CN101436414B - Recording parameter setting device, method and program thereof, computer-readable recording medium containing the program, information recording medium, recording/reproducing device - Google Patents

Abstract

The invention provides a recording parameter setting device, method, program thereof, recording medium containing the program, information recording medium and recording/reproducing device. A recording parameter setting device includes a trial recording parameter setting section (23) and a reproduced signal quality judging section. The trial recording parameter setting section inquires, in accordance with the recording information, a storage section containing recording parameters used for controlling heat of recording marks, and sets a trial recording parameter, wherein the recording parameters are used for controlling heat of at least rear edges, (b) the recording parameters are classified in accordance with recording mark lengths, and (c) recording parameters of a predetermined recording mark length or longer are classified into a same group. The reproduced signal quality judging section (26) judges whether or not a reproduced signal obtained by reproduction of the trial recording carried out in accordance with the trial recording parameter satisfies a predetermined reproduced signal quality. If no, the recording parameters of the predetermined recording mark length or longer are further classified into detailed groups and trial recording is carried out again. If the reproduced signal satisfies the predetermined reproduced signal quality, the reproduced signal quality judging section (26) sets the trial recording parameters as a recording parameter. This makes it possible to form a recording mark capable of surely providing a good reproduced signal quality while the number of recording parameters to be used is reduced.

Description

Record parameter setting device, method and program, the recording medium that records this program, information recording carrier, device for reproducing recorded

Technical field

The present invention relates to a kind of record parameter setting device, recording parameters setting program, the recording medium that records the embodied on computer readable of this program, information recording carrier and device for reproducing recorded and recording parameters establishing method that is used to carry out information recording/reproducing.

Background technology

For the information recording carrier that records Large Volume Data (for example, CD) device for reproducing recorded, the following prior art of general employing, promptly, make laser focusing on information recording carrier, by information recording carrier is heated, thereby make the change technology of the information of carrying out record of the physical characteristics of recording medium.On above-mentioned information recording carrier, record the numerical data of 2 values, the length of representing 2 kinds of states and above-mentioned 2 kinds of states with this 2 value numerical data, wherein, 2 kinds of states are meant, at the state that is formed with record mark on the above-mentioned information recording carrier (below be referred to as " mark ") be not formed with the state (below be referred to as " blank ") of record mark.At this, above-mentioned numerical data is referred to as recorded information.When being recorded in recorded information on the information recording carrier in the reality, coming the setting recording parameter according to the recorded information that will write down, and utilize this recording parameters that laser is changed, thereby on information recording carrier, form record mark, realize the record of recorded information.

In addition, in recent years,,, the high speed record is had higher requirement for shortening the processing time of device for reproducing recorded along with the increase of deal with data capacity.But for the information recording carrier of high-speed record, also can carry out record, at this moment, in the time of improving the sensitivity of record, but cause the information recording carrier of high-speed record to have the characteristic of easy accumulation of heat with low speed owing to the next exchange requires it.Thereby worsen the quality of replay signal because above-mentioned accumulation of heat might make record mark deform, therefore, but when forming record mark on the information recording carrier of high-speed record, it is particularly important that the heat when it is formed record mark is implemented control.

As the technology of the heat that forms record mark being implemented control, all if any high laser output control technology etc. write strategy (Write Strategy), this is write strategy and is well known.In writing strategy, based on above-mentioned recording parameters laser output is controlled, thereby the heat that forms record mark is controlled.Therefore, the quantity of recording parameters is many more, and the control of the heat during to the formation record mark is just complicated more.In addition, in advance recording parameters is recorded in information recording carrier as reference table, device for reproducing recorded reads this reference table and when setting, if the quantity of recording parameters is more, device for reproducing recorded is used for reading time of the information of reference table will be elongated, thereby cause consuming the long time till start-of-record.Therefore, the quantity of employed recording parameters is preferably the least possible.

To this, (the open communique " 2005-No. 92942 communiques " of Japan's patented claim, open day: that has disclosed on April 7th, 2005) that a kind of reference had controlled the compact disk recording method of the heat that is used to form record mark to the defined reference table of recording parameters at patent documentation 1.

Particularly, in patent documentation 1, front end pulse about the heat that is used to control leading edge, utilized reference table (with reference to Figure 17), in this reference table, with the preceding space length of record mark be divided into 2T, 3T, 4T, more than or equal to 4 kinds of 5T, with record mark length be divided into 2T, 3T, more than or equal to 3 kinds of 4T, wherein, leading edge is the formation starting position of record mark.In addition, about being used to control the rear end pulse of antemarginal heat, utilized reference table (with reference to Figure 18), in this reference table, with the back space length of record mark be divided into 2T, 3T, 4T, more than or equal to 4 kinds of 5T, with record mark length be divided into 3T, more than or equal to 2 kinds of 4T, back edge is the formation end position of record mark.That is to say that in patent documentation 1, the mark lengths more than or equal to 4T in the reference table is divided into same class, also be divided into same class more than or equal to the preceding space length of 5T and back space length.By this classification, reduced the heat of the leading edge that forms record mark and the quantity of the recording parameters that antemarginal heat is controlled.At this, T is the time of 1 clock period of expression.Thus, for example the 2T mark lengths be illustrated in the zone that forms the record mark of " 1 " in time of 2 clock period, be posting field, and the 2T space length is meant the zone that does not form record mark in the time of 2 clock period.

Along with the high speed of record, need further to improve the recording sensitivity that on information recording carrier, forms record mark.When utilizing laser to form record mark and since heat distribution concentrate on record mark the formation end position, be the back edge of record mark, therefore, along with the high speed of record, the accumulating tendency and will become stronger of antemarginal heat.Thus, need control antemarginal heat more closely by recording parameters.

Yet, in patent documentation 1, be used for the controlling recording mark the formation starting position, be leading edge heat recording parameters classification and need the more recording parameters classification of the antemarginal heat of strict control similarly to be set.That is to say that both have all utilized with the record mark length more than or equal to 4T is of a sort reference table.And, in the reference table that has defined recording parameters, do not have concrete announcement will reduce the quantity of recording parameters yet and record mark length and front and back space length are carried out The classification basis.Therefore,, there is such problem, that is, when actual reading and recording mark, can not guarantees to obtain good replay signal quality (can not guarantee obtain being scheduled to replay signal quality) though suppress to make the quantity of recording parameters tail off.

Summary of the invention

The present invention develops in view of the above problems, and purpose is to provide a kind of record parameter setting device, record parameter setting device program, the recording medium that records the embodied on computer readable of this program, information recording carrier, device for reproducing recorded and recording parameters establishing method that can suppress the quantity of employed recording parameters and can more positively form the record mark with good replay signal quality.

In order to address the above problem, record parameter setting device of the present invention is used for the setting recording parameter, above-mentioned recording parameters is used for forming record mark according to recorded information on information recording carrier, this record parameter setting device possesses: test data sheet (trial recording) parameter setting portion, the storage part that stores the recording parameters group is inquired about and is set the test data sheet parameter that is used to carry out test data sheet according to above-mentioned recorded information, wherein, above-mentioned recording parameters group is used to control the antemarginal at least heat of above-mentioned record mark, this back edge is the formation end region of above-mentioned record mark, above-mentioned recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, in the above-mentioned recording parameters group, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths; And replay signal quality judging part, when replay signal can not satisfy predetermined replay signal quality, to the record mark length in the above-mentioned recording parameters group further implement to segment more than or equal to the classification of booking situation mark lengths and carry out test data sheet once more, when above-mentioned replay signal satisfies predetermined replay signal quality, with the test data sheet parameter setting is above-mentioned recording parameters, wherein, above-mentioned replay signal is by resetting based on the resulting signal of the test data sheet of above-mentioned test data sheet parameter.

According to foregoing invention, the recording parameters group that is used for the antemarginal at least heat of controlling recording mark, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths, so, compare to according to the difference of above-mentioned record mark length classification one by one, can reduce the quantity of overall recording parameters.

At this, above-mentioned classification is meant, the classification of being carried out according to record mark length.Particularly, for the record mark length that is classified as a kind of classification, the recording parameters corresponding with these record mark length is endowed identical value or identical variable quantity.

In addition, in foregoing invention, based on recorded information, and the test data sheet parameter that is used to carry out test data sheet is set by the recording parameters configuration part, then, carry out test data sheet according to above-mentioned test data sheet parameter, thereby and this test data sheet of resetting obtain replay signal, judge that by replay signal quality judging part whether this replay signal satisfies predetermined replay signal quality.In replay signal quality judging part, when replay signal can not satisfy predetermined replay signal quality, according to record mark length the record mark length in the above-mentioned recording parameters group is further implemented to segment more than or equal to the classification of booking situation mark lengths and carry out test data sheet once more, when above-mentioned replay signal satisfies predetermined replay signal quality, with the test data sheet parameter setting is above-mentioned recording parameters, therefore, when increasing above-mentioned recording parameters, determine the recording parameters that satisfies predetermined replay signal quality.At this moment, can suppress to make that the number of categories of the recording parameters be used for satisfying predetermined replay signal quality is less.And, owing to decide the recording parameters that is used to control antemarginal heat having satisfied under the predetermined replay signal qualify requirement, the back edge of record mark is than the influence of the easier received heat of other posting fields of record mark, so, can reduce to be accumulated in the influence of antemarginal heat, form record mark with good replay signal quality.

