JP4450420B2 - Recording method, information recording apparatus, program, and recording medium - Google Patents

Description

The present invention records a method, information recording apparatus, relates to a program and a recording medium, more specifically, the information recording recording method and information recording apparatus for recording information on an optical disc having three or more recording layers capable The present invention relates to a program used in the information recording apparatus and a recording medium on which the program is recorded.

  In recent years, with the advancement of digital technology and the improvement of data compression technology, DVD (digital versatile disc) and the like are used as media for recording information (hereinafter also referred to as “content”) such as music, movies, photos, and computer software. Optical discs have attracted attention, and along with the reduction in price, optical disc apparatuses that use optical discs as information recording media have become widespread.

  Incidentally, the amount of content information tends to increase year by year, and further increase in the recording capacity of the optical disc is expected. Thus, as one of means for increasing the recording capacity of the optical disk, it is conceivable to make the recording layer multi-layered, and an optical disk having a plurality of recording layers (hereinafter also referred to as “multi-layer disk”) and an optical disk for accessing the multi-layer disk. The development of equipment is being actively conducted.

  Further, various proposals have been made for countermeasures against defects in optical disks (see, for example, Patent Document 1 to Patent Document 3). However, in multilayer disks having three or more recording layers, Patent Documents 1 to 3 describe. The disclosed countermeasures for defects may not always be appropriate countermeasures.

  Although the present multi-layer disc having three or more recording layers is not commercially available, it may be marketed if there is a demand for further increase in recording capacity in the future. In that case, a method for recording information with a stable recording quality on a multi-layer disc having three or more recording layers is required.

JP 2000-285607 A JP 2002-358647 A JP 2003-288759 A

The present invention has been made under such circumstances, and a first object of the present invention is to provide a recording method and an information recording apparatus capable of performing recording with stable recording quality on the optical disk of the present invention.

A second object of the present invention is a program that is executed by a control computer of an information recording apparatus and that enables stable recording quality recording on an optical disk of the present invention, and a recording medium on which the program is recorded. It is to provide.

From the first viewpoint, the present invention has three or more recording layers capable of recording information, and spiral or concentric tracks are formed in each of the recording layers, and are set in advance in each recording layer. A recording method for recording information on an optical disc in which at least one of the pattern and content information is formed as physical pits using an information recording device, and a target recording layer that is a recording layer on which the information is recorded on the optical disc Replaying the physical pits formed on the object; determining whether or not the physical pits are correctly reproduced; and as a result of the determination, if the physical pits are correctly reproduced, and recording on the recording layer; and a step of reproducing the information recorded on the target recording layer; a step of determining whether the information has been correctly reproduced; said-size As a result, when the information is not reproduced correctly, the information recording area is recorded as a defective area on the optical disc and one of the recording layers excluding the target recording layer in the optical disc. A recording method comprising: designating one recording layer as a replacement recording layer; and recording on the optical disc that the designated recording layer is a replacement recording layer .
From the second point of view, the present invention has three or more recording layers capable of recording information, and spiral or concentric tracks are formed in each of the recording layers, and are set in advance in each recording layer. A recording method for recording information on an optical disc in which at least one of the pattern and content information is formed as physical pits using an information recording device, and a target recording layer that is a recording layer on which the information is recorded on the optical disc Replaying the physical pits formed on the object; determining whether or not the physical pits are correctly reproduced; and as a result of the determination, if the physical pits are correctly reproduced, A step of recording on a recording layer; if the physical pit is not correctly reproduced as a result of the determination, the target recording layer is a defective recording layer; A recording method comprising: a step of recording on the disc.

According to these, information recording has three or more recording layers as possible, each of the recording layer spiral or concentric tracks are formed in a preset pattern and content in the recording layer Recording can be performed with stable recording quality on an optical disc in which at least one of information is formed as physical pits.

In this case, in the step of pre-Symbol specified, in the recording layer which can be a recording layer for replacement, may be to specify the recording layer closest to the target recording layer.

In the above SL each recording method, the unrecorded area in the recording layer which is pre SL designated is eliminated, a step of newly designated recording layer for replacement; the newly designated recording layer in the recording layer for the replacement And recording the information on the optical disc.

In the above SL each recording method, it is possible prior to the step of reproducing pre Symbol physical pits, and further comprising the step of correcting the aberrations of the optical system constituting the information recording apparatus in accordance with the target recording layer.

From the third point of view, the present invention has three or more recording layers capable of recording information, and spiral or concentric tracks are formed in each of the recording layers, and each recording layer is preset. An information recording apparatus capable of recording information on an optical disc in which at least one of the pattern and content information is formed as physical pits, and an optical pickup device; depending on a target recording layer on which the information is recorded on the optical disc A control device that corrects aberrations of the optical system constituting the optical pickup device; when a physical pit formed in the target recording layer is reproduced, and when the physical pit is correctly reproduced, the control device passes through the optical pickup device. the information after recording in the target recording layer, reproducing the information recorded on the target recording layer Te, the information has not been correctly reproduced field In addition, the fact that the area in which the information is recorded is a defective area is recorded on the optical disc, and one recording layer of the optical disc excluding the target recording layer is designated as a replacement recording layer. And a processing device that records on the optical disc that the designated recording layer is a replacement recording layer .
From the fourth viewpoint, the present invention has three or more recording layers capable of recording information, and spiral or concentric tracks are formed on each of the recording layers, and the recording layers are set in advance. An information recording apparatus capable of recording information on an optical disc in which at least one of the pattern and content information is formed as physical pits, and an optical pickup device; depending on a target recording layer on which the information is recorded on the optical disc A control device for correcting aberrations of an optical system constituting the optical pickup device; when the physical pit formed in the target recording layer is reproduced and the physical pit is reproduced correctly, the optical pickup device When the information is recorded on the target recording layer via the recording medium and the physical pit is not reproduced correctly, the target recording layer is An information recording apparatus provided with: a processing device for recording on the optical disc that is.

