CN1188311A - Method of pre-formatting optical disc and apparatus thereof - Google Patents
Method of pre-formatting optical disc and apparatus thereof Download PDFInfo
- Publication number
- CN1188311A CN1188311A CN97121725A CN97121725A CN1188311A CN 1188311 A CN1188311 A CN 1188311A CN 97121725 A CN97121725 A CN 97121725A CN 97121725 A CN97121725 A CN 97121725A CN 1188311 A CN1188311 A CN 1188311A
- Authority
- CN
- China
- Prior art keywords
- support information
- carrier signal
- signal
- formatting
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Optical Recording Or Reproduction (AREA)
Abstract
A disc pre-formatting device pre-formats supporting information on a disc. In the device, the disc is pre-formatted by being loaded at least a bit of supporting information; the supporting information is used to regulate the unit recording capacity of the data in a cycle of the carrier signal. The phase of the carrier signal changes as the logistic values of the supporting information. The pre-formatted supporting information re-divides the disc trace into smaller unit recording areas.
Description
But the present invention relates to a kind of optical access CD, more particularly, relate to a kind of method and device thereof that is used for pre-formatting one support information on CD (as positional information etc.).The invention still further relates to a kind of on by the CD of supporting signal pre-formatting the recording method and device of recorded information.
Usually, for exactly recorded information on the CD and from the CD sense information, record/readout device must be discerned the position that will visit exactly.For this reason, must write down an address information etc. in advance, hereinafter referred to as support information, it points out to be recorded in the particular location on the CD in advance.Usually, such support information provides an identifying information for pen recorder, as the address in every unit record zone etc., makes user profile divide with a determining unit, and uses recording device records.Therefore, support information comprises: a synchronous signal is used for posting field is divided into the unit record district of a desirable amount; One exclusive address information is used to point out the position in each unit record zone, error correcting code and the like.Address information is typically along a track continuous distribution on the CD, and each address information is indicated a physical location.
A kind of so-called " fluctuation dish " is considered to the dish by this support information pre-formatting.On this fluctuation dish, track is formed by groove, hereinafter referred to as " slot type track " or formed by rank, hereinafter referred to as " stepwise track ", their continuously or intermittentlies are supported the information pre-formatting in the fluctuation zone of track from its periphery fluctuation of mediad, hereinafter are called " fluctuation part ".Adopt an advantage of this structure to be that the support information of fluctuation dish do not waste the track of recording user information.
The example strategy of supporting information at fluctuation part pre-formatting comprises a kind of method, and this method is loaded into support information on one carrier signal, and track is fluctuateed according to carrier signal.This fluctuation pre-formatting scheme has adopted a kind of frequency modulation (PFM) system that changes the carrier information cycle,, changes frequency according to support information, so that supporting signal is carried on the carrier signal that is.Therefore, must be according to a cell data that is included in the support information, for example a Bit data distributes the carrier signal with several to dozens of cycles.As a result, in traditional pre-formatting method, very difficult track with CD is divided into the unit record zone in the certain-length.
In fact, a CD that uses fluctuation pre-formatting method pre-formatting to support information comprises rewritable CD (CD-R), as shown in Figure 1.With reference to figure 1, have on the CD-R by the defined fluctuation part 14 in each border of stepwise track 10 and slot type track 12.The phase place of fluctuation part 14 is identical with slot type track 12, and fluctuates according to the carrier signal with some cycles scope, thereby it is by a supporting signal on the pre-formatting, and this supporting signal comprises a synchronous signal, address and error correcting code etc.In other words, this supporting signal is loaded on the carrier signal with some cycles scope.Therefore, this carrier signal with some cycles scope is divided into the unit record zone of first-class size with slot type track 12, and points out a physical location for each the unit record district in the slot type track 12.
