JPH06503220A - スイッチキャパシタ零交差点検出器を有するトーン受信機 - Google Patents
スイッチキャパシタ零交差点検出器を有するトーン受信機Info
- Publication number
- JPH06503220A JPH06503220A JP5501742A JP50174293A JPH06503220A JP H06503220 A JPH06503220 A JP H06503220A JP 5501742 A JP5501742 A JP 5501742A JP 50174293 A JP50174293 A JP 50174293A JP H06503220 A JPH06503220 A JP H06503220A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- capacitor
- tone receiver
- inverting input
- input terminal
- 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
- 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
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
- H04Q1/453—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling in which m-out-of-n signalling frequencies are transmitted
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/153—Arrangements in which a pulse is delivered at the instant when a predetermined characteristic of an input signal is present or at a fixed time interval after this instant
- H03K5/1536—Zero-crossing detectors
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/156—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width
- H04L27/1563—Demodulator circuits; Receiver circuits with demodulation using temporal properties of the received signal, e.g. detecting pulse width using transition or level detection
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Signal Processing (AREA)
- Manipulation Of Pulses (AREA)
- Amplifiers (AREA)
Abstract
Description
Claims (4)
- 1.少なくとも1つの零交差点検出器(10)を有するトーン受信機において、 この零交差点検出器が、 ※反転入力端(22)と非反転入力端(24)とを有し増幅器及び比較器として 用いられる増幅回路(20)であって、非反転入力端が基準電圧源(26)に結 合され、前記の増幅回路がその出力端(30)と反転入力端(22)との間に第 1オン/オフスイッチ(32)を含む帰還ループを含んでいる当該増幅回路(2 0)と、 ※前記の反転入力端(22)及び非反転入力端(24)間の第1キャバシタ(3 4)と、 ※零交差点検出器の信号入力端(38)と増幅回路(20)との間の第2キャハ シタ(36)と、 ※この第2キャバシタ(36)と直列に接続された第2オン/オフスイッチ(4 0)と、 ※前記の2つのオン/オフスイッチ(32,40)を互いに逆位相で開放及び閉 成させる制御回路(14,16)とを含んでいることを特徴とするトーン受信機 。
- 2.請求の範囲第1項に記載のトーン受信機において、前記の零交差点検出器が 、 ※一端が第3オン/オフスイッチ(44)を経て増幅回路(20)の非反転入力 端(24)に接続される第3キャバシタ(42)と、 ※この第3キャバシタ(42)の他端に接続され、一定の大きさのステップより 成るしきい値電圧信号を生じるしきい値電圧源(46)と、 ※一端が第3キャバシタ(42)と第3オン/オフスイッチ(44)との相互接 続点に接続され、他端が基準電圧源(26)に接続された第4オン/オフスイッ チ(48)とを具え、制御回路(14,16)により、第3及び第4オン/オフ スイッチ(44,48)を第2及び第1オン/オフスイッチ(40,32)とそ れぞれ同相で開放及び閉成させるようにしたことを特徴とするトーン受信機。
- 3.請求の範囲第2項に記載のトーン受信機において、トーン受信機が、前記の しきい値電圧信号の前記のステップに続く第2オン/オフスイッチ(40)のス イッチ・オン期間内で、このステップと大きさが同じで極性が逆の他の電圧ステ ップを生じる手段(14,16)を具えていることを特徴とするトーン受信機。
- 4.請求の範囲第1項に記載のトーン受信機において、第1キャパシタ(34) が増幅回路(20)の入力段の寄生キヤパシタンスを以って構成されていること を特徴とするトーン受信機。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91201679 | 1991-07-01 | ||
EP91201679.7 | 1991-07-01 | ||
PCT/NL1992/000115 WO1993001687A1 (en) | 1991-07-01 | 1992-07-01 | Tone receiver comprising a switch capacitor zero crossing detector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06503220A true JPH06503220A (ja) | 1994-04-07 |
JP3320414B2 JP3320414B2 (ja) | 2002-09-03 |
Family
ID=8207748
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50174293A Expired - Fee Related JP3320414B2 (ja) | 1991-07-01 | 1992-07-01 | スイッチキャパシタ零交差点検出器を有するトーン受信機 |
Country Status (7)
Country | Link |
---|---|
US (1) | US5359652A (ja) |
EP (1) | EP0546173B1 (ja) |
JP (1) | JP3320414B2 (ja) |
KR (1) | KR100256382B1 (ja) |
DE (1) | DE69217853T2 (ja) |
SG (1) | SG44877A1 (ja) |
WO (1) | WO1993001687A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69320630T2 (de) * | 1993-09-14 | 1999-01-14 | Sgs Thomson Microelectronics | Offset-Verminderung in einer Nulldetektorschaltung |
GB2292046B (en) * | 1994-07-26 | 1999-03-03 | Nokia Mobile Phones Ltd | Automatic NAM programmer |
