Optical disk recording device, recording data transmission method, and semiconductor device

A recording data transmission method for an optical disk recording device that records information corresponding to a recording signal onto a recording medium by using laser light, the recording data transmission method comprising:

• generating, from the recording signal, recording pulse information corresponding to a power level of the laser light;
• generating a recording code obtained by encoding the recording pulse information, based on a cyclic code representing each transition of the power level by using a Gray code;
• transmitting the recording code;
• and
• generating a decoded code by decoding the recording code transmitted, by using a recording code corresponding to a power level at a predetermined timing and a recording code corresponding to a power level immediately prior to the power level at the predetermined timing,
• wherein the number of bits of the recoreing code is smaller than a square root of the number of power levels of the laser light.

An optical disk recording device that records information corresponding to a recording signal onto a recording medium by using laser light, the optical disk recording device comprising:

• a recording pulse information generation unit that generates, from the recording signal, recording pulse information corresponding to a power level of the laser light;
• a recording code generation unit that generates a recording code by encoding the recording pulse information;
• a transmission line that transmits the recording code;
• and
• a decoded code generation unit that generates a decoded code by decoding the recording code transmitted,
• wherein the recording code generation unit generates the recording code based on a cyclic code representing each transition of the power level by using a Gray code,
• wherein the decoded code generation unit decodes the recording code using a recording code corresponding to a power level at a predetermined timing and a recording code corresponding to a power level immediately prior to the power level at the predetermined timing, and
• wherein the recording code generation unit is configured to be able to output a continuation code by using the recording code, the continuation code indicating that a preceding power level is continuously output, and
• the decoded code generation unit outputs the decoded code corresponding to the preceding power level upon detection of the continuation code.