JP2007226877A - Write program, disk check program, and disk check method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a write program, a disk check program, and a disk check method for simply and surely diagnosing the recording state of a recording medium. <P>SOLUTION: When user data such as picture data and data for house appliances are written into a disk type recording medium, check data for diagnosing the recording state of the recording medium is written in the prescribed area such as the outer peripheral side of user data by a write control means 14 and the recording medium is loaded, it is discriminated whether check data or user data written into the prescribed area such as the outermost peripheral side can be read or not by a disk check means 15, the recording state of the recording medium is diagnosed on the basis of the discriminated result. Thereby, the recording state of the recording medium can be diagnosed simply and surely, occurrence of failure such that user data recorded in the recording medium cannot be read is prevented. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a writing program, a disk check program, and a disk check method for diagnosing the recording state of a recording medium.

  In recent years, various services relating to photographic images have been provided. For example, a digital camera or digital camera media that has taken a photo is brought into a photo shop such as a minilab, and the ordering terminal or unmanned terminal (kiosk) provided in the store is operated to record the digital camera or media. The image data can be written on a recording medium such as a CD-R or a DVD-R (for the unmanned terminal, see, for example, Patent Document 1 below).

  In addition, image data read from a digital camera or a medium is not simply recorded on a recording medium, but the image data is reproduced as a slide show on home appliances such as a DVD player, a DVD recorder, an HDD recorder, and a game machine. (Hereinafter referred to as “home appliance data”) and writing the image data and home appliance data as a set to a recording medium, or reproducing the image data and the image data as a slide show on a computer device There is also a service for writing to a recording medium as a set with an application for this purpose.

Japanese Patent Laid-Open No. 11-8817 (page 3-4, FIG. 1)

  Since the image data and the data for home appliances are important data for the user, it is necessary to write them on a recording medium so that they can be surely read. Is low and reading errors are likely to occur. Therefore, in the disc drive, writing is performed under the irradiation condition of laser light (called a write strategy) for forming a pit having an optimum shape according to the recording medium, thereby suppressing the occurrence of a reading error.

  However, some recording media do not have information that defines the write strategy, and even if information that defines the write strategy is written on the recording medium, the information is read on the disk drive side. In such a case, writing cannot be performed with an optimal write strategy, and reading errors are likely to occur. Even if writing is performed with an optimum write strategy, the recording medium is easily deformed due to its structure, and the degree of deformation (warping) increases particularly on the outer peripheral side. Therefore, the data recorded on the outer peripheral side of the recording medium. May become unreadable over time.

  In view of such a background, a proposal for appropriately diagnosing the recording state of the recording medium and preventing the occurrence of problems such as the inability to read data recorded on the recording medium is desired.

  The present invention has been made in view of the above problems, and its main object is to provide a writing program, a disk check program, and a disk check method for easily and reliably diagnosing the recording state of a recording medium. It is in.

  In order to achieve the above object, the writing program of the present invention is a means for writing specific data used for diagnosing the recording state of a recording medium into a predetermined area of a disk type recording medium in which user data is written. , Function as

  In the present invention, the means is configured to write the specific data on an outer peripheral side of the area where the user data is written, or to write the specific data to each of a plurality of areas separated from each other. be able to.

  Further, the present invention is a program for diagnosing the recording state of a disk type recording medium in which user data is written, and is used for diagnosing the recording state of the recording medium that has been written in the recording medium in advance. Specific data is identified and functions as means for diagnosing the recording state of the recording medium based on whether the specific data is readable.

  The present invention also relates to a program for diagnosing the recording state of a disk type recording medium into which user data is written, the computer identifying the user data previously written in a predetermined area of the recording medium, and Based on whether or not data can be read, it functions as a means for diagnosing the deterioration state of the recording medium.

  In the present invention, the means is configured to diagnose the recording state of the recording medium based on whether the user data written in the outermost area is readable, or from the innermost side to the outer side. The recording state of the recording medium can be diagnosed based on whether or not the user data written in a continuous area toward the side can be read.

  The present invention also relates to a method for diagnosing the recording state of a disk-type recording medium in which user data is written, the specific data used for diagnosing the recording state of the recording medium in a predetermined area of the recording medium And a second step of identifying the specific data written to the recording medium and diagnosing the recording state of the recording medium based on whether the specific data is readable And at least.

