HK18488A - Demodulator logic for frequency shift keyed signals - Google Patents
Demodulator logic for frequency shift keyed signalsInfo
- Publication number
- HK18488A HK18488A HK184/88A HK18488A HK18488A HK 18488 A HK18488 A HK 18488A HK 184/88 A HK184/88 A HK 184/88A HK 18488 A HK18488 A HK 18488A HK 18488 A HK18488 A HK 18488A
- Authority
- HK
- Hong Kong
- Prior art keywords
- flip
- flop
- demodulator
- signals
- logic
- Prior art date
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
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
- H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Processing Of Color Television Signals (AREA)
- Color Television Systems (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Amplifiers (AREA)
- Burglar Alarm Systems (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08315172A GB2141007B (en) | 1983-06-02 | 1983-06-02 | Demodulator logic for frequency shift keyed signals |
Publications (1)
Publication Number | Publication Date |
---|---|
HK18488A true HK18488A (en) | 1988-03-18 |
Family
ID=10543707
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HK184/88A HK18488A (en) | 1983-06-02 | 1988-03-10 | Demodulator logic for frequency shift keyed signals |
Country Status (11)
Country | Link |
---|---|
US (1) | US4571738A (xx) |
EP (1) | EP0127941B1 (xx) |
JP (1) | JPS6084052A (xx) |
AT (1) | ATE26197T1 (xx) |
AU (1) | AU560425B2 (xx) |
DE (1) | DE3462844D1 (xx) |
ES (1) | ES8703069A1 (xx) |
GB (1) | GB2141007B (xx) |
HK (1) | HK18488A (xx) |
NZ (1) | NZ208029A (xx) |
SG (1) | SG92887G (xx) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4651107A (en) * | 1984-01-11 | 1987-03-17 | Nec Corporation | Demodulator for digital FM signals |
GB2155262B (en) * | 1984-03-01 | 1988-01-20 | Standard Telephones Cables Ltd | Radio receiver |
GB2189114B (en) * | 1986-02-12 | 1990-03-14 | Plessey Co Plc | Radio receivers |
KR920003598B1 (ko) * | 1988-12-22 | 1992-05-04 | 재단법인 한국전자통신 연구소 | Nrz비트 동기방식의 주파수 및 위상검출회로 |
CA2014916C (en) * | 1989-04-20 | 1994-11-08 | Yoichiro Minami | Direct conversion receiver with dithering local carrier frequency for detecting transmitted carrier frequency |
GB2233535A (en) * | 1989-06-30 | 1991-01-09 | Philips Electronic Associated | Radio receiver |
US5333151A (en) * | 1992-11-23 | 1994-07-26 | Ford Motor Company | High speed frequency-shift keying decoder |
US7515896B1 (en) | 1998-10-21 | 2009-04-07 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
US6061551A (en) * | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
US7039372B1 (en) * | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
US6853690B1 (en) * | 1999-04-16 | 2005-02-08 | Parkervision, Inc. | Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments |
US6879817B1 (en) | 1999-04-16 | 2005-04-12 | Parkervision, Inc. | DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
US7693230B2 (en) * | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
US7110444B1 (en) | 1999-08-04 | 2006-09-19 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations |
US8295406B1 (en) | 1999-08-04 | 2012-10-23 | Parkervision, Inc. | Universal platform module for a plurality of communication protocols |
CA2281236C (en) | 1999-09-01 | 2010-02-09 | Tajinder Manku | Direct conversion rf schemes using a virtually generated local oscillator |
US7010286B2 (en) | 2000-04-14 | 2006-03-07 | Parkervision, Inc. | Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
US7454453B2 (en) * | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
US7072427B2 (en) * | 2001-11-09 | 2006-07-04 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
US7460584B2 (en) * | 2002-07-18 | 2008-12-02 | Parkervision, Inc. | Networking methods and systems |
US7379883B2 (en) * | 2002-07-18 | 2008-05-27 | Parkervision, Inc. | Networking methods and systems |
WO2008118768A1 (en) | 2007-03-23 | 2008-10-02 | 3M Innovative Properties Company | Air delivery apparatus for respirator hood |
WO2008118770A1 (en) | 2007-03-23 | 2008-10-02 | 3M Innovative Properties Company | Respirator flow control apparatus and method |
US9868001B2 (en) | 2007-10-05 | 2018-01-16 | 3M Innovative Properties Company | Respirator flow control apparatus and method |
AU2008321312B2 (en) | 2007-11-12 | 2012-11-29 | 3M Innovative Properties Company | Respirator assembly with air flow direction control |
RU2522692C1 (ru) * | 2012-11-12 | 2014-07-20 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Радиоприемное устройство с автокорреляционным разделением посылок частотно-манипулированного сигнала с непрерывной фазой |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1517121A (en) * | 1977-01-13 | 1978-07-12 | Standard Telephones Cables Ltd | Radio receiver for fsk signals |
US4193034A (en) * | 1978-07-06 | 1980-03-11 | International Standard Electric Corporation | Radio receiver for FSK signals |
GB2032737A (en) * | 1978-10-24 | 1980-05-08 | Standard Telephones Cables Ltd | Radio receiver for tone modulated signals |
GB2057820B (en) * | 1979-09-04 | 1984-07-04 | Standard Telephones Cables Ltd | Radio receiver for fsk signals |
US4486715A (en) * | 1982-08-04 | 1984-12-04 | Honeywell Inc. | Frequency shift key demodulator |
-
1983
- 1983-06-02 GB GB08315172A patent/GB2141007B/en not_active Expired
-
1984
- 1984-04-27 EP EP84302842A patent/EP0127941B1/en not_active Expired
- 1984-04-27 DE DE8484302842T patent/DE3462844D1/de not_active Expired
- 1984-04-27 AT AT84302842T patent/ATE26197T1/de not_active IP Right Cessation
- 1984-05-02 NZ NZ208029A patent/NZ208029A/en unknown
- 1984-05-24 US US06/613,426 patent/US4571738A/en not_active Expired - Fee Related
- 1984-06-01 ES ES533041A patent/ES8703069A1/es not_active Expired
- 1984-06-01 AU AU28962/84A patent/AU560425B2/en not_active Ceased
- 1984-06-01 JP JP59111070A patent/JPS6084052A/ja active Pending
-
1987
- 1987-10-24 SG SG928/87A patent/SG92887G/en unknown
-
1988
- 1988-03-10 HK HK184/88A patent/HK18488A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
SG92887G (en) | 1989-05-26 |
ES533041A0 (es) | 1986-12-01 |
EP0127941B1 (en) | 1987-03-25 |
ATE26197T1 (de) | 1987-04-15 |
AU2896284A (en) | 1984-12-06 |
GB2141007B (en) | 1986-07-23 |
JPS6084052A (ja) | 1985-05-13 |
US4571738A (en) | 1986-02-18 |
ES8703069A1 (es) | 1986-12-01 |
EP0127941A1 (en) | 1984-12-12 |
NZ208029A (en) | 1988-02-12 |
GB8315172D0 (en) | 1983-07-06 |
GB2141007A (en) | 1984-12-05 |
DE3462844D1 (en) | 1987-04-30 |
AU560425B2 (en) | 1987-04-09 |
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