[특허]System and method for initiating communications between a controller and a selected subset of multiple transponders in a

System and method for initiating communications between a controller and a selected subset of multiple transponders in a 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01S-013/76
출원번호	US-0255088 (1994-06-07)
발명자 / 주소	Smith Gregory M. (Colorado Springs CO)
출원인 / 주소	Ramtron International Corporation (Colorado Springs CO 02)
인용정보	피인용 횟수 : 93 인용 특허 : 0

초록 ▼

A system and method for initiating communication between a controller and a selected one or other subset of multiple transponders in a common RF field in which each transponder has a unique, (or commonly unique) preprogrammed ID number. The controller transmits a series of commands/questions to the transponders and they either respond, or do not respond, to the controller based on their ID number, with the non-responding transponders entering a reset state. The transponders respond to the controller in such a way that, if multiple transponders respond, the controller can recognize that at least one transponder has responded and, for individual responses, the controller is not required to determine how many transponders have responded. Through use of the communications system and method disclosed, a sequence of controller commands and transponder responses single out a selected individual transponder or group of transponders based upon its particular ID number.

대표청구항 ▼

A method for initiating communications between a controller and a selected subset of a plurality of transponders wherein each of said transponders includes an n-bit digital address, the method comprising the steps of: initially transmitting a first digital signal from said controller to said plurality of transponders representative of a possible first bit of said n-bit digital address of said plurality of transponders; responsively transmitting a signal from a first subset of said plurality of transponders having said possible first bit as said first bit of its n-bit digital address to said controller, said non-responsively transmitting transponders alternatively entering a reset state; nextly transmitting a next digital signal from said controller to a responding plurality of transponders representative of a possible next bit of said n-bit digital address of said first subset of said plurality of transponders; responsively transmitting a signal from a second subset of said first subset of transponders having said possible next bit as said next bit of its n-bit digital address to said controller, said non-responsively transmitting transponders alternatively entering a reset state; and alternatively transmitting additional next digital signals from said controller to said plurality of transponders representative of possible additional next bits of said n-bit digital address of said responsively transmitting transponders until said digital signals transmitted from said controller to said plurality of transponders representative of said possible first, next and additional next bits of said n-bit address correspond witch said first, next and additional next bits of said n-bit address of said selected subset of said plurality of transponders.

이 특허를 인용한 특허 (93)

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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
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연합인증

System and method for initiating communications between a controller and a selected subset of multiple transponders in a 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (93)

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연합인증

System and method for initiating communications between a controller and a selected subset of multiple transponders in a 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (93)

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