JP2007042260A - Method of recording visible image on optical disk, and optical disk recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of easily adding another visible image at a correct position on an optical disk which is capable of recording a visible image by using a laser beam, and an optical disk recording device thereof. <P>SOLUTION: A visible image created by using the image editing software in a host 40 is recorded on an optical disk 1 loaded in an optical disk drive 20. When recording a visible image on the optical disk 1 for the first time, the ID number unique to each disk is recorded in the predetermined area on the disk 1. When recording a visible image on the disk 1, the image area information expressing the position of the visible image and its size is recorded in the predetermined area of the disk 1, and the image data of the disk 1 recorded with this visible image and the link information correlating this image data and its disk ID are stored in the host 40. When the optical disk 1 is loaded, the image data of the disk saved in the host 40 and the existing visible image reproduced from the image area information recorded on the disk 1 are displayed on the editing screen of the visible image. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a visible image recording method and an optical disc recording apparatus for an optical disc, in which a visible image is formed on a disc surface of an optical disc such as CD-R / RW, DVD + R / RW, and DVD-R / RW using a laser. 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, a visible image recording method and an optical disk recording apparatus for an optical disk according to the present invention provide a unique identification of an optical disk in a predetermined area of the optical disk when a visible image is drawn and recorded on the optical disk. Number and image area information that can represent the position, shape and size of the area occupied by the visible image on the disk surface, the image data of the optical disk on which the visible image is formed on the host device side, and the image Link information for associating data with the identification number of the optical disk is stored. At the time of additional recording, the identification number on the optical disk is read, and when the image data of the optical disk corresponding to the identification number is stored in the host device, the visible image already formed on the optical disk is displayed on the editing screen. The main feature is that it was reproduced.
When the link information corresponding to the identification number read from the optical disk is not stored in the host device, the area of the visible image formed on the optical disk based on the image area information read from the optical disk Is reproduced.
Further, when the image area information calculated from the stored image data of the optical disc and the image area information read from the optical disc do not match, the visible area reproduced based on the image area information read from the optical disc is reproduced. The image area is displayed.
Here, 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 and the image area information are provided in the recording area. Is recorded. The visible image is formed in a visible image recording area having a flat mirror surface without a guide groove.
The optical disc may be a single-sided dual-layer optical disc having a visible image recording layer and a data recording layer. In this case, the identification number and the image area information are recorded on the data recording layer.

According to the visible image recording method and the optical disc apparatus of the present invention, when a visible image is added to the optical disc for drawing and recording, it is stored in the host device based on the identification number recorded on the optical disc. The visible image formed on the optical disk can be accurately reproduced using the image data. The user can easily add a desired image to an accurate position on the disc using a screen on which the existing image is reproduced.
Further, when a visible image is additionally recorded on the optical disc using a host device different from the host device used for drawing and recording the visible image on the optical disc, the image area information recorded on the optical disc is used to record the visible image on the disc. The area of the visible image drawn and recorded in the can be reproduced.
Further, when a visible image is additionally recorded on the optical disc, the image area information recorded on the optical disc is recorded even when a visible image is additionally recorded using another host device after the previous addition on the host device. Can be used to reproduce the position and shape of the visible image recorded on the disk surface.
Then, the host device processes the information and sends it to the optical disk drive device, so that a visible image can be added at an accurate position on the disk.

There are roughly two types of optical disks used in the present invention. First, two types of optical discs capable of recording a visible image used in the present invention will be described. Hereinafter, image area information recorded on the optical disc of the present invention, identification numbers and image areas for the two types of optical discs will be described. The information recording method, the configuration of the optical disk recording apparatus of the present invention, and the operation of the optical disk recording apparatus of the present invention will be described in this 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 identification number and the image area information are stored in the inner circumference information area 2 or the outer circumference 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.

2. 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 single-sided dual-layer disc (dual layer disc) in which a data recording layer and a visible image recording layer (image drawing layer) are formed on one disc, and the focus position of the lens is changed. By doing this, both layers (data recording layer and image drawing layer) can be accessed from one side.

As such a dual layer disc, there are a CDR type, a DVDR type, a mixed type of CDR-DVDR, and the like.
FIG. 2 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 disk, and (b) is a DVDR type dual layer disk. Layer structure (c) shows a layer structure of a dual layer disc of a mixed CDR-DVDR type.
As shown in FIG. 2A, a CDR type dual layer disc 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, a visible image recording layer (image drawing layer) is provided via an intermediate layer. Further, a translucent layer and a protective layer are provided on the image drawing layer 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 the translucent layer and reaches the image drawing layer, and heat is applied to the image drawing layer to cause a chemical change in the heat sensitive layer and change in color. An image can be drawn.

FIG. 2B shows a layer structure of a DVDR type dual layer disc.
As shown in the figure, a DVD data recording substrate comprising a polycarbonate layer with grooves, a data recording layer, and a semi-transparent layer is provided in order from the data surface side, and an image drawing layer, a semi-transparent layer, and An image drawing substrate made of a polycarbonate layer 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 image drawing layer through the data recording layer and the semi-transparent layer, and can draw a visible image.
FIG. 2C shows a mixed layer structure of CDR-DVDR. As a mixed type of CDR-DVDR, there are a type in which data recording is performed on the CD side and image drawing is performed on the DVD side, and a type in which data recording is performed on the DVD side and image drawing is performed on the CD side. In the figure, 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 protective layer are provided. A CD data recording substrate consisting of layers is provided. The two substrates are bonded together, and the total thickness is 1.2 mm.

When using such a single-sided, dual-layer optical disc, it is possible to read / write data from / to both layers by simply changing the focus position of the laser beam, so data can be read without setting the disc upside down. Recording / playback and visible image drawing can be performed. In addition, since it is a multi-session disc that can be additionally recorded by the track-at-once method or the session-at-once method, the image area information can be recorded in the main data of the program area of the data recording layer. It is not necessary to add new hardware in order to use the second type of optical disc, and only the firmware of the optical disc recording apparatus is changed.
In the second type of optical disc, the predetermined address position of the data recording layer can be a mark indicating the reference angle position described above.

