CN1629942A - Method for determining maximum storage capacity of optical information recording media - Google Patents
Method for determining maximum storage capacity of optical information recording media Download PDFInfo
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- CN1629942A CN1629942A CN 200410103714 CN200410103714A CN1629942A CN 1629942 A CN1629942 A CN 1629942A CN 200410103714 CN200410103714 CN 200410103714 CN 200410103714 A CN200410103714 A CN 200410103714A CN 1629942 A CN1629942 A CN 1629942A
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Abstract
This invention provides a method for determining the maximum storage volume of optical information registered media. The media has a preformed groove marked with preset address codes on it. This invention determines the maximum storage volume of said optical information register media according to the tested last actually existed preset address coded from said preset address codes, finally, the tested time value represented by the last actual existed code is expressed as the largest storage volume of said optical information registered media.
Description
The application be submitted on May 23rd, 2002, application number is 02120412.8, denomination of invention is divided an application for the application case of " being used for determining the method for the maximum storage capacity of optic informating recording medium ".
Technical field
The invention provides a kind of method that is used for the maximum storage capacity of definite optic informating recording medium (Optical information recordmedium), and especially, this optic informating recording medium has pre-formation groove (Pregroove), also be marked with presumptive address sign indicating number (Predeterminedaddress codes) this pre-formation on the groove, for example, the pre-absolute time code (Absolute Time InPregroove codes, ATIP codes) that forms in the groove.
Background technology
Optic informating recording medium now, for example, CD-R, CD-RW, DVD-R, DVD-RW etc. can write CD, and magneto-optic disk (MO-disk) and similar recording medium etc., and its wiring method is to form the pre-groove that forms usually earlier on this recording medium.On this groove, be marked with the presumptive address sign indicating number, ATIP sign indicating number for example, be used for providing the foundation of tracking, and then assist recording/reading data to optical information recorder/transcriber (Optical informationrecording/reproducing apparatus) (for example CD writer).Basically, above-mentioned presumptive address sign indicating number is represented with time value.Use the pre-relevant existing method that forms the wiring method of groove and presumptive address sign indicating number about optic informating recording medium, please refer to United States Patent (USP) the 5th, 226, No. 027, and " Compact Disc Recordable System Description " (yellow book of being published in 1997 of Philip company, the third edition), its detailed technology content is not given unnecessary details at this.
Above-mentioned optic informating recording medium, can abide by standard mostly, provide information, as the recommended value of the maximum storage capacity of this optic informating recording medium about the presumptive address sign indicating number (Last possible predetermined address code) that may exist at last.Usually to information, can be recorded in advance in the file administration zone on this optic informating recording medium about the presumptive address sign indicating number that may exist at last.With CD-R is example, its standard is done in the yellow book of standard, and the full and accurate information of the last possibility of indication ATIP sign indicating number of having put down in writing is as the 3rd specific information (Special information 3).But what must emphasize is, above-mentioned information about the presumptive address sign indicating number that may exist at last only is recommended value to maximum storage capacity that should optic informating recording medium, but not actual maximum storage capacity.Yet under truth, optic informating recording medium existing at last outside the presumptive address sign indicating number, still has the presumptive address sign indicating number after manufacturing is finished mostly.
General utilize optical information recorder/transcriber with data recording to optic informating recording medium the time when user's plan, the information about the presumptive address sign indicating number that may exist at last can be judged in advance and read to optical information recorder/transcriber, and then be foundation with this pairing maximum storage capacity of presumptive address sign indicating number that may exist at last (only being the recommended value of maximum storage capacity), to carry out the program of data recording.
Yet when practical application, the data volume that the user plans to be recorded on the optic informating recording medium usually can be above the pairing maximum storage capacity of presumptive address sign indicating number (recommended value) may exist at last.With CD-R is example, is 74 minutes according to the pairing maximum storage capacity of presumptive address sign indicating number that may exist at last that specification provided.But note, single with regard to CD-R, whenever write down one minute data more, promptly be equivalent to write down the data of 9.2 megabits more.The last possibility presumptive address sign indicating number of following specification to provide that is to say, if as the maximum storage capacity of optic informating recording medium, can be wasted memory capacity.
