JP2006216145A - Optical disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem, wherein, for example, it becomes impossible to know whether information has been recorded in an area shown by a specific address where the address information held by an optical disk becomes no longer readable correctly, in the case where address information has not been recorded correctly at the recording of address information on the optical disk or when the address information has been destroyed. <P>SOLUTION: An optical disk device has a function of holding the presence or the absence of information recording by each area of a prescribed interval of the optical disk, and address information or information of purport that address information cannot be acquired, when the address information cannot be acquired, while associating them mutually. Since information to be held is information for each area of the prescribed interval, even if address information with which the presence or the absence of information recording is desired to be known is not held, whether the information has been recorded in an area of the specified address by pieces of address information, before and after which can be read out, can be known. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention associates address information and the like for each predetermined interval area of an optical disc with the presence or absence of information recording as unrecorded information, and retains whether or not information is recorded in an area indicated by a specific address. The present invention relates to an optical disc apparatus having a function of judging based on recorded unrecorded information.

In recent years, recordable optical discs represented by CD-R, CD-RW, DVD-R, DVD-RW and the like have been widely generalized in addition to read-only optical discs represented by CD-ROM and DVD-ROM. Yes. FIG. 16 illustrates a configuration of a general optical disk device. The laser light output from the optical pickup (1610) through the actuator (1620) is reflected by the optical disc (1630), returns to the optical pickup (1610), and is captured by the optical detector in the optical pickup. The signal captured by the photodetector is sent to the signal processing mechanism (1640). In the signal processing mechanism (1640), a control signal (focus signal) for controlling the position of the optical pickup (1610) or tracking control so that the laser beam from the optical pickup (1610) strikes the optical disc (1630) appropriately. Servo error signals, track servo error signals, etc.) are generated. The control signal generated in the signal processing mechanism (1640) is output to the servo control circuit (1650) and further output to the actuator (1620). By the way, normally, when data is recorded on the optical disk by the mechanism as shown in FIG. 16, there are two types of addresses recorded on the optical disk. One is an address obtained from the recorded signal, and the other is an address physically engraved on the optical disk. With respect to the former, there is a possibility that data cannot be recorded correctly when data is recorded on the optical disc or cannot be read if the recording state is poor. As for the latter, there is a possibility that the address data will be destroyed and become unreadable when the recording laser beam strikes the optical disk transversely when recording data. When the address cannot be read in this manner, there arises a problem that, for example, it becomes impossible to determine whether information is recorded in a specific address area. In order to solve such a problem, in Patent Document 1, the optical disc apparatus has the second recording area for each optical disc having address information given to each first recording area set in the track. Data is recorded and reproduced, and the second recording area is composed of a plurality of first recording areas. In such an optical disc apparatus, the corresponding second recording area is obtained by comparing the number of address information identified as normal or not normal among the address information provided for each first recording area with a predetermined threshold value. Has been proposed to identify whether or not is normal
JP 2004-281022 A

  However, the invention of Patent Document 1 does not directly check whether or not data is recorded in the second recording area, and whether or not the number of normal or abnormal address information is greater than or equal to a certain value. Depending on what, the possibility of normal or abnormal is estimated. In such a mechanism, for example, it is impossible to know whether or not information is recorded in a specific address area.

  In the present invention, in order to solve this problem, there is provided a function for acquiring address information on a disc and information on whether or not information is recorded in an area indicated by each address for each predetermined interval area and holding it in association with each other. An optical disc device having the above is proposed. FIG. 1 illustrates an outline of the main configuration of an optical disc apparatus according to the present invention. The optical disc apparatus of the present invention includes a determination unit (0160), an address information acquisition try unit (0170), and a holding unit (0180) in addition to the functions of the conventional optical disc device. The determination unit (0160) determines the presence or absence of information recording for each predetermined interval area of the optical disk, and the address information acquisition trie unit (0170) tries to acquire the address information for each area, thereby acquiring the address information or the address information. If it is not possible, it has a function of acquiring information indicating that it could not be acquired. The information acquired by the determination unit (0160) and the address information acquisition trie unit (0170) is associated and held in the holding unit (0180). Since the information held in the holding unit (0180) is information for each predetermined interval area, even if the address information for which information recording is desired is not held in the holding unit (0180), the information can be read before and after. From this address information, it is possible to know whether or not information is recorded in a specific address area.