Its result can suppress the quantity of employed recording parameters, and can more positively form the record mark with good replay signal quality.

In addition, in order to address the above problem, record parameter setting device of the present invention is used for the setting recording parameter, above-mentioned recording parameters is used for forming record mark according to recorded information on information recording carrier, above-mentioned recording parameters comprises: the recording parameters group that is used to control the leading edge heat of above-mentioned record mark, this recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, in this recording parameters group, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths; And the recording parameters group that is used to control the back edge heat of above-mentioned record mark, this recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, compare to the above-mentioned recording parameters group that is used for the leading edge heat of controlling recording mark, the record mark length in this recording parameters group is further segmented more than or equal to the classification of booking situation mark lengths.

Therefore, compare, can carry out disaggregated classification the recording parameters group of the back edge heat that is used for the controlling recording mark with the recording parameters group of the leading edge heat that is used for the controlling recording mark.Compare to simultaneously the recording parameters group that increases the leading edge heat that is used for the controlling recording mark and be used for the classification quantity of recording parameters group of the back edge heat of controlling recording mark, can reduce the quantity of overall recording parameters.In addition, the back edge of record mark is than the influence of the easier received heat of other posting fields of record mark, so, carry out disaggregated classification by recording parameters group to the back edge heat that is used for the controlling recording mark, the formation of controlling recording mark finishes the place, is antemarginal heat closely, the also influence of the heat that can reduce to accumulate forms the record mark with good replay signal quality.

Its result can suppress the quantity of employed recording parameters, and can more positively form the record mark with good replay signal quality.

In order to address the above problem, information recording carrier of the present invention has write down the recording parameters that is used for forming according to recorded information record mark in presumptive area, this recording parameters comprises: the recording parameters group that is used to control the leading edge heat of above-mentioned record mark, this recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, in this recording parameters group, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths; And the recording parameters group that is used to control the back edge heat of above-mentioned record mark, this recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, in this recording parameters group, record mark length is divided into same class greater than the recording parameters of booking situation mark lengths.

According to foregoing invention, owing to be used for the recording parameters group of heat of the leading edge of controlling recording mark, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths, and the recording parameters group that is used for the antemarginal heat of controlling recording mark, record mark length is divided into same class greater than the recording parameters of booking situation mark lengths, so, compare to according to the difference of above-mentioned record mark length and classification one by one, can reduce the quantity of overall recording parameters.

Its result can suppress the quantity of employed recording parameters, and can more positively form the record mark with good replay signal quality.

In order to address the above problem, recording parameters establishing method of the present invention is the method that is used for the setting recording parameter, above-mentioned recording parameters is used for forming record mark according to recorded information on information recording carrier, this recording parameters establishing method comprises: test data sheet parameter setting step, the storage part that stores the recording parameters group is inquired about and is set the test data sheet parameter that is used to carry out test data sheet according to above-mentioned recorded information, wherein, above-mentioned recording parameters group is used to control the antemarginal at least heat of above-mentioned record mark, this back edge is the formation end region of above-mentioned record mark, above-mentioned recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, in the above-mentioned recording parameters group, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths; And replay signal quality determining step, when replay signal can not satisfy predetermined replay signal quality, to the record mark length in the above-mentioned recording parameters group further implement to segment more than or equal to the classification of booking situation mark lengths and carry out test data sheet once more, when above-mentioned replay signal satisfies predetermined replay signal quality, with the test data sheet parameter setting is above-mentioned recording parameters, wherein, above-mentioned replay signal is by resetting based on the resulting signal of the test data sheet of above-mentioned test data sheet parameter.

According to foregoing invention, can suppress the quantity of employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, in order to address the above problem, recording parameters establishing method of the present invention is the note method that is used for the setting recording parameter, above-mentioned recording parameters is used for forming record mark according to recorded information on information recording carrier, this recording parameters establishing method comprises: the first recording parameters group categories step, controlling the recording parameters group of the leading edge heat of above-mentioned record mark classifies according to the record mark length in the above-mentioned recorded information at least, and, in the above-mentioned recording parameters group, the recording parameters of record mark length from the first booking situation mark lengths to the dominant record mark lengths is divided into same class; And the second recording parameters group categories step, controlling the recording parameters group of the back edge heat of above-mentioned record mark classifies according to the record mark length in the above-mentioned recorded information at least, and the recording parameters of the record mark length in this recording parameters group from the second booking situation mark lengths to the dominant record mark lengths is divided into same class; The above-mentioned second booking situation mark lengths is the record mark length of being longer than the above-mentioned first booking situation mark lengths.

According to foregoing invention, can suppress the quantity of employed recording parameters, and can more positively form record mark with good replay signal quality.

Description of drawings

Fig. 1 is the functional block diagram of an embodiment of the control part of the optical disc apparatus of expression among the present invention.

Fig. 2 is the structured flowchart of an embodiment of the above-mentioned optical disc apparatus of expression.

Fig. 3 is an oblique view of having represented by above-mentioned optical disk device recording the CD of information.

Fig. 4 is the sequential chart that the setting to the spike train corresponding with recorded information describes.

Fig. 5 is the sequential chart that the spike train that utilized when forming the 2T mark lengths to the record mark of 9T mark lengths and recording impulse parameter describe.

Fig. 6 is the process flow diagram that the motion flow that the setting of recording parameters among the present invention is moved is described.

Fig. 7 is the figure of an embodiment of expression reference table of the present invention.

Fig. 8 is the figure of an embodiment of expression reference table of the present invention.

Fig. 9 is the figure of an embodiment of expression reference table of the present invention.

Figure 10 is the figure of an embodiment of expression reference table of the present invention.

Figure 11 is the figure of an embodiment of expression reference table of the present invention.

Figure 12 is the figure of the relation between expression recording parameters condition and the wobble variation.

Figure 13 is the spike train that utilized when forming the 2T mark lengths to the record mark of 9T mark lengths and a sequential chart that example describes of recording impulse parameter.

Figure 14 is the spike train that utilized when forming the 2T mark lengths to the record mark of 9T mark lengths and a sequential chart that example describes of recording impulse parameter.

Figure 15 is the figure of the relation between expression recording parameters condition of the present invention and the wobble variation.

Figure 16 (a) is the expression figure that is recorded in an example of the reference table on the CD of the present invention.

Figure 16 (b) is the expression figure that is recorded in another example of the reference table on the CD of the present invention.

Figure 17 is the figure of the reference table of expression prior art.

Figure 18 is the figure of the reference table of expression prior art.

Embodiment

Below, with reference to accompanying drawing 1 to 16 (b) one embodiment of the present invention is described.

At first, as the device for reproducing recorded of present embodiment, be that example describes with optical disc apparatus (device for reproducing recorded) 1.As shown in Figure 2, the optical disc apparatus 1 of present embodiment has optical picking-up head (optical take-up apparatus) 11, pick device 12, pick device driving circuit 13, laser drive circuit 14, playback circuitry 15 and control part 20.In addition, record reproducing circuit bank 10 is made of pick device driving circuit 13, laser drive circuit 14 and playback circuitry 15.Optical disc apparatus 1 is the device that CD 2 is carried out recording of information and reads.CD 2 is so long as optical disc gets final product, and for example photomagneto disk etc. does not limit its kind.

Optical picking-up head 11 is installed on the pick device 12, and optical picking-up head 11 is used for the light beam (laser beam) of record reproducing information to CD 2 irradiation, simultaneously, detects behind the reflected light that comes from CD 2 reflections and exports to playback circuitry 15.Pick device 12 possesses optical picking-up head 11, data are write down and reset, and can be with respect to the radial direction of optical axis direction and CD 2, be that radial direction moves.

The control signal that pick device driving circuit 13 sends according to control part 20 drives pick device 12, and pick device 12 is moved relative to the track (not shown) of CD 2, that is, move with respect to above-mentioned radial direction and above-mentioned optical axis direction.In addition, the light beam output that irradiates of 14 pairs of optical picking-up heads 11 of laser drive circuit is controlled.Playback circuitry 15 is converted to replay signal with optical picking-up head 11 detected reflected light, and to control part 20 these signals of output.

The recording parameters of 20 pairs of record marks of control part is set, and wherein, record mark is the information that is recorded on the CD 2.In addition, by pick device driving circuit 13, control part 20 can make pick device 12 move, and makes optical picking-up head 11 illumination beams by laser drive circuit 14.In addition, control part 20 is obtained replay signal by playback circuitry 15, and this replay signal is the signal that is carried out the conversion gained by 15 pairs of optical picking-up heads of playback circuitry, 11 detected reflected light.About control part 20, see aftermentioned for details.

Secondly, with reference to Fig. 3 the summary of the CD 2 that is used for recorded information is described.This information is to be recorded in information on the CD 2 by optical disc apparatus 1.As shown in Figure 3, CD 2 has the usefulness of setting zone 41 and user area 42.Setting with zone 41 is the zones (position) of carrying out the information test data sheet, and user area 42 is to be used for the zone that recording user is wanted information.In addition, set with 41 zones of also being write down, zone for reference table (seeing aftermentioned for details).

Set to have more than and be limited to position shown in Figure 3, also may reside on any radial location of CD 2, also a plurality of existence can be arranged with regional 41 position.

