# US 11,444,723 B2 · Signal protection

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- Number: US 11,444,723 B2
- Document ID: US11444723B2
- Status: Granted
- Kind: B2
- Application number: 16/877,243
- Filed: 2020-05-18
- Published: 2020-09-03
- Granted: 2022-09-13
- Earliest claimed: 2012-04-03
- Assignees: Nevio AS
- Applicants: Nevion AS
- Inventors: Andrew Rayner
- Web page: https://patentgrep.com/patent/US11444723B2

## CPC

- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- G06F 11/10: Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F 11/2005: {using redundant communication controllers}
- H04L 1/0041: {Arrangements at the transmitter end}
- H04L 1/0045: {Arrangements at the receiver end}
- H04L 1/22: using redundant apparatus to increase reliability
- H04L 1/1867: Arrangements specially adapted for the transmitter end
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A signal protector utilizes a variable latency station to provide error correction.

## Claims

### Claim 1

A data protection method comprising the steps of:
providing an encoder including a transmit buffer between an encoder input and each of a path A transmitter and a path B transmitter;
providing a decoder including a receive buffer between a decoder output and each of a path A receiver and a path B receiver; and,
interconnecting separate data paths A and B between the encoder path A, B transmitters and the decoder path A, B receivers;
transporting a data stream from the encoder to the decoder over path A to supply a decoder data output;
after a data fault, using unfaulted data in a decoder buffer to continue decoder data output without interruption;
transporting corrective data stored in an encoder transmit buffer to the decoder via path B;
continuing an uninterrupted supply of data to the decoder data output using the corrective data and the encoder data stream transported over path B;
data path B does not redundantly propagate the same data values as data path A; and,
bandwidth consumption is limited to a single connection while there are no communications errors.

### Claim 2

A signal protection device comprising:
an encoder including a transmit buffer between an encoder input and each of a path A transmitter and a path B transmitter;
a decoder including a receive buffer between a decoder output and each of a path A receiver and a path B receiver;
data paths A and B that extend between the encoder and the decoder;
data path B does not redundantly propagate the same data values as data path A;
wherein a data fault on data path A causes path B to resend the faulted data while uninterrupted decoder output continues;
an uninterrupted decoder output is a segment of unfaulted path A data; and,
the segment is ahead of faulted path A data and output from the receive buffer.

### Claim 3 (depends on 2)

The signal protection device of claim 2 wherein bandwidth consumption is limited to a single connection while there are no data faults.