  As described above, in the optical disk apparatus according to the present invention, when it is desired to determine whether or not information is recorded in the specific address area, the address information cannot be directly read due to damage of the address information. However, it is possible to know the presence or absence of information recording in the specific address area.

The best mode for carrying out the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to these embodiments, and can be implemented in various modes without departing from the spirit of the present invention. The relationship between the following embodiments and the claims is as follows. The first embodiment will mainly describe claims 1, 2, 6 and the like. In the second embodiment, claims 3 and 7 will be mainly described. The third embodiment will mainly describe claim 4 and the like. The fourth embodiment will mainly describe claim 5 and the like.
(Embodiment 1)

  (Embodiment 1: Overview) In this embodiment, whether or not information is recorded for each predetermined interval area of the optical disc is determined, and address information and information recording for each area are recorded by trying to acquire address information for each area. The present invention relates to an optical disc apparatus having a function of holding presence / absence.

  (Embodiment 1: Configuration) FIG. 2 illustrates functional blocks of an optical disc apparatus according to this embodiment. The optical disc apparatus (0200) includes a “determination unit” (0210), an “address information acquisition trie unit” (0220), and a “holding unit” (0230). The optical disk device (0200) is assumed to be an optical disk device that performs reproduction, recording, erasure, etc. on a recordable optical disk such as a CD-R, CD-RW, DVD-R, and DVD-RW. The optical disk device according to the present embodiment can also be used for an optical disk device that reproduces a read-only optical disk such as a CD-ROM or a DVD-ROM.

  The “determination unit” (0210) has a function of determining whether information is recorded for each predetermined interval area of the optical disc. The determined result is acquired as a recording presence / absence determination result in a “holding unit” (0230) described later. “Predetermined spacing region” means a region located at a predetermined spacing on the optical disc. The “predetermined interval” only needs to be able to represent the interval between regions as a function. For example, when an optical disk is read at regular intervals, the interval for each read area is CLV (Constant Linear Velocity) or ZCLV (Zoneed CLV), which is a rotation method in which the linear velocity of the disk is constant. It becomes constant. In the case of the CAV method (Constant Angular Velocity) or ZCAV method (Zoned CAV), which is a rotation method in which the rotation speed is constant, the interval for each read area can be represented by a function using the rotation speed. Further, the determination unit (0210) may directly read the optical disc at predetermined intervals, or may receive information read by other processing mechanisms at predetermined intervals. Further, information read continuously by other processing mechanisms may be acquired at predetermined intervals. That is, the determination unit (0210) directly or indirectly reads the optical disc at predetermined intervals, and determines whether data is recorded in the read area. "Every predetermined interval" assumes a shorter length than reading one sector. DVD-ROM is a CLV system, and it takes about 1.6 milliseconds to read one sector, so when converted to time, it rotates at about 1 millisecond and 8 times faster when rotating at 1 time. Is assumed to be approximately 0.125 milliseconds. As a specific example of the determination unit (0210), an optical pickup (1620) of a general optical disc apparatus as shown in FIG. 16 continuously reads an optical disc, and acquires information read by the optical pickup (1620) at predetermined intervals. Such a case is assumed.

  The “address information acquisition trie” (0220) has a function of trying to acquire address information for each area from the optical disc. The “region” refers to a “predetermined region” described in the description of the determination unit (0210). Like the determination unit (0210), the optical disk may be directly read at predetermined intervals, or other processing mechanisms may receive information read at predetermined intervals to check whether the address information has been read. It may be. Further, information read continuously by other processing mechanisms may be acquired at predetermined intervals. That is, the address information acquisition trie unit (0220) reads the optical disc at predetermined intervals directly or indirectly and tries to acquire address information from the read area. However, the read timing needs to be synchronized with the read timing by the determination unit. The attempted result is the acquired address information when the address information can be acquired, and may be information indicating that when the address information cannot be acquired. As a specific example of the address information acquisition trie unit (0220), an optical pickup (1620) of a general optical disc apparatus as shown in FIG. 16 reads an optical disc continuously, and the information read by the optical pickup (1620) is read at a predetermined interval. The case where it acquires every time is assumed.

