JPH07509593A - 信号ビット用スタート符号 - Google Patents
信号ビット用スタート符号Info
- Publication number
- JPH07509593A JPH07509593A JP7500447A JP50044795A JPH07509593A JP H07509593 A JPH07509593 A JP H07509593A JP 7500447 A JP7500447 A JP 7500447A JP 50044795 A JP50044795 A JP 50044795A JP H07509593 A JPH07509593 A JP H07509593A
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- JP
- Japan
- Prior art keywords
- signal
- start code
- bit
- pit
- code
- 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.)
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Classifications
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/081—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division the additional information signals being transmitted by means of a subcarrier
-
- 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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
-
- 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
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/007—Systems with supplementary picture signal insertion during a portion of the active part of a television signal, e.g. during top and bottom lines in a HDTV letter-box system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/025—Systems for the transmission of digital non-picture data, e.g. of text during the active part of a television frame
- H04N7/035—Circuits for the digital non-picture data signal, e.g. for slicing of the data signal, for regeneration of the data-clock signal, for error detection or correction of the data signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
- H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
- H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
- H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
- H04N7/0884—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of additional display-information, e.g. menu for programme or channel selection
- H04N7/0885—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of additional display-information, e.g. menu for programme or channel selection for the transmission of subtitles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N11/00—Colour television systems
- H04N11/06—Transmission systems characterised by the manner in which the individual colour picture signal components are combined
- H04N11/12—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only
- H04N11/14—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system
- H04N11/16—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system
- H04N11/167—Transmission systems characterised by the manner in which the individual colour picture signal components are combined using simultaneous signals only in which one signal, modulated in phase and amplitude, conveys colour information and a second signal conveys brightness information, e.g. NTSC-system the chrominance signal alternating in phase, e.g. PAL-system a resolution-increasing signal being multiplexed to the PAL-system signal, e.g. PAL-PLUS-system
-
