JP2010055742A - Recording method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording method which responds to a future improvement in a recording rate, properly controls an information recording device to record recording information, and easily improves standards for setting of the recording rate in future. <P>SOLUTION: The recording method for recording on a DVD 100 recording rate range information 21, includes steps of: setting multiple kinds of recording rate range information 21 indicating a recording rate range including a reference recording rate; assigning one piece of recording rate range information 21 to the DVD 100 from among the multiple kinds of recording rate range information 21; and recording the recording rate region information 21 on the DVD 100. The reference recording rate included in the one piece of recording rate range information 21 is set beyond the recording rate range indicated by another recording rate range information 21. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present application belongs to the technical field of recording methods, and more specifically, to the technical field of recording methods capable of recording recording information at one or more types of recording speeds.

  In recent years, DVDs (Digital Versatile Discs) as large-capacity recording media capable of recording recording information are becoming increasingly popular, and the recording speed for these recordable DVDs is also increasing rapidly.

  On the other hand, a CD (Compact Disc) or DVD as a conventional optical disk is manufactured in accordance with a preset standard, an information recording device for the disk, etc. in order to increase its versatility and promote its spread. Has been developed and manufactured. As for the improvement of the recording speed, in order to record the recorded information while improving the versatility between different types of information recording apparatuses, each manufacturer, etc. develops / discusses the optical disc in accordance with the preset recording speed standard. We have been manufacturing and developing information recording devices.

  At this time, the standard is formalized and distributed through various kinds of discussions and certification tests because it is necessary to make it well known.

  On the other hand, in an information recording apparatus for recording information on an optical disk, a recording condition at a first rotational speed (first recording speed) read from the loaded optical disk, and a first stored in the information recording apparatus. And a recording condition at a second rotational speed (first and second recording speeds) based on the recording condition at the second rotational speed of the loaded optical disk, and information is recorded on the optical disk. Is disclosed in Patent Document 1 below.

  On the other hand, in the lead-out start information of ATIP (Absolute Time In Pre-groove) information recorded in the pre-group in the lead-in area of the optical disc, the information on the recordable speed is recorded and recorded. When this is inserted, the readout start information is read, and the recording speed at that time is automatically set to the maximum settable speed within the range of the recordable speed indicated by the readout start information. Is disclosed in Patent Document 2 below.

JP-A-4-114318 JP 2000-113458 A

  However, in consideration of the recent remarkable demands for improvement of recording speed for optical discs, the new standards for the recording speed and the certification test each time a higher recording speed is newly realized. If the above is repeated, there is a problem that the realization of the standard is delayed as a result, and the technique for high-speed recording of the folding angle may be sufficiently generalized and not utilized.

  Therefore, the present application has been made in view of the above problems, and an example of the problem is that even if the recording speed is further improved in the future, an information recording apparatus or the like is provided correspondingly. It is an object of the present invention to provide a recording method capable of recording recorded information with accurate control and capable of easily expanding standards relating to recording speed setting in the future.

  In order to solve the above problems, the invention according to claim 1 is a recording method for recording recording speed range information on a recording medium, the recording speed including a basic recording speed and indicating a range of the recording speed. A step of setting a plurality of types of range information, a step of assigning one recording speed range information to the recording medium among the plurality of types of the recording speed range information, and recording the recording speed range information on the recording medium And the basic recording speed included in the one recording speed range information is configured to be a recording speed outside the recording speed range indicated by the other recording speed range information.

  In order to solve the above-mentioned problem, the invention according to claim 2 is a recording method for recording record information on a recording medium prerecorded by the recording method according to claim 1, wherein the recording information is recorded from the recording medium to the recording medium. A step of acquiring recording speed range information; a step of determining whether the recording information is recordable on the recording medium based on the acquired recording speed range information; and a determination of being recordable on the recording medium And recording at least the recording information on the recording medium at the basic recording speed included in the acquired recording speed range information.

It is a figure which shows the physical format etc. in DVD of embodiment, (a) is a figure which shows the said physical format, (b) is a figure explaining the concept of recording speed range information. It is a block diagram which shows the schematic structure of the recorder of embodiment. It is a flowchart which shows the recording process of embodiment.

  Next, the form for implementing this application is demonstrated based on drawing. The embodiment described below is an embodiment in a case where the present application is applied to a recordable DVD and a recorder as an information recording apparatus for recording record information on the DVD.

(I) Embodiment of DVD First, an embodiment of a recording DVD according to the present application will be described with reference to FIG. FIG. 1 is a diagram showing a physical recording format in the DVD according to the embodiment.