  The “holding unit” (0230) holds unrecorded information that is information associating the recording presence / absence determination result in the determination unit (0210) with the result attempted in the address information acquisition trie unit (0220). It has a function. The holding unit (0230) may be configured to hold the non-recorded information only temporarily or may be configured to hold the non-recorded information permanently. “Temporary” means a case where the optical disk device (0200) is only inserted while the optical disk is inserted. “Permanent” means, for example, a case where unrecorded information of an old optical disk is held for a certain period even if the optical disk used in the optical disk device (0200) is changed. In such a case, it is only necessary to store the unrecorded information for each optical disc in association with the identification ID (media ID or the like) possessed by the optical disc. As specific examples, a semiconductor memory, a magnetic recording device, and the like are assumed.

  FIG. 3 is an example of recorded / unrecorded information held by the holding unit (0230). Here, the memory number is a number for managing a data recording position in the holding unit (0230). The address is an address on the optical disc and is a result of an attempt by the address information acquisition try unit (0220). That is, when the address information can be read, the address information is indicated. When the address information cannot be acquired, it is indicated by “X” in the present example. The presence / absence of recording is a result of recording presence / absence judgment in the judgment unit (0210), and indicates whether information is recorded at each address. In this example, “◯” is indicated when information is recorded, and “X” is indicated when information is not recorded. For example, according to the unrecorded information in (a), it can be seen that the addresses that could be read were the addresses 50,000, 50080, and 50140. It can also be seen that no information is recorded in the area of address 50140 on the optical disc, and information is recorded in the other address areas.

  (Embodiment 1: Process Flow) FIG. 4 is a flowchart illustrating a process flow in the optical disc apparatus according to the present embodiment. First, the optical pickup is moved to a predetermined interval region (optical pickup moving step S0410). Next, in the optical pickup moving step (S0410), it is determined whether information is recorded in the area where the optical pickup is moved. This process is executed by the determination unit (0210) (determination step S0420). Next, acquisition of address information is attempted for the area where the optical pickup has been moved in the optical pickup moving step (S0410). This process is executed by the address information acquisition try unit (0220) (address information acquisition try step S0430). Next, the recording presence / absence determination result, which is the determination result in the determination step (S0420), and the result attempted in the address information acquisition try step (S0430) are associated and held as unrecorded information. This process is executed by the holding unit (0230) (holding step S0440). The processing from the optical pickup moving step (S0410) to the holding step (S0440) is repeated until reading is completed (S0450). Further, the order of processing in the determination step (S0420) and the address information acquisition try step (S0430) may be reversed.

(Embodiment 1: Effect) According to the optical disk apparatus of this embodiment, the address information for each predetermined interval area of the optical disk and the presence / absence of information recording can be held in association with each other. Thus, for example, when it is necessary to check whether or not information is recorded in a specific address area on the optical disk, it is possible to check the recording state from the stored information without directly checking the optical disk. is there.
(Embodiment 2)

  (Embodiment 2: Overview) This embodiment relates to an optical disk apparatus having a function of inquiring whether information is recorded in an area indicated by address information in addition to the function of the optical disk apparatus of Embodiment 1. The optical disc apparatus according to the present embodiment determines whether address information is included in the recorded unrecorded information. If not included, the address information is estimated from the recorded unrecorded information. If included, the address information is included. Based on the above, it has a function of acquiring the recording presence / absence determination result of the area indicated by the address information.

  (Embodiment 2: Configuration) FIG. 5 illustrates functional blocks of an optical disc apparatus according to this embodiment. The optical disc apparatus (0500) includes a “determination unit” (0510), an “address information acquisition trie unit” (0520), a “holding unit” (0530), an “inquiry information acquisition unit” (0540), It consists of an “address determination unit” (0550), an “estimation unit” (0560), an “estimation result acquisition unit” (0570), and a “confirmation result acquisition unit” (0580). The configuration other than the inquiry information acquisition unit (0540), the address determination unit (0550), the estimation unit (0560), the estimation result acquisition unit (0570), and the confirmation result acquisition unit (0580) is described in the first embodiment. Since the configuration is the same as that of the optical disc apparatus, the description thereof is omitted here.

