RU2274912C2 - Method of recording and/or playing back for record carrier, playback device, record carrier, method of determining record carrier and method of recording and playing back for device using record carrier - Google Patents

Abstract

FIELD: methods of recording and/or playing back for optic record carriers.

SUBSTANCE: method of recording and/or has the following steps: reading address from record carrier out (record carrier has at least first and second areas - data is recorded to first are and the first area goes after the second one. Information of address represents location of the second area), detecting of error, which corresponds to error detection code used for coding address information, which is read out from record carrier. When result of step of determination represents that the error was detected in address information, which was read out of record carrier the note comes to user on the error detected.

EFFECT: improved stability of recording; improved stability in data recording.

125 cl 11 dwg

Description

Technical field

The present invention relates to a recording and / or reproducing method for a recording medium, a reproducing apparatus, a recording medium, a method for determining a medium, a recording and / or reproducing method for a device using a recording medium that can be used as a data recording medium on which information is recorded addresses representing the position of the zero track, etc.

Prior art

In recent years, optical discs have been developed that are used as high-capacity recording media. For example, a CD (compact disc) for music information, a CD-ROM for computer data, and a DVD (digital versatile disc or digital video disc) for video information are known. These discs are read-only discs. Recently, optical discs such as CD-R (writable CD) and CD-RW (writable CD) have been used commercially for recording and overwriting data.

On the above disc-shaped recording media, such as CD, CD-ROM, CD-R and CD-RW discs, a data management area called a zero track is formed on the inside of the program area in which the data is recorded. In addition, on the outside of the program area, another area is formed, which is called the end zone. In these areas is located information about addresses and time for information recorded on the disk.

Preliminary sequential formatting of the address information is performed, for example, on CD-R or CD-RW discs by means of "wobble" the guide groove for the laser beam (hereinafter referred to as the groove). In this case, using the wobble of the track, information on the position on the disk or information on time is sequentially recorded. On CD-R / CD-RW discs, data is written to the disc using a link to the address information that is obtained when decoding track wobble information. On CD-R / CD-RW, the address information is obtained in such a way that the wobble information is extracted from the signal read from the disk as a frequency modulated signal with a carrier frequency of 22.05 kHz, and then the selected wobble information is demodulated. Address information is indicated as ATIP (Absolute Time in a Preformed Track). Absolute disk addresses are represented by absolute time information.

An absolute address consists of time information in minutes, seconds and frames (MSF format). In MSF format, the decimal digit of minutes, seconds and frames is represented using BCD (binary decimal number encoding). One second equals 75 frames. Addresses from 00 minutes, 00 seconds, 00 frames to 99 minutes, 59 seconds, 74 frames can be represented. One decimal digit is represented by four bits in binary decimal. However, ATIP requires 24 bits.

On CD-R or CD-RW discs, control signals, in addition to time information signals, are recorded using ATIP in the zero track area. The control signals include the start address of the zero track (indicated as the start time of the zero track) and the maximum start address of the end zone (indicated as the start time of the end zone). Zero track start time and end zone start time is information that is read by the drive device when CD-R / CD-RW discs are loaded into the recording and reproducing device. This information is important for using loaded CD-R / CD-RW discs.

Using the error detection code (CRC) for each ATIP-encoded frame, error information for the start time of the zero track and the start time of the end zone can be detected. However, it is not possible to ensure reliable detection of such an error. To improve reliability in the address information, an error detection / correction coding can be used, which allows to obtain higher reliability indices. To do this, the amount of redundant code, such as a parity check code, is increased. As a result, code redundancy leads to poor performance. As for the CD-R disc, for which the disc format is already standardized, it is difficult to change the error detection / correction encoding.

In addition, depending on the use case, even if a standard recording medium such as a CD-R disc is used, it may be necessary to use a recording medium with as low an eccentricity value as possible. However, in standard disc applications, there is no need to identify such a disc. Thus, there is no way to identify disks.

Thus, the present invention is directed to a method for recording and / or reproducing on a recording medium, a reproducing apparatus, a recording medium, a method for determining a recording medium and a method for recording and / or reproducing for a device using a recording medium that can record address error information such as the start time of the zero track or the start time of the end zone, which represents the position of the area to be determined using the address information itself, and using this information a Dresa should be determined disk.

Description of the invention

The present invention is directed to a recording and / or reproducing method for a recording medium, comprising the following steps:

reading the address information from the recording medium, wherein the recording medium has at least a first region and a second region, the data is recorded in the first region, the first region follows the second region, and the address information represents the position of the second region;

detecting an error in accordance with an error detection code by which address information that has been read from the recording medium is encoded; and

when the result of the detection step represents that an error was found in the address information that was read from the recording medium, at least an indication is made to the user that an error has been detected.

The present invention is directed to a recording and / or reproducing method for a recording medium, comprising the following steps:

reading the address information from the recording medium, wherein the recording medium has at least a first region and a second region, the data is recorded in the first region, the first region follows the second region, and the address information represents the position of the second region;

detecting an error in accordance with an error detection code by which address information that has been read from the recording medium is encoded; and

when the result of the detection step represents that an error has been detected in the address information that has been read from the recording medium, data recording is prohibited at least in the first region of the recording medium.

The present invention is directed to a recording and / or reproducing method for a recording medium, comprising the steps of:

reading the address information from the recording medium, wherein the recording medium contains at least a first region, a second region and a third region, data can be recorded in a first region, a first region follows a second region, a third region follows a data recording region, address information represents at least one of the first address information and the second address information, the first address information represents the position of the second region, and the second address information represents the position of the third region;

detecting an error in accordance with an error detection code by which the address information of at least one of the first address information and the second address information that has been read from the recording medium is encoded; and

when the result of the detection step represents that an error has been detected in the address information in at least one of the first address information and the second address information that has been read from the recording medium, at least an indication is made to the user that an error has been detected.

The present invention is directed to a recording and / or reproducing apparatus for a recording medium, comprising:

a head for recording or reproducing data on / from the recording medium, wherein the recording medium comprises at least a first region and a second region, data is recorded in the first region, the first region follows the second region;

an error checking unit for detecting an error, in accordance with an error detection code by which address information that has been read by the head from the recording medium is encoded, the address information representing the position of the second region; and

a control unit, designed to at least indicate to the user that an error has been detected when the error detection result of the error checking unit represents that an error has been detected in the address information that has been read from the recording medium.