More unfortunately, when above-mentioned situation takes place, if record data with once finish (Disk-at-once, DAO) pattern is carried out, and the data recording failure then can take place; (Track-at-once, TAO) pattern is carried out, and the failure of the last item track record then can take place, or waste memory capacity if record data are with a track.
At above-mentioned situation, existing some optical information recorder/transcribers can offer the function that the user ignores the maximum storage capacity of advising according to specification, and the data volume that the user planned to write down directly is recorded on the optic informating recording medium.Though said method is practical, convenient, but because optical information recorder/transcriber is not known the maximum storage capacity of the optic informating recording medium reality utilized yet, therefore if plans the data volume of record greater than the maximum storage capacity of this optic informating recording medium reality, can cause this time to be write down and fail.
Summary of the invention
Therefore, an object of the present invention is to determine the maximum storage capacity of optic informating recording medium reality, so that effectively utilize the memory capacity of this optic informating recording medium.
The invention provides a kind of method that is used for the maximum storage capacity of definite optic informating recording medium, and especially, this optic informating recording medium has pre-formation groove, pre-form on groove and is marked with the presumptive address sign indicating number at this, for example, form the interior absolute time code of groove in advance.By it, effectively utilize the memory capacity of this optic informating recording medium.
According to a first advantageous embodiment of the invention, a kind ofly be used for determining that the method for the maximum storage capacity of optic informating recording medium is provided.This optic informating recording medium has pre-formation groove, is marked with a plurality of continuous presumptive address sign indicating numbers this pre-formation on the groove.Method according to a first advantageous embodiment of the invention, at first, along this pre-formation groove continuous sweep, a last in esse presumptive address sign indicating number in these a plurality of presumptive address sign indicating numbers is detected.Subsequently, a time value of detected last in esse presumptive address sign indicating number representative is expressed as the maximum storage capacity of this optic informating recording medium.
According to second preferred embodiment of the present invention, a kind ofly be used for determining that the method for the maximum storage capacity of optic informating recording medium is provided.This optic informating recording medium has pre-formation groove, is marked with a plurality of continuous presumptive address sign indicating numbers this pre-formation on the groove.One predetermined information is recorded on this optic informating recording medium and indicates a presumptive address sign indicating number that may exist at last in these a plurality of presumptive address sign indicating numbers.According to second preferred embodiment of the present invention, at first, extract this predetermined information from this optic informating recording medium.Then, according to the predetermined information that is extracted, scanned along forming groove in advance, and hunted out the presumptive address sign indicating number that this may exist at last.Subsequently, from this presumptive address sign indicating number that may exist at last, continued scanning along forming groove in advance, a last in esse presumptive address sign indicating number in these a plurality of presumptive address sign indicating numbers is detected.At last, a time value of detected last in esse presumptive address sign indicating number representative is expressed as the maximum storage capacity of this optic informating recording medium.
According to the 3rd preferred embodiment of the present invention, a kind ofly be used for determining that the method for first maximum storage capacity of first optic informating recording medium is provided.This method utilizes second maximum storage capacity of second optic informating recording medium to determine, second maximum storage capacity of this second optic informating recording medium is determined in advance and provided in advance.According to the 3rd preferred embodiment of the present invention, at first, judge whether this first optic informating recording medium is identical with this second optic informating recording medium.Then, if judged result certainly, determine that then this first maximum storage capacity equals this second maximum storage capacity.
Description of drawings
Can be further understood according to the following detailed description and accompanying drawings about the advantages and spirit of the present invention.
Fig. 1 illustrates the structure that can use optical information recorder/transcriber 1 of the present invention.
Fig. 2 illustrates the flow process of first preferred embodiment of the present invention.
Fig. 3 A illustrates the flow process that pre-formation groove is scanned and judges a specific embodiment of last in esse presumptive address sign indicating number.
Fig. 3 B illustrates the flow process that pre-formation groove is scanned and judges another specific embodiment of last in esse presumptive address sign indicating number.
Fig. 3 C illustrates the flow process that pre-formation groove is scanned and judges another specific embodiment of last in esse presumptive address sign indicating number.
Fig. 4 illustrates the flow process of second preferred embodiment of the present invention.
Fig. 5 illustrates the flow process of the 3rd preferred embodiment of the present invention.
