JP2006085760A - Optical disk drive - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily check whether or not write errors are apt to occur. <P>SOLUTION: This disk drive has a write/read control means 15 to record data or reproduce the data recorded on an optical disk 11, and a formatting means 16 to format the optical disk 11. This write/read control means 15 has a counter updating means 17 in a predetermined location on the disk 11 to update the counts of the format counter each time the formatting means 16 formats the optical disk 11 in a configuration to record the rewriting data on a formatted optical disk 11. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an optical disc apparatus that records data for rewriting on a formatted optical disc when data is to be rewritten. More specifically, the present invention relates to a format counter provided in a predetermined area of an optical disc each time the optical disc is formatted. The present invention relates to an optical disk device that updates the value of.

  In a DVD-RW in which data can be rewritten, data can be additionally written, but an arbitrary portion of already written data cannot be erased. Therefore, when it is necessary to rewrite the written data, the DVD-RW is erased by erasing all data on the DVD-RW, and then the data for rewriting is written on the DVD-RW. . That is, when data is rewritten, a method of writing new data after formatting is used. On the other hand, an optical disk such as a DVD-RW has a limit on the number of times that data can be rewritten, and writing errors frequently occur when rewriting is performed exceeding the limit number of times. For this reason, in the past, when the incidence of defective writing to the DVD-RW increased, it was replaced with a new DVD-RW, assuming that the life of rewriting of the DVD-RW was reached (this is the first prior art). .

  Further, the following technique has been proposed (referred to as a second conventional technique). In other words, in this technique, a data recording area and a title search in which related information of the data is additionally recorded so that the data can be recognized by a predetermined recording / reproducing device each time data is written to the data recording area. And an information area. For this reason, even after the finalizing process is performed, it is possible to add data to the remaining capacity portion (see, for example, Patent Document 1).

  Further, the following technique has been proposed (referred to as a third conventional technique). That is, in this technique, after power calibration is performed, an area where power calibration is performed next time is created by erasing a certain section from the start address where power calibration is performed to the inner circumference side to create an unrecorded area. Is marked against. For this reason, even after the power calibration area is used up, an increase in the number of times of use of only a specific area in the power calibration area is avoided, and the power calibration area can be used uniformly (for example, , See Patent Document 2).

Further, the following technique has been proposed (fourth conventional technique). That is, in this technique, the calculated value of the optimum recording power when recording information is corrected based on the detected value of the optical phase difference of the optical disc, or the recording power in the state of recording information is corrected. The target value has been corrected. For this reason, the recording power setting value and the recording power control error caused by the decrease in the detected light amount due to the optical phase difference of the optical disk are corrected, so that highly accurate information recording is possible (for example, Patent Document 3). reference).
JP 2003-263860 A JP 2003-272157 A JP 2004-192679 A

  However, when the first prior art is used, it is only known that the writing life of the DVD-RW is exhausted when writing defects frequently occur. As a result, when the data to be written becomes data that cannot be written again, such as a commercial broadcast program, the data cannot be stored on the DVD-RW. For this reason, there has been a demand for means that can indicate that a write failure is likely to occur before a write failure occurs.

  Since the second prior art is a technique that allows data to be additionally recorded in the remaining capacity portion after the finalizing process, a problem that has occurred in the first prior art, that is, a rewriting lifetime is added. This is a technique that is difficult to apply in the case of showing that a write failure is likely to occur before the write failure occurs because ing.

  The third conventional technique avoids an increase in the number of times of use of only a specific area in the power calibration area even after the power calibration area is used up, and uses the power calibration area uniformly. Therefore, the problem that has occurred in the first prior art, that is, because the write life is likely to occur due to the end of the rewriting life, From the viewpoint of showing before occurrence, this is a technique that is difficult to apply.

  The fourth conventional technique is a technique for correcting a recording power set value and a recording power control error caused by a decrease in detected light amount due to an optical phase difference of an optical disk, thereby obtaining a highly accurate information recording method. Therefore, the problem that has occurred in the first prior art, that is, the fact that the write life is likely to occur due to the end of the rewrite life, the write failure occurs. In view of the above, the technique is difficult to apply.