According to these, information recording has three or more recording layers as possible, each of the recording layer spiral or concentric tracks are formed in a preset pattern and content in the recording layer Recording can be performed with stable recording quality on an optical disc in which at least one of information is formed as physical pits.

In this case, pre-Symbol processor, upon the designation, in the recording layer which can be a recording layer for replacement, may be to specify the recording layer closest to the target recording layer.

In the above SL each information recording device, pre-Symbol processing apparatus, when the unrecorded area in the designated recording layer is eliminated, along with the newly designated recording layer for replacement, the newly designated recording layer is replaced It can be recorded on the optical disc that it is a recording layer for use.

From the fifth viewpoint, the present invention has three or more recording layers capable of recording information, and spiral or concentric tracks are formed on each of the recording layers, and the recording layers are preset in each recording layer. Target recording which is a program used in an information recording apparatus capable of recording information on an optical disc in which at least one of the pattern and content information is formed as a physical pit, and is a recording layer on which the information is recorded on the optical disc A procedure for reproducing physical pits formed in a layer; a procedure for determining whether or not the physical pits are correctly reproduced; and if the physical pits are correctly reproduced as a result of the determination, procedures and for reproducing the information recorded on the target recording layer; procedure for determining whether the information has been correctly reproduced procedures and to be recorded on the target recording layer When the information is not correctly reproduced as a result of the determination, the information recording area is recorded as a defective area on the optical disc, and the recording layer of the optical disc excluding the target recording layer is recorded. A procedure for designating one of the recording layers as a recording layer for replacement; a procedure for recording on the optical disc that the designated recording layer is a recording layer for replacement; and for controlling the information recording apparatus A program to be executed by a computer.
From the sixth aspect, the present invention has three or more recording layers capable of recording information, and spiral or concentric tracks are formed in each of the recording layers, and are set in advance in each recording layer. Target recording which is a program used in an information recording apparatus capable of recording information on an optical disc in which at least one of the pattern and content information is formed as a physical pit, and is a recording layer on which the information is recorded on the optical disc A procedure for reproducing physical pits formed in a layer; a procedure for determining whether or not the physical pits are correctly reproduced; and if the physical pits are correctly reproduced as a result of the determination, A procedure for recording on the target recording layer; and if the physical pit is not correctly reproduced as a result of the determination, the target recording layer is a defective recording layer. Procedures and to be recorded on the optical disc the door; which is a program to be executed by a control computer of the information recording apparatus.

According to these, information recording has three or more recording layers as possible, each of the recording layer spiral or concentric tracks are formed in a preset pattern and content in the recording layer It is possible to perform recording with stable recording quality on an optical disc in which at least one of information is formed as physical pits.

In the above SL each program, prior to the procedure of reproducing pre Symbol physical pits, the procedure for correcting the aberration of the optical system constituting the information recording apparatus in accordance with the target recording layer, further executes the control computer Can be.

From the seventh viewpoint, the present invention is a computer-readable recording medium on which the program of the present invention is recorded.

According to this, since the program of the present invention is recorded, the computer has three or more recording layers capable of recording information by being executed , and each of the recording layers has a spiral shape or a concentric shape. Thus, it is possible to perform recording with stable recording quality on an optical disc in which at least one of a preset pattern and content information is formed as a physical pit on each recording layer .

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a schematic configuration of an optical disc apparatus 20 as an information recording apparatus according to an embodiment of the present invention.

  An optical disk apparatus 20 shown in FIG. 1 includes a spindle motor 22 that rotates and drives an optical disk 15, an optical pickup apparatus 23, a seek motor 21 that drives the optical pickup apparatus 23 in a sledge direction, a laser control circuit 24, an encoder 25, and a motor. A control circuit 26, a servo control circuit 27, a reproduction signal processing circuit 28, a buffer RAM 34, a buffer manager 37, an interface 38, a flash memory 39, a CPU 40, a RAM 41, and the like are provided. In addition, the connection line in FIG. 1 shows the flow of a typical signal and information, and does not represent all the connection relationships of each block. The optical disk device 20 is assumed to be compatible with an optical disk having a plurality of recording layers.

  The optical disk 15 corresponds to a light beam having a wavelength of about 780 nm, and has three recording layers L0, L1, and L2 in order from the closest to the optical pickup device 23 as shown in FIG. Yes. In each recording layer, a preset pattern is formed at a predetermined position as a physical pit. The physical pit may include address information and content information of the recording layer. Each recording layer is provided with a management information area. In this management information area, as shown in FIG. 3 as an example, information related to recording layers, defect information, close information, layer parameters described later, information related to files recorded in the user data area, and the like are recorded. An area (management area 1 and management area 2), a test writing area used for obtaining appropriate recording power, and the like are provided. Further, the substrate material of the optical disk 15 is polycarbonate.

  In the present embodiment, as an example, in each recording layer, physical pits are formed at two locations on the inner periphery and the outer periphery of the disc. Here, the radial positions of the physical pits are different from each other. In the present embodiment, the radial position means a distance from the center of rotation of the disk. In each recording layer, management information areas are provided at two locations on the inner periphery and the outer periphery of the disc (see FIG. 2).

  The optical pickup device 23 is a device for irradiating a recording layer (target recording layer) to be accessed on the optical disc 15 with laser light and receiving reflected light from the target recording layer. As shown in FIG. 4 as an example, the optical pickup device 23 includes a light source LD, a collimator lens 52, a prism 53, a beam splitter 54, a beam expander 56, a detection lens 58, an objective lens 60, and light reception as a photodetector. And a driving system (focusing actuator and tracking actuator (both not shown)).