A kind of information pre-formatting device of supporting as shown in Figure 2 is used for limiting the fluctuation part according to the carrier signal with some cycles scope.With reference to figure 2, support information pre-formatting device and comprise: first frequency divider 22 is used for from the oscillator signal of oscillator 20 reception 44.1khz; With channel encoder 24, be used for receiving one and support information signal PFS with an incoming line 21.The frequency of the 44.1khz oscillator signal of first frequency divider 22 self-oscillation in the future devices 20 is divided by seven, and to its wave shaping, thereby, produce the quarter-phase clock PCLK of 6.3khz, as shown in Figure 3.As shown in Figure 3, support information signal PFS and be made up of a synchronous signal SYNC and an identification code part PID, synchronizing signal SYNC is used for the track of CD is divided into unit record zone, i.e. frame; Identification code part PLD is used to indicate the physical location of each frame of being divided by synchronizing signal SYNC.Identification code part PID comprises: one supports the address (not shown), is used to physical location of each frame indication of dividing on the track of CD; With an error correcting code (not shown), be used for correcting the mistake that is included in the support address.Channel encoder 24 carries out chnnel coding for the support information signal PFS from incoming line 21, produces a channel bit-stream PCHB.Then, channel encoder 24 produces a pair of phase modulated signal DPS, as shown in Figure 3 by the quarter-phase modulation that the quarter-phase clock PCLK from the 6.3khz of first frequency divider 16 carries out channel bit-stream PCHB.
Support information pre-formatting device also comprises: a second frequency divider 26 is used for the oscillator signal that reception oscillator 20 produces; With a frequency modulator 28, be used to receive quarter-phase modulation signal DPS.The frequency of the oscillator signal of the 44.1khz that second frequency divider 26 produces oscillator 20 produces the carrier signal CIS of 22.05khz divided by 2.Frequency modulator 28 changes the frequency of carrier signal CIS according to the logical value of quarter-phase modulation signal DPS, thereby, modulated carrier signal PC shown in Figure 3 is put on the output line.Modulated carrier signal PC distributes at a constant frequency band range, and this frequency band is center, i.e. 22.05khz with carrier signal CIS frequency.According to the fluctuate interface of stepwise and slot type track 10 and 12 of modulated carrier signal PC.As can be seen from Figure 3, the modulated carrier signal PC of pre-formatting in the interface of stepwise and slot type track 10 and 12 wasted its seven cycles by this way, promptly, be pre-formatting dibit channel bit-stream PCHB, every bit channel bit stream PCHB need waste 3.5 cycles, and pre-formatting one bit is supported information signal PFS also will waste its tens cycles.
As mentioned above, for by adopting warbled support information pre-formatting method pre-formatting one bit in the CD track to support information, need the cycle of several to dozens of carrier signals.For pre-formatting one bit is supported information, wasted sizable length according to the track of carrier signal fluctuation.Therefore, in the support information pre-formatting method of frequency of utilization modulation, be difficult to the track of CD is divided into the unit record zone of length less than certain size.In other words, according to the support information pre-formatting method of frequency of utilization modulation, can not divide the posting field of CD thick and fast.
Therefore, an object of the present invention is to provide the method and apparatus of a CD pre-formatting, it can be on CD pre-formatting support information, make its posting field can be divided into unit record zone less than certain-length.
Another object of the present invention provides one and supports information reproduction method and device, and its pre-formatting support information in CD of can regenerating makes its posting field can be divided into the unit record zone less than certain-length.
Another object of the present invention provides a kind of compact disk recording method and device, and it can enough unit record user profile less than certain-length.
For realizing these and other objects, according to an aspect of the present invention, provide a kind of CD pre-formatting method, wherein, support information pre-formatting optical disc to the one-period of carrier signal by loading at least one bit, this support information is used to be defined in the unit record volume of data.
According to a further aspect in the invention, provide a CD pre-formatting device, wherein, support information pre-formatting optical disc on the one-period carrier signal by loading at least one bit, this support information is used for the unit record volume of specified data.
According to a further aspect in the invention, provide a CD pre-formatting device, wherein, on a carrier signal, come pre-formatting optical disc by loading supporting signal.Supporting signal has a synchronous signal, is used for the track of CD is divided into a unit record zone and a support address, is used to indicate the physical location in each unit record zone of being divided by synchronizing signal.This device comprises element that produces carrier signal and the phase modulation component that changes carrier signal phase according to the logical value of the information of support.
According to a further aspect in the invention, provide one to support information reproduction method, may further comprise the steps: read a carrier signal from CD, this CD is by the support information pre-formatting of specified data unit record volume; Support information is loaded on the carrier signal; By the carrier signal of reading carry out phase demodulating system, information is supported in reconstruct.
