Multiplex communications – Wide area network – Packet switching
Patent
1990-08-10
1992-11-10
Safourek, Benedict V.
Multiplex communications
Wide area network
Packet switching
370 60, H04J 326
Patent
active
051630494
ABSTRACT:
An improved distributed processing system for controlling the transfer of data between a terminal controller and a subsystem is described where the improvement insures wordstring consistency in a manner which is completely transparent to the subscriber subsystem. In particular, data is transferred, via a dual-bank, dual-port terminal memory where the bank selection is controlled such that any wordstring transfers between the terminal memory and the terminal controller are constrained to involve a different bank than transfers between the terminal memory and its associated subscriber subsystem. A wordstring log associated with control arbitration logic contains the dynamic state of the bank assignments for each wordstring. Two flag bits in the wordstring log provide information to the control/arbitration logic, allowing it to manage the bank selection of the terminal memory.
REFERENCES:
patent: 4354263 (1982-10-01), Bordry et al.
patent: 4601586 (1986-07-01), Bahr et al.
patent: 4638477 (1987-01-01), Okada et al.
patent: 4777595 (1988-10-01), Strecker et al.
patent: 4933846 (1990-06-01), Humphrey et al.
Smith Clarence S.
Yount Larry J.
Honeywell Inc.
Hsu Alpus H.
Jepsen Dale E.
Lenkszus Donald
Safourek Benedict V.
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