JP4373118B2 - Hdtvシステムにおける櫛型フィルタを備えた等化器システムおよび方法 - Google Patents
Hdtvシステムにおける櫛型フィルタを備えた等化器システムおよび方法 Download PDFInfo
- Publication number
- JP4373118B2 JP4373118B2 JP2003108529A JP2003108529A JP4373118B2 JP 4373118 B2 JP4373118 B2 JP 4373118B2 JP 2003108529 A JP2003108529 A JP 2003108529A JP 2003108529 A JP2003108529 A JP 2003108529A JP 4373118 B2 JP4373118 B2 JP 4373118B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- filter
- symbol
- value
- video data
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 32
- 238000001914 filtration Methods 0.000 claims description 27
- 230000003044 adaptive effect Effects 0.000 claims description 14
- 230000004044 response Effects 0.000 claims description 14
- 238000012545 processing Methods 0.000 claims description 10
- 238000005311 autocorrelation function Methods 0.000 claims description 6
- 230000002238 attenuated effect Effects 0.000 claims description 2
- 230000002452 interceptive effect Effects 0.000 claims 2
- 230000007423 decrease Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 238000011045 prefiltration Methods 0.000 description 8
- 238000004422 calculation algorithm Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 6
- 238000012549 training Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 238000012887 quadratic function Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Images
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
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
- H04N5/211—Ghost signal cancellation
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Filters That Use Time-Delay Elements (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Picture Signal Circuits (AREA)
- Processing Of Color Television Signals (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Color Television Systems (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37291402P | 2002-04-16 | 2002-04-16 | |
| US10/388,679 US7092036B2 (en) | 2002-04-16 | 2003-03-14 | Equalizer system including a comb filter in an HDTV system |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2004007577A JP2004007577A (ja) | 2004-01-08 |
| JP2004007577A5 JP2004007577A5 (enExample) | 2006-05-18 |
| JP4373118B2 true JP4373118B2 (ja) | 2009-11-25 |
Family
ID=28794504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2003108529A Expired - Fee Related JP4373118B2 (ja) | 2002-04-16 | 2003-04-14 | Hdtvシステムにおける櫛型フィルタを備えた等化器システムおよび方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7092036B2 (enExample) |
| JP (1) | JP4373118B2 (enExample) |
| KR (1) | KR100982898B1 (enExample) |
| CN (1) | CN100367790C (enExample) |
| MX (1) | MXPA03003249A (enExample) |
| MY (1) | MY134400A (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7248849B1 (en) * | 2003-06-03 | 2007-07-24 | Texas Instruments Incorporated | Frequency domain training of prefilters for receivers |
| US7801248B2 (en) * | 2004-11-19 | 2010-09-21 | Qualcomm Incorporated | Interference suppression with virtual antennas |
| US7463679B2 (en) * | 2005-06-27 | 2008-12-09 | Intel Corporation | Equalizer mode selection based on distribution of symbol error |
| US20130142520A1 (en) * | 2008-06-30 | 2013-06-06 | Chuan Xie | Anti-causal pre-emphasis for high speed optical transmission |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5331416A (en) * | 1992-12-02 | 1994-07-19 | Samsung Electronics Co., Ltd. | Methods for operating ghost-cancelation circuitry for TV receiver or video recorder |
| KR960012019B1 (ko) * | 1993-11-18 | 1996-09-09 | 엘지전자 주식회사 | 에이치디티브이(hdtv)의 채널등화기 |
| US5602602A (en) * | 1994-02-10 | 1997-02-11 | Philips Electronics North America Corporation | Method and apparatus for combating co-channel NTSC interference for digital TV transmission having a simplified rejection filter |
| US5452015A (en) * | 1994-02-10 | 1995-09-19 | Philips Electronics North America Corporation | Method and apparatus for combating co-channel NTSC interference for digital TV transmission |
| US5572262A (en) * | 1994-12-29 | 1996-11-05 | Philips Electronics North America Corporation | Receiver based methods and devices for combating co-channel NTSC interference in digital transmission |
| US6084642A (en) * | 1996-10-07 | 2000-07-04 | Zenith Electronics Corporation | Receiver for adjusting sync levels in VSB systems |
| KR100219636B1 (ko) * | 1997-03-25 | 1999-09-01 | 윤종용 | 레벨 변화를 일으키지 않는 ntsc 제거필터의 설계방법과 이를 채용한 수신기 |
| US6011814A (en) | 1997-09-30 | 2000-01-04 | Paradyne Corporation | Adaptive comb filter and decision feedback equalizer for noise suppression |
| US6222592B1 (en) * | 1998-01-13 | 2001-04-24 | Samsung Electronics Co., Ltd. | TV receiver equalizer storing channel characterizations for each TV channel between times of reception therefrom |
| US6118495A (en) * | 1998-01-13 | 2000-09-12 | Samsung Electronics Co., Ltd. | Training signal in plural PN sequences near beginnings of data segments of DTV signal or scan lines of NTSC signal |
| US6384858B1 (en) * | 1998-08-24 | 2002-05-07 | Samsung Electronics Co., Ltd. | Suppression of co-channel NTSC interference artifacts when extracting training signal for a DTV receiver equalizer |
| US6826242B2 (en) * | 2001-01-16 | 2004-11-30 | Broadcom Corporation | Method for whitening colored noise in a communication system |
| KR100674423B1 (ko) * | 2001-01-19 | 2007-01-29 | 엘지전자 주식회사 | 송/수신 시스템 및 데이터 처리 방법 |
-
2003
- 2003-03-14 US US10/388,679 patent/US7092036B2/en not_active Expired - Fee Related
- 2003-04-11 MX MXPA03003249A patent/MXPA03003249A/es active IP Right Grant
- 2003-04-14 JP JP2003108529A patent/JP4373118B2/ja not_active Expired - Fee Related
- 2003-04-14 MY MYPI20031386A patent/MY134400A/en unknown
- 2003-04-15 CN CNB031524559A patent/CN100367790C/zh not_active Expired - Fee Related
- 2003-04-15 KR KR1020030023783A patent/KR100982898B1/ko not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| MXPA03003249A (es) | 2004-10-29 |
| CN1481162A (zh) | 2004-03-10 |
| KR20030082443A (ko) | 2003-10-22 |
| JP2004007577A (ja) | 2004-01-08 |
| US7092036B2 (en) | 2006-08-15 |
| MY134400A (en) | 2007-12-31 |
| CN100367790C (zh) | 2008-02-06 |
| US20030193617A1 (en) | 2003-10-16 |
| KR100982898B1 (ko) | 2010-09-20 |
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