FI106328B (fi) * | 1996-02-08 | 2001-01-15 | Nokia Mobile Phones Ltd | Menetelmä ja piirijärjestely vastaanotetun signaalin käsittelemiseksi |
DE19653189C2 (de) * | 1996-12-19 | 1999-04-15 | Sgs Thomson Microelectronics | Analogsignal-Rechtecksignal-Umformvorrichtung mit Offset-Kompensation |
US6538502B2 (en) * | 2000-12-27 | 2003-03-25 | Intel Corporation | High bandwidth switched capacitor input receiver |
KR20030037660A (ko) * | 2001-11-07 | 2003-05-14 | 현대자동차주식회사 | 차량의 전자 메카니컬 밸브 시스템의 실린더 휴지 제어 방법 |
US7756495B2 (en) * | 2005-09-29 | 2010-07-13 | Intel Corporation | High speed receiver |
KR100858313B1 (ko) | 2007-01-05 | 2008-09-11 | (주)위더스비젼 | 제로 크로스 검출기 및 오디오 장치의 뮤트 신호 발생기 |
CA2623061A1 (en) * | 2007-03-02 | 2008-09-02 | Sean C. Carroll | Zero crossing circuit |
AT507324B1 (de) * | 2008-10-02 | 2012-05-15 | Siemens Ag | Schaltwandler und verfahren zum betreiben des schaltwandlers |
US20100194447A1 (en) * | 2009-02-05 | 2010-08-05 | James Garrett | Zero input bias current, auto-zeroed buffer for a sample and hold circuit |
US8493098B1 (en) * | 2012-03-14 | 2013-07-23 | Honeywell International Inc. | Systems and methods for compensating the input offset voltage of a comparator |
CN105842526B (zh) * | 2012-05-19 | 2019-05-24 | 快捷半导体(苏州)有限公司 | 一种零电流检测电路和方法、及电压变换电路 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3697782A (en) * | 1971-09-20 | 1972-10-10 | Gen Motors Corp | Two-state zero-crossing detector |
US4176286A (en) * | 1978-03-08 | 1979-11-27 | Bei Electronics, Inc. | Signal translator with squelch |
US4191862A (en) * | 1978-08-07 | 1980-03-04 | Rolm Corporation | Dual frequency tone decoder |
US4237390A (en) * | 1978-09-28 | 1980-12-02 | National Semiconductor Corporation | Switching comparator |
US4345169A (en) * | 1980-10-27 | 1982-08-17 | Siemens Corporation | Zero crossing detector |
US4523107A (en) * | 1982-04-23 | 1985-06-11 | Motorola, Inc. | Switched capacitor comparator |
JPS60142613A (ja) * | 1983-12-28 | 1985-07-27 | Fujitsu Ltd | 波形整形回路 |
JPS6215918A (ja) * | 1985-07-15 | 1987-01-24 | Nec Corp | 比較器 |
US4716319A (en) * | 1986-08-04 | 1987-12-29 | Motorola, Inc. | Switched capacitor filter for low voltage applications |
US4707624A (en) * | 1986-09-10 | 1987-11-17 | National Semiconductor Corp. | Offset cancellation scheme for a differential reset stabilized latch |
DE3723919A1 (de) * | 1987-07-18 | 1989-01-26 | Philips Patentverwaltung | Vergleichsschaltung |
US4906996A (en) * | 1988-12-02 | 1990-03-06 | John Fluke Mfg. Co., Inc. | Analog-to-digital converter with offset voltage polarity inversion |
US5182476A (en) * | 1991-07-29 | 1993-01-26 | Motorola, Inc. | Offset cancellation circuit and method of reducing pulse pairing |
-
1992
- 1992-07-01 KR KR1019930700556A patent/KR100256382B1/ko not_active IP Right Cessation
- 1992-07-01 US US07/977,395 patent/US5359652A/en not_active Expired - Lifetime
- 1992-07-01 WO PCT/NL1992/000115 patent/WO1993001687A1/en active IP Right Grant
- 1992-07-01 JP JP50174293A patent/JP3320414B2/ja not_active Expired - Fee Related
- 1992-07-01 SG SG1996008959A patent/SG44877A1/en unknown
- 1992-07-01 EP EP92917809A patent/EP0546173B1/en not_active Expired - Lifetime
- 1992-07-01 DE DE69217853T patent/DE69217853T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0546173A1 (en) | 1993-06-16 |
KR930701901A (ko) | 1993-06-12 |
US5359652A (en) | 1994-10-25 |
WO1993001687A1 (en) | 1993-01-21 |
DE69217853D1 (de) | 1997-04-10 |
KR100256382B1 (ko) | 2000-05-15 |
EP0546173B1 (en) | 1997-03-05 |
SG44877A1 (en) | 1997-12-19 |
DE69217853T2 (de) | 1997-10-09 |
JP3320414B2 (ja) | 2002-09-03 |
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