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EP0097028A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Multiple-microcomputer communications system

Assignee: Fujifilm Business Innovation Corp
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Filing: 1983-06-09
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Granted: —
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Expires: 2003-06-09
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Abstract

Abstract A multiple-microcomputer system in which communication of data between or among various microcomputer subsystems (11) is carried out over a common bus (12) with data temporarily stored in a posting file (19) also coupled to the common bus. Each microcomputer subsystem (11) is provided with a register file (16) where data to be communicated with other ones of the microcomputer subsystems or data received from other ones of the microcomputer subsystems or data received from other ones of the microcomputer subsystems is temporarily stored. Data can be transferred to or from the register files (16) via the common bus (12) by first transferring data into the posting file (19), examining the content of the data stored in the posting file (19), and then transferring the data so stored to the destination microcomputer subsystem.

Inventors

  • 👤 Junichi C/O Fuji Xerox Co. Ltd. Kobayashi
  • 👤 Masato C/O Fuji Xerox Co. Ltd. Nishimoto

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 11:20
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/14; G06F13/36; G06F15/00; G06F15/16; G06F15/163; G06F15/167

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 80 words
A multiple-microcomputer system comprising: a plurality of microcomputer subsystems, each of said microcomputer subsystems comprising a register .file for storing communication data to be transmitted to or received from other ones of said microcomputer subsystems; a common bus linking all of said microcomputer subsystems; and a posting file coupled to said common bus for temporarily storing communication data being transmitted from a register file of one of said microcomputer subsystems to a register file of another of said microcomputer subsystems.
Claim 2
Dependent Claim 80 words
A multiple-microcomputer system comprising: a plurality of microcomputer subsystems, each of said microcomputer subsystems comprising a register .file for storing communication data to be transmitted to or received from other ones of said microcomputer subsystems; a common bus linking all of said microcomputer subsystems; and a posting file coupled to said common bus for temporarily storing communication data being transmitted from a register file of one of said microcomputer subsystems to a register file of another of said microcomputer subsystems.
Claim 3
Dependent Claim 19 words
The multiple-microcomputer system of claim 1, further comprising a further microcomputer for controlling data transfers on said common bus.
Claim 4
Dependent Claim 42 words
The multiple-microcomputer system of claim 1, wherein each of said microcomputer subsystems further comprises an internal bus; a first bus buffer coupling said register file to said internal bus; and a second bus buffer coupling said register file to said common bus.
Claim 5
Dependent Claim 17 words
The multiple-microcomputer system of claim 3, further comprising means for controlling said first and second bus buffers.
Claim 6
Dependent Claim 54 words
The multiple-microcomputer system of claim 4, wherein said means for controlling said first and second bus buffers comprises means for determining whether said register file is in use, and means for permitting transfer of data in or out of said register file only in the case that said register file is not in use.

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