Following simple declaration by optical disc apparatus 1 in the action of recorded information on the CD 2 and by the reset action of the information that on CD 2, write down of optical disc apparatus 1.

By optical disc apparatus 1 on CD 2 during recorded information, at first control part 20 comes the setting recording parameter based on recorded information, the record that sends from optical picking-up head 11 is irradiated onto the setting of CD 2 with on the zone 41 with light beam then, like this, information is recorded on the track of setting with zone 41 of CD 2.In addition, reset when being recorded in information on the CD 2 by optical disc apparatus 1, control part 20 is by pick device driving circuit 13, make setting that pick device 12 moves to CD 2 with regional 41 or user area 42 record the recording of information position.Then, control part 20 shines the light beam of playback usefulness by laser drive circuit 14 via the track that records the recording of information position of 11 pairs of CDs 2 of optical picking-up head.Optical picking-up head 11 detected reflected light are input to control part 20 after playback circuitry 15 is changed into replay signal.Thus, above-mentioned optical disc apparatus 1 information on the track that has been recorded in CD 2 of can resetting.At this, recorded information is meant the numerical data of 2 values, the length of representing 2 kinds of states and 2 kinds of states with the numerical data that goes up this 2 value of record at CD 2 (information recording carrier), wherein, 2 kinds of states are meant, be formed with the state (mark) of record mark and be not formed with the state (blank) of record mark on CD 2.So recorded information has been specified the length of the state (mark) that is formed with record mark on the CD 2 and these 2 kinds of states of the state (blank) that is not formed with record mark and above-mentioned 2 kinds of states.

In addition, as mentioned above, the optical disc apparatus 1 of present embodiment at first in the setting of CD 2 with zone 41 enterprising line items (test data sheet), then based on the information of test data sheet being reset the value of resulting replay signal and come the setting recording parameter by control part 20.Then, according to this recording parameters of setting, recorded information on each track of user area 42.In addition, after the recording parameters of optical disc apparatus 1 is set, operation of recording is carried out in user area 42, this operation of recording is identical with operation of recording known to general, so omit its explanation at this.

Before the setting of the recording parameters in control part 20 and the control part 20 described in detail, with reference to Fig. 4 and Fig. 5 recording parameters is described earlier.In the following description, (Run Length Limited code: the modulation system length of stroke limited code) is that example describes, but modulation system is not limited to the modulation system of (1,7) RLL with (1,7) RLL.Wherein, (1,7) RLL sign indicating number is meant that being used in magnetic, the optical digital recording limited the minimum value and the peaked coding of reversal interval.

In addition, this (1,7) in the RLL modulation system (seeing aftermentioned for details), spike train about recording impulse, the shortest record mark 2T is made of leading section and terminal part, when record mark is longer than shortest recording mark, between this leading section and terminal part, add the pars intermedia corresponding with this record mark length.In addition, in other modulation systems, it is the situation that begins from 3T that shortest recording mark is for example also arranged, and the shortest recording mark length of this moment constitutes (for example, DVD-RW etc.) by leading section, pars intermedia, terminal part.The record mark (for example, DVD-R etc.) that only is made of leading section is also arranged.At this, T represents the time of 1 clock period.Therefore, when for example record mark length is 3T, just be illustrated in the interior posting field that forms record mark of time of 3 clock period.

As shown in Figure 4, consider the Temperature Distribution of medium when writing down, on CD 2, be set with the spike train of the recording impulse corresponding with recorded information.In Fig. 4, be that the record mark length of 5T is example with the recorded information, represented the recording impulse corresponding with recorded information.Wherein, represent the spike train of recording impulse by the power (power) of time and recording impulse, the transverse direction of Fig. 4 is represented irradiation time, and the longitudinal direction of Fig. 4 is represented the power of recording impulse.

As mentioned above, above-mentioned spike train is made of leading section and terminal part, pars intermedia.At this, as shown in Figure 4, the part that is made of front end lifting position and front end pulse is a leading section; The part that is made of terminal pulse, terminal down position, cooling period and cooling end position is a terminal part; By the part that constitutes between the intergrade between front end pulse and the terminal pulse is pars intermedia.In addition, as shown in Figure 4, above-mentioned spike train also is made of recording power, blank power, middle power and bias voltage (cooling) power.In the present embodiment, recording power, blank power, middle power and bias voltage (cooling) power that constitutes spike train is called the recording power parameter.These recording power parameters are comprised in the above-mentioned recording parameters.In addition, though the recording power of the recording impulse of leading section, terminal part is identical in Fig. 4, the present invention is not limited thereto, and leading section can be different recording powers separately with terminal part.In addition, in Fig. 4, power with the order of recording power, blank power, middle power, bias voltage (cooling) power successively from large to small, but the present invention is not limited thereto.Preferably, the recording power of the recording impulse of leading section or terminal part is that maximum, cooling power are for minimum.

Spike train and the recording impulse parameter utilized when in addition, Fig. 5 has represented to form the various record mark length of 2T to 9T.Gone back illustration in Fig. 5: record mark length is that the record mark of 2T and 3T is made of front end pulse and cooling period; Record mark length more than or equal to the record mark of 4T (more than the 4T) by the front end pulse, between intergrade, terminal pulse and cooling period constitute.In addition, in Fig. 5, dTtop represent leading section the pulse starting position, be the front end lifting position; Ttop represents the pulsewidth of front end pulse; Cooling end position when dTe represents that the cooling period of terminal part finishes; Tlp represents the pulsewidth of terminal pulse; DTlp represents the down position (terminal down position) of terminal pulse.DTlp represents the down position of terminal pulse, also the cooling starting position of cooling period indicating impulse row, that be positioned at terminal part.Cooling end position when dTe represents that the cooling period of terminal part finishes, be also illustrated in the blank power P s of irradiation after cooling period during the starting position.DTtop, dTe, dTlp were set to from the clock reference time regularly separately, particularly, lifting position (becoming 1 position from 0) with the recorded information corresponding with each record mark length is a benchmark, setting dTtop according to the time of this benchmark is benchmark with the down position (becoming 0 position from 1) of the recorded information corresponding with each record mark length, sets dTe and dTlp according to the time of this benchmark.At this moment, for various record mark length, all use same benchmark.In addition, in Fig. 5, be benchmark with the lifting position of recorded information, set dTtop according to the time of this benchmark, the predetermined clock that also can stagger with the lifting position from recorded information position at interval is that benchmark is set dTtop.Similarly, in Fig. 5, down position with recorded information is a benchmark, set dTe and dTlp according to the time of this benchmark, can be that benchmark is set dTe and dTlp with the predetermined clock position at interval of staggering from the recorded information down position also, can be that benchmark is set dTe and dTlp respectively with the position of the difference amount of staggering that staggers from the recorded information down position also.In the present embodiment, dTtop, Ttop, dTe, Tlp, the dTlp that will be used for definition record pulse timing is called the recording impulse parameter.These recording impulse parameters are comprised in the above-mentioned recording parameters.

In addition, in Fig. 5, set the pulsewidth of front end pulse by Ttop, even the down position of front end pulse is set at the recording impulse parameter, also can represent the front end pulse during.Similarly, come the pulsewidth of setting terminal pulse by Tl p, even the lifting position of terminal pulse is set at the recording impulse parameter, also can represent terminal pulse during.

The value of recording impulse parameter is changed, thereby the shape of the feasible record mark that forms also change.Constitute the dTtop of leading section and Ttop since can make record mark the formation starting position, be that the shape of leading edge changes, so, can control the heat of leading edge by the parameter of dTtop in the recording parameters and Ttop.In addition, constitute dTe, the Tlp of terminal part and dTlp since can make record mark the formation end position, be that antemarginal shape changes, so, can control antemarginal heat by the parameter of the dTe in the recording parameters, Tlp and dTlp.In addition, because the variation of the middle power value in the recording power parameter can make accumulating of pars intermedia heat change, so, can control the shape of leading edge by the parameter of the middle power in the recording power parameter to the record mark between the back edge.

In addition, constitute recording parameters by above-mentioned recording power parameter and recording impulse parameter, the value of recording parameters is recorded in setting with in the zone 41 with the form of reference table, and reads back storage (record) in storage part 3 by optical disc apparatus 1.Storage part 3 can be the information recording carrier of storer etc., and perhaps server also can be the information recording carrier that is possessed in the optical disc apparatus 1, also can be the outside and the information recording carrier that can be connected with optical disc apparatus 1 of optical disc apparatus 1.In addition, about reference table, will describe in detail in the back.

Then, be described in detail in the setting of the recording parameters in the control part 20 of optical disc apparatus 1.The structural outline of control part 20 is described with reference to Fig. 1.Fig. 1 is the functional block diagram of the structure of control part 20 in the expression present embodiment.

As shown in Figure 1, control part 20 has recording parameters configuration part (record parameter setting device) 21.The following action in the function of control part 20 can be carried out in recording parameters configuration part 21, that is, the recording parameters of setting recording mark, this recording parameters are the information of record on CD 2; By laser drive circuit 14 from optical picking-up head 11 illumination beams; Obtain replay signal from playback circuitry 15, this replay signal is that optical picking-up head 11 detected reflected light are through the resulting signal of conversion.In addition, recording parameters configuration part 21 has recorded information obtaining section 22, test data sheet parameter setting portion (test data sheet parameter setting apparatus) 23, test data sheet instruction unit 24, replay signal obtaining section 25, replay signal quality judging part (replay signal quality judgment means) 26 and record instruction unit 27.Above-mentioned action is carried out by above-mentioned each one in recording parameters configuration part 21.

