IT1137932B - Arbitration controller for telephone exchange - Google Patents

Arbitration controller for telephone exchange

Info

Publication number
IT1137932B
IT1137932B IT22560/81A IT2256081A IT1137932B IT 1137932 B IT1137932 B IT 1137932B IT 22560/81 A IT22560/81 A IT 22560/81A IT 2256081 A IT2256081 A IT 2256081A IT 1137932 B IT1137932 B IT 1137932B
Authority
IT
Italy
Prior art keywords
circuits
arbitration
access
initialisation
signal
Prior art date
Application number
IT22560/81A
Other languages
Italian (it)
Other versions
IT8122560A0 (en
Inventor
Joseph A Comfort
Thomas J Perry
Michel Loos
Original Assignee
Gte Automatic Electric Lab Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US06/163,045 external-priority patent/US4374413A/en
Priority claimed from US06/163,046 external-priority patent/US4374414A/en
Application filed by Gte Automatic Electric Lab Inc filed Critical Gte Automatic Electric Lab Inc
Publication of IT8122560A0 publication Critical patent/IT8122560A0/en
Application granted granted Critical
Publication of IT1137932B publication Critical patent/IT1137932B/en

Links

Landscapes

  • Exchange Systems With Centralized Control (AREA)

Abstract

The appts. is used in a telephone switching system where a number of microprocessors require access to a common resource. An arbitrating system resolves the conflicting requests where this access is requested simultaneously. The arbitration controller comprises a number of circuits which are connected by data busses to the common resource. Initialisation units are connected to the arbitration circuits and groups of arbitration circuits are interconnected by data busses to form looped systems. The looped systems propagate data in synchronism with signals from the initialisation circuits. The arbitration circuits of each group operate simultaneously when a demand signal is issued. These transmit a signal to the active CPU which issues a selection signal to operate the switching circuits to give access to the chosen microprocessor.
IT22560/81A 1980-06-26 1981-06-25 Arbitration controller for telephone exchange IT1137932B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/163,045 US4374413A (en) 1980-06-26 1980-06-26 Arbitration controller providing for access of a common resource by a plurality of central processing units
US06/163,046 US4374414A (en) 1980-06-26 1980-06-26 Arbitration controller providing for access of a common resource by a duplex plurality of central processing units

Publications (2)

Publication Number Publication Date
IT8122560A0 IT8122560A0 (en) 1981-06-25
IT1137932B true IT1137932B (en) 1986-09-10

Family

ID=26859294

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22560/81A IT1137932B (en) 1980-06-26 1981-06-25 Arbitration controller for telephone exchange

Country Status (1)

Country Link
IT (1) IT1137932B (en)

Also Published As

Publication number Publication date
IT8122560A0 (en) 1981-06-25

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