JPH11502388A - デジタルテレビジョン信号における同一チャネル干渉の検出 - Google Patents
デジタルテレビジョン信号における同一チャネル干渉の検出Info
- Publication number
- JPH11502388A JPH11502388A JP9501014A JP50101497A JPH11502388A JP H11502388 A JPH11502388 A JP H11502388A JP 9501014 A JP9501014 A JP 9501014A JP 50101497 A JP50101497 A JP 50101497A JP H11502388 A JPH11502388 A JP H11502388A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- receiver
- field
- atv
- ntsc
- 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
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
- H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0059—Convolutional codes
- H04L1/006—Trellis-coded modulation
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
- Picture Signal Circuits (AREA)
- Color Television Systems (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. 同一チャネル干渉およびその他の干渉の領域内に複数の多重レベル記号 を備え、かつ繰り返しフィールド同期信号を有するデジタル符号化した進歩した テレビジョン(ATV)信号を受信するための受像機であって、この受像機は、 前記フィールド同期信号の対応する部分を組合わせて差し引き信号を発生するた めの手段と、前記差し引き信号を処理して前記同一チャネル干渉を減少するため の手段と、前記差し引き信号を、処理された差し引き信号と比較するための比較 手段と、前記受信したATV信号を選択的に処理し、かつ前記比較手段に応答し て前記同一チャネル干渉を減少するための手段とを備えるデジタル符号化した進 歩したテレビジョン(ATV)信号を受信するための受像機。 2. 請求の範囲1記載の受像機であって、前記組合わせ手段はフィールド櫛 を備える受像機。 3. 請求の範囲1または2記載の受像機であって、前記同一チャネル干渉は アメリカテレビジョン方式委員会(NTSC)信号に関連するものであり、前記 受像機は、前記比較手段に応答して選択的に動作し、前記受信したATV信号を 処理する櫛形フィルタを含む受像機。 4. 請求の範囲3記載の受像機であって、前記ATV信号は前記NTSC信 号の画像搬送波に関してずれた搬送波を有し、前記ずれは前記櫛形フィルタの出 力端子における前記NTSC同一チャネル干渉を強める受像機。 5. 請求の範囲1または2記載の受像機であって、前記比較手段は前記差し 引き信号と処理された差し引き信号との対応する部分を比較する受像機。 6. 請求の範囲1または2記載の受像機であって、前記比較手段は、フィー ルドごとに変化することがある記号から不変の記号により分離されるフィールド 同期信号の対応する部分を比較する受像機。 7. 請求の範囲6記載の受像機であって、前記フィールド同期信号は511 の記号列と、それに続く少なくとも1つのより短い記号列とを含み、前記フィー ルド同期信号の対応する部分は前記511の記号列の終り近くに一連の記号を備 える受像機。 8. 請求の範囲6記載の受像機であって、前記フィールド同期信号は第1の 比較的長い記号列と、それに続く少なくとも1つの比較的短い記号列とを含み、 前記フィールド同期信号の対応する部分は前記比較的長い記号列の終り近くに一 連の記号を備える受像機。 9. 同一チャネル干渉およびその他の干渉の領域内に複数の多重レベル記号 を備え、かつ繰り返しフィールド同期信号を有するデジタル符号化した進歩した テレビジョン(ATV)信号を受信するための方法であって、この方法は、前記 フィールド同期信号の引き続く信号の対応する部分を組合わせて差し引き信号を 発生する過程と、前記差し引き信号を処理して前記同一チャネル干渉を減少する 過程と、差し引き信号を処理された差し引き信号と比較する過程と、受信したA TV信号を選択的に処理し、その比較を基にして同一チャネル干渉を減少する過 程とを備えるデジタル符号化した進歩したテレビジョン(ATV)信号を受信す るための方法。 10. 請求の範囲9記載の方法であって、前記フィールド同期信号の組合わ せは、ATVをフィールド組合わせて差し引き信号を発生する過程を備える方法 。 11. 請求の範囲9または10記載の方法であって、前記同一チャネル干渉 はアメリカテレビジョン方式委員会(NTSC)信号に関連するものであり、前 記受信したATV信号の処理はATV信号を櫛形濾波する過程を備える方法。 12. 請求の範囲9または10記載の方法であって、NTSC同一チャネル 干渉を強めるために、ATV信号の搬送波はNTSC信号の画像搬送波に関して ずれている方法。 13. 請求の範囲9または10記載の方法であって、比較過程は、フィール ドごとに変化することがある記号から不変の記号により分離されるフィールド同 期信号の対応する部分に限られる方法。 14. 請求の範囲13記載の方法であって、前記フィールド同期信号は51 1の記号列を含み、対応する部分は前記511の記号列の終り近く、好ましくは 、前記511の記号の第2の半分に一連の記号を備える方法。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/475,713 | 1995-06-07 | ||
US08/475,713 US5594496A (en) | 1995-06-07 | 1995-06-07 | Detection of co-channel interference in digital television signals |
US475,713 | 1995-06-07 | ||
PCT/US1996/008402 WO1996041466A1 (en) | 1995-06-07 | 1996-06-03 | Detection of co-channel interference in digital television signals |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11502388A true JPH11502388A (ja) | 1999-02-23 |
JP3264935B2 JP3264935B2 (ja) | 2002-03-11 |
Family
ID=23888795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50101497A Expired - Lifetime JP3264935B2 (ja) | 1995-06-07 | 1996-06-03 | デジタルテレビジョン信号における同一チャネル干渉の検出 |
Country Status (9)
Country | Link |
---|---|
US (1) | US5594496A (ja) |
