[특허]Polling communication system with priority control

Polling communication system with priority control 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G05B-023/00
출원번호	US-0447432 (1989-12-07)
우선권정보	JP-0310100 (1988-12-09)
발명자 / 주소	Tezuka Koji (Kawasaki JPX) Shinomiya Tomohiro (Kawasaki JPX) Amemiya Shigeo (Yokohama JPX) Iguchi Kazuo (Yokohama JPX) Soejima Tetsuo (Tama JPX)
출원인 / 주소	Fujitsu Limited (Kawasaki JPX 03)
인용정보	피인용 횟수 : 45 인용 특허 : 0

초록 ▼

A communication system including a master station, a plurality of slave stations each for communicating with the master station, a two-way transmission line connecting the master station and the plurality of slave stations. Each of the slave stations sends a request for further communication with the master station, to the master station when its own slave station is allowed to communicate with the master station and its own slave station has the above request. The master station detects the request for further communication with the master station in a signal sent from a slave station, and memorizes the slave station from which the request for further communication with the master station is detected, until an allowance signal is sent to the slave station from the master station corresponding to the memorizing of the slave station. The master station has a cyclic address pointer which points to an address of a next one of the slave stations in a cyclic order when no slave station is memorized in the master station. The master station outputs the allowance signal to communicate with the master station to a slave station which is memorized in the master station or to a slave station the address of which is pointed to by the cyclic address pointer when no request is memorized in the master station.

대표청구항 ▼

A communication system, comprising: a master station, a plurality of slave stations each for communicating corresponding data with said master station; and a two-way transmission line connecting said master station and said plurality of slave stations; each of said slave stations includes at least request sending means for sending a request for further communication with said master station appended to the corresponding data sent to said master station when said slave station corresponding thereto receives an allowance signal from said master station and said slave station corresponding thereto has the request for further communication; transmitting means for sending the corresponding data upon reception of the allowance signal; said master station includes at least: request detecting means for detecting the request for further communication with said master station which is appended to the corresponding data sent from one of said slave stations; request memorizing means for memorizing one of said slave stations from which the request for further communication with said master station is detected, until the allowance signal is sent from said master station to the one of said slave stations corresponding to the memorizing of the one of said slave stations; cyclic address pointing means for pointing out an address of a next one of said plurality of slave stations in a cyclic order when no slave station is memorized in said request memorizing means; and select control means for outputting the allowance signal to communicate with said master station either to one of said slave stations read out from said request memorizing means when at least one of said slave stations are memorized in said request memorizing means, or to one of said slave stations the address of which is pointed out by said cyclic address pointing means when no slave station is memorized in said request memorizing means.

이 특허를 인용한 특허 (45)

Ganz Aura ; Ganz Zvi ; Kim Ilwhan, Adaptive media control.
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Ganz,Aura; Ganz,Zvi; Kim,Ilwham, Adaptive media control.
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Hong,Seong seol, Apparatus and method of reducing power consumption using power-save polling list.
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Stuber, Russell B.; Moss, Robert W.; Sluiter, David O., Apparatus for arbitrating non-queued split master devices on a data bus.
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Stuber, Russell B.; Moss, Robert W.; Gilchrist, Alan R., Apparatus for flushing slave transactions from resetting masters of a data bus.
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Cha,Jeong Ho, Communication system and method of non-intrusive performance data polling.
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Cheng Alexander L. (11 Sprindale Ave. White Plains NY 10604), Dynamic channel management and signalling method and apparatus.
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Stuber, Russell B.; Moss, Robert W., Dynamic command buffer for a slave device on a data bus.
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Falls, S. Douglas; Dale, Ernest J.; Matheson, Rod, Electronic product information display system.
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Falls, S. Douglas; Dale, Ernest J.; Matheson, Rod; McPhillips, A. Scott, Electronic product information display system.
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Thompson ; Jr. Darwin O., Fixed site monitor using a location-based communications network.
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Hark C. Chan, Information distribution and processing apparatus being connected to a local display.
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Chan Hark C., Information distribution and processing system.
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Chan Hark C., Information distribution and processing system.
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Chan Hark C., Information distribution and processing system.
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Chan, Hark, Information distribution and processing system.
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Chan, Hark C., Information distribution and processing system.
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Chan, Hark C., Information distribution and processing system.
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Chan, Hark C., Information distribution and processing system.
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Chan, Hark C., Information distribution and processing system.
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Chan, Hark C., Information distribution and processing system.
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Chan, Hark C., Information distribution and processing system.
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Chan, Hark C., Information distribution and processing system.
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Chan, Hark C., Information distribution and processing system.
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Chan,Hark C., Information distribution and processing system.
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Chan,Hark C., Information distribution and processing system.
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Hark C. Chan, Information distribution and processing system.
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Hark C. Chan, Information distribution and processing system.
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Hark C. Chan, Information distribution and processing system.
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Hark C. Chan, Information distribution and processing system.
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Chan Hark, Information distribution system.
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Chan Hark C., Information processing apparatuses for extracting first linkage reference if a second set of displayable set is selected.
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Sierens Christiaan Hendrik Jozef,BEX ; Vandenabeele Peter Michel Noel,BEX ; VanHoof Harry Franciscus Ludovica,BEX ; Venken Kristiaan Johan Hubert Ghislanus,BEX, Log-in method for a telecommunication network, main station and terminal station adapted to perform the method.
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Osada Tomio,JPX, Master-slave data communication system.
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Perreault John A. ; Joshi Abhay ; Kabatepe Mete ; Lloyd Lawrence W. ; Schroeder Stephen, Method and apparatus for a hybrid limited contention and polling protocol.
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Gopal Inder Sarat ; Guerin Roch Andre ; Sivarajan Kumar Nellicherry, Method and system for an efficient multiple access polling protocol for interactive communication.
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Buchholz Dale R. (Palatine IL) Robbins Karen E. (Lake Zurich IL) Hamilton ; Jr. R. Lee (Palatine IL) Doss William K. (Lake in the Hills IL), Method for reducing transmission delays in a packet transmission system.
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Buhler Reiner,DEX ; Dobrich Udo,DEX, Method of operating a data transmission system.
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Perreault John A. ; Joshi Abhay ; Kabatepe Mete ; Lloyd Lawrence W. ; Schroeder Stephen, Method, device and data communication system for multilink polling.
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Watanabe Gaku (Tokyo JPX), Remote monitoring system using a polling level table and a monitored station number table.
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Diehl, Michael, Serial data transmission via a bus system.
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Chan, Hark C., System and method for accessing set of digital data at a remote site.
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Dale, Ernest James; Eichenser, Barbara Clark, System and method for managing compliance with retail display regulations across a plurality of jurisdictions.
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Joshi Abhay ; Kabatepe Mete ; Lloyd Lawrence W. ; Perreault John A. ; Schroeder Stephen, System for determining the frequency of repetitions of polling active stations relative to the polling of inactive stations.
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Eames Thomas R. ; Buckland Kenneth M. ; Trinh Lac X. ; Warwick Steven D., System, method, and apparatus for bidirectional transport of digital data between a digital network and a plurality of d.
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