According to a further aspect in the invention, provide one to support information regenerator, this device comprises: from reading the element of carrier signal by the CD of the support information pre-formatting of the unit record volume of specified data, support information is loaded on the carrier signal; And phasing device, being used for by the carrier signal of reading from reading device carry out phase demodulating system, information is supported in reconstruct.
According to a further aspect in the invention, a kind of compact disk recording method is provided, may further comprise the steps: detect a carrier signal from CD, this CD is by the information of support pre-formatting, this support information comprises: a synchronous signal, be used for track with CD and be divided into unit record zone and one and support the address, be used to point out the physical location in each unit record district of dividing by synchronizing signal; Support information is loaded on the carrier signal; By carrier signal carry out phase demodulating system, the address is supported in reconstruct; Use and support address user data on CD.
According to a further aspect in the invention, a kind of optical disc recording apparatus is provided, this device comprises: support the information detecting element, be used for detected carrier signal from the CD, this CD is by the information of support pre-formatting, this support information comprises: a synchronous information is used for the track of CD is divided into the unit record zone; With a support address, be used to indicate the physical location in each unit record zone of dividing by synchronizing signal, support information is loaded on the carrier signal; By the device of address is supported in reconstruct to carrying out phase demodulating by the carrier signal of supporting the information detector detection; And by using device by support address user data on CD of reconfiguration device reconstruct.
Connection with figures, by following description, above and other objects of the present invention and characteristics will be more obvious, wherein:
Fig. 1 is the sketch of a CD-R, and the supporting signal on it is by the fluctuation pre-formatting method pre-formatting of frequency of utilization modulation;
Fig. 2 is a calcspar, has shown the structure of the CD pre-formatting device of frequency of utilization modulation;
Fig. 3 is the operation waveform diagram of the every part of support information pre-formatting device in shown in Figure 2;
Fig. 4 is a calcspar, has shown the structure of the CD pre-formatting device of one embodiment of the invention;
Fig. 5 is the operation waveform diagram that is shown in every part of support information pre-formatting device shown in Figure 4;
Fig. 6 is a calcspar, has shown the structure of the optical disc recording apparatus of one embodiment of the invention;
Fig. 7 is the detailed block diagram that is shown in support information decoding device shown in Figure 6;
Fig. 8 is the operation waveform diagram that is shown in every part of the support information decoding device in shown in Figure 7;
Fig. 9 is the detailed block diagram that is shown in the quarter-phase clock regeneration program in shown in Figure 7;
Figure 10 is the operation waveform diagram of every part of quarter-phase clock regeneration program shown in Figure 9.
With reference to figure 4, shown a CD pre-formatting device, thereby the border of this device by making on the CD adjacent mutually stepwise track and slot type track is with some cycles fluctuation pre-formatting one support information on CD.As shown in Figure 4, this CD pre-formatting device comprises: and first frequency divider 32 and a channel encoder 34 of oscillator 30 serial connections.Oscillator 30 has produced a constant frequency (example, sinusoidal oscillator signal 44.1khz).The frequency of the oscillator signal that first frequency divider 32 produces oscillator 30 is divided by the first preset frequency partition coefficient, for example, and n
1=1,2,3,4 or 5, simultaneously to wave shaping, thereby, produced quarter-phase clock PCLK shown in Figure 5.Channel encoder 34 input is from the quarter-phase clock of first frequency divider 32 with from the support information signal PFS of incoming line 31.As shown in Figure 5, support information signal PFS and be made up of a synchronous signal SYNC and an identification code part PID, synchronizing signal SYNC is used for the track of CD is divided into the unit record zone, hereinafter is called frame; Identification code part PID is used to indicate the physical location of each frame of being divided by synchronizing signal SYNC.Identification code part PID comprises: one supports the address (not shown), is used to each frame of dividing on the track of CD to point out a physical location; With an error correcting code (not shown), be used for correcting the mistake that is included in the support address.Channel encoder 24 carries out chnnel coding for the support information signal PFS from incoming line 31, produces a channel bit-stream PCHB, is shown in Fig. 5.Then, channel encoder 34 carries out the quarter-phase modulation by using the quarter-phase clock PCLK from first frequency divider 32 to channel bit-stream PCHB, produces a pair of phase modulated signal DPS, is shown in Fig. 5.When the logical value of channel bit-stream PCHB was " 1 ", this quarter-phase signals DP S had high logic, and when the logical value of channel bit-stream PCHB was " 0 ", it had low logic.