Recorded information obtaining section 22 obtains the recorded information that is write down on the CD 2.The place that obtains as recorded information, also can be the upper control part of control part 20, also can be to have stored the storer of recorded information or server etc., the place of obtaining of recorded information can be installed in the optical disc apparatus 1, also can be the external device (ED) of the optical disc apparatus 1 that can be connected with optical disc apparatus 1.

In addition, based on recorded information obtaining section 22 obtained recorded informations storage part 3 is inquired about, test data sheet parameter setting portion 23 can obtain defined in the reference table of storage part 3, corresponding with this recorded information recording parameters, and sets the test data sheet parameter that is used for the test data sheet action.In addition, when test data sheet parameter setting portion 23 receives the order (order of test data sheet parameter modification) of the test data sheet parameter of setting the test data sheet action again from replay signal quality judging part 26 described later, the setting of test data sheet parameter will be carried out again.Setting again about above-mentioned test data sheet parameter sees aftermentioned for details.

In addition, 24 pairs of pick device driving circuits 13 of test data sheet instruction unit and laser drive circuit 14 send indication, make that carrying out test data sheet in the setting of CD 2 on zone 41 based on the test data sheet parameter that is set by test data sheet parameter setting portion 23 moves.

According to the indication of test data sheet instruction unit 24, the setting of CD 2 to be carried out test data sheet and formed record mark with zone 41, replay signal obtaining section 25 obtains the replay signal of this record mark from playback circuitry 15.

The replay signal that replay signal quality judging part 26 is obtained according to replay signal obtaining section 25 is judged the quality of the test data sheet parameter that is used for this test data sheet.In replay signal quality judging part 26, whether satisfy the quality that predetermined replay signal quality is judged the test data sheet parameter that is used for this test data sheet according to replay signal obtaining section 25 obtained replay signal.If this replay signal satisfies predetermined replay signal quality, replay signal quality judging part 26 just determines that with the test data sheet parameter of this test data sheet (setting) is recording parameters, and delivers to record instruction unit 27.In addition, if this replay signal does not satisfy predetermined replay signal quality, replay signal quality judging part 26 judges that whether the number of categories of judging the reference table that test data sheet parameter setting portion 23 is inquired about is more than or equal to predetermined value.If the number of categories of this reference table is less than predetermined value, replay signal quality judging part 26 will be set the test data sheet parameter modification order of test data sheet parameter again and deliver to test data sheet parameter setting portion 23, and disaggregated classification is carried out in the classification that will be stored in the reference table in the storage part 3 simultaneously; If the number of categories of reference table is more than or equal to predetermined value, replay signal quality judging part 26 judges that recording parameters has taken place sets mistake, shows mistake at display part (not shown), and the setting of end record parameter action.About predetermined value, will be described hereinafter.At this, predetermined replay signal quality is meant, utilizes the error correction of device for reproducing recorded (optical disc apparatus 1 in the present embodiment), the replay signal quality in the scope that can fully correct; Also refer to the deviation on making such as device for reproducing recorded and optical disc (CD 2 of present embodiment) is paid attention to and any value of setting.Can use shake (jitter) as the replay signal quality, error rate etc.,, also the determined determined threshold of above-mentioned standard can be utilized as the replay signal quality of being scheduled to if when there is the lowest limit standard of shake, error rate etc. in optical disc.

Record instruction unit 27 is according to the recording parameters of being delivered to by replay signal quality judging part 26, pick device driving circuit 13 and laser drive circuit 14 is emitted in the indication of the user area 42 enterprising line items actions of CD 2.

Below, utilize Fig. 6 to 11 that the setting action of the recording parameters in optical disc apparatus 1 is described.The process flow diagram that Fig. 6 describes for the motion flow that in the present embodiment setting of recording parameters is moved.Fig. 7 to Figure 11 is the figure of the reference table of expression present embodiment.

At first, in step S1, recorded information obtaining section 22 obtains the recorded information of record on the CD 2.In step S2, the test data sheet parameter is inquired about and set in test data sheet parameter setting portion 23 according to recorded information obtaining section 22 obtained recorded informations to storage part 3 then.Specifically,, at first,, obtain the recording parameters corresponding, carry out the setting of test data sheet parameter then with this recorded information with reference to the reference table of Fig. 7 and Figure 11 according to recorded information.Fig. 7 represents the reference table of the down position dTlp of terminal pulse in the recording impulse parameter, this reference table be the controlling recording mark the formation end position, be the reference table of antemarginal heat.In the reference table of Fig. 7, will only be divided into a kind of classification more than or equal to the record mark length of 4T.At this moment, the record mark length of recorded information is less than 4T the time, the recording parameters that default (default) set is set at recording parameters, and the record mark length of recorded information is set at recording parameters with reference to the value (this moment for b4) of corresponding classification in the table more than or equal to 4T the time.For example, as default setting, at this moment, can preestablish the value of Ttop or dTlp.

In addition, Figure 11 as the formation starting position of controlling recording mark, be the reference table of the heat of leading edge, represented the reference table of the front end lifting position dTtop in the recording impulse parameter.In Figure 11, with record mark length be divided into 2T, 3T, more than or equal to 3 kinds of classification of 4T.In the later test data sheet, do not change this number of categories.Therefore, the quantity that is used to control the recording parameters of leading edge heat can not increase again.

As mentioned above, the reference table of Fig. 7 and Figure 11 is recorded in the setting of disc and uses zone 41, and optical disc apparatus 1 reads above-mentioned reference table and it is stored in storage part 3.Afterwards, test data sheet parameter setting portion 23 sets the test data sheet parameter with reference to the reference table of storage part 3.At this moment, for terminal pulse down position dTlp greater than the record mark length (more than the 5T) of 4T, identical value in the time of will be with 4T, just b4 is set to test data sheet parameter setting portion 23.In addition, the front end lifting position dTtop for greater than the record mark length (more than the 5T) of 4T the time, value that will be same with 4T, just c4 is set to test data sheet parameter setting portion 23.Because in test data sheet parameter setting portion 23, same more than or equal to 5T and 4T, the value of recording parameters is set to identical value, so, compare to and read various recording parameters till the 9T, can shorten the time of reading.23 couples of 4T of test data sheet parameter setting portion when test data sheet, give identical variable quantity to the value that 9T sets identical recording parameters.That is to say, use to the value of the variable quantity of 9T when the test data sheet as 4T with the value of the variable quantity of 4T.

In step S3, test data sheet instruction unit 24 is emitted in the setting of CD 2 with carrying out the indication that test data sheet is moved on the zone 41 based on the test data sheet parameter that sets in test data sheet parameter setting portion 23 to pick device driving circuit 13 and laser drive circuit 14.Then in step S4, by pick device driving circuit 13 and laser drive circuit 14, the setting that makes 11 pairs of CDs 2 of optical picking-up head is carried out information record based on this test data sheet parameter with the zone.Afterwards, in step S5, carry out the playback of this information, obtain replay signal by playback circuitry 15 by optical picking-up head 11.

In step S6, replay signal obtaining section 25 obtains this replay signal, and it is delivered to replay signal quality judging part 26.Then, in step S7, whether the replay signal that 26 pairs of replay signal obtaining sections 26 of replay signal quality judging part obtain satisfies predetermined replay signal quality is judged.At this moment, if when this replay signal satisfies predetermined replay signal quality (being "Yes") in step S7, move to step S8.If when this replay signal does not satisfy predetermined replay signal quality (being "No") in step S7, move to step S9.Specifically, as the replay signal quality, whether satisfy predetermined value (for example below 6.5%) according to shake and judge whether replay signal satisfies predetermined replay signal quality.

In step S9, judge by replay signal quality judging part 26, judge that whether number of categories in the reference table that test data sheet parameter setting portion 23 inquired about is more than or equal to predetermined value.Number of categories in this reference table moves to step S10 during more than or equal to predetermined value (being "Yes") in step S9.In addition, the number of categories in this reference table moves to step S11 during less than predetermined value (is "No" at step S9).Above-mentioned predetermined value below is described.Specifically, for example the number of categories of the reference table among Fig. 7 is a kind.And in the present embodiment, because maximum record mark length is 9T, so if 4T is classified one by one to 9T, the number of categories of reference table is 6 kinds to the maximum.At this moment, when replay signal quality judging part 26 is judged number of categories in the reference table that test data sheet parameter setting portion 23 inquired about and is 7 kinds in step S9, will be that 6 kinds situation conflicts with the maximum number of categories of reference table among Fig. 7.Thus, in recording parameters setting action, make a mistake.In addition, replay signal quality judging part 26 is when step S9, when judging number of categories in the reference table that test data sheet parameter setting portion 23 inquired about and being 6 kinds, because it is identical with the maximal value of the number of categories of reference table among Fig. 7, so can not increase number of categories, make a mistake thereby can set in the action at recording parameters.Thus, in the present embodiment, set the mistake that takes place in the action for detecting at recording parameters, the maximal value of number of categories is set at above-mentioned predetermined value in the reference table that test data sheet parameter setting portion 23 is inquired about.In addition, when each setting again is used for the test data sheet parameter of test data sheet action, the reference table that test data sheet parameter setting portion 23 is inquired about can change, and along with the change of above-mentioned reference table, the maximal value of the number of categories of reference table can change, and the maximal value of the number of categories of above-mentioned predetermined value and reference table changes accordingly.

