JP4315171B2 - Visible image recording method and optical disc recording apparatus for optical disc - Google Patents

Description

  The present invention relates to a visible image recording method and an optical disc recording apparatus for an optical disc that forms a visible image using a laser on a disc surface of an optical disc such as CD-R / RW, DVD + R / RW, and DVD-R / RW. The present invention is suitable for application to a case where a new visible image is added and recorded on an optical disc on which a visible image has already been formed.

It is known to form visible images such as letters and figures using a laser on the recording surface or label surface (surface opposite to the recording surface) of an optical disk.
For example, Patent Document 1 proposes that a visible light characteristic changing layer is provided at a location that can be seen from the label surface side of an optical disk, and that the visible light characteristic is changed by irradiating laser light to form a visible image. .
Patent Document 2 proposes to rewrite a recorded figure by using a reversible phase change material for a recording film in an optical disc capable of recording a visible image using a laser.
Further, Patent Document 3 proposes that a visible image is newly recorded on the recording surface of an optical disc on which a visible image has already been formed.
Patent Document 4 proposes a barcode suitable for forming on the disk surface of an optical disk.
Japanese Patent Laid-Open No. 2002-203321 JP 2003-016649 A JP 2004-039019 A JP 2004-063030 A

As described above, Patent Document 3 proposes that a visible image is additionally recorded on the disk surface of an optical disk on which a visible image has already been formed by a laser.
However, in the case of what is described in Patent Document 3, the mode and order of additional writing are determined in advance, and the user cannot perform additional writing in a free manner.
When adding a visible image, recognizing the position of the already formed visible image on the disc surface prevents the newly recorded image from overlapping with the existing image or creates a useless space. Is necessary to prevent.
For this purpose, in Patent Document 3, (1) a method for detecting a position address from a wobble formed on a disk and recording a start or end address of a recorded visible image position, and ( 2) A method for detecting a region where a visible image is formed from an envelope shape of a reflected light signal has been proposed.
However, in the method (1), it is necessary that a guide groove is provided in a region where a visible image is recorded so that a position address can be detected. In the method (2), it is difficult to detect the position with high accuracy. However, since the location, order, and shape are determined in advance, no particular accuracy is required.

  Accordingly, the present invention provides a visible image recording method and an optical disc recording apparatus for an optical disc that can easily add a visible image to an accurate position in an optical disc capable of recording a visible image using a laser. It is an object.

In order to achieve the above object, in the visible image recording method and optical disc recording apparatus of the present invention, a visible image is formed on the host device side when a visible image is drawn and recorded on the optical disc using a laser. The image data of the optical disc and link information that associates the image data with the identification number of the optical disc are stored. At the time of additional recording, the identification number on the optical disk is read, and when image data corresponding to the identification number is stored in the host device, the visible image already formed on the optical disk is reproduced on the editing screen. The main feature is that
The identification number unique to the optical disc is recorded in a predetermined area of the optical disc when a visible image is first recorded on the optical disc. In that case, a recording area provided with a plurality of guide grooves with a predetermined width is provided in the innermost periphery or / and the outermost periphery of the optical disc, and the identification number is recorded in this recording area. Further, an identification number recorded on the PMA of the optical disc may be used. The visible image is formed in a visible image recording area having a flat mirror surface without a guide groove.
Further, when the identification number is recorded in the recording area of the optical disc, (1) the identification number is encoded by a predetermined encoding method, and marks and spaces are alternately formed in the track of the recording area according to the code (2) A method of assigning each bit of the identification number to a section obtained by dividing the track of the recording area by a predetermined length, and forming the section in a state that can be optically differentiated according to the value of the bit, and (3) The bar code corresponding to the identification number is recorded in a radial manner in the recording area.

According to the visible image recording method and the optical disk apparatus of the present invention, the existing image on the disk can be easily and accurately displayed by the image editing software of the host device, and the user can use the image editing software. It is possible to easily add and edit a new design or character to be added.
Then, the host device processes the information and sends it to the optical disk drive device, so that a visible image can be added to the correct position on the disk corresponding to the editing.

There are roughly two types of optical disks used in the present invention. First, two types of optical disks capable of recording a visible image used in the present invention will be described. Hereinafter, the configuration of the optical disk recording apparatus of the present invention, the operation when the first type of optical disk is used, The operation in the case of using the optical disc of the type will be described in order.
1. First Type Optical Disc FIG. 1 is a diagram showing the structure of a label surface in an embodiment of a first type optical disc 1 used in the present invention. The recording surface may be either a CD system (CD-R / RW) or a DVD system (DVD-R / RW, DVD + R / RW).
As shown in this figure, a guide groove (Groove) is formed in a spiral shape from a predetermined radius to a predetermined radius of the inner periphery of the optical disk 1. Further, a guide groove is formed in a spiral shape from a predetermined radius to a predetermined radius on the outer periphery of the disk. In the illustrated example, the innermost peripheral region 2 having a radius of 22 mm to 24 mm (hereinafter referred to as “inner peripheral side information area”) and the outermost peripheral region 3 having a radius of 56 mm to 58 mm (hereinafter referred to as “outer peripheral side information”). Called "area"). The above-described identification number is stored in the inner peripheral side information area 2 or the outer peripheral side information area 3. Note that it is not necessary to provide both the inner peripheral information area 2 and the outer peripheral information area 3, and only one of them may be provided.
A wobble is formed in the guide groove, and the wobble is subjected to phase modulation, FM modulation, etc. so that disk position information (address information) can be seen. The DVD standard ADIP (Address In Pre-Groove), the CD standard ATIP (Absolute Time in Pre-Groove), or a wobble with completely different specifications may be formed. Further, the length of the wobble (the length of one cycle) may be constant within the region or may be variable.