Embodiment
See also shown in Figure 1, disclosed for using the structure and the electronic package synoptic diagram of optical information recorder/transcriber 1 of the present invention in Fig. 1.In this illustrated example, the form under this optical information recorder/transcriber 1 is recorded on the optic informating recording medium 116 with optical mode for possessing the standard CD form or the signal of RDAT form with one.This optic informating recording medium 116 can be for for example providing the form of the radioinduction layer of being made up of a phase change material or a dyestuff.
This optic informating recording medium 116 also provides tracking modulation (Tracking modulation), as servo tracking (Servo tracking), is used to assist recorded information patterns (Information pattern).This tracking modulation is often carried out with the form of waving track (Wobble track), just is pre-formed one and waves groove (Wobble pregroove) to wave track used for this on this optic informating recording medium 116.Wave in the track at this, frequency is modulated into consistent with an address signal, and on behalf of this, this address signal wave in the track presumptive address sign indicating number of mark in advance, for example the address of form such as ATIP sign indicating number.
The optical read/write head 105 of one common type is placed in the reverse side of this optic informating recording medium 116.This optic informating recording medium 116 is around one 102 rotation, and this read/write head 105 can be by locating device the moving radially along relative this recording medium 116 of a common type.As shown in Figure 1, the embodiment of this locating device can be made up of a motor 103 and a main shaft 104.If need on the function, this read/write head 105 can be used to recorded information patterns, and can be used to read information pattern.In order to reach the required function of above-mentioned read/write head 105, this read/write head 105 comprises the semiconductor laser instrument, is used to produce a radiation laser beam 107a, and the intensity of this radiation laser beam 107a can change by a drive circuit 107a.
In known method, the servo tracking that this radiation laser beam 107a aims at this optic informating recording medium 116.This radiation laser beam 107a can be returned by these optic informating recording medium 116 partial reflections, the radiation laser beam that is reflected be modulated into this wave follow the tracks of consistent, and if have an information pattern.Also be modulated into consistent with this information pattern.The radiation laser beam that is reflected directly is sent to the detecting device 108a of a pair of radioinduction, this detecting device 108a produce a pair of should radiation modulation read signal V1.This reads signal V1 and comprises one and waved the component that tracking produces and had the frequency of the theoretical sweep velocity of 22kHz nearly by this.
Control the motor speed of a motor 100 by a motor control circuit 108, make this read signal V1 by the frequency of waving the component that tracking produces substantially one at 22kHz.This motor 100 and a universal stage 101 constitute the device of this recording medium 116 of driving around axle 102 rotations.This reads signal V1 and is loaded on a testing circuit 109, and this testing circuit 109 reads signal V1 from this and derives the ATIP sign indicating number by waving the component that tracking produces, and loads ATIP sign indicating number to a control module.In one embodiment, this control module comprises microprocessor 110.And this reads signal V1 and is loaded on amplifying circuit 111, and this amplifying circuit 111 has the feature of high pass (High pass), reads among the signal VI by waving the component of signal that tracking produces so that stop this.The signal V1 that reads after low frequency component has been removed is loaded on this analysis circuit 65 immediately, the quality of the quality of 65 information patterns of pointing out to be read of this analysis circuit.One of this analysis circuit 65 example will be described in detail hereinafter.
Analytic signal Va in the output of this analysis circuit 65 also is loaded on this microprocessor 110.This optical information recorder/transcriber 1 further comprises CIRC commonly used (Cross interleavedReed-Solomon codes) coding circuit 112, and the signal Vi that this plan is recorded can be loaded on this CIRC coding circuit 112 by switch 115.This switch 115 is controlled by this microprocessor 110.This CIRC coding circuit 112 is placed with a traditional EFM modulator 113 and connects.This EFM modulator 113 itself has the output that is connected to this drive circuit 107.This drive circuit 107 is for commonly used and controllable form, and by this drive circuit 107, the parameter that influence is recorded the information pattern quality can be adjusted.For instance, one of above-mentioned parameter can be the intensity of this radiation laser beam during information pattern forms.Above-mentioned for example in, this information pattern is brought formation to have fixedly the radiate vein of continuous time subsequently, and can be one to influence information pattern quality important parameters the continuous time of pulses of radiation.
