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특허 상세정보

FSK demodulating device

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04L-027/14   
미국특허분류(USC) 375/88 ; 375/80 ; 307/358 ; 329/300
출원번호 US-0234734 (1988-08-22)
우선권정보 JP-0225525 (1987-09-09)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 25  인용 특허 : 1
초록

An FSK shift keying device includes a detector for detecting a transmission frame consisting of a preamble, data, and a postamble, a leading edge detector for detecting a leading edge of a voltage signal detected by the detector, a microprocessor for receiving a detection signal output from the leading edge detector as an interrupt signal, and resetting and restarting a timer, the timer for counting a time lapse in accordance with a clock signal from a clock generator, a sample and hold circuit for holding the voltage signal output from the detector when...

대표
청구항

A frequency shift keying (FSK) demodulating device in a transmission system for formatting digital data into a transmission frame including at least a preamble to transmit the data as a frequency shift keying signal, comprising: detecting means for detecting the input frequency shift keying signal (FSK signal) to convert the detected signal into a voltage signal corresponding to each of carrier frequency values; and discriminating means coupled to said detecting means for discriminating the voltage signal output from said detecting means to an original d...

이 특허를 인용한 특허 피인용횟수: 25

  1. Eggers,Georg Erhard; Kliewer,Jorg; Schneider,Ralf; Wirth,Norbert. Apparatus for signaling that a predetermined time value has elapsed. USP2006107116737.
  2. Yang Chung-Gil,KRX. Demodulator for frequency shift keying signals. USP2000126160857.
  3. Majima, Taichi. Device and method for correcting a data error in communication path. USP2013078494071.
  4. Majima, Taichi. Device and method for correcting a data error in communication path. USP2013078498355.
  5. Kim, Deoghyeon; Lee, Keunhyung; Kim, Hyunsang; Kim, Moonhyun. Diagnostic apparatus and method for home appliance. USP2018059979560.
  6. Han, Jonghye; Cho, Inhaeng; Lee, Phaljin; Jeong, Hoijin. Diagnostic system and method for home appliance. USP2015038983798.
  7. Abe Katsuaki,JPX ; Kishigami Takaaki,JPX ; Mimura Masahiro,JPX ; Hasegawa Makoto,JPX ; Yokozaki Katsushi,JPX ; Yamaki Yoichi,JPX ; Tsumura Toshiyuki,JPX ; Katayama Hiroshi,JPX. FSK signal receiver. USP1998075781588.
  8. Abe Katsuaki,JPX ; Kishigami Takaaki,JPX ; Mimura Masahiro,JPX ; Hasegawa Makoto,JPX ; Yokozaki Katsushi,JPX ; Yamaki Yoichi,JPX ; Tsumura Toshiyuki,JPX ; Katayama Hiroshi,JPX. FSK signal receiver. USP1999115987075.
  9. Kawai, Kazuo. Frequency scanning FSK receiver. USP2003056570937.
  10. Cho, In Haeng; Choi, Mun Ho; Park, Tae In; Lee, Phal Jin; Son, Jin Hwan. Home appliance. USP2014108854204.
  11. Lee, Phal Jin; Jeong, Hoi Jin; Han, Jong Hye; Kim, Young Soo; Cho, In Haeng; Jeon, Si Moon. Home appliance and home appliance system. USP2015069054953.
  12. Ha, Sangdoo; Lee, Jinwook; Kim, Moonhyun; Kim, Deoghyeon. Home appliance and its system. USP2015049013320.
  13. Ha, Sangdoo; Lee, Jinwook; Kim, Moonhyun; Kim, Deoghyeon. Home appliance and method of outputting signal sound for diagnosis. USP2016119495859.
  14. Cho, In Haeng; Lee, Phal Jin; Jeong, Hoi Jin; Han, Jong Hye. Home appliance diagnosis system, and method for operating same. USP2015038984338.
  15. Kim, Hyunsang; Kim, Deoghyeon. Home appliance, home appliance diagnostic system, and method. USP2015119197437.
  16. Giles Terence George,GBX. Low power density radio system. USP2001036208696.
  17. White Jonathan R.. Method and apparatus for optically reading an information pattern. USP1999095949056.
  18. Koenck Steven E. ; Mahany Ronald L. ; Frede William W.. Method of and apparatus for controlling modulation of digital signals in frequency modulated transmissions. USP1999065912926.
  19. Koenck Steven E. (Cedar Rapids IA) Mahany Ronald L. (Cedar Rapids IA) Frede William W. (Cedar Rapids IA). Method of and apparatus for controlling modulation of digital signals in frequency-modulated transmissions. USP1996095555276.
  20. Ordish Christopher J.,GB2 ; Richards John M.,GB2 ; Mackenzie Clifford A.. Offer matching system having timed match acknowledgment. USP1998035727165.
  21. Shim, Jai Hwan. Refrigerator and diagnostic system for the same. USP2017059644886.
  22. Sakai,Shogo. Remote control signal receiver and remote control signal receiving method. USP2008127472319.
  23. Majima, Taichi. Scrambler, scramble processing method, and program. USP2013038396219.
  24. Majima, Taichi. Scrambler, scramble processing method, and program. USP2013018363826.
  25. Mizuno,Koutaro. Spread spectrum demodulator employing frequency detection. USP2009017477679.