Patent
Local area network with self assigned address method
Gursharan S. Sidhu,Alan B. Oppenheimer,Lawrence A. Kenyon,Ronald R Hochsprung +3 more
- 11 Mar 1986
126
TL;DR: In this article, a local area network is disclosed including apparatus and methods for transferring data between a plurality of data processing resources ("agents") coupled to a cable, and a three-step handshake is used to send data to a receiving agent.
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Abstract: A local area network is disclosed including apparatus and methods for transferring data between a plurality of data processing resources ("agents") coupled to a cable. In the preferred embodiment, a plurality of agents are coupled to a common cable for data transmission and reception. An agent newly coupled to the cable dynamically assigns itself a unique address on the cable to which other agents may send data. Once an agent has been assigned a final address, it may then transmit to, and receive data from, other agents on the cable. An agent desiring to send data to a receiving agent follows a three step handshake, wherein the sending agent transmits an "RTS" signal and within a predetermined time must receive a "CTS" signal from the receiving agent. The sending agent then transmits a data frame within a predetermined time after the CTS signal is received. The failure to detect a return CTS signal within the predetermined time denotes a collision condition. Re-transmission is attempted using a linear back off method which is adjusted based on previous cable traffic history.
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Citations
Patent
Radio frequency local area network
Robert C. Meier
- 01 Oct 1992
TL;DR: In this article, an apparatus and a method for routing data in a radio data communication system having one or more host computers, one/more intermediate base stations, and one/or more RF terminals is presented.
705
Patent
Packet data communication system
Laroy Tymes,John W. Kramer +1 more
- 30 Mar 1994
TL;DR: In this article, a packet data transmission system is used to link a number of remote hand-held data-gathering units such as bar code readers to a central computer which maintains a database management system.
470
Patent
Network supporting roaming, sleeping terminals
Charles D. Gollnick,Ronald E. Luse,John G. Pavek,Marvin L. Sojka,James D. Cnossen,Arvin D. Danielson,Ronald L. Mahany,Mary L. Detweiler,Gary N. Spiess,Guy J. West,Amos D. Young,Robert C. Meier,Keith K. Cargin,Richard C. Arensdorf,Robert G. Geers +14 more
- 29 Jul 2003
TL;DR: In this article, the authors proposed an improved apparatus for a radio communication system having a multiplicity of mobile transceiver units selectively in communication with a plurality of base transceivers which, in turn, communicate with one or more host computers for storage and manipulation of data collected by bar code scanners.
445
Patent
Packet data communication network
Laroy Tymes
- 19 Dec 1990
TL;DR: In this paper, a packet data transmission system is used to link a number of remote hand-held data-gathering units such as bar code readers to a central computer which maintains a database management system.
419
Patent
Process control system using a process control strategy distributed among multiple control elements
Mark Nixon,Robert B. Havekost,Larry O. Jundt,Dennis L Stevenson,Michael G. Ott,Arthur Webb,Michael J Lucas +6 more
- 12 Apr 1996
TL;DR: In this article, a process controller implements an overall, user-developed control strategy in a process control network that includes distributed controller and field devices, such as Fieldbus and non-Fieldbus devices.
333
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Patent
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Abramson C,Nadir M +1 more
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TL;DR: In this paper, a central address distributor is provided which distributes available identifying address codes on the transmission medium in a manner which makes such address codes available to communicating stations for the duration of a link.
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Patent
Bus arrangement for addressing equipment units and a method therefor
Jay Scott Parker,Leo Bernard Koziol +1 more
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TL;DR: In this article, a bus arrangement for providing equipment units with an address is disclosed, where each individual equipment unit achieves its address automatically according to its relative physical position within the organization of the units without the need for setting any switches.
29
Patent
Structure detecting method for circular type transmission system
Masayuki Orimo,Kinji Mori,Shoji Miyamoto +2 more
- 19 Jul 1984
TL;DR: In this paper, the authors proposed a method of automatically checking the overlap of the addresses of the transmission control units in the circular type transmission system or automatically detecting the structure of the system.
14
Patent
Systems for changing addresses of transmission apparatus
Kenta Takumi
- 17 Jul 1984
TL;DR: In this paper, the address changing system comprises a common transmission line, a plurality of transmitting apparatus connected to the common transmission lines, and transmitting means for transmitting a packet frame having destination address fields through the shared transmission line from one to another transmitting apparatus.
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