KR100639633B1 - 기호 데이타 스트림 처리 장치 및 그 방법 - Google Patents
기호 데이타 스트림 처리 장치 및 그 방법 Download PDFInfo
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- KR100639633B1 KR100639633B1 KR1020000038642A KR20000038642A KR100639633B1 KR 100639633 B1 KR100639633 B1 KR 100639633B1 KR 1020000038642 A KR1020000038642 A KR 1020000038642A KR 20000038642 A KR20000038642 A KR 20000038642A KR 100639633 B1 KR100639633 B1 KR 100639633B1
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- 238000011084 recovery Methods 0.000 title claims abstract description 48
- 238000005070 sampling Methods 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 15
- 230000004044 response Effects 0.000 claims description 13
- 238000012546 transfer Methods 0.000 claims description 5
- 230000003044 adaptive effect Effects 0.000 abstract description 7
- 230000008569 process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/015—High-definition television systems
-
- 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
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/091—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
-
- 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
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/101—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop
- H03L7/102—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop the additional signal being directly applied to the controlled loop oscillator
-
- 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
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/101—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop
- H03L7/102—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop the additional signal being directly applied to the controlled loop oscillator
- H03L7/103—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using an additional control signal to the controlled loop oscillator derived from a signal generated in the loop the additional signal being directly applied to the controlled loop oscillator the additional signal being a digital signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/06—Demodulator circuits; Receiver circuits
- H04L27/066—Carrier recovery circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
- H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
- H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/06—Phase locked loops with a controlled oscillator having at least two frequency control terminals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03598—Algorithms
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03592—Adaptation methods
- H04L2025/03726—Switching between algorithms
- H04L2025/03732—Switching between algorithms according to the convergence state
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0036—Correction of carrier offset using a recovered symbol clock
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0038—Correction of carrier offset using an equaliser
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0083—Signalling arrangements
- H04L2027/0087—Out-of-band signals, (e.g. pilots)
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Power Engineering (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Television Systems (AREA)
Abstract
Description
Claims (6)
- 기호 데이타 스트림을 처리하는 장치에 있어서,상기 데이타 스트림을 디지탈 신호로 변환하는 아날로그-디지탈 변환기(19)와,상기 변환기의 클럭 입력부에 연결된 타이밍 신호원(336)과,상기 변환기로부터의 상기 디지탈 신호에 응답하여 상기 타이밍 신호원에 주파수 제어 신호를 공급하기 위한 기호 타이밍 복구 네트워크(310,318-330)와,상기 디지탈 신호에 응답하여, 상기 타이밍 신호원의 동작 주파수 범위 편이용 부가 제어 신호를 공급하기 위한 타이밍 제어 네트워크(340,344,348)를 포함하는 것을 특징으로 하는 기호 데이타 스트림 처리 장치.
- 제1항에 있어서,상기 타이밍 신호원은 가변 주파수 오실레이터이고,상기 타이밍 제어 네트워크는 위상 검출기를 포함하고,상기 타이밍 신호는 상기 변환기용 샘플 클럭이고,상기 부가 제어 신호는 상기 오실레이터의 주파수 대 제어신호 전달 함수를 편이시키는 것을 특징으로 하는 기호 데이타 스트림 처리 장치.
- 제1항에 있어서,상기 데이타 스트림은 다중레벨 기호 배열로 표시된 고화질 비디오 데이타를 포함하는 잔류 측파대(VSB : Vestigial Sideband) 변조 신호를 포함하고, 상기 데이타는 관련된 세그먼트 동기 성분을 갖는 복수의 데이타 세그먼트로 시작하는 필드 동기 성분을 포함하는 연속 데이타 프레임으로 구성되는 데이타 프레임 포맷을 포함하고,상기 장치는 상기 변환기로부터의 상기 디지탈 신호에 응답하여 복구 세그먼트 동기 성분을 제공하기 위한 세그먼트 동기 복구 네트워크를 더 포함하고,상기 부가 제어 신호는 상기 복구 세그먼트 동기 성분의 함수로서 발생되는 것을 특징으로 하는 기호 데이타 스트림 처리 장치.
