CN100342447C - Recording medium, recording/re production device, and recording/reproduction method - Google Patents
Recording medium, recording/re production device, and recording/reproduction method Download PDFInfo
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- CN100342447C CN100342447C CNB2004800000858A CN200480000085A CN100342447C CN 100342447 C CN100342447 C CN 100342447C CN B2004800000858 A CNB2004800000858 A CN B2004800000858A CN 200480000085 A CN200480000085 A CN 200480000085A CN 100342447 C CN100342447 C CN 100342447C
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Abstract
The present invention relates to a recording mudium, rscording/reproduction apparatus and recording/reproduction method. A recording medium can judge types of various discs and the write enabled/disabled state. A detection hole of a cartridge has opening/closing means which forms a substantially horizontal plane with respect to a reference plane of the cartridge at the position of the detection hole when the detection hole is in the closed state. Moreover, the cartridge has at least a first and a second detection hole. The second detection hole (H1) is opened/closed by the aforementioned opening/closing means while the first detection hole (H0) is always kept in the open state. In a disc drive device or a disc judgment method, the disc type and the judgment information content (such as write enabled/disabled state) by the detection hole are judged according to the open/closed state of one or more detection holes formed on the cartridge and the disc type detection result obtained by using the signal based on the reflection light from the recording medium mounted.
Description
Technical field
Recording medium, record and the reproducer and the dish that the present invention relates to a kind of form of the dish that holds in tray salver are determined method.
Background technology
In recent years, developed various recording mediums, and high density recording etc. has increased recording capacity.In the process of the new recording medium of research, the compatibility of important maintenance and recording medium in the past.
The result of this situation is, various dissimilar recording mediums are as the recording medium coexistence of a kind (group).
Be example with the mini disk (MD:MINI DISC) that now uses widely.Mini disk is that the purpose that is used for the record of sound is developed at first.At that time, provide thereon by the impression pit and write down a reproduction dish of all data and the dish of record and reproduction type.Record and the dish that reproduces type make and use the magneto-optic disk user side can recording musical by the magnetic field modulation system etc.
After this, the form that is called MD-Data is developed so that not only can write down and reproduce voice data, but can also write down and reproduce data that computing machine uses etc.In addition, developed recently and handled the dish (this dish is called Hi-MD) that more kinds of data and density have greatly increased.In addition, the new building that is called the new building of Hi-MD is developed.
Though these dishes are different from all mini disks on classification, these dishes are contained in the corresponding tray salver of essentially identical shape and size.These dishes can be encased in the record and reproducer (disc driving equipment) of supporting mini disk.
Yet, have conventional model certainly as the disc driving equipment of supporting mini disk, promptly only support the model of conventional disc-type.Though the dish of newtype can not be encased in the conventional model, operating mistake or data corruption can not be write or cause to conventional model under new form.
Therefore, need to prevent these problems at least, such as operating mistake and data corruption in the different combination of the various types of dishes in different generations, developed and disc driving equipment.
For this reason, the disc driving equipment side requires to determine effectively the model of the different dish of identical type.Conventional dish determines that technology for example is disclosed among open Hei 5-144165 of Jap.P. and the open Hei 8-321129 of Jap.P..
In addition, need to eliminate the problem that causes on the dish of up-to-date development in the model of routine.
Consider the support of conventional model, the management dish is write the problem particular importance of possibility (preventing erroneous erasure).
In the kind of mini disk system, indication the detection hole that whether provides is provided is offered tray salver.Being provided at slide block user in the tray salver by operation can open and close and detect the hole with select forbidden data state of writing (erroneous erasure prevents state) and the state that can write.
Point out in passing, be described among the open Hei.8-96552 of Jap.P., the open Hei.5-36234 of Jap.P., the open Hei 5-144165 of Jap.P. etc. based on these possibility detections of writing that detect the hole.
In order to prevent these problems, designed and seen from the model of routine the unsupported new building of model by the routine of disc driving equipment is set at and can not writes.
Yet, making conventional model use detecting the hole, people will appreciate that new dish all " can not write " in all, use as the disc driving equipment of new model and write the detection hole that possibility is determined.Therefore need provide and write another detection hole that possibility is determined.This makes new disc driving equipment have difficulties aspect the possibility determining to write based on the detection hole of the dish of routine again.
In addition, increase the increase that the detection hole has caused the pick-up unit on equipment side, see that from the cost angle this is unfavorable as new dish.It has also hindered reducing of size and thickness.
Therefore, along with the increase of disc-type, the data management of the writing possibility difficulty that becomes for example.In addition, disc driving equipment needs correctly to determine various types of dishes and carry out correct processing certainly.
Therefore, an object of the present invention is to carry out correct disc-type determines to determine with the correct possibility of writing.No matter whether disc driving equipment is new model or conventional model, according to the detection hole of various types of recording mediums etc., do not increase or change carry out under the situation of pick-up unit such as switch etc. this definite.
Summary of the invention
According to the present invention, provide a kind of recording medium as the indicator that in tray salver, holds.This recording medium comprises the detection hole on the precalculated position of the reference planes that are formed on tray salver; With the opening and closing device that open and close to detect the hole, and when detecting the hole and be in closed condition, on the position of detecting the hole, form plane with the reference planes basic horizontal of tray salver.
Recording medium has at least the first and detects the hole and the second detection hole; And second detect the hole and open and close by opening and closing device, and first detects the hole all is in open mode on all time.
The external form of recording medium is similar to substantially to be had at least the first and detects the outer disk box-like formula that another recording medium in hole is detected in hole and second on the precalculated position of the reference planes of the tray salver that holds dish, this recording medium and another recording medium belong to the classification of the recording medium that can be encased in identical equipment; The second detection hole indication of recording medium is forbidden writing when the second detection hole of recording medium is in open mode; And when first of another recording medium detects the hole and is in open mode first the detecting the hole indication and forbid writing of another recording medium, and second reflectivity that detects the hole display disc of another recording medium.
Second of recording medium detects the hole and opens and closes according to the operation of the operation projection on the precalculated position that is arranged on tray salver, and detect the direction of operating of opening and closing in hole based on second of the direction of operating recording medium of the operation projection of recording medium identical with direction of operating based on the opening and closing in the first detection hole of another recording medium of operation of the operation projection of another recording medium.
According to the material thickness of the opening and closing device that moves of operation of operation projection greater than at first material thickness that detects the part under the lower surface in hole.
According to the present invention, a kind of record and reproduction record and reproducer as the recording medium of one type dish in polytype dish are provided, this dish is contained in the tray salver of predetermined form.Record and reproducer comprise that detection is arranged on the open mode in a plurality of detections hole on the precalculated position of tray salver and at least one hole pick-up unit of closed condition; With optical signal radiation be enclosed in record and the reproducer recording medium and based on the reflected light that coils determine to be enclosed in write down and the tray salver of reproducer in the type of type of the dish that holds determine device; Determine device with the hole type of the hole type in detection hole on the precalculated position of determining to be arranged on tray salver based on the definite result who determines device by type.
At least one determined hole type indication forbids writing dish.
First detects the hole is defined on first precalculated position of tray salver, and the second detection hole is defined on second precalculated position of tray salver; Second open mode that detects the hole of recording medium of holding the dish of the first kind represents to forbid writing the state of dish; Hold first open mode that detects the hole of recording medium of the dish of second type and represent to forbid writing the state of dish, and second reflectivity that detects the hole indicating panel of recording medium that holds the dish of second type; And determine based on the definite result who determines device by type which kind of open mode in the detection hole of writing of coiling is forbidden in indication.
Based on the signal that the light from dish reflection detects, type determines that at least a detection in the detection of specific region of the detection of address structure of detection, recording medium of management information of detection, recording medium of the phase differential of the detection of device by the reflectivity that coils, signal and recording medium determines the type of dish.
Type determines that device determines the type of dish based on the testing result of the detection of the detection of the detection of the detection of reflectivity, phase differential, management information and structure.
Type determines that device determines the type of dish based on the testing result of the detection of the detection of the detection of reflectivity, management information and structure.
Type determines that device determines the type of dish based on the testing result of the testing result of the detection of the detection of management information and specific region and hole pick-up unit.
According to the present invention, a kind of record and reproduction record and reproducting method as the recording medium of one type dish in the dish of a plurality of types are provided, this dish is contained in the tray salver of predetermined form.Record and reproducting method comprise the open mode that detects a plurality of detections hole on the precalculated position be arranged on tray salver and the hole detection step of closed condition; With optical signal radiation be enclosed in record and the reproducer recording medium and based on the reflected light that coils determine to be enclosed in write down and the tray salver of reproducer in the type determining step of type of the dish that holds; Determine to be arranged on the hole type determining step of the hole type in the detection hole on the precalculated position of tray salver with definite result based on disc-type.
Determined hole type indicates whether to write dish.
Be defined in first on first precalculated position of tray salver and detect the setting in hole, and be defined in the setting that the hole is detected in second on second precalculated position of tray salver; First open mode that detects the hole of the dish of the first kind represents to forbid writing dish; Second open mode that detects the hole of the dish of second type is represented to forbid writing dish, and the reflectivity of the first detection hole indicating panel of the dish of second type.
Description of drawings
Accompanying drawing 1 be depicted as according to an embodiment of the present record and the calcspar of the example of the structure of reproducer.
Accompanying drawing 2A and 2B are depicted as the accompanying drawing that is used to explain according to the form of the dish of this embodiment.
Accompanying drawing 4 is depicted as the accompanying drawing that is used to explain the detection hole of only reproducing MD.
Accompanying drawing 6A and 6B are depicted as the accompanying drawing that is used to explain record and reproduces the detection hole of MD and high density MD type A.
Accompanying drawing 7 is depicted as the accompanying drawing that is used for explaining according to the detection hole of this embodiment high density MD type B/Type C.
Accompanying drawing 8A, 8B, 8C, 8D and 8E are depicted as the accompanying drawing that is used to explain according to the tray salver of high density MD type B/Type C of this embodiment.
Accompanying drawing 9A, 9B, 9C and 8D are depicted as and are used for explaining the accompanying drawing of mechanism of closing and open the detection hole of high density MD type B/Type C according to this embodiment.
Accompanying drawing 10A, 10B, 10C, 10D and 10E are depicted as and are used for explaining the accompanying drawing of mechanism of closing and open the detection hole of high density MD type B/Type C according to this embodiment.
Accompanying drawing 11A, 11B, 11C and 11D are depicted as and are used to explain according to the closed condition in the detection hole of high density MD type B/Type C of this embodiment and the accompanying drawing of the relation between the tray salver plane.
Accompanying drawing 12A and 12B are depicted as and are used to explain the improved accompanying drawing of opening and closing according to the mechanism in the detection hole of high density MD type B/Type C of this embodiment.
Accompanying drawing 13A and 13B are depicted as and are used to explain the improved accompanying drawing of opening and closing according to the mechanism in the detection hole of high density MD type B/Type C of this embodiment.
Accompanying drawing 14 is depicted as the accompanying drawing of the combination that is used to explain the key element determined according to the disc-type of this embodiment and definite method.
Accompanying drawing 15A, 15B and 15C are depicted as and are used to explain the accompanying drawing of determining based on reflectivity according to this embodiment.
Accompanying drawing 17 is depicted as the accompanying drawing that is used to explain the relation between dish depth of groove and phase differential.
Accompanying drawing 18A, 18B, 18C, 18D and 18E are depicted as the accompanying drawing that is used to explain the signal of determining based on phase differential.
Accompanying drawing 19A, 19B, 19C, 19D and 19E are depicted as the accompanying drawing that is used to explain the signal of determining based on phase differential.
Accompanying drawing 20 is depicted as the accompanying drawing of the relation between dish depth of groove and PI and push-pull signal.
Accompanying drawing 21A, 21B and 21C are depicted as the accompanying drawing that is used to explain the structure of only reproducing MD, record and reproduction MD and high density MD type A.
Accompanying drawing 22A, 22B and 22C are depicted as and are used to explain high density MD type B, only reproduce the accompanying drawing of the structure of high density MD and high density MD Type C.
Accompanying drawing 23 is depicted as the accompanying drawing of the P-TOC that is used to explain MD.
Accompanying drawing 24 is depicted as the accompanying drawing of the U-TOC that is used to explain MD.
Accompanying drawing 25A and 25B are used to explain the accompanying drawing of the regional structure of MD dish.
Accompanying drawing 26A and 26B are used to explain the accompanying drawing of the dissimilar address structure of MD.
Accompanying drawing 28 is depicted as the process flow diagram of determining method (2) according to the disc-type of this embodiment.
Accompanying drawing 29 is depicted as the process flow diagram of determining method (3) according to the disc-type of this embodiment.
Accompanying drawing 30 is depicted as the process flow diagram of determining method (4) according to the disc-type of this embodiment.
Accompanying drawing 31 is depicted as the process flow diagram of determining method (5) according to the disc-type of this embodiment.
Accompanying drawing 32 is depicted as the process flow diagram of determining method (6) according to the disc-type of this embodiment.
Accompanying drawing 33 is depicted as the accompanying drawing that is used to explain according to the detection hole of this embodiment.
Accompanying drawing 34 is depicted as the process flow diagram that possibility is determined processing of writing according to this embodiment.
Accompanying drawing 35 is depicted as the process flow diagram that possibility is determined processing of writing according to this embodiment.
Embodiment
Hereinafter recording medium and the disc driving equipment with mini disk system kind is that example is described the preferred embodiments of the present invention.To be described with following order.
The structure of record and reproducer (disc driving equipment)
Disc-type
The structure of storage unit
Tray salver detects the hole
Determine disc-type
Writing possibility determines to handle
The structure of record and reproducer (disc driving equipment)
Disc driving equipment as a kind of embodiment is to be used for mini disk (MD) system disk or to pass through magnetic field modulation the system record and the reproducer of the magneto-optic disk of record data thereon.Yet, record and reproducer not only with the music mini disk compatibility of popularizing, but also with have more high density recording and can be used for video data and the compact disc compatibility of the storage of various other data of computing machine use.
With reference now to the structure of accompanying drawing 1 description according to the record and the reproducer of present embodiment.
In accompanying drawing 1, shown record and reproducer 1 according to present embodiment is the equipment that can carry out data communication such as personal computer (or network) 100 with external unit.
For example, be connected to personal computer 100 by transmission line 101 such as USB cable etc., record and reproducer 1 play the external memory of personal computer 100.In addition, be connected to network by personal computer 100 or for example by being directly connected to the effect of network, record and reproducer 1 can down-load music and various data.Storage music and various data in record and the dish (MD) of reproducer 1 in being encased in storage unit 2.
On the other hand, even when record and reproducer 1 are free of attachment to personal computer 100 etc., write down and reproducer 1 for example plays AV (audio frequency) equipment.Record and reproducer 1 can record audio data and the video data (AV data) from inputs such as another AV equipment on the dish.In addition, equipment 1 can reproduce and the music data etc. of output record on dish.