The present invention is directed to a recording and / or reproducing apparatus for a recording medium, comprising:

a head for recording or reproducing data on / from the recording medium, the recording medium having at least a first region and a second region, data is recorded in the first region, the first region follows the second region;

an error checking unit for detecting an error in accordance with an error detection code by which address information that has been read from the recording medium by the head is encoded, the address information representing the position of the second region; and

a control unit that prohibits writing data to at least a first region of the recording medium when an error detection result of the error checking unit represents that an error has been detected in the address information that has been read from the recording medium.

The present invention is directed to a recording and / or reproducing apparatus for a recording medium, comprising:

a head for recording or reproducing data on / from the recording medium, a recording medium having at least a first region, a second region and a third region, the data being recorded in the first region, the first region following the second region, and the third region following the region data records;

an error checking unit for detecting an error corresponding to an error detection code with which address information of at least one of the first address information and the second address information that has been read from the recording medium using the head is encoded; and

a control unit for indicating to at least the user that an error has been detected when the error detection result of the error checking unit represents that an error has been detected in the address information of at least one of the first address information and the second address information that was read from the recording medium.

The present invention is directed to a recording medium having:

the first area in which data is recorded;

a second region followed by a first region; and

the third region, before which the first region follows,

in which the address information, which represents at least the position of the second region, is recorded by the error detection process using the error detection code, and

in which the address information is a value that satisfies a predetermined calculated expression.

The present invention is directed to a recording medium having:

the first area in which data is recorded;

a second region followed by a first region; and

the third region, before which the first region follows,

in which the address information, which represents at least the position of the second region, is recorded by the error detection process using the error detection code, and

in which the block of the least significant bits of the address information is selected in accordance with the data that represent the manufacturer.

The present invention is directed to a method for determining a recording medium, comprising the following steps:

reading the address information from the recording medium loaded into the device, the recording medium has at least a first region, a second region and a third region, the data being written to the first region, the second region followed by the first region, the third region followed by the data recording region, the address information is at least one of the first address information and the second address information, the first address information represents the position of the second region, and the second address information represents the position t etey area;

error detection in accordance with the error detection code with which the address information of at least one of the first address information and the second address information that has been read from the recording medium is encoded; and

determining whether the loaded recording medium is suitable for the device in accordance with the result of the detection step.

The present invention is directed to a recording and / or reproducing method for a device that uses a recording medium, comprising the following steps:

reading the address information from the recording medium loaded into the device, the recording medium having at least a first region, a second region and a third region, the data is recorded in the first region, the first region follows the second region, the third region follows the data recording region, the address information is at least one of the first address information and the second address information, the first address information represents the position of the second region, the second address information represents the position of the your area;

error detection in accordance with the error detection code, by which the encoded address information of at least one of the first address information and the second address information that has been read from the recording medium; and

determining whether the loaded recording medium is suitable for the device in accordance with the result of the detection step.

According to the present invention, since the address information such as the start time of the zero track is encoded so that its error can be detected, the reliability of the address information can be improved. For example, by improving the error tolerance of the zero track start time, data can be stably recorded and reproduced. In addition, in accordance with the present invention, since no additional parity check code is required, even if, for example, a standard media signal format is used, the present invention can be easily applied to a given recording medium. In addition, in accordance with the present invention, an error detection result is used to determine recording media. Thus, the recording / reproducing apparatus can only use recording media suitable for it. In this case, when a plurality of coding types are performed for error detection, a plurality of types of recording media can be determined. In addition, in accordance with the present invention, the address information, such as the start time of the zero track, is encoded so that the detection of disks can be performed automatically. Thus, after it is determined whether the disc is really suitable for this device, data can be written to the disc / play from the disc.

Brief Description of the Drawings

Figure 1 depicts a block diagram representing the General structure of a device disk drive in accordance with one embodiment of the present invention;

FIG. 2 is a diagram explaining an arrangement of regions on an optical disc in accordance with one embodiment of the present invention; FIG.

FIG. 3 is an enlarged cross-sectional view showing the structure of an optical disc in accordance with one embodiment of the present invention; FIG.

4 is a diagram representing a wobble of a track in accordance with one embodiment of the present invention;

5 is an enlarged view showing a wobble of a track in accordance with one embodiment of the present invention;

6 is a diagram representing an address format in accordance with one embodiment of the present invention;

7 is a diagram representing the content of information represented by the most significant bit of the address format;

FIG. 8 is a diagram showing the contents of consecutive frames of a zero track of an address format; FIG.

Fig.9 is a diagram explaining the contents of the edge of the zero track;

10 is a diagram representing an example of a manufacturer determination using a zero track start time.

Best Embodiments of the Present Invention

Next, one embodiment of the present invention will be described. This embodiment is illustrated by the application of the present invention for a CD-R disc. Figure 1 shows an example of a device for recording and reproducing a disc (hereinafter referred to simply as a drive). 1, reference numeral 1 denotes a writable optical disc, for example, a CD-R disc. The optical disk 1 rotates at a constant linear speed or constant angular speed using the engine 2 rotation of the disk. The optical sensor 3 is positioned so that it writes data to the optical disk 1 and reads data from the optical disk 1. The optical sensor 3 moves along the radius of the disk 1 using the electric motor 4 of the drive.

As shown in FIG. 2, the optical disk 1 in accordance with one embodiment of the present invention has a central opening and a seating area for the disk. A central hole is formed in the center of the optical disk 1. A disk seating area is formed around the central hole. In the direction from the inner part to the outer part of the disk, a PCA area (power calibration area), a PMA area (program memory area), a zero track LI, a program area RA and an end zone LO are formed. The PCA region is an area for adjusting the power of the laser beam emitted by the optical sensor on the optical disk 1. The PMA region is an area for temporarily recording address information necessary for the rewriting operation (namely, information enabling recording new data after the end position of the previous records). The diameter of the optical disc is 1 = 120 mm, which matches the format of the CD. However, since there is a CD single CD, which is a CD with a diameter of 8 cm, the diameter of the optical disc 1 may be 80 mm.