  The “inquiry information acquisition unit” (0540) has a function of acquiring inquiry information for inquiring whether information is recorded in the area indicated by the address information based on the address information. “Acquisition” may be acquisition from the inside or may be acquisition from the outside. It also includes the case where it generates itself. The inquiry information includes at least address information of an area to be inquired about whether information is recorded.

  The “address determination unit” (0550) has a function of determining whether the address information indicated by the inquiry information is included in the unrecorded information. For example, if the recorded / unrecorded information has the contents as shown in FIG. 3A, it is determined that the address information indicated by the inquiry information is included if the address is 50,000, 50080, or 50140. . If the address information indicated by the inquiry information is other address information, it is determined that it is not included.

  If the “estimation unit” (0560) is a determination result that the determination result of the address determination unit (0550) is not included, the recording / non-recording determination of the area indicated by the address information included in the inquiry information is performed. It has a function of estimating the position in the holding unit (0530) where the result is held. The “position in the holding unit where the recording presence / absence determination result is held” means, for example, a memory number in the unrecorded information in FIG. In addition, as long as the result of determining whether or not each address information is recorded is identified by an identification number such as a serial ID, such an identification number may be used.

  FIG. 6 is a calculation formula for estimating the position in the holding unit (0530) in which the recording presence / absence determination result of the area indicated by the address information is held when the interval of the predetermined interval area is constant. . For example, if the recorded / unrecorded information has the contents as shown in FIG. 3B, if the address information indicated by the inquiry information is address 5080 (address C), the address determination unit ( 0550), it is determined that it is not included. In such a case, the memory number at address 5080 is estimated by the equation of FIG. That is, the memory number at address C = (50080-50000) / (50140-50000) × (10−3) + 3 = 7, and it is estimated that the memory number at address 50080 is 7. Further, for example, if the recorded / unrecorded information has the contents as shown in FIG. 3C, when the address information indicated by the inquiry information is address 50140, the formula of FIG. Thus, the memory number at address 50140 is estimated. That is, the memory number at the address 50140 = (50140-50000) / (50080-50000) × (7-3) + 3 = 10, and it is estimated that the memory number at the address 50080 is 10.

  The “estimation result acquisition unit” (0570) has a function of acquiring the recording presence / absence determination result from the position in the holding unit (0530) indicated by the estimation result of the estimation unit (0560). For example, as described above, when the recorded / unrecorded information has the contents as shown in FIG. 3B and the address information indicated by the inquiry information is at address 5080, the address 50080 is calculated according to the formula of FIG. It is estimated that the memory number of the address is 7. Therefore, it can be seen from FIG. 3B that the information recording is performed because the recording presence / absence judgment result (recording presence / absence) at address 50080 is “◯”.

  FIG. 7 illustrates a series of operations when the address information indicated by the inquiry information is not included in the unrecorded information held in the holding unit (0530). For example, it is assumed that the inquiry information including the address information “50080 address” is acquired by the inquiry information acquisition unit (0740). Next, the address determination unit (0750) determines whether the address information “50080 address” included in the inquiry information is included in the non-recorded information stored in the storage unit (0730). If the recorded / unrecorded information held in the holding unit (0730) has the contents shown in FIG. 3B, it is determined that “address 50080 is not included”. Next, the estimation unit (0760) estimates that the memory number is “7” by using an equation as shown in FIG. Next, the estimation result acquisition unit (0770) determines from the unrecorded information held in the holding unit (0730) that “there is information recording at address 5080” based on the estimation result.

  Note that in the description of specific examples and the like, description of components that are not necessary for the description may be omitted in the drawings. (The same applies throughout this specification.)

  If the determination result acquisition unit (0580) determines that the determination result of the address determination unit (0550) is included, the determination result acquisition unit (0580) is based on the address information included in the inquiry information. It has a function of acquiring a recording presence / absence determination result from the holding unit (0530). For example, if the recorded / unrecorded information has the contents as shown in FIG. 3 (a), if the address information included in the inquiry information is address 5,080 (address C), the address determination unit (0550) Is judged to be included. Further, from FIG. 3A, it can be seen that information is recorded because the recording presence / absence judgment result (presence / absence of recording) at address 50080 is “◯”.