A region 4 between the inner peripheral side information area 2 and the outer peripheral side information area 3 is a visible image recording region in which a visible image can be recorded. As described in Patent Document 1, a visible image can be formed by irradiating the visible image recording region 4 with laser light to change the visible light characteristics.
In the visible image recording area 4, the guide groove is not formed, but is a flat mirror surface. The reason why the visible image recording area 4 is a mirror surface is that, since the absolute address information on the disk is not required as in the above-mentioned invention of Patent Document 3, it is not necessary to provide a guide groove, and tracking is performed during recording of the visible image. This is because there is no need to apply the light and the presence of the guide groove affects the appearance of the visible image due to light interference or the like.

Further, the optical disk 1 has a predetermined radial direction as a reference angular position in advance. From the mark such as a black dot provided on the optical disk 1, the inner peripheral side information area 2 or the outer peripheral side information area 3. A predetermined address position that can be known can be used as a mark indicating the reference angular position.
When the visible image is recorded on the optical disc 1 for the first time and when the visible image is additionally recorded, the recording of the visible image is started in synchronization with the timing at which the mark indicating the reference angular position is detected. As a result, no matter how many times the drawing is performed, drawing recording starts from the same angular position on the disc each time, and when a new visible image is additionally recorded on the optical disc on which a visible image has already been recorded, the visible image to be additionally recorded Can be recorded at a desired position with respect to the existing visible image.

  In the present embodiment, when a visible image is recorded for the first time in the visible image recording area 4, an identification number unique to the optical disc 1 is stored in the inner information area 2 or the outer information area 3 described above. I am doing so. When a visible image is recorded in the visible image recording area 4, an image that can represent on the host device side the identification number unique to the optical disc 1 and the entire disc surface of the optical disc 1 on which the visible image is drawn and recorded. Data and information (link information) for associating the image data with an identification number unique to the optical disc 1 are stored. Thus, when a new visible image is added and recorded later in the visible image recording area 4 of the optical disc 1, the identification number is read from the optical disc 1, and link information related to the identification number is stored in the host device. When stored, the latest image data associated with the identification number by the link information is displayed on the editing screen of the image editing program, and the visible image already recorded on the optical disc is reproduced, so that The visible image of the shape can be freely arranged without overlapping with the existing visible image, and the visible image can be additionally recorded on the optical disc according to the arrangement on the editing screen.

2. Method for Recording Identification Number in First Type Optical Disc Next, a method for actually recording the identification number in a predetermined area (inner circumference information area 2 or outer circumference information area 3) of the optical disc 1 will be described.
As described above, the identification number is recorded in an area (identification number recording area) within the range where the guide groove is formed in the inner circumference side information area 2 on the inner circumference part of the disc or on the outer circumference side information area 3 on the outer circumference part of the disc. The

2-1. Direct recording As shown in FIG. 2 (a), EFM (Eight to Fourteen Modulation) encoding in which the above-described identification number is used in the inner information area 2 or the outer information area 3 in the CD-R / RW. Alternatively, recording is performed using 8to16 encoding used in DVD recording. That is, recording is performed by alternately forming marks and spaces on each track in accordance with each code of an identification number encoded by EFM encoding or 8to16 encoding. This can be performed in the same manner as in normal CD recording or DVD recording.
When this identification number is reproduced, CD decoding or DVD decoding similar to normal CD or DVD reproduction may be performed.

2-2. Recording a section obtained by dividing a track into predetermined lengths as 1 bit In the case of the above-described recording method, there is a possibility that proper reproduction cannot be performed if the recording quality (jitter or error) is poor during reproduction after recording. Therefore, by increasing the size of one mark, the influence of the recording quality can be exaggerated.
For this purpose, a segment obtained by dividing the track of the inner circumference side information area 2 or the outer circumference side information area 3 by a predetermined length is assigned to one bit of the identification number and recorded. For example, one bit is assigned to a predetermined length such as one ADIP word, one ECC (Error Correcting Code) block, or one subcode frame.
FIG. 2B shows an example in which the mark length is 1 ADIP word and this is associated with 1 bit of the identification number. When the bit is “1”, a random pattern having a length of 1 ADIP word is recorded, and when the bit is “0”, the random number is not recorded, thereby recording the identification number.
Since the reflectance is high at a place where a random pattern is not recorded and the reflectance is low where a random pattern is recorded, the recorded information is obtained by detecting the level of light reflected from the optical disc 1. Can be read. In this case, the identification number can be read without any problem even if the recording state is somewhat bad. Note that the magnitude relationship of the reflectance may be reversed.