In the present invention, when the first type optical disc is used, when the first visible image is recorded in the visible image recording area 4, the inner circumference side information area 2 or the outer circumference side information area 3 described above is used. When a unique identification number is recorded on the optical disc 1 and a visible image is recorded in the visible image recording area 4, it is recorded on the optical disc 1 in the inner peripheral side information area 2 or the outer peripheral side information area 3. Image area information that can represent the position, shape and size of the area occupied by the visible image is recorded. When the second type optical disk is used, when a visible image is recorded on the image drawing layer (visible image recording layer), an identification unique to the optical disk is recorded in the program area of the data recording layer of the disk. The number and image area information are recorded.
Then, on the host device side, image data that can represent the entire disk surface of the optical disk 1 on which a visible image is drawn and recorded, and information (link information) that associates the image data with an identification number unique to the optical disk 1 I remember it.
As a result, when a new visible image is added and recorded in the visible image recording area 4 or the image drawing layer of the optical disc 1 later, the identification number is read from the optical disc 1 and the identification number is associated with the host device. When the image data to be stored is stored, the image data is displayed on the editing screen of the image editing program, and the visible image already recorded on the optical disk is reproduced, so that the visible image of any shape can be converted into the existing image. It can be freely arranged and recorded without overlapping the visible image. Further, even when image data is not stored in the host device, it is possible to reproduce and display a visible image area already recorded on the optical disk using the image area information, so that a new visible image can be displayed. It is possible to freely arrange and record without overlapping with existing visible images.

3. Image Area Information Next, image area information that can represent the position, shape, and size of the area occupied by the recorded visible image will be described.
In the present invention, the position, shape and size of the visible image are expressed using information indicating the position of the point included in the recorded visible image and information indicating the shape of the visible image. To be able to.
The position of the point is expressed using, for example, a polar coordinate system in which the center of the optical disc is the origin and the radius corresponding to the reference angular position is the reference line (zero angle position). In the following description, it is assumed that the angle increases clockwise from the reference line.

3-1. In the case where a visible image region is captured as a rectangle FIG. 3A is a diagram for explaining image region information when a visible image is captured as a rectangle.
When a visible image is formed in the visible image recording area 4 or the image drawing layer of the optical disc 1, an image including a picture or a character to be formed using an image editing program is created or selected on a host computer, A visible image is formed by controlling the power of the laser beam according to the image data.
In general, image data including pictures and characters (hereinafter referred to as “pictures”) is in the form of a bitmap (.bmp) or the like, and its outer shape is usually a square or a rectangle. Therefore, as shown in FIG. 3A, when one side of the square or rectangle 6 is arranged in parallel to the reference line 5, the point A of the image located closest to the inner circumference in the polar coordinate system is shown. The coordinates are (r1, θ1), and the coordinates of the point B located on the outermost side are (r2, θ2). The points C and D in the figure can be obtained by calculation if the coordinates of the points A and B are known. Thereby, the size of the visible image can also be obtained.
In addition to the coordinate information, information indicating that the visible image is captured as a square or a rectangle is also recorded. That is, the image area information is in the form of (R, A (r1, θ1), B (r2, θ2)). Here, “R” means “Rectangle”.
The radius information “r2” of the coordinate B located at the outermost peripheral portion may exceed the radius of the optical disc. Depending on the arrangement position of the visible image, the point A and the point D or the point A and the point C may be located at the same radial position. In such a case, the smaller angle is adopted. At that time, similarly, the point B and the point C or the point B and the point D are located at the same radial position, and therefore the larger angle value is adopted.

  Thereafter, it is assumed that the visible image 7 shown in FIG. At this time, when the first type of optical disk is used, the image area information (R, E (r3, θ3), F (r4, θ4)) corresponding to the new visible image area 7 is stored in the above-mentioned manner. The information is additionally recorded in the peripheral information area 2 or the peripheral information area 3. Further, when using the second type optical disc, image area information including both the visible image area drawn before the additional recording and the additional visible image 7 area, that is, Image area information corresponding to the visible image drawn on the disk surface after the additional recording is recorded in the data recording layer of the second type optical disk. Thereafter, this process is repeated each time a visible image is added to the disk surface.

  It should be noted that the visible image region can be regarded as a circle. In this case, the position of the visible image is expressed by three pieces of information: the polar coordinates of the center point A of the circle, the radius B (r2) of the circle, and the information C indicating the circular shape. That is, (C, A (r1, θ1), B (r2, θ1)) may be used. Here, “C” is information meaning “Circle”. Note that the angle information θ1 of the B position may be omitted.

3-2. Case of Visible Image Region as Fan Shape FIG. 3B is a diagram for explaining a case where a visible image is taken as a fan shape. Here, a shape surrounded by two arcs having the same center angle but different radii and two radial straight lines connecting the end points of the two arcs is called a sector.
Images such as characters are often arranged in the circumferential direction according to the disc shape depending on the application. In this case, the area occupied by the visible image can be expressed without waste by capturing the visible image area as a sector rather than capturing the visible image area as a rectangle as described above.
As shown in FIG. 3B, the innermost radius of the sector 8 (region surrounded by the arc AC, the straight line CB, the arc BD, and the straight line DA) 8 including the visible image “VWXYZ” is r1, and the outermost radius is Further, r2 is assumed to be the forward angle when viewed from the fan-shaped reference line 5 in the clockwise direction, and θ1 is the rear angle. The polar coordinates of A, B, C, and D which are the vertices of the sector shape at this time can be easily obtained, and the size of the sector shape can also be obtained.
As in the case described above, information that the image is captured as a sector is also recorded. For example, the information is in the form of (S, A, B). Here, “S” means “Sector”.

  Note that the pattern included in the image data area does not necessarily exist over the entire area of the image data. In this case, in the above-described method, the visible image region is captured large although the pattern is small. Therefore, the data of the part having no pattern in the image data is treated as null and excluded from the object to be recorded as the visible image area. Then, only the part of the pattern in the image data is extracted, the part is regarded as a visible image such as a rectangle or a sector, and the image area information of the image is created, thereby creating accurate image area information without waste. can do.

3-3. When faithfully reproducing a pattern in image data In the above case, the region of the visible image is captured as a rectangle, a circle, or a sector. Next, a description will be given of a case where a visible image region is captured as close as possible to an actual pattern shape.
FIG. 3C shows a case where the pattern in the image data is captured as a polygon.
First, as described above, data in a portion where no pattern exists in the image data is null and excluded from the object of the image area information.
Next, a plurality of points that can determine the position, shape and size of the pattern are determined. In general, if there are three plane figures, the shape can be determined. However, in the case of a complicated figure, it is necessary to increase the number of coordinate points.
As an example, in the case of the star 9 as shown in FIG. 3C, 10 coordinate points A to J may be adopted. Of course, the more coordinate points, the more accurately the shape of the pattern can be reproduced. Therefore, at least three or more coordinate points around a certain pattern are determined, and all of them are included in the image area information of the visible image. And the information showing a shape is also recorded similarly to the case of (a) and (b) of the above-mentioned FIG. That is, the representation of the image area information is, for example, (F, A (r1, θ1), B (r2, θ2), C (r3, θ3),..., J (r10, θ10)). Here, “F” is information meaning “Free”.