  The light source LD is a semiconductor laser that emits a laser beam having a wavelength of about 780 nm. Note that the maximum intensity emission direction of the light beam emitted from the light source LD is the + X direction. The collimating lens 52 is disposed on the + X side of the light source LD, and the light beam emitted from the light source LD is set as substantially parallel light.

  The beam splitter 54 is disposed on the + X side of the collimating lens 52, transmits the light beam from the collimating lens 52, and branches the light beam (return light beam) reflected by the target recording layer of the optical disc 15 in the -Z direction.

  The beam expander 56 is disposed on the + X side of the beam splitter 54, and drives at least one of a concave lens 56a as a negative lens, a convex lens 56b as a positive lens, and the concave lens 56a and the convex lens 56b (interval between the two lenses). And a lens driving device 56c that changes the lens distance). When the lens interval changes, the divergence angle of the light beam emitted from the beam expander 56 changes, and the spherical aberration changes. The lens interval is controlled by a layer parameter signal from the CPU 40.

  The prism 53 is disposed on the + X side of the beam expander 56, and bends the optical path of the light beam from the beam expander 56 in the + Z direction. Note that a reflecting mirror may be used instead of the prism 53. The objective lens 60 is disposed on the + Z side of the prism 53.

  The detection lens 58 is disposed on the −Z side of the beam splitter 54, and the return light beam branched in the −Z direction by the beam splitter 54 is condensed on the light receiving surface of the light receiving device PD. The light receiver PD has a plurality of light receiving regions (or light receiving elements), and outputs a signal (photoelectric conversion signal) corresponding to the amount of received light for each light receiving region (or light receiving element).

  The focusing actuator (not shown) is an actuator for minutely driving the objective lens 60 in the focus direction that is the optical axis direction of the objective lens 60. The tracking actuator (not shown) is an actuator for minutely driving the objective lens 60 in a tracking direction which is a direction orthogonal to the tangential direction of the track.

  In this embodiment, the wavefront aberration is minimized when substantially parallel light is incident on the objective lens 60, and the condensing position at that time (hereinafter also referred to as “aberration reference position”) is 0 from the incident surface of the optical disk 15. It is assumed that the position is set to be 53 mm (see FIG. 5). As the distance from the aberration reference position increases, the aberration increases substantially linearly as shown in FIG. 5 as an example, even if adjustment is performed by the beam expander 56. However, when the distance from the incident surface is 0.41 mm to 0.65 mm, the aberration can be 0.02 RMS or less which is generally allowed. This means that, for example, if the interlayer distance is 10 μm, it can be applied to a multi-layer disc having about 25 recording layers. In this embodiment, when adjusting the aberration at a distance of 0.41 mm from the incident surface, the lens interval is 12.3 mm, and when adjusting the aberration at a distance of 0.45 mm from the incident surface. The lens interval is 11.2 mm, and when adjusting the aberration at a distance of 0.49 mm from the incident surface, the lens interval is 9.8 mm, and when the aberration is adjusted at a distance of 0.53 mm from the incident surface. The lens interval is 8.5 mm, and when adjusting the aberration when the distance from the incident surface is 0.57 mm, the lens interval is 6.8 mm and when adjusting the aberration when the distance from the incident surface is 0.61 mm. The lens interval is 5.0 mm, and the lens interval when adjusting the aberration at a distance of 0.65 mm from the incident surface is 2.6 mm.

  In this embodiment, the recording layer L0 is at a position 0.49 mm from the incident surface of the optical disk 15, the recording layer L1 is at a position 0.53 mm from the incident surface, and recording is performed at a position 0.57 mm from the incident surface. Assume that there is a layer L2.

  Returning to FIG. 1, the reproduction signal processing circuit 28 includes an I / V amplifier 28a, a servo signal detection circuit 28b, a wobble signal detection circuit 28c, an RF signal detection circuit 28d, a decoder 28e, a β detection circuit 28f, and the like. .

  The I / V amplifier 28a converts the output signal of the light receiver PD into a voltage signal and amplifies it with a predetermined gain.

  The servo signal detection circuit 28b detects servo signals such as a focus error signal and a track error signal based on the output signal of the I / V amplifier 28a. The servo signal detected here is output to the servo control circuit 27.

  The wobble signal detection circuit 28c detects a wobble signal based on the output signal of the I / V amplifier 28a. The detected wobble signal is output to the decoder 28e.

  The RF signal detection circuit 28d detects an RF signal based on the output signal of the I / V amplifier 28a. The RF signal detected here is output to the decoder 28e and the β detection circuit 28f.

  The decoder 28e extracts address information, a synchronization signal, optical disc vendor information, strategy information, and the like from the wobble signal. The extracted address information, vendor information, and strategy information are output to the CPU 40, and the synchronization signal is output to the encoder 25. The decoder 28e performs a decoding process and an error detection process on the RF signal. When an error is detected, the decoder 28e performs an error correction process, and then stores the reproduced data in the buffer RAM 34 via the buffer manager 37. To do.

  The β detection circuit 28f acquires a so-called β value based on the peak level and the bottom level of the RF signal. The β detection circuit 28f obtains the amplitude of the RF signal and notifies the CPU 40 of it.

  The servo control circuit 27 includes an ACT controller 27a, an ACT driver 27c, an SA controller 27d, and an SA driver 27e.

  The ACT controller 27a generates a focus control signal for correcting a focus shift based on the focus error signal, and generates a tracking control signal for correcting a track shift based on the track error signal. The focus control signal and tracking control signal generated here are output to the ACT driver 27c.