- 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
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4884—Data services, e.g. news ticker for displaying subtitles
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/9201—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal
- H04N5/9206—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a character code signal
- H04N5/9208—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving the multiplexing of an additional signal and the video signal the additional signal being a character code signal involving the use of subcodes
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Graphics (AREA)
- Human Computer Interaction (AREA)
- Television Systems (AREA)
- Time-Division Multiplex Systems (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Electrophonic Musical Instruments (AREA)
- Analogue/Digital Conversion (AREA)
- Error Detection And Correction (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.制御情報を搬送する信号ピットを具え、拡張復号器を制御する拡張テレビジ ョン信号であって、この信号ピットはスタート符号およびデータピットを具えス ペクトルエネルギーのスタート符号の主ロープはベースバンドテレビジョン信号 の低いスペクトル区域にあり、この低いスペクトル区域はその最大周波数を2M Hz以下、好適には1.7MHzとし、前記スタート符号は零周波数で振幅ディ ップを有するとともに良好な非周期的相関特性と、スタート符号に続くデータビ ットの方向にシフトされる際データビットに対し所定の最小ビットハミング距離 とを有することを特徴とする拡張テレビジョン信号。 2.前記スタート符号は最大周波数で振幅ディップを有することを特徴とする請 求項1に記載の拡張テレビジョン信号。 3.前記信号ビットはさらに前記スタート符号前の実行信号を有し、前記スター ト符号は実行の方向にシフトされる際実行に対し所定の最小ピットハミング距離 を存することを特徴とする請求項1に記載の拡張テレビジョン信号。 4.前記信号ピットはさらに前記スタート符号前の実行信号を有し、前記スター ト符号は第1の長さのビットシーケンスに基づき前記実行に対する第1の最小ビ ットハミング距離を有し、且つ、前記実行信号の少なくとも一部分と前記スター ト符号との組合せは前記第1の長さ以上の第2の長さのピットシーケンスに基づ き前の実行に対する第2の最小ピットハミング距離を有し、この第2の最小ビッ トハミング距離を前記第1の最小ピットハミング距離よりも長くするようにした ことを特徴とする請求項1に記載の拡張テレビジョン信号。 5.前記スタート符号は前記データビットに対する第3の最小ビットハミング距 離を有し、前の組合せは前記データビットに対する第4の最小ビットハミング距 離を宜し、この第4の最小ピットハミング距離を前記第3の最小ビットハミング 距離よりも長くするようにしたことを特徴とする請求項4に記載の拡張テレビジ ョン信号。 6.前記スタート符号は第1の長さのパーカーシーケンスに基づき、且つ前記信 号ピットは前記スタート符号に先立っ実行を具え、この実行の少なくとも一部分 と前記スタート符号との組合せは前記第1の長さ以上の第2の長さのパーカーシ ーケンスに基づくようにしたことを特徴とする請求項1に記載の拡張テレビジョ ン信号。 7.前記スタート符号は前記データビットの符号変調から変移するように変調さ れた符号のシーケンスを含むことを特徴とする請求項1に記載の拡張テレビジョ ン信号。 8.前記シーケンスは16進表記法で(1E3ClF)としたことを特徴とする 請求項7に記載の拡張テレビジョン信号。 9.前記信号ビットは最終ビットが2進表記法で(000111)となる実行を さらに具えることを特徴とする請求項1に記載の拡張テレビジョン信号。 10.前記信号ビットは少なくとも8つの遷移を有する実行をさらに具えること を特徴とする請求項1に記載の拡張テレビジョン信号。 11.像データ、この像データに関連する処理操作を制御するための制御情報を 搬送する信号ビット、および同期化情報(VCS)を有する拡張テレビジョン信 号(CVBS)を受けるように結合され、前記拡張テレビジョン信号(CVBS )から前記同期化情報(VCS)を取出す手段(1)と、前記同期化情報(VC S)を受けるように結合され前記信号ビット窓を選択する手段(7)と、前記拡 張テレビジョン信号を受けるように結合され前記信号ピット窓中前記信号通報を 復号化する手段(5,11,13)とを具えて成り、前記信号ピットはスタート 符号およびデータビットを具え、スペクトルエネルギーのスタート符号の主ロー ブはベースバンドテレビジョン信号の低いスペクトル区域にあり、この低いスペ クトル区域はその最大周波数を2MHz以下、好適には1.7MHzとし、前記 スタート符号は直流で最小の局部スペクトルを有するとともに良好な非周期的相 関特性と、スタート符号に続くデータピットに向かいまたはデータビット全体に 亘りシフトされる際データビットに対する所定の最小ビットハミング距離とを有 することを特徴とする拡張テレビジョン信号復号器。 12.前記信号ビット復号化手段(5,11,13)は前記最大周波数でカット オフ周波数を有する低域通過フィルタが先行することを特徴とする請求項11に 記載の拡張テレビジョン信号復号器。 13.前記信号ピット復号化手段(5,11,13)は色副搬送波周波数でスペ クトル最小値を有する低域通過フィルタが先行し、インパルス応答は、−200 ns≦t≦1200nsの際単位パルスEP=cos2(π/2*t/(200 ns))の周波数領域表示を近似し、その他の場合にはEP=0とすることを特 徴とする請求項11に記載の拡張テレビジョン信号復号器。 11.