FIG. 3D is a diagram illustrating another method for bringing the visible image region as close as possible to the shape of the pattern.
As in the case described above, only a region having a pattern is extracted from the image data, and the region is divided into a certain radius length (for example, 5 mm) and divided in the circumferential direction. The shape after division is regarded as a sector, and the pattern is expressed by a plurality of sectors.
In the example shown in FIG. 3D, first, the extracted picture 10 is divided by arcs having different radii r1, r2,..., R5 by predetermined values, and in each region sandwiched between adjacent arcs. The sector shapes 11, 12, 13, and 14 including the pattern 14 are determined. Then, the image area information similar to the case of FIG. 3B that expresses each of the sectors 11 to 14 is set as the image area information representing the picture 10.
The finer the difference in radius length for dividing the pattern, the closer it is to the actual shape of the pattern.

4). Recording method of identification number and image area information in first type optical disc Next, the identification number and the image area information are actually used for a predetermined area (inner information area 2 or outer circumference side of the first type optical disk 1). A method of recording in the side information area 3) will be described.
As described above, in the first type of optical disc, the identification number and the image area information are formed with guide grooves in the inner peripheral side information area 2 on the inner peripheral portion of the disc or the outer peripheral side information area 3 on the outer peripheral portion of the disc. Recorded in the area within the range.

4-1. Direct recording As shown in FIG. 4 (a), EFM (Eight to Eight) using the above-described identification number and image area information in the inner circumference information area 2 or the outer circumference information area 3 in the CD-R / RW. Fourteen Modulation) encoding or 8to16 encoding used in DVD recording is used for recording. That is, recording is performed by alternately forming marks and spaces on each track in accordance with the identification number encoded by EFM encoding or 8to16 encoding and each code of the image area information. This can be performed in the same manner as in normal CD recording or DVD recording.
When reproducing the identification number and image area information, CD decoding or DVD decoding similar to normal CD or DVD playback may be performed.

4-2. 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, an identification number and one bit of the image area information are allocated and recorded with a division obtained by dividing the track of the inner circumference side information area 2 or the outer circumference side information area 3 for each predetermined length. For example, 1 bit is assigned to a predetermined length such as 1 ADIP word, 1 ECC (Error Correcting Code) block, 1 subcode frame, and the like.
FIG. 4B shows an example in which the mark length is 1 ADIP word and this is associated with the identification number and 1 bit of the “image area information”. When the bit is “1”, a random pattern having a length of 1 ADIP word is recorded, and when the bit is “0”, the identification number and the image area information are recorded by not recording the random pattern.
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 and the image area information can be read out without any problem even if the recording state is somewhat poor. Note that the magnitude relationship of the reflectance may be reversed.

4-3. Recorded as a barcode formed using a visible image drawing technique FIG. 4C shows a case where a barcode corresponding to an identification number and image area information is formed. A barcode corresponding to the identification number and the image area information 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.

5. Recording method of identification number and image area information in second type optical disc The second type optical disc can additionally record data by a track at once method or a session at once method. When the second type optical disc is used as a multi-session disc, the above-described image area information can be recorded as main data in the program area.
FIG. 5 is a diagram for explaining how image area information is recorded on a multi-session disc. In the example shown in this figure, session 1 is composed of lead-in LIA1, program area PA1 and lead-out LOA1, session 2 is composed of lead-in LIA2, program area PA2, and lead-out LOA2, and lead-in LIA3 and program area PA3. Session 3 consisting of lead-out LOA3 is recorded. Data is recorded in the program area PA1 of the session 1 and the program area PA3 of the session 3, and the image area information of the drawn image is recorded in the program area PA2 of the session 2.
As described above, the image area information can be recorded as the main data of the program area on the second type optical disc.

FIG. 6A shows an example of the definition of data bytes constituting one sector (2048 bytes) when image area information is recorded as main data of the program area as described above.
In the example shown in this figure, the 0th to 3rd bytes are an identification code indicating image area information, the 4th to 7th bytes are a disc unique identification code which is the disc identification number, and the 8th to 11th bytes are Is information indicating the number of times of additional writing, information indicating the shape of the image in the 12th to 15th bytes, first polar coordinate information in the 16th to 19th bytes, and second polar coordinate in the 20th to 23rd bytes Information, hereinafter, information necessary to represent the drawn visible image area is recorded in order. It should be noted that the above data is repeatedly recorded according to a standardized format so that the minimum number of sectors is required. For example, when 16 sectors are required, the above 1 sector is repeatedly recorded 16 times.
FIG. 6B is a diagram showing a specific example in which image area information is recorded. The example shown in this figure shows a case where the image area information R (A, B) and R (C, D) are obtained by capturing the visible image area described in 3-1, as a rectangle.
R (Rectangle) indicating a rectangle as an image shape is recorded in the 12th to 15th bytes, the coordinate information A (r1, θ1) of the first point, and the 20th to 23rd bytes in the 16th to 19th bytes. In the byte, coordinate information B (r2, θ2) of the second point is recorded. Further, the coordinate information C (r3, θ3) of the first point of the second rectangle is recorded in the 20th to 23rd bytes, and the coordinate information D ((2) of the second point is recorded in the 24th to 27th bytes. r4, θ4) are recorded. In this example, since the information R indicating the shape of the image is the same, the recording of the information indicating the second rectangle is omitted, but may be recorded without being omitted.
As described above, when the second type of optical disk is used, the above-described image area information can be recorded in the program area of the data recording layer.