2-3. Recorded as a barcode formed using a visible image drawing technique FIG. 2C shows a case where a barcode corresponding to an identification number is formed. A barcode corresponding to the identification number is formed in the inner circumference information area 2 or the outer circumference information area 3 using a visible image forming technique. At this time, the barcode described in Patent Document 4 is preferable. In this figure, each bar of the bar code is arranged linearly, but actually, it is arranged circumferentially (radially). The information recorded on the bar code can be reproduced by detecting the level of light reflected from the optical disc 1 in the same manner as described above.
If the length of the barcode in the radial direction is 2 mm and the circumferential pitch is about 1 mm, reading can be performed without tracking.
When the method for forming the bar code is employed, it is not always necessary to form guide grooves in the inner circumference information area 2 and the outer circumference information area 3.

3. Second Type Optical Disc The above-described first type optical disc records data on a recording surface and records a visible image on a label surface that is the opposite surface. Therefore, when recording a visible image on the label surface after recording data on the recording surface, it is necessary to turn the optical disc upside down and insert it into the drive device.
Next, a second type of optical disk that does not need to be inserted with the optical disk turned upside down will be described. This second type of optical disc is a dual layer disc having a single-sided two-layer structure of a data recording layer and a visible image recording layer (image drawing layer). By simply changing the focus position of the lens, the disc is turned over. Without insertion, both layers (data recording layer and image drawing layer) can be accessed from the same surface. The dual layer optical disc includes a CDR type, a DVDR type, and a mixed type of CDR-DVDR. In the present invention, an optical disc including a CDR data recording layer is targeted.

FIG. 3 is a diagram showing a layer structure of a second type of optical disk used in the present invention, where (a) is a layer structure of a CDR type dual layer optical disk, and (b) is a CDR-DVDR mixed type dual structure. The layer structure of a layered optical disk is shown.
As shown in FIG. 3A, a CDR type optical disk is provided with a polycarbonate layer with a groove (guide groove) and a data recording layer in this order from the data surface side (objective lens side). In the case of a normal CDR, a reflective layer and a protective layer are provided next to the data recording layer. In this disc, a translucent layer is provided on the data recording layer. In addition, an image drawing layer is provided via an intermediate layer. In addition, a translucent layer and a protective layer are provided so that the drawn visible image can be viewed from the label surface. The total thickness is 1.2 mm.
The laser light that has passed through the objective lens passes through the data recording layer and reaches the image drawing layer, and heat is applied to the image drawing layer to cause a chemical change in the thermosensitive layer, thereby drawing a visible image. be able to.
FIG. 3B shows a CDR-DVDR mixed type layer structure. Here, data recording is performed on the CD side and image drawing is performed on the DVD side.
As shown in the figure, an image drawing substrate comprising a polycarbonate layer, an image drawing layer, and a semi-transparent layer is provided from the data surface side (objective lens side), and an intermediate layer with a groove, a data recording layer, a semi-transparent layer, and a protection A CD data recording substrate consisting of layers is provided. The two substrates are bonded together, and the total thickness is 1.2 mm.
The laser beam that has passed through the objective lens reaches the data recording layer of the CD through the image drawing layer, and can record data.

When such a single-sided dual-layer optical disc is used, data can be recorded and a visible image drawn without turning the disc over because writing and reading from both sides are possible from one side. . There is no need to add a new pickup, and the firmware of the optical disk recording apparatus can be changed.
In the second type optical disc, the predetermined address position of the data recording layer can be used as the mark indicating the reference angle position described above.
When data recording is performed in the CDR data recording layer, a disk identification number for identifying the disk is recorded in a program memory area (PMA) when data is recorded. Therefore, this disc identification number can be used as an identification number unique to the optical disc described above.

4). Identification number in the second type of optical disc The program memory area (PMA) is provided inside the lead-in area, and is a track number having start and stop times as contents information of the partially recorded disc. Information relating to recording on the disk, such as a disk identification number for identifying the disk, is encoded in the subcode Q channel. However, in the case of disc-at-once (DAO) recording in which the entire disc is recorded by a single write operation without interruption, the use of PMA is an option, and PMA is often not recorded.
FIG. 4A is a diagram showing a subcode structure, and FIG. 4B is a diagram showing a subcode Q channel frame structure.
As shown in FIG. 4A, one symbol constituted by 8 bits is recorded one by one in one frame, and one block is constituted by 98 frames. The first two frames, S0 and S1, are synchronous patterns, and the remaining 96 frames are P1 to P96, Q1 to Q96, R1 to R96, S1 to S96, T1 to T96, U1 to U96, V1 to V96, W1 to W96. Each bit constitutes a P channel to a W channel.
As shown in FIG. 4B, among the subcode Q channels consisting of the bits Q1 to Q96, Q1 to Q4 are controls, Q5 to Q8 are addresses, Q9 to Q80 are data, and Q81 to Q96 are CRC ( Cyclic Redundancy Code). The 72 bits Q9 to Q80 of the data are further divided into 9 portions of 8 bits each of TNO, POINT, MIN, SEC, FRAME, ZERO, PMIN, PSEC, and FRAME.