前記信号ビット復号化手段(5,11,13)は13.5MHzのサンプ ル速度で[1221]または[234432]インパルス応答を有する低域通過 フィルタが先行することを特徴とする請求項11に記載の拡張テレビジョン信号 復号器。 15.前記信号ビット復号化手段(5,11,13)は少なくとも±4μsのタ イミング公差を有するスタート符号タイミングウインドウ中作動可能なスタート 符号検出器(11)を具えることを特徴とする請求項11に記載の拡張テレビジ ョン信号復号器。 16.前記信号ビットはさらに前記スタート符号が先行する実行を具え、且つ前 記信号ビット復号化手段(5,11,13)は前記スタート符号および前記実行 の少なくとも1部分の組合せを検出するように配列されたスタート符号検出器( 11)を具えることを特徴とする請求項11に記載の拡張テレビジョン信号復号 器。 17.前記信号ビット復号化手段(5,11,13)は16進表記法で(1E3 ClF]であるスタート符号シーケンスを検出するように配列されたスタート符 号検出器(11)を具えることを特徴とする請求項11に記載の拡張テレビジョ ン信号復号器。 18.前記信号ピット復号化手段(5,11,13)は、第1の複数のビットが 正しく受信されたかどうかを決める手段(57)および第2の複数のピットのう ちの少なくとも所定数がエラーでないかどうかを決める手段(63,65)を含 むスタート符号検出器(11)を具えることを特徴とする請求項11に記載の拡 張テレビジョンは号復号器。 19.前記スタート符号検出器(11)は、前記第2の複数のピットがピット対 のうちの双方のピットの反転となる遷移を中心とするビット対を含むかどうかを 決める手段(59,61)をさらに具えることを特徴とする請求項11に記載の 拡張テレビジョン信号復号器。 20.拡張テレビジョン信号を復号化するに当たり、像データ、この像データに 関連する処理操作を制御するための制御情報を搬送する信号ビット、および同期 化情報(VCS)を有する拡張テレビジョン信号(CVBS)を受けて、前記拡 張テレビジョン信号(CVBS)から前記同期化情報(VCS)を取出す工程( 1)と、前記同期化情報(VCS)に依存して前記信号ビット窓を選択する工程 (7)と、前記拡張テレビジョン信号に応答して前記信号ビット窓中前記信号通 報を復号化する工程(5,11,13)とを具え、前記信号ピットはスタート符 号およびデータビットを具え、スペクトルエネルギーのスタート符号の主ローブ はベースバンドテレビジョン信号の低いスペクトル区域にあり、この低いスペク トル区域はその最大周波数を2MH2以下好適には1.7MHzとし、前記スタ ート符号は直流で最小の局部スペクトルを有するとともに良好な非周期的相関特 性と、スタート符号に続くデータピットに向かいまたはデータビット全体に亘り シフトされる際データビットに対する所定の量小ビットハミング距離とを有する ことを特徴とする拡張テレビジョン信号復号化方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93201514 | 1993-05-26 | ||
EP93201514.2 | 1993-05-26 | ||
PCT/IB1994/000125 WO1994028678A1 (en) | 1993-05-26 | 1994-05-26 | Start code for signalling bits |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07509593A true JPH07509593A (ja) | 1995-10-19 |
JP3817260B2 JP3817260B2 (ja) | 2006-09-06 |
Family
ID=8213850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50044795A Expired - Lifetime JP3817260B2 (ja) | 1993-05-26 | 1994-05-26 | 信号ビット用スタート符号 |
Country Status (20)
Country | Link |
---|---|
EP (1) | EP0714581B1 (ja) |
JP (1) | JP3817260B2 (ja) |
KR (1) | KR100323924B1 (ja) |
CN (1) | CN1048611C (ja) |
AT (1) | ATE186809T1 (ja) |
AU (1) | AU673436B2 (ja) |
BR (1) | BR9405377A (ja) |
CA (1) | CA2140771C (ja) |
CZ (1) | CZ286733B6 (ja) |
DE (1) | DE69421708T2 (ja) |
ES (1) | ES2139743T3 (ja) |
FI (1) | FI113134B (ja) |
HU (1) | HU223983B1 (ja) |
NO (1) | NO313360B1 (ja) |
NZ (1) | NZ266012A (ja) |
PL (1) | PL173671B1 (ja) |
PT (1) | PT714581E (ja) |
SG (1) | SG48304A1 (ja) |
SK (1) | SK9995A3 (ja) |
WO (1) | WO1994028678A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2180023A1 (en) * | 1994-10-28 | 1996-05-09 | Johannes Yzebrand Tichelaar | Decoding of a data signal transmitted in a television system |
DE19539069A1 (de) * | 1995-10-20 | 1997-04-24 | Thomson Multimedia Sa | Verfahren und Vorrichtung zur Erzeugung des Decodierungs-Taktes von digitalen Datenelementen |
KR20000065136A (ko) * | 1996-05-01 | 2000-11-06 | 요트.게.아. 롤페즈 | 부가데이터를포함하는텔레비전신호 |
EP1286546A1 (en) * | 2001-08-02 | 2003-02-26 | Pace Micro Technology PLC | Television system allowing teletext windows repositioning |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8911493D0 (en) * | 1989-05-18 | 1989-07-05 | Indep Broadcasting Authority | Data transmission in the active picture period |