6). Configuration of Optical Disc Recording Device FIG. 7 is a block diagram showing a 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 of the present embodiment includes an optical disk drive apparatus 20 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 20, a back-end apparatus, and the like. Host device 40. The host device 40 is equipped 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, it has a storage unit for storing image data representing the entire disk surface of the optical disk 1 on which a visible image is drawn and formed. The optical disk drive device 20 may be provided with the function of the host device 40.
As shown in the figure, the optical disk drive device 20 includes a spindle motor 21 that rotates the optical disk 1, an optical pickup 22, an RF amplifier 23, a servo circuit 24, a decoder 25, an address detection circuit 26, an HF signal detection circuit 27, and a control unit 28. An ALPC (Automatic Laser Power Control) circuit 29 for controlling laser power, a buffer memory 30, an encoder 31, a strategy circuit 32, and a laser driver 33 for driving a laser diode of the optical pickup 22 are provided.

The optical pickup 22 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 23, and the servo circuit 24, the decoder 25, the address detection circuit 26, and the HF signal detection circuit. 27.
The servo circuit 24 performs rotation control of the spindle motor 21 and focus control and tracking control of the optical pickup 22 based on a signal from the RF amplifier 23 and a control signal from the control unit 28.
The decoder 25 demodulates the EFM modulated signal or 8to16 modulated signal supplied from the RF amplifier 23 and outputs reproduced data. The optical disc is the first type of optical disc, and the identification number and the image area information are recorded in the inner circumference information area 2 or the outer circumference information area 3 by the direct recording shown in FIG. When the recording is performed or when the identification number and image area information are recorded in a session of the second type optical disc, the decoder 25 reproduces the identification number and the image area information.
The address detection circuit 26 extracts wobble signal components from the signal supplied from the RF amplifier 23, decodes the ADIP (or ATIP), and detects address information (position address).
The HF signal detection circuit 27 detects the envelope of the RF signal supplied from the RF amplifier 23 and supplies it to the control unit 28. 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 27, when the identification number and the image area information are encoded by the presence or absence of ADIP as shown in FIG. When the barcode corresponding to the identification number and the image area information is formed as shown in FIG. 4C, the identification number and the image area information are obtained from the output of the HF signal detection circuit 27. Can be played.

The buffer memory 30 stores information supplied from the host device 40, 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 31 performs EFM modulation or 8to16 modulation on the recording data or visible image data read from the buffer memory 30 and outputs the modulated data to the strategy circuit 32.
The strategy circuit 32 performs time axis correction processing on the signal supplied from the encoder 31 and outputs it to the laser driver 33.
The laser driver 33 drives the laser diode of the optical pickup 22 based on the modulated signal supplied from the strategy circuit 32 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 31 to start encoding image data to be drawn on the circumference 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.

7). 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, When a visible image is recorded on the optical disc 1 for the first time, an identification number unique to the optical disc 1 is recorded in the inner circumference information area 2 or the outer circumference information area 3 of the optical disc 1. When the visible image is recorded in 1, the image area information that can represent the position, shape and size of the area occupied by the visible image is recorded in the inner peripheral information area 2 or the outer peripheral information area 3, Image data of the optical disc 1 on which a visible image is formed, the image data and the image data The link information to be associated with the identification number of the optical disc 1 is stored in the host device 40.
Here, various data used in the present invention are defined as follows.
_An : Image area information (referred to as information A, present on the optical disc 1)
B ^x ₀ : Identification number uniquely given to each optical disc (referred to as information B, present on the optical disc 1)
C ^x _n : Image data of an optical disc on which a visible image is recorded (referred to as information C, present in the host device 40)
D ^x _n : Link information that associates information B and information C (referred to as information D, present in host device 40)
G: Image data in image data C ^x _n A ′: Image area information obtained from image data C ^x _n stored in host device 40 C ′: Image data to be added by user
An-exist: Flag indicating the presence or absence of information A (image area information) on the optical disc 1 (“0”: none, “1”: present)
B0-exist: Flag indicating presence / absence of information B (identification number) 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. 8 is a diagram showing an example of information B (identification number), information C (image data of an optical disc on which a visible image is recorded), and information D (link information) stored or recorded on each host device and each optical disc. is there.
(1) in FIG. 8 shows an identification number after first recording a visible image on the first optical disk (x = 1) using the first host device α, and an image of the optical disk on which the visible image is recorded. Data and link information are shown. In the example shown in this figure, the identification number B ¹ ₀ of the first disk is a "AABBCCDD", the image data C ¹ ₀ of the optical disc is entitled "picture0.bmp" file, the link information associating these D ¹ ₀ (B ¹ ₀ , C ¹ ₀ ).
(2) of FIG. 8 shows each data after the first additional recording is performed on the first optical disk using the host device α. 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 “picture1.bmp”, and the link information for associating them is D ¹ ₁ (B ¹ ₀ , C ¹ ₁ ). Has been.
(3) of FIG. 8 shows each data after the second additional recording is performed on the first optical disk using the same host device α. The image data after the second additional recording is “picture2.bmp”, and the link information is D ¹ ₂ (B ¹ ₀ , C ¹ ₂ ).
(4) of FIG. 8 shows an example of each data when a visible image is recorded for the first time on the second optical disk (x = 2) using the same host device α. In the example shown in this figure, the identification number B ² ₀ the second optical disk is set to "ACEGIKMO". Moreover, the are as those recorded by the same visible image and during the first write-once to the first optical disk, the image data is the same "picture1.bmp" and the C ¹ _1, link information D ² ₀ ( B ² ₀ , C ¹ ₁ ). Thus, image data can be shared by a plurality of disks.
(5) of FIG. 8 shows an example of each data when a visible image is additionally recorded on the first optical disk (B ¹ ₀ = “AABBCCDD”) using the second host device β. . Image data C ¹ ₁ after the additional recording of the first by the host device β is "movie1.bmp", the link information is the _{^{D 1 1 (B 1 0,}} C 1 1). In this host device, since this is the first additional writing, n in the information C and the information D is 1.
(6) of FIG. 8 shows an example of each data when the second addition is performed on the first optical disk by the second host device β using the second host device β. Image data C ¹ ₂ after the additional recording of the times is "movie2.bmp", the link information is the _{^{D 1 2 (B 1 0,}} C 1 2).
(7) of FIG. 8 shows an example of each data when the third additional recording is performed in the host device α with respect to the first optical disk by using the first host device. Between the second additional writing by the host α (above (3)) and this additional writing, the additional writings of (5) and (6) are performed by the second host device β. Image data C ¹ ₃ after the additional recording of the times "picture3.bmp", the link information is the _{^{D 1 3 (B 1 0,}} C 1 3).
FIG. 8 (8) shows an example of each data when a visible image is recorded for the first time on the third optical disk (x = 3) using the third host γ, and the identification number of the optical disk. B ³ ₀ is set to "01234567". The image data C ³ ₀ is “data0.bmp”, and the link information is D ³ ₀ (B ³ ₀ , C ³ ₀ ).