The standard stipulates that a BCD-encoded 6-digit disc identification number is recorded in the 24-bit portion of MIN, SEC, and FRAME in the first 10 frames of the subframe Q channel.
FIG. 5 is a diagram showing a state where a disc identification number is recorded in the subcode Q channel of PMA. As shown in this figure, the disc identification number “123456” is repeatedly recorded in the MIN, SEC, and FRAME portions of 1 to 10 frames. Note that “02” of C / A (control and address) indicates that a disc identification number is recorded in MIN, SEC and FRAME, and ZERO is a number (0 to 9) for labeling consecutive frames. ) Is recorded.
As described above, the PMA of the second type optical disc is recorded with a 6-digit disc identification number for identifying the disc when data is written other than disc at once (DAO) recording. ing.
Therefore, by using this disc identification number as an identification number unique to the above-mentioned disc, the step of recording the identification number when drawing a visible image becomes unnecessary.

5. Configuration of Optical Disc Recording Device FIG. 6 is a block diagram showing the configuration of an embodiment of an optical disc recording device capable of executing the visible image recording method on an optical disc of the present invention. With this configuration, data recording / reproduction and visible image recording can be performed on both the first type optical disc and the second type optical disc described above.
The optical disk recording apparatus according to the present embodiment includes an optical disk drive apparatus 10 that records and reproduces data on the optical disk 1 and forms a visible image, a host computer connected to the optical disk drive apparatus 10, a back-end apparatus, and the like. Host device 30. The host device 30 is loaded with an image editing program for editing a visible image to be added, and a control program for recording data and a visible image on the optical disc 1 and reproducing data from the optical disc 1. In addition, a storage unit is provided that stores image data representing the entire disk surface of the optical disk 1 on which a visible image is drawn and formed in association with the identification number of each optical disk. The optical disk drive device 10 may be provided with the functions of the host device 30.
As shown in the figure, the optical disk drive device 10 includes a spindle motor 11 that rotates the optical disk 1, an optical pickup 12, an RF amplifier 13, a servo circuit 14, a decoder 15, an address detection circuit 16, an HF signal detection circuit 17, and a control unit 18. An ALPC (Automatic Laser Power Control) circuit 19 for controlling laser power, a buffer memory 20, an encoder 21, a strategy circuit 22, and a laser driver 23 for driving a laser diode of the optical pickup 12 are provided.

The optical pickup 12 records and reproduces data by irradiating the optical disc 1 with laser light and forms a visible image. The return light receiving signal (RF signal modulated by EFM modulation or 8to16 modulation) when the optical disc 1 is irradiated with the laser light is amplified by the RF amplifier 13, and the servo circuit 14, decoder 15, address detection circuit 16, and HF signal detection circuit are amplified. 17 is supplied.
The servo circuit 14 performs rotation control of the spindle motor 11 and focus control and tracking control of the optical pickup 12 based on a signal from the RF amplifier 13 and a control signal from the control unit 18.
The decoder 15 demodulates the EFM-modulated or 8-to-16-modulated signal supplied from the RF amplifier 13 and outputs reproduction data. When the identification number is recorded in the inner information area 2 or the outer information area 3 by the direct recording shown in FIG. 2A, the identification number is reproduced by the decoder 15.
The address detection circuit 16 extracts wobble signal components from the signal supplied from the RF amplifier 13, decodes the ADIP (or ATIP), and detects address information (position address).
The HF signal detection circuit 17 detects the envelope of the RF signal supplied from the RF amplifier 13 and supplies it to the control unit 18. The region where the ADIP or barcode is not formed has high reflectance, and the region where they are formed has low reflectance. Therefore, from the state of the envelope of the signal output from the HF signal detection circuit 17, when the identification number is encoded by the presence or absence of ADIP as shown in FIG. When the barcode corresponding to the identification number is formed as shown in c), the identification number can be reproduced from the output of the HF signal detection circuit 17.

The buffer memory 20 stores information supplied from the host device 30, that is, data to be recorded on the optical disc 1 (recording data) and visible image data to be drawn on the optical disc 1.
The encoder 21 performs EFM modulation or 8to16 modulation on the recording data or visible image data read from the buffer memory 20 and outputs the modulated data to the strategy circuit 22.
The strategy circuit 22 performs time axis correction processing on the signal supplied from the encoder 21 and outputs the signal to the laser driver 23.
The laser driver 23 drives the laser diode of the optical pickup 12 based on the modulated signal supplied from the strategy circuit 22 and the control of the ALPC circuit 29.

As described above, the optical disk 1 is provided with the mark indicating the reference angular position, and the control unit 28 determines the reference angular position based on the output from the address detection circuit 26, the decoder 25, or the like. A mark indicating this is detected.
When a visible image is formed on the optical disc 1, the control unit 28 causes the encoder 21 to start encoding image data to be drawn around the circle at the timing when the mark indicating the reference angular position is detected. Start recording the corresponding visible image.
Thereby, a visible image can be formed from a predetermined position on the optical disc 1.