Therefore, by being connected to personal computer 100 etc., can be used as general data storage device according to the record and the reproducer 1 of present embodiment.Equipment 1 also can be used alone as existing AV record and reproducer.
Record and reproducer 1 comprise storage unit 2, cache memory 3, USB interface 4, input-output processing unit 5, display unit 6, operating unit 7, system controller 8, ROM 9, RAM 10, cache management storer 11 and NV-RAM 12.
3 pairs of metadata caches that record the data on the dish or read from dish by storage unit 2 of cache memory by storage unit 2.Cache memory 3 is for example formed by D-RAM.
The task control that starts by system controller (CPU) 8 is write cache memory with data or from wherein reading.
When for example being connected to personal computer 100 by the transmission line 101 as USB cable, USB interface 4 carries out the processing of data transmission.
For example in the processing of record and the reproducer 1 input and output data that 5 execution of input-output processing unit will be write down and reproduce during separately as audiofrequency apparatus.
The whole record of system controller 8 control and reproducer 1 and control are write down and the communicating by letter of the personal computer 100 of reproducer 1 with being connected to.
The customizing messages that RAM 10 for example stores various management information and reads from dish by storage unit 2.For example, RAM 10 storage P-TOC data, U-TOC data, playlist data, FAT data, unique ID, hashed value etc.P-TOC data and U-TOC data are the information of management accounts music track on mini disk etc.Except the mode of management that is called P-TOC, U-TOC or P-TOP, meet and to have the FAT file system of structure therein by the compact disc of the mini disk system that supports according to the record and the reproducer 1 of present embodiment.Playlist is the information of the management address of the music data that obtains by the ATRAC system on compact disc etc. etc. etc.Playlist as a file logging in the FAT system.When packing compact disc into, FAT and playlist information also are read.Unique ID, hashed value etc. are to be used for the coding/decoding of the data transmission between record and reproducer 1 and personal computer 100 etc. and the information that checking is handled.
NV-RAM (non-volatile ram) is even the zone of 12 data of the time also not losing in outage as storage.
When for example following connection such as personal computer 100 grades, implement control by system controller 8.
For example the response dish is encased in storage unit 2, and system controller 8 locations of instruction 2 read management information etc. from dish, by cache memory 3 capturing informations, store this information then in RAM 10.
By reading the management information of P-TOC, U-TOC or P-TOP, system controller 8 can be caught the track record state of dish.
By unique ID and hashed value, system controller 8 can the execution dish checking and other processing or these hashed values are sent to personal computer 100 handle.
When request was read some data from personal computer 100, system controller 8 made storage unit 2 read this data.Yet, be stored in the data of being asked under the situation of cache memory 3, do not ask by storage unit 2 read datas.This situation is represented so-called cache hit.
When personal computer 100 is write some data, system controller 8 will send wherein data storage in cache memory 3 in request.Then, system controller 8 data that storage unit 2 will be stored in the cache memory 3 are recorded on the dish.
Point out that in passing data are recorded on the dish as minimum unit with family.For example, a family comprises 32 FAT sectors.
If the data volume that will write down by personal computer 100 requests such as grade is several sectors and less than a family, then carry out the processing that is called piecemeal.Specifically, system controller 8 at first makes storage unit 2 read to comprise the family of corresponding FAT sector.Family's data of being read are written in the cache memory 3.
Then, system controller 8 flows to cache memory 3 with FAT sectors of data (record data) by USB interface 4 so that be overwritten in corresponding FAT sectors of data family's data of storage from personal computer 100.
Then, system controller 8 family's data transfer that will be stored under the state of the required FAT sector that is rewritten in the cache memory 3 gives storage unit 2 as record data.Storage unit 2 will be write on the dish in the data in this family unit.
The description of preamble is to be used for for example passing to personal computer 100 and the record of related data and the control of reproduction in the process that personal computer 100 transmits.For example carry out the record of voice data of mini disk systems and the data transfer when reproducing by input-output processing unit 5.
Input-output processing unit 5 comprises that analoging sound signal input block as input system is such as line input circuit/microphone input circuit, A/D converter and digital audio-frequency data input block.Input-output processing unit 5 also comprises ATRAC condensing encoder/demoder.ATRAC condensing encoder/demoder is the circuit that is used for carrying out by the ATRAC system compression/decompression processing of voice data.Point out in passing, can be configured to write down and reproduce for example voice data of the compression of the different-format of MP3 naturally according to the record and the reproducer of present embodiment.In this case, record and reproducer can have the encoder/decoder of the voice data of the compression of supporting these forms.
Though be not particularly limited at present embodiment, the form that can write down with reproducible video data for example can comprise MPEG4 etc.Then, it is just enough that input-output processing unit 5 has the encoder/decoder that can support this form.
Input-output processing unit 5 comprises that further digital audio-frequency data output unit, D/A converter and simulated audio signal output unit as output system is such as line output circuit/earphone output circuit etc.
In addition, input-output processing unit 5 in this case comprises cryptographic processing unit 5a.Cryptographic processing unit 5a for example carries out encryption by predetermined algorithm to the AV data that are recorded on the dish.In addition, when the AV data of reading from dish were encrypted, encryption part 5a carried out the decoding processing that is used to decipher to the AV data as required.
Be input under the situation in the input-output processing unit 5 as input TIN at for example digital audio-frequency data (perhaps analoging sound signal) and audio data recording coiled as the processing of carrying out by input-output processing unit 5.The linear pcm digital voice data or the linear PCM voice data of the input that the simulated audio signal by A/D converter conversion input is obtained carry out the ATRAC compressed encoding, are stored in then in the cache memory 3.Then, with predetermined sequential from cache memory 3 (corresponding to the data cell of ADIP family) sense data to pass to storage unit 2.The pressure data that storage unit 2 is imported thus by predetermined modulating system modulation are recorded in these data on the dish then.
When reproducing the voice data of mini disk system from dish, storage unit 2 becomes the data demodulates of reproducing the data of ATRAC compression and will give cache memory 3 through the data transfer of ATRAC compression.Then, from cache memory 3, read and pass to input-output processing unit 5 through the data of ATRAC compression.The voice data that 5 pairs of input-output processing units are transported to compression is wherein carried out through the ATRAC compression coding to form the linear PCM voice data, exports linear pcm audio data from the digital audio-frequency data output unit then.Replacedly, input-output processing unit 5 converts the voice data that compresses to simulated audio signal so that the output of line output/earphone by D/A converter.
Notice that the record of accompanying drawing 1 and the structure of reproducer 1 are a kind of examples, for example, input-output processing unit 5 can comprise the I/O disposal system of not only supporting voice data but also supporting video data.
In addition, except USB interface, can also use another external interface to be connected with personal computer 100 such as IEEE1394.
Disc-type
The dish that is used as recording medium at record and reproducer 1 according to present embodiment for example is the dish of mini disk system.Specifically, record and reproducer 1 not only can be supported conventional small-sized audio disk, but also can support to write down the compact disc of the various types of data that are used for the computing machine use.
Hereinafter at first describe the classification belong to the mini disk system and be encased in this example record and the various types of mini disks in the reproducer 1.
For clear, term " only reproduces MD ", " record and reproduce MD ", " high density MD type A ", " high density MD type B ", " only reproducing high density MD " and " high density MD Type C " all are the titles that is used as the mini disk of various kinds.These titles only are used for describing in this manual.Various types of dishes are as follows.
Only reproduce MD and refer to that the purpose that is used for voice data that is commonly referred to as the prefabricated dish of master only reproduces MD.All data are by impression pit record.
Record and reproduction MD finger-type become the MD of magneto-optic disk, allow to carry out data recording and reproduction by the magnetic field modulation system, can be used for voice data.
Only reproducing MD and record and reproduction MD is the MD of the so-called first generation, is widely used as audio frequency MD now.
Point out that in passing MD-DATA is that the general data record that expansion is used as audio frequency after first generation MD uses development.In this manual, MD-DATA is used as and belongs to record and reproduce MD or only reproduce MD and treat.
After this, developed and met the MD of future generation that MD system and density have increased.They are called as high density MD.High density MD also is the dish that is called as " Hi-MD " as described in this, and they can be widely used for the data storage purpose.High density MD has realized the recording capacity above the twice of the capacity of first generation MD.
Nowadays high density MD has developed and several types.These types are called " high density MD type A ", " high density MD type B " and " high density MD Type C " as mentioned above.They are corresponding to recording medium according to an embodiment of the invention.
High density MD type A is the dish that is called " Hi-MD1 ".
High density MD type B is the dish that is called " Hi-MD1.5 ".
High density MD Type C is the dish that is called " Hi-MD3 ".
In the high density MD type B (Hi-MD1.5), designed use the impression pit only reproduce type.This type is called as " only reproducing high density MD " so that distinguish mutually with high density MD type B.
Notice that high density MD type B/Type C is corresponding to recording medium according to an embodiment of the invention.
Accompanying drawing 2A and 2B are depicted as the specification that defines the first generation MD that only reproduces MD, record and reproduction MD and MD-DATA and define high density MD type A, high density MD type B, only reproduce the specification of the high density MD of high density MD and high density MD Type C.
Shown in accompanying drawing 2A, as the form of first generation MD and MD-DATA, track space is 1.6 microns, and bit length is 0.59 micron/.Laser wavelength lambda=780 nanometers, the numerical aperture of object lens=0.45.
Record and reproduction MD utilization groove register system are as its register system.That is, record and reproduction MD use the groove that is formed on the panel surface as the track that writes down and reproduce.
As addressing system, record and the following system of reproduction MD utilization: its further groove (track) is formed by simple helix, and uses the swinging chute of the swing that forms as address information on the both sides of groove.
Point out that in passing in this manual, the specific address by recorded in wobbles is also referred to as ADIP (address in pregroove marks).
Only reproducing among the MD, do not forming groove, forming track, and address and data recording are together by the impression pit string.
These first generation MD uses EFM (8-14 conversion) system as the record data modulating system.First generation MD use ACIRC (senior intersection interleave Reed-Solomon code) is as error correcting system and use rotary-type data interleave.Data redudancy is 46.3%.
Data detection system is a detection system by turn.As disc driving system, use CLV (constant linear velocity).The CLV linear velocity is 1.2m/s.
Standard data rate when record and reproduction is 133kB/s.Recording capacity is 164MB (is 140MB for MD-DATA).
The data cell of family is the minimum data rewriting unit.Family comprises 36 sectors, is formed by 32 host sectors and four chainning sectors.
On the other hand, for high density MD, two kinds of specifications of current existence: the specification of high density MD type A and type B (comprise and only reproduce high density MD) and specification with high density MD Type C of higher density.
At first, in high density MD type A/ type B, track space is 1.5 to 1.6 microns, and line density is 0.437 micron/, and recording capacity is increased to 300MB.Transfer rate under standard speed is 4.37Mbps, and linear velocity is 2.4m/sec.
In high density MD Type C, track space is 1.25 microns, and line density is 0.16 micron/, and recording capacity is increased to 1GB.Transfer rate under standard speed is 9.83Mbps, and linear velocity is 1.98m/sec.
Point out in passing; though in accompanying drawing 2B, do not illustrate; use is considered suitable for RLL (1, the 7) PP of high density recording, and (RLL: sweep length restriction, PP: parity checking protects/forbids rmtr (repeating the minimum transit sweep length) as high density MD record data modulating system.Use has RS-LDC (Reed Solomon code interweaves) system of BIS (burst indication subcode) of higher calibration capability as error correcting system.Use the data interlace of piece finishing type.Data redudancy is 20.50%.
Data detection system is to use Viterbi (Viterbi) decode system of partial response PR (1,2,1) ML.
Point out that in passing RLL (1-7) modulation and RS-LDC error correcting system are for example to be disclosed in disclosed technology among Jap.P. open Hei 11-346154, the international patent application publication WO 00/07300 etc.
Disc driving system is CLV (constant linear velocity) or ZCAV (region constant angular speed).
The structure of storage unit
The example of the structure of storage area 2 shown in Figure 3.
The above-mentioned various dishes of dish 90 expressions in this accompanying drawing.Dish 90 is contained in the tray salver 91.
Be enclosed in dish 90 in the storage unit 2 to rotate it by Spindle Motor 30 by the CLV system drive.
The laser of optical head 20 output high-power levels is with the Curie temperature of heating track record to it when record.Optical head 20 produces the laser output of quite low power level to detect from catoptrical data by magnetic Kerr effect when reproducing.For this reason, though do not specifically illustrate, optical head 20 comprises the optical system and the photoelectric detector of detection of reflected light.Optical system comprises that laser diode, polarization beam apparatus, object lens etc. are as output unit.Be included in object lens in the optical head 20 for example by the diaxon mechanism supports so that in the radial direction of dish with towards dish or depart from the direction of dish and move.
In addition, though do not illustrate, provide thread motor and thread mechanism to be used for mobile in the radial direction whole optical head 20 and magnetic head 19 at dish.
Except the record that comprises optical head 20 and magnetic head 19 with reproduce head system and comprise the rotary drive system of Spindle Motor 30 that storage area 2 also comprises recording processing system, reproduction processes system, servo-drive system etc.
The recording processing system passes through first modulating system and carries out the parts of modulation (EFM modulation and ACIRC coding) and carry out the parts of modulation (RLL (1-7) PP modulation and RS-LDC encode) by second modulating system when writing down compact disc when being included in record first generation MD.
The reproduction processes system is included in to be reproduced first generation MD and carries out the parts of decoding (EFM separate be in harmonious proportion ACIRC decoding) of first modulating system and the decoding of carrying out second modulating system when reproducing compact disc when (with the U-TOC of compact disc) (based on using partial response PR (1, RLL (1-7) demodulation of Data Detection 2,1), Veterbi decoding and RS-LDC decoding) parts.
Flow to RF amplifier 22 by optical head 20 from the information of coiling 90 the resulting reflected light of laser beam spoke and being detected (photocurrent that obtains by the detection laser reflected light by photoelectric detector).
22 pairs in RF amplifier is input to wherein detection information and executing current/voltage conversion, amplification, matrix computations etc.RF amplifier 22 extracts and reproduces the RF signal as information reproduction, tracking error signal TE, focus error signal FE, groove information (as the ADIP information of the record of the track wobble on dish 90) etc.
When reproducing first generation MD, handle by EFM demodulating unit 25 and ACIRC demoder 26 by the reproduction RF signal that the RF amplifier is obtained.
Specifically, the RF signal binary of reproduction changes into the EFM train of signal, carries out the EFM demodulation by EFM demodulating unit 25 then.The RF signal that reproduces further carries out error correction by ACIRC demoder 26 and deinterleave (deinterleave) is handled.Therefore, on this time point, the RF conversion of signals of reproduction is the ATRAC packed data.
