Optical Disk Image Drawing Method

Abstract

An optical disk image drawing method includes: rotating the optical disk by a spindle motor; reading a predetermined information recorded on a track of a data recording layer; detecting a predetermined position on the track based on the read predetermined information; measuring a position of the spindle motor in a rotating direction using the detected predetermined position as a reference position; changing a focus position of the laser beam to the image drawing layer; starting forming the visible image on the image drawing layer from a predetermined position of the spindle motor in the rotating direction relative to the reference position based on the measured position of the spindle motor in the rotating direction; and sequentially moving an optical pick-up in the radial direction synchronously with the rotation of the spindle motor to proceed to form the visible image.

1 . An optical disk image drawing method of forming a visible image on an optical disk that includes a data recording layer formed with a track and storing predetermined information along the track and an image drawing layer on which the visible image is to be formed and which is formed on the data recording layer, wherein data is capable of being recorded on the data recording layer and visible image is capable of being formed on the image drawing layer by applying a laser beam from one surface side of the optical disk, the method comprising:
 rotating the optical disk by a spindle motor;   focusing a laser beam having a reproducing power outputted from an optical pick-up on the data recording layer and tracking the laser beam on the track of the data recording layer;   reading the predetermined information recorded on the track;   detecting a predetermined position on the track based on the read predetermined information as a reference position in the rotating direction;   measuring a position of the spindle motor in a rotating direction with respect to the reference position;   changing a focus position of the laser beam from the data recording layer to the image drawing layer after the reference position is detected;   starting forming the visible image on the image drawing layer from a predetermined relative position of the spindle motor in the rotating direction with respect to the reference position based on the measured position of the spindle motor in the rotating direction; and   sequentially moving the optical pick-up in the radial direction synchronously with the rotation of the spindle motor to proceed to form the visible image after the forming operation of the visible image is started.   
   
   
       2 . The optical disk image drawing method according to  claim 1 , wherein the position in the rotating direction of the spindle motor with respect to the reference position is measured by counting the number of pulses of FG pulse generated from the spindle motor. 
   
   
       3 . The optical disk image drawing method according to  claim 2 , wherein
 a rotating speed of the spindle motor is controlled to be constant,   a time difference between a detecting timing of a predetermined position on the track and a generating timing of the FG pulse generated adjacently to the detecting timing is measured, and   the position of the spindle motor in the rotating direction is measured while the position of the spindle motor is corrected by an amount of the time difference.   
   
   
       4 . The optical disk image drawing method according to  claim 1 , wherein the visible image is permitted to be formed on the image drawing layer under condition that the optical pick-up detects predetermined disk identifying information, which allows image drawing, from the data recording layer of the optical disk. 
   
   
       5 . The optical disk image drawing method according to  claim 4 , wherein the disk identifying information of the disk is described by any of a sub-code, main data, a specific generation pattern of a CRC error, an ATIP, and ADIP. 
   
   
       6 . The optical disk image drawing method according to  claim 1 , wherein the visible image is permitted to be formed on the image drawing layer under condition that the optical pick-up detects a disk identifying mark, which allows image drawing, formed in an area in an inner periphery side from a data recording area on a disk substrate surface at a side that the data recording layer of the optical disk is arranged or on the data recording layer. 
   
   
       7 . An optical disk image drawing method of forming a visible image on an optical disk that includes a data recording layer formed with a track and storing predetermined information along the track and an image drawing layer on which the visible image is to be formed and which is laminated on the data recording layer, wherein data is capable of being recorded on the data recording layer and visible image is capable of being formed on the image drawing layer by applying a laser beam from a same surface side of the optical disk, the method comprising:
 rotating the optical disk by a spindle motor;   focusing a laser beam having a reproducing power outputted from an optical pick-up on the data recording layer and tracking the laser beam on the track of the data recording layer;   reading the predetermined information recorded on the track;   detecting a predetermined position on the track based on the read predetermined information as a reference position in the rotating direction and in the disk radial direction;   measuring a position of the spindle motor in a rotating direction and a position of the optical pickup in a disk radial direction with respect to the reference position;   changing a focus position of the laser beam from the data recording layer to the image drawing layer after the reference position is detected; and   starting forming the visible image on the image drawing layer from a predetermined relative position of the spindle motor in the rotating direction with respect to the reference position and a predetermined relative position of the optical pickup in the disk radial direction with respect to the reference position based on the measured position of the spindle motor in the rotating direction and the measured position of the optical pickup in the disk radial direction.   
   
   
       8 . The optical disk image drawing method according to  claim 7 , wherein the visible image is permitted to be formed on the image drawing layer under condition that the optical pick-up detects predetermined disk identifying information, which allows image drawing, from the data recording layer of the optical disk. 
   
   
       9 . The optical disk image drawing method according to  claim 8 , wherein the disk identifying information is described by any of a sub-code, main data, a specific generation pattern of a CRC error, an ATIP, and ADIP. 
   
   
       10 . The optical disk image drawing method according to  claim 7 , wherein the visible image is permitted to be formed on the image drawing layer under condition that the optical pick-up detects a disk identifying mark, which allows image drawing, formed in an area in an inner periphery side from a data recording area on a disk substrate surface at a side that the data recording layer of the optical disk is arranged or on the data recording layer. 
   