6). Operation of Optical Disc Recording Device When Using First Type Optical Disc As described above, in the optical disc recording device of the present invention, when a visible image is first recorded on the first type optical disc 1, An identification number unique to the optical disc 1 is recorded in the inner peripheral information area 2 or the outer peripheral information area 3 of the optical disc 1, and when a visible image is recorded on the optical disc 1, A unique identification number, image data of the optical disc 1 on which a visible image is formed, and link information that associates the image data with the identification number of the optical disc 1 are stored in the host device 30.
Here, various data used in the present invention are defined as follows.
B ^x ₀ : Identification number uniquely assigned to each optical disc x (information B)
C ^x _n : Image data of an optical disc in which a visible image is recorded (information C, stored in the host device 30)
D ^x _n : Link information that associates information B and information C (information D, stored in host device 30)
G: Image data in the image data C ^x _n C ′: Image data to be added by the user
B0-exist: Flag indicating the presence / absence of an identification number recorded on the optical disc 1 (“0”: None, “1”: Present)
Here, n indicates the number of times of additional recording, n = 0 indicates a state where the initial recording is completed, n = 1 indicates a state where the first additional recording is completed, and n = k indicates a state where the kth additional recording is completed. ing.

FIG. 7 is a diagram showing examples of such information B (identification number), information C (image data of an optical disc on which a visible image is recorded), and information D (link information).
(1) in FIG. 7 shows the identification number, the image data of the optical disc on which the visible image is recorded, and the link information after the first visible image is recorded on the first optical disc (x = 1). In the example shown in this figure, the first identification number B ¹ ₀ disk "AABBCCDD", image data C ¹ ₀ of the disk a visible image is recorded entitled "picture1.bmp" file, associate these The link information is D ¹ ₀ (B ¹ ₀ , C ¹ ₀ ).
(2) of FIG. 7 shows each data after the first additional recording is performed on the first optical disc. Since the optical disc identification number is recorded on the optical disc only at the first recording time, B ¹ ₀ is unchanged. The image data C ¹¹ after the _{first addition} is stored with the file name “picture2.bmp”, and the link information for associating them is D ¹ ₁ (B ¹ ₀ , C ¹ ₁ ). Has been.
(3) in FIG. 7 shows an example of each data when a visible image is recorded for the first time on the second optical disk (x = 2). In the example shown in this figure, the identification number B ² ₀ is set to "ACEGIKMO". In addition, here is assumed to have recorded the same visible image and the first time recording to the first optical disc to the second disc, the image data is the same as the C ¹ ₀ "picture1.bmp" link The information is D ² ₀ (B ² ₀ , C ¹ ₀ ).
(4) in FIG. 7 shows an example of the data when the first recorded a visible image on the third optical disc (x = 3), the identification number B ³ ₀ of the optical disk is set to "01234567" . Then, the same visible image as the visible image after the first additional recording on the first optical disc is recorded on the third optical disc, and the image data is the same as “picture2.bmp” as in C ¹ ₁ The link information is D ³ ₀ (B ³ ₀ , C ¹ ₁ ).
The file which is the information C may be a single layer data, a multilayer overlay for each image data, or a combination of image data and position information.

  Thus, the identification information (information B) of each optical disc, the image data (information C) of each optical disc on which a visible image is recorded, and the identification information of each optical disc and the optical disc on which the visible image is recorded on the host device side. Link information (information D) for associating with image data is stored. Thus, the existing image of the optical disc can be displayed on the display screen by reading the image data of the optical disc on which the visible image is recorded with reference to the link information from the identification number of the optical disc. Also, since the identification number and the image data are associated and shared by the link information, it is necessary when forming the same visible image on a plurality of optical disks as compared with the case of storing the image data corresponding to each optical disk. Storage capacity can be reduced.

FIG. 8 is a flowchart showing the flow of processing in the optical disk recording apparatus of the present invention when the first type of optical disk is used. In FIG. 8, in order to avoid complication, the description of the subscript x in the information B ^x ₀ , C ^x _n , and D ^x _n is omitted.
When the optical disc 1 is inserted into the optical disc drive device 10, the optical disc drive device 10 determines whether or not the disc is a first type optical disc capable of recording a visible image, and a visible image drawing compatible medium. If not, end in error. When the optical disc can record a visible image, the flowchart of FIG. 8 is executed.
First, the inner circumference information area 2 or the outer circumference information area 3 of the optical disc 1 is read to determine whether or not the identification information (information B ^x ₀ ) is recorded (step S1).
When the information B ^x ₀ is not recorded, the flag B0-exist is set to “0” (step S2).
When the information B ^x ₀ is recorded, the flag B 0 -exist is set to “1” (step S3), and the information B ^x ₀ is reproduced (step S4).
Then, it transmits information B ^x ₀ when the flag B0-The exist and information B ^x ₀ is reproduced in the host device 30 (step S5).