Support information pre-formatting device also comprises: a second frequency divider 36 is used for the oscillator signal that reception oscillator 30 produces; With a frequency modulator 38, be used to receive quarter-phase modulation signal DPS from channel encoder 34.The frequency of the oscillator signal that second frequency divider 36 produces oscillator 30 is divided by second preset frequency partition coefficient, for example n
2=1,2,3,4 or 5, produce a carrier signal CIS, as shown in Figure 5.The frequency of the carrier signal CIS that produces at second frequency divider 36 places is equal to or greater than at first frequency divider 3
2The frequency of the quarter-phase clock PCLK that the place produces.In other words, the frequency assignation rate n in the second frequency divider 36
2Be arranged to be equal to or greater than the frequency assignation rate n in the first frequency divider 32
1Phase-modulator 38 produces once modulated carrier signal PC by using the phase modulation (PM) of carrier signal CIS to quarter-phase signals DP S.This carrier signal PC as shown in Figure 5, has the frequency that equates with carrier signal CIS, simultaneously, and according to 180 ° of its phase lags of logic state of quarter-phase signals DP S.Therefore, the Bit data of channel bit-stream PCHB is loaded on the one-period of carrier signal PC.The modulated carrier signal PC that produces at phase-modulator 38 places affacts (not shown) on the formatter by an output line 33.Then, formatter is according to the shape of modulated carrier signal Pc according to fluctuation part, and two borders by stepwise adjacent mutually on the CD and slot type track or one of them border are fluctuateed and supported signal on the form.This fluctuation part has been wasted the track zone corresponding to modulated carrier signal PC one-period,, for a Bit data of representing channel bit-stream PCHB, waste the one-period of carrier signal CIS that is.Compare with traditional modulated support information, the size of the frame that the support information of carrying out phase modulation (PM) by this way is divided into all or arbitrary stepwise and the slot type track of CD is original 1/3.5.
With reference now to Fig. 6,, shown an embodiment of optical disc recording apparatus of the present invention, it is recording user information on a CD, and this CD has the part according to the carrier signal fluctuation of phase modulation (PM).As shown in Figure 6, optical disc recording apparatus comprises: a CD 40 that is rotated by spindle motor 42; One is connected to the servo control mechanism 46 of a light picker 44; With a motor driver 48 that is connected to main shaft 42.Light picker 44 supports light beam SB1 and SB2 to shine on the stepwise track 12 of CD 40 a single main beam MB and two, thereby write down an information, and by supporting light beam SB1 and SB2 to read the carrier signal PC of pre-formatting on the interface of adjoining of stepwise and slot type track 10 and 12 by main beam MB.For this reason, light picker 44 comprises a beam splitter BS and an object lens OL, and beam splitter BS places laser diode LD and one to be used between the photodetector PD of scattering laser bundle; Object lens OL places between CD 40 and the beam splitter BS, and the laser beam that beam splitter BS is sent converges at CD 40.Beam splitter BS allows to shine by object lens OL on the surface of CD 40 from the laser beam of laser diode LD, simultaneously, allows to invest photodetector PD by the folded light beam of CD 40 reflections by detecting lens SL.Detect optical convergence that lens SL will send with beam splitter BS to photodetector PD, control a focus by the astigmatism technology.The light beam that produces at the laser diode LD place is separated into three light beam MB, SB1 and SB2 by diffraction grating GT.By the light beam MB that diffraction grating GT separates, SB1 and SB2 arrive CD 40 by beam splitter BS and object lens OL, then converge on the slot type track 12 of CD 40 by object lens OL, become a circular light spot, as shown in Figure 1.By the slot type track 12 beam reflected MB of CD 40, SB1 and SB2 pass object lens OL and beam splitter BS, converge on the surface of photodetector PD by detecting lens SL at last.Photodetector PD will support light beam SB1 and SB2 to convert electric signal to, produce first and second radiofrequency signal RFt1 and the RFt2.Servo control mechanism 40 is used to the actuator ACT in the first and second radiofrequency signal RFt1 of photodetector PD and RFt2 driving optical pickup apparatus 44, thus control bundle MB, the size of SB1 and SB2 and the position on track etc.On the other hand, motor driver 48 is according to the rotating speed of the signal controlling spindle motor 42 of servo control mechanism 56.