FIG. 3 shows the structure of the optical disk 1. FIG. 3 shows a CD-R disk, as an example of the optical disk 1. Assume that the side that the laser beam of the optical sensor 3 irradiates is shown from below, a protective film is sequentially formed towards the lower side 21, a reflection film 22, a recording layer 23, and a substrate 24. The reflection film 22 consists of a metal material such as Au or Ag. Layer 23 entries consists of organic dye. The substrate 24 consists of a synthetic resin with high optical permeability. The substrate 24 can be made, for example, of polycarbonate, in which the groove 25 is preformed. As an organic coloring material for the recording layer 23, a cyanine type coloring material and a phthalocyanine type coloring material can be used. As described in the Prior Art Section, a preformed groove 25 is configured to “wobble” in the radial direction of the disk 1, whereby address information (position information) is recorded therein. When the laser light energy emitted by the optical sensor 3 is focused on a previously made groove 25 (in other words, when the laser light is focused by the lens of the optical sensor 3), a deformed part (pits) is formed in the interface between the part of the heated and dissolved organic coloring material of the recording layer 23 and a substrate 24, which softens as a result of heating by the light emitted by the laser. As a result, data is recorded in the preformed groove 25 of the optical disc 1. When a laser light with an intensity level lower than the laser light in the recording mode is supplied to the optical disk 1 from the optical sensor 3, and the difference between the energy level of the light emitted by the optical sensor 3 and the amount of light reflected by the optical disk 1 is determined by the optical head 3, this data can be reproduced. Information from the optical disc 1 can be reproduced using a CD player and a CD-ROM playback device, as well as a CD-R recording and playback device.

As shown in figures 4 and 5, the pre-formed groove 25 is made sequentially in the form of a spiral from the PCA region to the LO region of the final zone (over the entire surface of the disk from the inner part to the outer part). A preformed groove 25 is made with wobble to control the rotation of the disk and to generate a reference recording signal. As described above, data is recorded in the preformed groove 25 or between the preformed groove 25 and the surface of the disc. The address information is sequentially recorded in the form of wobble information of the preformed groove 25. To record the address information in the form of wobble information, the optical sensor 3 is moved to the desired recording location of the optical disk 1. Data is recorded in the desired location of the optical disk 1.

As can be seen in FIG. 1, data is transmitted from the host computer 10, which is an external device with respect to the disk drive, via interface 9 (I / F) (for example, via the SCSI interface (small computer system interface). An encoding / decoding device 5 (ENC / DEC) is connected to the interface 9. A buffer memory 6 is connected to the encoding / decoding device 5. In the buffer memory 6, write data or read data is recorded.

The recording data is supplied to the encoding / decoding device 5 via the interface 9. In the recording mode, the encoding / decoding device 5 generates data in a CD-ROM format. After that, the data in the CD format is modulated using EFM modulation ((eight-to-fourteen modulation) conversion of the primary 8-bit to 14-bit code to reduce the density of recording elements on the optical disc and increase the noise immunity) and are encoded using the encoding process with error correction. In the playback mode, the encoding / decoding apparatus 5 performs the decoding process of the radio frequency signal coming from the radio frequency signal processing unit 11 (which will be described later). Digital data as a result of the decoding process is transmitted to the host computer 10 through the interface 9. In addition to ATIP, the encoding / decoding device 5 adds address data to the recording data in the form of a subcode. In addition, the encoding / decoding device 5 adds the address data to the data header generated in the CD-ROM format. Such address data represents the addresses used with ATIP.

The recording data is supplied to the encoding / decoding device 5 to the laser drive 8 through a recording compensator 7 (recording equalizer). Compensator 7 performs non-linear conversion to write data so that the recorded bits become the same as on a CD. The degree of compensation of the recording compensator 7 is adjusted depending on the characteristics of the recording layer of the optical disk 1, the shape of the recording laser beam, etc. Information that represents the optimum power for optical disc 1 is recorded in ATIP. In addition, to obtain a truly optimal value of the recording power of the optical disk 1 (namely, the output level of the laser light emitted by the optical sensor 3), a test recording is performed using the PCA region. As a result of the test recording operation, the optimum value of the recording power can be obtained. After the optimal power is set, the data is recorded on the optical disk 1.

The laser drive supplies power to the semiconductor laser device, which is used as the light source of the optical sensor 3 in accordance with the output signal of the recording compensator 7 so that a drive signal is generated having a predetermined level necessary to write data to the optical disk 1. The drive signal is supplied from laser drive 8 to the semiconductor laser device of the optical sensor 3. Laser light corresponding to the recorded data is emitted from the semiconductor laser device. Thus, data is recorded on the optical disk 1. As described above, the APC (automatic power control) of the radio frequency signal processing unit 11 controls the laser drive 8 so that the output level of the laser light that is emitted from the semiconductor laser device is maintained at an optimal level. The output signal in the form of light reflected from the optical disk 1, which is recorded by the optical sensor 3, is supplied to the block 11 of the radio frequency signal processing. The wobble signal, obtained as a push-pull signal generated in accordance with the output signal of the optical sensor 3, is supplied from the processing unit 11 of the radio frequency signal to the block 12 allocation of the address.

The radio frequency signal processing unit 11 comprises a matrix amplifier. The matrix amplifier makes appropriate calculations based on the signal detected by the photodetector of the optical sensor 3. As a result, in addition to the bipolar signal described above, the radio frequency signal processing unit 11 generates a head position tracking error signal TE and a focus error signal FE. The head position tracking error signal TE and the focus error signal FE are supplied to the servo control unit 14.

The address allocation unit 12 provides a wobble signal in the form of a push-pull signal transmitted from the RF signal processing unit 11 to a frequency modulated signal demodulator through a bandpass filter that passes only a frequency in the band close to the carrier frequency (22.05 kHz) to obtain two-phase signal. In addition, the address allocation unit 12 uses the clock frequency obtained from the two-phase signal to control the disk rotation motor 2. In addition, the address allocation unit 12 extracts the address data and the control signal from the two-phase signal with a clock frequency. The address data and the control signal extracted by the address allocation unit 12 are supplied to the control unit 13 based on the microcomputer.

The control unit 13 controls the operation of the search using the address data supplied from the address allocation unit 12. In addition, the control unit 13 controls the power level of the laser light emitted by the optical sensor 3 using the transmitted control signal. The control unit 13 controls the drive units, such as an interface 9, an encoding / decoding device 5, an RF signal processing unit 11, and a servo control unit 14.

