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EP0085437A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Monitor for transmission line

Assignee: NEC Corp
•
Filing: 1983-02-03
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Granted: —
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Expires: 2003-02-03
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Abstract

Abstract in a network system at least one data communication unit and a transmission line monitoring device are interconnected by a common transmission line. In order to detect transmission faults the monitoring device comprises means for exchanging data with a specific data transmission unit via the common transmission line and means for receiving status information fed from the data transmission unit. A storage means stores the status information fed from the data transmission unit and a comparator means compares the status information of the data transmission unit stored in the storage means with new status information returned from the data transmission unit. The new status information is displayed on a display means in response to the result of comparison at the comparator means. The new status information is then written into the storage means.

Inventors

  • 👤 Sumio Yamamoto

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 22:37
CPC Classifications
H; H04; H04L; H04L43/00; H04L43/08; H04L43/0805; H04L43/0817; H04L41/00; H04L41/06; H04L41/069

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 130 words
In a network system wherein at least one data communication unit and a transmission line monitoring device are interconnected by a common transmission line, the monitoring device characterized by comprising: means for exchanging data with a specific data transmission unit via the common transmission line; means for receiving status information fed from said data transmission unit; storage means for storing the status information fed from said data transmission unit; comparator means for comparing said status information of the data transmission unit stored in the storage means with new status information returned from the data transmission unit; display means for displaying the new status information in response to the result of comparison at the comparator means; and status information writing means for writing the new status information in the storage means.

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