In addition, when reproducing first generation MD, selector switch 27 is selected the B contact surface side, and the ATRAC packed data of demodulation is exported as reproducing data from coiling 90.That is, the data of compression from storage unit 2 outputs, flow to the cache memory 3 in accompanying drawing 1 by data buffer 33 then.
On the other hand, when reproducing compact disc, handle by RLL (1-7) PP demodulating unit 23 and RS-LDC demoder 24 by the reproduction RF signal that RF amplifier 22 obtains.
Specifically, RLL (1-7) PP demodulating unit 23 passes through to use the Data Detection of PR (1,2,1) and Veterbi decoding from reproducing the reproduction data of RF signal acquisition as RLL (1-7) code string.RLL (1-7) PP 23 couples of RLL of demodulating unit (1-7) code string is carried out RLL (1-7) demodulation then.In addition, carry out error correction and deinterleave processing by 24 couples of results of RS-LDC demoder.
In addition, when reproducing compact disc, selector switch 27 is selected the A contact surface side, and demodulated data is exported from coiling 90 as reproducing data.That is, demodulating data is exported from storage unit 2, flowed to the cache memory 3 in accompanying drawing 1 then by data buffer 33.
Flow to servo circuit 28 from the track error signal TE and the focus error signal FE of 22 outputs of RF amplifier.Groove information is fed to ADIP demodulating unit 31.
The ADIP address of being extracted of information as the specific address on dish flows to memory controller (CPU) 31.Memory controller 32 is carried out desired control based on the ADIP address and is handled.
Groove information flows to servo circuit 28 to carry out main axle servo control.
In addition, based on spindle error signals, tracking error signal and the focus error signal of carrying from RF amplifier 22 as indicated above or from the track skip instruction of memory controller 32, access instruction etc., servo circuit 28 forms various servo-control signals (tracking control signal, focus control signal, thread control signal, spindle control signal etc.).Servo circuit 28 is exported to motor driver 29 with formed servo-control signal.That is, servo circuit 28 responds servo error signals and instruction is carried out required processing such as phase compensation processing, gain process and desired value setting processing etc., forms various servo-control signals then.
Use this servo drive signal, carry out the CLV that is used to coil 90 focus control and tracking Control and be used for Spindle Motor 30 and control.
In the recording operation on dish 90, carry data for data buffer 33 from cache memory 3.
When recording first generation MD, selector switch 17 is connected to the B surface of contact, so ACIRC scrambler 15 and EFM modulating unit 16 work.
In this case, staggered and provide from the packed data of the audio treatment unit that does not illustrate by ACIRC scrambler 15 and error correction code, carry out the EFM modulation by EFM modulating unit 16 then.
Then, the EFM modulating data flows to head driver 18 by selector switch 17, and magnetic head 19 imposes on dish 90 based on the EFM modulating data with magnetic field, carries out data recording thus.
When recording compact disc, selector switch 17 is connected to the A surface of contact, so RS-LDC scrambler 13 and RLL (1-7) PP modulating unit 14 work.
In this case, staggered and provide with the error correction code of RS-LDC system from the high density data of cache memory 3 by RS-LDC scrambler 13, after this carry out RLL (1-7) and modulate by RLL (1-7) PP modulating unit 14.
Then, flow to head driver 18 as the record data of RLL (1-7) code string by selector switch 17, magnetic head 19 imposes on dish 90 based on modulating data with magnetic field, carries out data recording thus.
As indicated above laser driver/APC 21 makes laser diode carry out the laser beam firing operation when reproducing and when record, and also carries out so-called APC (automatic laser power control) operation.
Particularly, though do not illustrate, the detecting device of monitoring laser power is provided in the optical head 20.Monitor signal feeds back to laser driver/APC 21.The laser power of more current current laser power that obtains as monitor signal of laser driver/APC 21 and setting also makes the error between the laser power of current laser power and setting be reflected in laser-driven signal.As a result, laser driver/APC 21 implement control so that the laser power stability of from laser diode, exporting on setting value.
Point out that in passing for laser power, memory controller 32 is arranged on the value of setting reproduction laser power and recording laser power in the interior register of laser driver/APC21.
Based under the control of memory controller 32, carrying out above-mentioned operation (accessing operation, various servo operation, data write operation, data read operation and data transfer operations) from the instruction of system controller 8.
As mentioned below, hold tray salver 91 as the dish 90 of mini disk have the detection hole that is formed on wherein with indication whether write may with the reflectivity of dish.Particularly, indication writes whether opening and closing are operated by the user in possible detection hole.
Detecting hole determining unit 34 when dish is packed into has and is formed on locational switch SW 0 and the SW1 relative with the detection hole in the magnetic head 19.Detect bore closure when (or not existing) switch depress (connection).
Connection/dissengaged positions of switch SW 0 and SW1 flows to memory controller 32, and memory controller 32 can determine to detect the state in hole thus.
Point out in passing,, also can construct the example that system controller 8 wherein directly is controlled at the parts in the storage unit 2 though memory controller 32 is provided in the storage unit 2 in this structure example.
Tray salver detects the hole
Detection hole on the tray salver 91 that is provided at above-mentioned various types of dishes is described now.Accompanying drawing 4 to 7B is depicted as the lower surface and the side surface of the tray salver of various types of dishes.
Under the situation of the dish of the classification of the MD shown in the accompanying drawing 4 to 7B, dish 90 is contained in the inclined to one side square position box 91 and can rotates in tray salver 91.Tray salver 91 has sliding-type baffle plate 92.As shown in each accompanying drawing, coil 90 the insides and expose by opening baffle plate 92.Point out that in passing baffle plate 92 is closed usually with protective disc 90.When dish was encased in the disc driving equipment, baffle plate 92 was by the mechanism's sliding opening in panel.
Accompanying drawing 4 is depicted as and only reproduces MD.Under the situation of only reproducing MD, detect on the lower surface that hole H0 is formed on tray salver 91 on the precalculated position shown in the accompanying drawing 4.
Whether the position of detecting hole H0 is to be used to determine to write may.Detect (open mode that the detects hole H0) indication that exists of hole H0 and write impossible (write invalidate).
Under the situation of only reproducing MD, because it is invalid to write nature, therefore only form as the single hole that detects hole H0, the mechanism that opens and closes the hole is not provided.Therefore, on the side surface of tray salver 91 etc., do not provide the slide plate that opens and closes the hole.
Accompanying drawing 6A and 6B are depicted as record and reproduce the tray salver 91 of MD and high density MD type A.
In this case, provide detection hole H0 and H1.Whether as only reproducing among the MD, detecting hole H0 provides to write with setting and may.In this case, provide slide plate 93.Detection hole H0 is in the closed condition shown in the accompanying drawing 6A with in the open mode shown in the accompanying drawing 6B according to the position of slide plate 93.That is, the user can be as detecting hole H0 opening or closing as shown in accompanying drawing 6A or the 6B by slide plate 93, set thus with imitate/invalid.
The open mode that detects hole H0 means to be write impossiblely, and the closed condition that detects hole H0 means and writes possibility.Since detect the open mode indication of hole H0 write impossible, therefore detect hole H0 have with the situation of only reproducing MD under identical meaning.
The reflectivity of the second detection hole H1 display disc 90 in accompanying drawing 6A and 6B.Record and reproduction MD and high density MD type A are magneto-optic disks, therefore are different from and only reproduce MD, and only reproducing MD is to have the CD that forms the pit of impression thereon.Magneto-optic disk is compared with CD has lower reflectivity.For example, though CD has about 70% reflectivity, magneto-optic disk has about reflectivity of 15 to 30%.Therefore, disc driving equipment (storage unit 2) need be that CD or magneto-optic disk change internal signal and handle and be provided with (for example RF gain etc.) according to this dish.Detect hole H1 and be used for determining this information.
Detect the existence of hole H1 and represent lower reflectivity.Certainly, in this case, detect hole H1 and can not open or close by slide plate 93.That is, form fixing hole as detecting hole H1.
Under the situation of only reproducing MD, on the other hand, that detects hole H1 does not exist the expression high reflectance.
Shown in accompanying drawing 4 and accompanying drawing 6A and 6B, in first generation MD and high density MD type A, detect the existence of hole H0 or do not exist and the position is set to indicate whether to write and to detect position and the existence of hole H1 or do not exist and is set to the indication reflectivity.
On the other hand, in high density MD Type C and type B (with only reproducing high density MD) according to present embodiment, detect hole H0 and all be in open mode in all, whether detection hole H1 is used for setting writing may.
Accompanying drawing 7A and 7B are depicted as the tray salver 91 of high density MD type B/Type C.Shown in accompanying drawing 7A and 7B, provide and detect hole H0 and H1.Point out that in passing when detection hole H1 was slotted hole, this only was an example, as hereinafter describing, this hole can be circular, shown in accompanying drawing 6A and 6B.
Detect hole H1 and can change to closed condition and the open mode in accompanying drawing 7B in accompanying drawing 7A by slide plate 93.
Under the situation of high density MD type B/Type C, detect hole H1 and write possibility in the indication of the closed condition shown in the accompanying drawing 7A, and detect the open mode of hole H1 in accompanying drawing 7B indicate write impossible.
On the other hand, detect that hole H0 keeps open mode and with the location independent of slide plate 93.
Accompanying drawing 5 is depicted as in high density MD type B the tray salver that only reproduces high density MD 91 as the pit dish of impression.In this case, detecting hole H0 and H1 always forms as the fixed orifice of open mode.Under the situation of the high density MD type B/Type C in accompanying drawing 7A and 7B, fixing detection hole H0 is in open mode in all.
In accompanying drawing 5 only reproduce high density MD have as fixed orifice only reproduce high density MD be not the dish that can write because only reproduce high density MD.That is, the open mode of the detection hole H1 in accompanying drawing 7A and 7B indication write impossible.Under the situation of only reproducing high density MD of accompanying drawing, fixing detection hole H1 forms " open mode " and writes impossible (write invalidate) with indication.
Comparative drawings figs 4 and accompanying drawing 5, both shown in accompanying drawing 4 only reproduce detection hole H0 among the MD have (open mode) indication " write can not (write invalidate) ", and have (open mode) indication " write can not (write invalidate) " what only reproducing of accompanying drawing 5 detected hole H1 among the high density MD.
Therefore fixing detection hole H0 is formed on the high density MD type B/Type C of accompanying drawing 7A and 7B and only reproducing among the high density MD of accompanying drawing 5.Hole H0 provides the disc driving equipment that makes the routine of only supporting first generation MD (conventional model) to recognize high density MD type B/Type C and only reproduce high density MD and can not write.Conventional model is recognized in the locational open mode that detects hole H0 as indication " it is impossible to write "
Be fixed on open mode owing to detect hole H0, therefore the detection hole H0 in high density MD type B/Type C can not be used to write the possibility setting.Therefore, detect hole H1 and be used to write the possibility setting.
Only reproducing the situation of MD, record and reproduction MD and high density MD type A and in high density MD type B/Type C with only reproduce between the situation of high density MD not simultaneously, can not determine whether can write based on the state that detects the hole simply in the meaning that detects hole H0 and H1 according to the disc driving equipment of the present embodiment that data can be write high density MD type B/Type C.Therefore, as hereinafter describing in detail, the disc driving equipment (storage unit 2) that is encased in this example wherein at various types of MD detects disc-type, determines to detect the meaning of hole H0 and H1 then according to the type.
Point out in passing, also identical situation can take place at high density MD type B/Type C model of routine when only reproducing high density MD and be encased in wherein.Yet the executive logging operation on the dish of these types of conventional model is undesirable.Therefore, the detection hole H0 in the dish of these types is in open mode to address this problem in all.Therefore, Chang Gui Model Identification is somebody's turn to do " it is impossible to write ".
Because following reason is not wished the executive logging operation on the dish of these types of conventional model.
Conventional model can not mainly be because reasons such as data layout, physical characteristicss in the dish executive logging operation of these types inherently.Therefore, once in a while during the dish executive logging in these types, operating mistake, data corruption etc. may take place at the model of routine.Certainly some operating mistake may make troubles to the user.
In addition, the dish of these types adopted encrypt and verification method with the copyright of protected data.Conventional model can not be supported these methods.
Owing to these reasons, the conventional model of requirement is determined high density MD type B/Type C and is only reproduced high density MD and " can not write down " simply.
Hereinafter with reference accompanying drawing 8A to 11D describes the structure that detects hole H0 and H1 according to present embodiment in dish in detail.In this case, according to the dish of present embodiment corresponding to high density MD type B/Type C.
Accompanying drawing 8A, 8B, 8C, 8D and 8E are according to the backplan of the dish of this example, plan view, rear view, left side view and right side view.7A and 7B describe with reference to the accompanying drawings as mentioned, detect on the precalculated position on the lower surface side that hole H0 and H1 be formed on tray salver, shown in accompanying drawing 8A.
Shown in accompanying drawing 8E, slide plate 93 is formed on the side of tray salver.By operation slide plate 93, can only open and close and detect hole H1.
Accompanying drawing 9A, 9B, 9C and 9D are depicted as the side of tray salver and the A-A cross section in accompanying drawing 8A.Accompanying drawing 9A and 9B are depicted as the closed condition that detects hole H1.Accompanying drawing 9C and 9D are depicted as the open mode that detects hole H1.
Accompanying drawing 10A is depicted as when detecting hole H1 and be in closed condition from the detection hole H0 of the lower surface side of tray salver 91 and the guide wire of alternative shape of H1.Accompanying drawing 10B is depicted as B-B sectional view at this moment.
Accompanying drawing 10C is depicted as when detecting hole H1 and be in open mode from the detection hole H0 of the lower surface side of tray salver 91 and the guide wire of alternative shape of H1.Accompanying drawing 10D and 10E are depicted as D-D and C-C sectional view at this moment.
Be appreciated that from these accompanying drawings slide plate 93 comprises: recessed recess 93a on the thickness direction at tray salver on respect to the position of detecting hole H0; The convex extension part 93b that protrudes out on the thickness direction at tray salver on corresponding to the position of detecting hole H1; Keeping the slide position is the junction surface 93c of open mode and closed condition; With the operation projection 93d that carries out slide by the user.
From accompanying drawing 10A, 10B, 10C and 10E, be appreciated that, be recessed into the degree of direction of the thickness in the zone wideer at locational recess 93a than the hole dimension that detects hole H0 corresponding to the detection hole H0 in slide plate 93.
Therefore, be appreciated that from accompanying drawing 10A and 10C how detecting hole H0 regardless of the position of slide plate 93 does not close.Detect hole H0 and therefore in all, all be in open mode.
From accompanying drawing 10A, 10B, 10C and 10E, be appreciated that to have the size and dimension that is suitable for long detection hole H1 at locational convex extension part 93b corresponding to the detection hole H1 in slide plate 93.Shown in accompanying drawing 10A and 10C, convex extension part 93b is positioned at slotted hole, and irrelevant with sliding position.