JP (1) | JP3264935B2 (ja) |
KR (1) | KR100270893B1 (ja) |
CN (1) | CN1080969C (ja) |
BR (1) | BR9608556A (ja) |
CA (1) | CA2221317C (ja) |
HK (1) | HK1009908A1 (ja) |
TW (1) | TW298703B (ja) |
WO (1) | WO1996041466A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005328538A (ja) * | 2004-05-14 | 2005-11-24 | Samsung Electronics Co Ltd | デジタルテレビ受信機でのチャンネル状態の評価方法及びチャンネル状態の生成回路 |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
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KR0172885B1 (ko) * | 1995-08-25 | 1999-03-20 | 구자홍 | 에이치디티브이용 통합 트렐리스 디코더 |
US5914988A (en) * | 1996-04-09 | 1999-06-22 | Thomson Multimedia S.A. | Digital packet data trellis decoder |
US5828404A (en) * | 1996-06-10 | 1998-10-27 | Zenith Electronics Corporation | VSB mode detection system with comb filter |
US5798803A (en) * | 1996-10-02 | 1998-08-25 | Samsung Electronics Co., Ltd. | NTSC interference detectors using comb filters that suppress HDTV pilot carrier for NTSC extraction |
US6023306A (en) * | 1996-10-02 | 2000-02-08 | Samsung Electronics Co. Ltd. | NTSC interference detectors using comb filters that suppress digital TV pilot carrier for NTSC extraction |
US5787129A (en) * | 1996-10-11 | 1998-07-28 | Zenith Electronics Corporation | Decoder for a trellis encoded signal corrupted by NTSC co-channel interference and white noise |
CA2220740C (en) * | 1996-11-12 | 2002-03-19 | Samsung Electronics Co., Ltd. | Symbol decoding apparatus with plural data slicers and an adaptive ntsc co-channel interference filter |
US5835131A (en) * | 1997-04-15 | 1998-11-10 | Samsung Electronics Co., Ltd. | Digital television receiver with adaptive filter circuitry for suppressing NTSC co-channel interference |
US5923378A (en) * | 1997-03-21 | 1999-07-13 | Samsung Electronics Co., Ltd. | Using intercarrier signals for detecting NTSC interference in digital TV receivers |
US5801759A (en) * | 1997-04-15 | 1998-09-01 | Samsung Electronics Co., Ltd. | Digital TV receiver circuitry for detecting and suppressing NTSC co-channel interference |
KR100234319B1 (ko) * | 1997-05-02 | 1999-12-15 | 윤종용 | 동일채널 간섭 검출기와 그 구동방법 |
KR100219643B1 (ko) * | 1997-06-26 | 1999-09-01 | 윤종용 | 동일채널 간섭 검출기와 그 구동방법 |
KR100247967B1 (ko) * | 1997-07-09 | 2000-03-15 | 윤종용 | 동일채널간섭검출기와그방법 |
KR100238301B1 (ko) * | 1997-07-10 | 2000-01-15 | 윤종용 | 동일채널 간섭 검출기와 그 방법 |
KR100238311B1 (ko) * | 1997-08-04 | 2000-01-15 | 윤종용 | 시뮬캐스트 수신기의 동일채널 간섭 제거기와 그 방법 |
CA2247555C (en) * | 1997-09-19 | 2001-12-11 | Samsung Electronics Co., Ltd. | Ntsc interference detectors using comb filters that suppress dtv pilot carrier to extract ntsc artifacts |
US6201564B1 (en) * | 1997-09-19 | 2001-03-13 | Samsung Electronics Co., Ltd. | Method of operating the channel equalizer in a receiver for DTV signals subject to co-channel NTSC interference |
US6697098B1 (en) | 1998-08-26 | 2004-02-24 | Thomson Licensing S.A. | Co-channel interference detection network for an HDTV receiver |
KR100248014B1 (ko) * | 1997-12-31 | 2000-03-15 | 윤종용 | Tcm 복호기 및 그 복호방법 |
KR100309098B1 (ko) * | 1998-05-07 | 2001-11-15 | 윤종용 | 기준신호를갖는변복조방식디지털통신시스템수신장치에서의신호처리방법및장치와동일채널간섭신호제거를위한방법및장치 |
WO1999059331A1 (en) * | 1998-05-12 | 1999-11-18 | Samsung Electronics Company, Ltd. | Dtv signal with gcr components in plural-data-segment frame headers and receiver apparatus for such signal |