  In the present invention, in the first step, the specific data is written on an outer peripheral side of the area where the user data is written, or the specific data is written in each of a plurality of areas separated from each other. It can be configured.

  The present invention also relates to a method for diagnosing the recording state of a disc type recording medium to which user data is written, the user data written in advance in a predetermined area of the recording medium is identified, and the user data is read. It has at least a step of diagnosing the deterioration state of the recording medium based on whether or not it is possible.

  In the present invention, in the step, the recording state of the recording medium is diagnosed based on whether or not the user data written in the outermost area is readable, or the outermost to outer The recording state of the recording medium can be diagnosed based on whether or not the user data written in a continuous area toward the side can be read.

  Thus, in the present invention, specific data for diagnosing the recording state of the recording medium is written on the recording medium, and the recording state of the recording medium is diagnosed based on whether or not the specific data can be read. In addition, since the recording state of the recording medium is diagnosed based on whether or not user data written in a predetermined area of the recording medium can be read, the recording state of the recording medium can be easily and reliably diagnosed. Thus, it is possible to prevent the occurrence of problems such as the inability to read user data recorded on the recording medium.

  According to the writing program, the disk check program, and the disk check method of the present invention, it is possible to easily and reliably diagnose the recording state of the recording medium, and the occurrence of problems such as the inability to read user data recorded on the recording medium. It can be prevented in advance.

  The reason for this is that when writing user data such as image data or home appliance data on a recording medium, the writing program diagnoses the recording state of the recording medium in a predetermined area such as the outer periphery of the user data. This is because the check data is written, the check data is identified by the disc check program, and the recording state of the recording medium is diagnosed based on whether or not the check data can be read.

  In addition, the user data written in a predetermined area such as the outermost side is identified by the disc check program, and the recording state of the recording medium is diagnosed based on whether or not the user data can be read.

  In a preferred embodiment of the disk check method according to the present invention, when writing user data such as image data or home appliance data on a disk-type recording medium, a predetermined area such as the outer periphery side of the user data, Write check data for diagnosing the recording state of the recording medium, and when the recording medium is loaded, identify the check data or user data written in a predetermined area such as the outermost side, and check The recording state of the recording medium is diagnosed based on whether data or user data is available. As a result, the recording state of the recording medium can be easily and reliably diagnosed, and when the recording medium is deteriorated, processing such as backup of user data to another recording medium can be performed. It is possible to prevent the occurrence of problems such as the inability to read user data recorded on the medium.

  In order to describe the above embodiment in detail, a writing program, a disk check program, and a disk check method according to the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram schematically illustrating a configuration of a control device according to a first embodiment of the present invention, and FIGS. 2 to 6 are diagrams illustrating variations thereof. FIG. 7 is a block diagram showing the means of the control device, and FIGS. 8 and 9 are flowcharts showing the procedure of processing using the control device. FIG. 10 is experimental data showing a distribution (radial distribution) of the frequency of occurrence of reading errors in a disk type recording medium with respect to the recording time, and FIG. 11 is a diagram showing recording areas of various data in the recording medium. is there. FIG. 12 is a diagram showing a data recording structure in the recording medium, and FIG. 13 is a diagram schematically showing a structure of the recording medium (CD-R).

  As shown in FIG. 1 and FIG. 7, the control device 1 of this embodiment includes a smart media, a compact flash (registered trademark), a memory stick (registered trademark), an SD memory card, and a multimedia card loaded in the media loading unit 2. Such as a recording medium (hereinafter referred to as a medium 8), a digital camera 7 (including both a digital still camera and a digital movie camera) connected to the device connection unit 3, and a photographing device such as a camera-equipped mobile phone 7a. Data input for reading image data (still image data, moving image data, and data including image information are collectively referred to as image data) from a server 10 or the like connected via a communication network 11 such as the Internet by a network connection unit. Based on the means 12 and the image data, a DVD player or a DVD record A data generation unit 13 that generates data for home appliances that can be played back by home appliances such as HDD recorders and game machines, and generates reduced image data such as thumbnail image data and screen nail image data; and a recording medium loading unit 4 Is recorded on the recording medium 9 together with the image data and home appliance data on the recording medium 9 such as CD-R / RW, DVD ± R / RW, DVD-RAM, HD-DVD, Blu-ray disc, etc. Write control means 14 for writing specific data for diagnosing the state (hereinafter referred to as check data), and check data written in advance in the recording medium 9 loaded in the recording medium loading unit 4 are identified, A disk check means 15 for diagnosing the recording state of the recording medium 9 based on whether or not the check data can be read; A storage unit 16 such as an HDD or a RAM for storing data and the like; a display unit 5 such as an LCD or CRT; and an operation unit 6 such as a button, a keyboard or a mouse.