Point out that in passing detecting hole H1 in this example is that convex extension part 93b is detecting in the H1 of hole slotted hole when slip so that allow.As detecting hole H1, the locational circular port at least that defines in the MD classification is enough.For example, it is just enough to form the hole on the position on the right side half of the long hole H1 of detection in accompanying drawing 10A.That is, detect hole H1 and need not be slotted hole.These situations hereinafter will be described as improvement.
State as the right side half of the slotted hole of closing by convex extension part 93b in accompanying drawing 10A is the closed condition that detects hole H1, and the state that is not positioned at the convex extension part 93b on the right side half of slotted hole as accompanying drawing 10C is the open mode that detects hole H1.
Shown in accompanying drawing 9B and 9D, the upper surface of the convex extension part 93b of slide plate 93 has formed the surface with the lower surface basic horizontal of tray salver 91.
Therefore, slide plate 93 forms all to keep in all and detects hole H0 detects hole H1 in open mode and opening and closing opening and closing mechanism.In addition, when detecting hole H1 and be in closed condition, the plane basic horizontal (plane with tray salver 91 on thickness direction has identical height substantially) of the plane by convex extension part 93b slide plate 93 (it will with the surface of detector switch (switch SW 1 in the accompanying drawing 3) contact of disc driving equipment) and tray salver 91.
Detection hole H0 is in the reason of open mode in all above describes.Detection hole H0 in first generation MD etc. whether be used for determining to write may, therefore detect hole H0 and be used to make conventional model understanding can not write according to the dish of this example.
The user can open and close and detect hole H1 to write the possibility setting.
Write possibility by utilization and set, be used at first detecting and eliminated the dish of giving according to this example at record and the detection hole H1 that reproduces the reflectivity of MD etc. and provide and be exclusively used in the new the 3rd needs that detect the hole of writing that possibility sets.
This means corresponding to the switch that detects the hole does not need to be increased in the compatible disc driving equipment.This equipment has the advantage that reduces size, thickness or cost.
When detecting hole H1 and be in closed condition, owing to following reason convex extension part 93b has formed plane with the plane basic horizontal of tray salver.
As indicated above, the position of detecting hole H0 and H1 is defined as identical with the position in various types of dishes respectively.In the disc driving equipment side, be formed in the detection hole determining unit 34 in the accompanying drawing 3 corresponding to the switch SW 0 that detects hole H0 with corresponding to the switch SW 1 that detects hole H1.Switch in the disc driving equipment of switch SW 0 and SW1 and conventional model is identical.
Accompanying drawing 11C is depicted as detection hole H0 and the state of H1 and the state of corresponding switch SW 0 and SW1 in record and reproduction MD (with high density MD type A), and accompanying drawing 11D is depicted as at the detection hole H0 and the state of H1 and the state of corresponding switch SW 1 and SW2 that only reproduce among the MD.
Record in accompanying drawing 11C and reproduction MD have the hole H0 of detection and H1.Detect hole H0 and on the thickness direction of tray salver, be approximately 3 millimeters deep.Detecting hole H0 opens and closes by slide plate 93.When detection hole H0 was in closed condition, the part of slide plate was apart from about 1 millimeters deep of lower surface (reference planes) by the 1. indicated tray salver 91 of dotted line.1 millimeter thickness corresponding to tray salver 91.Under the situation of record and reproduction MD, there is not convex extension part 93b as indicated above according to this example slide plate 93.Therefore, detecting hole H0 " closes " by slide plate on the position of 1 millimeters deep.
See that from reference planes the switch SW 0 that contacts with the part of slide plate is considered to connect on the position of 1 millimeters deep, therefore indication detection hole H0 is in closed condition.On the other hand, shown in this accompanying drawing, be considered to cut off with the discontiguous switch SW 0 of the part of slide plate on reference planes are seen position with 1 millimeters deep, therefore indication detects hole H0 and is in open mode.
The detection hole H1 of other of record and reproduction MD is for example apart from about 2 millimeters in the reference planes shown in this accompanying drawing.This is all to be in open mode because consider for only reproduce MD detection hole H1 in accompanying drawing 11D in all.
Shown in accompanying drawing 11D, only reproduce the detection hole H1 that MD does not form therein.As indicated above, record with reproduce MD in provide and detect hole H1 and only reproduce the different reflectivity of indication among the MD with never this detection hole H1.Therefore, switch SW 1 needs to judge whether the existence that detects hole H1 is closed condition.Therefore, the switch SW 1 (state of accompanying drawing 11D) that contacts with the lower surface (reference planes) of tray salver 91 is judged as connection, indicates this detection hole H1 to be in closed condition thus.On the other hand, as being judged as cut-out with switch SW 1 that reference planes do not contact as shown in the accompanying drawing 11, therefore indication detects hole H1 and is in open mode.
Therefore, switch SW 1 is designed to extend to connection/cut-out stroke less than the position of 2 millimeters deep (1 millimeters deep multiple spot) (detecting the strokes that open and close) scope from reference planes.
That is, be designed to make switch SW 0 and SW1 to have identical stroke, but when switch SW 0 and SW1 are in dissengaged positions, protrude out longer on the thickness direction of switch SW 0 at tray salver with the disc driving equipment of the routine of mini disk compatibility.
Consider following situation now: wherein use detection hole H1 to be used to write possibility and set, and as according in the dish of this example, opening and closing by slide plate 93.
Suppose slide plate 93 as record with reproduce that MD is the same to have a convex extension part 93b, for example when detecting hole H1 and be in closed condition, switch SW 1 contacts with locational slide plate apart from reference planes 1 millimeters deep.
Yet, the basic centre position of this state representation in the stroke range of the switch SW 1 of conventional model.Consider various foozles, when the dish according to this example is enclosed in the conventional model, determining that clearly in the connection/cut-out deterministic process be disadvantageous.
Corresponding to when being designed to have the stroke range that extends to from the position of distance reference planes 1 millimeters deep less than the position of 3 millimeters deep with switch SW 1 according to the detection hole in the compatible disc driving equipment in this example (for example storage unit in accompanying drawing 3 2) of the dish (high density MD type B/Type C) of this example, as switch SW 0, not disadvantageous in connection/cut-out deterministic process.Yet when only reproducing MD and be encased in in this example the disc driving equipment, switch SW 1 is pushed with respect to the lower surface (reference planes) of tray salver 91, does not detect hole H1 because only reproduce MD.In this case, switch SW 1 is pushed on the direction of the stroke range that surpasses design, and this may damage switch SW 1.
In order to prevent these, stroke need extend to cover reference planes and the distance reference plane scope less than the position of 3 millimeters deep.That is, with conventional model in the switch SW 1 of identical structure can use.
Therefore, in this example, slide plate 93 has convex extension part 93b, and when detection hole H1 was in closed condition, plane and the reference planes of convex extension part 93b are in basic horizontal, and were as indicated above.Specifically, accompanying drawing 11A and 11B are depicted as in open mode and closed condition according to the detection hole H1 in the dish of this example.When switch SW 1 contacted with the position of same reference planes (being convex extension part 93b) basic horizontal and therefore be in on-state, shown in accompanying drawing 11B, detection hole H1 was judged as and is in closed condition.Switch SW 1 with therefore do not contact with reference planes and when being in dissengaged positions, shown in accompanying drawing 11A, detect hole H1 and be judged as and be in open mode.
That is, be set at closed condition following advantage is provided by will detect hole H1 with convex extension part 93b with the reference planes basic horizontal.
At first, when slide plate 93 is closed detection hole H1, be used for having formed and the essentially identical plane of reference planes at the detection hole H1 of detection of reflected rates such as record and reproduction MD.When detecting hole H1 and open, detect hole H1 and be opened to such position: make switch SW 1 can detect full open position, can realize thus and the stroke that does not change switch SW 1 according to the switch SW 1 of the dish compatibility of this example by slide plate 93.That is, support disc driving equipment according to the dish of this example can use switch SW 0 and the SW1 with conventional model same structure.See that with regard to manufacturing cost and ease of design aspect this is favourable.
In addition, above-mentioned problem such as may damage can prevent during will only reproduce MD is encased in according to the disc driving equipment of this example according to the use in the disc driving equipment of this example of switch SW 0 identical and SW1 the time with conventional model.This is not exist switch SW 1 then to have the stroke of initial setting because hypothesis detects hole H1.
In addition, the stroke that does not need to change (lengthening) switch SW 1 is being favourable aspect size that reduces equipment and the thickness.
In above-mentioned example, detect hole H1 and be made into long so that the convex extension part 93b of slide plate 93 does not stop skateboarding.Yet, detect hole H1 and can make circle.The improvement of the opening and closing mechanism of this situation has been shown in accompanying drawing 12A and 12B and accompanying drawing 13A and 13B.At accompanying drawing 12A and 12B and accompanying drawing 13A and the 13B detection hole H1 shown in each in tray salver 91, providing circular port.
Accompanying drawing 12A and 12B are depicted as by slide plate 295 and the swivelling cover 296 formed examples that open and close mechanism.Slide plate 295 slides at the state shown in accompanying drawing 12A and the 12B by user's operation.
The shaft portion 296b of swivelling cover 296 is by bearing portions 297 pivotal support rotatably in tray salver 91.Bearing portions 298 pivotal support of another shaft portion 296c of swivelling cover by offering slide plate 295.
In the state of accompanying drawing 12A, be formed on overhang 296a on the swivelling cover 296 and be inserted into and detect among the H1 of hole, detect hole H1 by closing thus with the surface of the lower surface basic horizontal of tray salver 91.
Then, at slide plate 295 when the arrow a direction shown in accompanying drawing 12B is slided, push shaft part 296c, swivelling cover 296 is rotating on shaft portion 296b on the direction of arrow b thus, makes overhang 296a thus and detects hole H1 and separate to form open mode.
Accompanying drawing 13A and 13B are depicted as the example of the opening and closing mechanism that forms by slide plate 399 and lifting cover 398.Slide plate 399 slides at the state shown in accompanying drawing 13B and the 13B by user's operation.
The camshaft 398a of lifting cover 398 is assemblied among the cam path 399a that offers slide plate 399.
In the state of accompanying drawing 13A, be formed on circular overhang 398b on the lifting cover 398 and be inserted into and detect among the H1 of hole, detect hole H1 by closing thus with the surface of the lower surface basic horizontal of tray salver 91.
Then, when the arrow c direction shown in accompanying drawing 13B was slided, the camshaft 398a of lifting cover 398 slided in groove 399a at slide plate 299, and lifting cover 398 moves on the direction of arrow d thus.Overhang 398b is separated to form open mode with detection hole H1.
Use this opening and closing mechanism, for example, detecting hole H1 does not need to be slotted hole, but can for detect the same circle of hole H0.The circular advantage that detects hole H1 is to compare with slotted hole the area that dust etc. enters tray salver 91 and has reduced.
Determine disc-type
As indicated above, the detection hole H0 of tray salver 91 and the meaning of H1 are different and different according to the type of dish.Therefore, in dish 90 type that in this example disc driving equipment need be determined to coil when packing into to explain the state that detects hole H0 and H1.In addition, determine the type of dish yes necessity for record and reproduction processes.
Hereinafter describe the method (determining key element) of determining that disc-type is determined, description after this uses the type of the combination of various definite key elements to determine the instantiation of handling.
Accompanying drawing 14 is depicted as the relation between various definite key elements and the disc-type.
In this case, definite key element of classifying the reflected light information that use obtains by optical head 20 as be the dish reflectivity, the phase differential that causes by depth of groove, U-TOC content, P-TOC can, ADIP address structure and BCA (string cutting area).
Point out that in passing accompanying drawing 14 also shows as detection hole H0 that determines to write the key element that whether possible key element rather than disc-type determine and the state of H1, and show based on the state that detects hole H0 and H1 determine with imitate/invalid.This is because these are used for disc-type and determine in some cases.
As hereinafter describing in further detail, the part phase differential, U-TOC content, P-TOC content, ADIP address structure and the BCA that disc driving equipment in this example (storage unit 2) causes from the dish reflectivity, by depth of groove or the state-detection disc-type of detection hole H0 in addition and H1.Whether disc driving equipment also uses the opening/closing state and the determined disc-type that detect hole H0 and H1 to determine to write possible.
Disc-type has been shown in the lower part of accompanying drawing 14 has determined method (1) to (6), the combination of definite key element of using in single definite method is represented with ◎.Hereinafter describe single disc-type and determine the processing of method (1) to (6).
Definite key element of description dish reflectivity, the phase differential, U-TOC content, P-TOC content, ADIP address structure and the BCA that cause by depth of groove at first.
(dish reflectivity)
As indicated above, the reflectivity with CD of formation impression pit thereon approximately reaches 70%, and the reflectivity of the magneto-optic disk of execution magnetic field record approximately is low to moderate 15 to 30%.Therefore, as shown in Figure 14, only reproduce MD and only reproduce high density MD and have higher reflectivity (H), and record and reproduce MD and high density MD type A/ type B/Type C has lower reflectivity (L).That is,, can determine that this dish is only to reproduce MD or only reproduce high density MD or other types, promptly write down and reproduce a kind of in MD and the high density MD type A/ type B/Type C by determining reflectivity.
Reflectivity can be by as in the electric circuit inspection as shown in the accompanying drawing 15A.Accompanying drawing 15A is depicted as the photoelectric detector PD of optical receiving surface A, B, C and D with four separations.This photoelectric detector PD is arranged among a plurality of photoelectric detector PD in the optical head 20.
In accompanying drawing 15A totalizer 211,212 and 213 and comparer 214 for example be formed in the RF amplifier 22.
Consider now focus search, the object lens in this focus search optical head 20 in are forced towards dish 90 with leave to move with the execution focus servo on the direction of dish 90 and draw in.
Know that as everybody the focus error signal FE of astigmatism system for example is the signal (A+C)-(B+D) from the detecting device of four partitioned portions, for example shown in accompanying drawing 15A.This focus error signal FE has formed the S-deltoid around focus.Zero cross point in the linearity range of S-deltoid is a focus.Carry out focus servo control to be pulled into zero-point of crossing of S-deltoid as control.
Compare with the shift motion scope of object lens, the position range (towards and away from the position range of dish) that the object lens of S-deltoid wherein occur is very narrow.Therefore, for drawing in for the first time, force object lens to move the scope that obtains the S-deltoid to find to connect focus servo.This is a focus search.
In this case, above-mentioned have in focus with signal draw in the amplitude shown in accompanying drawing 15B in the scope.The focus error signal FE of scope that occurs the S-deltoid by the FOK signal indication in accompanying drawing 15C that this amplitude and predetermined reference value th are relatively obtained in this accompanying drawing, not illustrating.
Because the reflection light quantity that obtains by photoelectric detector PD is in the situation of the dish with high reflectance and have between the situation of dish of lower reflectivity differently certainly, therefore changes the difference setting when focus search, data reproduction etc.For example, if do not increase, then can not obtain satisfied signal from the gain of the reflected light signal of dish with lower reflectivity.
