Patent ID: 6477313
Filing Date: 2002-11-05
Classification: G11B

Abstract:
A disc control method for recording and playing back first data, second data, and control data on a disc medium, said control data being generated by a CPU (Central Processing Unit) control circuit, wherein said control data contains:a. a number of a first data group, a sector number of the first data group, an offset block number containing second data groups synchronizing with the first data group, and a sequence number of the starting second data group within the offset block; b. the number of a destination first data group after which first data groups to be merged, the number of first data groups to be merged, and the number of the first data group from which first data groups are to be merged, for changing a sequence of first data groups during playback; c. the number of a destination sector after which blocks are to be inserted, the number of blocks to be inserted, and the number of the sector from which blocks are to be inserted, for changing the sequence of blocks during recording; or d. the number of the block containing a destination second data group after which second data groups are to be inserted, the sequence number of the destination second data group within the block, the number of second data groups to be inserted, and the number of the block from which second data groups are to be inserted, for changing the sequence of second data groups during recording, said disc control method comprising the steps of: a. when recording data, (i) reading the control data from the disc when the control data is on the disc; (ii) reading edit data; (iii) editing and recording data on the disc by referencing the control data; and (vi) recording the updated control data on the disc; and b. when playing back data, (i) reading the control data from the disc; (ii) playing back data from the disc according to the control data; and (iii) outputting the data.