  The present invention was devised to solve the above-mentioned problems, and its purpose is to make it easy to grasp whether a write failure is likely to occur and It is possible to prompt the user to pay attention to the number of formatting that is a measure of whether or not it is likely to occur, and to make it easy to grasp the timing of optical disc replacement, and to provide a dedicated command It is another object of the present invention to provide an optical disk apparatus that can record a counter indicating the number of times of formatting on an optical disk and read it from the optical disk.

  Another object of the present invention is to update the value of the format counter provided in a predetermined area of the optical disk every time the formatting means formats the optical disk, thereby making it possible to know the number of times of formatting. An object of the present invention is to provide an optical disc apparatus that can easily determine whether or not defects are likely to occur.

  In addition to the above purpose, when displaying information indicating the recording contents such as the title and the recording date on the display device, the number of times of formatting is also displayed to check whether writing failure is likely to occur. An object of the present invention is to provide an optical disc apparatus capable of prompting a user to pay attention to the number of formatting times as a guide.

  In addition to the above purpose, when recording data, the number of formatting times is displayed, so that the number of formatting times becomes a guideline as to whether or not writing defects are likely to occur when recording data on an optical disk. It is an object of the present invention to provide an optical disc apparatus that can prompt the user to pay attention to the user.

  In addition to the above purpose, a message indicating the guideline for replacing the optical disk is displayed on the basis of the ratio between the number of rewritable times of the optical disk and the value of the format counter, thereby making it easy to grasp the time for replacing the optical disk. It is an object of the present invention to provide an optical disc apparatus capable of performing the above.

  In addition to the above purpose, when data is recorded on the optical disc, the value of the format counter is displayed on the display provided on the front panel of the main body of the apparatus, so that attention to the number of formatting can be suitably promoted. It is an object of the present invention to provide an optical disc device that can be used.

  In order to solve the above-described problems, an optical disk apparatus according to the present invention records a data on a DVD and reads a data recorded on the DVD, and controls the disk drive to control the DVD. A writing / reading control unit for recording data and reproducing the data recorded on the DVD; and a formatting unit for formatting the DVD by controlling the disk drive unit. The present invention is applied to an optical disc apparatus that records data for rewriting. Then, every time the format control unit formats the DVD, the counter update for updating the value of the format counter provided in the RMD area recorded in the RMA, which is undefined in the DVD standard. Provided on the front panel of the apparatus main body when displaying information indicating the recording contents of the data recorded on the DVD, such as the title and recording date, on the display device and when recording data on the DVD. The format counter value is displayed on the display device and the display device, and a message indicating the guideline for DVD replacement is displayed on the display device on the basis of the ratio between the DVD rewritable count and the format counter value. Information display means.

  That is, the number of times of formatting can be known from the value of the format counter provided in the RMD recorded in the RMA of the DVD. When information indicating the recorded content of the DVD is displayed, the value of the format counter is displayed at the same time. When data (video / audio information) is recorded on the DVD, the value of the format counter is displayed on both the display provided on the front panel of the apparatus main body and the display device for displaying the video. Further, whether or not the DVD needs to be replaced is indicated by a message displayed on the display device.

  An optical disc apparatus according to the present invention records data on an optical disc and records data on the optical disc by controlling the disc drive unit that records data on the optical disc and reads data recorded on the optical disc. Read / write control means for reproducing the data recorded on the disk, and formatting means for formatting the optical disk by controlling the disk drive unit. The read / write control means stores the data for rewriting on the formatted optical disk. This is applied to an optical disk device for recording. Each time the formatting means performs formatting of the optical disk, counter updating means for updating the value of the format counter provided in a predetermined area of the optical disk is provided. That is, the number of times of formatting can be known from the value of the format counter provided in a predetermined area of the optical disc.

  In addition to the above configuration, when displaying information indicating the recording contents of data recorded on the optical disc such as a title and recording date / time on a display device, information display means for displaying the value of the format counter on the display device is provided. ing. That is, when information indicating the recording content of the optical disk is displayed on the display device, the value of the format counter is displayed at the same time.