The output of the address allocation unit 12 is supplied to the control unit 13. In addition, the output of the address allocation unit 12 is supplied to the error checking unit 15. As will be described below, the error checking unit determines the presence / absence of an error using the zero-track start time data and / or the start time data of the final zone of the control signal, and outputs the error detection result to the control unit 13.

According to this embodiment, since the optical disc 1 is a CD-R disc, various recording methods, such as “an entire disc at once”, “track at once”, “packet at once” and “multiple sessions” can be used. In the “whole disk at once” method, when the work of writing data to the optical disk 1 begins, it cannot be stopped until it is completely finished. In this method, the data is recorded in the following order: the zero track LI, the program area RA and the end zone LO of the optical disk 1. In the method "track immediately", the data is first recorded in the program area. Then the data is written to the end zone. Finally, data is written to track zero. In the “track immediately” method, each track number, start time data and end time data that are read from ATIP are recorded in the preformed track 25 in the form of wobble information. After all the data has been recorded in the corresponding track, recording is made in the final zone. In addition, in accordance with the information that is read from the area of the PMA, TOC information is created. TOC information is recorded in track zero. In the method, a packet immediately rewrites a small amount of data. In the multi-session method, data is recorded so that multiple sessions are formed in the radial direction of the optical disk 1. Data is recorded in such a way that each session has a zero track and an end zone.

In addition, when reproducing the optical disk 1, an RF signal is generated at the output of the RF signal processing unit 11. This radio frequency signal is supplied to the encoding / decoding device 5. The encoding / decoding apparatus 5 performs an EFM demodulation process and a decoding process in a CD format, such as an error correction decoding process. After that, the device 5 encoding / decoding performs the decoding process in CD-ROM format. The reproducible data that is generated at the output of the encoding / decoding device 5 is recorded in the buffer memory 6. When the encoding / decoding device 5 receives a read command from the host computer 10, the encoding / decoding device 5 transmits the reproduced data recorded in the buffer memory 6 to the main computer 10 through interface 9.

The frame synchronization signal, the tracking error signal TE, and the focus error signal FE, which are supplied from the output of the radio frequency signal processing unit 11, as well as the clock signal, which is output from the address allocation unit 12, are supplied to the servo control unit 14. The servo control unit 14 performs servo control of track tracking and servo focus control for the optical sensor 3, servo control of the disk rotation drive for the disk rotation motor 2, and servo control for the drive motor 4.

As described above, on the optical disk 1, the preformed groove 25 is made with frequency modulated wobble (FSK) with a carrier frequency of 22.05 ± 1 kHz. When the frequency-modulated wobble of the pre-formed groove 25 is demodulated from the generated push-pull signal corresponding to the output signal of the optical sensor 3, a two-phase signal with a clock frequency of 6.3 kHz is obtained. When the received two-phase signal is demodulated, data can be received at a speed of 3150 bps. As described above, since one second is equivalent to 75 frames, one ATIP data frame that is used as address data consists of 42 bits.

6 shows the data structure of one ATIP data frame used as the address data of optical disk 1. The first four bits are a synchronization signal (SYNC). The next 24 bits are part of the address description. The last 14 bits are CRC (cyclic redundancy code). The synchronization signal has a special structure, which is no longer found in a two-phase signal. The decimal digits of minutes, seconds and frames of the data address (time information) are denoted by eight bits representing a binary decimal code. In this case, addresses up to 99 minutes, 59 seconds, 74 frames can be presented. Assuming the amount of data in one frame is 2 kilobytes, addresses for approximately 900 megabytes can be recorded.

In the optical disc format 1 (CD-R), in the combination of the four high-order bits for group M for "minutes", S for "seconds" and F for "frames" (in practice, these bits are not used (namely, all are 0) , information is presented that is not address information (this information is indicated as additional information). As for the most significant bit of group M, which means “minutes,” its most significant bit becomes “1” when M = “99 minutes.” However in fact, to date, the recording time for commercially available discs is not used more than 80 minutes. Thus, the most significant bit of the group, which means “minutes”, never becomes equal to “1.” Additional information, in addition to address information, is recorded in track LI. In the program area of RA and in the end zone LO, only Address data

7 shows the content of information in combinations of the three bits M1, S1 and F1, which are the most significant bits in the groups M for minutes, S for seconds and F for frames. In other words, the combination (M1, S1, F1 = 000) represents the addresses of the program area RA and the end zone LO. The most significant bits M1, S1 and F1 and the addresses (M, S, F) of the program area RA and the end zone LO are combined. (M1, S1, F1 = 100) represents the addresses of the PCA region, the PMA region and the zero track. (M1, S1, F1 = 101) represents special information 1 (recording power) at reference speed, application code and type of disk identifier). (M1, S1, F1 = 110) represents special information 2 (start time of the zero track). (M1, S1, F1 = 111) represents special information 3 (start time of the end zone). In addition, as shown in FIG. 7, although additional information 1, additional information 2, and additional information 3 were reserved, they have not yet been determined. Special information is represented by M1 = "1", while additional information 1 through 3 is represented by additional information that is not an address.

In the optical disc 1 (CD-R), the sequence of frames in the zero track LI is determined as shown in FIG. As can be seen in FIG. 8, a sequence of 30 frames is defined. The frames number N, N + 10, N + 20, ... (with an interval of 10 frames) contain special information 1, special information 2 and special information 3. In frames with other numbers, the usual address information is placed.

Next, real addresses represented by time information expressed in minutes, seconds and frames will be described. The time information in each region of the RA program and the end zone LO starts with the value 00 minutes, 00 seconds, 00 frames and sequentially increases from this value. Time information exceeding 90 is recorded in the LI track zero. After 99 minutes, 59 seconds, 74 frames, the time information becomes 00 minutes, 00 seconds, 00 frames, and the program area of the RA starts from this value.

The characteristics of a standard CD-R, which is an example of optical disc 1, are defined in the Orange Book, which is a standard document. In a range that meets the Orange Book standard, the start position of the zero track has some edge. Figure 9 shows the edge of the starting position of the zero track LI. In a format in which the playing time or recording time of the optical disc 1 is 64 minutes (linear speed = 1.4 m / s and is constant), as described above, the minimum length of the zero track is LI = (02, 07, 48) , and the maximum length of the zero track is LI = (02, 14, 06) in the notation (M, S, F). Thus, the start time of the zero track can be selected from a value that meets the standard of the above “Orange Book”, namely, in the range from (97, 45, 69) to (97, 52, 27).