In the example that writes down in the magneto-optic mode, the magnetic field intensity that results from the recording medium zone of being scanned by radiation laser beam can be an important parameters.In order to reach the purpose that produces a test pattern, this pen recorder 1 can comprise a test signal generator 114, and this test signal generator 114 for example produces a random digital signal or produces the signal that a corresponding digital signal value is zero (numeral is peaceful).Yet, must notice that in principle this data-signal also can be used to form test pattern.The signal that is produced by this test signal generator 114 is loaded on this CIRC coding circuit 112 by this switch 115.This switch 115 is the switch of common type, and it is according to from the control signal of this control module 110, or transmits signal Vi and remove record, or transmits the output signal of this test signal generator 114.In addition, read high fdrequency component among the signal V1 in order to detect this, this optical information recorder/transcriber 1 also comprises a high-frequency detector 120 that is arranged between read/write head 105 and microprocessor 110.
The present invention determines the maximum storage capacity of this optic informating recording medium 116 or similar optic informating recording medium etc. according to the last in esse presumptive address sign indicating number (Last physical addresscode) in the presumptive address sign indicating number that detects this optic informating recording medium 116 or similar optic informating recording medium etc.What need emphasize is, above-mentioned optic informating recording medium 116 or similarly optic informating recording medium have pre-formation groove, and be marked with a plurality of continuous presumptive address sign indicating numbers, for example ATIP sign indicating number etc. this pre-formation on groove.Below will according to several preferred embodiments of the present invention is described in detail in detail, clearly point out spirit of the present invention and feature with this optic informating recording medium 116 as explaining orally example.
Flow process according to a first advantageous embodiment of the invention is illustrated in Fig. 2.This first preferred embodiment is used for determining the maximum storage capacity of above-mentioned optic informating recording medium 116 or similar optic informating recording medium etc.According to a first advantageous embodiment of the invention, execution in step S20 at first sets as initial condition etc.Then execution in step S22 carries out continuous scanning along the pre-formation groove of this optic informating recording medium 116.Follow execution in step S24, step S24 judges whether to detect a last in esse presumptive address sign indicating number in these a plurality of presumptive address sign indicating numbers.
If step S24 judged result is then got back to step S22 for negating.If step S24 judged result is for affirming that just this last in esse presumptive address sign indicating number is detected, then execution in step S26.Step 26 is expressed as a time value of detected last in esse presumptive address sign indicating number representative the maximum storage capacity of this optic informating recording medium 116.
With the application note example of a CD-R as above-mentioned first preferred embodiment, if is 86 minutes according to first preferred embodiment to the time value of its detected last in esse presumptive address sign indicating number representative, then the maximum storage capacity with this CD-R is expressed as 86 minutes.
The method of the judgement that detects about this last in esse presumptive address sign indicating number among the program that scans among the step S22 and the step S24 has following several mode.In one embodiment, as shown in Figure 3A, step S22 detects this a plurality of presumptive address sign indicating numbers one by one to the execution in step S30a1 of step S24 elder generation.Then execution in step S30a2 judges whether to detect the last in esse presumptive address sign indicating number in these a plurality of presumptive address sign indicating numbers.If step S30a2 judged result has promptly been finished step S22 to step S24 for certainly.If step S30a2 judged result is then got back to step S30a1 for negating.
Above-mentioned this a plurality of presumptive address coding modes that detect one by one can guarantee accurately to detect last in esse presumptive address sign indicating number, but time-consuming quite.Therefore, can adopt the more time saving practice of another kind, shown in Fig. 3 B, in another specific embodiment, step S22 is that fixed intervals detect this a plurality of presumptive address sign indicating numbers to the execution in step S30b1 of step S24 elder generation with presumptive address intersymbol distance.Then execution in step S30b2 judges whether still can detect the presumptive address sign indicating number.If step S30b2 judged result then can arrive step S30b1 for certainly.If step S30b2 judged result is for negative, then execution in step S30b3 is considered as this last in esse presumptive address sign indicating number with the presumptive address sign indicating number that is detected at last.