- 기호 데이타 스트림을 처리하는 방법에 있어서,샘플링 클럭을 발생시키는 단계와,상기 샘플링 클럭에 응답하여 상기 데이타 스트림을 샘플링하는 단계와,상기 샘플링 클럭의 주파수를 제어하기 위한 제1 제어 신호를 발생시키는 단계와,상기 샘플링 클럭의 동작 주파수 범위를 편이시키기 위한 제2 제어 신호를 발생시키는 단계를 포함하는 것을 특징으로 하는 기호 데이타 스트림 처리 방법.
- 제4항에 있어서, 상기 제1 제어 신호를 발생시키는 단계는 상기 데이타 스트림으로부터 타이밍 정보를 복구하는 단계를 포함하는 것을 특징으로 하는 기호 데이타 스트림 처리 방법.
- 제4항에 있어서,상기 데이타 스트림은 잔류 측파대(VSB) 기호 배열로 표시된 고화질 비디오 데이타를 포함하는 다중 레벨 잔류 측파대(VSB : Vestigial Sideband) 변조 신호를 포함하고, 상기 데이타는 관련된 세그먼트 동기 성분을 갖는 복수의 데이타 세그먼트로 시작하는 필드 동기 성분을 포함하는 연속 데이타 프레임으로 구성되는 데이타 프레임 포맷을 포함하고, 상기 방법은,상기 세그먼트 동기 성분을 복구하는 단계와,상기 검출 단계에 의해 발생된 상기 동기 성분의 상태 함수로서 상기 제2 제어 신호를 발생시키는 단계를 더 포함하는 것을 특징로 하는 기호 데이타 스트림 처리 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/351,065 | 1999-07-09 | ||
US9/351,065 | 1999-07-09 | ||
US09/351,065 US6445423B1 (en) | 1999-07-09 | 1999-07-09 | Controlled oscillator in a digital symbol timing recovery network |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20010049730A KR20010049730A (ko) | 2001-06-15 |
KR100639633B1 true KR100639633B1 (ko) | 2006-10-31 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020000038642A KR100639633B1 (ko) | 1999-07-09 | 2000-07-06 | 기호 데이타 스트림 처리 장치 및 그 방법 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6445423B1 (ko) |
EP (1) | EP1067785B1 (ko) |
JP (1) | JP4733812B2 (ko) |
KR (1) | KR100639633B1 (ko) |
CN (1) | CN1208961C (ko) |
DE (1) | DE60019032T2 (ko) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6275554B1 (en) * | 1999-07-09 | 2001-08-14 | Thomson Licensing S.A. | Digital symbol timing recovery network |
JP3537738B2 (ja) * | 2000-06-20 | 2004-06-14 | 松下電器産業株式会社 | クロック再生回路 |
KR100396672B1 (ko) * | 2001-09-25 | 2003-09-02 | 엘지전자 주식회사 | 디지털 tv 수신기 |
US7646831B2 (en) * | 2001-10-19 | 2010-01-12 | Nokia Corporation | Method and a device for controlling data extraction from a data stream containing at lease one data packet |
TW543328B (en) * | 2001-12-10 | 2003-07-21 | Silicon Integrated Sys Corp | TV decoder |
KR100442255B1 (ko) * | 2002-02-27 | 2004-07-30 | 엘지전자 주식회사 | 채널 등화 장치 |
KR100613602B1 (ko) * | 2005-02-07 | 2006-08-21 | 삼성전자주식회사 | Vsb 수신기에 적용되는 심벌 타이밍 복원 장치 및 그방법 |
US20060291082A1 (en) * | 2005-06-23 | 2006-12-28 | Steve Bounds | Extending lock-in range of a PLL or DLL |
KR100746087B1 (ko) * | 2006-03-13 | 2007-08-06 | 엘지전자 주식회사 | 디지탈 방송 수신기의 타이밍 복원 장치 및 방법 |
US8331500B2 (en) * | 2009-05-13 | 2012-12-11 | Lg Electronics Inc. | Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system |
US8977188B2 (en) | 2009-10-16 | 2015-03-10 | Quadrac Co., Ltd. | Radio communication system, transmitting apparatus, receiving apparatus, receiving method and transmitting method |
US8666001B2 (en) * | 2011-07-15 | 2014-03-04 | Motorola Solutions, Inc. | Method and apparatus for updating symbol recovery parameters and correcting symbol timing misalignment |