  In addition to the above configuration, the information display means displays the value of the format counter on the display device when recording data on the optical disc. That is, when data (video / audio information) is recorded on the optical disc, the value of the format counter is displayed on the display device.

  In addition to the above configuration, when the information display means displays the value of the format counter on the display device, the information display means indicates a message indicating the guideline for replacing the optical disk based on the ratio between the number of times the optical disk can be rewritten and the value of the format counter. Is displayed. That is, whether or not the optical disk needs to be replaced is indicated by a message displayed on the display device.

  In addition to the above configuration, the information display means displays the value of the format counter on a display provided on the front panel of the apparatus main body when recording data on the optical disc. That is, when data (video / audio information) is recorded on the optical disc, the value of the format counter is indicated on the display provided on the front panel of the apparatus main body.

  According to the present invention, the number of times of formatting can be known from the value of the format counter provided in the RMD recorded in the RMA of the DVD. When information indicating the recorded content of the DVD is displayed, the value of the format counter is displayed at the same time. When data (video / audio information) is recorded on a DVD, the value of the format counter is displayed on a display provided on the front panel of the apparatus main body and a display device for displaying video. Further, whether or not the DVD needs to be replaced is indicated by a message displayed on the display device. For this reason, it is possible to easily grasp whether or not a write failure is likely to occur, and urge the user to pay attention to the number of formats that is a measure of whether or not a write failure is likely to occur. It is possible to make it easy to grasp the time of DVD replacement, and it is possible to record the counter indicating the number of formatting to the DVD and to read from the DVD without providing a dedicated command. It can be.

  In addition, according to the present invention, the number of times of formatting can be known from the value of the format counter provided in a predetermined area of the optical disc, so that it is easy to grasp whether or not writing defects are likely to occur. Can do.

  Furthermore, when the information indicating the recording contents of the optical disk is displayed on the display device, the value of the format counter is displayed at the same time, so that the number of formatting times serving as an indication of whether or not writing defects are likely to occur is displayed. Attention can be urged to the user.

  Furthermore, when data (video / audio information) is recorded on the optical disc, the value of the format counter is displayed on the display device, so attention should be paid to the number of formatting times as a measure of whether or not writing defects are likely to occur. Can be prompted to the user.

  Furthermore, since it is indicated by a message displayed on the display device whether or not the optical disk needs to be replaced, it is possible to easily grasp the time for replacing the optical disk.

  Furthermore, when data (video / audio information) is recorded on the optical disc, the value of the format counter is indicated on the display provided on the front panel of the main body of the apparatus. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an electrical configuration of an embodiment of an optical disc apparatus according to the present invention, and specifically shows a DVD recorder. FIG. 2 is an explanatory diagram showing a state of the front surface of the apparatus main body.

  In the figure, a tuner unit 1 receives a commercial broadcast of a channel designated by a microcomputer (hereinafter referred to as a microcomputer) 7 and outputs an analog video signal obtained by the reception to an A / D conversion unit 2. To do. The A / D conversion unit 2 converts the analog video signal output from the tuner unit 1 into a digital video signal and outputs the digital video signal to the recording / playback signal processing unit 3. The D / A conversion unit 4 converts the digital video signal output from the recording / playback signal processing unit 3 into an analog video signal, and outputs the analog video signal to a television receiver (display device described in claims) 19 provided outside.

  The disk drive unit 5 stores data obtained by performing processing such as encoding on the compressed video / audio information output from the recording / playback signal processing unit 3 (DVD is an optical disk according to claims, for example, a DVD -RW etc.) Also, the data recorded on the DVD 11 is read out, and the compressed video / audio information obtained by performing processing such as demodulation and error correction is output to the recording / playback signal processing unit 3.

