JPS57184356A - Fsk demodulating circuit - Google Patents
Fsk demodulating circuitInfo
- Publication number
- JPS57184356A JPS57184356A JP56069137A JP6913781A JPS57184356A JP S57184356 A JPS57184356 A JP S57184356A JP 56069137 A JP56069137 A JP 56069137A JP 6913781 A JP6913781 A JP 6913781A JP S57184356 A JPS57184356 A JP S57184356A
- Authority
- JP
- Japan
- Prior art keywords
- delay
- output
- outputs
- counters
- circuit
- 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
- 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
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56069137A JPS57184356A (en) | 1981-05-08 | 1981-05-08 | Fsk demodulating circuit |
GB08211839A GB2102223B (en) | 1981-05-08 | 1982-04-23 | A frequency shift keying demodulation circuit |
US06/376,059 US4551846A (en) | 1981-05-08 | 1982-05-07 | FSK Demodulation circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56069137A JPS57184356A (en) | 1981-05-08 | 1981-05-08 | Fsk demodulating circuit |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63124158A Division JPS63308450A (ja) | 1988-05-20 | 1988-05-20 | Fsk復調回路 |
JP63124159A Division JPS63308451A (ja) | 1988-05-20 | 1988-05-20 | Fsk復調回路 |
JP63124160A Division JPS63308452A (ja) | 1988-05-20 | 1988-05-20 | Fsk復調回路 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57184356A true JPS57184356A (en) | 1982-11-13 |
JPH0127618B2 JPH0127618B2 (ja) | 1989-05-30 |
Family
ID=13393951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56069137A Granted JPS57184356A (en) | 1981-05-08 | 1981-05-08 | Fsk demodulating circuit |
Country Status (3)
Country | Link |
---|---|
US (1) | US4551846A (ja) |
JP (1) | JPS57184356A (ja) |
GB (1) | GB2102223B (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6097758A (ja) * | 1983-10-18 | 1985-05-31 | モトローラ・インコーポレーテツド | 位相状態復調器 |
JPS60121850A (ja) * | 1983-12-05 | 1985-06-29 | Mitsubishi Electric Corp | 発呼・切断信号の伝送装置 |
JPS60169962U (ja) * | 1984-04-19 | 1985-11-11 | 日本電気株式会社 | デイジタル信号伝送用送受信機 |
JPS612459A (ja) * | 1984-06-04 | 1986-01-08 | フランス共和国 | 周波数復調器 |
JP2014030269A (ja) * | 2008-05-29 | 2014-02-13 | Sk Telecom Kk | デジタル高周波処理技術を利用した近距離無線信号送受信装置及び方法 |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2533096B1 (fr) * | 1982-09-14 | 1991-06-07 | Suwa Seikosha Kk | Circuit de demodulation pour un signal module par deplacement de frequence |
DE3313035A1 (de) | 1983-04-12 | 1984-10-18 | Deutsche Fernsprecher Gesellschaft Mbh Marburg, 3550 Marburg | Verfahren und schaltung zur uebertragung digitaler informationen |
EP0175947B1 (de) * | 1984-09-20 | 1989-08-09 | Siemens Aktiengesellschaft | Schaltungsanordnung zum Demodulieren eines binären FM-Signals |
GB8513218D0 (en) * | 1985-05-24 | 1985-06-26 | Emi Ltd | Signal receiver |
NZ221479A (en) * | 1986-08-22 | 1990-09-26 | Transcom Australia Ltd | Modem with sync regeneration for hf radio |
US4926444A (en) * | 1988-04-29 | 1990-05-15 | Scientific-Atlanta, Inc. | Data transmission method and apparatus by period shift keying (TSK) |
US4860318A (en) * | 1988-07-06 | 1989-08-22 | The United States Of America As Represented By The Secretary Of The Air Force | PSK detection using an IFM receiver |