Utilize this fact, when not knowing that this dish is high reflectance dish or antiradar reflectivity dish, when promptly the reflectivity of determining at disc-type detects and will carry out, just enough to carry out the focus search operation corresponding to the setting (for example low gain setting) of high reflectance dish.
When dish is the high reflectance dish, with the focus search corresponding to the setting of high reflectance dish provide curve ratio as the solid line in accompanying drawing 15B as certain on a bit and signal.That is, the FOK signal becomes " H " at certain on a bit.
On the other hand, when dish is the antiradar reflectivity dish, only obtain low-level curve conduct and signal such as the dotted line in accompanying drawing 15.That is, in the cycle of focus search, do not detect the FOK signal.
Therefore, by can to detect the dish of being packed into be high reflectance dish or antiradar reflectivity dish to carry out the focus search operation corresponding to being provided with of high reflectance dish and determine whether to obtain the FOK signal in the process of focus search operation.
(phase differential that causes by depth of groove)
Produced at push-pull signal with as what reflected light information obtained according to the degree of depth that is formed on the groove (pit) on the dish and to have drawn in phase differential between the signal (and signal).
Consider and draw in the phase differential of signal with respect to as shown in Figure 14 push-pull signal, only reproduce MD, only reproduce high density MD and high density MD Type C and caused that (λ: phase place wavelength) is leading, and record and reproduce MD and high density MD type A/ type B has caused that 0 to λ/4 phase place is leading in λ/4 to λ/2.
Therefore, by determining phase differential, can determine that this dish is high density MD, only reproduces a kind of dish or the record in high density MD and the high density MD Type C and reproduce a kind of dish in MD and the high density MD type A/ type B.
For example the structure of accompanying drawing 16 enough is used for phase differential and determines.Can be distributed in optical head 20, RF amplifier 22 and the memory controller 32 etc. in the single part shown in this accompanying drawing.
When determining phase differential with this structure, to connect and the tracking servo cut-out by the focus servo that makes the object lens in optical head 20, object lens move to the neighboring of dish from the inside circumference of dish.
About by as the detection surfaces A of the photoelectric detector PD in the optical head as shown in the accompanying drawing 16 20, the photoelectric conversion signal that B, C and D detected, at first will add together by totalizer 228 and to be in the same place with at first adding from the signal that detects surperficial B and C by totalizer 229 from the signal that detects surfaces A and D.Then, totalizer 228 and 229 output each all flow to tracking error signal operating unit 221 and draw in signal operation unit 225.
Tracking error signal operating unit 221 calculates the push-pull signal P/P=(A+D)-(B+C) that obtains by the signal that deducts optical receiving surface B+C from the signal of optical receiving surface A+D as tracking error signal TE.Operating unit 221 flows to comparer 222 as the binarization device with tracking error signal TE.
Drawing in signal operation unit 225 will add the light summation signal (and signal) that together obtains by the signal from optical receiving surface A, B, C and D and flow to comparer 226 as the binarization device as drawing in signal PI.
D upset determine circuit 224 with from comparer 226 through the rising edge of the data PI comp ' of the binarization of conversion along the data TE comp ' that synchronously latchs from comparer 222 through the binarization of conversion.Be that the D upset determines that circuit 224 produces the definite result of disc-type and exports this result by detecting at PI signal and TE phase difference between signals.The D upset determines that circuit 224 for example is provided with in the memory controller 32.Memory controller 32 is determined phase differential based on definite result of the definite circuit 224 of D upset.
Accompanying drawing 17 be depicted as bundle point SP on MD part motion and put the TE signal of motion of SP and the reproduction waveform of PI signal corresponding to bundle.It is that phase differential is the situation of 90 degree with respect to PI signal delay 90 degree that accompanying drawing 17 is depicted as at the TE signal.
Accompanying drawing 18A, 18B, 18C, 18D and 18E are depicted as at dish 90 and are records and reproduce MD or the waveform that parts detected by accompanying drawing 16 during high density MD type A/ type B.D upset determine circuit 224 with through the rising edge of the data PI comp ' of the binarization of conversion along the data TE comp ' that synchronously latchs through the binarization of conversion, and export H thus.
Accompanying drawing 19A, 19B, 19C, 19D and 19E be depicted as dish 90 be only reproduce MD, the waveform that parts detected by accompanying drawing 16 when only reproducing high density MD or high density MD Type C.
In this case, D upset determine circuit 224 with through the rising edge of the data PI comp ' of the binarization of conversion along the data TE comp ' that synchronously latchs through the binarization of conversion, and export L thus.
With respect to comparing on polarity and be inverted with the situation (accompanying drawing 18B) of other groove dish (promptly write down and reproduce MD or high density MD type A/ type B), because high density MD Type C has the darker depth of groove of 160 to 180 nanometers as the phase place of drawing in signal PI (accompanying drawing 19B) of the tracking error signal TE (push-pull signal P/P) in the high density MD Type C of dish with groove.
As shown in Figure 20, the amplitude of tracking error signal (push-pull signal P/P) the depth of groove of 125 nanometers from+change to-.From the dish refractive index of the optical maser wavelength of 780 nanometers and 1.57, the depth d of determining to take place this polar switching is (780/4)/1.57.
Be appreciated that from description above upset determines that " H " that latch output or " L " of circuit 224 is results of the detection of phase differential as D.
Specifically, under the situation of the structure of accompanying drawing 16, D upset determine circuit 224 latch output as accompanying drawing 18A to 18E in when " H ", the dish 90 of being packed into produces 0 to λ/4 phase delay as the phase differential of drawing in signal PI with respect to push-pull signal P/P, therefore can determine to coil 90 is record and reproduction MD or high density MD type A/ type B.On the other hand, latch output when being " L " what circuit 224 was determined in D upset, the dish 90 of being packed into produces the phase delay of λ/4 to λ/2 as the phase differential of drawing in signal PI with respect to push-pull signal P/P, therefore can determine to coil 90 is only to reproduce MD, only reproduce a kind of in high density MD and the high density MD Type C.
Point out that in passing in this phase difference detection, owing to have excentricity in practice, therefore bundle point SP repeatedly moves to the inner periphery side of dish and the periphery avris of dish under the state that tracking servo does not have to connect.Therefore, because direct of travel need fix, so object lens or whole optical block (optical head) need be from for example moving to the neighboring with constant speed from inside circumference to surpass the amount of exercise that is caused by excentricity.
In addition, in this phase difference detection, guarantee that optical head 20 is arranged in the groove area of dish (will be described below) in advance.Do not have groove area owing to only reproduce MD and only reproduce high density MD, therefore the phase difference detection after the identification groove makes and is difficult to determine that dish is record and reproduces MD, high density MD type A/ type B or high density MD Type C.
(P-TOC/U-TOC)
Be well known that the mini disk system has locational P-TOC of being called on the inner periphery side that is recorded in dish and the management information of U-TOC.
The content of management information comprises information about disk type, and the content that therefore is called the management information of P-TOC and U-TOC can be used for disc-type and determines.
Before description is determined method based on the dish of management information, the regional structure of various dishes is described at first.
Accompanying drawing 21A be depicted as the regional structure of only reproducing MD from the inner periphery side of dish to the radial direction of the dish of periphery avris on the zone of belt-like form.
Shown in accompanying drawing 21A, the inner periphery side of dish is to introduce the district, has wherein write down P-TOC.The data field is formed on after the P-TOC.It is the voice data of unit record with track (music segments) in advance wherein that the data field has.The position in the address of the track that is write down, zone etc. is managed by P-TOC.The most peripheral avris of dish is the draw-out area.
Under the situation of record and reproduction MD, all zones all are the pit districts, by impression pit record data.
Accompanying drawing 21B is depicted as record and reproduces the regional structure of MD.
In this case, P-TOC and U-TOC are recorded in the introducing district on the inner periphery side.In the data field, by user side record and reproduction audio track.
Under the situation of record and reproduction MD, having only the P-TOC on the inner periphery side of introducing the district is the pit district with impression pit, and U-TOC, data field and draw-out area all are groove areas, realizes writing down and reproducing by magnetooptic recording.
The track that is recorded in the data field is managed by U-TOC, the record of the content response of U-TOC in the data field, wipes and edit rewriting.The position of P-TOC management fundamental region etc.
Accompanying drawing 21C is depicted as the regional structure of high density MD type A.The regional structure that is appreciated that high density MD type A from this figure is identical with the regional structure of record and reproduction MD.
Except the zone by P-TOC and U-TOC management, the file that is recorded in the data of audio frequency, video or other type in the data field passes through the FAT system management.
Accompanying drawing 22A is depicted as the regional structure of high density MD type B.
In this case, the inner periphery side of dish is MIRROR SITE (BAC: the string cutting area).In this case, form with recording scheduled ID with the composition of bar code form with radiation mode etc.
BCA has wherein write down P-TOC and U-TOC after introducing the district.The P-TOC district is the pit district with pit of impression.U-TOC district, data field and draw-out area all are groove areas, wherein can write down and reproduce.Also in this case, except zone, be recorded in data file in the data field by the FAT system management by P-TOC and U-TOC management.
Accompanying drawing 22B is depicted as and only reproduces high density MD.This be high density MD type B only reproduce type.Therefore, introduce the district and include only P-TOC.The all zones that comprise MIRROR SITE all are the pit districts.
Accompanying drawing 22C is depicted as the regional structure of high density MD Type C.
Also be in this case, MIRROR SITE (BCA) is formed on the interior perimeter sides.Introduce the district and have the management information that is called P-TOP rather than the P-TOC and the U-TOC of record therein.
Introducing district, data field and draw-out area all is groove area.
The regional structure of single disc has above been described.Describe based on this, describe based on the disc-type of P-TOC and U-TOC and determine.
Determining based on P-TOC at first described.
Accompanying drawing 23 is depicted as the structure of first sector (sector 0) of P-TOC family.
P-TOC sector 0 has 12-byte of sync pattern at its head, has the address (family address and sevtor address) of sector itself after this.Point out that in passing synchronous mode and address all are public in all sectors of mini-disc format.
The system identifier of nybble is recorded on the position of predetermined bite.
In addition, but indicator type, recording power, first track number, last track number, draw-out area start address, capability correction district start address, U-TOC start address and recording areas start address.That is, write down the information of directorial area structure and dish characteristic.
Then, provide pointer part and matrix section.Matrix section is formed by the part table, and management forms the start address/end address and the trajectory model information of the part of track in the part table.The part table is specified by the pointer (P-TN01 to P-TN0255) in pointer part, manages each track thus.
Pointer P-TN01 to P-TN0255 corresponds respectively to first track to the, 255 tracks.
Notice that track is managed by P-TOC under the situation of only reproducing MD.Under the situation of record and reproduction MD, each track is by pointer part and the matrix section management of the U-TOC that hereinafter will describe.
As indicated above, system identifier is recorded among the P-TOC.As system identifier, under the situation of first generation MD (only reproducing MD and record and reproduction MD), pass through ASCII character recorded information " MINI ".
On the other hand, under the situation of high density MD type B, the code of record indication high density MD (for example " Hi-MD ") is made system identifier.
Therefore, whether can determine at the disc-type shown in the accompanying drawing 14 based on the code " Hi-MD " of indication high density MD as the system identifier existence of P-TOC.
Specifically, when not having the code " Hi-MD " of indication high density MD, dish is only to reproduce MD, record and reproduction MD or high density MD type A.
When having the code " Hi-MD " of indication high density MD, dish is high density MD type B or only reproduces high density MD.
Shown in accompanying drawing 22C, high density MD Type C does not have P-TOC.Therefore, when P-TOC itself did not exist, this dish was a high density MD Type C.
Determining based on U-TOC then described.
The structure of first sector (sector 0) of the described U-TOC of accompanying drawing 24 family.
In addition, marker code, model code, first track number, last track number, the sector of using in U-TOC, dish sequence number and system identifier all are recorded on the predetermined byte location.
Then, provide pointer part and matrix section.Matrix section is formed by the part table, and management forms the start address/end address and the trajectory model information of the part of track in the part table.The part table is specified by the pointer in pointer part (P-DFA, P-EMPTY, P-FRA and P-TN01 to P-TN0255), manages each track thus.
Pointer P-TN01 to P-TN0255 corresponds respectively to first track to the, 255 tracks.
The defect area of pointer P-DFA management on dish.
Pointer P-EMPTY manages untapped part table.
The not recording areas (free zone) of pointer P-FRA management on the data field.
Record and reproduction MD allow record, wipe and edit trace.For this reason, U-TOC carries out the track management.The content of pointer part and part are shown response record/wipe/edit and are rewritten.
The code that serves as a mark, the code of mark distributed in record.Specifically, in high density MD type A/ type B, sign (the Hi-MD form: the form of the type A/ type B in accompanying drawing 2B) be recorded in the zone of marker code of the dish of indication high-density format.
Therefore, the type that can carry out as shown in accompanying drawing 14 based on this marker code information is determined.
Particularly, when not having the indication record and reproducing the code of MD form in U-TOC, dish is record and reproduces MD.
When not having the code of indication high density MD form in U-TOC, this dish is high density MD type A or high density MD type B.
Shown in accompanying drawing 22C, high density MD Type C does not write down U-TOC therein.Shown in accompanying drawing 21A and 22B, U-TOC itself does not exist and only reproduces MD and only reproduce among the high density MD.Therefore, when not having U-TOC, dish is high density MD Type C, only reproduces MD or only reproduce high density MD.
Point out that in passing under the situation of high density MD type A or high density MD type B, the information of indication high-density format is recorded in the part of each file (data-track) that is recorded in the data field.Therefore, this information can be used for similarly determining.
(BCA)
Be appreciated that from accompanying drawing 21A to 22C the type according to dish provides or do not provide BCA.In addition, disc-type exists as the information that is recorded among the BCA.Therefore, based on the existence of BCA or do not exist and therein the record information, can determine disc-type as shown in Figure 14.
Accompanying drawing 25A is depicted as the dish that does not have BCA, and accompanying drawing 25B is depicted as the dish of BCA.
Be appreciated that in the comparison by accompanying drawing 25A and 25B that BCA in accompanying drawing 25B is corresponding to as the radially bar code pattern in the zone of the inner periphery side of the radial position in the introducing district in accompanying drawing 25A.
Therefore BCA is the bar code pattern in radiation in the radial direction, can read bar code information and does not need specific tracking Control.
Bar code is used to be recorded in the code of indication " Hi-MD 1.5 " under the situation of high density MD type B and the code of indication " Hi-MD 3 " under the situation of high density MD Type C.
Based on the existence of BCA or do not exist with the information content of BCA and can carry out following determining.
When BCA did not exist, dish was record and reproduces MD, only reproduces MD or high density MD type A.
