Error correction device and error correction method

An error correction device comprising:

• an error correction circuit configured to repeatedly perform calculation of error correction on a target frame, based on soft decision information, an upper limit value of a number of times of calculation of the repeatedly performed calculation being set;
• a first detection circuit configured to detect quality of a target frame;
• and
• a specification circuit configured to specify an upper limit value that corresponds to the quality detected by the first detection circuit, based on a correspondence table in which the quality and the upper limit value that decreases according to deterioration of the quality are associated with each other for each quality, and set the specified upper limit value.

An error correction method for an error correction circuit, the error correction method comprising:

• repeatedly performing calculation of error correction on a target frame, based on soft decision information, an upper limit value of a number of times of calculation of the repeatedly performed calculation being set;
• counting a number of times of repetition of the calculation of the error correction for each frame, and obtaining a sum of numbers of times of repetition of a plurality of past frames;
• and
• setting the upper limit value so as to be a value that corresponds to the sum of the numbers of times of repetition and to be a smaller value as the sum of the numbers of times of repetition is greater.