In step S10, recording parameters is set when making a mistake in the action, and replay signal quality judging part 26 shows this mistake at display part (not shown), makes the setting release of recording parameters simultaneously.

In step S11, will carry out the test data sheet parameter modification order that the test data sheet parameter sets again and deliver to test data sheet parameter setting portion 23, simultaneously, set and make that the classification of the reference table that is stored in storage part 3 is further segmented.Particularly, for the record mark length more than or equal to 4T, the classification of reference table has only a kind of classification, as shown in Figure 8, is divided into 4T and more than or equal to 2 kinds of classification of 5T, and this classification is set in test data sheet parameter setting portion 23.Like this, can control 4T independently and, thereby carry out test data sheet more than or equal to the setting value of the test data sheet parameter of 5T.Then, again storage part 3 is inquired about after the 23 reception test recording parameterses change order of test data sheet parameter setting portion, from the defined recording parameters of the reference table of Fig. 8, obtain the recording parameters corresponding, set the test data sheet parameter that is used for the test data sheet action again with this recorded information.At this moment,, be set to identical value, be endowed same variable quantity during test data sheet for 5T to 9T.That is to say that the value of 5T is as using from the common value of 5T to 9T.Carry out reference table after changing, turning back to step S2 repetitive operation flow process.In addition, when turning back to step S2 repetitive operation flow process at every turn, as mentioned above, set the feasible classification that is stored in the reference table of storage part 3 and further segmented.Particularly, after the reference table of Fig. 8, use the reference table shown in Fig. 9, this reference table is classified into 4T, 5T, more than or equal to 3 kinds of classification of 6T.After the reference table of Fig. 9, use the reference table shown in Figure 10, this reference table is classified into 4T, 5T, 6T, more than or equal to 4 kinds of classification of 7T.Like this, the sorting phase ground with reference to table further segments.

In addition, in the present embodiment, the reference table that is used to control the reference table of leading edge heat and is used to control the back edge heat all will be divided into same class more than or equal to the record mark length of 4T (more than the booking situation mark lengths), but the present invention is not limited thereto.For example preferably, at the reference table that is used for controlling the reference table of leading edge heat and is used to control the back edge heat, the above-mentioned more above-mentioned further disaggregated classification of reference table quilt that is used to control the leading edge heat of reference table that is used to control the back edge heat, wherein, described reference table is deposited in storage part 3 when test data sheet action beginning.

In addition, as mentioned above, the reference table that is used for controlling the reference table of leading edge heat and is used to control the back edge heat, the above-mentioned more above-mentioned further disaggregated classification of reference table quilt that is used to control the leading edge heat of reference table that is used to control the back edge heat.Also can be recorded in the setting of CD 2 to these reference tables with regional 41.At this moment, read behind the reference table its storage (record) to storage part 3 by optical disc apparatus 1, and, among being used to control the reference table of leading edge heat and being used to control the reference table of back edge heat, the above-mentioned more above-mentioned further disaggregated classification of reference table quilt that is used to control the leading edge heat of reference table that is used to control the back edge heat, wherein, described reference table is stored in the storage part 3 when test data sheet action beginning.That is to say, comprised following reference table, that is, be used to control the reference table of leading edge heat, wherein, be divided into same class more than or equal to the classification of predetermined recording mark lengths; And the reference table that is used to control the back edge heat, wherein, be divided into same class (promptly be divided into a kind of classification of equaling the predetermined recording mark lengths and greater than a kind of classification of predetermined recording mark lengths) greater than the classification of predetermined recording mark lengths.

Thus, compare to the recording parameters that is used for controlling recording mark leading edge heat, can be in more detail the recording parameters of the back edge heat of controlling recording mark be carried out disaggregated classification.Compare to the number of categories of the recording parameters that increases leading edge and back edge simultaneously, can reduce the quantity of overall recording parameters.In addition, because the back edge of record mark is than the influence of the easier received heat of other posting fields of record mark, so, carry out disaggregated classification by recording parameters to the back edge heat that is used for the controlling recording mark, the formation of controlling recording mark finishes the place more closely, be antemarginal heat, reduce to accumulate the influence of heat, thereby form record mark with good replay signal quality.

In addition, in the present embodiment, when setting the test data sheet parameter again, structurally the reference table that is stored in storage part 3 is carried out disaggregated classification and set, but be not limited thereto.For example, a plurality of reference tables that storage has different number of categories in storage part 3 (for example in advance, the reference table of Fig. 7, Fig. 8, Fig. 9 and Figure 10 all is stored in the storage part 3), when the setting again of carrying out the test data sheet parameter, the kind that structurally changes the reference table that test data sheet parameter setting portion 23 inquired about gets final product.

For example, down position dTlp about terminal pulse, when if peremptory recording parameters reference table is the reference table of Figure 10, as shown in figure 10, the recording parameters dTlp that is used for the back edge heat of controlling recording mark be set during in record mark length and be categorized into 4T, 5T, 6T more than or equal to 4T, more than or equal to 4 kinds of classification of 7T.In addition, about the recording parameters dTtop of the leading edge heat that is used for the controlling recording mark, because obstructed overtesting record sets again, so keep the setting of step S2, as shown in figure 11, dTtop be set that to be divided into its record mark length be 2T, 3T, more than or equal to 3 kinds of classification of 4T.

In addition, reference table is recorded in the setting of CD with regional 41 o'clock, for example, the value that recording impulse parameter d Ttop, dTlp are corresponding with record mark length will be recorded, and the value of recording impulse parameter d Ttop, dTlp shown in Figure 16 (a) and Figure 16 (b) will be recorded in the setting of CD with regional 41.

By Figure 16 (a) and Figure 16 (b) as can be known: recording impulse parameter d Ttop is classified into 2T, 3T, more than or equal to 3 zones of 4T, and recording impulse parameter d Tlp is classified into 2T, 3T, 4T, more than or equal to 4 zones of 5T.That is to say, divide the zone of the value that is used in stored record pulse parameter dTtop accordingly with record mark length, more than or equal to booking situation mark lengths (in Figure 16 (a) more than or equal to 4T) time, the storage area of the value of recording impulse parameter d Ttop is same zone.Divide the zone of the value that is used in stored record pulse parameter dTlp accordingly with record mark length, greater than predetermined recording mark lengths (being more than or equal to 5T in Figure 16 (b)) time, the storage area of the value of recording impulse parameter d Tlp is same zone.

As mentioned above, the setting that is recorded in CD 2 at reference table compared to the reference table that is used to control the leading edge heat with regional 41 o'clock, and the reference table of control back edge heat is by further disaggregated classification.Therefore, can read out reference table with the zone by setting and obtain action effect of the present invention from CD 2.

In addition, the setting of CD 2 both can be to write the value that writes down by above-mentioned test with each value of zone 41 reference tables that write down, also can be that commodity dispatch from the factory that time conduct is write down in advance and the value that writes down.

Then, with reference to Figure 12 action effect of the present invention is described.Figure 12 represents the correlationship between the shake of the assortment of reference table and record mark replay signal.

As the recording parameters of the down position dTlp of terminal pulse, in condition 1, used the reference table (the corresponding record mark lengths is divided into a kind of classification more than or equal to 4T with the recording impulse parameter) of Fig. 7; In condition 2, used the reference table (corresponding record mark lengths, the recording impulse parameter is divided into 4T and more than or equal to 2 kinds of classification of 5T) of Fig. 8; In condition 3, used the reference table (corresponding record mark lengths, the recording impulse parameter is divided into 4T, 5T and more than or equal to 3 kinds of classification of 6T) of Fig. 9; In condition 4, used the reference table (corresponding record mark lengths, the recording impulse parameter is divided into 4T, 5T, 6T and more than or equal to 4 kinds of classification of 7T) of Figure 10.For example, if when predetermined replay signal quality is decided to be shake 6.5% below, as can be known: only have ready conditions and 4 can satisfy the replay signal quality of being scheduled to according to Figure 12.That is to say, for the quantity that reduces recording parameters gets the sorted generalization of record mark length when too big, as condition 1, condition 2, and condition 3 can not satisfy predetermined replay signal quality.To this, in the present invention, when the reference table of service condition 1, can not satisfy predetermined replay signal quality, with regard to the reference table of service condition 2, reset and make disaggregated classification is carried out in the classification of reference table, till satisfying predetermined replay signal quality.

In addition, Yu Ding replay signal quality has more than the shake that is defined as below 6.5%.At this, but predetermined replay signal quality is the error-correction level of expression device for reproducing recorded, and also can fully guarantee the replay signal quality in a large amount of situations that occur deviation when making optical disc apparatus 1 and CD 2.For example, when predetermined replay signal quality was set at shake below 7%, according to Figure 12 as can be known, condition 2,3,4 became the condition that satisfies the replay signal quality.