  The recording / playback signal processing unit 3 compresses the video / audio information output from the A / D conversion unit 2 in accordance with MPEG2. Thereafter, the compressed video / audio information obtained by the compression process is output to the disk drive unit 5. Further, the compressed video / audio information output from the disk drive unit 5 is decompressed in accordance with MPEG2. Then, the digital video signal obtained by the decompression process is output to the D / A converter 4. An on-screen display unit (hereinafter referred to as OSD unit) 13 generates a signal indicating characters, symbols, and the like instructed from the microcomputer 7 and outputs the signal from the recording / playback signal processing unit 3 to the D / A conversion unit 4. Superimpose on the digital video signal.

  The input circuit unit 8 includes a key switch such as a power key 24 provided on the front panel 22 of the apparatus body 21, a light receiving unit that receives an infrared signal transmitted from a remote controller (hereinafter referred to as a remote controller) 9, and the like. When an instruction from the user is input, the input instruction is output to the microcomputer 7.

  The display 6 is provided at a substantially central position of the front panel 22 of the apparatus main body 21, and displays time information indicating the playback position, etc. during playback of the DVD 11. Further, when data (video / audio information) is recorded on the DVD 11, a recording time and a recording mode are displayed.

  The microcomputer 7 controls main operations as a DVD recorder. That is, the channel received by the tuner unit 1 is controlled in accordance with a user instruction input to the remote controller 9 or the like. Further, the commercial reading received by the tuner unit 1 is converted into video / audio information (data) and recorded on the DVD 11 by the reading / writing control means 15 constituted by a part of the function. Also, the video / audio information (data) recorded on the DVD 11 is reproduced and displayed on the television receiver 19. Also, the disc information recorded in the lead-in area of the DVD 11 is read and stored inside.

  Note that the writing / reading control means 15 records the data for rewriting on the formatted DVD 11 when data is rewritten.

  Further, the microcomputer 7 constitutes formatting means 16, counter updating means 17, and information display means 18 by a part of functions, and the formatting means 16 controls the disk drive unit 5 to The DVD 11 is formatted. The counter updating unit 17 updates the value of a format counter (described in detail later) provided in a predetermined area of the DVD 11 every time the formatting unit 16 formats the DVD 11.

  When the information display means 18 is instructed to display the recorded content of the DVD 11, the information indicating the content of the video / audio information (data) recorded on the DVD 11, such as the title, recording date and time, and recording mode, is given to the television receiver 19. indicate. At this time, the value of the format counter is also displayed on the television receiver 19.

  Further, when recording the video / audio information (data) on the DVD 11, the information display means 18 displays the value of the format counter on the television receiver 19 on which the video / audio being recorded is displayed. At the same time, the value of the format counter (indicated by 28 in FIG. 2) is also displayed on the display device 6.

  Further, when displaying the value of the format counter on the television receiver 19, the information display means 18 is based on the ratio between the DVD 11 rewritable number of times (1000 times in the case of DVD-RW) and the value of the format counter. A message (which will be described in detail later) indicating the standard of replacement is also displayed on the television receiver 19.

  FIG. 5 is an explanatory diagram showing a configuration of information recorded in an area provided on the inner peripheral side of the optical disc, and FIG. 6 is an explanatory diagram showing a configuration of information in RMD (Recording Management Data). The area provided with the format counter will be described with reference to FIG.

  As shown in FIG. 5A, an R-information Area is provided on the inner peripheral side of the optical disc (DVD-RW, etc.) 11, and this R-information Area is shown in FIG. As described above, it is composed of a PCA (Power Calibration Area) and an RMA (Recording Management Area). The RMA records RMA-Lead-in and a plurality of RMDs as shown in FIG.

  The RMD includes three types of RMD from Format1 to Format3. In the case of DVD-RW, two types of RMD, Format2 RMD and Format3 RMD, are used. Each RMD is provided with 15 fields, Field0 to Field14, as shown in FIG.

  FIG. 6 shows the detailed configuration of Field1 in Format2 RMD, and the format counter used in the present invention uses 2 bytes from the 14th byte to the 15th byte. The 2nd byte from the 14th byte to the 15th byte is an undefined area in the standard. For this reason, even when 2 bytes from the 14th byte to the 15th byte are used as the format counter, destruction of other defined information is prevented.