  The ACT driver 27c outputs a focusing actuator drive signal (drive current) to the optical pickup device 23 in response to the focus control signal, and the tracking actuator drive signal (drive current) in response to the tracking control signal. Output to the device 23. Thereby, tracking control and focus control are performed.

  The SA controller 27 d generates a lens interval control signal for controlling the interval between both lenses constituting the beam expander 56 based on the layer parameter signal from the CPU 40. The lens interval control signal generated here is output to the SA driver 27e.

  The SA driver 27e outputs a drive signal (current signal or voltage signal) corresponding to the lens interval control signal to the optical pickup device 23 as a drive signal for the lens drive device that constitutes the beam expander 56.

  The motor control circuit 26 drives and controls the spindle motor 22 and the seek motor 21 based on instructions from the CPU 40.

  The buffer RAM 34 temporarily stores data to be recorded on the optical disc 15 (recording data), data reproduced from the optical disc 15 (reproduction data), and the like. Data input / output to / from the buffer RAM 34 is managed by the buffer manager 37.

  The encoder 25 takes out the recording data stored in the buffer RAM 34 through the buffer manager 37 based on an instruction from the CPU 40, modulates the data, adds an error correction code, etc., and writes a signal to the optical disc 15. Is generated. The write signal generated here is output to the laser control circuit 24.

  The laser control circuit 24 controls the power of laser light emitted from the light source LD. For example, at the time of recording, a drive signal for the light source LD is generated by the laser control circuit 24 based on the write signal, recording conditions, light emission characteristics of the light source LD, and the like. Part of the laser light emitted from the light source LD is received by a monitoring light receiving element (not shown), and a photoelectric conversion signal (hereinafter also referred to as “monitor signal”) corresponding to the amount of received light is a laser control circuit. 24 is input. The laser control circuit 24 corrects the drive signal for the light source LD based on the monitor signal.

  The interface 38 is a bidirectional communication interface with a host (for example, a personal computer) and conforms to standard interfaces such as ATAPI (AT Attachment Packet Interface), USB (Universal Serial Bus), and SCSI (Small Computer System Interface). ing.

  The flash memory 39 stores various programs including a program according to the present invention described by codes readable by the CPU 40, layer parameter information, recording conditions, light emission characteristics of the light source LD, and the like.

  The CPU 40 controls the operation of each unit according to a program stored in the flash memory 39 and saves data necessary for control in the RAM 41.

  Whether the selected recording layer is L0, L1, or L2 is determined by the CPU 40 based on the designated address. Therefore, when there is a recording request or a reproduction request from the host, the CPU 40 notifies the SA controller 27d and the ACT controller 27a of information related to the target recording layer.

<Recording process>
Next, the operation of the optical disk device 20 when a recording request is made from the host to the optical disk device 20 configured as described above will be described with reference to FIG. The flowchart in FIG. 6 corresponds to a series of processing algorithms executed by the CPU 40. When the recording request command is received from the host, the start address of the program corresponding to the flowchart of FIG. 6 (hereinafter referred to as “recording processing program”) stored in the flash memory 39 is set in the program counter of the CPU 40, and the recording process is executed. Start.

  In the first step 401, the motor control circuit 26 is instructed to rotate the optical disc 15 at a predetermined linear velocity (or angular velocity), and the reproduction signal processing circuit 28 is notified that a recording request command has been received from the host.

  In the next step 403, the designated address is extracted from the recording request command, and it is specified from the designated address whether the target recording layer is the recording layer L0, L1, or L2.

  In the next step 405, it is determined whether or not a focus jump is necessary. If a focus jump is necessary, the determination here is affirmed and the routine proceeds to step 407.

  In this step 407, a layer parameter setting process for setting a layer parameter in accordance with the target recording layer is performed. Details of the layer parameter setting process will be described later.

  In this step 409, the physical pit formed in the target recording layer is reproduced.

  In the next step 413, it is determined whether or not a reproduction error has occurred. If it is a reproduction error, the determination here is affirmed and the routine proceeds to step 415. Here, as an example, if the signal level of the RF signal is equal to or lower than a preset level, it is determined that a reproduction error has occurred.

  In this step 415, the host is notified that recording is impossible.

  In the next step 417, the fact that the target recording layer is a defective recording layer is recorded in the management information area of the target recording layer. Then, the recording process ends.

  On the other hand, if it is determined in step 413 that there is no reproduction error, the determination here is denied, and the routine proceeds to step 419.

  In step 419, user data recording processing is performed. Details of the user data recording process will be described later. Then, the recording process ends.

  If no focus jump is necessary in step 405, the determination here is denied and the routine proceeds to step 409.

《Layer parameter setting processing》
Next, the layer parameter setting process will be described with reference to the flowchart of FIG. The flowchart in FIG. 7 corresponds to a series of processing algorithms executed by the CPU 40.

  In the first step 501, a focus jump to the target recording layer is instructed.

  In the next step 503, it is determined whether or not layer parameters for the target recording layer are stored in the flash memory 39. If the layer parameter for the target recording layer is not stored in the flash memory 39, the determination here is denied and the process proceeds to step 505.

  In step 505, default layer parameters are set. Then, a layer parameter signal corresponding to the set layer parameter is output to the SA controller. Thereby, the lens interval in the beam expander 56 becomes an interval according to the layer parameter.

  In the next step 507, a seek to the physical pit position of the target recording layer is instructed.

  In the next step 509, the physical pit is reproduced.

  In the next step 511, the RF amplitude is acquired via the β detection circuit 28f.

  In the next step 513, it is determined whether or not the amplitude of the RF signal is almost the maximum value. If the amplitude of the RF signal is not substantially the maximum value, the determination here is denied and the routine proceeds to step 515.

