Patent ID: 8009960
Filing Date: 2011-08-30
Classification: G11B,H04N

Abstract:
1. A cyclic video recording method for an optical storage medium, the optical storage medium being divided into multiple sub-zones which are grouped into a set of forward seeking sub-zones SB[ 1 ], SB[ 3 ], SB[ 5 ] . . . SB[NF] and a set of backward seeking sub-zones SB[ 2 ], SB[ 4 ], SB[ 6 ] . . . SB[NB], wherein NF=N−1 and NB=N when N is an even number and NF=N and NB=N−1 when N is an odd number, and the set of forward seeking sub-zones and the set of backward seeking sub-zones are distributed interleavingly, the method comprising the steps of: (A) setting an initial values of current sub-zone and an initial value of flag and performing a write operation, wherein the flag indicates a direction to seek the sub-zones and the initial value of the flag is determined by the initial value of the current sub-zone; (B) determining whether the flag indicates a forward direction, and further determining whether the current sub-zone is not the last sub-zone SB[NF] in the set of forward sub-zones when the flag indicates the forward direction; (C) setting a next sub-zone in the set of forward seeking sub-zones to become the current sub-zone and performing the write operation when the current sub-zone is not the last sub-zone SB[NF] in the set of forward seeking sub-zones, and returning to repeat step (B); (D) setting the flag to a backward direction, setting the last sub-zone SB[NB] in the set of backward seeking sub-zones to become the current sub-zone and performing the write operation when the current sub-zone is the last sub-zone SB[NF] in the set of forward seeking sub-zones, and returning to repeat step (B); (E) determining whether the current sub-zone is not the lowest sub-zone SB[ (F) setting a previous sub-zone in the set of backward seeking sub-zones to become the current sub-zone and performing the write operation when the current sub-zone is not the lowest sub-zone SB[