In addition, optical disc recording apparatus comprises a carrier signal detecting device 50 and a supporting signal demoder 52, and they are concatenated on the photodetector PD in the light picker 44.First and second radiofrequency signal RFt1 and the RFt2 that carrier signal detecting device 50 is handled from photodetector PD, thereby, detect the carrier signal PC of pre-formatting on the slot type track 12 of CD 40.Detected carrier signal PC is the signal of a phase modulation (PM) at carrier signal detecting device 50 places, it is loaded with a synchronous signal SYNC and supports identification code PID, supporting signal demoder 52 reconstruct one synchronous signal SYNC and support address signal PAdd, the boundary member of this synchronizing signal SYNC indication interframe supports address signal PAdd to be used to indicate from the carrier signal PC of carrier wave signal detector 50 position of frame in the slot type track 12.For this reason, supporting signal demoder 52 can adopt structure as shown in Figure 7, and this will make an explanation below.
In addition, optical disc recording apparatus comprises: a reference signal generator 54 is used to produce a reference sync signal SYref and a reference clock SCLK; With an optical controller 58, it is connected between the laser diode LD of recorded information processor 56 and light picker 44.Recorded information processor 56 produces a user identification code by using the support address from supporting signal demoder 52, a user profile branch is made the user information block of a constant size.(for example, the frame of dividing by support synchronous signal PYre).Recorded information processor 56 is by joining the last user profile frame of constructing from the reference sync signal SYref of reference signal generator 54 with user identification code and user information block.The reference clock SCLK that produces according to reference signal generator 54 offers optical controller 58 with the user profile frame.Then, optical controller 58 switches on or off laser diode LD according to the logical signal of recorded information processor 56 output signals, thereby outstanding family allowable information frame is recorded on the slot type track 12 of the CD of being divided by support synchronous signal PYre 40.
In addition, optical disc recording apparatus comprises a control gear 60, its while and servo control mechanism 46, and motor driver 48 is connected with optical controller 58.The operation of control gear 60 control servo control mechanisms 46 and motor driver 48, and the operator scheme of optical controller 58.Control gear 60 inputs make it to search and support the position that address PAdd will visit on the CD 40 from the support address PAdd of supporting signal demoder 52.And, in another slot type track 12 that control gear 60 can make light picker 44 tracks jump to will to visit.
Fig. 7 is the detailed square circle of supporting signal demoder 52 shown in Figure 6.As shown in Figure 7, supporting signal demoder 52 comprises: a limiter 70 is used for receiving carrier signal PC shown in Figure 8 from carrier signal detecting device shown in Figure 6 50; With the integrator 72, a pair of phase clock regenerator 74 and the phase decoder 76 that are connected with limiter 70 simultaneously.Limiter 70 is according to the level amplitude limit that carries out carrier signal PC from the integrated signal of integrator 72, simultaneously to the shaping of level clipped signal, thereby produced the supporting carrier clock Pcp of pulse shown in Figure 8.72 couples of supporting carrier clock Pcp from limiter 70 of integrator carry out integration, and integrated signal is offered limiter 70, as the reference signal.Quarter-phase clock regenerator 74 by use phaselocked loop from the supporting carrier clock Pcp of limiter 70 bear again a Fig. 8 shown in quarter-phase clock PCLK.For this reason, the quarter-phase clock regenerator adopts structure as shown in Figure 9, will explain in detail below.Then, phase decoder 76 is by using the quarter-phase clock PCLK from quarter-phase clock regenerator 74, according to supporting carrier clock Pcp reconstruct quarter-phase signals DP S.More particularly, as shown in Figure 8, phase decoder 76 changes output logic according to the phase place whether phase place of quarter-phase clock PCLK is equal to supporting carrier clock Pcp, thus reconstruct quarter-phase signals DP S.