FIG. 9 is a diagram illustrating an example of the image data (information C), the image data G, and the image area information A.
In this figure, (a) is an example of image data C ^x ₀ when a visible image is first recorded on the optical disk. This corresponds to (1) in FIG. As shown in this figure, an image G1 is recorded.
(B) shows an example of the image data C ^x ₁ when the first additional recording is performed on the optical disc. This corresponds to (2) in FIG. In addition to the image G1, a new image G2 is added. As described below, the user uses the editing screen image data C ^x ₀ is displayed of the (a), it is possible to place a desired image G2 to a desired position.
(C) shows an example of the image data C ^x ₂ when the second additional recording is performed on the optical disc. The image G3 is additionally written by this additional writing. The user performs an editing operation of the visible image G3 using the editing screen image data C ^x ₁ of the (b) is displayed.
(D) are diagrams showing the shape of the visible image reproduced from the image area information A _0, A _1, which is recorded on the optical disk. Wherein the position when recording the image G1 of (a), the image area information A ₀ is recorded on the optical disc may represent the shape and size, its position when append the image G2 of (b), the form And image area information A ₁ that can represent the size is recorded on the optical disc 1. As will be described later, if the image data C ^x ₁ of the disk is not recorded in the host device when an additional recording is attempted, the image area recorded on the disk as shown in FIG. The visible image to be added is edited using a screen displaying the shape of the visible image reproduced using the information.

10, FIG. 11 and FIG. 12 are flowcharts showing the flow of processing in the optical disc recording apparatus of the present invention when the first type of optical disc is used. In these figures, 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 20, the optical disc drive device 20 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 is the first type capable of recording a visible image, the processing shown in FIGS. 10 to 12 is executed.
First, the inner peripheral side information area 2 or the outer peripheral side information area 3 of the optical disc 1 is read, and it is determined whether or not the image area information (information _An ) is recorded (step S1).
When information A _n is not recorded, the flag An-The exist as "0" (step S2), and when the information A _n are recorded, the flag An-The exist as "1" (step S3), and The information _An is reproduced (step S4). At this time, the optical disc drive device 20, when reading the image area information has been made by comprehensively all the image area information A ₀ to A _n which is recorded so as to reproduce recognizes that the image area information A _n .
Next, 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) is recorded (step S5).
When the information B ^x ₀ is not recorded, the flag B0-exist is set to “0” (step S6). When the information B ^x ₀ is recorded, the flag B0-exist is set to “1”. (Step S7), the information B ^x ₀ is reproduced (Step S8).
Then, the flag An-exist, the flag B0-exist, the reproduced information _An and the reproduced information B ^x ₀ are transmitted to the host device 40 (step S9).

The host device 40, the flag An-The exist from the optical disc drive device 20, the flag B0-The exist, when receiving the information such as information A _n and the information B ^x ₀ (step S11), and the flag An-The exist and flag the received It is determined whether B0-exist is “0” or “1” (steps S12, S13, S24).
When both the flag An-exist and the flag B0-exist are “0” (when both the steps S12 and S24 are “0”), an unrecorded medium is inserted and a visible image is recorded for the first time (case 1). The process proceeds to step S25.
When one of the flag An-exist and the flag B0-exist is “0” and the other is “1” (Step S12 is “0” and Step S14 is “1”, or Step S12 is “1” and Step If S13 is “0”, that is, information _An exists but information B ^x ₀ does not exist or vice versa (case 5), there is a possibility that something abnormal has occurred. It is judged that it ends with an error. In addition to this, if an unexpected situation occurs, the error is terminated.
When the flags An-exist and B0-exist are both “1” (when both steps S12 and S13 are “1”), the information D ^x _n corresponding to the simultaneously received information B ^x ₀ (identification number) is It is determined whether it is stored in the own host device 40 (step S14).
When the information D ^x _n is not stored, it becomes a case where the host is changed for the first time to add an image (case 3), and the process proceeds to step S15.
When the information D ^x _n is stored, the image data C ^x _n of the optical disc on which a visible image is recorded is read based on the identification number B ^x ₀ and the link information D ^x _n (step S16). Then, the image area information A ′ of the pattern portion existing in the read image data C ^x _n is calculated (step S17), and the calculated image area information A ′ and the image area information A read from the optical disc 1 are calculated. _n is compared (step S18).
As a result, when A 'and A _n are equal is a case where additional recording an image using the same host device (case 2), the process proceeds to step S21.
When A ′ and _An are not equal, this is a case where additional writing is performed again using the host device previously used for additional writing (case 4), and the process proceeds to step S19.
Hereinafter, Case 1 to Case 4 will be described.

7-1. 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 C ^x ₀ and D ^x ₀ corresponding to the host device 40 do not exist. Therefore, the existing visible image is not displayed on the editing screen of the image editing program for editing the visible image to be added (step S25), and the user can paste the image G anew and edit the position and size. Alternatively, the image data of the optical disc 1 is edited using the existing information C (step S26).
The image data edited in this way is stored in the memory of the host device 40 as information C ^x ₀ corresponding to the optical disk (step S27).
The stored image data C ^x ₀ is set as visible image data C ′ to be additionally recorded on the optical disc 1 (step S36).
Next, image area information A ₀ that can represent the position, shape, and size of the pattern is calculated from the visible image data C ′ (step S37).
Next, an identification number B ^x ₀ assigned to the optical disc 1 is created (step S38). 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 S27 is stored in a storage unit such as a hard disk device of the host device 40 (step S39).
Next, link information D ^x ₀ that associates the information B ^x ₀ with the information C ^x ₀ is created, and similarly stored in the host device 40 (step S40).
Then, the information B ^x ₀ is transmitted to the optical disc drive device 20 (step S41).
The optical disc drive apparatus 20 shows the information B ^x ₀ received from the host device 40 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 S42).
Next, the host device 40 transmits the image area information A ₀ calculated in step S37 to the optical disc drive apparatus 20 (step S43), and the optical disc drive apparatus 20 transmits the transmitted image area information A _0. Are recorded in the same manner in the inner circumference information area 2 or the outer circumference information area 3 of the optical disc 1 (step S44).
Then, the host device 40 transmits the image data C ′ of the visible image to be added to the optical disc 1 to the optical disc drive device 20 (step S34), and the optical disc drive device 20 sends the corresponding visible image to the optical disc 1. Recording is performed (step S35).