Family Cites Families (15)
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DE3432313A1 (de) * | 1984-09-03 | 1986-03-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zum synchronisieren eines signals |
JP2731722B2 (ja) * | 1994-05-26 | 1998-03-25 | 日本電気株式会社 | クロック周波数自動制御方式及びそれに用いる送信装置と受信装置 |
US5581585A (en) | 1994-10-21 | 1996-12-03 | Level One Communications, Inc. | Phase-locked loop timing recovery circuit |
JP3539793B2 (ja) * | 1995-05-01 | 2004-07-07 | 富士通テン株式会社 | シンボルタイミング再生回路 |
US5796535A (en) * | 1995-05-12 | 1998-08-18 | Cirrus Logic, Inc. | Sampled amplitude read channel employing a user data frequency synthesizer and a servo data frequency synthesizer |
KR0143115B1 (ko) * | 1995-06-09 | 1998-07-15 | 김광호 | 심볼 타이밍 복구회로 및 방법 |
US5872815A (en) | 1996-02-16 | 1999-02-16 | Sarnoff Corporation | Apparatus for generating timing signals for a digital television signal receiver |
US5838738A (en) * | 1996-07-29 | 1998-11-17 | Cirrus Logic, Inc. | Coding to improve timing recovery in a sampled amplitude read channel |
US5892632A (en) | 1996-11-18 | 1999-04-06 | Cirrus Logic, Inc. | Sampled amplitude read channel employing a residue number system FIR filter in an adaptive equalizer and in interpolated timing recovery |
JP2883866B2 (ja) * | 1997-04-21 | 1999-04-19 | 株式会社次世代デジタルテレビジョン放送システム研究所 | Ofdm復調装置 |
US6356598B1 (en) * | 1998-08-26 | 2002-03-12 | Thomson Licensing S.A. | Demodulator for an HDTV receiver |
CN1130899C (zh) * | 1997-10-31 | 2003-12-10 | 汤姆森许可公司 | 处理含高清晰度视频数据残留边带调制信号的装置和方法 |
US6233295B1 (en) * | 1998-08-26 | 2001-05-15 | Thomson Licensing S.A. | Segment sync recovery network for an HDTV receiver |
JP3412558B2 (ja) * | 1999-04-30 | 2003-06-03 | 日本電気株式会社 | クロック周波数制御方法及びこれに用いる受信装置 |
US6275554B1 (en) * | 1999-07-09 | 2001-08-14 | Thomson Licensing S.A. | Digital symbol timing recovery network |
-
1999
- 1999-07-09 US US09/351,065 patent/US6445423B1/en not_active Expired - Lifetime
-
2000
- 2000-07-04 DE DE60019032T patent/DE60019032T2/de not_active Expired - Lifetime
- 2000-07-04 EP EP00114281A patent/EP1067785B1/en not_active Expired - Lifetime
- 2000-07-06 KR KR1020000038642A patent/KR100639633B1/ko active IP Right Grant
- 2000-07-07 JP JP2000206680A patent/JP4733812B2/ja not_active Expired - Lifetime
- 2000-07-10 CN CNB001204602A patent/CN1208961C/zh not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6445423B1 (en) | 2002-09-03 |
DE60019032D1 (de) | 2005-05-04 |
JP2001060939A (ja) | 2001-03-06 |
DE60019032T2 (de) | 2005-09-08 |
JP4733812B2 (ja) | 2011-07-27 |
CN1287448A (zh) | 2001-03-14 |
EP1067785A2 (en) | 2001-01-10 |
CN1208961C (zh) | 2005-06-29 |
KR20010049730A (ko) | 2001-06-15 |
EP1067785B1 (en) | 2005-03-30 |
EP1067785A3 (en) | 2002-06-26 |
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