Similarly, in a format where the playback or recording time for optical disc 1 is 74 minutes (linear speed = 1.2 m / s and is constant), the minimum length of the zero track LI is (02, 28, 68) and the maximum length of zero track LI is (02, 36, 32) in the notation (M, S, F). Thus, the start time of the zero track can be selected from a value that meets the standard in the above Orange Book, namely, in the range from (97, 23, 43) to (97, 31, 07).

In accordance with this embodiment of the present invention, using the edge of the start time of the zero track, it is encoded so that its error can be detected automatically. The error checking unit 15 (see FIG. 1) determines whether there really is an error in the start time of the zero track. For example, coding is used to detect errors using CRCC (cyclic redundancy check code). In this case, assuming that the generation polynomial is g (x) = x ⁴ + x + 1 and the zero track start time information is T (x) = [M, S, F] (24 bits, 23rd order polynomial from x ) The four least significant bits of the F frames are selected so that the T (x) value can be precisely divided by g (x) (remainder = "0").

When the above encoding is performed to detect an error, the error checking unit 15 divides the start time of the zero track by the generation polynomial g (x) and determines whether or not the remainder is 0 so that an error can be detected in the start time of the zero track. For example, the value of g (x), which allows you to get a remainder equal to 0, is from 0 to F (in hexadecimal encoding). However, the binary decimal encoding does not represent a value from A to F, and the selection of the four least significant bits for frames F is limited. To solve this problem, a rule is preliminarily adopted, according to which, when the value takes one of the digits from A to F, "6" is added to the value. As a result, values from A to F in hexadecimal encoding can be converted to values from 0 to 5, respectively.

In another method, in addition to the generation polynomial described above, due to the generation polynomial g (x) = x ³ + x + 1, the three least significant bits of the frame F are selected so that the remainder of the division of the start time of the zero track by g (x) becomes 0. Moreover values from A to F, expressed in hexadecimal encoding, can be selected from values from 0 to 7.

In the second coding example, which allows to detect errors using the error checking unit 15, the digits (8 bits) from the group of frames F are selected so that when each digit M, S and F of the start time of the zero track is added (modulo 75), the result addition becomes equal to "0". (Module 75) is used because the frame numbers are selected from a value of 00 to a value of 74. In fact, suppose the start time of the zero track is 97 minutes, 24 seconds, Q frames, where Q is a character representing an undefined value. For example, the following formula is satisfied.

A value that satisfies formula (1) is (Q = 29). Thus, the value for frames is (29 frames). The error checking unit 15 performs addition according to the above formula c (modulo 75) and determines whether the result of addition is “0” or not, while determining whether or not an error is present in the start time of the zero track.

In the third encoding example with error detection using the error checking unit 15, the four least significant bits of the F frames are selected so that when each digit M, S, and F of the start time of the zero track is added (modulo 10), the result becomes 0. In fact, suppose that the start time of the zero track is 97 minutes, 24 seconds, 10 frames, the value of the four least significant bits is determined using the following formula.

A value that satisfies formula (2) is (Q = 7). Thus, the value for frames becomes equal (17 frames). The error checking unit 15 performs addition according to the above formula (modulo 10) and determines whether the addition result is equal to 0 or not so that a check is made whether or not an error is present in the start time of the zero track.

Since (module 10) is used as the value for the four least significant bits of the digits of the number of frames, one of the digits from 0 to 9 can be selected. This fully corresponds to the encoding requirements for determining the OSJ disc manufacturers (according to the Japan Orange Book) for disks Cd-r. Figure 10 shows an example of requirements for encoding the start time of the zero track for manufacturers (A, B, C, D, E, F, ..., G, H, ... I) in accordance with OSJ. The “1st code” of FIG. 10 applies to a format in which a disc playback duration is 74 minutes, while the “2nd code” is applied to a format in which a disc playback duration is 64 minutes. The result of the manufacturer’s determination is used to control the output level of the laser beam in recording mode for the CD-R disc as the optical disc 1.

10, as the 1st code (from 97 minutes, 24 seconds, 10 frames to 97 minutes, 24 seconds, 19 frames) are assigned, for example, to the manufacturer E. Similarly, values in the range (from 0 to 9) for the younger four frame bits are assigned to each manufacturer. Thus, when coding for error detection, due to addition to (modulo 10), one of the values is selected (from 0 to 9). As a result of this, the coding for detecting an error fully complies with the encoding requirements presented in FIG. 10.

In addition, OSJ codes (00 to 04) are assigned to cyanine, which is used as a coloring matter in record layer 23, while (05 to 09) are assigned phthalocyanine as a coloring organic matter, which is used in layer 23 records. To meet the requirements of the OSJ encoding, instead of adding an expression (modulo 75) or adding an expression (modulo 10), add an expression (modulo 5).

As a fourth example of coding for detecting an error using the error checking unit 15, error detection coding is performed for the start time of the zero track, which is recorded on the zero track LI, as special information 3. When the start time of the zero track is 17 minutes, 50 seconds, Q frames, as in the second example, the Q value for the frame is selected so that the addition result by the following formula (modulo 75) becomes equal to "0".

The value for frames that satisfies formula (3) is (Q = 08). Thus, the time information of 17 minutes, 50 seconds, 08 frames is recorded as the start time of the zero track. Of course, the start time of the zero track is a value that cannot exceed the value defined in the physical standard CD-R or similar specifications. RA software error depends on the value of the start time of the end zone. As a result, the recording capacity may be slightly reduced depending on the start time of the end zone. However, since the start time of the end zone is not affected by the manufacturer's QSJ code and the category code of the organic coloring material used for the recording layer 23, it can be said that high flexibility is achieved when choosing the start time of the end zone.

As a fifth coding example, which allows for error detection using the error checking unit 15, both the start time of the zero track and the start time of the end zone are used. When the start time of the zero track is 97 minutes, 24 seconds, 10 frames and the start time of the end zone is 17 minutes, 50 seconds, Q frames, the value of Q frames is selected so that the result of addition by the following formula (modulo 75) becomes "0 "

The value for the start time frames of the end zone, which satisfies formula (4), is (Q = 27). To detect an error, it is determined whether or not "0" is the result of adding the start time of the zero track and the start time of the end zone, which are read from the optical disk (modulo 75).