  As shown in FIG. 1A, a recording DVD 100 according to the embodiment is specifically a DVD-R (DVD-Recordable) using a dye film or the like as its recording layer, and a phase change film as its recording layer. This is realized as a DVD-RW (DVD-Re-Recordable) or a DVD-RAM (DVD-Rewritable) used as a DVD-RW. The control information area SC in which the control information to be read out is recorded, and the control information area SC in which the control information read out at the time of recording / reproducing information on the DVD 100 and used for various control processes is recorded. And the data area DA where the recording information that is actually the target of recording / reproduction is recorded (or recorded) and the recording information for the DVD 100 are read out when the recording / reproduction is finished. Control information is composed of a lead-out area LO are recorded to.

  At this time, in the control information area SC, when recording information is recorded on the DVD 100 and the reproduction control information 20 necessary for reproducing the data area DA, such as disc type information indicating the type of the DVD 100 and information indicating the standard version number. Recording speed range information 21 according to the present application indicating a preset recording speed range to be used, and maximum recording speed information according to the present application indicating the fastest recording speed that can be physically used when recording information on the DVD 100 22, the minimum recording speed information 23 according to the present application indicating the slowest recording speed that can be physically used when recording the recording information on the DVD 100, and other information 24 that is other information as the control information, It is recorded in advance on a recording track by so-called pre-write or emboss pit. At this time, the other information 24 includes strategy information for setting a strategy waveform to be described later for each recording speed.

  At this time, the control information area SC may be formed in the lead-in area LI, and can be read out as sub-information of the recording track by using so-called land prepits or wobbling of the recording track. Further, it may be formed overlappingly in the recording area where the recording information is recorded.

  Next, the recording speed range information 21 will be described in more detail with reference to FIG.

  As described above, the recording speed range information 21 is already recorded in the DVD 100 at the time of shipment after the DVD 100 is manufactured, and the recording speed to be used when recording the recording information on the DVD 100 on which it is recorded. As information indicating the range, the manufacturer of the DVD 100 previously sets the content (recording speed falling within the range indicated by the recording speed range information 21).

  In setting the contents of the recording speed range information 21, at least one recording speed that can be used when recording information is recorded on the DVD 100 is set as the basic recording speed. When there are two types of DVDs 100 having different recording speed ranges, the basic recording speed corresponding to at least one type of DVD 100 is indicated by the recording speed range information 21 recorded on the other type of DVD 100. The contents of the recording speed range information for each DVD 100 are set in advance so that the recording speed is out of the recording speed range.

  More specifically, for example, as shown in FIG. 1B, the normal speed recording (indicated as “× 1” in FIG. 1B) and the double speed recording (in FIG. 1B, “× 2”). 1) is recorded with first recording speed range information 21-1 indicating that the recording speed is the same speed or double speed. In the first recording speed range information 21-1, the basic recording speed is the same speed (indicated by a double circle in FIG. 1B), and the first recording speed range information 21-1 In the recorded information recording apparatus for the DVD 100, each parameter or the like in the information recording apparatus must be set so that recording information can be recorded at least at the same speed.

  Similarly, in the DVD 100 for double-speed recording to eight-times speed recording (indicated as “× 8” in FIG. 1B), the recording speed can be set in the range of double speed to eight-times speed. 2 Recording speed range information 21-2 is recorded. In the second recording speed range information 21-2, the basic recording speed is quadruple speed. In the information recording apparatus for the DVD 100 in which the second recording speed range information 21-2 is recorded, Each parameter or the like in the information recording apparatus must be set so that recording information can be recorded at least at quadruple speed.

  Similarly, the recording speed of the DVD 100 for 12 × speed recording (shown as “× 12” in FIG. 1B) to 16 × speed recording (shown as “× 16” in FIG. 1B) is The third recording speed range information 21-3 indicating that the speed is 12 × speed or 16 × speed. In the third recording speed range information 21-3, the basic recording speed is set to 12 times speed. In the information recording apparatus for DVD 100 in which the third recording speed range information 21-3 is recorded, Each parameter or the like in the information recording apparatus must be set so that recording information can be recorded at least at 12 × speed.

  As the first recording speed range information 21-1, the second recording speed range information 21-2, or the third recording speed range information 21-3, the values of the recording speeds themselves are recorded. Instead, the information recording apparatus can recognize that the recording speed applied to the DVD 100 falls within the recording speed range separately defined in the standard as the first recording speed range information 21-1, for example. Each recording speed range information is recorded in a mode (more specifically, a mode in which the name “first recording range information” itself is recorded).