Above-mentioned is the mode that fixed intervals detect these a plurality of presumptive address sign indicating numbers with presumptive address intersymbol distance, though can shorten the time of detection, can't accurately detect last in esse presumptive address sign indicating number.Therefore, can comprehensive above-mentioned dual mode, come these a plurality of presumptive address sign indicating numbers are done detection, shown in Fig. 3 C, in another specific embodiment, step S22 is that fixed intervals detect this a plurality of presumptive address sign indicating numbers to the execution in step S30c1 of step S24 elder generation with presumptive address intersymbol distance.Then execution in step S30c2 judges whether still can detect the presumptive address sign indicating number.If step S30c2 judged result then can arrive step S30c1 for certainly.If step S30c2 judged result is for negative, then execution in step S30c3 serves as to detect starting point with the presumptive address sign indicating number that is detected at last.Then execution in step S30c4 detects the presumptive address sign indicating number that these a plurality of presumptive address sign indicating numbers are continued one by one.Then execution in step S30c5 judges whether to detect this last in esse presumptive address sign indicating number.If step S30c5 judged result has promptly been finished step S22 to step S24 for certainly.If step S30c5 judged result is then got back to step S30c4 for negating.By it, can shorten the time of detection, and can accurately detect last in esse presumptive address sign indicating number.
As previously mentioned, understand the predetermined information that writes down about the presumptive address sign indicating number that may exist at last on the general optic informating recording medium.Another practice of the present invention promptly is applied to the predetermined information about the presumptive address sign indicating number that may exist at last, and detailed process is specified in second preferred embodiment.Flow process according to a second, preferred embodiment of the present invention is illustrated in Fig. 4.This second preferred embodiment is used for determining the maximum storage capacity of above-mentioned optic informating recording medium 116 or similar optic informating recording medium etc., and write down a predetermined information on this optic informating recording medium 116, this predetermined information is indicated a presumptive address sign indicating number that may exist at last in these a plurality of presumptive address sign indicating numbers.According to second preferred embodiment of the present invention, execution in step S40 at first sets as initial condition etc.Then execution in step S42 extracts this predetermined information from this optic informating recording medium 116.Then execution in step S44 according to the predetermined information that is extracted, along formation groove scanning in advance, and hunts out the presumptive address sign indicating number that this may exist at last.Then execution in step S46 is a starting point with this presumptive address sign indicating number that may exist at last.Then execution in step S47 continued scanning along forming groove in advance.Follow execution in step S48, step S48 judges whether to detect a last in esse presumptive address sign indicating number in these a plurality of presumptive address sign indicating numbers.
If step S48 judged result is then got back to step S47 for negating.If step S48 judged result is for affirming that just this last in esse presumptive address sign indicating number is detected, then execution in step S49.The time value that step S49 changes representative with detected last in esse presumptive address sign indicating number is expressed as the maximum storage capacity of this optic informating recording medium 116.
The method of the judgement that detects about this last in esse presumptive address sign indicating number among the program that scans among the step S47 and the step S48 can adopt the step S30a1 shown in Fig. 3 A to step S30a2.Maybe can adopt the step S30b1 shown in Fig. 3 B to step S30b3.Maybe can adopt the step S30c1 shown in Fig. 3 C to step S30c5.
In order to use the present invention more expediently, another practice of the present invention is to determine in advance the maximum storage capacity of all types of optic informating recording mediums of good each manufacturer's manufacturing, and with the form information (containing type information, manufacturing information) of all types of optic informating recording mediums of each manufacturer's manufacturing with and the information of pairing maximum storage capacity store away in advance.To planning to determine the optic informating recording medium of maximum storage capacity, elder generation's interpretation goes out the form information of this optic informating recording medium, again to the identical optic informating recording medium of breaking forth, data according to the maximum storage capacity of the corresponding all types of optic informating recording mediums that prestore in advance, directly determining and the pre-determined maximum storage capacity of the identical optic informating recording medium of this optic informating recording medium, is exactly the maximum storage capacity of this optic informating recording medium.About the above-mentioned practice, will determine in advance that below the optic informating recording medium of maximum storage capacity is an example, is specified in the 3rd preferred embodiment with detailed process.
Flow process according to the 3rd preferred embodiment of the present invention is illustrated in Fig. 5.The 3rd preferred embodiment is used to be identified for determining the maximum storage capacity of above-mentioned optic informating recording medium 116 or similar optic informating recording medium etc., to plan below to determine that the optic informating recording medium of maximum storage capacity is called first optic informating recording medium, the maximum storage capacity of this first optic informating recording medium then is called first maximum storage capacity.Method according to the 3rd preferred embodiment of the present invention is to utilize the maximum storage capacity of second optic informating recording medium (hereinafter referred to as second maximum storage capacity) to determine, this second maximum storage capacity is definite in advance and provides in advance.