  FIG. 8 illustrates a series of operations when the address information indicated by the inquiry information is included in the unrecorded information stored in the storage unit (0530). For example, it is assumed that the inquiry information including the address information “50000 address” is acquired by the inquiry information acquisition unit (0840). Next, the address determination unit (0850) determines whether the address information “address 50000” included in the inquiry information is included in the unrecorded information stored in the storage unit (0830). If the recorded non-recorded information held in the holding unit (0830) has the contents shown in FIG. 3B, it is determined that “address 50000 is included”. Therefore, the determination result acquisition unit (0880) determines from the unrecorded information stored in the storage unit (0830) that “there is information recording at address 50000”.

  (Embodiment 2: Process Flow) In the optical disc apparatus according to the present embodiment, in addition to the process in the optical disc apparatus according to Embodiment 1, a process for inquiring whether information is recorded in the area indicated by the address information Is done. FIG. 9 exemplifies a flow diagram for explaining the flow of processing for inquiring whether information is recorded in the area indicated by the address information in the optical disc apparatus according to the present embodiment. First, inquiry information for inquiring whether information is recorded in an area indicated by the address information is acquired based on the address information. This process is executed by the inquiry information acquisition unit (0540) (inquiry information acquisition step S0910). Next, it is determined whether the address information indicated by the inquiry information acquired in the inquiry information acquisition step (S0910) is included in the unrecorded information. If it is determined that it is included, the process proceeds to a determination result acquisition step (S0950) described later. If it is determined that it is not included, the process proceeds to an estimation step (S0930) described later. This process is executed by the address determination unit (0550) (address determination step S0920). If it is determined that the determination result in the address determination step (S0920) is not included, a storage unit that stores the determination result of whether or not the area indicated by the address information included in the inquiry information is stored ( 0530) is estimated. This process is executed by the estimation unit (0560) (estimation step S0930). Next, a recording presence / absence determination result is acquired from the position in the holding unit (0530) indicated by the estimation result in the estimation step (S0930). This process is executed by the estimation result acquisition unit (0570) (estimation result acquisition step S0940). If it is determined that the determination result in the address determination step (S0920) is included, the recording presence / absence determination result is acquired from the holding unit (0530) based on the address information included in the inquiry information. To do. This process is executed by the confirmation result acquisition unit (0580) (confirmation result acquisition step S0950).

  In addition, after the inquiry information is acquired, the recorded unrecorded information is retained in the retaining unit, and thereafter, it is determined whether the address information indicated by the inquiry information is included in the retained recorded unrecorded information. It is also assumed that the recording presence / absence determination result is acquired from the holding unit based on the determination result. In that case, after the inquiry information acquisition step (S0910) is executed, the processing shown in FIG. 4 is performed, and then the processing after the address determination step (S0920) may be performed.

  Furthermore, when the holding unit holds the old unrecorded information permanently, after obtaining the inquiry information, the old unrecorded information in which the address information indicated by the inquiry information is held is stored. It may be determined whether it is included, and only when it is determined that it is not included, unrecorded information may be acquired from the optical disc again. In this case, the process flow illustrated in FIG. In FIG. 10, steps other than step S1010 are the same as the steps to which the same reference numerals are assigned in FIGS. First, inquiry information is acquired in an inquiry information acquisition step (S0910). Next, it is determined whether the address information indicated by the inquiry information acquired in the inquiry information acquisition step (S0910) is included in the old unrecorded information already held in the holding unit (S1010). Here, if it is determined that it is included, based on the address information included in the inquiry information, a recording presence / absence determination result is acquired from the old unrecorded information (S0950), and the process ends. If it is determined that it is not included, the processing after the optical pickup moving step (S0410) is performed.