  In this step 515, a preset increment Δp is added to the layer parameter, and a new layer parameter is set. Then, a layer parameter signal corresponding to the set layer parameter is output to the SA controller. Thereby, the lens interval in the beam expander 56 is slightly changed. Then, the process returns to step 509.

  If the amplitude of the RF signal is approximately the maximum value in step 513, the determination here is affirmed and the routine proceeds to step 517.

  In this step 517, the currently set layer parameter is stored in the flash memory 39 as the layer parameter for the target recording layer. Then, the layer parameter setting process ends.

  On the other hand, if the layer parameter corresponding to the target recording layer is stored in the flash memory 39 in step 503, the determination here is affirmed, and the routine proceeds to step 519.

  In step 519, layer parameters for the target recording layer are set. Then, a layer parameter signal corresponding to the set layer parameter is output to the SA controller. Then, the layer parameter setting process ends.

  That is, aberration correction is performed by this layer parameter setting process. Specifically, if the target recording layer is L0, the lens interval is set to 9.8 mm, if L1, the lens interval is set to 8.5 mm, and if L2, the lens interval is set to 6.8 mm.

<< User data recording process >>
Next, the user data recording process will be described with reference to the flowchart of FIG. The flowchart in FIG. 8 corresponds to a series of processing algorithms executed by the CPU 40.

  Here, as an example, as shown in FIG. 9, it is assumed that a replacement area is set in advance in the user data area of each recording layer.

  In the first step 601, user data is recorded in a designated area.

  In the next step 603, the area where the user data is recorded is reproduced.

  In the next step 605, it is determined whether or not a reproduction error has occurred. If it is a reproduction error, the determination here is affirmed and the routine proceeds to step 611. Here, as an example, if the signal level of the RF signal is equal to or lower than a preset level, it is determined that a reproduction error has occurred.

  In step 611, it is determined whether or not replacement is possible. If there is an unrecorded area in the replacement area in the target recording layer, the determination here is affirmed, and the routine proceeds to step 613.

  In the next step 613, user data is recorded in the replacement area.

  In step 617, the area where the user data is recorded is a defect area, and the replacement area is recorded in the management information area of the target recording layer.

  In the next step 651, it is determined whether or not user data recording is completed. If it has not been completed, the determination here is denied and the processing returns to step 601.

  On the other hand, if the user data recording is completed in step 651, the determination here is affirmed and the user data recording process is terminated.

  In step 611, if there is no unrecorded area in the replacement area in the target recording layer, the determination here is denied and the routine proceeds to step 661.

  In step 661, the host is notified that recording is not possible.

  In the next step 663, prohibition of writing to the target recording layer is recorded in the management information area of the target recording layer. Then, the user data recording process ends.

  If it is determined in step 605 that there is no reproduction error, the determination here is denied and the process proceeds to step 651.

  As is clear from the above description, in the optical disc device 20 according to the present embodiment, a control device and a processing device are realized by the CPU 40 and a program executed by the CPU 40. Note that at least a part of the control device and the setting device realized by processing according to the program by the CPU 40 may be configured by hardware, or all may be configured by hardware.

  In the present embodiment, the program according to the present invention is executed by the programs corresponding to FIGS. 6 to 8 among the programs recorded in the flash memory 39 as the recording medium.

  In the recording process, the recording method according to the present invention is implemented.

  As described above, according to the optical disc apparatus 20 according to the present embodiment, when user data is recorded on the optical disc 15, it is determined whether or not the physical pit formed in the target recording layer has been reproduced and correctly reproduced. Is done. As a result of the determination, when the physical pit is correctly reproduced, the user data is recorded on the target recording layer. That is, user data is recorded after confirming that the target recording layer is not a defective recording layer. Therefore, it is possible to record on the optical disc 15 with stable recording quality.

  According to the present embodiment, since the aberration of the optical system in the optical pickup device 23 is corrected according to the target recording layer, an appropriate light spot can be formed on the target recording layer.

  Further, according to the present embodiment, when the user data recorded on the target recording layer is reproduced and the user data is not reproduced correctly, it is determined that the area where the user data is recorded is a defective area. Since it is recorded in the management information area, user data can be prevented from being recorded in that area thereafter.

  In addition, according to the present embodiment, when the physical pit is not correctly reproduced, the fact that the target recording layer is a defective recording layer is recorded in the management information area of the target recording layer. It is possible to prevent user data from being recorded.

  In addition, according to the optical disc 15 according to the present embodiment, since the physical pits are formed in each recording layer, the information recording apparatus on which the optical disc 15 is set reproduces the physical pits, The state can be determined. Therefore, recording with stable recording quality is possible.

  In the above embodiment, the case where the replacement area is provided in each recording layer has been described, but the present invention is not limited to this.

<< Variation 1 of User Data Recording Process >>
Modification 1 of the user data recording process will be described with reference to the flowchart of FIG. Here, the description will focus on the differences from the user data recording process in the above embodiment, and the same reference numerals are used for the steps for performing the same or equivalent process as the user data recording process in the above embodiment. The description will be simplified or omitted.

  In the first step 601, user data is recorded in a designated area.

  In the next step 603, the area where the user data is recorded is reproduced.

  In the next step 605, it is determined whether or not a reproduction error has occurred. If it is a reproduction error, the determination here is affirmed and the routine proceeds to step 607.

  In this step 606, it is determined whether or not a replacement recording layer has already been designated. If not specified, the determination here is denied, and the routine goes to Step 607.

  In this step 607, one of the recording layers excluding the target recording layer in the optical disc 15 is designated as a replacement recording layer (see FIG. 11). Here, the recording layer closest to the target recording layer is designated from among the recording layers that can be the recording layer for replacement.