Next, a sixth encoding example will be described, allowing error detection using the error checking unit 15. In the sixth example, in addition to the start time of the zero track and / or the start time of the end zone, the constant K is used, which the drive contains (recording device or player). Suppose that the start time of the zero track is 97 minutes, 24 seconds, 10 frames, the start time of the final zone is 20 minutes, 15 seconds, 34 frames, and K = 25, the result of the addition of the following expression becomes 225.

97 + 24 + 10 + 20 + 15 + 34 + 25 = 225

In other words, a value is selected for the digits of the start time frames of the end zone. If the addition result does not become 225 using only one value of the frame digits, the value of the second digits is used. When the start time of the end zone is read, it is determined whether or not the result of addition 225 is equal, so that it is determined whether an error is present in the start time of the end zone. The value "225" is selected, because in this case the result of addition is 0 when adding (modulo 75). As in the above example, addition can be used (modulo 75). (Module 75) presents that the result of addition can be precisely divided. That is, this is different from the case when the result of the addition is "225".

Alternatively, two or more types of coding can be used to detect errors in the address information, such as the start time of the zero track, which can be used instead of one type of coding for error detection. For example, when adding an expression (modulo 10) and adding an expression (modulo 75), two types of address information can be generated, the addition of which becomes equal to "0". With respect to the drive constant K, when it is two types of constants K1 and K2, two types of address information can be generated.

In addition, in the above examples, all digits or bits of the address information, such as the start time of the zero track, are used. However, coding can be performed with error detection by skipping the block of address information (namely, the value of the least significant digit of the frames in the time information). In fact, for example, using the start time of the zero track and the start time of the end zone, assuming that the value of the lowest digit of the frames of the start time of the zero track is always “0”, error detection coding can be performed.

Next, a seventh example of error detection coding with the error checking unit 15 will be described. In the seventh example, each digit M, S, and F of the start time of the zero track is processed independently. Each digit is multiplied by a predetermined factor. In other words, the start time of the zero track is represented by two digits in binary decimal coding. Minutes (M) of the start time of the zero track are represented by two digits (M1 _i , M2 _i ). Minutes (S) of the start time of the zero track are represented by two digits (S1 _i , S2 _i ). Frames (F) of the start time of the zero track are represented by numbers (F1 _i , F2 _i ) of two digits. As expressed by the following formula, each digit M, S, and F of the start time of the zero track is processed independently. Each digit is multiplied by a predetermined factor, and then they are added together. F2 _{i is} determined so that the result of the calculation modulo z becomes equal to "0".

In this case, the coefficients from a to f may be the same or different from each other. Alternatively, some of the coefficients a to f may be the same. We can assume that the second and third examples are special examples of expressions represented by the above formulas (1) and (2). In other words, we can assume that the second example is an example in which, according to formula (6), coefficient a is equal to "10", coefficient b is equal to "1", coefficient c is equal to "10", coefficient d is equal to "1", coefficient e is "10", the coefficient f is "1" and the coefficient z is "75". Similarly, we can assume that the third example is an example in which all coefficients from a to f are equal to "1", and the coefficient z is equal to "10".

In the eighth error detection coding example using the error checking unit 15, is an example in which each digit M, S and F of the start time of the end zone is independently processed and each digit is multiplied by a predetermined coefficient. In other words, the start time of the end zone is represented by two digits in binary decimal coding. The minutes of the starting time of the final zone are represented by numbers (M1 _o , M2 _o ) from two digits. The seconds of the start time of the final zone are represented by two digits (S1 _o , S2 _o ). The starting time frames of the final zone are represented by numbers (F1 _o , F2 _o ) of two digits. As expressed by the following formula, each digit M, S, and F of the start time of the end zone is independently processed. Each digit is multiplied by a predetermined factor. F2 _{o is} determined so that the result of addition modulo z becomes equal to "0".

Both the start time of the zero track and the start time of the end zone can be used. In this case, the minutes of the zero track start time are represented by two digits (M1 _i , M2 _i ). The seconds of the zero track start time are represented by two digits (S1 _i , S2 _i ). Zero track start time frames are represented by two digits (F1 _i , F2 _i ). The minutes of the starting time of the final zone are represented by numbers (M1 _o , M2 _o ) from two digits. The seconds of the start time of the final zone are represented by two digits (S1 _o , S2 _o ). The starting time frames of the final zone are represented by numbers (F1 _o , F2 _o ) of two digits. As expressed by the following formula, each digit M, S and F of the start time of the zero track and each digit M, S and F of the start time of the end zone are independently processed. Each digit is multiplied by a predetermined coefficient and then they are added together. F2 _i and F2 _{o are} determined so that the result of addition modulo z becomes equal to "0".

In accordance with one embodiment of the present invention, the result of detecting the error checking unit 15 is supplied to the control unit 13. The control unit 13 controls the recording or playback operation of the drive in accordance with the result of the detection of the error checking unit 15. The control unit 13 may control such an operation in various ways.

In recording mode, the optical sensor 3 reads information from the zero track LI of the loaded optical disk 1. In addition to the normal operation of the CD-R drive, the error checking unit 15 checks for errors using the address information or using both the address information and the constant K. When the result the determination of the error checking unit 15 represents that the address information contains an error, the control unit 13 prohibits writing data to the program area RA of the optical disk 1. In contrast, when the result of the determination of the error checking unit 15 is ku represents that the address information does not contain an error, the control unit 13 allows writing data to the program area RA of the optical disk 1. When the control unit 13 prohibits writing data to the program area RA of the optical disk 1, the control unit 13 causes a message to be displayed on the display 16 of the drive, which represents that the data could not be written due to an error being found. In other words, only when the address information does not contain an error, data can be recorded on the optical disk 1.