  Each of the above units may be configured as hardware, configured as a writing program that causes the computer to function as the writing control unit 14, or configured as a disk check program that causes the computer to function as the disk checking unit 15. These programs may be installed in the control device and executed.

  Moreover, although the example of the unmanned terminal (kiosk) was shown as the control apparatus 1 in FIG. 1, the form of the control apparatus 1 is arbitrary, for example, it is set as a computer apparatus as shown in FIG. 2, or as shown in FIG. A dedicated set-top box, a portable writer as shown in FIG. 4, a DVD recorder or an HDD recorder having an arithmetic processing function as shown in FIG. 5, or a hard disk as shown in FIG. It is also possible to use a portable device that can separate the terminal and the main body that reads and writes image data, or a car navigation device that has an arithmetic processing function.

  Next, a procedure for writing various data to the recording medium 9 using the control device 1 having the above-described configuration will be described with reference to the flowchart of FIG.

  First, in step S101, the media 8 is loaded into the media loading unit 2 of the control device 1, or the digital camera 7 or the camera-equipped mobile phone 7a is connected to the device connection unit 3, and the data input unit 12 is used in step S102. Then, the image data recorded on the digital camera 7 or the medium 8 is read, and data to be recorded on the recording medium 9 is selected from the read image data as necessary. Here, the image data to be read is not limited to the image data obtained by photographing with the digital camera 7, but the image data obtained by scanning a negative film or a photo print, or the moving image data obtained from a video tape recorder or the like. Still image data obtained by capturing a moving image may be used, and the reading destination may be a recording medium such as a CD-R or DVD-R or a server 10 connected via the communication network 11. Good.

  Next, in step S103, if necessary, the data generation unit 13 is used to generate (encode) moving image data based on the read image data, and can be reproduced on the home appliance based on the generated moving image data. Data (for example, video-CD format data when the moving image data is in the MPEG1 format and DVD-Video format data when the moving image data is the MPEG1 or MPEG2) is generated (authored). Further, reduced image data such as thumbnail image data or screen nail image data obtained by reducing the data size of the read image data is created as necessary.

  In step S104, the recording medium loading unit 4 is loaded with a recording medium 9 such as a CD-R / RW, DVD ± R / RW, DVD-RAM, HD-DVD, or Blu-ray disc. Although any commercially available recording medium can be used as the recording medium 9, data may be recorded only on a specific recording medium. In this case, in step S105, the recording medium is recorded. Whether or not identification information for identifying the recording medium 9 is recorded in a predetermined area 9 is checked. If identification information is recorded, it is determined that the recording medium 9 is a specific recording medium 9. If the contents of the identification information are easily known, the identification information itself is also copied. Therefore, at least part of the identification information is information that cannot be recorded by the computer OS, specifically information in the program memory area. It is also preferable to use information by guide groove modulation (ATIP: Absolute Time In Pre-groove) applied at the time of CD-R molding.

  Here, the structure of a general recording medium 9 (CD-R) will be described with reference to FIG. 13. The CD-R is formed on a polycarbonate substrate 100 with an organic dye layer 101 such as cyanine, phthalocyanine, or azo. A reflective layer 102 made of silver or the like and a protective layer 103 are laminated to form a pit by applying a laser beam of a predetermined power to the organic dye layer 101 to decompose the dye and deform the substrate to form pits. Recording is performed, but the laser power has an optimum value depending on the type of the laser head that irradiates the laser beam and the type of the organic dye layer 101 to be used. -The drive side needs to recognize the recommended type of R type and laser recording power. Therefore, information such as the disc application code and recommended laser recording power is written as information by guide groove modulation (ATIP) at the recording medium manufacturing stage, and this information is read by the drive firmware. The laser power is adjusted by control. Since such guide groove modulation (ATIP) can only be created at the time of manufacture, copying at the user level can be prevented. Further, lead-in start time, maximum lead-out startable time, etc., which are guide groove modulation (ATIP) other than the above, can be used as identification information by appropriately setting.