Then, with reference to Figure 15 action effect of the present invention is described.In Figure 15, use reference table (the corresponding record mark lengths of Fig. 8, the recording impulse parameter is divided into 4T and more than or equal to 2 kinds of classification of 5T) as the recording parameters of the down position dTlp of terminal pulse, the position of the dTlp of relative 4T, make more than or equal to the position of the dTlp of 5T relatively towards the place ahead of time-axis direction to (promptly, when the opposite direction of time direct of travel) changing, the relation between the shake of the relative position of dTlp and record mark replay signal is represented.That is to say that in Fig. 4, Fig. 5, the time direct of travel is the direction from left side to the right side of figure, so, change to the left more than or equal to the dTlp of 5T.The value of dTlp is that the down position with recorded information is to set time of benchmark, and wherein, this recorded information is corresponding with each record mark length.At this moment, clock interval T is about 3.8ns, is the position that unit staggers (moving) dTlp with T/16.As shown in figure 15, the position of the dTlp of relative 4T, make more than or equal to the position of the dTlp of 5T relatively towards the place ahead of time shaft to (promptly, when the opposite direction of time direct of travel) changing, as can be known: along with more than or equal to the position of the dTlp of 5T relatively towards the place ahead of time shaft when changing, shake improves earlier, worsen variation afterwards (specifically, shake till the relative position " 3 " and improve gradually, and after relative position " 3 ", shake runs down).In addition, when dTlp is changed, the value of the pulsewidth Tlp of terminal pulse is changed.Thus, if dTlp is changed, the lifting position of Tlp will be near the down position of front end pulse pulsewidth Ttop so.At this moment, arrive the down position of Ttop and the lifting position of Tlp and take place before the position of coincidence, the dTlp more than or equal to 5T is changed towards the direction opposite with the direct of travel of time.

The variation of above-mentioned shake be the reasons are as follows.At first, when record mark length elongated, can be elongated between the intergrade between front end pulse and the terminal pulse.Therefore, accumulating of record mark back edge heat can increase.So, by make record mark length for example more than or equal to the position of the dTlp of 5T forwards to moving, thereby making to shorten between intergrade to alleviate accumulating of back edge heat, like this, compares to situation about not shortening between intergrade, shake can improve.But, if the position of dTlp makes to become too short between intergrade that so, it is not enough to be used to form the antemarginal heat appearance of record mark, also can cause shake to worsen significantly forwards to moving.The result who represents as Figure 15 is as can be known: the dTlp with 4T is a benchmark, if more than or equal to the relative position of the dTIp of 5T-T/16 between-the 5T/16 (at this, the rear of time shaft is made as to (time direct of travel)+) time, shake will become below 7%, and shake improves.

As mentioned above, has at least the reference table that the recording parameters to the back edge heat that is used for the controlling recording mark defines, in above-mentioned reference table, at least with above-mentioned recorded information in mark lengths classify accordingly, and, be divided into same class more than or equal to the mark lengths of predetermined labels length.Set the test data sheet parameter based on above-mentioned reference table, carry out the test data sheet and the test data sheet of resetting according to this test data sheet parameter, if when not satisfying predetermined replay signal quality, further carry out disaggregated classification according to mark lengths with reference to the classification in the table more than or equal to above-mentioned predetermined labels length, and then carry out the test data sheet and the test data sheet of resetting, determine the reference table that satisfies predetermined replay signal quality.Thus, reduce the quantity of employed recording parameters as much as possible, and the formation end position by the controlling recording mark, be antemarginal heat, the influence of the heat that reduces to accumulate, thus the record mark that can obtain good replay signal quality (satisfying predetermined replay signal quality) formed.

In addition, compare to other posting fields of record mark, the influence of the easy received heat of back edge of record mark, so, when the record mark that forms more than or equal to the booking situation mark lengths, as long as just can form record mark with good replay signal quality by controlling antemarginal heat.So, in the present invention, by setting the recording parameters of control back edge heat, just can positively form record mark at least with good replay signal quality.

In addition, under the situation of using the predetermined structure of reference table, if process along with the time, when the record condition of the track of CD 2 changes, because reference table is changed in variation that can not the respective carter record condition continually, so variation that can not the respective carter record condition forms the record mark with good replay signal quality.To this, in the present invention, has the structure that resets the classification of reference table with the result of test data sheet accordingly, even along with the process of time, variation has taken place in the record condition of the track of CD 2, and variation that also can the respective carter record condition resets the classification of reference table.Thus, even along with the process of time, variation has taken place in the record condition of the track of CD 2, also can form the have good replay signal quality record mark of (satisfying predetermined replay signal quality).

In addition, also can be such structure, that is, the setting that the reference table of the recording parameters that sets is recorded in CD 2 is with in the zone 41, in the time of setting recording parameters after this, reads out by optical disc apparatus 1 and to be recorded in this reference table of setting with in the zone 41.About the down position dTlp of terminal pulse, for example, when the reference table of the recording parameters that is determined was the situation of Figure 10, the setting that this information is recorded in CD 2 was with regional 41.Like this, when optical disc apparatus 1 will be set after this recording parameters dTlp, can be from setting with the information that reads out the reference table of Figure 10 regional 41.

According to above structure, can utilize the reference table that carries out test data sheet resulting records parameter in advance, the test data sheet parameter during as new record.So, only be decided to be to recording parameters, can reduce the number that returns of revision test record.And, because the setting that the reference table of the recording parameters that sets is recorded in CD 2 is with zone 41, so, need not to be provided with in addition the memory storage of storer etc.

In the present embodiment, the reference table that forms by the form with table utilizes recording parameters, but the present invention is not limited to this, also the set of recording parameters can be stored in the storage part.

In addition, in the present embodiment,, the method that begins to carry out interim classification from short mark lengths has been described, but has been not limited thereto as the sorting technique of reference table.But, record mark length is short more, and it is high more that frequency takes place in the data that are recorded in user area 42 for it.In addition, in test data sheet, there is no need directly to use recorded data in the user area 42, but by using data at random, carry out stage from short record mark length to long record mark length and divide time-like, have the sharp point that is easy to obtain good replay signal quality.In addition, carry out stage from short record mark length to long record mark length and divide time-like, can also be met the minimum number of categories of predetermined replay signal quality.Thus, have the following advantages, that is, can easily set feasible: the quantity of the recording parameters of reference table is for satisfying the minimum number of categories of predetermined replay signal quality.

In addition, in the present embodiment,, used record mark length, but be not limited thereto as the recorded information of being classified in the reference table.For example, also record mark length and space length can be classified in reference table as recorded information.At this moment, the classification of record mark length is changed, and space length is not classified, like this can the same quantity that suppresses recording parameters with present embodiment.

In addition, in the present embodiment,, used the down position dTlp of terminal pulse to be illustrated, but be not limited thereto as an example of reference table.Even use the Tlp of terminal pulse pulsewidth or the reference table that the cooling end position dTe of cooling period is classified, also can the antemarginal heat of controlling recording mark, and obtain effect same.In addition, as shown in Figure 5, more than or equal to 4T the time, 2 pulses with front end pulse and terminal pulse except that the spike train of these 2 pulses, can also be other spike train, for example, the spike train that Figure 13 represents, this spike train are by middle power Pm and recording power Pw being equated, constituting the spike train of record mark with 1 recording impulse; And the spike train represented of Figure 14, this spike train is the recording power Pw of terminal pulse and the spike train that middle power Pm equates.Owing to do not have the Tlp of expression terminal pulse pulsewidth among Figure 13 and Figure 14, can use Figure 13 and terminal pulse down position dTlp shown in Figure 14.That is to say, when using its generation that the recording medium of Figure 13 and spike train shown in Figure 14 is arranged, can adopt the reference table of the down position dTlp of terminal pulse.At this moment, in Figure 13, when dTlp is changed, dTlp is changed towards the direction opposite with time orientation, and the position of dTtop and the position of dTlp are overlapped.In addition, in Figure 14, when dTlp is changed, dTlp is changed towards the direction opposite with time orientation, and the down position of Ttop and the position of dTlp are overlapped.

In addition, in the present embodiment, used the recording parameters of front end lifting position dTtop, but be not limited thereto as control leading edge heat.Also can use the pulsewidth Ttop of front end pulse as recording parameters.

In addition, in the present embodiment, such structure has been described, promptly obstructed overtesting writes down sets the recording parameters that is used to control the leading edge heat again, but is not limited thereto.For example, also can be such structure, that is, can set the recording parameters that is used to control the back edge heat again by test data sheet, also can set the recording parameters that is used to control the leading edge heat again by test data sheet.At this moment, can with set again be used to control the back edge heat recording parameters in the same manner, set the recording parameters that is used to control the leading edge heat again.

In addition, in the present embodiment, the 1st step and the 2nd step are all carried out in recording parameters configuration part 21, wherein, in the 1st step, to being used to control the recording parameters group of leading edge heat, to be divided into same class more than or equal to the recording parameters of booking situation mark lengths, in the 2nd step, to being used to control the recording parameters group of back edge heat, at least classify according to the record mark length in the above-mentioned recorded information, compare to the classification of the recording parameters that is used to control above-mentioned leading edge heat simultaneously, will be more than or equal to the record mark length of booking situation mark lengths disaggregated classification further.Also can in different configuration parts, carry out accordingly with each step (the 1st and the 2nd step).

