[특허]Proximity actuator and reader for an electronic access system

Proximity actuator and reader for an electronic access system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04Q-009/00
출원번호	US-0102534 (1993-08-05)
발명자 / 주소	Sanderson Glenn A. (2211 Alameda Padra Serra Santa Barbara CA 93103)
인용정보	피인용 횟수 : 73 인용 특허 : 0

초록 ▼

An identification token and reader circuit for an electronic identification and latch/alarm system, the token comprising an LC resonant circuit, a digital counter, an analog or digital demultiplexer and at least one analog switch. The token\s supply voltage is derived from the token\s resonant LC circuit by a rectifier means when the token is proximal to a suitable oscillator as found in a reader/controller. The device is useful for access control in an electronic lock and key system. When the token is brought near to the lock part, an oscillator contained within the lock part oscillates at a high frequency. The oscillation is picked up by the key part where it is modulated with a frequency or pulse pattern serving as a key identifier, then transmitted back to the lock part where the enclosed carrier is demodulated by means of synchronous detection and processed by recognition means at the lock side.

대표청구항 ▼

An electronic access system comprising: (a) a key portion, said key portion consisting of an identification token comprising, in combination a parallel resonant circuit and a switching device with a resistor in series therewith, said switching device and resistor combination being connected in parallel with said parallel resonant circuit, said switching device and resistor combination either loading or unloading said parallel resonant circuit, and a coding means controlling said switching device wherein said coding means further comprises a digital circuit containing at least one preselected code, said token receiving, in operation, its supply voltage from said resonant circuit by rectifier means thereon and an input signal from said resonant circuit which input signal is processed by said coding means to provide an output signal, said output signal carrying said at least one preselected code, said output signal being fed to said switching device for effecting the loading or coupling of said resonant circuit; and (b) a lock portion, said lock portion comprising a reader data detection circuit, said reader data detection circuit comprising a resonant circuit and a synchronous detector, said resonant circuit receiving a driver signal from a sine wave carrier source and said resonant circuit providing a reader input signal to said synchronous detector, said synchronous detector including means for forming an instantaneous value signal representing the instantaneous absolute value of the amplitude of said reader input signal, and means for comparing said instantaneous value signal to a fixed reference voltage to recover said at least one preselected code.

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총 건의 자료가 검색되었습니다.

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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)
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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

연합인증

Proximity actuator and reader for an electronic access system 원문보기

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연구과제 타임라인

이 특허를 인용한 특허 (73)

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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

Proximity actuator and reader for an electronic access system 원문보기

초록 ▼

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