(Embodiment 2: Effect) In addition to the effect of the first embodiment, the optical disk apparatus according to the present embodiment can inquire whether information is recorded in the area indicated by the address information. Further, it is determined whether or not the address information is included in the recorded / unrecorded information. If not included, it is estimated from the recorded / unrecorded information, and if included, the area indicated by the address information based on the address information. Can be obtained. As a result, for example, when information is recorded on the optical disc by the optical disc apparatus, the address information cannot be read correctly, or the address information cannot be read due to a bad recording state. It is possible to check the presence / absence of information recording by estimating from recorded unrecorded information.
(Embodiment 3)

  (Embodiment 3: Overview) In this embodiment, in addition to the function of the optical disc apparatus of Embodiment 2, the success or failure of the read result to the disc is determined, and when the read result is unsuccessful, inquiry information is generated, The present invention relates to an optical disc apparatus having a function of determining whether or not to retry a read according to a recording presence / absence determination result acquired based on inquiry information.

  (Embodiment 3: Configuration) FIG. 11 illustrates a functional block of an optical disk apparatus according to this embodiment. The optical disc apparatus (1100) includes a “determination unit” (1101), an “address information acquisition trie unit” (1102), a “holding unit” (1103), an “inquiry information acquisition unit” (1104), “Address determination unit” (1105), “estimation unit” (1106), “estimation result acquisition unit” (1107), “confirmation result acquisition unit” (1108), “lead determination unit” (1109), It consists of an “inquiry information generation unit” (1110) and a “retry determination unit” (1111). Since the configuration other than the lead determination unit (1109), the inquiry information generation unit (1110), and the retry determination unit (1111) is the same as the configuration of the optical disc apparatus according to the second embodiment, the description here will be given. Omitted.

  The “read determination unit” (1109) has a function of determining the success or failure of the disk read result. As a specific example of the lead determination unit (1109), an optical pickup (1620) of a general optical disc apparatus as shown in FIG. 16 reads an optical disc, and information read by the optical pickup (1620) is read by a signal processing mechanism (1640). It is assumed that the success or failure of the lead is determined by processing.

  The “inquiry information generation unit” (1110) has a function of generating inquiry information based on address information of a disk that has failed to be read when the read result of the disk is unsuccessful. In other words, the inquiry information generated by the inquiry information generation unit (1110) includes address information on the disk on which the optical disk device has failed to read. The inquiry information generated in the inquiry information generation unit (1110) is passed to the inquiry information acquisition unit (1104).

  The “retry determination unit” (1111) has a function of determining whether or not to retry the read according to the record presence / absence determination result acquired based on the inquiry information generated by the inquiry information generation unit (1110). Normally, if the recording presence / absence determination result is a result that information recording is present, a retry is executed. If the recording presence / absence determination result is a result that information recording is not present, the retry is not executed.

  FIG. 12 illustrates a series of operations when the disk read fails. For example, suppose that the optical disk device tries to read the area of address 5080 of the optical disk. Here, it is assumed that the lead determination unit (1209) determines that the read has failed. Then, inquiry information including the address 50080 where reading failed in the inquiry information generating unit (1210) is generated. The generated inquiry information is acquired by an inquiry information acquisition unit (1204). Further, the address determination unit (1205) determines whether the address information address 5080 included in the inquiry information is included in the unrecorded information stored in the storage unit (1203). If the recorded / unrecorded information held in the holding unit (1203) has the contents shown in FIG. 3B, it is determined that “address 50080 is not included”. Next, the estimation unit (1206) estimates that the memory number is “7” by using an equation as shown in FIG. Next, in the estimation result acquisition unit (1207), it is determined from the unrecorded information held in the holding unit (1203) based on the estimation result that “there is information recording at address 5080”. Therefore, the retry determination unit (1211) determines that “read retry is performed for address 5080”.

  (Third Embodiment: Process Flow) FIG. 13 exemplifies a flow chart for explaining a process flow in the optical disc apparatus according to the present embodiment. In FIG. 13, the steps to which the same reference numerals as those in FIG. 9 are given are the same as those in FIG. First, it is determined whether or not the read to the disk is successful. If the result of the determination is successful, the process ends. If it is determined that it has failed, the process proceeds to an inquiry information generation step (S1320) described later. This process is executed by the lead determination unit (1109) (read determination step S1310). Next, if the determination result in the read determination step (S1310) is a determination result that the read has failed, inquiry information is generated based on the address information of the disk that has failed to read. This process is executed by the inquiry information generation unit (1110) (inquiry information generation step S1320). Thereafter, the processing from the inquiry information acquisition step (S0910) to the estimation result acquisition step (S0940) or the determination result acquisition step (S0950) is executed. Finally, it is determined whether or not to retry the read according to the recording presence / absence determination result in the estimation result acquisition step (S0940) or the determination result acquisition step (S0950). This process is executed by the retry determination unit (1111) (retry determination step S1330).