Exist and wherein write down the information of indication " Hi-MD 1.5 " at BCA, then this dish is high density MD type B or only reproduces high density MD.
Exist and wherein write down the information of indication " Hi-MD 3 " at BCA, then this dish is a high density MD Type C.
(ADIP address structure)
Also can carry out disc-type based on address structure determines.
The ADIP address is by groove swing sign.Therefore, do not form only reproducing MD and only reproduce high density MD and not having the ADIP address of groove thereon.Only reproduce MD and only reproduce high density MD and only have the stylistic address of subcode that is recorded in these data.
On the other hand, the dish that has a grooved area records the ADIP address thereon.For the dish with groove area, high density MD Type C has the ADIP address different with other dish.
Accompanying drawing 26A is depicted as record and reproduces the address format of MD and high density MD type B.Accompanying drawing 26B is depicted as the ADIP address format of high density MD Type C.
At first, in the ADIP of accompanying drawing 26A address format, an element address forms by 42, and this address comprises 4 bit synchronizations, 16 families number, 8 sector numbers and 14 CRC.
On the other hand, in the ADIP of accompanying drawing 26B address format, an element address forms similarly by 42, and this address comprises 4 bit synchronizations, 16 families number, 4 sector numbers and 18 ECC.
That is, the error correction decode system is different.Therefore, for example by carrying out the ADIP decoding and determining that whether this address can be extracted by the ECC processing, then can carry out as determining in the type as shown in the accompanying drawing 14.
Therefore, decoding by ECC after dish reproduces operation and ADIP decoding can address acquisition, and promptly this dish is a high density MD Type C.
Decoding by ECC after dish reproduces operation and ADIP decoding can not address acquisition, and then this dish is high density MD or high density MD type A/ type B.
In the time of can not obtaining ADIP information after dish reproduces operation, this dish is only to reproduce MD or only reproduce high density MD.
Above described based on the reflected light information that obtains by optical head 20 and from signal, coiled definite definite key element.Use the combination that these determine key element, can determine the six kinds of disc-types (only reproduce MD, record and reproduction MD, high density MD type A, high density MD type B, only reproduce high density MD and high density MD Type C) in the mini disk kind.
Represent to determine the combination of key element by ◎ in the bottom of accompanying drawing 14, these combinations make determine as disc-type that method (1) to (6) carries out that type determines may.
Determine that by disc-type a kind of method in the method (1) to (6) can carry out disc-type and determine.
Point out that in passing the Δ of importing represents that reflectivity does not need in the combination that type is determined in the disc-type of accompanying drawing 14 is determined reflectivity in the method (1) to (4).That is, in theory, the combination of the specific factor by using other is not carried out reflectivity and is detected and can carry out disc-type and determine.Yet,, therefore some process flow diagram that comprises that reflection detects is described hereinafter in that to consider when determining processing speed that reflectivity detects more favourable.
Determine that for reflectivity the above-mentioned reflectivity that carries out is determined not necessarily from reflected light information.For example, as indicated above, the detection hole H1 in only reproducing MD, record and reproduction MD and high density MD type A represents reflectivity.Therefore, can carry out reflectivity according to the combination of determining key element by detection hole H1 determines.
Hereinafter describe as determining that at the disc-type in the accompanying drawing 14 disc-type shown in the method (1) to (6) is definite and handle.
Point out that in passing the processing of each process flow diagram is the control and definite processing of carrying out by memory controller 32.
(disc-type is determined method (1))
Disc-type determines that method (1) is that reflectivity detection, phase difference detection and management information detect the combination of (P-TOC detects and U-TOC detects).
On behalf of disc-type, accompanying drawing 27 determine the processing of method (1).
In the disc-type of accompanying drawing 27 is determined to handle, in step F 101, at first determine reflectivity by above-mentioned method.When determining that the dish of being packed into is the high reflectance dish, handle proceeding to step F 104 to reproduce the P-TOC data.Whether the code " Hi-MD " of determining indication high density MD then is as the system identifier record of P-TOC.
When the code of indication high density MD exists, handle proceeding to step F 108 to determine that this dish is only to reproduce high density MD.
On the other hand, processing proceeds to step F 109 to determine that this dish is only to reproduce MD when the code of indication high density MD is not recorded.
When determining that in step F 101 dish of being packed into is the antiradar reflectivity dish, handle proceeding to step F 102 to determine whether the position on dish of just following the tracks of by optical head 20 is groove area.
Physical areas structure on dish has pit district, groove area and MIRROR SITE, shown in accompanying drawing 21A to 21C and accompanying drawing 22A to 22C.In these districts which zone of being in of optical head 20 can from and the amplitude level of signal (A+B+C+D) or RF signal determine.For example, the peak level/bottom level of the amplitude by detecting the RF signal can determine, determines amplitude level and relatively this amplitude level and predetermined threshold value level thus.
When the position on dish that definite optical head 20 is just being followed the tracks of in step F 102 is not groove area, handle proceeding in the step F 103, the control sliding track mechanism arrives groove area with flying optical head 20 in this step.Then, processing turns back to step F 102 to determine that the position on dish that optical head 20 is just being followed the tracks of is a groove area.
Because the result of the processing of step F 102 and step F 103 when optical head 20 is in the groove area, detects by the above-mentioned method excute phase in step F 105.
Draw in signal PI when leading detecting, handle proceeding to step F 110 to determine that this dish is a high density MD Type C with respect to the phase place of push-pull signal P/P.
When in step F 105, detecting phase delay, in step F 106, carry out P-TOC and detect.Specifically, reproduce the P-TOC zone to determine the indicating code " Hi-MD " of high density MD whether as the system identifier record.
When having the code of indication high density MD, handle proceeding to step F 111 to determine that the dish of being packed into is a high density MD type B.
On the other hand, when the code of indication high density MD is not recorded, handle proceeding to step F 107 then to determine the U-TOC content.Then, determine in the marker code of above-mentioned U-TOC, to indicate high-density format (Hi-MD) cognizance code existence or do not exist.When having the cognizance code of indication high-density format, handle proceeding to step F 112 to determine that the dish of being packed into is high density MD type A.
When in U-TOC, not having the cognizance code of indicating high-density format, handle proceeding to step F 113 to determine that the dish of being packed into is record and reproduction MD.
Carry out above-mentioned processing by the combination of using reflectivity, phase difference detection and management information to detect (P-TOC detects and the U-TOC detection), can determine only to reproduce MD, record and reproduction MD, high density MD type A, high density MD type B, only reproduce the type of high density MD or high density MD Type C.
(disc-type is determined method (2))
Disc-type determines that method (2) is the example that reflectivity detects, management information detects the combination of (P-TOC detects and U-TOC detects) and address structure detection.
On behalf of disc-type, accompanying drawing 28 determine the processing of method (2).
In the disc-type of accompanying drawing 28 is determined to handle, in step F 201, at first determine reflectivity by above-mentioned method.When determining that the dish of being packed into is the high reflectance dish, handle proceeding to step F 204 to reproduce the P-TOC data.Whether the code " Hi-MD " of determining indication high density MD then is as the system identifier record of P-TOC.
When the code of indication high density MD exists, handle proceeding to step F 208 to determine that this dish is only to reproduce high density MD.
On the other hand, processing proceeds to step F 209 to determine that this dish is only to reproduce MD when the code of indication high density MD is not recorded.
When determining that in step F 201 dish of being packed into is the antiradar reflectivity dish, handle proceeding to step F 202 to determine whether the position on dish of just following the tracks of by optical head 20 is groove area.
When the position on dish that definite optical head 20 is just being followed the tracks of in step F 202 is not groove area, handle proceeding in the step F 203, the control sliding track mechanism arrives groove area with flying optical head 20 in this step.Then, processing turns back to step F 202 to determine that the position on dish that optical head 20 is just being followed the tracks of is a groove area.
Because the result of the processing of step F 202 and step F 203 when optical head 20 is in the groove area, carries out the ADIP address format by the above-mentioned method in step F 205 and determines.
Specifically, in the ADIP address decoder is handled, determine whether to have obtained the ADIP address by the ECC decoding.When obtaining by ECC decoding, handle proceeding to step F 210 to determine that dish is a high density MD Type C in the ADIP address.
In step F 205, when not obtaining the ADIP address, in step F 206, carry out P-TOC and detect by the ECC decoding.Specifically, reproduce the P-TOC data to determine the indicating code " Hi-MD " of high density MD whether as the system identifier record.
When having the code of indication high density MD, handle proceeding to step F 211 to determine that the dish of being packed into is a high density MD type B.
On the other hand, when the code of indication high density MD is not recorded, handle proceeding to step F 207 then to determine the U-TOC content.Then, determine in the marker code of above-mentioned U-TOC, to indicate high-density format (Hi-MD) cognizance code existence or do not exist.When having the cognizance code of indication high-density format, handle proceeding to step F 212 to determine that the dish of being packed into is high density MD type A.
When in U-TOC, not having the cognizance code of indicating high-density format, handle proceeding to step F 213 to determine that the dish of being packed into is record and reproduction MD.
Above-mentioned processing is carried out in the combination that reflectivity detects by using, address structure detects and management information detects (P-TOC detects and the U-TOC detection), can determine only to reproduce MD, record and reproduction MD, high density MD type A, high density MD type B, only reproduce the type of high density MD or high density MD Type C.
(disc-type is determined method (3))
Disc-type determines that method (3) detects (P-TOC detects and U-TOC detects), detection by management information and determines disc-type as the BCA in specific zone and definite result of using the detection hole H1 of tray salver 91 to open or close.
On behalf of disc-type, accompanying drawing 29 determine the processing of method (3).
In the disc-type of accompanying drawing 29 was determined to handle, in step F 301 at first, slide mechanism was controlled as flying optical head 20 on the inner periphery side of dish.
Then, in step F 302, determine the existence of BCA or do not exist.Judging that based on the method for determining by the zone described in the description of the step F in accompanying drawing 27 102 whether inner periphery side is that MIRROR SITE can be determined the existence of BCA or do not exist.That is, when the inner periphery side of dish is MIRROR SITE, can determine that BCA exists.
When BCA exists, handle proceeding to step F 305 to reproduce the bar code pattern of BCA.When the code of indication " Hi-MD 3 " is detected, handle proceeding to step F 307 to determine that the dish of being packed into is a high density MD Type C.
When the code (when code is indicated " Hi-MD 1.5 ") that does not detect as the indication " Hi-MD 3 " of the bar code pattern of BCA, handle and proceed to step F 306 to determine whether to exist U-TOC.Specifically, reproduce U-TOC to determine whether U-TOC exists.
When U-TOC exists, handle proceeding to step F 308 to determine that the dish of being packed into is a high density MD type B.
When not having U-TOC, handle proceeding to step F 309 to determine that the dish of being packed into is only to reproduce high density MD.
When in step F 302, determining not have BCA, in step F 303, determine to detect the opening/closing state of hole H1.Specifically, determine connection/dissengaged positions in the switch SW 1 of the detection hole determining unit 34 shown in the accompanying drawing 3.
When detection hole H1 is in closed condition (switch SW 1 is connected), handle proceeding to step F 310 to determine that the dish of being packed into is only to reproduce MD.
When detection hole H1 is in open mode (switch SW 1 is cut off), handle proceeding to step F 304 to determine the content of U-TOC.That is, reproduce U-TOC with the existence of determining the identification code (Hi-MD) of indication high-density format in the flag code of U-TOC or do not exist.When having the identification code of indication high-density format, handle proceeding to step F 311 to determine that the dish of being packed into is high density MD type A.
When in U-TOC, not having the identification code of indicating high-density format, handle proceeding in the step F 312 to determine that the dish of being packed into is record and reproduces MD.
By use and management information detect (U-TOC detections), BCA detects and above-mentioned processing is carried out in the combination of the opening/closing status detection of detection hole H1, can determine only to reproduce MD, record and reproduction MD, high density MD type A, high density MD type B, only reproduce the type of high density MD or high density MD Type C.
(disc-type is determined method (4))
Disc-type determines that method (4) detects (P-TOC detects and U-TOC detects) and uses definite result of the detection hole H1 of tray salver 91 to determine disc-type by reflectivity detection, management information.
On behalf of disc-type, accompanying drawing 30 determine the processing of method (4).
In the disc-type of accompanying drawing 30 is determined to handle, in step F 401 at first, determine the opening/closing state of the detection hole H0 of tray salver 91.Specifically, determine to detect hole determining unit 34 switch SW 0 open closed condition.
When detecting hole H0 and be in closed condition (switch SW 0 is connected), handle proceed to step F 405 with determine that optical head 20 just following the tracks of whether be subjected to the position at dish be groove area.When determining that in step F 405 position is not groove area, handle proceeding in the step F 406, the control sliding track mechanism arrives groove area with flying optical head 20 in this step.Then, processing proceeds to step F 405 to determine whether this position is groove area.
Because the optical head as a result 20 of step F 406 and step F 406 when being in the groove area, reproduces U-TOC existing or not existing with the identification code of determining indication high-density format in the flag code of U-TOC in step F 410.When having the identification code of indication high-density format, handle proceeding to step F 411 to determine that the dish of being packed into is high density MD type A.
When in U-TOC, not having the identification code of indicating high-density format, handle proceeding in the step F 412 to determine that the dish of being packed into is record and reproduces MD.
When determining that in step F 401 detection hole H0 is in open mode (switch SW 0 is cut off), in step F 402, determine to detect the opening/closing state of hole H1.Specifically, determine the opening/closing state of the switch SW 1 of detection hole determining unit 34.
When detection hole H1 is in closed condition (switch SW 1 is connected), handle proceeding to step F 407 to carry out the reflectivity detection.When determining that the dish of being packed into is the high reflectance dish, handle proceeding to step F 414 to determine that this dish is only to reproduce MD.
When determining that in step F 407 dish of being packed into is the antiradar reflectivity dish, handle and proceed to step F 409, in this step, reproduce the P-TOC district to determine the indicating code " Hi-MD " of high density MD whether as the system identifier record.
When having the code of indication high density MD, handle proceeding to step F 415 to determine that this dish is a high density MD type B.
On the other hand, when P-TOC itself does not exist, handle proceeding to step F 416 to determine that the dish of being packed into is a high density MD Type C.
When determining that in step F 402 detection hole H1 is in open mode (switch SW 1 is cut off), processing proceeds to step F 403 and detects to carry out reflectivity.When determining that the dish of being packed into is the high reflectance dish, handle proceeding to step F 413 to determine that this dish is only to reproduce high density MD.
When this dish is the antiradar reflectivity dish, handle proceeding to step F 404 to reproduce the P-TOC district.Then, determine whether P-TOC exists, perhaps when P-TOC existed, whether the code " Hi-MD " of determining indication high density MD was as the system identifier record.
When not having P-TOC, handle proceeding to step F 421 to determine that the dish of being packed into is a high density MD Type C.