When the host device 30 receives information such as the flag B0-exist from the optical disk drive device 10 (step S11), the host device 30 determines whether the received flag B0-exist is “0” or “1”. .
When the flag B0-exist is “0”, an unrecorded medium is inserted and a visible image is recorded for the first time (case 1), and the process proceeds to step S24.
When the flag B0-exist is “1”, it is determined whether or not the information D ^x _n corresponding to the simultaneously received information B ^x ₀ (identification number) is stored in the own host device 30 (step S13). If stored, it becomes a case where a visible image is additionally written using the same host device (case 2), and the process proceeds to step S15. If not saved, it becomes a case where the host device is being changed and additional writing is to be performed (case 3), and the process proceeds to step S14. Note that the determination in step S13 may be collation with information B ^x ₀ stored in the host device 30.
Hereinafter, each case will be described.

6-1. Case 1 (when a visible image is recorded for the first time on an optical disk)
When a non-recorded medium is inserted and a visible image is recorded for the first time, information B ^x ₀ does not exist on the disc, and information B ^x ₀ , C ^x ₀ and D ^x ₀ do not exist on the host device 30. Therefore, the existing visible image is not displayed on the screen of the image editing program for editing the visible image (step S24), and the user newly attaches the image data G and edits the position, size, shape, and the like. Alternatively, image data is edited using the existing information C, and an image to be recorded on the optical disc 1 is drawn (step S25).
The image data edited in this way is stored in the memory of the host device 30 as information C ^x ₀ corresponding to the optical disk (step S26).
The stored image data C ^x ₀ is set as image data C ′ for drawing a visible image to be additionally recorded on the optical disc 1 (step S27).
Next, an identification number B ^x ₀ assigned to the optical disc 1 is created (step S28). For example, the identification number is created based on a random number generated using the current time at that time as a seed.
Then, the information C ^x ₀ created in step S26 and the information B ^x ₀ created in step S28 are stored in a storage unit such as a hard disk device of the host device 30 (step S29).
Next, link information D ^x ₀ that associates the information B ^x ₀ with the information C ^x ₀ is created and stored in the host device 30 (step S30).
Then, the information B ^x ₀ is transmitted to the optical disc drive device 10 (step S31).
The optical disc drive apparatus 10 shows the information B ^x ₀ received from the host device 30 in the inner circumference side information area 2 or the outer circumference side information area 3 of the optical disc 1 as shown in (a) to (c) of FIG. Recording is performed by either method (step S32).
Next, the host device 30 transmits image data C ′ for drawing a visible image to be additionally recorded on the optical disc 1 to the optical disc drive device 10 (step S22), and the optical disc drive device 10 sends the corresponding visible image. Is recorded on the optical disc 1 (step S23).

6-2. Case 2 (When adding the visible image using the same host device)
Next, a case where a visible image is additionally recorded using the same host device 30 will be described.
In this case, the information B ^x ₀ can be recognized by the optical disk drive device 10, and the information D ^x _n exists in the host device 30 (YES in step S13). For example, in the case of performing the second drawing, that is, the first additional recording, the initial recording has already been performed, so that the host device 30 stores the information B ^x ₀ , C ^x ₀ and the generated information at that time. D ^x ₀ (B ^x ₀ , C ^x ₀ ) is stored.
Therefore, the information C ^x _n corresponding to the information B ^x ₀ is read from the storage unit using the information D ^x _n (step S15), and the editing screen of the image editing program for editing the visible image recorded on the optical disc 1 is displayed. The information C ^x _n (image data of the optical disc 1 on which a visible image has already been recorded) is displayed (step S16). Thereby, the existing image recorded on the optical disc 1 can be reproduced.
Using this screen, the user can add a new image G to be added to the image data C ^x _n or synthesize it with other information C stored in the host device 30 to add a visible image. The image is edited (step S17).
Then, the edited image data C ^x _{n + 1} is temporarily recorded in the memory of the host device 30 (step S18).

Next, a difference C ′ = C ^x _{n + 1} −C ^x _n between the created information C ^x _{n + 1} and the stored information C ^x _n is used as image data of a visible image to be additionally recorded on the optical disc 1. Extract (step S19). That is, by calculating the difference between each pixel of the image data C ^x _{n + 1} to which a new visible image is added and each pixel of the existing image data C ^x _n , the image data C of the visible image that the user wants to add is obtained. Extract '.
Then, the created information C ^x _{n + 1} is stored in the host device 30 (step S20). At this time, the image data C ^x _n may be used for another optical disc, and is stored as it is.
Next, create the identification number B ^x ₀ and the image data created in the step S18 C ^x _{n + 1} and the link associating the information _{^{D x n + 1 (B x}} 0, C x n + 1), and stored which was linked information overwriting D ^x _n (step S21). In this way, the link information D ^x _n of the previous generation is lost, and only the latest link information D ^x _{n + 1} is stored. Thus, when the optical disk with the identification number B ^x ₀ is inserted next time, the latest image data C ^x _{n + 1 of the} optical disk is read based on the link information D ^x _{n + 1} .
Next, the image data C ′ to be additionally recorded extracted in the step S19 is transmitted to the optical disc drive device 10 (step S22), and the optical disc drive device 10 additionally appends a visible image to the optical disc 1 based on the image data. (Step S23).

