JP2010176841A5

JP2010176841A5 -

Info

Publication number: JP2010176841A5
Application number: JP2010086661A
Authority: JP
Filing date: 2010-04-05
Publication date: 2011-05-19
Anticipated expiration: 2023-09-16

Claims

With respect to an optical disc provided with a recording film capable of recording information by being changed into an optically different form by irradiating the energy beam, the energy beam has at least two light emission power levels, and the energy beam is recorded on the optical disc. Information is recorded as the length of the recording mark and the length of the space in the optically different form by moving in the film plane and irradiating in a plurality of pulses while changing the light emission time of each power level. An optical disc recording method for recording
Among the plurality of energy beam pulses, a mark length for recording the position and / or width of the final pulse is recorded while changing the position and width of the first pulse appropriately and independently according to the mark length and the previous space length. And an optical disk recording method, wherein recording is performed while appropriately changing according to the rear space length.

  With respect to an optical disc provided with a recording film capable of recording information by being changed into an optically different form by irradiating the energy beam, the energy beam has at least two light emission power levels, and the energy beam is recorded on the optical disc. Information is recorded as the length of the recording mark and the length of the space in the optically different form by moving in the film plane and irradiating in a plurality of pulses while changing the light emission time of each power level. An optical disc recording method for recording
  A set value related to the emission time of the energy beam pulse is defined as a product of a coefficient (integer) and a reference clock divided by a predetermined integer,
  The coefficient is represented by the sum of a reference value and a displacement amount with respect to the reference value,
  The position of the leading pulse is made to correspond to the recording mark length and the previous space length, and the displacement amount is held in the first table,
  The width of the first pulse is made to correspond to the recording mark length and the previous space length, and the displacement amount is held in the second table,
  An optical disk recording method, wherein information is recorded on the optical disk by changing a position of a leading pulse based on the first table and varying a width of the leading pulse based on the second table.

  A recording film that can be optically changed to an optically different form by irradiation of an energy beam, wherein the optical beam is irradiated in a plurality of pulses by changing the emission time of each power level of the energy beam having at least two emission power levels. An optical disc on which information is recorded as the length of a recording mark and the length of a space in different forms,
  A set value related to the emission time of the energy beam pulse is defined as a product of a coefficient (integer) and a reference clock divided by a predetermined integer,
  The coefficient is represented by the sum of a reference value and a displacement amount with respect to the reference value,
  A table that prescribes the set value relating to the position of the leading pulse as the displacement corresponding to the recording mark length and the previous space length;
  An optical disc comprising: a table that defines a set value relating to a width of a leading pulse as the amount of displacement corresponding to a recording mark length and a previous space length.

  An optical disc reproducing method for reproducing an optical disc provided with a recording film capable of recording information by changing to an optically different form by irradiating an energy beam,
  The information includes the energy beam having at least two light emission power levels, moving the energy beam relatively within the recording film surface of the optical disc, and changing the light emission time of each power level to form a plurality of pulses. Is recorded as the length of the recording mark and the length of the space in the optically different form,
  A set value related to the emission time of the energy beam pulse is defined as a product of a coefficient (integer) and a reference clock divided by a predetermined integer,
  The coefficient is represented by the sum of a reference value and a displacement amount with respect to the reference value,
  The position of the leading pulse is made to correspond to the recording mark length and the previous space length, and the displacement amount is held in the first table,
  The width of the first pulse is made to correspond to the recording mark length and the previous space length, and the displacement amount is held in the second table,
  2. The optical disk reproducing method according to claim 1, wherein the information is information recorded by changing a position and a width of a leading pulse based on the first and second tables.

  An optical disc apparatus capable of recording information on an optical disc as the length of a recording mark and the length of a space by irradiating the energy beam in a plurality of pulses while changing the emission time of each power level,
  An energy beam generator;
  Power adjusting means capable of setting the emission power of the energy beam generated by the energy beam generator to at least two predetermined power levels;
  A holding mechanism for holding the optical disc;
  Moving means capable of relatively moving the energy beam within the recording film surface of the optical disc;
  Conversion means for converting information to be recorded into a power level change of the energy beam;
  Storage means for holding a set value relating to emission control of the energy beam;
  A set value related to the emission time of the energy beam pulse is defined as a product of a coefficient (integer) and a reference clock divided by a predetermined integer,
  The coefficient is represented by the sum of a reference value and a displacement amount with respect to the reference value,
  The storage means associates the position of the leading pulse with the recording mark length and the preceding space length, holds the displacement as a first table, and associates the leading pulse width with the recording mark length and the preceding space length. , Holding the displacement amount as a second table,
  The optical disk apparatus according to claim 1, wherein the power adjusting means controls the timing of the light emission pulse while referring to the first table and the second table.