In addition, supporting signal demoder 52 comprises: a phase inverter 78 is used to make the quarter-phase clock PCLK from quarter-phase clock regenerator 74 anti-phase; With synchronous detecting device 80 and a pair of phase signal demoder 82 of common reception from the quarter-phase signals DP S of phase decoder 76.Synchronizing indicator 80 detects support synchronous signal PYre by using the anti-phase quarter-phase clock PCLKi from phase inverter 78 from quarter-phase signals DP S.Quarter-phase decoding signals 82, then, comes supporting information signal PFS decoding by the channel-decoding to channel bit-stream PCHB from quarter-phase signals DP S reconstruct channel bit-stream PCHB by anti-phase quarter-phase clock PCLKi.Quarter-phase clock decoder 82 detects by the support identification code part PID that supports that address PAdd and error correcting code EDC form from support information signal PFS by the support synchronous signal PYre from synchronizing indicator 80.Then, quarter-phase decoding signals 32 is corrected by error correcting code EDC and is occurred in the mistake of supporting among the PAdd of address, and produces an error signal ES, is used to represent the error correction state.Support address PAdd to indicate the physical location of each frame of being divided by support synchronous signal PYre, it is provided for recorded information processor 56 shown in Figure 6.Support synchronous signal PYre and error signal ES and required support address PAdd offer control gear shown in Figure 6 60 together.
Aforesaid supporting signal demoder 52 can comprise support synchronous signal PYre by the phase modulated carrier signal reconstruct one from carrier wave signal detector 50, supports the support information of address PAdd and error correcting code EDC.Therefore, supporting signal demoder 52 can with pick-up 44 shown in Figure 6 and carrier signal detecting device 50 together as the device of regeneration support information.
Fig. 9 at length shows quarter-phase clock regenerator 74 shown in Figure 7.As shown in Figure 9, quarter-phase clock regenerator 74 comprises: an edge detecting device 90 is used for receiving supporting carrier clock Pcp from limiter shown in Figure 7 70; One phase comparator 92; One integrator 94 and a voltage controlled oscillator (VCO) 96, the connection between them make and form a loop between edge detector 90 and frequency dividers 98.As long as the limit of display logic state mutation appears among the supporting carrier clock Pcp, edge detector 90 will produce the edge-impulse of a pulse form, as shown in figure 10.92 pairs of phase comparators compare from the phase place of the edge-impulse EP of limit detecting device 90 phase place with the oscillator signal PCK that produces at VCO96, with with final phase differential corresponding intervals in, the phase error signal of a certain logic (for example, a high logic) is kept in generation one.Then, integrator 94 equilibriums are from the phase error signal Pe of phase detectors 92, eliminate the noise signal of radio-frequency component, after this, impose on VCO96 through the signal of equilibrium.As a result, VCO96 produces an oscillator signal PCK, and its frequency is the twice (for example, six, eight, or ten times) of quarter-phase clock PCLK at least, and oscillator signal PCK is put on phase comparator 92 and frequency divider 98.At last, frequency divider 98 will be from the frequency of the oscillator signal PCK of VCO96 divided by a preset frequency partition coefficient (for example, 2,4,6,8 or 10).Thereby, produce quarter-phase clock PCLK.This quarter-phase clock PCLK is provided for phase decoder shown in Figure 7 76 and phase inverter 78.
As mentioned above, in an embodiment of CD pre-formatting device of the present invention, owing to the phase place of carrier signal along with comprising synchronizing signal and support the logical value of the support information of address to change that a bit support information is loaded on the carrier signal one-period.By this CD pre-formatting device, the support information of pre-formatting in CD can be divided into the unit record zone that is lower than a certain size with stepwise and slot type track.Therefore, have by the unnecessary waste of the posting field that caused during less than the recording capacity in a unit record zone when amount of user information being reduced to minimum according to the CD of supporting information on the CD pre-formatting device pre-formatting of the embodiment of the invention.In addition, have by improving its random access nature according to the CD of supporting information on the CD pre-formatting device pre-formatting of the embodiment of the invention.
And in optical disc recording apparatus according to an embodiment of the invention, user profile is to be recorded on the CD with the cutting state less than a certain size in the information of supporting of the phase modulation (PM) on the CD by pre-formatting.As a result, this optical disc recording apparatus can reduce to minimum with the unnecessary waste in the video disc recording zone of being caused during less than the recording capacity in a unit record zone when amount of user information.
