[특허]Low-power circuit and method for providing rapid frequency lock in a wireless communications device

Low-power circuit and method for providing rapid frequency lock in a wireless communications device 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G08C-019/04 G08C-019/10
출원번호	US-0677095 (1996-07-09)
발명자 / 주소	Stoop Michael D. Flach Terry E.
출원인 / 주소	Vitalcom
대리인 / 주소	Knobbe, Martens, Olson & Bear, LLP
인용정보	피인용 횟수 : 210 인용 특허 : 0

초록 ▼

A two-way medical telemetry system is provided for displaying and monitoring, at a central location, physiologic and other patient data of multiple, remotely-located patients. The system comprises multiple battery-powered remote telemeters, each of which is worn by a respective patient, and a central station which receives, displays and monitors the patient data received (via RF) from the remote telemeters. The telemeters communicate with the central station using a two-way TDMA protocol which permits the time sharing of timeslots, and which uses a contention slot to permit telemeters to transmit service requests to the central station. Two-way spacial diversity is provided using only one antenna and one transceiver on each remote telemeter. The remote telemeters include circuitry for turning off the active transceiver components thereof when not in use (to conserve battery power), and include circuitry for performing a rapid, low-power frequency lock cycle upon power-up. The system has multiple modes of operation, including a frequency hopping (spread spectrum) mode and a fixed frequency mode, both of which preferably make use of the 902-928 MHz ISM band. Patient locators are provided to allow the clinician to track the location of each patient.

대표청구항 ▼

[ What is claimed is:] [1.] A method of rapidly locking the carrier frequency of a wireless communications device, comprising the steps of:(a) providing a phase-lock loop (PLL) circuit having a sample-and-hold circuit connected to an input of a voltage-controlled oscillator (VCO), an output of said VCO providing a carrier signal for transmitting and/or receiving data;(b) closing a loop of said PLL circuit to initiate a phase-lock process;(c) waiting a predetermined delay after said closing to allow a frequency of said carrier signal to settle to within a selected acceptable margin of error from a predetermined carrier frequency, said predetermined delay being shorter than a delay required for said PLL circuit to reach a phase-locked state; and(d) opening said sample-and-hold circuit at the end of said predetermined delay to thereby hold said carrier signal at a constant frequency which falls within said selected acceptable margin of error.

이 특허를 인용한 특허 (210)

