Patent US5428609A successfully refreshed from Google Patents.
US5428609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
STM-to-ATM converters
Assignee: Alcatel Lucent SAS
•
Filing: 1994-01-03
•
Granted: 1995-06-27
•
Expires: 2014-01-03
Abstract
Abstract A data stream is converted from a synchronous transfer mode (STM) to an asynchronous transfer mode (ATM) by extracting data of a number of payload signals from the data stream, writing data of the payload signal into a random access memory (RAM), separately recording address locations of the data of each of the payload signals in separate buffers, directing the RAM to separately read the data of the payload signals, and attaching a cell header to the data read from the RAM to form ATM cells.
Inventors
- 👤 Kai Y. Eng
- 👤 Gary D. Martin
- 👤 Mark A. Pashan
- 👤 Vikram Punj
- 👤 Ronald A. Spanke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:54
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0428; H04Q11/0478; H04J; H04J3/00; H04J3/02; H04J3/06; H04J3/062; H04J3/0632; H04J2203/00; H04J2203/0001; H04J2203/0089; H04L; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5638; H04L2012/5646; H04L2012/5652; H04L2012/5672
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
85 words
The method of processing a data stream in a synchronous transfer mode (STM) comprising: extracting a plurality of payload signals having data from the data stream; writing data of the payload signals into a random access memory (RAM); separately recording address locations of the data of each of the plurality of payload signals; directing the RAM to separately read the data of each single one of the payload signals; and attaching a cell header to the data read from the controller to form ATM cells.
Claim 2
Independent Claim
85 words
The method of processing a data stream in a synchronous transfer mode (STM) comprising: extracting a plurality of payload signals having data from the data stream; writing data of the payload signals into a random access memory (RAM); separately recording address locations of the data of each of the plurality of payload signals; directing the RAM to separately read the data of each single one of the payload signals; and attaching a cell header to the data read from the controller to form ATM cells.
Claim 3
Dependent Claim
19 words
A method as in claim 1, wherein the extracting step includes removing overhead in the synchronous digital hierarchy framing.
Claim 4
Dependent Claim
22 words
A method as in claim 1, wherein the recording step includes recording in a separate buffer for each of said payload signals.
Claim 5
Dependent Claim
23 words
A method as in claim 1, wherein the recording step includes recording in a separate first-in-first-out buffer for each of the payload signals.
Claim 6
Independent Claim
98 words
A system for processing a data stream in a synchronous transfer mode (STM) comprising: means for extracting a plurality of payload signals from the data stream; a random access memory (RAM); means for writing data of the payload signals into said random access memory (RAM); buffer means for recording RAM locations of the data of the payload signal; programmable controller means for directing said RAM to read the data of each single one of the payload signals; and said programmable controller means including means for attaching a cell header to the data read to form an ATM cell.
Claim 7
Independent Claim
98 words
A system for processing a data stream in a synchronous transfer mode (STM) comprising: means for extracting a plurality of payload signals from the data stream; a random access memory (RAM); means for writing data of the payload signals into said random access memory (RAM); buffer means for recording RAM locations of the data of the payload signal; programmable controller means for directing said RAM to read the data of each single one of the payload signals; and said programmable controller means including means for attaching a cell header to the data read to form an ATM cell.
Claim 8
Dependent Claim
30 words
A system as in claim 5, wherein the data stream includes synchronous digital hierarchy framing and said extracting means includes means for removing overhead in the synchronous data hierarchy framing.
Claim 9
Dependent Claim
20 words
A system as in claim 5, wherein the recording means includes a separate buffer for each of the payload signals.
Claim 10
Dependent Claim
19 words
A system as in claim 5, wherein the recording means includes a separate first-in-first-out buffer for the payload signal.
References Cited (Backward Citations)
US5214639A
Cited
US5159591A
Cited
US5341376A
Cited
US5206858A
Cited
US5271004A
Cited
US5144619A
Cited
US5301189A
Cited
US5278828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-06-26 | 1998-12-26 | 1999-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-26 | 2002-12-26 | 2003-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-26 | 2006-12-26 | 2007-06-27 | $7700.00 | Window Closed / Lapsed |