  In the next step 608, as an example, the fact that the designated recording layer is a recording layer for replacement is recorded in the management information area of the recording layer that is first accessed when the optical disc 15 is set.

  In the next step 609, the focus jump is made to the recording layer for replacement.

  In the next step 611, it is determined whether or not replacement is possible. If there is no unrecorded area in the recording layer for replacement, the determination here is denied and the routine proceeds to step 621.

  In this step 621, it is determined whether or not there is an unrecorded area on the optical disc 15. If there is an unrecorded area, the determination here is affirmed and the routine proceeds to step 623.

  In this step 623, a replacement recording layer is newly designated.

  In the next step 625, as an example, the fact that the designated recording layer is a replacement recording layer is recorded in the management information area of the recording layer that is first accessed when the optical disc 15 is set.

  In the next step 627, the focus jump is made to a new recording layer for replacement.

  In the next step 613, user data is recorded in the replacement area.

  In the next step 617, the focus jump is made to the target recording layer, the area where the user data is recorded is a defect area, and the replacement area is recorded in the management information area of the target recording layer.

  In the next step 651, it is determined whether or not user data recording is completed. If it has not been completed, the determination here is denied and the processing returns to step 601.

  On the other hand, if the user data recording is completed in step 651, the determination here is affirmed, and the first modification of the user data recording process is terminated.

  If there is no unrecorded area on the optical disk 15 in step 621, the determination here is denied and the routine proceeds to step 661.

  In step 661, the host is notified that recording is not possible.

  In the next step 665, for example, prohibiting writing to the optical disc 15 is recorded in the management information area of the recording layer accessed first when the optical disc 15 is set. And the modification 1 of a user data recording process is complete | finished.

  If there is an unrecorded area in the replacement recording layer in step 611, the determination here is affirmed, and the routine proceeds to step 613.

  If the alternate recording layer has already been specified in step 606, the determination here is affirmed, and the routine proceeds to step 609.

  If it is determined in step 605 that there is no reproduction error, the determination here is denied and the process proceeds to step 651.

  As described above, in the first modification of the user data recording process, when the user data is not reproduced correctly, one of the recording layers other than the target recording layer in the optical disc 15 is replaced with a replacement recording layer. And the fact that the designated recording layer is a recording layer for replacement is recorded on the optical disc. As a result, the replacement process can be performed smoothly. In addition, when specifying the recording layer for replacement, the recording layer closest to the target recording layer is specified among the recording layers that can be the recording layer for replacement, so that replacement processing can be performed more quickly. It becomes.

  When there is no unrecorded area in the replacement recording layer, a replacement recording layer is newly specified, and the newly specified recording layer is recorded on the optical disk as a replacement recording layer. . Thereby, it becomes possible to record user data efficiently.

<< Modification 2 of User Data Recording Process >>
Modification 2 of the user data recording process will be described with reference to the flowchart of FIG. Here, the description will focus on the differences from the user data recording process in the above embodiment, and the same reference numerals are used for the steps for performing the same or equivalent process as the user data recording process in the above embodiment. The description will be simplified or omitted.

  In the first step 601, user data is recorded in a designated area.

  In the next step 603, the area where the user data is recorded is reproduced.

  In the next step 605, it is determined whether or not a reproduction error has occurred. If it is a reproduction error, the determination here is affirmed and the routine proceeds to step 631.

  In step 631, it is determined whether there is a recording layer above the target recording layer. If there is a recording layer on the upper side, the determination here is affirmed and the routine proceeds to step 633.

  In step 633, the focus jump is made to the recording layer immediately above the target recording layer.

  In the next step 635, it is determined whether or not it is unrecorded. If it has not been recorded, the determination here is affirmed and the routine proceeds to step 613.

  In the next step 613, user data is recorded in the replacement area. Here, after recording, an example is shown in FIG.

  In the next step 617, the focus jump is made to the target recording layer, the area where the user data is recorded is a defect area, and the replacement area is recorded in the management information area of the target recording layer.

  In the next step 651, it is determined whether or not user data recording is completed. If it has not been completed, the determination here is denied and the processing returns to step 601.

  On the other hand, if the recording of the user data is completed in step 651, the determination here is affirmed, and the modification 2 of the user data recording process is ended.

  It should be noted that if it is not unrecorded in step 635, the determination here is denied, and the routine proceeds to step 637.

  In this step 637, it is determined whether or not there is a recording layer below the target recording layer. If there is a recording layer on the lower side, the determination here is affirmed, and the routine goes to Step 639.

  In step 639, the focus jump is made to the recording layer immediately below the target recording layer.

  In the next step 641, it is determined whether or not there is an unrecorded portion. If it has not been recorded, the determination here is affirmed and the routine proceeds to step 613. In this case, after recording, an example is shown in FIG. 13B.

  On the other hand, if it is not unrecorded in this step 641, the judgment here is denied and it transfers to step 643.

  In step 643, the unrecorded area of the recording layer closest to the target recording layer is searched for from the unrecorded areas at the same radial position as the defective area.

  In the next step 645, it is determined whether or not there is an unrecorded area. If an unrecorded area is found, the determination here is affirmed and the routine proceeds to step 647.

  In step 647, the focus jump is made to the recording layer to which the unrecorded area belongs. Then, the process proceeds to step 613. In this case, after recording, as shown in FIG. 13C as an example.

  If there is no unrecorded area in step 645, the determination here is denied and the routine proceeds to step 661.

  In step 661, the host is notified that recording is not possible.

  In the next step 665, prohibiting writing to the optical disk 15 is recorded on the optical disk 15. And the modification 2 of a user data recording process is complete | finished.