Above by preferred embodiment shown in the drawings the present invention has been described as far as possible, for those those of ordinary skills, can find out obviously that from top description under the premise of without departing from the spirit of the present invention, the present invention has various changes and modifications.For example, the personnel that are proficient in present technique can understand changes under the situation of 90 ° rather than 180 ° carrier signal phase, and dibit is supported information and can be loaded on the one-period of carrier signal.Therefore, category of the present invention is not to be determined by the enforcement of diagram and description, but determine by appended claim and their equivalent.
Claims (18)
1. CD pre-formatting method, wherein, CD is supported information pre-formatting on the one-period carrier signal by loading at least one bit, and support information is used for the unit record volume of specified data.
2. CD pre-formatting method as claimed in claim 1, wherein, the phase place of described carrier signal changes with the logical value of described support information.
3. CD pre-formatting method as claimed in claim 2, wherein, according to the logical value of described support information, described carrier signal has two types phase place.
4. CD pre-formatting method as claimed in claim 2, wherein according to the logical value of described support information, described carrier signal has four types phase place.
5. CD pre-formatting method as claimed in claim 1 wherein, is supported the quarter-phase modulation of information by utilizing the quarter-phase clock, and according to the logical value of the support information of quarter-phase modulation it is carried out the phase in-migration and produce described carrier signal.
6. CD pre-formatting device, wherein, CD is by loading at least one bit information of supporting formula of formatting in advance on the one-period carrier signal, and this support information is used for the unit record volume of specified data.
7. CD pre-formatting device as claimed in claim 6, wherein, the phase place of described carrier signal changes with the logical value of described support information.
8. the pre-formula makeup of CD as claimed in claim 7 is put, and wherein, according to the logical value of described support information, described carrier signal has two types phase place.
9. CD pre-formatting device as claimed in claim 7, wherein, according to the logical value of described support information, described carrier signal has four types phase place.
10. CD pre-formatting device; wherein; CD is by loading a supporting signal pre-formatting on carrier signal; described supporting signal comprises a synchronous signal and a support address; synchronizing signal is used for the track of CD is divided into the unit record zone; support the address to be used to point out the physical location in each unit record zone of being divided by described synchronizing signal, described device comprises:
Be used to produce the element of described carrier signal; With
Be used for changing the phase modulation component of described carrier signal phase according to the logical value of described support information.
11. CD pre-formatting device as claimed in claim 10 also comprises:
Be used to produce the element of a pair of phase clock; With
Be used for modulating described support information, and the signal of modulation offered the digital modulation element of described phase modulation component by described quarter-phase clock.
12. CD pre-formatting device as claimed in claim 11, wherein, described digital modulation element carried out chnnel coding to described support information before described quarter-phase modulation.
13. support information reproduction method, may further comprise the steps for one kind:
Read carrier signal from CD, CD is that described support information is loaded on the carrier signal by the support information pre-formatting of specified data unit record volume;
By the carrier signal that reads being carried out phase modulation (PM), the described support information of reconstruct.
14. support information reproduction method as claimed in claim 13, wherein, the step of the described support information of reconstruct comprises by described carrier signal level amplitude limit that reads and the signal logic that produces the level amplitude limit are produced described support information.
15. support information regenerator, comprising for one kind:
Read the element of carrier signal from CD, CD is that described support information is loaded on the carrier signal by the support information pre-formatting of specified data unit record volume;
And phase modulation component, it passes through the phase modulation (PM) from the described carrier signal of described read element, the described support information of reconstruct.
16. support information regenerator as claimed in claim 15, wherein, described phasing device comprises a level limiter, is used for by to the horizontal amplitude limit from the described carrier signal of read element, and produces the signal message of level amplitude limit.
17. a compact disk recording method may further comprise the steps:
Detected carrier signal from the CD, CD is by the information of support pre-formatting, support information comprises that together going on foot signal and supports the address, synchronizing signal is used for the track of CD is divided into the unit record zone, supports the address to be used to point out the physical location in each unit record zone of being divided by synchronizing signal; Described support information is loaded on the described carrier signal;
By the described support of phase modulation (PM) reconstruct address to described carrier signal; With
By using described support address to record the user data on the CD.
