[특허]Method of polling to determine service needs and the like

Method of polling to determine service needs and the like 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-003/02
출원번호	US-0499971 (1990-03-27)
발명자 / 주소	Heffner III Horace W. (P.O. Box 325 Palmer AK 99645)
인용정보	피인용 횟수 : 143 인용 특허 : 0

초록 ▼

Tis method provides high utilization collision free access to a digital pulse communications medium with priority provided by message class and/or terminal type, regardless of network topology. This is accomplished by utilizing a controller which broadcasts a series of polling frames to all terminals, the response to each of which is a single bit (pulse) from any terminal remaining eligible to respond. All responses to a poll are logically OR\ed by the network to provide a combined response frame at the controller, thus making the process ambivalent to collisions. A polling frame and associated response frame, called a polling cycle, determines one digit of a selected address. A terminal not selected in a given cycle is blocked from responding further, until its high order digit(s) are again selected. Each polling cycle is therefore context sensitive, thus maximizing the information flow per poll and minimizing data flow and network travel time per terminal selection. Each polling frame specifies the value of the address digit being tested, thereby giving the controller complete control of priority of network addresses to receive service. To provide priority by message class, the additional message class bits are prefixed to each terminal address, providing a unique address for each terminal/message class combination. Each terminal is then free to modify the prefix of its own address to specify message priority.

대표청구항 ▼

A polling method for a two way communication system comprised of a controller and a multiplicity of terminals, each said terminal having a unique binary address code of a common length of at least two bits, and said terminals having the capability of detecting and responding to codes sent from said controller, the terminal responses being binary codes which are observed by said controller as a single combined response code, said single combined response code being equivalent to the result of combining all said responses through logical summing, the objective of said polling method being the selection of an address of a terminal requiring service by storing the selected address in a work area in said controller and having the terminal with said selected address able to determine it has been selected, said controller including means to determine at any stage of the polling process a preferred value of a digit of said selected address, said polling method comprising the steps of: a) having said controller establish a pointer designating a polled for digit, said polled for digit designated initially as the first digit of said terminal addresses and having said controller notify each of said terminals that a polling sequence is beginning, each terminal requiring service at the tome of the notification of polling sequence start being eligible to respond to future polls of said polling sequence, other terminals being ineligible to respond during said polling sequence; b) having said controller broadcast at least one query poll to all terminals, said poll corresponding to said polled for digit of the address and said poll identifying said preferred value of said polled for digit; c) having a simultaneous response from each said terminal still eligible to respond which has in said polled for digit of its address said preferred value, these terminals being called responding terminals; d) having said controller wait for said single combined response code from said responding terminals, said single combined response code being affirmative if any terminal responded, negative otherwise; e) having said controller store in said polled for digit of said work area representing said selected address said preferred value if said single combined response code is affirmative, the opposite of said preferred value otherwise, this value being called a selected value of the polled for digit; f) having said controller establish the next digit as the polled for digit and repeating steps b through e with said query poll of step b indicating said selected value of the polled for digit most recently determined in step e, any said eligible terminal becoming ineligible to respond further in said current polling sequence if said eligible terminal does not have said selected value of the polled for digit in said polled for digit most recently determined in step e; g) repeating step f until each digit of said addresses of said common address length has been polled and said selected values stored in said work area, so a complete address is stored in said work area; h) having the controller with a query poll indicate said selected value of the polled for digit most recently determined in step e, which is the last digit to be selected; i) having respond the one terminal still eligible to respond which has in said polled for digit of its address said selected value of the digit most recently determined in step e, this terminal being the single terminal that corresponds to said complete stored address and is therefore notified of its selection by virture of its response, and said complete address identifies said terminal requiring service, otherwise, if there is no response to the poll of step h, no terminal requires service.

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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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Method of polling to determine service needs and the like 원문보기

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