Patent ID: 6195325
Filing Date: 2001-02-27
Classification: G11B

Abstract:
A data recording apparatus comprising:means for driving a disc-like recording medium having pre-formed thereon data tracks for data recording, the data tracks being wobbled with signals generated by modulating the frequency of a predetermined-frequency carrier correspondingly to an address information;means for recording into the disc-like recording medium being driven to spin a data in sectors each consisting a data block and a linking data next to the data block in such a manner that the linear density of recording is constant;means for calculating a number of bits which are to be recorded into an n-th one of the sectors on the basis of a following expression (1): ##EQU6##whereF: Write frequency, HzN: Spinning speed of the recording medium, s.sup.-1R.sub.0 : Radius of innermost data track on which the bits are to be recorded, mP: Track pitch of data tracks, mL: Physical circumferential length of each sector, m; andmeans for controlling the recording means so that the data is recorded in a number of bits having been calculated by the calculating means into each sector.