Data recording method, data recording device, and recording medium

A recording method for a recording medium, comprising the steps of:

• modulation processing data;
• recording said modulation processed data onto a recording medium so that said modulation processed data are readable as optical changes;
• and
• embedding and recording sub data into margin bits of said modulation processed data recorded in a predetermined recording area of said recording medium based on a format corresponding to a type of said recording medium;
• wherein the margin bits are used for adjustment of deviation in a direct current balance of the recorded modulation processed data;
• wherein said modulation processed data has a header portion and data indicating said type of said recording medium is recorded in said header portion.

A recording method for a recording medium, comprising the steps of:

• identifying a type of a loaded recording medium;
• selecting a data format for embedding sub data into modulation processed data recorded on said loaded recording medium based on a result of said identification so that said modulation processed data are readable as optical changes;
• discriminating whether a recording area in which recording is to be performed is a recording area in which said sub data should be embedded;
• and
• embedding and recording said sub data into margin bits of modulation processed data to be recorded in a predetermined area of said recording medium based on said selected data format when it is determined that said recording is to be performed in said recording area in which recording is to be performed based on a result of said discrimination;
• wherein the margin bits are used for adjustment of deviation in a direct current balance of the recorded modulation processed data;
• wherein said modulation processed data has a header portion and data indicating said type of said recording medium is recorded in said header portion.

A recording device for a recording medium, comprising:

• an encoding processing unit for performing recording modulation processing on inputted data and processing to embed sub data into margin bits of said modulation processed data based on a data format selected based on a type of a recording medium to be recorded;
• and
• a head unit supplied with output data from said encoding unit and adapted for performing said recording on said recording medium;
• wherein the margin bits are used for adjustment of deviation in a direct current balance of the recorded modulation processed data;
• wherein said inputted data has a header portion and data indicating said type of said recording medium is recorded in said header portion.

A recording device for a recording medium, comprising:

• a head unit for recording data onto a recording medium so that said data are optically readable, the recording medium having a first recording area in which said data are to be recorded and a second recording area provided at a position to be read prior to said first recording area;
• an encoding processing unit for performing recording modulation processing on inputted data and processing to embed sub data into margin bits of said modulation processed data based on a data format selected based on a type of said recording medium;
• and
• a control unit for controlling said encoding processing unit and said head unit so as to record said modulation processed data to be recorded in said second recording area;
• wherein the margin bits are used for adjustment of deviation in a direct current balance of the recorded modulation processed data;
• wherein said data has a header portion and data indicating said type of said recording medium is recorded in said header portion.