JPH10502238A - 改良形トーン検出手段を具えた伝送システム - Google Patents
改良形トーン検出手段を具えた伝送システムInfo
- Publication number
- JPH10502238A JPH10502238A JP8531589A JP53158996A JPH10502238A JP H10502238 A JPH10502238 A JP H10502238A JP 8531589 A JP8531589 A JP 8531589A JP 53158996 A JP53158996 A JP 53158996A JP H10502238 A JPH10502238 A JP H10502238A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- correlator
- tone
- additional
- correlation
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Transmitters (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.トーンを伝送路を経て受信機に伝送し、受信機が受信信号内の前記トーンの 存在を検出する検出器を具えている伝送システムにおいて、前記トーン検出器は 入力信号と基準信号の相関値を表す相関信号を取り出す相関器を具えるとともに 、少なくとも一つの追加の相関器を具え、且つ前記相関器と前記追加の相関器が 互いにずれた測定期間を有していることを特徴とする伝送システム。 2.前記トーン検出器が3つの追加の相関器を具え、且つ前記相関器と前記追加 の相関器が互いにずれた測定期間を有していることを特徴とする請求の範囲1記 載の伝送システム。 3.受信信号中のトーンの存在を検出する検出器を具えた端末において、前記検 出器は入力信号と基準信号の相関値を表す相関信号を取り出す相関器を具えると ともに、少なくとも一つの追加の相関器を具え、且つ前記相関器と前記追加の相 関器が互いにずれた測定期間を有していることを特徴とする端末。 4.前記検出器が3つの追加の相関器を具え、且つ前記相関器と前記追加の相関 器が互いにずれた測定期間を有していることを特徴とする請求の範囲3記載の端 末。 5.入力信号中のトーンの存在を検出する検出器において、該検出器は入力信号 と基準信号の相関値を表す相関信号を取り出す相関器を具えるとともに、少なく とも一つの追加の相関器を具え、且つ前記相関器と前記追加の相関器が互いにず れた測定期間を有していることを特徴とする検出器。 6.前記検出器が3つの追加の相関器を具え、且つ前記相関器と前記追加の相関 器が互いにずれた測定期間を有していることを特徴とする請求の範囲5記載の検 出器。 7.入力信号中のトーンの存在を検出する方法において、入力信号と基準信号と の相関値を表す相関信号を取り出し、入力信号と基準信号との相関値を表す追加 の相関信号を取り出し、前記相関信号の取り出しと前記追加の相関信号の取り出 しを互いにずれた測定期間中に行うことを特徴とするトーン検出方法。 8.3つの追加の相関信号を取り出し、前記相関信号の取り出しと前記3つの追 加の相関信号の取り出しを互いにずれた測定期間中に行うことを特徴とする請求 の範囲7記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95200988 | 1995-04-18 | ||
NL95200988.4 | 1995-04-18 | ||
PCT/IB1996/000297 WO1996033582A2 (en) | 1995-04-18 | 1996-04-10 | Transmission system with improved tone detection |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10502238A true JPH10502238A (ja) | 1998-02-24 |
Family
ID=8220201
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8531589A Ceased JPH10502238A (ja) | 1995-04-18 | 1996-04-10 | 改良形トーン検出手段を具えた伝送システム |
Country Status (8)
Country | Link |
---|---|
US (1) | US5850438A (ja) |
EP (1) | EP0770311B1 (ja) |
JP (1) | JPH10502238A (ja) |
KR (1) | KR100386485B1 (ja) |
CN (1) | CN1095291C (ja) |
DE (1) | DE69629643T2 (ja) |
TW (1) | TW293224B (ja) |
WO (1) | WO1996033582A2 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6424925B1 (en) * | 1999-08-31 | 2002-07-23 | Integrated Telecom Express, Inc. | Circuit and method for detecting a tone signal |
US6295444B1 (en) * | 1999-11-01 | 2001-09-25 | Motorola Inc. | Non-predictive tone-coded-squelch frequency determination method |
US20020141568A1 (en) * | 2001-04-02 | 2002-10-03 | Acoustic Technologies, Inc. | Dual threshold correlator |
US20020172349A1 (en) * | 2001-05-17 | 2002-11-21 | Shea Phillip N. | Neural net-call progress tone detector |
KR100591700B1 (ko) * | 2001-10-06 | 2006-07-03 | 엘지노텔 주식회사 | 배열 안테나 시스템에서 신호 경로 탐색 방법 및 이를위한 장치 |
US9077315B2 (en) * | 2003-06-25 | 2015-07-07 | John W. Bogdan | Inverse signal transformation |
US9100165B2 (en) * | 2005-06-27 | 2015-08-04 | John W. Bogdan | Direct data recovery |
US9136891B2 (en) * | 2011-12-12 | 2015-09-15 | John W. Bogdan | Adaptive data decoding |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7511707A (nl) * | 1975-10-06 | 1977-04-12 | Philips Nv | Kruiscorrelatie-inrichting. |
US4064488A (en) * | 1976-06-10 | 1977-12-20 | Motorola, Inc. | Sampled signal detector |
US4088960A (en) * | 1977-01-18 | 1978-05-09 | Osborne-Hoffman, Inc. | Monolithically integrable correlation detector |
US4216463A (en) * | 1978-08-10 | 1980-08-05 | Motorola, Inc. | Programmable digital tone detector |
US4363100A (en) * | 1980-10-28 | 1982-12-07 | Northern Telecom Limited | Detection of tones in sampled signals |
US4783845A (en) * | 1985-12-20 | 1988-11-08 | Itt Aerospace Optical | Digital tone squelch detector |
US4769610A (en) * | 1987-06-29 | 1988-09-06 | Motorola, Inc. | Tone decoder |
CN2083296U (zh) * | 1990-11-12 | 1991-08-21 | 万里 | 电子音频检测器 |
CN2123076U (zh) * | 1992-05-21 | 1992-11-25 | 武汉科理技术开发公司 | 音频检测仪 |
US5519774A (en) * | 1992-12-08 | 1996-05-21 | Bell Communications Research, Inc. | Method and system for detecting at a selected station an alerting signal in the presence of speech |
-
1996
- 1996-04-10 EP EP96906889A patent/EP0770311B1/en not_active Expired - Lifetime
- 1996-04-10 KR KR1019960707353A patent/KR100386485B1/ko not_active IP Right Cessation
- 1996-04-10 WO PCT/IB1996/000297 patent/WO1996033582A2/en active IP Right Grant
- 1996-04-10 DE DE69629643T patent/DE69629643T2/de not_active Expired - Fee Related
- 1996-04-10 CN CN96190572A patent/CN1095291C/zh not_active Expired - Fee Related
- 1996-04-10 JP JP8531589A patent/JPH10502238A/ja not_active Ceased
- 1996-04-16 US US08/632,937 patent/US5850438A/en not_active Expired - Fee Related
- 1996-05-01 TW TW085105219A patent/TW293224B/zh active
Also Published As
Publication number | Publication date |
---|---|
WO1996033582A3 (en) | 1997-01-09 |
KR100386485B1 (ko) | 2003-08-19 |
WO1996033582A2 (en) | 1996-10-24 |
EP0770311B1 (en) | 2003-08-27 |
CN1155960A (zh) | 1997-07-30 |
DE69629643T2 (de) | 2004-06-17 |
DE69629643D1 (de) | 2003-10-02 |
KR970704308A (ko) | 1997-08-09 |
TW293224B (ja) | 1996-12-11 |
CN1095291C (zh) | 2002-11-27 |
US5850438A (en) | 1998-12-15 |
EP0770311A2 (en) | 1997-05-02 |
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