ATM network interface
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United States of America Patent
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Apr 8, 1997
Grant Date -
N/A
app pub date -
Sep 1, 1994
filing date -
Sep 1, 1994
priority date (Note) -
Expired
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Abstract
A novel ATM network provided which includes one or more ATM gateways for interfacing a plurality of T1 or fractional T1 signals with a higher bandwidth ATM network switch. In order to provide high speed and bandwidth utilizing relatively inexpensive and standard components, the data is stored in a memory, such as a video RAM, and pointers are utilized to indicate the type of each piece of data stored in the memory, including its priority for transmission to an ATM switch. In one embodiment of this invention, a plurality of pointer pools are used, each corresponding to a data type having a given priority. Pointers are placed into an appropriate one of the pools to define the order in which data will be transferred to the ATM switch in accordance with the priority of the data type and the receiving bandwidth of its destination in the ATM network. In one embodiment an HDLC controller is used which is suitable for framing a plurality of channels of data received on an incoming data path, such as a T1 channel. In order to minimize processing hardware requirements, a single HDLC controller is used to provide appropriate framing of each channel in a multiplexed fashion, with intermediate HDLC states being stored in a temporary state memory for retrieval when the next set of bits for a given channel is received for processing by the HDLC controller. A plurality of buffer memories are used for storing intermediate data corresponding to each of the incoming channels.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- DIGITAL LINK CORPORATION
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Hiekali, Nasser | San Jose, CA | 1 | 99 |
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Fee | Large entity fee | small entity fee | micro entity fee | due date |
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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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