  In the example shown in FIG. 1B, the basic recording speed (equal speed) of the first recording speed range information 21-1 is outside the recording speed range indicated by the second recording speed range information 21-2. The basic recording speed (fourfold speed) of the second recording speed range information 21-2 is a recording speed outside the recording speed range indicated by the first recording speed range information 21-1. Yes.

  Furthermore, the basic recording speed (fourfold speed) of the second recording speed range information 21-2 is a recording speed outside the recording speed range indicated by the third recording speed range information 21-3, and the third recording speed The basic recording speed (12 × speed) of the speed range information 21-3 is a recording speed outside the recording speed range indicated by the second recording speed range information 21-2.

  In this example, the basic recording speed of the first recording speed range information 21-1 may be changed to double speed, or the basic recording speed of the second recording speed range information 21-2 is changed to double speed. May be. Even if the basic recording speed of the first recording speed range information 21-1 is changed to the double speed, the basic recording speed (quad speed) of the second recording speed range information 21-2 is the first recording speed range information. This is because the condition of the recording speed outside the range of the recording speed indicated by 21-1 is maintained. Similarly, even if the basic recording speed of the second recording speed range information 21-2 is changed to double speed, the basic recording speed (equal speed) of the first recording speed range information 21-1 is the second recording speed range. This is because the condition that the recording speed is out of the range of the recording speed indicated by the information 21-2 is maintained.

  Furthermore, in the above-described embodiment, for example, for the DVD 100 on which the second recording speed range information 21-2 is recorded, the DVD 100 is recorded in the recording speed range indicated by the second recording speed range information 21-2 (that is, It is not necessary to be able to record at all of double speed, quadruple speed (basic recording speed), 6 times speed and 8 times speed), and it is configured so that recording information can be recorded at the basic recording speed. For example, it is possible to record information at, for example, 2 ×, 4 ×, and 6 × speeds, but it is acceptable to have a configuration that cannot record this information at 8 × speed.

(II) Embodiment of Recorder Next, with respect to the embodiment of the recorder that records the recording information on the DVD 100 in which each control information is already recorded using the physical format described above, FIGS. It explains using.

  FIG. 2 is a block diagram showing a schematic configuration of the recorder according to the embodiment, and FIG. 3 is a flowchart showing a recording process executed in the recorder.

  As shown in FIG. 2, the recorder R of the embodiment includes a spindle motor 1, a pickup 2, a driver 3, a strategy control unit 4, a modulation unit 5, a synthesis unit 6, an A / D converter 7, The decoder 8, the CPU 9, the memory 10, the display 11, the input unit 12, and the servo control unit 13 are configured.

  Next, the overall operation will be described.

  First, recording information Sin to be recorded on the DVD 100 loaded in the recorder R is digitized by the A / D converter 7 when it is input from the outside, and is sent to the synthesizing unit 6 as digital recording information Sdin. Is output.

  The synthesizing unit 6 superimposes and synthesizes the reproduction control information 20 and the like used when reproducing the recorded information after recording on the digital recording information Sdin based on the control information Scm from the CPU 9 to produce the synthesized recording information Smix. Is output to the modulation unit 5.

  Next, based on the control information Sce from the CPU 9, the modulation unit 5 performs a modulation process such as 8-16 modulation on the combined recording information Smix and outputs the modulation information Sen to the strategy control unit 4.

  The strategy control unit 4 is a drive pulse for modulating and driving a semiconductor laser (not shown) in the pickup 2 based on the modulation information Sen based on the control information Scs from the CPU 9, and is a recording pit formed on the DVD 100. A drive pulse that has undergone processing for shaping the shape is generated and output to the driver 3 as a pulse signal Ssr.

  As a result, the driver 3 amplifies the pulse signal Ssr with a preset amplification factor, generates a drive signal Sd for actually driving the semiconductor laser, and outputs it to the pickup 2.

  Next, the pickup 2 drives the built-in semiconductor laser using the drive signal Sd, generates a light beam B for information recording, and outputs it to the DVD 100. Then, by irradiating the recording layer (not shown) in the DVD 100 with the light beam B, recording pits corresponding to the contents of the recording information Sin are formed on the recording layer, thereby recording the recording information Sin. Is done.

  At this time, the pickup 2 irradiates the control information area SC of the DVD 100 with the light beam B having a certain intensity prior to recording the recording information Sin, and records the recording speed range information 21, the maximum recording speed information 22, and the minimum recording speed. Information 23 and strategy information are detected and output to the decoder 8 as a detection signal Spu.

