[특허]Method and apparatus for locating items

Method and apparatus for locating items 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04Q-001/00
출원번호	US-0247182 (1994-05-20)
발명자 / 주소	Verma Vikram (Palo Alto CA) Reis Robert S. (Palo Alto CA) Mihovilovic Domingo A. (Mountain View CA) Keleshian Philip J. (San Jose CA)
출원인 / 주소	Savi Technology, Inc. (Mountain View CA 02)
인용정보	피인용 횟수 : 149 인용 특허 : 0

초록 ▼

A communication system that communicates for locating one or more tags in a time and energy efficient manner. The tags are positioned in a communication region and are located by a locator. The tags are located through organized transmission and reception of signals between the tags and the locator. The locator locates and gives directions to tags from the locator using a radio link and a multi-channel ultrasonic acoustic link. The combination of linkages provides the means to determine the unobstructed bearing and distance between the locator and the tag and resolves multipath reflections.

대표청구항 ▼

A communication system including distance measuring apparatus to determine the distance from a first location to one or more of a plurality of second locations in a communication region comprising: a locator at said first location including; locator acoustic means including locator acoustic transmitter means for transmitting a first acoustic frequency signal commencing at a first time; locator memory for storing locator sequencing code including a broadcast command and a directed command; locator processor means connected for accessing said locator memory and for processing said locator sequencing code to sequence said broadcast command and said directed command; locator radio transceiver means connected to said locator processor means for sending and receiving communications in said communication region over a common radio frequency communication channel including sending said broadcast command and said directed command and including sending a locator radio frequency signal to identify said first time; a plurality of tags, each of said tags at one of said second locations and each including, a tag memory for storing information including tag sequencing code; a tag transceiver for sending and receiving radio frequency communications to and from said locator radio transceiver means over said common communication channel, for receiving said locator radio frequency signal and for indicating a tag representation of said first time when said locator radio frequency signal is received, and for sending a radio frequency tag signal to said locator radio transceiver means; tag acoustic means including tag acoustic receiver means for receiving said first acoustic frequency signal at a second time, wherein the second time is delayed after the first time the duration of the transmission time of said acoustic frequency signal from said first location to said second location; a tag processor, connected to said tag transceiver to receive said broadcast command and said directed command, said tag processor including means for processing said tag sequencing code to send a response to said locator through said tag transceiver, difference determining means for determining the time difference between said tag representation of said first time and said second time to provide a time difference measurement, and means for processing said tag sequencing code to cause said tag transceiver to send said time difference measurement to said locator as said radio frequency tag signal in response to receipt of said directed command whereby the distance between the first location and the second location is determined as a function of said time difference measurement.

이 특허를 인용한 특허 (149)

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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

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