CA2331831A1 - Dtv signal with gcr components in plural-data-segment frame headers and receiver apparatus for such signal - Google Patents
Dtv signal with gcr components in plural-data-segment frame headers and receiver apparatus for such signal Download PDFInfo
- Publication number
- CA2331831A1 CA2331831A1 CA002331831A CA2331831A CA2331831A1 CA 2331831 A1 CA2331831 A1 CA 2331831A1 CA 002331831 A CA002331831 A CA 002331831A CA 2331831 A CA2331831 A CA 2331831A CA 2331831 A1 CA2331831 A1 CA 2331831A1
- Authority
- CA
- Canada
- Prior art keywords
- signal
- plural
- data
- dtv signal
- segment frame
- 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.)
- Granted
Links
- 230000003111 delayed effect Effects 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 2
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 230000000295 complement effect Effects 0.000 abstract 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Noise Elimination (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
A DTV signal has a plural-data-segment frame header (figures 3A-3D) including complementary first and second ghost-cancellation reference signals (41 and 42) differentially delayed by the duration of two NTSC horizontal scan lines.
A receiver for such DTV signal has an adaptive equalizer (11) for baseband symbol code with kernel weights calculated by a computer (26) operative on the equalizer response after comb filtering. The comb filter (30) combines the equalizer response as differentially delayed by the duration of two NTSC
horizontal scan lines to cancel artifacts of co-channel NTSC interference in the comb filtering equalizer response supplied to the computer (26). This reduces the undesirable influence of such artifacts on equalization to reduce intersymbol interference.
A receiver for such DTV signal has an adaptive equalizer (11) for baseband symbol code with kernel weights calculated by a computer (26) operative on the equalizer response after comb filtering. The comb filter (30) combines the equalizer response as differentially delayed by the duration of two NTSC
horizontal scan lines to cancel artifacts of co-channel NTSC interference in the comb filtering equalizer response supplied to the computer (26). This reduces the undesirable influence of such artifacts on equalization to reduce intersymbol interference.
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8506498P | 1998-05-12 | 1998-05-12 | |
US60/085,064 | 1998-05-12 | ||
US8988298P | 1998-06-19 | 1998-06-19 | |
US60/089,882 | 1998-06-19 | ||
US10347098P | 1998-10-08 | 1998-10-08 | |
US60/103,470 | 1998-10-08 | ||
US12063899P | 1999-02-18 | 1999-02-18 | |
US60/120,638 | 1999-02-18 | ||
PCT/US1999/010290 WO1999059331A1 (en) | 1998-05-12 | 1999-05-11 | Dtv signal with gcr components in plural-data-segment frame headers and receiver apparatus for such signal |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2331831A1 true CA2331831A1 (en) | 1999-11-18 |
CA2331831C CA2331831C (en) | 2003-10-28 |
Family
ID=27491934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002331831A Expired - Fee Related CA2331831C (en) | 1998-05-12 | 1999-05-11 | Dtv signal with gcr components in plural-data-segment frame headers and receiver apparatus for such signal |
Country Status (4)
Country | Link |
---|---|
KR (1) | KR100392681B1 (en) |
AU (1) | AU4074399A (en) |
CA (1) | CA2331831C (en) |
WO (1) | WO1999059331A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6806915B2 (en) * | 2001-05-03 | 2004-10-19 | Koninklijke Philips Electronics N.V. | Method and apparatus for echo cancellation in digital communications using an echo cancellation reference signal |
KR100407976B1 (en) * | 2002-02-28 | 2003-12-01 | 엘지전자 주식회사 | Digital TV receiver |
AU2005318933B2 (en) | 2004-12-21 | 2011-04-14 | Emue Holdings Pty Ltd | Authentication device and/or method |
KR101253186B1 (en) * | 2007-03-26 | 2013-04-10 | 엘지전자 주식회사 | Digital broadcasting system and method of processing data in digital broadcasting system |
KR101276851B1 (en) | 2007-04-06 | 2013-06-18 | 엘지전자 주식회사 | Apparatus and Method for transmitting Digital broadcasting signal |
KR101221914B1 (en) | 2007-04-06 | 2013-01-15 | 엘지전자 주식회사 | Apparatus and method for transmitting Digital broadcasting signal |
KR101556134B1 (en) | 2007-08-24 | 2015-09-30 | 엘지전자 주식회사 | Digital broadcasting receiver and method for controlling the same |
US8116381B2 (en) | 2007-10-22 | 2012-02-14 | Lg Electronics Inc. | Digital broadcasting system and data processing method in digital broadcasting system |
KR20090040861A (en) * | 2007-10-22 | 2009-04-27 | 엘지전자 주식회사 | Digital broadcasting system and method of processing data in digital broadcasting system |
KR100917214B1 (en) * | 2009-01-29 | 2009-09-15 | 엘지전자 주식회사 | Receiving system and method of processing data in receiving system |
KR100917213B1 (en) | 2009-01-29 | 2009-09-15 | 엘지전자 주식회사 | Receiving system and method of processing data in receiving system |
KR100930899B1 (en) * | 2009-01-29 | 2009-12-10 | 엘지전자 주식회사 | Receiving system and data processing method |
CN108736155A (en) * | 2017-04-17 | 2018-11-02 | 东莞百电子有限公司 | A kind of novel high clutter reduction S frequency range tuners |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5598220A (en) * | 1991-07-18 | 1997-01-28 | Zenith Electronics Corporation | Digital signal with multilevel symbols and sync recognition |
TW231393B (en) * | 1992-12-02 | 1994-10-01 | Samsung Electronics Co Ltd | |
US5532755A (en) * | 1994-01-05 | 1996-07-02 | Samsung Electronics Co., Ltd. | Apparatus for suppressing ghosts in signals modulating a carrier in quadrature phasing with a video carrier |
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 |
KR0139157B1 (en) * | 1994-09-07 | 1998-05-15 | 김광호 | Ghost cancelling apparatus using csd coefficient |
US5594496A (en) * | 1995-06-07 | 1997-01-14 | Zenith Electronics Corporation | Detection of co-channel interference in digital television signals |
US5623319A (en) * | 1995-10-05 | 1997-04-22 | Philips Electronics North American Corp. | Ghost cancellation reference signal detection and synchronization circuit |
US5748226A (en) * | 1996-11-12 | 1998-05-05 | Samsung Electronics Co., Ltd. | Digital television receiver with adaptive filter circuitry for suppressing NTSC co-channel interference |
-
1999
- 1999-05-11 CA CA002331831A patent/CA2331831C/en not_active Expired - Fee Related
- 1999-05-11 WO PCT/US1999/010290 patent/WO1999059331A1/en active IP Right Grant
- 1999-05-11 AU AU40743/99A patent/AU4074399A/en not_active Abandoned
- 1999-05-11 KR KR10-2000-7012591A patent/KR100392681B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO1999059331A1 (en) | 1999-11-18 |
KR100392681B1 (en) | 2003-07-28 |
CA2331831C (en) | 2003-10-28 |
AU4074399A (en) | 1999-11-29 |
KR20010043503A (en) | 2001-05-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20170511 |