Patent US2695434A successfully refreshed from Google Patents.
EP0104796A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Four way selector switch for a five port module as a node in an asynchronous speed independent network of concurrent processors
Assignee: Unisys Corp
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Filing: 1983-09-01
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Granted: —
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Expires: 2003-09-01
Abstract
Abstract A four way arbiter switch for a five port module as a node in a asynchronous speed speed independent network of concurrent processors, each port of the module including an input selector switch and an output selector switch such that each selector switch has a plurality of output channels one for each of the output arbiter switches (except the arbiter switch associated with its own port). Each selector switch is adapted to select a particular output channel (arbiter switch) according to the initial bits received in the asynchronous speed independent message. In this manner, the module of the present invention can accommodate up to five simultaneous asynchronous message transmissions without nodal blocking although the average number of simultaneous messages that can be accommodated will be less. The respective arbiter and selector switches are provided with circuitry to respond to a clear signal that resets the corresponding arbiter and selector switches forming a particular transmission path should nodal blocking occur.
Inventors
- 👤 Jesse Rudolph Wilson
- 👤 Gary Lee Logsdon
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 20:20
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4004; G06F13/4022; G06F13/14; G06F15/00; G06F15/76; G06F15/80
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
71 words
An arbitration switch for receiving data signals from a number of different sources in a digital communication network and transmitting those signals to a destination, said number being greater than two, said switch comprising: a number of input ports one for each of said number of different sources to receive the respective data signals and select the first set of data signals to be received for subsequent transmission to said destination
Claim 2
Dependent Claim
71 words
An arbitration switch for receiving data signals from a number of different sources in a digital communication network and transmitting those signals to a destination, said number being greater than two, said switch comprising: a number of input ports one for each of said number of different sources to receive the respective data signals and select the first set of data signals to be received for subsequent transmission to said destination
Claim 3
Dependent Claim
73 words
An arbitration switch according to Claim 1 which is further adapted to receive a clear signal from any one of said number of different sources, said arbitration switch further comprising: a clear circuit means to receive a clear signal from one of said number of differnt sources, said clear circuit means being coupled to said input ports and to said artbitration circuit means to reset said input ports and said arbitration circuit means.
Claim 4
Dependent Claim
46 words
An arbitration switch according to Claim 1 further including: an output port coupled to each of said input ports and to said arbitration means to receive data signals from the input port selected by said arbitration circuit means and to transmit said signals to said destination.
Claim 5
Dependent Claim
52 words
An arbitration circuit according to Claim 1 wherein: said input ports and said output port include consensus gate means having a plurality of inputs and an output, said consensus gate means changing its output from one state to the other only when all of its inputs have changed to said other state.
Claim 6
Dependent Claim
30 words
An arbitration switch according to Claim 4 wherein: said consensus gate means include latch circuits which retain the previous data until such time as all the inputs have changed state.
Claim 7
Dependent Claim
143 words
An arbitration switch for receiving data signals and a clear signal from a number of different sources in the digital communication network and transmitting those signals to a destination, said number being greater than two, said switch comprising: a number of input ports one for each of said number of different sources to receive the respective data signals and clear signal from each of said different sources; an arbitration means coupled to said respective input ports to receive said respective data signals and to select the first set of data signals to be received from subsequent transmission to said destination; clear circuit means to receive a clear signal from one of said differnet sources, said clear circuit means; and clear acknowledgment means coupled to said sources and adapted to signal a source sending a clear signal that the clear signal has been received.
Claim 8
Dependent Claim
143 words
An arbitration switch for receiving data signals and a clear signal from a number of different sources in the digital communication network and transmitting those signals to a destination, said number being greater than two, said switch comprising: a number of input ports one for each of said number of different sources to receive the respective data signals and clear signal from each of said different sources; an arbitration means coupled to said respective input ports to receive said respective data signals and to select the first set of data signals to be received from subsequent transmission to said destination; clear circuit means to receive a clear signal from one of said differnet sources, said clear circuit means; and clear acknowledgment means coupled to said sources and adapted to signal a source sending a clear signal that the clear signal has been received.
Claim 9
Dependent Claim
49 words
An arbitration switch according to Claim 6 further including: an output port coupled to each of said input ports and said arbitration means to receive data signals and said clear signal from the input port selected by said arbitration circuit means and to transmit said signals to said destination.
Claim 10
Dependent Claim
52 words
An arbitration switch according to Claim 6 wherein: said input ports and said output port include consensus gate means having a plurality of inputs and an output, said consensus gate means changing its output from one state to the other only when all of its inputs have changed to said other state.
Claim 11
Dependent Claim
31 words
An arbitration switch according to Claim 8 wherein: said consensus gate means include latch circuits which retain their previous state until such time as all inputs have changed to another state.
Claim 12
Dependent Claim
28 words
An arbitration switch according to Claim 8 wherein: said input port consensus gate means are . adapted to respond to a signal transmission from one state to another.
References Cited (Backward Citations)
No citation records indexed.
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