In addition, in the present embodiment, about being used in the reference table of test data sheet at first, to be made as same class more than or equal to the record mark length of 4T, but be not limited thereto, so long as get final product more than or equal to the booking situation mark lengths, the booking situation mark lengths can be got positive round values arbitrarily.At this, be meant more than or equal to the booking situation mark lengths, the record mark length that the back edge of prediction record mark is not influenced by the accumulation of heat of leading edge, that is the record mark length more than the record mark length can be independently the recording parameters of antemarginal recording parameters and leading edge controlled of prediction.Kind according to information recording carrier (CD 2 in the present embodiment) is set arbitrarily.

In addition, in the present embodiment, for example understand to use shake to come the replay signal quality of evaluation test record, but be not limited thereto, for example, the replay signal quality of also can the use error rate coming the evaluation test record.Get final product so long as can be used for the index of replay signal quality of evaluation test record.

In addition, in the present embodiment, the length of stroke restriction symbol as d=1 has used (1,7) RLL sign indicating number, but has been not limited thereto.Also can use other modulation systems and other codings.

In addition, in the present embodiment, use the optical disc apparatus 1 of optical modulation record, but be not limited thereto, also can use the optical disc apparatus of photomagnetism modulation record.In addition, in the present embodiment,, used optical disc apparatus 1, but be not limited thereto as an example of device for reproducing recorded.For example, thus so long as get final product by information recording carrier being heated the change device of the information of carrying out record of the physical characteristics that makes this information recording carrier.With optical disc apparatus 1 in the same manner, can utilize magnetic recording, photomagnetism pen recorder etc.

At last, each one of recording parameters configuration part 21 in the above-mentioned embodiment and various processes can realize by following processing, promptly, the calculation portion of CPU etc. carries out institute's program stored in the storage parts such as ROM (Read Only Memory) or RAM, and the Department of Communication Force of the efferent of the input part of supervisory keyboard etc., display screen etc. or interface circuit etc. etc.Thus, computing machine has above-mentioned each one, and its reading and recording is in the said procedure of recording medium and carry out this program, thereby can realize the various functions and the various processing of the recording parameters configuration part 21 in the present embodiment.In addition, also said procedure can be recorded in movably on the recording medium, realize above-mentioned various functions and various processing by computing machine arbitrarily.

As this recording medium, it can be the storer (not shown) that microcomputer is handled, the program medium of ROM for example, perhaps, it also can be such program medium, that is, be set at the program reading device, by inserting the program medium that recording medium can read, this program reading device is as external memory.

In addition, no matter be which kind of situation, but the program of preferred microprocessor access of stored program and execution.In addition, preferred such mode promptly, reads out program, and the program that is read out is downloaded to the program storage area of microcomputer, carries out this program then.Wherein, the program of download usefulness is stored in agent set in advance.

In addition, as the said procedure medium, can be can with body portion from recording medium, for example, can comprise semiconductor memory interior, the recording medium that keeps program regularly, wherein, semiconductor memory is all if any tape, the band class of cartridge tape etc., comprise floppy disk, disk and CD-ROM such as hard disk, MO, MD, DVD, the dish class of CDs such as CD-R, IC-card (comprising storage card), the card class of light-card etc. or mask-type ROM, EPROM (programmable read only memory), EEPROM (EPROM), the semiconductor memory of flash memory (Flash ROM) etc.

In addition, if can connect the communication network that comprises the internet on the system architecture, also can be such recording medium, that is, as from the downloaded program, flowable ground keeps the recording medium of program.

As mentioned above, preferably, during from the downloaded program, the program of this download usefulness is stored in the agent set in advance, perhaps obtains from other recording medium.

According to the present invention, increase the number of categories of recording parameters group, decision is used to satisfy the recording parameters of predetermined replay signal quality.So, when decision is used to satisfy the recording parameters of predetermined replay signal quality, can suppress to make that the number of categories of recording parameters group is less.In addition, decision is used to control the recording parameters of back edge heat so that satisfy the predetermined replay signal quality at least, so, the influence of antemarginal heat can be reduced to be accumulated in, and record mark can be formed with good replay signal quality.Thus, can obtain such effect, that is, can suppress the quantity of institute's service recorder parameter, can positively form record mark with good replay signal quality.

Record parameter setting device of the present invention is used for the setting recording parameter, this recording parameters is used for forming record mark according to recorded information on information recording carrier, this record parameter setting device possesses: test data sheet parameter setting portion, the storage part that stores the recording parameters group is inquired about and is set the test data sheet parameter that is used to carry out test data sheet according to above-mentioned recorded information, wherein, above-mentioned recording parameters group is used to control the antemarginal at least heat of above-mentioned record mark, this back edge is the formation end region of above-mentioned record mark, above-mentioned recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, in the above-mentioned recording parameters group, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths; And replay signal quality judging part, when replay signal can not satisfy predetermined replay signal quality, to the record mark length in the above-mentioned recording parameters group further implement to segment more than or equal to the classification of booking situation mark lengths and carry out test data sheet once more, when above-mentioned replay signal satisfies predetermined replay signal quality, with the test data sheet parameter setting is above-mentioned recording parameters, wherein, above-mentioned replay signal is by resetting based on the resulting signal of the test data sheet of above-mentioned test data sheet parameter.

In addition, in record parameter setting device of the present invention, preferably, when above-mentioned replay signal can not satisfy predetermined replay signal quality, classification more than or equal to the booking situation mark lengths reclassifies above-mentioned replay signal quality judging part to the record mark length in the above-mentioned recording parameters group, and is divided into the classification of booking situation mark lengths and the classification of non-booking situation mark lengths.

Thus, interim ground increases the number of categories of recording parameters gradually, and decision is used for satisfying the recording parameters of predetermined replay signal quality.So when decision was used for satisfying the recording parameters of predetermined replay signal quality, for the classification quantity of recording parameters group, in can positively getting the recording parameters group that satisfies the predetermined replay signal quality, its classification quantity was minimum value.Therefore, can suppress to make that the quantity of employed recording parameters is minimum value, and can more positively form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, above-mentioned recording parameters is the terminal down position of spike train, and this spike train is used to form above-mentioned record mark.

Thus,, can suppress the quantity of employed recording parameters, and can more positively form record mark as recording parameters with the terminal down position of the spike train that is used to form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, above-mentioned recording parameters is the pulsewidth of the terminal pulse of spike train, and this spike train is used to form above-mentioned record mark.

Therefore,, can suppress the quantity of employed recording parameters, and can more positively form record mark as recording parameters with the pulsewidth of the terminal pulse of the spike train that is used to form record mark with good replay signal quality.

In addition, record parameter setting device of the present invention is used for the setting recording parameter, this recording parameters is used for forming record mark according to recorded information on information recording carrier, above-mentioned recording parameters comprises: the recording parameters group of heat that is used to control the leading edge of above-mentioned record mark, this recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, in this recording parameters group, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths; And the recording parameters group that is used to control the antemarginal heat of above-mentioned record mark, this recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, compare to the recording parameters group of the heat of the above-mentioned leading edge that is used for the controlling recording mark, the record mark length in this recording parameters group is further segmented more than or equal to the classification of booking situation mark lengths.

In addition, in record parameter setting device of the present invention, preferably, the recording parameters that the antemarginal heat of above-mentioned record mark is controlled is the terminal down position of spike train, and this spike train is used to form above-mentioned record mark.

Thus, with the terminal down position of the spike train that is used to form record mark recording parameters as the back edge heat that is used for the controlling recording mark, the quantity that can suppress employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, the recording parameters that the antemarginal heat of above-mentioned record mark is controlled is the pulsewidth of the terminal pulse of spike train, and this spike train is used to form above-mentioned record mark.

Thus, with the pulsewidth of the terminal pulse of the spike train that is used to form record mark recording parameters as the back edge heat that is used for the controlling recording mark, the quantity that can suppress employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, the recording parameters that the antemarginal heat of above-mentioned record mark is controlled is the cooling end position of the cooling period end of spike train, and this spike train is used to form above-mentioned record mark.

Thus, the cooling end position that finishes with cooling period of the spike train that is used to form record mark is as the recording parameters of the back edge heat of controlling recording mark, the quantity that can suppress employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, the recording parameters that the heat of the leading edge of above-mentioned record mark is controlled is the front end lifting position of spike train, and this spike train is used to form above-mentioned record mark.

Thus, with the front end lifting position of the spike train that is used to form record mark recording parameters as the leading edge heat of controlling recording mark, the quantity that can suppress employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, the recording parameters that the heat of the leading edge of above-mentioned record mark is controlled is the pulsewidth of the front end pulse of spike train, and this spike train is used to form above-mentioned record mark.

Thus, with the pulsewidth of the front end pulse of the spike train that is used to form record mark recording parameters as the leading edge heat of controlling recording mark, the quantity that can suppress employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, in the recording parameters group that the antemarginal heat of above-mentioned record mark is controlled, record mark length is further segmented more than or equal to the classification of booking situation mark lengths, is divided into the classification of booking situation mark lengths and the classification of non-booking situation mark lengths.