Similarly, in playback mode, an error on the loaded disc 1 is checked in the same manner as in the recording mode. When the result of the determination of the error checking unit 15 represents that the address information that has been read from the zero LI of the loaded optical disc contains an error, the error checking unit 15 prohibits the reproduction of data recorded on the optical disc 1. In contrast, when the result of determining the error checking unit 15 represents that the address information does not contain an error, the control unit 13 controls the optical sensor 3 so that it can reproduce the data recorded on the optical disk 1. In other words, only when the information the address that is read from the optical disk 1 does not contain an error, the data recorded in this area of the RA program of the optical disk 1 can be reproduced. When the reproduction of the optical disk 1 is prohibited, due to the fact that an error was found in the address information that was read from the optical disk 1, an error message is displayed on the drive display 16. As described above, when an error is detected in the address information, in addition to the process of prohibiting the recording / playback of the loaded optical disc 1, the loaded optical disc 1 can be forcibly unloaded from the drive device. At this point, an error message may be displayed on the display 16.

As the optical disc 1, a recordable optical disc (for example, a CD-R disc) can be recorded and reproduced by various recording and / or reproducing devices. Some users want to use cheap, commercially available CD-R discs, which may have some problems. From this point of view, recording and reproducing devices that can record and play back data from / to CD-R discs can operate differently when an error is detected in the recording mode and the playback mode.

As an example of operation in recording and playback modes, when an error is detected in the start time of the zero track or the like (for example, in the information of the address of the start time of the zero track, the information of the address of the start time of the end zone, the information of the address of the start time of the zero track and the start time of the end zone, or address information that represents the position of certain recorded data in the area of the RA program), although it will be forbidden to write data to a loaded optical disc, if It is allowed to play data from a loaded optical disc. In other words, there are situations where, although there is an error in the read address information, the data was written to the loaded optical disc using another device. When an error is detected in the manner described above, if it is forbidden to reproduce data from a loaded optical disc, although the data was recorded on this disc, this data will not be reproduced at all. To solve this problem, if an error is detected in the address information such as the start time of the zero track, data will not be allowed to be written to the loaded optical disc. However, it will be allowed to play data from the loaded optical disc. Such recording and playback operations are controlled by a control unit that controls the operation of the recording and reproducing device. In the following examples, the operation of the recording and reproducing devices is controlled by the device control unit.

As another example of operation in the recording and playback modes, when an error is detected in the address information, such as the start time of the zero track on the loaded optical disc, data will not be allowed to be written to the loaded optical disc. In addition, when data is being played back from a loaded optical disc, an error message is displayed on the device display to alert the user that there is a high probability of an error. In this case, it is allowed to reproduce data from a loaded optical disc. For example, when data is written to a loaded optical disc, if an error is found in the address information, such as the start time of the zero track, the error message “There is a risk of error for this disc” may appear on the display of the device. An audible alarm may sound. A light bulb or similar may light up. Thus, the user is warned about an error. In addition, it is forbidden to write data to a loaded optical disc. Thus, when an error message is displayed on a display or similar device, the user may know why the data cannot be written to the optical disc. As another example of the operation in the recording and playback modes, if an error is detected in the address information, such as the start time of the zero track of the loaded optical disc, when data is recorded and played back to / from the loaded optical disc, the user is warned about the error. However, data is allowed to be recorded and played back to / from a loaded optical disc. For example, some users want to use commercially available, cheap optical discs, which may cause an error in recording mode and playback mode. For such users, when an error is detected in the address information of the loaded optical disk, the error message "It is not recommended to use this disk" may be displayed on the display unit of the device such as a display. Alternatively, an audible alarm may be generated. Alternatively, a light bulb or similar device may light up. Thus, before the recording or playback operation is performed after the optical disc is loaded, the user is warned about this. However, it is permitted to record and play back data. Thus, such users can use cheap discs that are commercially available, even if there is a risk of error.

As another example of the operation in the recording and playback modes, when an error is detected in the address information, such as the start time of the zero track, which is read from the loaded optical disc, in the recording mode, the user is warned in the manner described. However, it is permitted to record data on a loaded optical disc. In addition, it is allowed to reproduce data from a loaded optical disc. In this case, users can use cheap, commercially available discs for which a problem such as an error in the recording or playback mode is likely to occur. In this example, when data is played back from a loaded disc since an error message is not displayed on a display unit such as a device display, users will not receive information that they do not need.

In addition to detecting errors in the address information, such as the start time of the zero track, which is read from the optical disk 1, the loaded optical disk 1 can be detected. In other words, even if the address information can be correctly read from the loaded optical disk 1, when the result of detecting the error, corresponding to the error detection code of the address information read from the loaded optical disk 1 does not satisfy the condition for the absence of an error, it is determined that the address information which ityvaetsya from the loaded optical disk 1 includes an error. In other words, it is determined that an optical disc whose address information contains an error is not a required disc. As a result, a loaded disk can be determined in accordance with the address information read out.

In other words, for an optical disk 1 suitable for a recording and reproducing apparatus, address information such as a start time of a zero track is pre-recorded on the optical disk 1 such that a value calculated in accordance with one of formulas (1) to (8) , becomes a predefined value. After the optical disk has been loaded into the recorder, it reads the address information, such as the start time of the zero track, from the loaded optical disk using the optical sensor 3, calculates the read address information and determines whether or not the loaded optical disk is suitable for the device in accordance with the counting result (namely, depending on whether or not the address information contains an error). When a certain result represents that the loaded optical disk is an optical disk suitable for the device, it is allowed to write data to the program area RA of the loaded optical disk 1. In contrast, when the determination result represents that the loaded optical disk is not an optical disk, suitable for this device, it is forbidden to write data to a loaded optical disc. When it is determined that the loaded optical disk is not an optical disk suitable for the device, a warning message such as “It is not recommended to use this disk. Caution with its use” may be displayed on a display unit such as the drive display 16. Alternatively, an audible alarm may be generated. Alternatively, a light bulb or similar device may light up. As a result, the user is warned about this.

Similarly, when an optical disk is loaded into the device, address information such as the start time of the zero track is read from the loaded optical disk. The address information that has been read from the loaded optical disk is calculated in accordance with one of the above formulas (1) to (8) so that it is determined whether or not the loaded optical disk is a disk suitable for the device. When a certain result represents that the loaded optical disk is an optical disk suitable for the device, it is permitted to reproduce data from the loaded optical disk. In contrast, when a certain result indicates that the loaded optical disk is not suitable for this device, it is forbidden to play data from the loaded optical disk. When the determination result indicates that the loaded optical disk is not an optical disk suitable for the device, a message such as “This disk is not recommended. Caution with its use” may be displayed on a display unit such as the drive display 16. Alternatively, an audible alarm can be used. Alternatively, a light bulb or the like may light up. As a result, the user is warned about this.

