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Optical disk and a recording/reproduction apparatus using multiple address block groups shifted oppositely with multiple address blocks and non-pit data

Imported: 23 Feb '17 | Published: 22 Oct '02

Yoshinari Takemura, Shigeru Furumiya, Takashi Ishida, Yoshito Aoki, Shunji Ohara, Yuichi Kamioka, Toyoji Gushima

USPTO - Utility Patents

Abstract

Address groups are composed of two of address blocks

16, 17, 18, and

19, where the address blocks

16, 17, 18, and

19 are disposed in a sector address region

5 and include identifiable information of address numbers

13 and overlapping sequential numbers

14. The address groups are disposed so that each group is alternately shifted from a track center

2 toward the inner periphery side or the outer periphery side, by a width substantially equal to half the track pitch, along the radius direction.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic view showing an optical disk according to Example 1.

FIG. 2 is a diagram illustrating the format of sector addresses.

FIG. 3A is a diagram showing a portion of a data region and a sector address region.

FIG. 3B is a diagram illustrating an RF signal and a TE signal in a sector address region.

FIG. 4A is a diagram illustrating a tracking offset of a light spot and an RF signal.

FIG. 4B is a diagram illustrating a tracking offset of a light spot and an RF signal.

FIG. 5A is a diagram showing the arrangement of address blocks according to Example 2.

FIG. 5B is a diagram showing the arrangement of address blocks according to Example 2.

FIG. 6A is a diagram showing the arrangement of address blocks according to Example 3.

FIG. 6B is a diagram showing the arrangement of address blocks according to Example 3.

FIG. 7A is a schematic diagram illustrating continuous pits in address groups.

FIG. 7B is a schematic diagram illustrating continuous pits in address groups.

FIG. 8A is a diagram illustrating a reading operation for pits in the case where a light spot is reproducing a land track.

FIG. 8B is a diagram illustrating a reading operation for pits in the case where a light spot is reproducing a land track.

FIG. 9A shows an exemplary data waveform.

FIG. 9B shows an exemplary data waveform.

FIG. 9C shows an exemplary data waveform.

FIG. 9D shows an exemplary data waveform.

FIG. 10 is diagram illustrating data arrangement within an address block.

FIG. 11 is a diagram showing an exemplary case where address numbers are added to sector addresses.

FIG. 12 is a block diagram showing an exemplary optical disk recording/reproduction apparatus.

FIG. 13 is a block diagram showing an address correction section.

FIG. 14 is a block diagram showing an exemplary optical disk recording/reproduction apparatus.

FIG. 15A is a schematic diagram showing the change in a tracking error signal (TE signal) in response to off-tracking in a sector address region

5.

FIG. 15B is a diagram showing a TE signal in the case where the. spot proceeds as (a) on a track

2.

FIG. 15C is a diagram showing a TE signal in the case where the spot proceeds as (b) on a track

2.

FIG. 15D is a diagram showing a TE signal in the case where the spot proceeds as (c) on a track

2.

FIG. 16A is a diagram showing a portion of a data region and a sector address region.

FIG. 16B is a diagram of a timing chart illustrating the generation of gate signals in a timing generation section.

FIG. 16C is a diagram of a timing chart illustrating the generation of gate signals in a timing generation section.

FIG. 17 is a block diagram showing an optical disk recording/reproduction apparatus according to Example 8.

FIG. 18 is a block diagram showing an optical disk recording/reproduction apparatus including an ID detection circuit.

FIG. 19A is a diagram showing an ID section which is disposed in a symmetrical manner in a middle position between a land and a groove.

FIG. 19B is a diagram showing a tracking error signal obtained when scanning with a light beam.

FIG. 19C is diagram showing a signal obtained after a tracking error signal has passed through a high pass filter.

FIG. 19D is a diagram showing a signal obtained by applying full-wave rectification with a full-wave rectifier to a signal which has passed through a high pass filter.

FIG. 19E is a diagram showing a signal obtained after a full-wave rectified signal has passed through a first low pass filter.

FIG. 19F is a diagram showing a signal which has passed through second and third low pass filters.

FIG. 19G is a diagram showing an envelope signal in an ID section.

FIG. 19H is a diagram showing a polarity signal.

FIG. 20A is a diagram showing an ID section which is disposed in a symmetrical manner in a middle position between a land and a groove.

FIG. 20B is a diagram showing a tracking error signal obtained when scanning with a light beam.

FIG. 20C is diagram showing a signal obtained after a tracking error signal has passed through a high pass filter.

FIG. 20D is a diagram showing a signal obtained by applying full-wave rectification with a full-wave rectifier to a signal which has passed through a high pass filter.

FIG. 20E is a diagram showing a signal obtained after a full-wave rectified signal has passed through a first low pass filter.

FIG. 20F is a diagram showing a signal which has passed through second and third low pass filters.

FIG. 20G is a diagram showing an envelope signal in an ID section.

FIG. 20H is a diagram showing a polarity signal.

FIG. 21 is a diagram showing a logic circuit.

FIG. 22 is a diagram showing an exemplary optical disk of a land-groove recording type.

FIG. 23 is a diagram showing the track structure of a recording/reproduction optical disk.

FIG. 24 is a schematic diagram showing a conventional sector address.

FIG. 25 is a block diagram showing a conventional optical disk recording/reproduction apparatus.

FIG. 26 is a diagram illustrating an RF signal and a TE signal in a conventional example.

Claims

1. An optical disk comprising a land track and a groove track, wherein each of the land track and the groove track includes a plurality of sectors, each of the plurality of sectors includes a sector address region and a data region, and the sector address region includes a plurality of address blocks,

2. An optical disk recording/reproduction apparatus for an optical comprising a land track and a groove track, wherein each of the land track and the groove track includes a plurality of sectors, each of the plurality of sectors includes a sector address region and a data region, and the sector address region includes a plurality of address blocks,

3. An optical disk comprising a land track and a groove track, wherein each of the land track and the groove track includes a plurality of sectors, each of the plurality of sectors includes a sector address region and a data region, and the sector address region includes a plurality of address blocks,

4. An optical disk recording/reproduction apparatus for an optical disk comprising a land track and a groove track, wherein each of the land track and the groove track includes a plurality of sectors, each of the plurality of sectors includes a sector address region and a data region, and the sector address region includes a plurality of address blocks,