  Next, various data are recorded on the recording medium 9 loaded in the recording medium loading unit 4 using the writing control means 14. At this time, since the recording area in which data can be read is limited in the home appliance, in the case of recording home appliance data, the generated home appliance data is stored in the logical address area of the recording medium 9 in step S106. After writing to the peripheral side and closing the session as necessary, in step S107, computer equipment such as read image data, reduced image data as necessary, application, management data in which identification information of the recording medium 9 is described The business data is written on the outer peripheral side of the home appliance data recorded on the tip of the recording medium 9. The logical address area is an area in which data for computer equipment, data for household electrical appliances and the like (collectively referred to as user data) is recorded, and a program memory in which arrangement information of user data is recorded. Area, information area such as lead-in / TOC (Table Of Contents) area and lead-out area, disc application code, recommended value of laser recording power, and other areas of guide groove modulation (ATIP) information where other information is recorded Not including the logical address area means an area other than the logical address area.

  Here, as shown in the prior art, the disk-type recording medium 9 has poorer write quality on the outer peripheral side and is more easily deformed on the outer peripheral side, so that a read error occurs when reading data written on the outer peripheral side. It's easy to do. This read error will be described in detail. For example, a CD uses an error correction method called CIRC (Cross Interleave Reed-Solomon Code), and adds a Reed-Solomon code (C2 code) for error correction to the original data. Then, this is distributed to a plurality of frames, and a Reed-Solomon code (C1 code) is added to each frame again to record data. When a part of the data cannot be read, the C1 code or C2 code is used. So that it can be repaired. An error that can be repaired by the C1 code is called a C1 error, an error that can be repaired by the C2 code is called a C2 error, and an error that cannot be repaired by the C2 code is called a CU error. These read errors are recorded as shown in FIG. As time increases (that is, the outer peripheral side of the recording medium 9), the frequency of occurrence increases.

  Accordingly, since there is a high possibility that the data written in the outer peripheral area of the recording medium 9 cannot be read, in this embodiment, the write control means 14 (or write program) is stored in advance in the storage means 16 in step S108. The stored check data is written on the outer periphery side of the previously recorded user data (computer device data here).

  The check data may be any data that can be confirmed by the disk check means 15 described later, and the content of the data and the file format are not particularly limited. Also, the size of the check data is not particularly limited, but as the size of the user data is larger, the data is written to the outer periphery side, and a read error is more likely to occur than in FIG. 10, so the size of the check data is set according to the size of the user data. Since the recording state can be surely diagnosed by increasing the size, or when information defining the write strategy is recorded on the recording medium 9, it can be determined that the recording state is good. It may be small.

  In the above description, the check data is written on the outer periphery side of the user data. However, since an area where a reading error is likely to occur is about 20% on the outer periphery side of the recording medium 9 from FIG. Check data may be written. For example, when the size of the user data is small and does not reach the area, predetermined dummy data may be recorded and the check data may be written on the outer periphery side thereof. In the above description, one check data is written. However, since the recording state of the recording medium 9 changes in the radial direction of the disk, for example, the first check data is written on the outer peripheral side of the home appliance data. The check data may be written in a plurality of areas, such as writing the second check data on the outer peripheral side of the computer equipment data, or writing the check data at equal intervals in the radial direction. In this case, the plurality of check data may be data of the same content, file format, and size, or may be data of different content, file format, and size.

  The recording medium 9 created by the above procedure is, for example, as shown in FIG. 11A, and identification information is written as necessary outside the innermost logical address area of the disk type recording medium 9, Home appliance data is written to the inner area of the logical address area as needed, and the outer area of the home appliance data is used for computer equipment such as image data, reduced image data, applications, and management data. Data is written, and further, check data is written in the outer peripheral area (the outermost peripheral area) of the computer equipment data. It should be noted that the outermost area means the outer periphery side of the data that is substantially used by the user, and is a concept including the case where dummy data other than the user data is further written on the outer periphery side of the check data. . In addition, when writing a plurality of check data, as shown in FIG. 11B, check data in each of a plurality of arbitrary regions (here, the outer peripheral side of home appliance data and the outer peripheral side of computer device data). Is written.

