Digital switch
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United States of America Patent
Stats
-
Nov 23, 1999
Grant Date -
N/A
app pub date -
Oct 7, 1996
filing date -
Oct 10, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A switch fabric is provided which comprises a shared memory, a number of switch fabric ports, and a switch fabric data controller. The switch fabric data controller routes blocks of data received at one switch fabric port to one or more other switch fabric ports and writes and reads data to and from, respectively, the shared memory. The switch fabric data controller preferentially routes a block of data from the one switch fabric port to the one or more other switch fabric ports without writing the block of data into the shared memory if the one or more other desired switch fabric ports are free or become free within a predetermined period, and otherwise writes the block of data into the shared memory for temporary storage if the one or more other switch fabric ports are busy. In this manner, the switch fabric facilitates 'cut-through' of blocks of data across a switch without the need to write the blocks of data to a shared memory, thereby reducing latency.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
| Patent Owner | Address | |
|---|---|---|
| MADGE NETWORKS LIMITED | CHALFONT ST GILES 100 LODGE LANE BUCKINGHAMSHIRE HP8 4AH |
International Classification(s)
Inventor(s)
| Inventor Name | Address | # of filed Patents | Total Citations |
|---|---|---|---|
| Johnson, Stephen Mark | Bucks, GB | 2 | 122 |
| Tout, Arthur James Viggo | Berkshire, GB | 1 | 119 |
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| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| 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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