6-3. Case 3 (When adding a visible image by changing the host device)
Next, a description will be given of a case where additional writing is attempted by changing the host device.
In this case, the information B ^x ₀ on the disc is reproduced and the information B ^x ₀ is received from the drive, but the information B ^x ₀ or the information D ^x _n corresponding to the information B ^x ₀ does not exist in the host device ( Step S13 is NO). Therefore, it is not possible to load the image data of the corresponding information C ^x _n, it is impossible to reproduce the existing image on the disk on the screen. Therefore, additional writing is impossible, a message warning that is displayed, and the process is terminated (step S14).

7). Operation of optical disc recording apparatus when using second type optical disc As described above, when using the second type optical disc, disc identification recorded in the PMA of the second type optical disc is used. The number is used as the identification number (information B) described above.
FIG. 9 is a flowchart showing the flow of processing in the optical disk recording apparatus of the present invention when the second type of optical disk is used.
When the process of drawing a visible image on the second type of optical disk is started, first, the host device 30 requests the optical disk drive device 10 to acquire information B on the inserted optical disk (step S51).
In response to this, the optical disc drive apparatus 10 reproduces the PMA area recorded in the data layer of the inserted second type optical disc (step S52).
And it is determined whether PMA exists (step S53).
When the inserted second type optical disk is completely unused and when the optical disk is recorded on a disk at once, there is no PMA area (NO in step S53). The drive device 10 returns an error signal to the host device 30 (step S54). In response to this, the host device 30 displays a warning to the user (step S55) and ends the process. For example, a warning with a content such as “There is a possibility that additional writing may not be performed properly next time. Record data after recording data” is given to the user. Alternatively, the user can select whether or not to force image recording, and when it is selected to force the image recording, a process of creating a PMA area by recording a small amount of dummy data in the data layer is performed. Good.

On the other hand, when the PMA exists (YES in step S53), the optical disc drive apparatus 10 acquires the disc identification number (information B) recorded in the PMA and transfers it to the host device 30 (step S56).
The host device 30 determines whether or not the link information D (D ^x _n ) including the information B (B ^x ₀ ) transferred from the optical disc drive apparatus 10 is stored in the own device (step S57).
As a result, if the link information D ^x _n including the information B is stored (YES in step S57), the case 2 in FIG. 8 (when a visible image is additionally written using the same host device) is performed. The same processing as S15 to S21 is executed (step S58). That is, the image data C ^x _n corresponding to the information B is read from the storage unit using the information D ^x _n , the image data C ^x _n is displayed on the editing screen of the image editing program, and an image is added by the user. The new image data C ^x _{n + 1} is obtained as a result of the editing process, and difference data is extracted as visible image data C ′ to be additionally recorded on the optical disc (C ′ = C ^x _{n + 1} −C). ^x _n), to save the new image data C ^x _{n + 1,} the information B ^x ₀ and the image data C ^x _{n + 1} and the link information D ^x _{n + 1} that associates _{^{(B x 0, C x n}} + 1) The link information D ^x _n that has been created and saved is overwritten and saved.
On the other hand, when the link information D ^x _n including the information B is not stored (NO in step S57), the processes in steps S24 to S27, S29, and S30 in case 1 (when a visible image is recorded for the first time) in FIG. Processing is executed (step S59). That is, in this case, the data is recorded and the PMA is recorded, but the visible image is not drawn. Therefore, the blank optical disk surface is displayed on the editing screen in the image editing program, and the image is added by the user. The image data C ^x ₀ obtained as a result of the editing process is obtained, and the image data C ^x ₀ is set as visible image data C ′ to be additionally recorded on the optical disc (C ′ = C ^x ₀ ). create a C ^x ₀ to associate link information _{^{D x 0 (B x 0,}} C x 0), stored in the storage unit.
After executing step S58 or S59, the host device 30 transmits visible image data C ′ to be added to the optical disc to the optical disc drive device 10 (step S60), and the optical disc drive device 10 sends the data C ′ to the first optical disc. Recording is performed on the image drawing layer of the two types of optical disks (step S61).
In this way, a visible image can be recorded on the second type optical disc.

It is a figure which shows the structure of one Embodiment of the 1st type optical disk used in this invention. It is a figure for demonstrating the method of recording an identification number on the 1st type optical disk, (a) is recording an identification number directly in a recording area, (b) is a track | truck of a recording area for every predetermined length. When the division is recorded as 1 bit, (c) shows the case where the barcode corresponding to the identification number is formed in the recording area by the visible image recording technique. 2A and 2B are diagrams showing a layer structure of a second type optical disc used in the present invention, FIG. 1A is a diagram showing a layer structure of a CDR type dual layer optical disc, and FIG. 2B is a CDR-DVDR mixed type dual layer optical disc. FIG. It is a figure for demonstrating a subcode, (a) is a figure which shows the structure of a subcode, (b) is a figure which shows the frame structure of a subcode Q channel. It is a figure which shows a mode that the disc identification number is recorded on the subcode Q channel of PMA. It is a block diagram which shows the structure of one Embodiment of the optical disk recording device of this invention. It is a figure for demonstrating the identification number uniquely given to each optical disk, image data, and link information. It is a flowchart which shows the flow of a process in the optical disk recording device of this invention when using a 1st type optical disk. It is a flowchart which shows the flow of a process in the optical disk recording device of this invention when using a 2nd type optical disk.

