US 2017/0250780 A1 · ERROR CORRECTION CIRCUIT AND OPTICAL TRANSMISSION SYSTEM

Abstract

An error correction circuit includes a first error correction circuit, a second error correction circuit and a controller. The first error correction circuit performs an error correction in a first correction scheme. The second error correction circuit performs an error correction in a second correction scheme. A correction performance of the second correction scheme is lower than a correction performance of the first correction scheme. The controller makes the first error correction circuit perform error correction of a received signal when a capacity of the received signal is smaller than or equal to a processing capacity of the first error correction circuit, and makes the first error correction circuit and the second error correction circuit perform error correction of the received signal when the capacity of the received signal is larger than the processing capacity of the first error correction circuit.

Claims10

Dependent claims

An error correction circuit that processes a signal to which an error correction code is added, the error correction circuit comprising:

a first error correction circuit configured to perform an error correction in a first correction scheme;
a second error correction circuit configured to perform an error correction in a second correction scheme, a correction performance of the second correction scheme being lower than a correction performance of the first correction scheme;
and
a controller configured to make the first error correction circuit perform error correction of a received signal when a capacity of the received signal is smaller than or equal to a processing capacity of the first error correction circuit, and make the first error correction circuit and the second error correction circuit perform error correction of the received signal when the capacity of the received signal is larger than the processing capacity of the first error correction circuit.

1 more element

An optical transmission system that includes a first communication device equipped with an error correction code encoder and a second communication device equipped with an error correction code decoder to process a signal received from the first communication device, wherein

the error correction code encoder includes:
a first encoder configured to perform an error correction encoding in a first correction scheme;
a second encoder configured to perform error correction encoding in a second correction scheme, a correction performance of the second correction scheme being lower than a correction performance of the first correction scheme;
and
a first controller configured to make the first encoder perform error correction encoding on a transmission signal transmitted from the first communication device to the second communication device when a capacity of the transmission signal is smaller than or equal to a specified threshold, and make the first encoder and the second encoder perform error correction encoding on the transmission signal when the capacity of the transmission signal is larger than the threshold, and wherein
the error correction code decoder includes:
a first decoder configured to perform error correction in the first correction scheme;
a second decoder configured to perform error correction in the second correction scheme;
and
a second controller configured to make the first decoder perform error correction of the transmission signal when the capacity of the transmission signal is smaller than or equal to the threshold, and make the first decoder and the second decoder perform error correction of the transmission signal when the capacity of the transmission signal is larger than the threshold.

7 more elements

Dependencies are inferred from the claim text.

Error correction circuit and optical transmission system

Life of this patent

Error correction circuit and optical transmission system

Life of this patent

Abstract

Claims10