  The directory structure of the recording medium 9 is as shown in FIG. 12A, for example, and image data, reduced image data, management data (index.pvm in a folder (PS_Roll folder) indicating the storage location of image data) ), Data for a computer device composed of a slide show program or a slide show setting file in the APPL folder, check data (Verify.txt), and image data in the “VCD” folder are associated as Video-CD format data. Household appliances composed of files, image data to be displayed on the TV screen in the “SEGMENT” folder, video data in the “MPEGAV” folder, and applications for displaying still image data on the TV screen in the “CDI” folder Data (Video-CD format data) is recorded. When the DVD-Video format data is generated, as shown in FIG. 12B, VIDEO_TS.IFO in which the chapter position information is described in the “VIDEO_TS” folder and its backup file VIDEO_TS.BUP And a video manager (VMG) composed of VIDEO_TS.VOB for the title selection menu, VTS _ ** _ 0.IFO in which the chapter position information is described, and VTS _ ** _ 0.BUP and VTS which are backup files thereof Data for home appliances composed of a video title set (VTS) such as VTS _ ** _ *. VOB, which is video data of each title, is recorded.

  The folder structure, the folder name, the file name, etc. are arbitrary, but in order to associate the recording structure with the identification information, for example, the identification information is YYMDyyyXXXXXXAAB (YYMD: a number specifying the date of writing, yyy: every day XXXXXX: random ID number, AA: manufacturer code (00 to ZZ), B: software, product category (0 to Z)), folder indicating the storage location of image data (PS_Roll) ), A folder indicating the storage location of data for each media 8, each device, and each film is provided in the lower hierarchy, and the name of the folder is ROYYMMDDyyy_XXXXXXAABxxx (YYMMDD: number specifying the date of writing, yyy: sequential number for each day) , XXXXXX: Random ID number, AA: Manufacturer code (00 to ZZ), B: Software, product category (0 to Z), xxx: Sequential Or a number), CCYYMMDDxxxxxx the file name of each data (CC: type of data, YYMMDD: numbers identifying the write date, xxxxxx: it is preferable to such sequential number).

  Next, the procedure for diagnosing the recording state of the recording medium 9 using the control device 1 will be described with reference to the flowchart of FIG.

  First, in step S201, when the recording medium 9 created in the above-described flow is loaded into the recording medium loading unit 4 of the control device 1, the disk check unit 15 (or disk check program) identifies check data in step S202. To do. The check data identification method is not particularly limited. For example, when the check data is written in the outermost area, the last sector can be checked to identify the check data. If it is written in this area, the check data can be identified by referring to the file name.

  In step S203, the disk check unit 15 determines whether the check data can be read. Specifically, for example, it is determined that the check data can be read when the check data can be opened by a predetermined application, the read is determined when the check data can be decoded, or the check data can be read when the check data can be copied. It may be determined, or may be determined to be readable when information described in the check data matches predetermined information.

  If the check data is readable as a result of the determination, it can be determined that the recording medium 9 has not deteriorated. Therefore, in step S204, image data recorded on the recording medium 9, data for home appliances, or the like is used. Predetermined processing.

  On the other hand, if the check data cannot be read, it can be determined that the recording medium 9 has deteriorated, and the user data cannot be read if left as it is. Therefore, in step S205, the user data recorded on the recording medium 9 cannot be read. Read. Although it is preferable to read all user data, when the recording medium 9 has already deteriorated and cannot read all user data, only readable user data may be read, or laser power may be read. The user data may be read again to retry reading the user data, and as much user data as possible may be read.

  Next, in step S206, in order to store the read user data safely, a new recording medium 9 is loaded into the recording medium loading unit 9, and in step S207, the writing control means 14 (or writing program) is used. Similarly to the flow of FIG. 8, after writing the home appliance data in the innermost periphery of the logical address area of the new recording medium 9, and closing the session if necessary, in step S208, the outer periphery of the home appliance data In step S209, check data stored in advance in the storage unit 16 is written on the outer peripheral side of the computer device data. As described above, dummy data may be written between user data and check data, dummy data may be written on the outer periphery of the check data, or a plurality of check data may be recorded. You may write in the several area | region (For example, area | region divided | segmented into radial direction at equal intervals) of the medium 9.

  As described above, in this embodiment, when writing user data such as image data or home appliance data on the disk-type recording medium 9, the write control means 14 (or the writing program) is used, and the outer side of the user data. The check data for diagnosing the recording state of the recording medium 9 is written in a predetermined area such as, and when the recording medium 9 is loaded, the check data is checked using the disk check means 15 (disk check program). Can be easily and reliably diagnosed by determining whether or not the check data can be read and diagnosing the recording state of the recording medium 9 based on the determination result. Thus, it is possible to prevent the occurrence of problems such as the inability to read user data recorded on the recording medium 9.