US6201576B1 (en) | 1998-06-26 | 2001-03-13 | Lucent Technologies Inc. | Apparatus and method for detecting an NTSC signal in an HDTV transmission signal |
KR100304889B1 (ko) * | 1998-12-31 | 2001-09-24 | 구자홍 | 디지털텔레비전의잔류측파대모드검출장치 |
US6493402B1 (en) * | 1999-05-27 | 2002-12-10 | Zenith Electronics Corporation | Mode control for trellis decoder |
KR100398449B1 (ko) * | 2001-12-24 | 2003-09-19 | 한국전자통신연구원 | 블라인드 판정 궤환 등화 장치 및 그 방법 |
KR100446304B1 (ko) * | 2002-08-16 | 2004-08-31 | 삼성전자주식회사 | 고화질 텔레비전에 사용되는 등화기 및 등화 방법 |
WO2005101844A2 (en) * | 2004-04-12 | 2005-10-27 | The Directv Group, Inc. | Physical layer header scrambling in satellite broadcast systems |
TWI279130B (en) * | 2004-07-06 | 2007-04-11 | Realtek Semiconductor Corp | Interference detecting circuit for use in ATSC system and method thereof |
US7369155B2 (en) * | 2005-05-16 | 2008-05-06 | Mediatek Incorporation | Apparatus and method for rejecting co-channel interference signal |
US20070064156A1 (en) * | 2005-09-19 | 2007-03-22 | Mediatek Inc. | System and method for removing co-channel interference |
US7957490B2 (en) * | 2006-09-21 | 2011-06-07 | Limberg Allen Leroy | Insertion of repetitive PN sequences into DTV data fields |
CN100505831C (zh) * | 2007-07-27 | 2009-06-24 | 北京创毅视讯科技有限公司 | 一种同频干扰滤波方法及同频干扰滤波器 |
US9210006B2 (en) * | 2012-07-09 | 2015-12-08 | Intel Deutschland Gmbh | Method for processing a data signal and receiver circuit |
Family Cites Families (3)
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US5040063A (en) * | 1988-04-04 | 1991-08-13 | Zenith Electronics Corporation | TV signal transmission systems and methods |
US5086340A (en) * | 1990-10-19 | 1992-02-04 | Zenith Electronics Corporation | Co-channel interference reduction system for digital high definition television |
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 |
-
1995
- 1995-06-07 US US08/475,713 patent/US5594496A/en not_active Expired - Lifetime
-
1996
- 1996-06-03 JP JP50101497A patent/JP3264935B2/ja not_active Expired - Lifetime
- 1996-06-03 CA CA002221317A patent/CA2221317C/en not_active Expired - Lifetime
- 1996-06-03 BR BR9608556A patent/BR9608556A/pt not_active IP Right Cessation
- 1996-06-03 KR KR1019970708568A patent/KR100270893B1/ko not_active IP Right Cessation
- 1996-06-03 WO PCT/US1996/008402 patent/WO1996041466A1/en active IP Right Grant
- 1996-06-03 CN CN96194652A patent/CN1080969C/zh not_active Expired - Fee Related
- 1996-06-17 TW TW085107280A patent/TW298703B/zh not_active IP Right Cessation
-
1998
- 1998-09-24 HK HK98110909A patent/HK1009908A1/xx not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005328538A (ja) * | 2004-05-14 | 2005-11-24 | Samsung Electronics Co Ltd | デジタルテレビ受信機でのチャンネル状態の評価方法及びチャンネル状態の生成回路 |
JP4654067B2 (ja) * | 2004-05-14 | 2011-03-16 | 三星電子株式会社 | デジタルテレビ受信機でのチャンネル状態の評価方法及びチャンネル状態の生成回路 |
Also Published As
Publication number | Publication date |
---|---|
KR100270893B1 (ko) | 2000-11-01 |
TW298703B (ja) | 1997-02-21 |
WO1996041466A1 (en) | 1996-12-19 |
US5594496A (en) | 1997-01-14 |
HK1009908A1 (en) | 1999-10-08 |
CN1080969C (zh) | 2002-03-13 |
CA2221317C (en) | 2001-07-31 |
JP3264935B2 (ja) | 2002-03-11 |
CA2221317A1 (en) | 1996-12-19 |
MX9709204A (es) | 1998-07-31 |
KR19990022089A (ko) | 1999-03-25 |
BR9608556A (pt) | 1999-07-06 |
CN1187276A (zh) | 1998-07-08 |
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