According to the 3rd preferred embodiment of the present invention, execution in step S50 at first sets as initial condition etc.Then execution in step S52 judges whether this first optic informating recording medium is identical with this second optic informating recording medium.If the judged result of step S52 is for affirming that then execution in step S54 determines that this first maximum storage capacity equals this second maximum storage capacity.
In one embodiment, this first optic informating recording medium has first form information and is recorded on itself, about second form information of this second optic informating recording medium and provide in advance.Step S52 extracts this first form information from this first optic informating recording medium earlier, judge then whether this first form information equals this second form information, if judged result confirms then that for certainly this first optic informating recording medium and this second optic informating recording medium are identical.
In the practical application of the 3rd preferred embodiment, except second optic informating recording medium, the form information of all types of optic informating recording mediums of other each manufacturer's manufacturing and pairing maximum storage capacity are determined in advance and are provided in advance.If the words that the judged result of above-mentioned steps S52 is negative, then carry out contrast, the judgement of all types of optic informating recording mediums of this first optic informating recording medium and other each manufacturer's manufacturing, until judging and the identical optic informating recording medium of this first optic informating recording medium, determine that immediately first maximum storage capacity of this first optic informating recording medium equals the prior determined maximum storage capacity of optic informating recording medium identical with it.
About determining of the maximum storage capacity of all types of optic informating recording medium of this second optic informating recording medium and other each manufacturer's manufacturing, can come to determine respectively according to first preferred embodiment or second preferred embodiment of the present invention of the invention described above.In the maximum storage capacity process of all types of optic informating recording mediums of determining this second optic informating recording medium and other each manufacturer's manufacturing, the method of the judgement that detects about scanning sequence and this last in esse presumptive address sign indicating number to the pre-formation groove of optic informating recording medium can adopt the step S30a1 shown in Fig. 3 A to step S30a2.Maybe can adopt the step S30b1 shown in Fig. 3 B to step S30b3.Maybe can adopt the step S30c1 shown in Fig. 3 C to step S30c5.
Significantly, by above-mentioned detailed description to the preferred embodiments of the present invention, can clearly be seen that spirit of the present invention and principal character are to determine according to the last in esse presumptive address sign indicating number on the detected optic informating recording medium maximum storage capacity of this optic informating recording medium, to avoid loss by the determined maximum storage capacity of presumptive address sign indicating number that may exist at last.
According to the detailed description of above preferred embodiment, hope can be known description feature of the present invention and spirit more, and is not that above-mentioned disclosed preferred embodiment comes scope of the present invention is limited.On the contrary, its objective is hope can cover various changes and similarly be arranged in the present invention in the claim scope of planning to apply for.Therefore, above-mentioned about specific embodiments of the invention in, except being applicable to the CD-R of having mentioned, also can being embodied in CD-RW, DVD-R, DVD-RW, MO widely and having on the CD of similar function.The scope of wishing the claim that the present invention applies for should be according to the above-mentioned the wideest explanation of explanation do, so that make it cover all possible change and similarly arrangement.
Claims (12)
1. method that is used for determining first maximum storage capacity of first optic informating recording medium, described method utilizes second maximum storage capacity of second optic informating recording medium to determine, described second maximum storage capacity determines in advance and provides in advance that described method comprises the following step:
(a) judge whether described first optic informating recording medium is identical with described second optic informating recording medium;
(b) if the result of step (a) for certainly, determines that then described first maximum storage capacity equals described second maximum storage capacity.
2. the method for claim 1, wherein said first optic informating recording medium has first form information and is recorded on itself, second form information about described second optic informating recording medium provides in advance, and step (a) is carried out through the following steps:
(a1) extract described first form information from described first optic informating recording medium;
(a2) judge whether described first form information equals described second form information; And
(a3) if the result of step (a2) for certainly, confirms that then described first optic informating recording medium and described second optic informating recording medium are identical.
3. method as claimed in claim 2, wherein said second optic informating recording medium has pre-formation groove, is marked with a plurality of continuous presumptive address sign indicating numbers on described pre-formation groove, and described second maximum storage capacity is determined through the following steps:
(c) along the continuous sweep of described pre-formation groove, a last in esse presumptive address sign indicating number in these a plurality of presumptive address sign indicating numbers is detected; And
(d) time value with detected last in esse presumptive address sign indicating number representative is expressed as described second maximum storage capacity.
