US 6,982,938 B2
Method and apparatus for disc recording
Tatsuya Ishitobi, Kawasaki (Japan); and Hiroaki Ono, Mito (Japan)
Assigned to Hitachi, Ltd., Tokyo (Japan)
Filed on Aug. 30, 2001, as Appl. No. 9/944,466.
Claims priority of application No. 2001-171890 (JP), filed on Jun. 07, 2001.
Prior Publication US 2003/0169657 A1, Sep. 11, 2003
Int. Cl. G11B 5/09 (2006.01)
U.S. Cl. 369—47.31 11 Claims
OG exemplary drawing
 
8. A disc recording apparatus comprising:
a reference clock counter connected to receive and count clock signals reproduced from a plurality of basic recording areas of a disc beginning at a starting point of such basic recording area, the respective basic recording areas reproducing a same number of first clock signals;
an address detector connected to detect an address allocated to the relevant basic recording area and providing it to the reference clock counter for being added to the obtained count;
a write gate generator coupled to receive signals from the reference clock generator and the address detector for detecting a particular basic recording area of the disc and a particular position in a desired basic recording area; and
an encoder/driver coupled to receive user data to be written to the disk and coupled to receive control information from the write gate generator, the address detector and the reference clock counter to control writing to a position in the basic recording area where recording starts, in units of a sub-area obtained by sub-dividing the basic recording area.