JP2863186B2 (ja) * | 1989-03-14 | 1999-03-03 | 沖電気工業株式会社 | Msk信号検出回路 |
US5168275A (en) * | 1990-02-07 | 1992-12-01 | International Business Machines Corporation | Method and apparatus for decoding two frequency (f/2f) data signals |
US5311556A (en) * | 1991-08-30 | 1994-05-10 | Elsag International B.V. | Digital FSK transmitter receiver and method of operating same |
GB2264614B (en) * | 1992-02-20 | 1996-03-20 | Motorola Israel Ltd | FSK demodulator |
CA2116042C (en) * | 1994-02-21 | 1999-03-23 | Alexander F. Tulai | Digital fsk receiver using double zero-crossing |
US5550505A (en) * | 1994-12-30 | 1996-08-27 | General Electric Company | Frequency shift keying (FSK) demodulator for use in low signal-to-noise ratio environments |
FR2738423B1 (fr) * | 1995-08-30 | 1997-09-26 | Snecma | Demodulateur de frequence numerique |
US5684837A (en) * | 1996-03-06 | 1997-11-04 | United Microelectronics Corporation | Adjustable digital FSK demodulator |
JP3534629B2 (ja) * | 1998-12-10 | 2004-06-07 | 株式会社三協精機製作所 | 磁気記録データの復調方法 |
ATE383645T1 (de) | 1999-03-30 | 2008-01-15 | Nidec Sankyo Corp | Datendemodulationsverfahren und -gerät für magnetische karte. |
US6674786B1 (en) | 1999-04-23 | 2004-01-06 | Sankyo Seiki Mfg. Co., Ltd. | Data demodulation |
KR20010026268A (ko) * | 1999-09-03 | 2001-04-06 | 서민호 | 주파수편이-키잉 복조시스템 |
US6810112B1 (en) * | 1999-10-06 | 2004-10-26 | Fujitsu Limited | Method and apparatus for testing an information notification service |
KR100403625B1 (ko) * | 2001-04-17 | 2003-10-30 | 삼성전자주식회사 | 다중 임계값을 이용한 발신자 정보 복조 장치 및 복조 방법 |
JP2002335292A (ja) * | 2001-05-08 | 2002-11-22 | Nec Microsystems Ltd | Fsk復調方法及びシステム |
WO2005071828A1 (en) * | 2004-01-22 | 2005-08-04 | The Regents Of The University Of Michigan | Demodulatr, chip and method for digitally demodulating an fsk signal |
US20050201490A1 (en) * | 2004-02-20 | 2005-09-15 | Tobias Scholand | Zero-crossing detector for receivers |
CN1969495B (zh) * | 2004-03-18 | 2010-09-15 | 松下电器产业株式会社 | 时钟恢复电路和使用此电路的接收机 |
BRPI0709188A2 (pt) * | 2006-03-29 | 2011-06-28 | Thomson Licensing | amplificador limitador de freqüência em um receptor fsk |
US8373357B2 (en) * | 2009-01-26 | 2013-02-12 | Microchip Technology Incorporated | Modulator module in an integrated circuit device |
IT201600111351A1 (it) * | 2016-11-04 | 2018-05-04 | St Microelectronics Des & Appl | Procedimento per rivelare segnali con modulazione fsk, circuito, dispositivo e prodotto informatico corrispondenti |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55107366A (en) * | 1979-02-09 | 1980-08-18 | Fujitsu Ltd | Waveform reproduction system |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3715666A (en) * | 1971-03-30 | 1973-02-06 | Bell Telephone Labor Inc | Fast start-up system for transversal equalizers |
US3846708A (en) * | 1973-03-15 | 1974-11-05 | Bell Telephone Labor Inc | Digital demodulation of frequency-shift keyed data signals |
US3908169A (en) * | 1974-03-22 | 1975-09-23 | Bell Telephone Labor Inc | Frequency shift demodulator having a variable clock rate |
