택하도록 상기 스위칭부를 제어하고, 프레임 레이트가 59.94, 29.97, 23.97 Hz이면, 상기 제2위상루프회로에서 출력되는 클럭주파수를 선택하도록 상기 스위칭부를 제어함을 특징으로 하는 디지털신호 수신장치의 클럭주파수 변환장치.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR19980059415A KR100281885B1 (ko) | 1998-12-28 | 1998-12-28 | 디지털 신호 수신장치의 클럭 주파수 변환장치 |
CN99127055A CN1124030C (zh) | 1998-12-28 | 1999-12-24 | 在数字信号接收器中选择性地转换时钟频率的装置 |
US09/472,869 US7023485B1 (en) | 1998-12-28 | 1999-12-28 | Apparatus and method for selectively converting clock frequency in digital signal receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR19980059415A KR100281885B1 (ko) | 1998-12-28 | 1998-12-28 | 디지털 신호 수신장치의 클럭 주파수 변환장치 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000043102A KR20000043102A (ko) | 2000-07-15 |
KR100281885B1 true KR100281885B1 (ko) | 2001-02-15 |
Family
ID=36102003
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR19980059415A KR100281885B1 (ko) | 1998-12-28 | 1998-12-28 | 디지털 신호 수신장치의 클럭 주파수 변환장치 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7023485B1 (ko) |
KR (1) | KR100281885B1 (ko) |
CN (1) | CN1124030C (ko) |
Families Citing this family (16)
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KR100741764B1 (ko) * | 2000-01-12 | 2007-07-24 | 엘지전자 주식회사 | 디지털 티브이의 프레임 레이트 검출 장치 및 그 방법 |
US7460865B2 (en) | 2003-06-18 | 2008-12-02 | Fisher-Rosemount Systems, Inc. | Self-configuring communication networks for use with process control systems |
JP4871494B2 (ja) * | 2004-03-31 | 2012-02-08 | パナソニック株式会社 | 映像信号処理装置 |
US7747237B2 (en) * | 2004-04-09 | 2010-06-29 | Skyworks Solutions, Inc. | High agility frequency synthesizer phase-locked loop |
KR100622351B1 (ko) * | 2005-01-07 | 2006-09-19 | 삼성전자주식회사 | 비디오 화소 클록 생성방법 및 이를 이용한 비디오 화소클록 생성장치 |
US8160574B1 (en) | 2005-06-17 | 2012-04-17 | Fisher-Rosemount Systems, Inc. | Wireless architecture utilizing geo-referencing |
CN101056370B (zh) * | 2006-04-14 | 2011-02-02 | 凌阳科技股份有限公司 | 输出数字音视频广播数据的方法与数字音视频广播接收盒 |
WO2007139265A1 (en) * | 2006-05-25 | 2007-12-06 | Korea Research Institute Of Standards And Science | Method for providing self-surviving clock to be synchronized with a timecast in commercial broadcasting |
JP5019419B2 (ja) * | 2006-07-07 | 2012-09-05 | ルネサスエレクトロニクス株式会社 | 表示データ受信回路及び表示パネルドライバ |
EP1976110B1 (en) * | 2007-03-31 | 2014-01-01 | Sony Deutschland Gmbh | Circuit and method for processing an input signal |
KR101626990B1 (ko) * | 2010-02-26 | 2016-06-02 | 엘지전자 주식회사 | 영상표시기기에서 입력 신호 제어 방법 및 그 방송 수신기 |
KR101977016B1 (ko) * | 2011-12-30 | 2019-05-13 | 삼성전자 주식회사 | 방송 수신 시스템의 프론트 엔드 집적회로, 이를 포함하는 방송 수신 시스템, 및 이의 동작 방법 |
CN102724383A (zh) * | 2012-05-23 | 2012-10-10 | 常州芯奇微电子科技有限公司 | 多格式视频信号处理装置 |
KR20160044144A (ko) * | 2014-10-14 | 2016-04-25 | 삼성디스플레이 주식회사 | 표시장치 및 그것의 구동 방법 |
KR102452154B1 (ko) | 2015-10-27 | 2022-10-07 | 삼성전자주식회사 | 영상 처리 장치 및 이를 포함하는 표시 시스템 |
US12015873B1 (en) * | 2021-01-05 | 2024-06-18 | Boe Technology Group Co., Ltd. | Image transmission device and control method thereof, image transmission system and display apparatus |
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1998
- 1998-12-28 KR KR19980059415A patent/KR100281885B1/ko not_active IP Right Cessation
-
1999
- 1999-12-24 CN CN99127055A patent/CN1124030C/zh not_active Expired - Fee Related
- 1999-12-28 US US09/472,869 patent/US7023485B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7023485B1 (en) | 2006-04-04 |
CN1258991A (zh) | 2000-07-05 |
CN1124030C (zh) | 2003-10-08 |
KR20000043102A (ko) | 2000-07-15 |
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