7-2. Case 2 (When adding the visible image using the same host device)
In this case, information _An and information B ^x ₀ on the optical disk 1 can be reproduced, and link information D ^x _n exists in the host device 40. Then, since the link information D ^x image area information is read out from the image data C ^x _n image area information A 'and the optical disk 1 which is calculated from the read out by _n A _n are the same, other The visible image is not added by the host device.
Therefore, information C ^x _n corresponding to the optical disc identification number B ^x ₀ is read from the storage unit, and the information C ^x _n (visible image) is displayed on the editing screen of the image editing program for editing the visible image recorded on the optical disc 1. Is displayed (image data of the optical disc 1 on which recording has already been recorded) (step S21). 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 40 to add the visible image. The image is edited (step S22).
Then, the edited image data C ^x _{n + 1} is temporarily recorded in the memory of the host device 40 (step S23).

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 S28). 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 image area information A _{n + 1} of the visible image to be additionally recorded is calculated from the extracted image data C ′ as shown in FIG. 3 (step S29).
Then, the image data C ^x _{n + 1} created in step S23 is stored in the host device 40 (step S30). At this time, the image data C ^x _n may be used for another optical disc, and is stored as it is.
Next, link information D ^x _{n + 1} (B ^x ₀ , C ^x _{n + 1} ) for associating the identification number B ^x ₀ with the image data C ^x _{n + 1} is created, and the link information D ^x _n is overwritten. (Step S31). As a result, the link information D ^x _n of the previous generation is lost, and only the latest link information D ^x _{n + 1} is stored.
Next, the image area information A _{n + 1} calculated in step S29 is transmitted to the optical disc drive 20 (step S32).
The optical disc drive apparatus 20 applies the received image area information _{An + 1} to the inner peripheral side information area 2 or the outer peripheral side information area 3 of the optical disc 1 according to the method shown in FIGS. Use and record (step S33). As a result, the image area information A _{n + 1} of the image added by the current additional writing is added to a predetermined area of the optical disc 1.
Next, the host device 40 transmits the image data C ′ to be additionally recorded extracted in the step S28 to the optical disc drive device 20 (step S34), and the optical disc drive device 20 transmits the visible image based on the image data. Additional writing is performed on the optical disc 1 (step S35).

7-3. Case 3 (When adding a visible image for the first time by changing the host device)
In this case, it was possible to reproduce information A _n and information B ^x ₀ on the optical disc 1, information D ^x _n corresponding to the information B ^x ₀ to the host device 40 does not exist (step S14 NO). Therefore, it is not possible to load the image data of the corresponding information C ^x _n, it is not possible to reproduce the correct existing image on the screen first displays a message to that effect on the display screen of the host device 40 (Step S15).
Then, to understand the location and shape and size of the existing image from the image area information read from the optical disk 1 A _n, which was created as a new image data C ^x _n, stored in the memory (step S20).
In step S21, the created image data C ^x _n is displayed on the editing screen of the image editing program for editing the visible image.
The user pastes the image G to be newly added on the image data C ^x _n or combines it with other information C stored in the host device 40 to add the visible image to be added to the existing visible image. It can be inserted and edited so as not to overlap the image.
The following processing is the same as in the case 2 described above.

7-4. Case 4 (When re-adding using a host device that was previously used for post-recording)
This, it can be reproduced information A _n and information B ^x ₀ on the optical disc 1, although the host device 40 is the link information D ^x _n is present, read out on the basis of the link information D ^x _n since it has been and image data C ^x _n is calculated from the image area information a 'and the image area read out from the optical disk 1 information a _n do not match, the previous visible image recorded by the host apparatus (alpha) In this case, it can be seen that another host device (β) added the visible image.
In this case, the image data C ^x _n stored in the host device 40 does not include information on visible images added by other host devices, and an accurate existing image can be reproduced on the screen. Since it is not possible, a message to that effect is displayed on the screen (step S19).
Then, to understand the location and shape and size of the existing image from the image area information read from the optical disk 1 A _n, to reflect this in the image data C ^x _n, memory as new image data C ^x _n (Step S20).
Then, as in the case 2 and case 3, the image data C ^x _n is displayed on the editing screen of the image editing program (step S21), and the user edits the visible image to be added using the screen. Is performed (step S22).
The following processing is the same as in cases 2 and 3.

8). Modification In the above, the writing order of information A, information B, and information C may be changed.
Moreover, it is not restricted to the example mentioned above, You may change as follows.
8-1. Modification 1
In the above-described embodiment, the identification number B ^x ₀ unique to the optical disk is recorded on the optical disk only when a visible image is recorded for the first time. May be recorded. In this case, when the visible image is recorded, the identification number of the optical disk is stored in the host device, and the identification number recorded from the optical disk 1 is read and added to the host device when the additional image is recorded. If it matches the identification number, it can be determined that the additional writing has been made by the same host device, and if it does not match, it can be determined that the additional writing has been made by another host.
As a result, the step of comparing the image based on the information A on the disk and the image based on the image data C stored in the host device (steps S17 and S18) becomes unnecessary.

8-2. Modification 2
In the above, when (An-exist, B0-exist) = (1, 0) or (0, 1), the error was terminated (Case 5), but relief may be taken without terminating the error. . In that case, it is necessary to first display some advice. For example, “This disc may not be able to be added correctly because some information could not be read out” may be displayed.
In the case of (An-exist, B0-exist) = (1, 0), the same process as in case 3 described above may be performed. Then, after adding the image, information B may be generated and recorded on the disk to be restored.
When (An-exist, B0-exist) = (0, 1), first, it is checked whether or not the information B exists in the link information D stored in the host device. The existing image is reproduced by C, and thereafter, additional recording is performed in the same manner as in the case 2 and finally information A is recorded on the disc. If it does not exist, no information on the existing image can be read and the image cannot be reproduced on the host. Therefore, blank display is performed on the host. Thereafter, the same process as in the case 1 (unrecorded disk) described above may be performed. However, recording of information B on the disc is omitted.

8-3. Modification 3
In the case 4, instead of displaying only the information A _n when displaying an existing image, first, an image is displayed by the information C ^x _n stored in the host device, supplemented only shortfall from the information A _n An existing image may be displayed.