  If it is determined in step 637 that there is no recording layer below the target recording layer, the determination here is denied and the process proceeds to step 643.

  If there is no recording layer above the target recording layer in step 631, the determination here is denied and the routine proceeds to step 637.

  If it is determined in step 605 that there is no reproduction error, the determination here is denied and the process proceeds to step 651.

  As described above, in the second modification of the user data recording process, when user data is not reproduced correctly, the recording closest to the target recording layer among the unrecorded areas at the same radial position as the defective area on the optical disk is performed. Since the unrecorded area of the layer is used as a replacement area, the aberration can be within the allowable range without changing the layer parameter at the time of focus jump (see FIG. 14). That is, since it is not necessary to drive the lens driving device 56c, the replacement process can be performed quickly.

  As an example, as shown in FIG. 15, when an optical disc having 25 recording layers is set in the optical disc apparatus 20, the aberration is within an allowable range in five consecutive recording layers without changing the layer parameter. Is possible.

<< Modification 3 of User Data Recording Process >>
If the user data does not need to be recorded in the spare area, as shown in the flowchart of FIG. 16, if it is not reproduced correctly in step 605, the process may move to step 661.

  In the above-described embodiment, the case where the physical pits are formed at two locations of the inner peripheral portion and the outer peripheral portion of the disk has been described. However, the present invention is not limited to this, for example, only the inner peripheral portion. It may be formed.

  In the above-described embodiment, the case where the management information areas are provided at the two locations of the inner peripheral portion and the outer peripheral portion of the disk has been described. However, for example, it may be provided only at the inner peripheral portion.

  In the layer parameter setting process of the above embodiment, the case where the RF amplitude is acquired in step 511 has been described. However, the present invention is not limited to this, and for example, jitter may be obtained. In this case, in step 513, it is determined whether or not the jitter is substantially the minimum value. If the jitter is not the substantially minimum value, the process proceeds to step 515.

  In the above embodiment, whether or not a reproduction error has occurred is determined based on the signal level of the RF signal. However, the present invention is not limited to this. For example, a jitter or a block error rate may be used. That is, if the jitter is equal to or greater than a preset value, it may be determined that a reproduction error has occurred. Further, if the block error rate is equal to or higher than a preset value, it may be determined as a reproduction error. Furthermore, a reproduction error may be determined when a correct address cannot be acquired.

  In the above-described embodiment, the case where the optical disk corresponds to laser light having a wavelength of about 780 nm has been described. However, the present invention is not limited to this, and for example, the optical disk corresponding to laser light having a wavelength of about 660 nm An optical disk corresponding to a laser beam of about 405 nm may be used.

  In the above embodiment, the optical disc apparatus capable of recording and reproducing information has been described. However, the present invention is not limited to this, and any optical disc apparatus capable of recording at least information among recording, reproducing and erasing of information may be used. .

  Moreover, although the said embodiment demonstrated the case where an optical disk has three recording layers, it may have not only this but four or more recording layers.

  In the above embodiment, the case where the optical pickup device includes one semiconductor laser has been described. However, the present invention is not limited thereto, and for example, a plurality of semiconductor lasers that emit light beams having different wavelengths may be included. In this case, for example, at least one of a semiconductor laser that emits a light beam with a wavelength of about 405 nm, a semiconductor laser that emits a light beam with a wavelength of about 660 nm, and a semiconductor laser that emits a light beam with a wavelength of about 780 nm may be included. . That is, the optical disk apparatus may be an optical disk apparatus that supports a plurality of types of optical disks that conform to different standards. In this case, at least one optical disk may be an optical disk having three or more recording layers.

  In the above embodiment, the case where the information recording apparatus is an optical disk apparatus has been described. However, the present invention is not limited to this. For example, when the optical disk corresponds to the DVD standard, it may be a DVD recorder.

  As described above, the optical disc of the present invention has three or more recording layers and is suitable for recording with stable recording quality. Further, the recording method of the present invention is suitable for recording with stable recording quality on the optical disk of the present invention. Further, the information recording apparatus of the present invention is suitable for recording with stable recording quality on the optical disk of the present invention. The program and storage medium of the present invention are suitable for causing an information recording apparatus to record a stable recording quality on the optical disk of the present invention.

It is a block diagram which shows the structure of the optical disk apparatus as an information recording device concerning one Embodiment of this invention. It is a figure for demonstrating the optical disk in FIG. It is a figure for demonstrating the management information area | region in FIG. It is a figure for demonstrating the optical pick-up apparatus in FIG. It is a figure for demonstrating the beam expander in FIG. 3 is a flowchart for explaining a recording process in the optical disc apparatus of FIG. 1. It is a flowchart for demonstrating the detail of the layer parameter setting process in FIG. It is a flowchart for demonstrating the detail of the user data recording process in FIG. It is a figure for demonstrating FIG. It is a flowchart for demonstrating the modification 1 of the user data recording process of FIG. It is a figure for demonstrating FIG. It is a flowchart for demonstrating the modification 2 of the user data recording process of FIG. FIG. 13A to FIG. 13C are diagrams for explaining FIG. It is a figure for demonstrating the aberration of the optical disk in FIG. It is a figure for demonstrating the aberration in the optical disk which has 25 recording layers. It is a flowchart for demonstrating the modification 3 of the user data recording process of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 15 ... Optical disk, 20 ... Optical disk apparatus (information recording device), 23 ... Optical pick-up apparatus, 39 ... Flash memory (recording medium), 40 ... CPU (control apparatus, processing apparatus).