Thus, compare to the number of categories of the recording parameters group of the leading edge heat that is used for the controlling recording mark, the number of categories of recording parameters group that is used for the back edge heat of controlling recording mark will segment a kind more.So, can suppress the quantity of employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, in the recording parameters group that the antemarginal heat of above-mentioned record mark is controlled, record mark length is further segmented more than or equal to the classification of booking situation mark lengths, be divided into the classification of booking situation mark lengths and the classification of non-booking situation mark lengths, the recording parameters of the recording parameters of above-mentioned booking situation mark lengths and above-mentioned non-booking situation mark lengths is set to different values.

Thus, the recording parameters of the recording parameters of above-mentioned booking situation mark lengths and above-mentioned non-booking situation mark lengths is set to different values, even the record mark length of non-booking situation mark lengths causes shake to worsen when elongated, the feasible antemarginal heat that alleviates is set on the recording parameters ground that also can make the recording parameters of non-booking situation mark lengths be independent of the booking situation mark lengths.So, can suppress the quantity of employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, in record parameter setting device of the present invention, preferably, the recording parameters that the antemarginal heat of above-mentioned record mark is controlled is the terminal down position of spike train, this spike train is used to form above-mentioned record mark, and, down position with the pairing recorded information of each record mark length is a benchmark, be used to form the terminal down position of spike train of the record mark of above-mentioned booking situation mark lengths relatively, on the direction opposite of time-axis direction, set the terminal down position of the spike train of the record mark that is used to form above-mentioned non-booking situation mark lengths with the time direct of travel with staggering.

Elongated along with record mark length can be elongated between the intergrade between front end pulse and the terminal pulse, thereby the antemarginal amount of stored heat of record mark increases, and according to said structure, can alleviate the increase of the back edge heat of record mark.That is to say, on the direction opposite of time-axis direction with the time direct of travel, set the terminal down position of the spike train of the record mark that is used to form non-booking situation mark lengths with staggering, thereby, can shorten between intergrade, alleviate record mark antemarginal amount of stored heat, make the shake become good.

In addition, in record parameter setting device of the present invention, preferably, above-mentioned booking situation mark lengths is more than or equal to 4T.

Therefore, back edge for the record mark that not influenced by the leading edge accumulation of heat, promptly, come the antemarginal recording parameters of controlling recording mark lengths for the recording parameters that can be independent of leading edge, thereby can set the feasible antemarginal amount of stored heat that alleviates more than or equal to the record mark of booking situation mark lengths.So, can suppress the quantity of employed recording parameters, and can more positively form record mark with good replay signal quality.

In addition, can utilize computing machine and carry out the function of each one in the above-mentioned record parameter setting device by program.And, by said procedure being recorded on the recording medium of embodied on computer readable, then can utilize the said procedure of computing machine execution arbitrarily.

The recording parameters that above-mentioned record parameter setting device sets is recorded the presumptive area of information recording carrier in the present invention.

According to foregoing invention, can suppress the quantity of employed recording parameters, and can more positively form record mark with good replay signal quality.

Device for reproducing recorded of the present invention comprises: the optical take-up apparatus that information recording carrier is carried out recording/reproducing; And above-mentioned record parameter setting device.

According to foregoing invention, can suppress the quantity of employed recording parameters, and can more positively form record mark with good replay signal quality.

The present invention is not limited to the respective embodiments described above, can carry out various variations according to the scope shown in the claim, suitably makes up the technological means that different embodiment discloses and the embodiment that obtains also is contained within the technical scope of the present invention.

The industry utilizability

Program by recording parameters setting device of the present invention, recording parameters setting device, record recording medium, information recording/medium, record replay device and recording parameters setting method that the computer-readable of this program is got, the quantity that can suppress employed recording parameters, and can more positively form the record mark with good playback signal quality. Therefore, the present invention is applicable to the industrial circle of information recording/media such as utilizing CD, photomagnetism dish, but is specially adapted to utilize the industrial circle of the information recording/medium of high-speed record.

Claims (14)

1. recording parameters establishing method that is used for the setting recording parameter, wherein, above-mentioned recording parameters is used for forming record mark according to recorded information on information recording carrier, and this recording parameters establishing method is characterised in that, comprising:

The first recording parameters group categories step, the recording parameters group that is used for controlling the leading edge heat of above-mentioned record mark is classified according to the record mark length of above-mentioned recorded information at least, and, in the above-mentioned recording parameters group, the recording parameters of record mark length from the first booking situation mark lengths to the dominant record mark lengths is divided into same class; And

The second recording parameters group categories step, the recording parameters group that is used for controlling the back edge heat of above-mentioned record mark is classified according to the record mark length of above-mentioned recorded information at least, and the recording parameters of the record mark length in this recording parameters group from the second booking situation mark lengths to the dominant record mark lengths is divided into same class;

The above-mentioned second booking situation mark lengths is the record mark length of being longer than the above-mentioned first booking situation mark lengths.

2. recording parameters establishing method according to claim 1 is characterized in that:

The recording parameters that the antemarginal heat of above-mentioned record mark is controlled is the terminal down position of spike train, and this spike train is used to form above-mentioned record mark.

3. recording parameters establishing method according to claim 1 is characterized in that:

The recording parameters that the antemarginal heat of above-mentioned record mark is controlled is the pulsewidth of the terminal pulse of spike train, and this spike train is used to form above-mentioned record mark.

4. recording parameters establishing method according to claim 1 is characterized in that:

The recording parameters that the antemarginal heat of above-mentioned record mark is controlled is the cooling end position of the cooling period end of spike train, and this spike train is used to form above-mentioned record mark.

5. according to any described recording parameters establishing method in the claim 1 to 4, it is characterized in that:

The recording parameters that the heat of the leading edge of above-mentioned record mark is controlled is the front end lifting position of spike train, and this spike train is used to form above-mentioned record mark.

6. according to any described recording parameters establishing method in the claim 1 to 4, it is characterized in that:

The recording parameters that the heat of the leading edge of above-mentioned record mark is controlled is the pulsewidth of the front end pulse of spike train, and this spike train is used to form above-mentioned record mark.

7. recording parameters establishing method according to claim 1 is characterized in that:

In the recording parameters group that the antemarginal heat of above-mentioned record mark is controlled, record mark length is further segmented more than or equal to the classification of booking situation mark lengths, is divided into the classification of booking situation mark lengths and the classification of non-booking situation mark lengths.

8. recording parameters establishing method according to claim 7 is characterized in that:

In the recording parameters group that the antemarginal heat of above-mentioned record mark is controlled, record mark length is further segmented more than or equal to the classification of booking situation mark lengths, be divided into the classification of booking situation mark lengths and the classification of non-booking situation mark lengths, the recording parameters of the recording parameters of above-mentioned booking situation mark lengths and above-mentioned non-booking situation mark lengths is set to different values.

9. recording parameters establishing method according to claim 8 is characterized in that:

The recording parameters that the antemarginal heat of above-mentioned record mark is controlled is the terminal down position of spike train, this spike train is used to form above-mentioned record mark, and, down position with the pairing recorded information of each record mark length is a benchmark, be used to form the terminal down position of spike train of the record mark of above-mentioned booking situation mark lengths relatively, on the direction opposite of time-axis direction, set the terminal down position of the spike train of the record mark that is used to form above-mentioned non-booking situation mark lengths with the time direct of travel with staggering.

10. recording parameters establishing method according to claim 1 is characterized in that:

Above-mentioned booking situation mark lengths is more than or equal to 4T.

11. a recording parameters establishing method that is used for the setting recording parameter, wherein, above-mentioned recording parameters is used for forming record mark according to recorded information on information recording carrier, and this recording parameters establishing method is characterised in that, comprising:

Test data sheet parameter setting step, the storage part that stores the recording parameters group is inquired about and is set the test data sheet parameter that is used to carry out test data sheet according to above-mentioned recorded information, wherein, above-mentioned recording parameters group is used to control the antemarginal at least heat of above-mentioned record mark, this back edge is the formation end region of above-mentioned record mark, above-mentioned recording parameters group is classified according to the record mark length in the above-mentioned recorded information at least, and, in the above-mentioned recording parameters group, record mark length is divided into same class more than or equal to the recording parameters of booking situation mark lengths; And

Replay signal quality determining step, when replay signal can not satisfy predetermined replay signal quality, to the record mark length in the above-mentioned recording parameters group further implement to segment more than or equal to the classification of booking situation mark lengths and carry out test data sheet once more, when above-mentioned replay signal satisfies predetermined replay signal quality, with the test data sheet parameter setting is above-mentioned recording parameters, wherein, above-mentioned replay signal is by resetting based on the resulting signal of the test data sheet of above-mentioned test data sheet parameter.

12. recording parameters establishing method according to claim 11 is characterized in that:

When above-mentioned replay signal can not satisfy predetermined replay signal quality, in above-mentioned replay signal quality determining step, classification more than or equal to the booking situation mark lengths reclassifies to the record mark length in the above-mentioned recording parameters group, and is divided into the classification of booking situation mark lengths and the classification of non-booking situation mark lengths.

13. recording parameters establishing method according to claim 11 is characterized in that:

Above-mentioned recording parameters is the terminal down position of spike train, and this spike train is used to form above-mentioned record mark.

14. recording parameters establishing method according to claim 11 is characterized in that:

Above-mentioned recording parameters is the pulsewidth of the terminal pulse of spike train, and this spike train is used to form above-mentioned record mark.

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