EP0505659B1 (en) * | 1991-02-28 | 1996-06-12 | Rai Radiotelevisione Italiana | A method of message transmission over a television channel within the teletext system |
KR100254953B1 (ko) * | 1991-12-13 | 2000-05-01 | 요트.게.아. 롤페즈 | 확장된 텔레비젼 신호의 디코딩 장치 및 부수신호 인코딩 방법 |
-
1994
- 1994-05-26 SG SG1996008777A patent/SG48304A1/en unknown
- 1994-05-26 HU HU9500200A patent/HU223983B1/hu active IP Right Grant
- 1994-05-26 ES ES94915250T patent/ES2139743T3/es not_active Expired - Lifetime
- 1994-05-26 AT AT94915250T patent/ATE186809T1/de active
- 1994-05-26 BR BR9405377-4A patent/BR9405377A/pt not_active IP Right Cessation
- 1994-05-26 DE DE69421708T patent/DE69421708T2/de not_active Expired - Lifetime
- 1994-05-26 NZ NZ266012A patent/NZ266012A/en not_active IP Right Cessation
- 1994-05-26 PL PL94307241A patent/PL173671B1/pl unknown
- 1994-05-26 CZ CZ1995186A patent/CZ286733B6/cs not_active IP Right Cessation
- 1994-05-26 CN CN94190398A patent/CN1048611C/zh not_active Expired - Lifetime
- 1994-05-26 CA CA2140771A patent/CA2140771C/en not_active Expired - Lifetime
- 1994-05-26 EP EP94915250A patent/EP0714581B1/en not_active Expired - Lifetime
- 1994-05-26 SK SK99-95A patent/SK9995A3/sk unknown
- 1994-05-26 AU AU66570/94A patent/AU673436B2/en not_active Expired
- 1994-05-26 JP JP50044795A patent/JP3817260B2/ja not_active Expired - Lifetime
- 1994-05-26 KR KR1019950700303A patent/KR100323924B1/ko not_active IP Right Cessation
- 1994-05-26 PT PT94915250T patent/PT714581E/pt unknown
- 1994-05-26 WO PCT/IB1994/000125 patent/WO1994028678A1/en active IP Right Grant
-
1995
- 1995-01-24 NO NO19950262A patent/NO313360B1/no not_active IP Right Cessation
- 1995-01-25 FI FI950322A patent/FI113134B/fi not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI950322A0 (fi) | 1995-01-25 |
ES2139743T3 (es) | 2000-02-16 |
WO1994028678A1 (en) | 1994-12-08 |
AU6657094A (en) | 1994-12-20 |
HU223983B1 (hu) | 2005-04-28 |
DE69421708D1 (de) | 1999-12-23 |
EP0714581A1 (en) | 1996-06-05 |
FI113134B (fi) | 2004-02-27 |
HUT73120A (en) | 1996-06-28 |
FI950322A (fi) | 1995-01-25 |
ATE186809T1 (de) | 1999-12-15 |
AU673436B2 (en) | 1996-11-07 |
BR9405377A (pt) | 1999-09-08 |
CA2140771C (en) | 2010-09-21 |
DE69421708T2 (de) | 2000-06-21 |
SG48304A1 (en) | 1998-04-17 |
KR950702777A (ko) | 1995-07-29 |
HU9500200D0 (en) | 1995-03-28 |
SK9995A3 (en) | 1995-08-09 |
CZ286733B6 (en) | 2000-06-14 |
NO950262L (no) | 1995-03-16 |
PL173671B1 (pl) | 1998-04-30 |
EP0714581B1 (en) | 1999-11-17 |
NO950262D0 (no) | 1995-01-24 |
JP3817260B2 (ja) | 2006-09-06 |
CN1048611C (zh) | 2000-01-19 |
CZ18695A3 (en) | 1997-03-12 |
PT714581E (pt) | 2000-04-28 |
NZ266012A (en) | 1996-06-25 |
KR100323924B1 (ko) | 2002-06-20 |
PL307241A1 (en) | 1995-05-15 |
NO313360B1 (no) | 2002-09-16 |
CN1111080A (zh) | 1995-11-01 |
CA2140771A1 (en) | 1994-12-08 |
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