(Embodiment 3: Effects) According to the optical disk apparatus of this embodiment, in addition to the effects of the embodiment 2, when the optical disk apparatus reads the optical disk, it is determined whether or not the reading is successful and the failure. If it is determined that the inquiry has been made, it is possible to determine whether or not to retry the read by generating inquiry information and obtaining the record presence / absence determination result. In the conventional optical disc apparatus, when reading fails, parameters such as a target position of the optical pickup are changed, and a retry is executed. On the other hand, in the optical disc apparatus according to the present embodiment, it is determined whether or not information is recorded in the address area read by the unrecorded information, and when it is determined that the information is recorded. Since only the retry is executed, it is possible to avoid performing the useless retry for the area not recorded. In addition, when the optical disk device fails to read the disk, it can be considered that the address information is destroyed and cannot be read, and the address information can be read but the recorded information cannot be read. In the former case, the read fails even if a retry is performed, so the optical disc apparatus according to the present embodiment is particularly useful in the latter case.
(Embodiment 4)

  (Embodiment 4: Overview) In this embodiment, in addition to the functions of the optical disk apparatus of Embodiments 1 to 3, the area to be recorded is determined based on unrecorded information and recording on the disk is performed. The present invention relates to an optical disc apparatus having a function to be executed.

  (Embodiment 4: Configuration) FIG. 14 illustrates functional blocks of an optical disc apparatus according to this embodiment. The optical disc apparatus (1400) includes a “determination unit” (1401), an “address information acquisition trie unit” (1402), a “holding unit” (1403), an “inquiry information acquisition unit” (1404), “Address determination unit” (1405), “estimation unit” (1406), “estimation result acquisition unit” (1407), “confirmation result acquisition unit” (1408), “lead determination unit” (1409), It consists of an “inquiry information generation unit” (1410), a “retry determination unit” (1411), and a “recording execution unit” (1412). Since the configuration other than the recording execution unit (1412) is the same as the configuration of the optical disc apparatus according to the third embodiment, the description thereof is omitted here.

  The “recording execution unit” (1412) has a function of determining a region where recording is to be executed based on unrecorded information and executing recording on the disc. For example, if the non-recorded information held in the holding unit (1403) has the contents shown in FIG. 3A, the presence or absence of recording is examined in order from the memory number “1”. It can be seen that the presence / absence of recording is “x”. Since the address of the memory number “10” is address 50140 (address B), recording is performed at address 50140. Further, when the address of the corresponding memory number cannot be read in the unrecorded information, the address can be estimated by the formula shown in FIG.

  (Embodiment 4: Flow of Processing) In the optical disk device according to this embodiment, in addition to the processing in the optical disk device according to Embodiment 3, there is a process for executing recording on the disk based on unrecorded information. Done. FIG. 15 exemplifies a flow diagram for explaining the flow of processing for executing recording on a disc based on unrecorded information in the optical disc apparatus according to the present embodiment. First, unrecorded information held in the holding unit (1403) is acquired. This process is executed by the recording execution unit (1412) (recorded unrecorded information acquisition step S1510). Next, an area to be recorded is determined based on the recorded / unrecorded information acquired in the recorded / unrecorded information acquisition step (S1510). This process is executed by the recording execution unit (1412) (recording execution area determination step S1520). Finally, recording is executed in the area determined in the recording execution area determining step (S1520). This process is executed by the recording execution unit (1412) (recording execution step S1530).

  (Embodiment 4: Effects) According to the optical disk apparatus of the present embodiment, in addition to the effects of the third embodiment, an area to be recorded is determined based on unrecorded information and recording on the disk is performed. be able to. Thus, it is possible to know the unrecorded area based on the recorded / unrecorded information without searching for the unrecorded area in order to execute recording on the disc.

