JP2011134372A5 - Device and method - Google Patents

Claims (7)

A plurality of reproducing elements arranged in the width direction of the track, the burst signal recorded in each of the tracks, as well as reproduced by the plurality of playback devices located on the track, in the width direction of the track A reproduction head that simultaneously reproduces a plurality of data signals recorded in each of the formed data tracks by two or more reproduction elements positioned on the data tracks;
A position shift amount calculation unit which calculates the position shift amount of the reproducing head with respect to the center of the track at the time of signal reproduction from the burst signal recorded in the track;
At the same time the reproduction from the position error corresponding to the displacement amount of the reproducing head, and determining the positional relationship between the data tracks and the two or more playback elements positioned on the data track, for each of said data track based on the determine the constant results An output value calculator configured to perform weighting and combining of the data signals to calculate an output value of the data track;
Provided with, equipment. A recording head having a plurality of recording elements arranged in the width direction of the track, and recording data signals in a shingled manner so as to form the plurality of data tracks in the width direction of the one track;
A position shift amount storage unit for storing the position shift amount of the recording head;
The positional deviation amount calculation unit calculates the positional deviation amount of the recording head with respect to the center of the track at the time of signal recording from the burst signal recorded in the track,
The positional deviation amount storage unit stores the positional deviation amount of the recording head in association with a logical address indicating a signal recording destination,
The output value calculation unit, when reproducing a signal, uses two or more reproduction elements positioned on the data track based on a position error corresponding to a difference between positional deviation amounts of the reproduction head and the recording head at the same logical address. wherein determining the positional relationship between the data tracks, the judgment result the data signal reproduced simultaneously for each of the data tracks on the basis of the weighted synthesis to calculate the output value of said data tracks, instrumentation of claim 1 Place. The positional shift amount calculating unit, taking into account the offset of the data track and the track at the time of signal recording, and calculates the positional shift amount of the recording head with respect to the center of the track, equipment according to claim 2. When it is determined that one of the two or more reproducing elements is located in the data track, and the other reproducing element is located on an edge of the data track, the output value calculator may be located in the data track. the data signal reproduced by said reproducing element positioned to calculate the output value of the data track weighted than the data signal reproduced by the other playback device, any one of the preceding claims equipment described. Wherein the output value calculating unit, when the two or more playback devices are determined to be located in the data track, which in the two or more playback devices, reproduced by the reproducing element located on the inner circumferential side of the disk medium a data signal, and weighted than the data signal reproduced by other reproduction device calculates the output value of the data track, equipment according to any one of claims 1 to 4. The positional deviation amount calculation unit, and the burst signal reproduced by one or more playback elements positioned on one side with respect to the center of the track, played by one or more playback elements positioned on the other side based on the ratio of the burst signal, calculates the position displacement amount of the reproducing head, equipment according to any one of claims 1 to 5. A step of reproducing with a reproducing head having a plurality of reproducing elements arranged in the width direction of the track, the burst signal recorded in each of the tracks, in the plurality of read element positioned on the track,
Simultaneously reproducing, using two or more reproduction elements positioned on the data track, data signals recorded for each of a plurality of data tracks formed in the width direction of one track using the reproduction head;
Calculating an amount of positional deviation of the reproducing head with respect to the center of the track at the time of signal reproduction from the burst signal recorded in the track;
At the same time the reproduction from the position error corresponding to the displacement amount of the reproducing head, and determining the positional relationship between the data tracks and the two or more playback elements positioned on the data track, for each of said data track based on the determine the constant results Weighting combining of the data signals to calculate an output value of the data track;
Provided with, METHODS.