  Then, the decoder 8 decodes the content of each information in the detection signal Spu and outputs it to the CPU 9 as decoded information Sdc.

  Thereby, the CPU 9 generates each control information Scs (including the strategy information), Sce and Scm, and control information Ssc described later to control the operation of each component based on the content of the decryption information Sdc. It outputs to each structural member corresponding to each, and these structural members are integratedly controlled.

  On the other hand, the rotational speed of the DVD 100 (in other words, the recording speed of the recording information Sin) is controlled based on the control information Sss from the servo control unit 13.

  Further, control of the focal position of the light beam B (that is, tracking servo control in the direction parallel to the recording layer in the DVD 100 and focus servo control in the direction perpendicular to the recording layer) is performed by the control information Ssp from the servo control unit 13. Controlled based on

  For this reason, the servo control unit 13 generates the control information Sss and Ssp based on the control information Ssc from the CPU 9 to respectively generate the spindle motor 1 and the pickup 2 (more specifically, not shown in the pickup 2). Output to the actuator).

  Information necessary for the CPU 9 to perform overall control of these operations is temporarily stored in the memory 10 as memory information Sm, and is read again as necessary to be used for the overall control.

  Further, information indicating an operation to be realized by the recorder R is input by the user in the input unit 12, and an operation signal Sop corresponding to this input operation is output from the input unit 12. The CPU 9 operates based on the contents of the operation signal Sop, thereby realizing a desired operation as the recorder R.

  Furthermore, the operation state and the like of the recorder R are displayed on the display 11 made of a liquid crystal display or the like based on the display signal Sdp indicating the operation state from the CPU 9.

  Next, the recording process according to the embodiment in the recorder R having the above configuration will be specifically described with reference to FIG.

  As shown in FIG. 3, in the recording process of the embodiment, when the DVD 100 is first loaded in the recorder R and a recording start operation is performed in the input unit 12, necessary control information is read from the lead-in area LI in the DVD 100. (Step S1), the recording speed range information 21, the maximum recording speed information 22, the minimum recording speed information 23 and the strategy information are detected and decoded from the control information area SC (Step S2) and temporarily stored in the memory 10. .

  Next, based on the content of the recording speed range information 21, it is confirmed whether or not a recording speed that can be executed using the DVD 100 loaded in the recording speed range that can be executed by the recorder R is included ( In step S3), when there is no recording speed executable using the DVD 100 loaded within the range of recording speed executable in the recorder R (step S3; NO), the currently loaded DVD 100 contains Since information recording by the recorder R is impossible, the DVD 100 is ejected from the recorder R (step S4), and the recording process of the embodiment is terminated.

  On the other hand, if it is determined in step S3 that the recording speed that can be executed using the DVD 100 loaded in the range of the recording speed that can be executed in the recorder R is included (step S3; YES), the recording speed is next. The recording speed range indicated by the range information 21 (for example, in the case of the second recording speed range information 21-2 shown in FIG. 1B, double speed, quadruple speed, six times speed and eight times speed) and the maximum recording speed information 22 And the content of the minimum recording speed information 23 are confirmed in the CPU 9 (step S6), and the recording speed designation operation desired at that time is executed in the input unit 9 (step S5). In this case, an error rate associated with recording / reproduction on the DVD 100 may be detected, and the CPU 9 may automatically specify an optimum recording speed based on the content.

  Then, whether or not the actual recording operation is possible using the designated recording speed (step S5) is indicated by the recording speed range recognized as the designated recording speed (that is, the recording speed range information 21). A range of recording speeds or a recording speed that is equal to or lower than the maximum recording speed indicated by the maximum recording speed information 22 and is equal to or higher than the minimum recording speed indicated by the minimum recording speed information 23). (Step S7) When an actual recording operation is possible using the designated recording speed (Step S7; YES), the control information Sss is used to rotate the DVD 100 at the designated recording speed. And the DVD 100 is rotated at the designated recording speed (step S8), and recording of the recording information Sin is executed (step S8). S10).

  Then, it is confirmed whether or not all the recording information Sin has been recorded (step S11). If the recording has not been completed (step S11; NO), the process returns to step S10 to continue the recording process. When all of them are completed (step S11; YES), the recording process of the embodiment is completed as it is.