Explanation of symbols

  1: optical disc, 2: inner circumference information area, 3: outer circumference information area, 4: visible image recording area, 10: optical disc drive device, 11: spindle motor, 12: optical pickup, 13: RF amplifier, 14: servo Circuit: 15: Decoder, 16: Address detection circuit, 17: HF signal detection circuit, 18: Control unit, 19: ALPC circuit, 20: Buffer memory, 21: Encoder, 22: Strategy circuit, 23: Laser driver, 30: Host device

Claims (18)

A visible image recording method for forming a visible image edited using a host device on an optical disk using a laser,
Storing in the host device image data of an optical disc on which a visible image edited by the editing step is formed, and link information associating the image data with an identification number unique to the optical disc;
Reading the identification number from the optical disc;
Based on the read identification number and the link information, reading the latest image data of the optical disc stored in the host device, and displaying it on the editing screen;
Editing the image data displayed on the editing screen and image data corresponding to a visible image newly added to the optical disc on the editing screen;
Forming a visible image on the optical disc that is newly added to the optical disc in response to editing on the editing screen.   2. The visible image recording method according to claim 1, further comprising a step of recording an identification number unique to the optical disc in a predetermined area of the optical disc when a visible image is first formed on the optical disc using a laser. Method. The optical disc has a visible image recording area for forming a visible image, and a recording having a plurality of tracks formed in a spiral shape by a method of previously carving a groove on at least one of the innermost peripheral portion and the outermost peripheral portion of the disc. An area is provided,
The groove is not formed in the visible image recording area,
The method for recording a visible image on an optical disk according to claim 2, wherein the recording area is an area in which the identification number is recorded.   4. The step of recording the identification number is a step of encoding the identification number by a predetermined encoding method and alternately forming marks and spaces in tracks of the recording area according to the code. The visible image recording method to the optical disk of description.   The step of recording the identification number is such that each bit of the identification number is assigned to a section obtained by dividing the track of the recording area by a predetermined length, and the section can be optically differentiated according to the value of the bit. 4. The method for recording a visible image on an optical disc according to claim 3, wherein the visible image is recorded on the optical disc.   4. The method for recording a visible image on an optical disc according to claim 3, wherein the step of recording the identification number is a step of forming a bar code corresponding to the identification number radially in the recording area.   2. The visible image recording method on an optical disc according to claim 1, wherein the identification number is a disc identification number recorded in a program memory area of the optical disc.   2. The method for recording a visible image on an optical disc according to claim 1, wherein, in the reading step, a warning is displayed when the link information related to the identification number read from the optical disc is not stored.   In the storing step, after storing link information for associating the image data with the identification number in the host device, the link information corresponding to the identification number of the optical disk stored before is erased. The visible image recording method on an optical disk according to claim 1. An optical disk recording apparatus capable of forming a visible image using a laser on an optical disk,
When forming a visible image using a laser on an optical disk, a storage unit stores image data of the optical disk on which the visible image is formed, and link information that associates the image data with the identification number unique to the optical disk Means for storing
Means for reading the identification number from the optical disc;
Means for reading the latest image data of the optical disc based on the read identification number and the link information, and displaying it on an editing screen for forming a visible image on the optical disc;
Means for forming a visible image on the optical disc that is newly added to the optical disc in response to editing on the editing screen;
An optical disc recording apparatus comprising:   11. The optical disk recording apparatus according to claim 10, further comprising means for recording an identification number unique to the optical disk in a predetermined area of the optical disk when a visible image is first formed on the optical disk. The optical disc has a visible image recording area for forming a visible image, and a recording composed of a plurality of tracks formed in a spiral shape by a method of previously engraving a groove on at least one of the innermost peripheral portion and the outermost peripheral portion of the disc. An area is provided,
The groove is not formed in the visible image recording area,
The optical disk recording apparatus according to claim 11, wherein the recording area is an area in which the identification number is recorded.   13. The means for recording the identification number is means for encoding the identification number by a predetermined encoding method, and alternately forming marks and spaces in tracks of the recording area according to the code. The optical disk recording apparatus described.   The means for recording the identification number can assign each code bit of the identification number to a section obtained by dividing the track of the recording area by a predetermined length, and the section can be optically differentiated according to the value of the bit. 13. The optical disk recording apparatus according to claim 12, wherein the optical disk recording apparatus is a means for forming a state.   13. The optical disk recording apparatus according to claim 12, wherein the means for recording the identification number is a means for forming a barcode corresponding to the identification number in the recording area in a radial pattern.   11. The optical disc recording apparatus according to claim 10, wherein the identification number is a disc identification number recorded in a program memory area of the optical disc.   The reading means has a function of displaying a warning when the link information related to the read identification number read from the optical disc is not stored. 10. The optical disk recording device according to 10.   The means for storing erases the link information corresponding to the identification number of the optical disk previously stored when the link information for associating the image data with the identification number is stored in the storage unit. The optical disk recording apparatus according to claim 10, wherein there is an optical disk recording apparatus.

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