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Petite, Thomas David, System and method for transmitting an emergency message over an integrated wireless network.
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Petite,Thomas D., System and method for transmitting an emergency message over an integrated wireless network.
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Petite, Thomas D., System and method for transmitting pollution information over an integrated wireless network.
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Petite, Thomas D., System and method for transmitting pollution information over an integrated wireless network.
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Petite, Thomas David, System and method for transmitting pollution information over an integrated wireless network.
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Petite,Thomas D., System and method for transmitting pollution information over an integrated wireless network.
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Libbus, Imad; Bly, Mark, System and methods for wireless body fluid monitoring.
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Collins, Jr., Williams F.; Allen, James M.; Huster, Keith A.; Riley, Carl W.; Glidewell, Patricia A.; Vanderpohl, III, Irvin J.; Schuman, Richard J.; Howell, Benjamin E.; Wildman, Timothy D., System wide firmware updates to networked hospital beds.
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Petite, Thomas D., Systems and methods for controlling communication between a host computer and communication devices.
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Petite, Thomas David, Systems and methods for controlling communication between a host computer and communication devices.
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Petite, Thomas David, Systems and methods for controlling communication between a host computer and communication devices.
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Brownrigg, Edwin B., Systems and methods for facilitating wireless network communication, satellite-based wireless network systems, and aircraft-based wireless network systems, and related methods.
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Brownrigg, Edwin B., Systems and methods for facilitating wireless network communication, satellite-based wireless network systems, and aircraft-based wireless network systems, and related methods.
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Shetty, Pradeep; Foslien, Wendy; Curtner, Keith; Mangsuli, Prunaprajna R.; Kolavennu, Soumitri, Systems and methods for managing a programmable thermostat.
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Shetty, Pradeep; Foslien, Wendy; Curtner, Keith; Mangsuli, Purnaprajna R.; Kolavennu, Soumitri, Systems and methods for managing a programmable thermostat.
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Petite, Thomas D., Systems and methods for monitoring and controlling remote devices.
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Petite, Thomas D., Systems and methods for monitoring and controlling remote devices.
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Petite, Thomas David, Systems and methods for monitoring and controlling remote devices.
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Petite, Thomas David; Huff, Richard M, Systems and methods for monitoring and controlling remote devices.
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Petite, Thomas David; Huff, Richard M., Systems and methods for monitoring and controlling remote devices.
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Petite, Thomas D., Systems and methods for monitoring conditions.
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Petite, Thomas D., Systems and methods for monitoring conditions.
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Petite, Thomas David, Systems and methods for monitoring conditions.
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Petite, Thomas David; Huff, Richard M, Systems and methods for monitoring vehicle parking.
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Petite, Thomas David, Systems and methods for providing emergency messages to a mobile device.
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Petite, Thomas David, Systems and methods for providing emergency messages to a mobile device.
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Sampath, Anand; Muhsin, Bilal, Systems and methods for storing, analyzing, and retrieving medical data.
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Muhsin, Bilal; Sampath, Anand, Systems and methods for storing, analyzing, retrieving and displaying streaming medical data.
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Muhsin, Bilal; Sampath, Anand; Gruber, Travis, Systems and methods for storing, analyzing, retrieving and displaying streaming medical data.
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John J. Grevious, Telemetry modulation protocol system for medical devices.
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Schuman, Richard Joseph; Roehl, Erik Edward; Collins, Williams F., User station for healthcare communication system.
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Schuman, Sr., Richard J.; Roehl, Erik E.; Collins, Jr., Williams F., User station for healthcare communication system.
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Schuman, Sr., Richard Joseph; Roehl, Erik E.; Collins, Jr., Williams F., User station for healthcare communication system.
상세보기
Schuman, Sr., Richard Joseph; Roehl, Erik Edward; Collins, Jr., Williams F., User station for healthcare communication system.
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Norskov, Soren; Rasmussen, Carsten; Povlsen, Niels Thomas Hedegaard, VCO with programmable output power.
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Blackadar, Thomas P.; Monahan, David P., Versatile sensors with data fusion functionality.
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Kiani, Massi E., Virtual display.
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Gibson, Grant S.; Gondek, Cory R.; Sunderland, Richard A.; Baker, Steven D.; Lewis, Robert T.; Lathrop, Braxton L.; Dunn, Christopher L.; Kotzer, Omer, Vital signs monitor.
상세보기
Gibson, Grant S.; Gondek, Cory R.; Sunderland, Richard A.; Baker, Steven D.; Lewis, Robert T.; Lathrop, Braxton L.; Dunn, Christopher L.; Kotzer, Omer, Vital signs monitor.
상세보기
Knieriem,Alan S.; Witkowski,William R.; Kingston,Ronald J.; Osiecki,Scott W., Vital signs monitor.
상세보기
Knieriem,Alan S.; Witkowski,William R.; Kingston,Ronald J.; Osiecki,Scott W., Vital signs monitor.
상세보기
Istvan, Rud; Gregory, Bill; Solovay, Kenneth; Chastain, David Paul; Gundlach, John David; Hopman, Nicholas C.; Williams, Daniel L.; Lodato, Franco; Salem, Michael, Wireless ECG system.
상세보기
Istvan,Rud; Gregory,Bill; Solovay,Kenneth; Chastain,David Paul; Gundlach,John David; Hopman,Nicholas C.; Williams,Daniel L.; Lodato,Franco; Salem,Michael, Wireless ECG system.
상세보기
Istvan,Rud; Gregory,Bill; Solovay,Kenneth; Chastain,David Paul; Gundlach,John David; Hopman,Nicholas C.; Williams,Daniel L.; Lodato,Franco; Salem,Michael, Wireless ECG system.
상세보기
Conforti, Fred J., Wireless access control system with energy-saving piezo-electric locking.
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Collins, Jr., Williams F.; Allen, James M.; Huster, Keith A.; Riley, Carl W.; Glidewell, Patricia A.; Vanderpohl, Irwin J.; Schuman, Richard J.; Howell, Benjamin E.; Wildman, Timothy D., Wireless bed connectivity.
상세보기
Collins, Jr., Williams F.; Allen, James M.; Huster, Keith A.; Riley, Carl W.; Glidwell, Patricia A.; Vanderpohl, III, Irvin J.; Schuman, Richard J.; Howell, Benjamin E.; Wildman, Timothy D., Wireless bed connectivity.
상세보기
Collins, Jr., Williams F.; Allen, James M.; Huster, Keith A.; Riley, Carl W.; Glidewell, Patricia A.; Vanderpohl, III, Irvin J.; Schuman, Richard J.; Mathura, Christopher A., Wireless bed locating system.
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Samuelsson, Magnus; Tulkki, Sauli, Wireless communication of physiological variables using spread spectrum.
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Heitzmann, Harold A.; Frazier, John A.; McKeown, Morgan T.; Noda, Wayne A.; Sutton, III, George Francis; Yadlowsky, Ann B.; Gelvin, Michael LeRoy; Armstrong, John T.; Richert, John D., Wireless communication protocol for a medical sensor system.
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Hopman,Nicholas C.; Williams,Daniel L.; Lodato,Franco, Wireless electrocardiograph system and method.
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Besson, Marcus; von Czettriz, Gotthart; Bax, Ralph, Wireless medical diagnosis and monitoring equipment.
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Besson,Marcus; von Czettriz,Gotthart; Bax,Ralph, Wireless medical diagnosis and monitoring equipment.
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Petite, David, Wireless network protocol system and methods.
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Petite, David, Wireless network protocol systems and methods.
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Brownrigg, Edwin B.; Wilson, Thomas W., Wireless network system and method for providing same.
상세보기
Brownrigg, Edwin B.; Wilson, Thomas W., Wireless network system and method for providing same.
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Brownrigg, Edwin B.; Wilson, Thomas W., Wireless network system and method for providing same.
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Rodenbeck, Robert Wilmer; Russell, Roger Keith; Long, Michael Lee, Wireless security control system.
상세보기
Rodenbeck, Robert Wilmer; Russell, Roger Keith; Long, Michael Lee, Wireless security control system.
상세보기
Rodenbeck, Robert Wilmer; Russell, Roger Keith; Long, Michael Lee, Wireless security control system.
상세보기
Reeder, Jeffrey M.; Thomas, Robert; Brisbine, Patrick, Wireless sensor device with wireless remote programming.
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Khair, Mohammad; Lopez, Salvador; Ng, Richard; Ghaem, Sanjar; Olson, William L., Wireless system protocol for telemetry monitoring.
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Anandakumar, Krishnasamy; Viswanathan, Vishu R.; McCree, Alan V., Wireless telephone with excitation reconstruction of lost packet.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Low-power circuit and method for providing rapid frequency lock in a wireless communications device 원문보기

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연합인증

Low-power circuit and method for providing rapid frequency lock in a wireless communications device 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

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이 특허를 인용한 특허 (210)

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