Network control system with improved reliability
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United States of America Patent
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Sep 28, 1993
Issued Date -
N/A
app pub date -
May 7, 1991
filing date -
Jan 30, 1990
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Abstract
A timer manager for use in a network control system of one node of a connectionless communication network provides message receipt reliability. The network control system includes a buffer pool for storing messages to be transmitted from the one node and a data link stage for receiving the buffer pool storage address of a message to be transmitted and causing the message to be accessed and transmitted onto the bus. The timer manager is coupled to the buffer pool and to the data link stage and includes a table including a plurality of entry slots for storing the buffer pool storage address of a message to be transmitted with an associated timer entry index. The timer manager is responsive to an add timer request of the data link stage for locating an available entry slot in the table for a message to be transmitted, obtains the buffer pool storage address of the message from the data link stage, stores the buffer pool storage address in the entry slot, and conveys to the data link stage the index of the entry slot. The timer manager further includes a timer associated with the entry slot and starts the timer responsive to the message being transmitted onto the bus. The timer manager is arranged to convey to the data link stage a time-out message if the timer times a predetermined time period without receiving a receipt acknowledgement.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- JOHNSON CONTROLS TECHNOLOGY COMPANY
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Rasmussen, David E | Wales, WI | 26 | 2785 |
Stark, James K | Wauwatosa, WI | 10 | 1197 |
Woest, Karen L | Wauwatosa, WI | 11 | 1445 |
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Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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