When the code of P-TOC existence and indication high density MD exists as system identifier, handle proceeding to step F 420 to determine that this dish is a high density MD type B.
On the other hand, exist and during the code of record indication high density MD at P-TOC, handle proceed to step F 422 with the position on dish determining optical head 20 and just following the tracks of whether in groove area., handle and proceed to step F 423 not in groove area the time in definite this position, in this step the control sliding track mechanism with flying optical head 20 to groove area.Then, processing turns back to step F 422 to determine whether this position is groove area.
Because the optical head as a result 20 of step F 422 and step F 423 when being in the groove area, reproduces U-TOC existing or not existing with the identification code of determining the highdensity form of indication in step F 417.When having the identification code of indication high-density format, handle proceeding to step F 419 to determine that the dish of being packed into is high density MD type A.
When in U-TOC, not having the identification code of indicating high-density format, handle proceeding in the step F 418 to determine that the dish of being packed into is record and reproduces MD.
Above-mentioned processing is carried out in the combination that reflectivity detects by using, management information detects the opening/closing status detection of (P-TOC detects and U-TOC detects) and detection hole H0 and H1, can determine only to reproduce MD, record and reproduction MD, high density MD type A, high density MD type B, only reproduce the type of high density MD or high density MD Type C.
(disc-type is determined method (5))
Disc-type determines that method (5) is that reflectivity detects, management information detects (U-TOC detection), as the example combinations of the detection of the BCA in specific zone.
On behalf of disc-type, accompanying drawing 31 determine the processing of method (5).
In the disc-type of accompanying drawing 31 is determined to handle, in step F 501, at first determine reflectivity.When the dish of determining to be packed into is the high reflectance dish, handle and proceed to step F 505, control sliding track mechanism flying optical head 20 is on the inner periphery side of dish in this step.Then, in step F 506, determine the existence of BCA or do not exist.
When having BCA, handle proceeding to step F 508 to determine that the dish of being packed into is only to reproduce high density MD.
When not having BCA, handle proceeding to step F 509 to determine that the dish of being packed into is only to reproduce MD.
When determining that in step F 501 dish packed into is the antiradar reflectivity dish, handle proceeding in the step F 502, control sliding track mechanism flying optical head 20 is on the inner periphery side of dish in this step.Then, in step F 503, determine the existence of BCA or do not exist.
When BCA exists, handle the information of step F 507 that proceeds to the bar code pattern of reproduction BCA.When detecting the code of indication " Hi-MD ", handle proceeding to step F 510 to determine that the dish of being packed into is a high density MD Type C.
When the code that does not detect as the indication " Hi-MD " of the bar code pattern of BCA (in code indication " Hi-MD1.5 " time), handle proceeding to step F 511 to determine that the dish of being packed into is a high density MD type B.
When determining that in step F 503 BCA does not exist, in step F 504, check U-TOC.That is, reproduce the U-TOC district to determine to exist or do not exist the identification code of indicating high-density format.When having the identification code of indication high-density format, handle proceeding to step F 512 to determine that the dish of being packed into is high density MD type A.
When in U-TOC, not having the identification code of indicating high-density format, handle proceeding to step F 513 to determine that the dish of being packed into is record and reproduction MD.
Above-mentioned processing is carried out in the combination that reflectivity detects by using, management information detects (U-TOC detections) and BCA detection, can determine only to reproduce MD, record and reproduction MD, high density MD type A, high density MD type B, only reproduce the type of high density MD or high density MD Type C.
(disc-type is determined method (6))
Disc-type determines that method (6) is to carry out the example that management information detects (P-TOC detects and U-TOC detects).
On behalf of disc-type, accompanying drawing 32 determine the processing of method (6).
In first step F601, determine the existence of U-TOC.
When U-TOC exists, handle to proceed to step F 602 existing or not existing with the identification code of determining indication high-density format in the flag code of U-TOC.
When in U-TOC, not having the identification code of indicating high-density format, handle proceeding in the step F 606 to determine that the dish of being packed into is record and reproduces MD.
When the identification code of high-density format is indicated in existence in U-TOC, handle proceeding to step F 605, reproduce the P-TOC district to determine the indicating code " Hi-MD " of high density MD whether as the system identifier record in this step.
When having the code of indication high density MD, handle proceeding to step F 611 to determine that this dish is a high density MD type B.
On the other hand, when in P-TOC, not having the code of indication high density MD, handle proceeding to step F 610 to determine that this dish is high density MD type A.
When in step F 601, determining not have U-TOC, in step F 603, determine the existence of P-TOC or do not exist.
When P-TOC does not exist, handle proceeding to step F 607 to determine that this is a high density MD Type C.
When P-TOC exists, handle proceeding to step F 604 to determine to indicate the system identifier record of the code " Hi-MD " of high density MD as P-TOC.
When having the code of indication high density MD, handle proceeding to step F 609 to determine that this dish is only to reproduce high density MD.
On the other hand, when in P-TOC, not having the code of indication high density MD, handle proceeding to step F 608 to determine that the dish of being packed into is only to reproduce MD.
By using the P-TOC that detects as management information to detect and above-mentioned processing is carried out in the combination of U-TOC detection, can determine only to reproduce MD, record and reproduction MD, high density MD type A, high density MD type B, only reproduce the type of high density MD or high density MD Type C.
Writing possibility determines to handle
The information of representing by detection hole H0 in the tray salver 91 that is formed on dish 90 and H1 is then described, in particular for the information of the processing of determining to write the state that possibility sets.
As indicated above, only reproduce MD, record and reproduction MD and high density MD type A and use to detect hole H0 and be used to write possibility and set, and high density MD type B, only reproduce high density MD and high density MD Type C and use and detect hole H1 and write possibility and set.
Therefore, when dish 90 was encased in the storage unit 2, definite result combinations of the opening/closing state of the result that disc-type is determined and detection hole H0 and H1 was to determine whether dish 90 can be write still and can not write.
Accompanying drawing 33A and 33B are depicted as the closed condition of opening as the detection hole H0 of pattern and H1.
Accompanying drawing 33A is depicted as in only reproducing MD, record and reproduction MD and high density MD type A the state as the hole of pattern.
In this case, detection hole H0 (connection/dissengaged positions of switch SW 0) is used for detection and writes possibility setting (write-protect), and detection hole H1 (connection/dissengaged positions of switch SW 1) is used for the detection of reflected rate.
Can be designed to the pattern of two switch SW 0 and SW1 in the pattern shown in the accompanying drawing 33A 0 to 3.
In pattern 0, detect hole H0 and H1 and all be in open mode, promptly switch SW 0 and SW1 cut off.
It is impossible that this indication is write in record and reproduction MD and high density MD type A.
In pattern 1, detection hole H0 is in open mode and detects hole H1 and is in closed condition, that is, switch SW 0 is cut off and switch SW 1 connection.
MD (it is impossible to write) is only reproduced in this indication.
In pattern 2, detect hole H0 and be in closed condition and detect hole H1 and be in open mode, promptly switch SW 0 is connected and switch SW 1 is cut off.
It is possible that this indication is write in record and reproduction MD and high density MD type A.
In mode 3, detect hole H0 and H1 and all be in closed condition, promptly switch SW 0 and SW1 connect.From above with reference to the accompanying drawings 4 and the description of accompanying drawing 6A and 6B be appreciated that this mode 3 is impossible.
Accompanying drawing 33B is depicted as according to present embodiment in high density MD type B, only reproduce under the situation of high density MD and high density MD Type C state as the hole of pattern.
In this case, detect hole H0 and in all, all be in open mode (switch SW 0 is all cut off) in all.Detection hole H1 (connection/dissengaged positions of switch SW 1) is used for detection and writes possibility setting (write-protect).
Also be in this case, be as described pattern 0 to 3 hereinafter at the mode initialization of identical with state among the accompanying drawing 33A two switch SW 0 and SW1.
Wherein detect pattern 0 middle finger that hole H0 and H1 be in open mode (being that switch SW 0 and SW1 cut off) be shown in write in high density MD type B and the high density MD Type C impossible.Point out in passing, only reproduce high density MD and always be in pattern 0 that it is impossible that expression is write.
Wherein detect hole H0 be in open mode and detect hole H1 be in closed condition (be switch SW 0 cut off and switch SW 1 connect) pattern 1 indication to write in high density MD type B and high density MD Type C be possible.
Wherein detect hole H0 be in closed condition and detect hole H1 be in open mode (be switch SW 0 connect and switch SW 1 cut off) pattern 2 and wherein detect hole H0 and mode 3 that detection hole H1 is in closed condition (being that switch SW 0 and SW1 connect) all is impossible.
From accompanying drawing 33A and 33B, be appreciated that corresponding to the pattern of the opening/closing state that detects hole H0 and H1 and have different meanings according to the type of dish.
Therefore, whether the 32 execution accompanying drawings 34 of the memory controller in disc driving equipment (storage unit 2) to the processing of accompanying drawing 35 can be write with definite dish 90 of being packed in this example.
The processing of accompanying drawing 34 is at first described.
In the processing of accompanying drawing 34, memory controller 32 detects the switch SW 0 of hole determining unit 34 and connection/dissengaged positions of SW1 in first step F701.Memory controller 32 learns that thus which kind of pattern in the pattern 0 to 3 shown in accompanying drawing 33A and the accompanying drawing 33B is current state.
When current state is pattern 0, handles from step F 702 and proceed to step F 705 with the definite processing of execution dish.Determine that as this dish the above-mentioned disc-type of processing execution determines a kind of processing in the method (1) to (6).
Under the situation of pattern 0, dish 90 is records and reproduces MD, high density MD type A/ type B/Type C or only reproduce high density MD.
When the result who determines as the disc-type in the step F 705 determined that dish 90 is high density MD Type C, processing proceeded to step F 719 from step F 706 and is high density MD Type C and is set in the state of can not writing to determine dish 90.
When the result that the disc-type in the rapid F705 of conduct is determined determined that dish 90 is high density MD type A, processing proceeded to step F 720 from step F 707 and is high density MD type A and is set in the state of can not writing to determine dish 90.
Determine that in the result who determines as the disc-type among the rapid F705 dish 90 is high density MD type B when (not comprising the situation of only reproducing high density MD), handle proceeding to step F 721 from step F 708 and are high density MD type B and are set in the state of to write to determine dish 90.
At the definite dish 90 of the result who determines as the disc-type among the rapid F705 is when only reproducing high density MD, handles from step F 709 and proceeds to step F 722 to determine that dish 90 only reproduces high density MD and also therefore determines and can not write.
Determine that in the result who determines as the disc-type among the rapid F705 dish 90 is records and when reproducing MD, handle proceeding to step F 723 from step F 710 and are records and reproduce MD and be set in the state of to write to determine dish 90.
When the result who determines as the disc-type among the rapid F705 determines that dish 90 is disc-types except the above-mentioned type, promptly determine dish 90 be impossible be in pattern 0 only reproduce MD the time, determine in step F 729, to have taken place intertwining mistake.
When the state of switch SW 0 and SW1 is pattern 1, handle to proceed to step F 711 from step F 703 and determine to handle (disc-type determine the method (1) to (6) a kind of) with the execution dish.
Under the situation of pattern 1, dish 90 is only to reproduce MD or high density MD type B/Type C.
Determining that as the dish of step F 711 the definite dish 90 of the result who handles is when only reproducing MD, handling from step F 712 and proceed to step F 724 to determine that dish 90 only reproduces MD and also therefore determines and can not write.
When determining that as the dish of step F 711 result who handles determines that dish 90 is high density MD Type C, processing proceeds to step F 725 from step F 714 and is high density MD Type C and is set in the state of can writing to determine dish 90.
Determining that as the dish of step F 711 result who handles determines that dish 90 is high density MD type B when (not comprising the situation of only reproducing high density MD), handling proceeding to step F 728 from step F 715 and are high density MD type B and are set in the state of to write to determine dish 90.
When determining that as the dish of step F 711 result who handles determines that dish 90 is disc-types except above-mentioned type, promptly determining that dish 90 is impossible be in the record of pattern 1 and when reproducing MD or high density MD type A or only reproducing high density MD, determine to have taken place intertwining mistake in step F 729.
When the state of switch SW 0 and SW1 is pattern 2, handle to proceed to step F 716 from step F 704 and determine to handle (disc-type determine the method (1) to (6) a kind of) to determine dish.
Under the situation of pattern 2, dish 90 is high density MD type A or record and reproduction MD.
When determining that as the result in step F 716 dish 90 is high density MD type A, processing proceeds to step F 727 from step F 717 and is high density MD type A and is set in the state of can writing to determine dish 90.
When the result of step F 716 determined that dish 90 is record and reproduction MD, processing proceeded to step F 726 from step F 718 and is record and reproduction MD and is set in the state of can writing to determine dish 90 in conduct.
When determining that as the dish of step F 716 result who handles determines that dish 90 is disc-types except above-mentioned type, promptly determining that dish 90 is in the time of impossible being in only the reproducing MD, high density MD type B/Type C and only reproduce high density MD of pattern 2, to determine to have taken place intertwining mistake in step F 729.
When the state of switch SW 0 and SW1 is the pattern 2 of impossible pattern, handles and proceed to step F 729 to determine to have taken place intertwining mistake from step F 704.
By this processing of accompanying drawing 34, memory controller 32 can determine correctly whether the dish 90 of being packed into can be write.
Write possibility like accompanying drawing 35 representation classes and determine another example of processing.
In this case, the memory controller 32 execution dishes in first step F801 determine to be handled, and promptly carry out above-mentioned disc-type and determine a kind of to determine the type of dish in the method (1) to (6).
At dish 90 is when only reproducing MD, and handling and proceeding to step F 807 from step F 802 is the dishes that only reproduce the impression pit with definite dish 90, and so determines and can not write.
Determine that in step F 801 dish 90 is when only reproducing high density MD, handle from step F 803 and proceed to step F 807 to determine it also is that to coil 90 in this case be only to reproduce the pit dish of impression and therefore determine and can not write.
When determining that in step F 801 dish 90 is high density MD Type C, handle and proceed to step F 808 from step F 804, memory controller 32 detects the switch SW 0 of hole determining unit 34 and connection/dissengaged positions of SW1 in step F 808.Be that memory controller 32 determines current states are in the pattern shown in accompanying drawing 33A and the 33B 0 which kind of pattern to the mode 3.
When determining that in step F 808 current state is pattern 0, processing proceeds to step F 812 and is high density MD Type C and is set at the state of can not writing to determine dish 90.
When determining that in step F 808 current state is pattern 1, processing proceeds to step F 813 and is high density MD Type C and is set at the state of can writing to determine dish 90.
When determining that in step F 808 current state is pattern 2 or mode 3, therefore at this moment impossible state is handled and is proceeded to step F 814 to determine to have taken place intertwining mistake.
