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US6052819A
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System and method for detecting correcting and discarding corrupted data packets in a cable data delivery system
Assignee: Cisco Technology Inc
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Filing: 1997-04-11
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Granted: 2000-04-18
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Expires: 2017-04-11
Abstract
Abstract A method for transporting digital data from a sender to a receiver in a system where the digital data is broken into data packets for transmission over radio frequency channels, each data packet including forward error-correcting code, the method comprising the steps of receiving the data packets at the receiver; reconstructing the data packets to the digital data, the forward error-correcting code for fixing corrupted data packets; and halting the data packet reconstructing step if a data packet is uncorrectable.
Inventors
- 👤 James E Barker
- 👤 Roy A. Bowcutt
- 👤 Scott E. Hrastar
- 👤 Todd A. Merrill
- 👤 David A. Sedacca
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:44
CPC Classifications
H; H04; H04H; H04H20/00; H04H20/65; H04H20/76; H04H20/77; H04H20/78; H04H20/79; H04L; H04L12/00; H04L12/28; H04L12/2801; H04L12/2854; H04L12/2856; H04L12/2863; H04L12/2869; H04L12/287; H04L12/2872; H04L12/2874; H04L12/54; H04L12/56; H04L12/5691; H04L12/5692; H04L41/00; H04L41/02; H04L41/0213; H04L41/06; H04L41/0654; H04L41/0663; H04L41/0677; H04L61/00; H04L61/50; H04L61/5007; H04L61/5014; H04L61/5061; H04L63/00; H04L63/08; H04L69/00; H04L69/40; H04L9/00; H04L9/40; H04N; H04N21/00; H04N21/20; H04N21/25; H04N21/258; H04N21/25808; H04N21/25816; H04N21/40; H04N21/41; H04N21/426; H04N21/42676; H04N21/60; H04N21/61; H04N21/6106; H04N21/6118; H04N21/6156; H04N21/6168; H04N7/00; H04N7/16; H04N7/173; H04N7/17309; H04H60/00; H04H60/76; H04H60/81; H04H60/82; H04H60/83; H04H60/84; H04L2101/00; H04L2101/60; H04L2101/604; H04L2101/618; H04L2101/622
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
80 words
A method for transporting digital data from a sender to a receiver in a system where the digital data is broken into data packets for transmission over radio frequency channels, each data packet including forward error-correcting code, the method comprising the steps of: receiving the data packets at the receiver; reconstructing the data packets to the digital data, said forward error-correcting code for fixing corrupted data packets; and halting the data packet reconstructing step if a data packet is uncorrectable.
Claim 2
Independent Claim
80 words
A method for transporting digital data from a sender to a receiver in a system where the digital data is broken into data packets for transmission over radio frequency channels, each data packet including forward error-correcting code, the method comprising the steps of: receiving the data packets at the receiver; reconstructing the data packets to the digital data, said forward error-correcting code for fixing corrupted data packets; and halting the data packet reconstructing step if a data packet is uncorrectable.
Claim 3
Dependent Claim
18 words
The method of claim 1, wherein the data packets are modulated for transmission over the radio frequency channels.
Claim 4
Dependent Claim
18 words
The method of claim 2, wherein the receiving step further comprises the step of demodulating the data packets.
Claim 5
Dependent Claim
26 words
The method of claim 1, wherein the receiving step further comprises the step of tuning one of the radio frequency channels for reading the data packets.
Claim 6
Dependent Claim
21 words
The method of claim 3, wherein the tuning step further comprises the step of reading destination addresses of the data packets.
Claim 7
Dependent Claim
18 words
The method of claim 1, wherein the reconstructing step further comprises the step of decoding the data packets.
Claim 8
Dependent Claim
21 words
The method of claim 1, wherein the reconstructing step further comprises the step of determining whether the data packets contain errors.
Claim 9
Dependent Claim
32 words
The method of claim 7, wherein the determining step further comprises the steps of storing error free data packets in a packet FIFO and storing error data packets in a fixit FIFO.
Claim 10
Dependent Claim
24 words
The method of claim 8, wherein the reconstructing step further comprises the step of fixing error data packets by using said forward error-correcting code.
Claim 11
Independent Claim
87 words
An apparatus for transporting digital data from a sender to a receiver in a system where the digital data is broken into data packets for transmission over radio frequency channels, each data packet including forward error-correcting code, the apparatus comprising: a tuner for receiving the data packets at the receiver; a decoder for reconstructing the data packets to the digital data, said forward error-correcting code for fixing corrupted data packets; and means for halting said decoder from reconstructing the data packets if a data packet is uncorrectable.
Claim 12
Independent Claim
87 words
An apparatus for transporting digital data from a sender to a receiver in a system where the digital data is broken into data packets for transmission over radio frequency channels, each data packet including forward error-correcting code, the apparatus comprising: a tuner for receiving the data packets at the receiver; a decoder for reconstructing the data packets to the digital data, said forward error-correcting code for fixing corrupted data packets; and means for halting said decoder from reconstructing the data packets if a data packet is uncorrectable.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-04-18 | 2003-10-18 | 2004-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-04-18 | 2007-10-18 | 2008-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-04-18 | 2011-10-18 | 2012-04-18 | $7700.00 | Window Closed / Lapsed |