WO2008146454A1 - 文字放送受信回路 - Google Patents
文字放送受信回路 Download PDFInfo
- Publication number
- WO2008146454A1 WO2008146454A1 PCT/JP2008/001203 JP2008001203W WO2008146454A1 WO 2008146454 A1 WO2008146454 A1 WO 2008146454A1 JP 2008001203 W JP2008001203 W JP 2008001203W WO 2008146454 A1 WO2008146454 A1 WO 2008146454A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- circuit
- signal
- teletext broadcast
- frequency characteristic
- output
- Prior art date
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Systems (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
コンポジット信号をデジタル化したデジタル入力信号から、文字放送基準信号の周波数成分を抜き取るバンドパスフィルタ(131)を、周波数特性向上回路(130)に設ける。周波数特性向上回路(130)の出力の、文字放送基準信号の期間における最大値と最小値、及び現在の水平同期区間から次の水平同期区間における最大値と最小値に基づいてコンポジット信号の状態を判別する判別回路(145)を、スライス回路(140)に設ける。そして、周波数特性向上回路(130)によって、判別回路(145)の判別結果に応じて選択した、バンドパスフィルタ(131)の出力、及びデジタル入力信号の何れかに基づいてスライス回路(140)へ出力する信号を生成する。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/307,683 US20090237558A1 (en) | 2007-05-28 | 2008-05-14 | Teletext receiving circuit |
JP2008541529A JP4902886B2 (ja) | 2007-05-28 | 2008-05-14 | 文字放送受信回路および文字放送受信方法 |
EP08751721A EP2046030A1 (en) | 2007-05-28 | 2008-05-14 | Teletext broadcast transmission/reception circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007-140887 | 2007-05-28 | ||
JP2007140887 | 2007-05-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008146454A1 true WO2008146454A1 (ja) | 2008-12-04 |
Family
ID=40074732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/001203 WO2008146454A1 (ja) | 2007-05-28 | 2008-05-14 | 文字放送受信回路 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20090237558A1 (ja) |
EP (1) | EP2046030A1 (ja) |
JP (1) | JP4902886B2 (ja) |
WO (1) | WO2008146454A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8864945B2 (en) | 2009-01-28 | 2014-10-21 | Georgia-Pacific Consumer Products Lp | Method of making a multi-ply wiper/towel product with cellulosic microfibers |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09182041A (ja) * | 1995-12-27 | 1997-07-11 | Toshiba Corp | データスライス回路 |
JP2004040350A (ja) | 2002-07-02 | 2004-02-05 | Matsushita Electric Ind Co Ltd | データスライス装置、データスライス方法、及び振幅判定値設定方法 |
JP2005348069A (ja) * | 2004-06-02 | 2005-12-15 | Matsushita Electric Ind Co Ltd | 著作権信号検出回路 |
-
2008
- 2008-05-14 US US12/307,683 patent/US20090237558A1/en not_active Abandoned
- 2008-05-14 JP JP2008541529A patent/JP4902886B2/ja not_active Expired - Fee Related
- 2008-05-14 EP EP08751721A patent/EP2046030A1/en not_active Withdrawn
- 2008-05-14 WO PCT/JP2008/001203 patent/WO2008146454A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09182041A (ja) * | 1995-12-27 | 1997-07-11 | Toshiba Corp | データスライス回路 |
JP2004040350A (ja) | 2002-07-02 | 2004-02-05 | Matsushita Electric Ind Co Ltd | データスライス装置、データスライス方法、及び振幅判定値設定方法 |
JP2005348069A (ja) * | 2004-06-02 | 2005-12-15 | Matsushita Electric Ind Co Ltd | 著作権信号検出回路 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8864945B2 (en) | 2009-01-28 | 2014-10-21 | Georgia-Pacific Consumer Products Lp | Method of making a multi-ply wiper/towel product with cellulosic microfibers |
US8864944B2 (en) | 2009-01-28 | 2014-10-21 | Georgia-Pacific Consumer Products Lp | Method of making a wiper/towel product with cellulosic microfibers |
Also Published As
Publication number | Publication date |
---|---|
EP2046030A1 (en) | 2009-04-08 |
US20090237558A1 (en) | 2009-09-24 |
JP4902886B2 (ja) | 2012-03-21 |
JPWO2008146454A1 (ja) | 2010-08-19 |
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