Recording method for optical disc device

Abstract

An optical disc device recording method, which includes determining whether or not a recording process that records information on a label surface of an optical disc has failed, detecting a recording failure position at which the recording process has failed when the determining step determines the recording process has failed, and resuming the recording process from the detected recording failure position.

1 . An optical disc recording method, comprising:
 when it is determined that a recording on a label surface of the optical disc has failed, calculating a failure position at which the recording has failed;   confirming signal levels while at least one of inwardly and outwardly moving an objective lens to positions around a radial position of the failure position on a concentric circle of the label surface;   detecting the radial position of the failure position based on the confirmed signal levels; and   resuming the recording from the detected failure position.   
   
   
       2 . The method according to  claim 1 , wherein the calculating step includes calculating a circumferential position of the failure position based on at least one of a number of FG pulses and a number of spokes counted from an end position of an index mark of the optical disc. 
   
   
       3 . The method according to  claim 1 , wherein the radial position of the failure position is calculated based on information about a position of an optical pickup measured and stored from an initial position of the recording until the recording has failed, and information about a position of the objective lens measured and stored at the moment when the recording has failed. 
   
   
       4 . The method according to  claim 1 , wherein the radial position of the failure position is calculated based on stored driving values of an actuator and a sled motor after an initial position of the recording. 
   
   
       5 . The method according to  claim 4 , wherein the driving value of the sled motor is an accumulation of driving values applied to the sled motor until the recording has failed after the initial position of the recording, and the driving value of the actuator is a value of a driving signal applied to the actuator at a position when the recording has failed. 
   
   
       6 . The method according to  claim 1 , wherein the radial position of the failure position is calculated based on at least one of information about FG pulses and information about detected spokes. 
   
   
       7 . The method according to  claim 6 , wherein the information about the FG pulses is a rate at which an FG pulse is generated as the optical disc rotates at the moment when the recording has failed or a number of generated FG pulses until the recording process has failed. 
   
   
       8 . The method according to  claim 6 , wherein the information about detected spokes is a rate at which a spoke is detected as the optical disc rotates at the moment when the recording has failed or a number of detected spokes until the recording process has failed. 
   
   
       9 . The method according to  claim 1 , wherein whether the recording has failed is determined based on at least one of a Front Photo Detector Output (FPDO) signal and a Front Monitor Diode (FMD) signal. 
   
   
       10 . An apparatus for recording information on a recording medium, the apparatus comprising:
 an optical pickup, including an objective lens and an actuator, and configured to detect signals from or record data on the recording medium; and   a controller configured to control the optical pickup;   wherein the controller is further configured to
 calculate a failure position at which a recording on a label surface of the recording medium has failed; 
 confirm signal levels detected by the optical pickup while controlling the optical pickup to at least one of inwardly and outwardly move the objective lens to positions around a radial position of the failure position on a concentric circle of the label surface; 
 detect the radial position of the failure position based on the confirmed signal levels; and 
 resume the recording from the detected failure position. 
   
   
   
       11 . The apparatus according to  claim 10 , wherein the controller is configured to calculate a circumferential position of the failure position based on at least one of a number of FG pulses and a number of spokes counted from an end position of an index mark of the recording medium. 
   
   
       12 . The apparatus according to  claim 10 , wherein the controller is configured to calculate the radial position of the failure position based on information about a position of the optical pickup measured and stored from an initial position of the recording until the recording has failed, and information about a position of the objective lens measured and stored at the moment when the recording has failed. 
   
   
       13 . The apparatus according to  claim 10 , wherein the controller is configured to calculate the radial position of the failure position based on stored driving values of the actuator and a sled motor after an initial position of the recording. 
   
   
       14 . The apparatus according to  claim 13 , wherein the driving value of the sled motor is an accumulation of driving values applied to the sled motor until the recording has failed after the initial position of the recording, and the driving value of the actuator is a value of a driving signal applied to the actuator at a position when the recording has failed. 
   
   
       15 . The apparatus according to  claim 10 , wherein the controller is configured to calculate the radial position of the failure position based on at least one of a rate at which an FG pulse is generated as the optical disc rotates and a rate at which a spoke is detected as the optical disc rotates at the moment when the recording has failed. 
   
   
       16 . The apparatus according to  claim 10 , wherein the controller is configured to calculate the radial position of the failure position based on at least one of a number of generated FG pulses and a number of detected spokes until the recording process has failed. 
   
   
       17 . The apparatus according to  claim 10 , wherein the controller is configured to determine whether the recording has failed based on at least one of a Front Photo Detector Output (FPDO) signal and a Front Monitor Diode (FMD) signal