  Further, reading of disc information from the DVD 11 is performed by reading RMD. Therefore, the format counter value is read only by reading the disc information. Further, the value of the format counter of the DVD 11 is updated only by writing the RMD indicating the disc information (including the format counter whose value is updated) to the DVD 11. For this reason, it is not necessary to prepare a dedicated command for reading the format counter or updating the value of the format counter, and only by using a command used in the control not using the format counter, The value can be updated.

  7 and 8 are flowcharts showing main operations of the embodiment. The operation of the embodiment will be described with reference to FIG.

  After the DVD (for example, DVD-RW) 11 is placed on the tray (shown by 23 in FIG. 2), when the tray 23 is moved to the storage position (step S1), the microcomputer 7 performs recording / playback with the disk drive unit 5. By controlling the signal processing unit 3, the disc information stored in the RMA is read and stored inside. The disc information read and stored at this time also includes the value of the format counter (the initial value of the format counter of the new DVD 11 is 0) (step S2). Then, it waits for an operation instruction to be input to the remote controller 9 or the like (step S3).

  If the input instruction is format, the formatting means 16 controls the disk drive unit 5 to format the DVD 11 (steps S4 and S5). When the formatting is completed, the counter updating means 17 increments the value of the format counter read from the DVD 11 and stored in the microcomputer 7 by one (step S6). Then, disc information indicating that formatting has been performed is written to the DVD 11. At this time, since the disc information written on the DVD 11 includes a format counter whose value is incremented by one, the value of the format counter recorded on the DVD 11 has a value when compared with that before formatting. It is increased by one (step S7).

  On the other hand, when the instruction input in step S3 is an instruction to display the contents of the video / audio information (data) recorded on the DVD 11, the operation shifts from step S4 to steps S11 and S12. (Information indicating program title, recording date and time, recording mode, etc.) is read. Based on these pieces of information, the information display means 18 controls the OSD unit 13 to display the title of the video / audio information recorded on the DVD 11 on the television receiver 19 as shown in FIG. In addition, the recording date and time and the recording mode are displayed for each title. Further, the value of the format counter read from the DVD 11 and stored is displayed (step S13).

  As for the value of the format counter at this time, the number of rewritable times in the DVD11 standard (when DVD11 is DVD-RW, this value is 1000) is used as a denominator, and the format counter value is a fraction with the numerator. indicate. For this reason, it is possible to easily grasp the ratio of the current number of rewrites (format counter value) to the number of rewrites that need to be replaced. A message indicating whether or not replacement is necessary is also displayed (step S14).

  FIG. 9 shows the relationship between the value of the format counter and the displayed message when the DVD 11 is a DVD-RW with a standard rewritable count of 1000. That is, when the value of the format counter is 300 or less, a message indicating that replacement is unnecessary is displayed because there is a sufficient margin for the upper limit of the number of rewritable times. When the value of the format counter is in the range of 301 to 600, a message indicating that the replacement is safer is displayed. In addition, when it is in the range of 601 to 1000, a message recommending replacement is displayed, and when exceeding 1000 times, a message indicating that replacement is necessary is displayed.

  On the other hand, when the instruction input in step S3 is an instruction for recording a commercial broadcast received by the tuner unit 1, the read / write control means 15 stores the video / audio information indicating the commercial broadcast received by the tuner unit 1 on the disc. The operation of recording on the DVD 11 is started via the drive unit 5. The recorded video / audio is displayed on the television receiver 19 (steps S21 and S22).

  Further, after the recording is started, the information display means 18 displays the value of the format counter (indicated by 28 in FIG. 2) on the display 6 provided on the front panel 22 (step S23). Further, the information display means 18 indicates that the current mode is a display mode in which the value of the format counter is displayed on the television receiver 19 during recording, or the format counter is displayed on the television receiver 19 even during recording. It is checked whether the mode is a non-display mode that does not display the value of. When the display mode is set, as shown in FIG. 4, the value of the format counter and a message serving as a guide for replacement are displayed on the television receiver 19 on which the video being recorded is displayed (steps S24 to S24). S26). On the other hand, when it is determined in step S24 that the display mode is the non-display mode, the display of the format counter value on the television receiver 19 is stopped.