9. Operation of Optical Disc Recording Device When Using Second Type Optical Disc FIG. 13 is a flowchart showing the flow of processing in the optical disc recording device when using the second type optical disc.
When an optical disc is set in the optical disc drive apparatus 20, the optical disc drive apparatus 20 checks whether the set optical disc is a multi-session disc of the second type optical disc (step S51). When the set disc is the second type optical disc and a command for instructing image recording is issued from the host device 40, the drive device 20 determines whether or not the data recording layer of the set optical disc is in an unrecorded state. Is determined (step S52).
When the data recording layer is in an unrecorded state, the host device 40 is notified of this, and the host device 40 displays a warning prompting the user to draw an image after recording data on the data recording layer. Then, the process ends (step S53). This is because some playback-only machines operate as if data such as music and images are always recorded in the first session, and this is inconvenient when image area information is recorded in the first session. This is to prevent the occurrence.

On the other hand, when the data recording layer is not in an unrecorded state, the drive device 20 reproduces the program area of each recorded session (step S54), and the image is determined depending on whether the recognition code of the image area information is detected. It is determined whether there is a session in which area information is recorded (step S55).
When there is no session in which the image area information is recorded, since no image is drawn on the disc, it corresponds to the case 1 described above (when a visible image is recorded on the optical disc for the first time). Therefore, the processing of steps S25 to S27 in FIG. 11 is executed (step S56). That is, the blank optical disk surface is displayed on the editing screen of the image editing program, and image data C ^x ₀ obtained as a result of editing processing such as addition of an image by the user is obtained and stored in the memory of the host device 40. .
Subsequently, the processing of steps S36 to S40 in FIG. 12 is executed (step S57). That calculation, the image data C ^x ₀ 'as the data C of the visible image' data C of the visible image to be additionally written to the optical disc the position of the pattern from the image area information A ₀ which can represent the shape and size To do. Further, an identification number (disc unique identification code) B ^x ₀ (information B) unique to the optical disc is created, and link information D ^x ₀ that associates the identification number B ^x ₀ with the image data C ^x ₀ is created. . Then, the image data C ^x ₀ and the link information D ^x ₀ are stored in the host device 40.
Then, the image area information A ₀ and the identification number B ^x ₀ are transmitted to the optical disc drive apparatus 20 (step S58), and the optical disc drive apparatus 20 receives the received image area information A ₀ and the identification number B ^x ₀ (disc specific). (Identification code) is recorded in a multi-session on the second type of optical disc in which it is set (step S59).
Then, the host device 40 transmits the visible image data C ′ to be additionally recorded to the optical disc drive device 20 (step S68), and the optical disc drive device 20 draws the visible image data C ′ on the image of the second type optical disc. Recording on the layer (step S69).

On the other hand, when there is a session in which image area information is recorded in the program area of the optical disk (YES in step S55), the host device 40 sends a session in which image area information is recorded to the optical disk drive device 20. The acquisition of the image area information (information A) and the disc unique identification code (information B) recorded in the last session is requested (step S60). Thereby, when there are a plurality of sessions in which image area information is recorded, the latest image area information recorded on the optical disc can be acquired.
In response to this request, the optical disc drive 20 reads the latest image area information (information A) and disc identification number (information B) from the program area of the disc (step S61) and transmits it to the host device 40 (step S61). S62).
In the host device 40, whether or not the disc identification number B ^x ₀ (information B) sent from the optical disc drive device 20 is present in the link information (information D) stored in the device, That is, it is determined whether or not the link information D ^x ₀ corresponding to the identification number B ^x ₀ is stored in the host device 40 (step S63).
Then, according to the result, as in the case of FIG. 11, Case 2 (when a visible image is additionally recorded using the same host device), Case 3 (when a visible image is additionally recorded for the first time by changing the host device) ) And Case 4 (when re-adding using a host device previously used for additional writing) is executed (step S64).

That is, when the identification number B ^x ₀ does not exist in the link information D stored in the host device 40 (NO in step S63), the host is changed for the first time and an image is to be added (case 3). since) is, after the warning display indicating that it is impossible to reproduce the exact existing image, to grasp the position and shape of the size of the recorded image area had information a _n from the existing image, this New image data C ^x _n is created and recorded in the memory, and the image data C ^x _n is displayed on the editing screen of the image editing program.
When the identification number B ^x ₀ is present in the link information D stored in the host device 40 (YES in step S63), the identification number B ^x ₀ is based on the identification number B ^x ₀ and the link information D ^x _n . The image data C ^x _n of the optical disk is read out. Then, the read image data C ^x image area information of a picture portion in _n A Compare 'to calculate the calculated image area information A' and the image area information A _n read from the optical disc.
When the calculated image area information A 'and the read image area information A _n was do not match, in order to correspond to the case (case 4) that may have been drawn in another host device, accurate existing Displays a warning that the image cannot be reproduced. Then, as in the case of the case 3, to grasp the position and shape of the size of the existing image from the read image area information A _n, to create it as a new image data C ^x _n, in the memory In addition to recording, the image data C ^x _n is displayed on the editing screen of the image editing program.
On the other hand, when the calculated image area information A _n read the image area information A 'was matches, corresponds to the case of write once a visible image (Case 2) Using the same host device, an image editing to display the image data C ^x _n read based on the editing screen of the program in the link information D ^x _n.
As described above, the image data C ^x _n corresponding to each of the cases 2, 3, and 4 is displayed on the editing screen, and the user can paste the image G to be added on the editing screen, The visible image to be added is edited by combining with other information C stored in the device 40. Then, the image data C ^x _{n + 1} created as a result of editing is temporarily stored in the memory of the host device 40.