   
       11 . An optical disk image drawing method of forming a visible image on an optical disk that includes a data recording layer formed with a track and storing predetermined information along the track and an image drawing layer on which the visible image is to be formed and which is laminated on the data recording layer, wherein data is capable of being recorded on the data recording layer and visible image is capable of being formed on the image drawing layer by applying a laser beam from a same surface side of the optical disk, the method comprising:
 rotating the optical disk by a spindle motor;   focusing a laser beam having a reproducing power outputted from an optical pick-up on the data recording layer and tracking the laser beam on the track of the data recording layer;   reading the predetermined information recorded on the track;   detecting a predetermined image drawing operation start position on the track from the read predetermined information;   changing a focus position of the laser beam from the data recording layer to the image drawing layer at a position of the optical pickup in a disk radial direction where the predetermined image drawing operation start position is detected to start forming the visible image on the image drawing layer; and   sequentially moving the optical pick-up in the radial direction synchronously with the rotation of the spindle motor to proceed to form the visible image after the forming operation of the visible image is started.   
   
   
       12 . The optical disk image drawing method according to  claim 11 , wherein the visible image is permitted to be formed on the image drawing layer under condition that the optical pick-up detects predetermined disk identifying information, which allows image drawing, from the data recording layer of the optical disk. 
   
   
       13 . The optical disk image drawing method according to  claim 12 , wherein the disk identifying information is described by any of a sub-code, main data, a specific generation pattern of a CRC error, an ATIP, and ADIP. 
   
   
       14 . The optical disk image drawing method according to  claim 11 , wherein the visible image is permitted to be formed on the image drawing layer under condition that the optical pick-up detects a disk identifying mark, which allows image drawing, formed in an area in an inner periphery side from a data recording area on a disk substrate surface at a side that the data recording layer of the optical disk is arranged or on the data recording layer. 
   
   
       15 . An optical disk image drawing method of forming a visible image on an optical disk that includes a data recording layer formed with a track and storing position information along the track and an image drawing layer on which the visible image is to be formed and which is laminated on the data recording layer, wherein data is capable of being recorded on the data recording layer and visible image is capable of being formed on the image drawing layer by applying a laser beam from a same surface side of the optical disk, the method comprising:
 (a) rotating the optical disk by a spindle motor;   (b) reading the position information recorded on the track by focusing a laser beam having a reproducing power outputted from an optical pick-up on the data recording layer by a focus control and tracking the laser beam on the track of the data recording layer by a tracking control;   (c) holding the tracking control and changing a focus position of the laser beam from the data recording layer to the image drawing layer at a position in a disk radial direction where the position information representing a predetermined image drawing operation start position is detected and carrying out a forming operation of the visible image to be formed at a position in the disk radial direction from a predetermined position of the spindle motor in the rotating direction;   (d) setting the laser beam to a reproducing power, returning the focus position of the laser beam from the image drawing layer to the data recording layer and tracking the laser beam on the track of the data recording layer after the forming operation of the visible image at the position in the radial direction is completed;   (e) holding the tracking control and changing a focus position of the laser beam from the data recording layer to the image drawing layer at a position of the track adjacent to the position in the disk radial direction where the tracking control has been held and carrying out the forming operation of the visible image to be formed at a position in the disk radial direction from a predetermined position of the spindle motor in the rotating direction; and   (f) subsequently repeating the steps (d) and (e) to sequentially move the radial position where the forming operation of the visible image is carried out at a pitch of the track and form the visible image.   
   
   
       16 . The optical disk image drawing method according to  claim 15 , wherein the visible image to be formed has a no-image area in the radial direction where the visible image does not need to be formed in an intermediate position in the radial direction, and
 the method further comprises the steps of:   setting the laser beam to the reproducing power, and focusing the laser beam to the data recording layer when the position in the radial direction where the forming operation of the visible image is performed reaches a start position of the no-image area;   seeking a forming operation restart position of the visible image that passes an end position of the no-image area based on the position information recorded in the data recording layer;   holding the tracking control and changing the focus position of the laser beam from the data recording layer to the image drawing layer at a position where the forming operation restart position of the visible image is sought; and   carrying out the forming operation to be formed at the position where the forming operation restart position of the visible image is sought from the predetermined position of the spindle motor in the rotating direction.   
   
   
       17 . The optical disk image drawing method according to  claim 15 , wherein the visible image is permitted to be formed on the image drawing layer under condition that the optical pick-up detects predetermined disk identifying information, which allows image drawing, from the data recording layer of the optical disk. 
   
   
       18 . The optical disk image drawing method according to  claim 17 , wherein the disk identifying information is described by any of a sub-code, main data, a specific generation pattern of a CRC error, an ATIP, and ADIP. 
   
   
       19 . The optical disk image drawing method according to  claim 15 , wherein the visible image is permitted to be formed on the image drawing layer under condition that the optical pick-up detects a disk identifying mark, which allows image drawing, formed in an area in an inner periphery side from a data recording area on a disk substrate surface at a side that the optical pick-up of the optical disk is arranged or on the data recording layer.