Determine that in step F 801 dish 90 is that high density MD type B is not when (comprising the situation of only reproducing high density MD), the processing of memory controller 32 proceeds to step F 809 from step F 805, memory controller 32 is determined to detect the switch SW 0 of hole determining unit 34 and connection/dissengaged positions of SW1 in step F 809, and promptly current state is which kind of pattern in the pattern 0 to 3.
When determining that in step F 809 current state is pattern 0, processing proceeds to step F 815 and is high density MD type B and is set at the state of can not writing to determine dish 90.
When determining that in step F 809 current state is pattern 1, processing proceeds to step F 816 and is high density MD type B and is set at the state of can writing to determine dish 90.
When determining that in step F 809 current state is pattern 2 or mode 3, therefore at this moment impossible state is handled and is proceeded to step F 817 to determine to have taken place intertwining mistake.
When determining that in step F 801 dish 90 is high density MD type A, the processing of memory controller 32 proceeds to step F 810 from step F 806, memory controller 32 is determined to detect the switch SW 0 of hole determining unit 34 and connection/dissengaged positions of SW1 in step F 810, and promptly current state is which kind of pattern in the pattern 0 to 3.
When determining that in step F 810 current state is pattern 0, processing proceeds to step F 818 and is high density MD type A and is set at the state of can not writing to determine dish 90.
When determining that in step F 810 current state is pattern 2, processing proceeds to step F 819 and is high density MD type A and is set at the state of can writing to determine dish 90.
When determining that in step F 810 current state is pattern 1 or mode 3, therefore at this moment impossible state is handled and is proceeded to step F 820 to determine to have taken place intertwining mistake.
When determining that in step F 801 dish 90 is record and reproduction MD, the processing of memory controller 32 proceeds to step F 811, memory controller 32 is determined to detect the switch SW 0 of hole determining unit 34 and connection/dissengaged positions of SW1 in step F 811, and promptly current state is which kind of pattern in the pattern 0 to 3.
When determining that in step F 811 current state is pattern 0, processing proceeds to step F 821 and is records and reproduces MD and be set at the state of can not writing to determine dish 90.
When determining that in step F 811 current state is pattern 2, processing proceeds to step F 822 and is records and reproduces MD and be set at the state of can writing to determine dish 90.
When determining that in step F 811 current state is pattern 1 or mode 3, therefore at this moment impossible state is handled and is proceeded to step F 823 to determine to have taken place intertwining mistake.
Also be this processing by accompanying drawing 35, memory controller 32 can correctly be determined coiling 90 write and whether may.
Point out in passing, in above-mentioned example, determine to detect the pattern 0 of hole H0 and H1 to mode 3 (switch SW 0 and SW1).
Yet, can determine that by above-mentioned reflectivity detection this dish is only to reproduce pit dish (only reproduce MD or only reproduce high density MD) or the magnetooptic recording that can write down and reproduce and reproduction dish except only reproducing the pit dish.In addition, only reproduce that the pit dish always can not write.
In addition, mode 3 all is impossible under the situation of any kind that coils.
Then, when deterministic model is pattern 0 or pattern 1 or pattern 2, whether can determine to write may.
Specifically, therein in the pattern 0 that switch SW 0 and SW1 both cut off, at record with reproduce can the determining in any case of MD and high density MD type A/ type B/Type C " it is impossible writing ".Therein in the pattern 1 or pattern 2 of a switch connection among switch SW 0 and the SW1, at record with reproduce can the determining in any case of MD and high density MD type A/ type B/Type C " it is possible writing ".
This means when determining that by the reflectivity detection from reflected light information as indicated above this dish is the pit dish, can use OR type structure to come detector switch SW0 and SW1.
The use of OR type that is used for the detection of switch SW 0 and SW1 can be simplified the structure of switch SW 0 and SW1.
Though above described embodiment, the present invention is not limited to aforesaid embodiment, its various improvement also can design.
The program of carrying out by control module (corresponding to the memory controller 32 or the system controller 8 of record and reproducer (disc driving equipment)) realizes above-mentioned various processing (disc-type is determined in the place and write possibility and determine to handle).Therefore program can be stored among the ROM 9 of the record of accompanying drawing 1 and reproducer 1 or in the non-volatile RAM 12 or among the ROM that does not illustrate, they can for example be handled by memory controller 32 in advance.
Interchangeablely be, program can be temporarily or storage (record) for good and all removable recording medium such as floppy disk, CD-ROM (read-only optical disc), MO (magneto-optic) dish, DVD (digital universal disc), disk, semiconductor memory etc. in.This movable recording medium can be used as so-called software package and provides and can be used for design/manufacturing of disc driving equipment etc.
In addition, in the present embodiment, for example program can be recorded the dish 90 on and provide program as software package.Therefore record and reproducer 1 can coil 90 by reproduction and also this procedure stores come installation procedure in non-volatile ram 12 etc. with the fetch program.
Point out that in passing this program not only can be installed from movably recording medium as indicated above, but also can be by network such as LAN (LAN (Local Area Network)), the Internet etc. from having stored the downloads such as server of this program.
In addition, though in the dish compatibility of this hypothetical record and reproducer and mini disk (MD) system, the present invention is not limited to these, also can be applicable in the tray salver of another kind recording medium and with the disc driving equipment of this recording medium compatibility.
From description above, be understandable that, detecting the plane that has formed when the hole is in closed condition with in the reference planes basic horizontal of the locational tray salver that detects the hole according to the opening and closing device in the recording medium of the present invention.Therefore, when detecting the hole and be in closed condition, detect the hole and be in the state identical with the tray salver plane of the recording medium of the routine of the type that on identical position, does not detect the hole.Therefore, Dui Ying detector switch has the identical stroke range of recording medium corresponding to the type that does not detect the hole on this position.Therefore, do not need to change structure, for example corresponding to the stroke range of the switch that detects the hole to support various types of recording mediums.Therefore, recording medium of the present invention has prevented to hinder its size and reducing etc. of thickness because of the increase of the cost of disc driving equipment.
The present invention further can reduce because the possibility to the damage of switch etc. that the change of load on switch causes when packing various types of recording medium into.
In addition, in tray salver, form first at least and detect the hole and the second detection hole, detect the hole by the opening and closing device opening and closing second detection hole H1 and first and in all, all be in open mode.This means that second detects the hole and be used for for example writing down possibility and set, and be in closed condition in the plane that is in the reference planes basic horizontal of tray salver the time.In addition, first detect the hole and in all, be in open mode and for example represent to use first to detect the hole and be exclusively used in and forbid the state write in the recording medium of writing the general type that possibility sets.That is, can determine to write to forbid as the disc driving equipment of the model of routine.
Determine that according to disc driving equipment of the present invention or dish method is definite with disc-type, determine the information content (for example writing possibility).Based on be formed on one or more detections hole in the tray salver, based on the connection/dissengaged positions state that detects the hole with use based on result and determine from the catoptrical signal panels type of the recording medium of being packed into.
Therefore, can correctly determine to detect the set condition that the hole is detected in hole and second corresponding to first of this disc-type.Therefore, be not required to be the detection hole of writing the possibility setting and the corresponding switch that increases the new building that is used for various types of disc.
In addition, the detection of the detection by execution dish reflectivity, the phase differential of signal, the detection of the management information on the recording medium, on recording medium address structure detection and from determining based on disc-type being carried out in the combination of some detection in the detection of the specific region on recording medium from the catoptrical signal of this dish, can realize correct definite processing to various types of dishes.
Therefore, consider and comprising from the model of routine to corresponding to according to the various disc driving equipments of the scope of the model of disc driving equipment of the present invention with comprise that according to the various recording mediums the kind of recording medium of the present invention, the inventive example is as providing following effect:
Detect hole and second meaning that detects the hole and can realize that in the various combinations of recording medium and disc driving equipment the suitable possibility of writing sets by changing first according to the type of dish,
Can correctly carry out disc-type based on the detection hole and determine, can correctly determine to write possibility thus,
By the first detection hole (H0) that is used for conventional model recording medium according to the present invention is set in can not write state and can make recording medium according to the present invention be set in the state that can write/can not write by being used for detecting hole (H1) according to second of disc driving equipment of the present invention
Prevent operating mistake, data corruption and other problem, because be set to and can not write as the dish according to recording medium of the present invention for the model of routine,
At the convenience that design is provided aspect cost and the equipment size and immaculate, because on the disc driving equipment side, do not need to increase or change tray salver and detect hole and sense switch, and the switch over travel condition of dish according to the present invention and the dish of routine can be identical, and
It is right correctly to determine according to the state that detects the hole according to disc driving equipment of the present invention The dish of general type write possibility.
Claims (11)
1. the recordable disc that will have different recording capacities is received into the recording medium in the tray salver of normalized regulation outer shape respectively, it is characterized in that:
At least comprise that on the first surface of described tray salver first detects the hole and the second detection hole;
On the second surface vertical, comprise the slide mechanism that can be set by the user with the described first surface of described tray salver;
Accommodate described first the detecting the hole and open, close of tray salver of the dish of first recording capacity by the closing organ of opening that is opened, closes according to setting to described slide mechanism, when the described first detection hole is in open mode, the dish write data to described first recording capacity is forbidden in indication, when the described first detection hole was in closed condition, indication allowed the dish write data to described first recording capacity;
Accommodate described first recording capacity dish tray salver described second detect the reflectivity that the hole is used to indicate the dish of described first recording capacity;
Accommodate described first the detecting the hole and all be in the state of opening on if having time of tray salver of the dish of recording capacity second recording capacity bigger than the dish of described first recording capacity in institute;
Accommodate described second the detecting the hole and be opened, close of tray salver of the dish of second recording capacity, be used to indicate whether and write to the dish of described second recording capacity by described slide mechanism;
Accommodate the slide mechanism of tray salver of the dish of second recording capacity, detecting material thickness under the lower surface that first of the more approaching described second surface in hole detects the hole less than described second material thickness that detects under the lower surface in hole than described second.
2. a record and reproduce record and reproducer as the recording medium of one type dish in polytype dish, said dish is contained in the tray salver of predetermined form, and said record and reproducer comprise:
At least two of being arranged on the precalculated position of said tray salver of detection detect the open mode in holes and at least one hole pick-up unit of closed condition;
Be enclosed in the said recording medium in said record and the reproducer and determine device with optical signal radiation based on the type of the type of determining to be enclosed in the dish that holds in the tray salver of said record and reproducer from the reflected light of said dish; With
Based on the definite result who determines device by said type, explain the poroid attitude interpreting means of the poroid attitude in the detection hole on the precalculated position that is arranged on said tray salver.
3. record as claimed in claim 2 and reproducer,
Wherein at least one said determined hole type indication forbids writing said dish.
4. record as claimed in claim 2 and reproducer,
Wherein the first detection hole is defined on first precalculated position of said tray salver, and the second detection hole is defined on second precalculated position of said tray salver;
Said second open mode that detects the hole of recording medium of holding the dish of the first kind represents to forbid writing the state of dish;
Hold said first open mode that detects the hole of recording medium of the dish of second type and represent to forbid writing the state of dish, and said second the detecting the position and the existence in hole or do not have the reflectivity of display disc of recording medium of holding the dish of second type; And
Based on the definite result who determines device by said type, determine which kind of open mode in the said detection hole of writing of coiling is forbidden in indication.
5. record as claimed in claim 2 and reproducer,
The signal that detects based on the light from the reflection of said dish wherein, said type determine that at least a detection in the detection of specific region of the detection of address structure of detection, recording medium of the management information of the detection of device by the phase differential of the detection of the reflectivity that coils, said signal, recording medium and recording medium determines the type of dish.
6. record as claimed in claim 5 and reproducer,
Wherein said type determines that device determines the type of dish based on the testing result of the detection of the detection of the detection of the detection of said reflectivity, said phase differential, said management information and said address structure.
7. record as claimed in claim 5 and reproducer,
Wherein said type determines that device determines the type of dish based on the testing result of the detection of the detection of the detection of said reflectivity, said management information and said address structure.
8. record as claimed in claim 5 and reproducer,
Wherein said type determines that device determines the type of dish based on the testing result of the testing result of the detection of the detection of said management information and said specific region and said hole pick-up unit.
9. a record and reproduce record and reproducting method as the recording medium of one type dish in the dish of a plurality of types, said dish is contained in the tray salver of predetermined form, and said record and reproducting method comprise:
Detection is arranged on that on the precalculated position of said tray salver at least two detect the open mode in holes and step is detected in the hole of closed condition;
With optical signal radiation be enclosed in said record and the reproducer said recording medium and based on the type determining step of the type of determining to be enclosed in the dish that holds in the said tray salver of said record and reproducer from the reflected light of said dish; With
Based on definite result of said disc-type, explain the poroid attitude interpretation procedure of the poroid attitude in the detection hole on the precalculated position that is arranged on said tray salver.
10. record as claimed in claim 9 and reproducting method,
Wherein said determined hole type indicates whether to write said dish.
11. record as claimed in claim 10 and reproducting method,
Wherein be defined in first on first precalculated position of said tray salver and detect the setting in hole, and be defined in the setting that the hole is detected in second on second precalculated position of said tray salver;
Said first open mode that detects the hole of the dish of the first kind represents to forbid writing dish;
Said second open mode that detects the hole of the dish of second type is represented to forbid writing dish, and said first the detecting the position and the existence in hole or do not have the reflectivity of indicating said dish of the dish of second type.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP024567/2003 | 2003-01-31 | ||
| JP2003024567 | 2003-01-31 | ||
| JP019432/2004 | 2004-01-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1698128A CN1698128A (en) | 2005-11-16 |
| CN100342447C true CN100342447C (en) | 2007-10-10 |
Family
ID=35350192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004800000858A Expired - Fee Related CN100342447C (en) | 2003-01-31 | 2004-01-30 | Recording medium, recording/re production device, and recording/reproduction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100342447C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109199A (en) * | 1993-03-09 | 1995-09-27 | 索尼公司 | Recording apparatus having a function to prevent recording of a signal into a specific area of a recording medium |
| JPH103074A (en) * | 1996-06-14 | 1998-01-06 | Kokusai Electric Co Ltd | Liquid crystal display holding structure |
| JPH10302438A (en) * | 1997-04-30 | 1998-11-13 | Sony Corp | Method for preventing erroneous erase of optical disk, optical disk device and optical disk housing body |
-
2004
- 2004-01-30 CN CNB2004800000858A patent/CN100342447C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109199A (en) * | 1993-03-09 | 1995-09-27 | 索尼公司 | Recording apparatus having a function to prevent recording of a signal into a specific area of a recording medium |
| JPH103074A (en) * | 1996-06-14 | 1998-01-06 | Kokusai Electric Co Ltd | Liquid crystal display holding structure |
| JPH10302438A (en) * | 1997-04-30 | 1998-11-13 | Sony Corp | Method for preventing erroneous erase of optical disk, optical disk device and optical disk housing body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1698128A (en) | 2005-11-16 |
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