  Next, a disk check program and a disk check method according to the second embodiment of the present invention will be described with reference to FIGS. FIG. 14 is a flowchart showing a processing procedure using the control device, and FIG. 15 is a diagram showing a data recording area in the recording medium.

  In the first embodiment described above, a predetermined data (check data) is written in the recording medium 9, and the recording state of the recording medium 9 is diagnosed based on whether or not the check data can be read. However, the recording state of the recording medium 9 can be diagnosed without using this check data. Therefore, in this embodiment, the recording state of the recording medium 9 is diagnosed based on whether the user data recorded in a predetermined area can be read instead of the check data.

  In this case, the configuration of the control device 1 is the same as that shown in FIG. 7, but the write control means 14 does not need to write check data into the recording medium 9 loaded in the recording medium loading unit 4, and the disk check means 15 The user data recorded in a predetermined area of the recording medium 9 is identified, it is determined whether or not the user data can be read, and the recording state of the recording medium 9 is diagnosed based on the determination result. Hereinafter, the procedure for diagnosing the recording state of the recording medium 9 using the control device 1 having such a configuration will be described with reference to the flowchart of FIG.

  First, in step S301, the recording medium loading unit 4 of the control device 1 is loaded with the recording medium 9 in which user data such as image data and household appliance data is written. In step S302, the disk check means 15 (or the disk) is loaded. The check program) identifies user data written in a predetermined area of the recording medium 9 (for example, the outermost area as shown in FIG. 15A). The outermost area mentioned here means the outer periphery side of the data that the user substantially uses, and dummy data other than the user data is further written on the outer periphery side of the user data. It is a concept that also includes Further, the user data to be identified may be one file (for example, one image data), or may be a plurality of files when the size of one file is small.

  Next, in step S303, the disk check means 15 determines whether or not the user data can be read. Specifically, for example, when the user data can be opened by a predetermined application, it is determined to be readable, when the user data can be decoded, it is determined to be read, or the user data can be copied. It is determined that reading is possible. In this example, it is determined whether or not the user data written in the outermost area can be read. However, user data written in an arbitrary area (for example, written in a plurality of equally spaced areas). It may be configured to determine whether or not a plurality of pieces of user data) can be read, or as shown in FIG. 15B, from an arbitrary radial position (for example, the innermost peripheral side) to the outer peripheral side. Alternatively, it may be configured to determine whether or not user data written in a continuous area can be read.

  If the user data is readable as a result of the determination, it can be determined that the recording medium 9 has not deteriorated. Therefore, in step S304, the image data recorded on the recording medium 9, data for home appliances, etc. To perform a predetermined process.

  On the other hand, if the user data cannot be read, it can be determined that the recording medium 9 has deteriorated, and if it is left as it is, any other user data may not be read. Read user data. In this case as well, only readable user data may be read, or the user power may be read again by adjusting the laser power and the like, and as much user data as possible may be read.

  In step S306, a new recording medium 9 is loaded in the recording medium loading unit 9 in order to safely store the read user data. In step S307, the writing control unit 14 (or writing program) is used. After writing the home appliance data read to the innermost periphery of the logical address area of the new recording medium 9 and closing the session as necessary, in step S308, the computer device data is placed on the outer periphery of the home appliance data. Write.

  As described above, in this embodiment, when a disk-type recording medium 9 in which user data such as image data and data for home appliances is written is loaded, the disk check unit 15 (disk check program) is used. By identifying user data recorded in a predetermined area such as the outermost area, determining whether the user data can be read, and diagnosing the recording state of the recording medium 9 based on the determination result Thus, the recording state of the recording medium 9 can be easily and reliably diagnosed, and occurrence of problems such as the inability to read user data recorded on the recording medium 9 can be prevented. In the case of this embodiment, since it is not necessary to write specific data such as check data in the recording medium 9, versatility can be improved as compared with the first embodiment.

  In each of the above embodiments, the case where both home appliance data and computer equipment data are recorded on the recording medium 9 has been mainly described. However, the recording medium 9 includes at least one data (for example, a user's data) , Image data only) may be written.