  When the instruction input in step S3 becomes an instruction for other operations, the operation corresponding to the input instruction is executed (steps S21 and S27).

  In addition, this invention is not limited to the said embodiment, About the message used as the standard of replacement | exchange, it can be set as another expression. Similarly, the format counter value range can be divided in other ways.

  In addition, the area where the format counter is provided can be another area of the RMD that is not defined.

It is a block diagram which shows the electric constitution of one Embodiment of the optical disk apparatus based on this invention. It is explanatory drawing which shows the mode of the front panel of an apparatus main body. It is explanatory drawing which shows the screen of the television receiver on which the information which shows the recording content of an optical disk, and the value of the format counter were displayed. It is explanatory drawing which shows the screen of the television receiver on which the image | video recorded on an optical disk and the value of a format counter were displayed. It is explanatory drawing which shows the structure of the information recorded on the area | region provided in the inner peripheral side of DVD. It is explanatory drawing which shows the information recorded on Field1 of RMD. It is a flowchart which shows the main operation | movement of embodiment. It is a flowchart which shows the main operation | movement of embodiment. It is explanatory drawing which shows the relationship between the value of a format counter, and the message displayed.

Explanation of symbols

5 Disc drive unit 6 Display 11 DVD (optical disc)
15 Writing / reading control means 16 Formatting means 17 Counter updating means 19 Television receiver (display device)
21 Device body 22 Front panel 28 Format counter values S6 and S7 Step S13 for updating the value of the format counter Step S14 for displaying the value of the format counter on the display device Step S23 for displaying a message indicating an indication of replacement Format on the display unit Step S25 for displaying the value of the counter Step S26 for displaying the value of the format counter on the display device Step for displaying a message indicating an indication of replacement

Claims (6)

A disk drive unit for recording data on a DVD and reading data recorded on the DVD;
A writing / reading control unit for controlling the disk drive unit to record data on the DVD and to reproduce the data recorded on the DVD;
A formatting means for formatting the DVD by controlling the disk drive unit,
The read / write control means is an optical disc apparatus for recording rewrite data on a formatted DVD.
Counter updating means for updating the value of the format counter provided in the RMD area recorded in the RMA and undefined in the DVD standard each time the format control means formats the DVD; ,
A display provided on the front panel of the apparatus main body when displaying information indicating the recording contents of data recorded on the DVD, such as a title and recording date, on the display device, and when recording data on the DVD Information display means for displaying on the display device a message indicating an indication of DVD replacement based on the ratio between the DVD rewritable count and the format counter value. An optical disc apparatus comprising: A disk drive unit for recording data on the optical disk and reading the data recorded on the optical disk;
A writing / reading control means for recording data on the optical disk and reproducing the data recorded on the optical disk by controlling the disk drive unit;
A formatting means for formatting the optical disc by controlling the disc drive section,
The read / write control means is an optical disc apparatus for recording data for rewriting on a formatted optical disc.
An optical disc apparatus comprising counter updating means for updating a value of a format counter provided in a predetermined area of the optical disk every time the formatting means formats the optical disk.   An information display means for displaying a value of a format counter on the display device when displaying information indicating the recording contents of data recorded on the optical disc such as a title and a recording date on the display device is provided. Item 3. The optical disk device according to Item 2.   4. The optical disk apparatus according to claim 3, wherein the information display means displays the value of the format counter on the display apparatus when recording data on the optical disk.   When displaying the value of the format counter on the display device, the information display means displays a message indicating a guideline for replacing the optical disk based on a ratio between the number of rewritable times of the optical disk and the value of the format counter. The optical disc apparatus according to claim 3 or 4, wherein:   6. The information display means displays the value of the format counter on a display provided on the front panel of the apparatus main body when recording data on an optical disc. The optical disk device described.

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