Schematic diagram of the main configuration of an optical disc apparatus according to the present invention Functional block diagram of the optical disc apparatus according to the first embodiment An example of unrecorded information FIG. 3 is a flowchart for explaining the processing flow of the optical disc according to the first embodiment. Functional block diagram of the optical disc apparatus according to Embodiment 2 Calculation formula to estimate the position in the holding part where the record existence judgment result is held Specific example when address information is not included in unrecorded information Specific example when address information is included in unrecorded information FIG. 5 is a flowchart for explaining the processing flow of the optical disc according to the second embodiment. FIG. 5 is a flowchart for explaining the processing flow of the optical disc according to the second embodiment. Functional block diagram of an optical disc apparatus according to Embodiment 3 Specific example when disk read fails FIG. 9 is a flowchart for explaining the processing flow of the optical disc according to the third embodiment. Functional block diagram of optical disc apparatus according to Embodiment 4 FIG. 9 is a flowchart for explaining the processing flow of the optical disc according to the fourth embodiment. Overview diagram of conventional optical disk device

Explanation of symbols

0110 Optical Pickup 0120 Actuator 0130 Optical Disk 0140 Signal Processing Mechanism 0150 Servo Control Circuit 0160 Judgment Unit 0170 Address Information Acquisition Triing Unit 0180 Holding Unit

Claims (7)

A determination unit for determining whether information is recorded for each predetermined interval area of the optical disc;
An address information acquisition trie that attempts to acquire address information for each area from the optical disc;
A holding unit that holds recorded unrecorded information that is information in which the determination result of the recording unit in the determination unit is associated with the result of the attempt by the address information acquisition trie unit;
An optical disc apparatus having   2. The result of the trial in the address information acquisition try unit is address information when the address information can be acquired, and information indicating that when the address information cannot be acquired. An optical disk device according to the above. An inquiry information acquisition unit that acquires inquiry information for inquiring whether information is recorded in the area indicated by the address information based on the address information;
An address determination unit that determines whether the address information indicated by the inquiry information is included in the unrecorded information;
In the case where the determination result in the address determination unit is that the determination result is not included, the position in the holding unit that holds the recording presence / absence determination result of the area indicated by the address information included in the inquiry information An estimation unit for estimating
An estimation result acquisition unit that acquires the recording presence / absence determination result from the position in the holding unit indicated by the estimation result of the estimation unit;
When it is a determination result that the determination result in the address determination unit is included, based on the address information included in the inquiry information, the determination result acquisition that acquires the recording presence determination result from the holding unit And
The optical disc apparatus according to claim 1, comprising: A lead determination unit for determining the success or failure of the disk read result;
An inquiry information generator for generating inquiry information based on the address information of the disk that failed to be read when the read result of the disk is unsuccessful;
A retry determination unit that determines whether or not to retry a read according to a record presence / absence determination result acquired based on the inquiry information generated by the inquiry information generation unit;
The optical disc apparatus according to claim 3, comprising:   5. The optical disc apparatus according to claim 1, further comprising a recording execution unit that determines an area on which recording is to be performed based on the unrecorded information and executes recording on the disc. A determination step of determining whether information is recorded for each predetermined interval area of the optical disc;
Address information acquisition try step for trying to acquire address information for each area from the optical disc;
A holding step for holding unrecorded information, which is information associating the determination result of recording in the determination step with the result of the trial in the address information acquisition try step;
An optical disk recording / unrecording discrimination method having An inquiry information acquisition step for acquiring inquiry information for inquiring whether information is recorded in the area indicated by the address information based on the address information;
An address determination step of determining whether the address information indicated by the inquiry information is included in the unrecorded information;
If it is determined that the determination result in the address determination step is not included, the position in the holding unit that holds the recording presence / absence determination result of the area indicated by the address information in the holding step is estimated. An estimation step;
An estimation result acquisition step of acquiring the recording presence / absence determination result from the position in the holding unit indicated by the estimation result of the estimation step;
If it is determined that the determination result in the address determination step is included, based on the address information included in the inquiry information, confirm that the recording presence determination result is acquired from the unrecorded information A result acquisition step;
7. The method for discriminating unrecorded optical discs according to claim 6, comprising:

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