18. an optical disc recording apparatus comprises:
Support information detecting element, be used for detecting a carrier signal from CD, CD is by the information of support pre-formatting, support information comprises that together going on foot signal and supports the address, synchronizing signal is used for the track of CD is divided into the unit record zone, support the address to be used to point out the physical location in each unit record zone of being divided by synchronizing signal, described support information is loaded on the described carrier signal;
By detect the phase modulation (PM) of the described carrier signal that the ground part detects, the element of the described support information of reconstruct by described support information; With
By using the described support address by described reconstruction elements reconstruct, the element of user data on CD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97121725A CN1188311A (en) | 1996-12-13 | 1997-12-12 | Method of pre-formatting optical disc and apparatus thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR65290/96 | 1996-12-13 | ||
| CN97121725A CN1188311A (en) | 1996-12-13 | 1997-12-12 | Method of pre-formatting optical disc and apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1188311A true CN1188311A (en) | 1998-07-22 |
Family
ID=5176402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97121725A Pending CN1188311A (en) | 1996-12-13 | 1997-12-12 | Method of pre-formatting optical disc and apparatus thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1188311A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373502C (en) * | 2004-07-22 | 2008-03-05 | 群联电子股份有限公司 | Effect of improving flash memory at low step format |
| CN105575409A (en) * | 2015-12-16 | 2016-05-11 | 天津天地伟业数码科技有限公司 | Method for writing MP4 file into optical disc under embedded host computer |
| CN111671583A (en) * | 2015-02-16 | 2020-09-18 | 移动2000（澳大利亚）有限公司 | Step climbing attachment for wheeled chair |
-
1997
- 1997-12-12 CN CN97121725A patent/CN1188311A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100373502C (en) * | 2004-07-22 | 2008-03-05 | 群联电子股份有限公司 | Effect of improving flash memory at low step format |
| CN111671583A (en) * | 2015-02-16 | 2020-09-18 | 移动2000（澳大利亚）有限公司 | Step climbing attachment for wheeled chair |
| CN105575409A (en) * | 2015-12-16 | 2016-05-11 | 天津天地伟业数码科技有限公司 | Method for writing MP4 file into optical disc under embedded host computer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5999504A (en) | Optical disc and optical disc apparatus for forming wobbled tracks | |
| EP1262976B1 (en) | Data recording/reproducing apparatus, method thereof, and data record medium | |
| EP0278006A1 (en) | A disc device and a disc-like recording medium | |
| CN1956073A (en) | Information recording medium | |
| US7715285B2 (en) | Information recording medium having a plurality of recording layers | |
| CN1156086C (en) | Phase locked loop circuit and reproducing apparatus provided with thereof | |
| US20020044511A1 (en) | High speed recording and reproducing method and apparatus of data recorded on disc | |
| CN1315121C (en) | Appliance for recording or playing back information having means for detecting or moving the scanning location | |
| JP4229950B2 (en) | Information recording method and apparatus | |
| KR100221111B1 (en) | Data recording method and data processing apparatus | |
| CN1188311A (en) | Method of pre-formatting optical disc and apparatus thereof | |
| CN1306494C (en) | High-density optical disc, and apparatus and method for reproducing/recording data thereon | |
| US7512051B2 (en) | Information processing apparatus | |
| JP3025472B2 (en) | Optical disk recording / reproducing device | |
| CN100501844C (en) | Disc-driving apparatus and method for controlling the same | |
| JP2615564B2 (en) | Data recording method | |
| JP2003308662A6 (en) | Information recording method and apparatus | |
| CN100383865C (en) | Multilayer optical disc having pregroove modulation. | |
| JP3551494B2 (en) | Data recording method and device, data reproducing method and device, data recording / reproducing method, and recording medium | |
| JP2637958B2 (en) | Disk-shaped recording medium | |
| JPH1166726A (en) | Optical disk device | |
| CN1774763A (en) | Reproduction apparatus and method | |
| JP2788789B2 (en) | optical disk | |
| JP2586461B2 (en) | Disk-shaped recording medium | |
| CN1185627A (en) | Light-disc and recording method and apparatus thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |