Recording and reproducing data to/from a recording medium having a user data area and an information area for storing information about the recording medium
View Patent ↗If a large minimum data unit for recorded data is used to record a small data amount of management information, the recording time is long, and furthermore when a WO (write once) is used as the recording medium, the number of recording operations is restricted. To solve the above problems, the present invention records data in a management area in units smaller than ordinary units for recorded data to suitably record information in a limited management area and thereby efficiently use the user data area. At that time, the present invention simplifies interleave processing usually applied to ordinary recorded data, and performs the simplified interleave processing on a data structure (for data of small size) of the present invention so as to ensure the signal processing compatibility between the ordinary data and data having the data structure according to the present invention.
1. A recording method for recording data on a recording medium, comprising the steps of:
recording data to a DVD having a management area and a user data area,
recording data to a higher recording density disc, having a recording density that is higher than a DVD, having a management area and a user data area;
when recording data to the higher recording density disc,
recording data on the user data area of the higher recording density disc in units of a second recording block, wherein,
data recorded on the management area of the higher recording density disc are composed of units of a first recording block,
the first recording block comprises data of a bytes,
the second recording block comprises data of b bytes,
b is approximately equal to the integral multiple of a and larger than a, and
information related to the higher recording density disc is recorded on the management area in units of the first recording block;
when recording data to a DVD,
recording data on the user data area of a DVD in units of a third recording block, wherein,
the third recording block comprises data of c bytes, and
b is approximately equal to the integral multiple of c and larger than c.
2. A reproducing method for reproducing data from a recording medium, comprising the steps of:
reproducing data from a DVD having a management area and a user data area,
reproducing data from a higher recording density disc, having a recording density that is higher than a DVD, having a management area and a user data area;
when reproducing data from the higher recording density disc,
demodulating the reproduced data,
correcting the reproduced data based on a first recording block recorded on the management area of the higher recording density disc, and
correcting the reproduced data based on a second recording block recorded on the user data area of the higher recording density disc, wherein
data recorded on the management area of the higher recording density disc are composed of units of the first recording block,
data recorded on the user data area of the higher recording density disc are composed of units of the second recording block,
the first recording block comprises data of a bytes,
the second recording block comprises data of b bytes,
b is approximately equal to the integral multiple of a and larger than a, and
information related to the higher recording density disc is recorded on the management area in units of the first recording block;
when reproducing data from a DVD,
demodulating the reproduced data,
correcting the reproduced data based on a third recording block recorded on the user data area of a DVD, wherein,
data recorded on the user data area of a DVD area composed of units of the third recording block,
the third recording block comprises data of c bytes, and
b is approximately equal to the integral multiple of c and larger than c.