US3947769A (en) * | 1974-10-23 | 1976-03-30 | Hoffman Electronics Corporation | Threshold correction system in FSK transmissions |
GB1490632A (en) * | 1975-01-21 | 1977-11-02 | Gen Electric Co Ltd | Plural frequency signalling systems |
IT1037127B (it) * | 1975-03-18 | 1979-11-10 | Sits Soc It Telecom Siemens | Demodulatore di onde modulate in frequenza |
JPS5310253A (en) * | 1976-07-16 | 1978-01-30 | Sharp Corp | Fs signal demodulator |
US4378526A (en) * | 1980-09-25 | 1983-03-29 | Northern Telecom Limited | Pulse code demodulator for frequency shift keyed data |
-
1981
- 1981-05-08 JP JP56069137A patent/JPS57184356A/ja active Granted
-
1982
- 1982-04-23 GB GB08211839A patent/GB2102223B/en not_active Expired
- 1982-05-07 US US06/376,059 patent/US4551846A/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55107366A (en) * | 1979-02-09 | 1980-08-18 | Fujitsu Ltd | Waveform reproduction system |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6097758A (ja) * | 1983-10-18 | 1985-05-31 | モトローラ・インコーポレーテツド | 位相状態復調器 |
JPS60121850A (ja) * | 1983-12-05 | 1985-06-29 | Mitsubishi Electric Corp | 発呼・切断信号の伝送装置 |
JPS60169962U (ja) * | 1984-04-19 | 1985-11-11 | 日本電気株式会社 | デイジタル信号伝送用送受信機 |
JPH0543554Y2 (ja) * | 1984-04-19 | 1993-11-02 | ||
JPS612459A (ja) * | 1984-06-04 | 1986-01-08 | フランス共和国 | 周波数復調器 |
JP2014030269A (ja) * | 2008-05-29 | 2014-02-13 | Sk Telecom Kk | デジタル高周波処理技術を利用した近距離無線信号送受信装置及び方法 |
Also Published As
Publication number | Publication date |
---|---|
GB2102223B (en) | 1985-05-01 |
JPH0127618B2 (ja) | 1989-05-30 |
US4551846A (en) | 1985-11-05 |
GB2102223A (en) | 1983-01-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS57184356A (en) | Fsk demodulating circuit | |
JPS5693079A (en) | Measurement of time duration | |
JPS55123548A (en) | Skid control system in use of microcomputer | |
JPS5679972A (en) | Direction finder | |
JPS54139417A (en) | Interpolation receiving devices at voice short break time | |
EP0773447A3 (en) | Time counting circuit, pulse converting circuit and FM demodulating circuit | |
JPS5522131A (en) | Timing meter | |
JPS55146623A (en) | Demodulating circuit for self-clocking information signal | |
JPS5682413A (en) | Counter circuit of digital measuring instrument | |
JPS5253365A (en) | Multiple cards conveying and separating apparatus | |
US4646091A (en) | Airborne set for a two-way distance-ranging system | |
JPS5366268A (en) | Automatic analysis register | |
JPS5598371A (en) | Phase determining device | |
JPS5515017A (en) | Integrating unit | |
JPS5292744A (en) | Range change-over device for flow measuring system range change-over device for flow measuring system | |
SU1179371A1 (ru) | Устройство дл измерени функций распределени мгновенной частоты случайных процессов | |
JPS54134918A (en) | Coding system | |
JPS5763957A (en) | Mfm demodulating circuit | |
JPS5386249A (en) | Digital pace meter | |
JPS5421120A (en) | Coordinate input unit | |
JPS53127258A (en) | Accuracy measuring system of da-ad circuit | |
JPS5366331A (en) | Timing detector | |
JPS52135774A (en) | Digital chronograph | |
JPS5338001A (en) | System for measuring operation performance | |
JPS5286758A (en) | High accurate digital delay circuit |