  A recording method of an optical disk apparatus for recording information by irradiating an energy beam in a plurality of pulses on a write once first optical disk and a rewritable second optical disk,
  A set value related to the emission time of the plurality of energy beam pulses is expressed as a sum of a linear term and a constant term with respect to a reference clock, and the coefficient of the linear term and the coefficient of the constant term are each defined as an integer,
  The first pulse position on the first optical disc is associated with the recording mark length and the previous space length, and the coefficient of the linear term with respect to the reference clock is held in the first table,
  The width of the first pulse related to the first optical disc is made to correspond to the recording mark length and the previous space length, and each of the linear term coefficient and the constant term coefficient with respect to the reference clock is held in the second table,
  Each of the coefficient of the linear term and the coefficient of the constant term with respect to the reference clock is held in the third table by making the width of the final pulse related to the first optical disc correspond to the recording mark length,
  Each of the coefficient of the linear term and the coefficient of the constant term with respect to the reference clock is held in the fourth table by making the width of the last pulse related to the second optical disc correspond to the recording mark length,
  The first pulse position and width are changed based on the first and second tables, and the final pulse width related to the first optical disk is changed based on the third table. Record information on an optical disc,
  An optical disc recording method, wherein information is recorded on the second optical disc by changing a width of a final pulse related to the second optical disc based on the fourth table.

  An optical disc playback method for an optical disc apparatus for playing back first information recorded on a write once first optical disc and second information recorded on a rewritable second optical disc,
  The first information and the second information are information recorded by irradiating an energy beam in a plurality of pulses,
  A set value related to the emission time of the plurality of energy beam pulses is expressed as a sum of a linear term and a constant term with respect to a reference clock, and the coefficient of the linear term and the coefficient of the constant term are each defined as an integer,
  The first pulse position on the first optical disc is associated with the recording mark length and the previous space length, and the coefficient of the linear term with respect to the reference clock is held in the first table,
  The width of the first pulse related to the first optical disc is made to correspond to the recording mark length and the previous space length, and each of the linear term coefficient and the constant term coefficient with respect to the reference clock is held in the second table,
  Each of the coefficient of the linear term and the coefficient of the constant term with respect to the reference clock is held in the third table by making the width of the final pulse related to the first optical disc correspond to the recording mark length,
  Each of the coefficient of the linear term and the coefficient of the constant term with respect to the reference clock is held in the fourth table by making the width of the last pulse related to the second optical disc correspond to the recording mark length,
  The first information is obtained by changing a position and a width of the leading pulse based on the first and second tables, and a width of a final pulse related to the first optical disk based on the third table. Information recorded on the first optical disc by being changed,
  The optical disc reproducing method, wherein the second information is information recorded on the second optical disc by changing a width of a final pulse related to the second optical disc based on the fourth table. .

  A method for recording information in an optical disc apparatus capable of loading a write once first optical disc and a rewritable second optical disc,
  A set value related to the emission time of the plurality of energy beam pulses is expressed as a sum of a linear term and a constant term with respect to a reference clock, and the coefficient of the linear term and the coefficient of the constant term are each defined as an integer,
  The first optical disk includes a first table in which a coefficient of a linear term with respect to the reference clock in which a position of a leading pulse corresponds to a recording mark length and a previous space length is held; A second table in which each of the coefficient of the linear term and the coefficient of the constant term corresponding to the reference clock corresponding to the previous space length is held, and the linear term for the reference clock corresponding to the recording mark length of the width of the final pulse. And a third table in which each of the coefficient and the constant term coefficient is held,
  The second optical disc has a fourth table in which each of a coefficient of a linear term and a coefficient of a constant term with respect to the reference clock is held with a width of a final pulse corresponding to a recording mark length,
  When the first optical disk is loaded in the optical disk device, the position and width of the head pulse are changed based on the first and second tables, and the width of the final pulse related to the first optical disk is Recording information on the first optical disk by changing the information based on the third table;
  When the second optical disk is loaded in the optical disk device, the width of the final pulse related to the second optical disk is changed based on the fourth table, and information is recorded on the second optical disk. An optical disc recording method.

  A method for reproducing information in an optical disc apparatus capable of loading a write once first optical disc and a rewritable second optical disc,
  The first optical disc has first information;
  The second optical disc has second information;
  The first information and the second information are information recorded by irradiating an energy beam in a plurality of pulses,
  A set value related to the emission time of the plurality of energy beam pulses is expressed as a sum of a linear term and a constant term with respect to a reference clock, and the coefficient of the linear term and the coefficient of the constant term are each defined as an integer,
  The first optical disk includes a first table in which a coefficient of a linear term with respect to the reference clock in which a position of a leading pulse corresponds to a recording mark length and a previous space length is held; A second table in which each of the coefficient of the linear term and the coefficient of the constant term corresponding to the reference clock corresponding to the previous space length is held, and the linear term for the reference clock corresponding to the recording mark length of the width of the final pulse. And a third table in which each of the coefficient and the constant term coefficient is held,
  The second optical disc has a fourth table in which each of a coefficient of a linear term and a coefficient of a constant term with respect to the reference clock is held with a width of a final pulse corresponding to a recording mark length,
  The first information is obtained by changing a position and a width of the leading pulse based on the first and second tables, and a width of a final pulse related to the first optical disk based on the third table. Information recorded on the first optical disc by being changed,
  The second information is information recorded on the second optical disk by changing a width of a final pulse related to the second optical disk based on the fourth table,
  When the first optical disc is loaded in the optical disc apparatus, the first information is reproduced from the first optical disc,
  When the second optical disk is loaded in the optical disk device, the second information is reproduced from the second optical disk.