  In each of the above embodiments, the case where image data is recorded on the recording medium 9 has been described. However, the present invention is not limited to the above embodiment, and other types of data other than image data such as music data. The same can be applied to the case of recording.

  The present invention can be applied to a program and a method for diagnosing the recording state of a recording medium that records any type of data used by a user.

It is an external view which shows the structure of the control apparatus which concerns on 1st Example of this invention. It is a figure which shows the other structure of the control apparatus which concerns on the 1st Example of this invention. It is a figure which shows the other structure of the control apparatus which concerns on the 1st Example of this invention. It is a figure which shows the other structure of the control apparatus which concerns on the 1st Example of this invention. It is a figure which shows the other structure of the control apparatus which concerns on the 1st Example of this invention. It is a figure which shows the other structure of the control apparatus which concerns on the 1st Example of this invention. It is a block diagram which shows the means of the control apparatus which concerns on 1st Example of this invention. It is a flowchart figure which shows the write-in procedure of the check data using the control apparatus which concerns on 1st Example of this invention. It is a flowchart figure which shows the disk check procedure using the control apparatus which concerns on 1st Example of this invention. It is experimental data which shows the error occurrence frequency in a disk type recording medium. It is a figure which shows the recording area of the data in the recording medium of 1st Example of this invention. It is a figure which shows the recording structure of the data in the recording medium of 1st Example of this invention. It is a figure which shows typically the structure of a recording medium (CD-R). It is a flowchart figure which shows the disk check procedure using the control apparatus which concerns on 2nd Example of this invention. It is a figure which shows the disk check area | region in the recording medium based on 2nd Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Control apparatus 2 Media loading part 3 Device connection part 4 Disk drive 5 Display part 6 Operation part 7 Digital camera 7a Cellular phone with a camera 8 Media 9 Recording medium 9a Diagnostic recording medium 10 Server 11 Communication network 12 Data input means 13 Data generation Means 14 Write control means 15 Disk check means 16 Storage means 100 Polycarbonate substrate 101 Organic dye layer 102 Reflective layer 103 Protective layer

Claims (13)

Computer
A writing program which functions as means for writing specific data used for diagnosis of a recording state of a recording medium in a predetermined area of a disk type recording medium in which user data is written.   2. The writing program according to claim 1, wherein the means writes the specific data on an outer peripheral side of an area where the user data is written.   2. The writing program according to claim 1, wherein the means writes the specific data in each of a plurality of regions separated from each other. A program for diagnosing the recording state of a disk type recording medium in which user data is written,
Computer
Identifies specific data written in advance on the recording medium and used for diagnosing the recording state of the recording medium, and diagnoses the recording state of the recording medium based on whether the specific data is readable A disk check program that functions as a means for A program for diagnosing the recording state of a disk type recording medium in which user data is written,
Computer
A function of identifying the user data written in advance in a predetermined area of the recording medium and diagnosing the deterioration state of the recording medium based on whether or not the user data can be read. Disk check program to do.   6. The disk check program according to claim 5, wherein the means diagnoses the recording state of the recording medium based on whether or not the user data written in the outermost area is readable.   The means for diagnosing the recording state of the recording medium based on whether or not the user data written in a region continuous from the innermost side toward the outermost side is readable. 5. The disk check program according to 5. A method for diagnosing a recording state of a disk-type recording medium in which user data is written,
A first step of writing specific data used for diagnosis of a recording state of the recording medium in a predetermined area of the recording medium;
And a second step of identifying the specific data written on the recording medium and diagnosing the recording state of the recording medium based on whether the specific data is readable. And disk check method.   9. The disk check method according to claim 8, wherein, in the first step, the specific data is written on an outer peripheral side of an area where the user data is written.   9. The disk check method according to claim 8, wherein, in the first step, the specific data is written in each of a plurality of areas separated from each other. A method for diagnosing a recording state of a disk-type recording medium in which user data is written,
At least a step of identifying the user data previously written in a predetermined area of the recording medium and diagnosing a deterioration state of the recording medium based on whether or not the user data can be read. Disk check method.   12. The disk check method according to claim 11, wherein in the step, the recording state of the recording medium is diagnosed based on whether or not the user data written in the outermost area is readable.   The step of diagnosing the recording state of the recording medium based on whether or not the user data written in a region continuous from the innermost side toward the outermost side is readable. 11. The disk check method according to 11.

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