4. method as claimed in claim 3, a plurality of presumptive address sign indicating numbers that wherein are marked on the described pre-formation groove are the pre-absolute time code that forms in the groove.
5. method as claimed in claim 4, wherein step (c) is carried out through the following steps:
(c1) detect this a plurality of presumptive address sign indicating numbers one by one; And
(c2) these a plurality of presumptive address sign indicating numbers of continuous detecting are detected until described last in esse presumptive address sign indicating number.
6. method as claimed in claim 4, wherein step (c) is carried out through the following steps:
(c1) be that fixed intervals detect this a plurality of presumptive address sign indicating numbers with presumptive address intersymbol distance, be detected until a presumptive address sign indicating number that can be detected at last; And
(c2) the described last presumptive address sign indicating number that can be detected is considered as described last in esse presumptive address sign indicating number.
7. method as claimed in claim 4, wherein step (c) is carried out by the following step:
(c1) be that fixed intervals detect this a plurality of presumptive address sign indicating numbers with presumptive address intersymbol distance, be detected until a presumptive address sign indicating number that can be detected at last;
(c2) begin to detect one by one the last presumptive address sign indicating number of these a plurality of presumptive address sign indicating numbers from the described last presumptive address sign indicating number that can be detected, be detected until described last in esse presumptive address sign indicating number.
8. method as claimed in claim 2, wherein said second optic informating recording medium has pre-formation groove, on described pre-formation groove, be marked with a plurality of continuous presumptive address sign indicating numbers, one predetermined information is recorded on described second optic informating recording medium and indicates a presumptive address sign indicating number that may exist at last in these a plurality of presumptive address sign indicating numbers, and described second maximum storage capacity is determined through the following steps:
(c) extract described predetermined information from described second optic informating recording medium;
(d),, and hunt out the described presumptive address sign indicating number that may exist at last along described pre-formation groove scanning according to the predetermined information that is extracted;
(e) from the described presumptive address sign indicating number that may exist at last, continue scanning along described pre-formation groove, a last in esse presumptive address sign indicating number in these a plurality of presumptive address sign indicating numbers is detected; And
(f) time value with detected last in esse presumptive address sign indicating number representative is expressed as second maximum storage capacity.
9. method as claimed in claim 8, the a plurality of presumptive address sign indicating numbers that wherein are marked on the described pre-formation groove are the pre-absolute time code that forms in the groove, and are recorded in the interior absolute time code of pre-formation groove that the predetermined information indication on described second optic informating recording medium may exist at last.
10. method as claimed in claim 9, wherein step (e) is carried out through the following steps:
(e1) detect this a plurality of presumptive address sign indicating numbers one by one; And
(e2) these a plurality of presumptive address sign indicating numbers of continuous detecting are detected until described last in esse presumptive address sign indicating number.
11. method as claimed in claim 9, wherein step (e) is carried out through the following steps:
(e1) be that fixed intervals detect this a plurality of presumptive address sign indicating numbers with presumptive address intersymbol distance, be detected until a presumptive address sign indicating number that can be detected at last; And
(e2) the described last presumptive address sign indicating number that can be detected is considered as described last in esse presumptive address sign indicating number.
12. method as claimed in claim 9, wherein step (e) is carried out by the following step:
(e1) be that fixed intervals detect this a plurality of presumptive address sign indicating numbers with presumptive address intersymbol distance, be detected until a presumptive address sign indicating number that can be detected at last;
(e2) begin to detect one by one the last presumptive address sign indicating number of these a plurality of presumptive address sign indicating numbers from the detected presumptive address sign indicating number of described last energy, be detected until described last in esse presumptive address sign indicating number.
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| CN 200410103714 CN1629942A (en) | 2002-05-23 | 2002-05-23 | Method for determining maximum storage capacity of optical information recording media |
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| CN 200410103714 CN1629942A (en) | 2002-05-23 | 2002-05-23 | Method for determining maximum storage capacity of optical information recording media |
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| CN 02120412 Division CN1208765C (en) | 2002-05-23 | 2002-05-23 | Method of recording maximum storage capacity of medium used for determining optical informaiton |
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| CN (1) | CN1629942A (en) |
-
2002
- 2002-05-23 CN CN 200410103714 patent/CN1629942A/en active Pending
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