Next, substantially the same processing as steps S28 to S31 in FIG. 12 is executed (step S65). That is, the difference C ′ = C ^x _{n + 1} −C ^x _n between the created image data C ^x _{n + 1} and the image data C ^x _n is extracted as image data of a visible image to be additionally recorded on the optical disc. Further, image area information A ^x _{n + 1} that can represent the position, shape, and size of the area occupied by the visible image included therein is calculated from the created image data C ^x _{n + 1} . In the step S29, whereas was calculated image area information A ^x _{n + 1} from the difference information C ', where the image area information A ^x _n from the image data C ^x _{n + 1} that was created _The difference is that ₊₁ is created. Then, the host device 40 stores the image data C ^x _{n + 1} of the created, creating the link information D ^x _{n + 1} that associates an identification number B ^x ₀ of the optical disk and the image data C ^x _{n + 1} It overwrites the link information D ^x _n Te.
Then, the host device 40 transmits the optical disk identification number B ^x ₀ and the calculated image area information A ^x _{n + 1} to the optical disk drive device 20 (step S66). Receiving this, the optical disc drive apparatus 20 records the identification number B ^x ₀ and the image area information A ^x _{n + 1} on the set optical disc in a multi-session (step S67).
Next, the host device 40 transmits the visible image data C ′ to the optical disc drive device 20 (step S68), and the optical disc drive device 20 sends the received data C ′ to the image drawing layer of the second type optical disc. (Step S69).
In this way, a visible image can be easily recorded at an accurate position on the second type optical disc.

  In the above, in the case of using the second type optical disc, the image area information corresponding to the visible image recorded on the disc surface after the visible image is added each time the visible image is added. However, the present invention is not limited to this, and the image area information corresponding to the added visible image is recorded in a new session as in the case of using the first type optical disc. Alternatively, all session data in which image area information is recorded may be read and combined and displayed on the display.

It is a figure which shows the structure of one Embodiment of the 1st type optical disk used in this invention. 2A and 2B are diagrams showing a layer structure of a second type optical disc used in the present invention, FIG. 3A is a diagram showing a layer structure of a CDR type dual layer optical disc, and FIG. 2B is a layer structure of a DVDR type dual layer optical disc. (C) is a figure which shows the layer structure of the dual layer optical disk of a CDR-DVDR mixed type. It is a figure for demonstrating image area information, (a) when viewing a visible image as a rectangle, (b) When viewing a visible image as a sector, (c) When expressing as a polygon, (d) is It is a figure which shows the case where it represents with a some fan shape. It is a figure for demonstrating the method to record an identification number and image area information on the 1st type optical disk, (a) records an identification number directly in a recording area, (b) shows the track | truck of a recording area. In the case of dividing each predetermined length and recording the segment as 1 bit, (c) shows a case where a barcode corresponding to the identification number is formed in the recording area by a visible image recording method. It is a figure for demonstrating the mode of recording to the program area in the 2nd type optical disk. It is a figure for demonstrating the recording method of the image area information to the 2nd type optical disk, (a) is a figure which shows the definition of a data byte, (b) is a specific example of recording of image area information. FIG. 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, and the image data preserve | saved at a host apparatus. It is a figure which shows the example of image data (information C), image data G, and image area information A. It is a flowchart (the 1) 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 (the 2) 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 (the 3) 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, 20: optical disc drive device, 21: spindle motor, 22: optical pickup, 23: RF amplifier, 24: servo Circuit 25: Decoder 26: Address detection circuit 27: HF signal detection circuit 28: Control unit 29: ALPC circuit 30: Buffer memory 31: Encoder 32: Strategy circuit 33: Laser driver 40: Host device

Claims (12)

A visible image recording method for forming a visible image edited using a host device on an optical disk using a laser,
Recording an identification number unique to the optical disc in a predetermined area of the optical disc;
Recording image area information that can represent the position, shape and size of the area occupied by the visible image on the disk surface in a predetermined area of the optical disk;
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 the identification number unique to the optical disc;
Reading the identification number and the image area information from an optical disc;
Based on the read identification number and the link information, reading the optical disk image data 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.   In the display step, when the link information corresponding to the identification number read from the optical disc is not stored in the host device, the image read from the optical disc instead of the image data is stored. 2. The method for recording a visible image on an optical disk according to claim 1, further comprising a step of displaying an optical disk and a visible image area formed on the disk surface based on the area information. The displaying step further includes:
Calculating image area information that can represent the position, shape, and size of a visible image on the disk surface of the visible image included in the image data from the image data of the optical disk stored in the host device;
Comparing the calculated image area information with image area information read from the optical disc;
When the comparison results do not match, the shape of the visible image obtained from the image area information read from the optical disc is displayed at a position corresponding to the size corresponding to the image area information instead of the image data. The method for recording a visible image on an optical disk according to claim 1, further comprising:   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 deleted. The visible image recording method on an optical disc according to claim 1. 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 1, wherein the recording area is an area in which the identification number and the image area information are recorded. The optical disc is a single-sided dual-layer optical disc having a visible image recording layer and a data recording layer,
2. The visible image recording method on an optical disc according to claim 1, wherein the identification number and the image area information are recorded on a data recording layer of the optical disc. An optical disk recording apparatus capable of forming a visible image edited using an editing screen on an optical disk using a laser,
Means for recording an identification number unique to the optical disc in a predetermined area of the optical disc;
Means for recording, in a predetermined area of the optical disk, image area information that can represent the position, shape and size of the area occupied by the visible image on the disk surface;
Means for storing, in a storage unit, image data of an optical disc on which a visible image edited using an edit screen is formed, and link information that associates the image data with the identification number of the optical disc;
Means for reading the identification number and the image area information from an optical disc;
Means for reading out the image data of the optical disc from the storage unit based on the read identification number and the link information, and displaying the image data on the editing screen;
An optical disk recording apparatus comprising: means for forming, on the optical disk, a visible image that is newly added to the optical disk in response to editing on the editing screen.   The means for displaying is based on the image area information read from the optical disc instead of the image data when the link information corresponding to the identification number read from the optical disc is not stored. 8. The optical disc recording apparatus according to claim 7, wherein the optical disc and a visible image area formed on the disc surface are displayed.   The means for displaying calculates, from the image data, image area information that can represent the position, shape, and size of a visible image on the disk surface included in the image data, and the calculated image area information and the optical disk When the image area information read from the optical disk does not match, the image data is replaced with the image data, and the shape of the visible image formed on the optical disk obtained from the image area information read from the optical disk is changed to the image. 8. The optical disk recording apparatus according to claim 7, wherein the optical disk recording apparatus displays information at a position corresponding to the size corresponding to the area information.   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. 8. The optical disk recording apparatus according to claim 7, wherein the optical disk recording apparatus is provided. 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 disc recording apparatus according to claim 7, wherein the recording area is an area in which the identification number and the image area information are recorded. The optical disc is a single-sided dual-layer optical disc having a visible image recording layer and a data recording layer,
8. The optical disc recording apparatus according to claim 7, wherein the identification number and the image area information are recorded on a data recording layer of the optical disc.

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