  On the other hand, when the recording operation using the designated recording speed is not possible in the determination in step S7 (step S7; NO), the recording speed recognized using the recording speed range information 21 is The recording information Sin is recorded using the recording speed closest to the designated recording speed (step S9). Thereafter, the recording information Sin is recorded by repeating the steps S10 and S11 using the closest recording speed.

  As described above, according to the operation of the recorder R of the embodiment, since the recording speed range information 21 including at least the basic recording speed is recorded in the control information area SC, the recording information Sin on the DVD 100 is recorded. By reading the recording speed range information 21 and using it for setting the recording speed at the time of recording, the recorder R or the like can be accurately handled even if the recording speed is further improved in the future. The recording information Sin can be recorded under control, and the standard for setting the recording speed can be easily expanded in the future.

  In this case, the actual recording process may be executed on the basis of the other recording speed or the contents of other strategy processes set independently for the recorder R based on the recording speed indicated by the recording speed range information 21. it can.

  Further, the contents of the recording speed range information 21 in each type of DVD 100 are previously stored in advance so that the basic recording speed corresponding to one type of DVD 100 becomes a recording speed outside the recording speed range corresponding to other types of DVD 100. Therefore, when manufacturing and selling each type of DVD 100, it is possible to manufacture and sell the DVD 100 corresponding to a wide range of recording speeds while specializing the optimum recording speed for each DVD 100.

  Further, since the maximum recording speed information 22 and the minimum recording speed information 23 are further recorded together, the tracking performance to the change in the recording speed of the DVD 100 can be fully utilized, and many kinds of recording speeds can be obtained. A wide variety of information recording can be performed.

  Furthermore, the maximum recording speed information 22 and the minimum recording speed information 23 are further recorded together, and the recording speed range in which the designated recording speed is recognized by the maximum recording speed information 22 and the minimum recording speed information 23. Since the recording information Sin is recorded on the DVD 100 at the designated recording speed, many kinds of recording speeds are used by fully utilizing the tracking performance of the recording speed of the DVD 100. A wide variety of information recording can be performed.

  Further, when the designated recording speed is not included in the range of the recording speed of the DVD 100, the recording information Sin is recorded using any recording speed that can be used in the recorder R when recording the recording information Sin on the DVD 100. Is recorded on the DVD 100, the recording information Sin can be recorded using an optimum recording speed for the DVD 100.

  In the above-described embodiment, the case where the present application is applied to the recorder R that records the recording information Sin on the DVD 100 has been described. However, other than this, an existing recordable CD or a currently developed DVD is used. In addition, the present application can also be applied to a recorder that records information on an optical disk having a higher recording capacity.

  Further, the program corresponding to the flowchart shown in FIG. 3 is acquired and recorded via a network such as the Internet, or recorded on an information recording medium such as a flexible disk or a hard disk, and these are stored in a general-purpose microcomputer. It is also possible to make the general-purpose microcomputer function as the CPU 9 according to the embodiment by reading and executing the above.

DESCRIPTION OF SYMBOLS 1 Spindle motor 2 Pickup 3 Driver 4 Strategy control part 5 Modulation part 6 Synthesis | combination part 7 A / D converter 8 Decoder 9 CPU
DESCRIPTION OF SYMBOLS 10 Memory 11 Display 12 Input part 13 Servo control part 21 Recording speed range information 22 Maximum recording speed information 23 Minimum recording speed information R Recorder

Claims (3)

A recording method for recording recording speed range information on a recording medium,
Including a basic recording speed and setting a plurality of types of the recording speed range information indicating a recording speed range;
Assigning one recording speed range information to the recording medium among the plurality of types of recording speed range information;
Recording the recording speed range information on the recording medium;
Including
A recording method, wherein the basic recording speed included in one recording speed range information is a recording speed outside a recording speed range indicated by the other recording speed range information. A recording method for recording recording information on a recording medium prerecorded by the recording method according to claim 1,
Obtaining the recording speed range information from the recording medium;
Determining whether the recording information is recordable on the recording medium based on the acquired recording speed range information;
A step of recording the recording information at least on the recording medium at the basic recording speed included in the acquired recording speed range information when it is determined that recording is possible on the recording medium;
A recording method comprising: The recording method according to claim 2,
Further comprising obtaining maximum recording speed information and minimum recording speed information from the recording medium,
The step of determining includes
Identifying a recording speed range usable for the recording medium based on the acquired maximum recording speed information and the minimum recording speed information;
Assigning a recording speed within the recording speed range used for the recording medium;
Determining whether the assigned recording speed is included in the acquired recording speed range;
A recording method further comprising:

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