Claims (13)

There are three or more recording layers capable of recording information, and spiral or concentric tracks are formed on each of the recording layers, and at least one of a preset pattern and content information in each recording layer is a physical pit. A recording method for recording information on an optical disk formed as an information recording device using
Reproducing physical pits formed in a target recording layer which is a recording layer on which the information is recorded on the optical disc;
Determining whether the physical pit has been correctly reproduced;
Recording the information on the target recording layer when the physical pit is correctly reproduced as a result of the determination;
Reproducing the information recorded in the target recording layer;
Determining whether the information has been correctly reproduced;
As a result of the determination, when the information is not reproduced correctly, the information recording area is recorded as a defective area on the optical disc, and the recording layer excluding the target recording layer in the optical disc Designating one recording layer as a replacement recording layer;
Recording on the optical disc that the designated recording layer is a replacement recording layer . 2. The recording method according to claim 1 , wherein, in the specifying step, a recording layer closest to the target recording layer is specified from among the recording layers that can serve as a replacement recording layer. A step of newly designating a replacement recording layer when there is no unrecorded area in the designated recording layer;
The recording method according to claim 1 or 2, further comprising a; the newly designated recording layer step and to be recorded on the optical disk that is a recording layer for replacement. There are three or more recording layers capable of recording information, and spiral or concentric tracks are formed on each of the recording layers, and at least one of a preset pattern and content information in each recording layer is a physical pit. A recording method for recording information on an optical disk formed as an information recording device using
Reproducing physical pits formed in a target recording layer which is a recording layer on which the information is recorded on the optical disc;
Determining whether the physical pit has been correctly reproduced;
Recording the information on the target recording layer when the physical pit is correctly reproduced as a result of the determination;
A step of recording on the optical disc that the target recording layer is a defective recording layer when the physical pit is not correctly reproduced as a result of the determination . Prior to the step of reproducing the physical pits, any one of claim 1 to 4, further comprising a step of correcting the aberrations of the optical system constituting the information recording apparatus in accordance with the target recording layer The recording method described in 1. There are three or more recording layers capable of recording information, and spiral or concentric tracks are formed on each of the recording layers, and at least one of a preset pattern and content information in each recording layer is a physical pit. An information recording apparatus capable of recording information on an optical disc formed as
An optical pickup device;
A control device for correcting aberrations of an optical system constituting the optical pickup device according to a target recording layer on which the information is recorded on the optical disc;
When the physical pits formed on the target recording layer are reproduced and the physical pits are correctly reproduced, the information is recorded on the target recording layer via the optical pickup device and then recorded on the target recording layer. When the recorded information is reproduced, and when the information is not reproduced correctly, the information recording area is recorded as a defective area on the optical disc, and the recording layer excluding the target recording layer on the optical disc An information recording apparatus comprising: a processing apparatus that designates one of the recording layers as a replacement recording layer and records on the optical disc that the designated recording layer is a replacement recording layer . 7. The information recording apparatus according to claim 6 , wherein the processing apparatus designates a recording layer that is closest to the target recording layer among recording layers that can be alternate recording layers in the designation. When there is no unrecorded area in the designated recording layer, the processing device newly designates a replacement recording layer, and indicates that the newly designated recording layer is a replacement recording layer. The information recording apparatus according to claim 6 , wherein the information recording apparatus records on an optical disc. There are three or more recording layers capable of recording information, and spiral or concentric tracks are formed on each of the recording layers, and at least one of a preset pattern and content information in each recording layer is a physical pit. An information recording apparatus capable of recording information on an optical disc formed as
An optical pickup device;
A control device for correcting aberrations of an optical system constituting the optical pickup device according to a target recording layer on which the information is recorded on the optical disc;
The physical pits play formed in the target recording layer, when the physical pits is reproduced correctly, through the optical pick-up apparatus to record the information to the target recording layer, the physical pits correctly And a processing device for recording on the optical disc that the target recording layer is a defective recording layer when the target recording layer is not reproduced . There are three or more recording layers capable of recording information, and spiral or concentric tracks are formed on each of the recording layers, and at least one of a preset pattern and content information in each recording layer is a physical pit. A program used in an information recording apparatus capable of recording information on an optical disc formed as
A procedure for reproducing physical pits formed in a target recording layer which is a recording layer on which the information is recorded on the optical disc;
A procedure for determining whether the physical pit has been correctly reproduced;
A procedure for recording the information on the target recording layer when the physical pit is correctly reproduced as a result of the determination;
Reproducing information recorded on the target recording layer;
A procedure for determining whether the information has been correctly reproduced;
As a result of the determination, when the information is not reproduced correctly, the information recording area is recorded as a defective area on the optical disc, and the recording layer excluding the target recording layer in the optical disc A procedure for designating one recording layer as a replacement recording layer;
A program for causing the control computer of the information recording apparatus to execute a procedure for recording on the optical disc that the designated recording layer is a recording layer for replacement . There are three or more recording layers capable of recording information, and spiral or concentric tracks are formed on each of the recording layers, and at least one of a preset pattern and content information in each recording layer is a physical pit. A program used in an information recording apparatus capable of recording information on an optical disc formed as
A procedure for reproducing physical pits formed in a target recording layer which is a recording layer on which the information is recorded on the optical disc;
A procedure for determining whether the physical pit has been correctly reproduced;
A procedure for recording the information on the target recording layer when the physical pit is correctly reproduced as a result of the determination;
As a result of the determination, if the physical pit is not correctly reproduced, a program for causing the control computer of the information recording apparatus to execute a procedure for recording on the optical disc that the target recording layer is a defective recording layer. . The control computer further causes the control computer to execute a procedure of correcting aberrations of an optical system constituting the information recording device according to the target recording layer prior to the procedure of reproducing the physical pit. The program according to 10 or 11 . The computer-readable recording medium with which the program as described in any one of Claims 10-12 was recorded.

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