An writable optical disc (e.g., a CD-R disc) as the optical disc 1 can be recorded and reproduced on various recording and reproducing devices. Knowing that cheap, commercially available drives may not be suitable for this device, some users, however, may want to use them. From this point of view, when the determination result represents that the loaded optical disc is not a disc suitable for a recording and reproducing apparatus that records and reproduces data on / from the optical disc CD-R, the apparatus may operate differently in the recording mode and in play mode.

As an example of operation in the recording mode and in the playback mode, in the case where the determination result represents that the loaded optical disc is not a disc suitable for the device, when the determination result corresponding to the start time of the zero track or similar information (for example, address information start time of the boot track, address information of the start time of the end zone, information of the address of the start time of the boot track and the start time of the end zone or information If the address, which represents the position of certain data recorded in the program area), represents that the loaded optical disk is not an optical disk suitable for this device, it is forbidden to write data to the program area of the loaded optical disk. However, it is permitted to reproduce data from a loaded optical disc. In other words, even if the loaded optical disc is not an optical disc suitable for the device, data could be recorded to it on another device. Thus, if data cannot be recorded on an optical disc that is not suitable for this device, it should be possible to reproduce data on the original device. This reduces performance. However, when the result of determining the corresponding address information, such as the start time of the boot track, indicates that the loaded optical disk is not an optical disk suitable for the device, it will be prohibited to write new data to the loaded optical disk. Instead, it is permitted to reproduce data from a loaded optical disc.

As another example, in the case where the determination result represents that the loaded optical disk is not an optical disk suitable for the device, when the determination result corresponding to the address information, such as the start time of the boot track read from the loaded optical disk, represents, Since the loaded optical disc is not an optical disc suitable for the device, data cannot be written to the loaded optical disc. In addition, when data is being played back from a loaded optical disc, an error message is displayed on a display unit or the like device. The user is warned by this message, which indicates that the loaded optical disc is probably not to be used. However, the data is permitted to be reproduced. For example, in recording mode, when the determination result corresponding to the start time information of the boot track or similar information that is read from the loaded optical disk represents that the loaded optical disk is not a disk suitable for this device on a display unit or similar device device a warning message may be displayed, such as "This drive is not recommended. Use with caution." Alternatively, an audible alarm may be generated. Alternatively, a light bulb or similar device may light up. As a result, the user is warned. In addition, it is forbidden to write data to a loaded optical disc. When such an error message is displayed, the user may know the reason why the data could not be written to the loaded disc.

As another example, in the case where the determination result represents that the loaded optical disk is not an optical disk suitable for the device, when the determination result corresponding to the address information such as the start time of the boot track or similar information represents that the loaded optical the disk is not an optical disk suitable for the device, a warning is issued to the user both in the recording mode and the playback mode. However, it is allowed to record data on a loaded optical disc and play back from it. For example, knowing that commercially available, cheap discs often have the problem of an error in the recording mode and in the playback mode, some users, however, may use them. In this case, when an optical disk that is not suitable for this device is loaded into it, in accordance with the address information that is read from the loaded optical disk, a display unit or a similar device may display an error message such as "This disk not recommended. Caution with its use. " Alternatively, an audible alarm may be generated. Alternatively, a light bulb or similar device may light up. As a result, the user is warned about this. However, data is allowed to be written to and played back from a loaded optical disc. Thus, such users can use cheap disks, knowing that there is a certain risk of error when using them.

As another example, in the case where the determination result represents that the loaded optical disk is not an optical disk suitable for the device, when the determination result corresponding to the address information, such as the start time of the boot track or similar information that is read from the loaded optical disk, represents that the loaded optical disk is not a disk suitable for the device, in recording mode, the user is warned in the manner described above. However, it is allowed to write data to a loaded optical disc. In addition, it is allowed to reproduce data from a loaded optical disc. In this case, some users may use cheap, commercially available drives, which may have an error occurrence problem. When data is played back from a loaded optical disc, since the error message is not displayed, the user will not be embarrassed by unnecessary messages.

In addition, depending on the type of optical disc loaded in the device, electrical characteristics, such as servo characteristics, mechanical characteristics, or optical characteristics, can be varied and optimized. As described above, error detection of address information in accordance with the present invention can be used to determine one of many types of disks. Using the result of determining the disk, in accordance with an error found from the address information, if the disk has problems, the electrical characteristics of the servo mechanism, mechanical characteristics or optical characteristics of the device for working with a loaded optical disk can be changed.

In general, in addition to the basic specifications, the above standard for a CD-R disc, etc. defines some tolerances for various control values, such as the degree of eccentricity and track pitch, to compensate for production tolerances, etc. drives. On the other hand, a specific application of a CD-R disc requires more stringent specifications than tolerances in terms of eccentricity and track pitch. For example, a portable audio recording and reproducing device, and a portable video photo recording and reproducing device should take into account the influence of vibrations, etc. Thus, in this case, the use of an optical disc with the ability to record as a recording medium (namely, a CD-R disc) may require technical conditions closer to the control values. Error detection of address information in accordance with the present invention can be used to determine an optical disc that meets the requirements of portable audio recording and reproducing devices and portable photographing recording and reproducing devices.

Depending on various applications, such as portable audio recording and reproducing devices, photographing devices and a conventional computer drive, various types and materials of CD-R discs used as recordable optical discs may be selected which differ in degree from the required values eccentricity and stride tracks. In this case, when an optical disc (CD-R) is used in a portable video-photographing device that is not suitable for this device, a problem may occur. However, a portable audio recording and reproducing device can be used without problems with both an optical disc suitable for a given device and optical discs suitable for a portable video photographing device. In addition, in a conventional computer drive, an optical disc suitable for a portable audio recording and reproducing device, an optical disc suitable for a portable video-photographing device, and an optical disc suitable for a conventional computer drive can be used without any problems. Thus, combinations of devices and types of drives suitable for them can be complex. However, the method of determining an optical disc in accordance with the present invention allows one to determine from a plurality of types of discs a disc that is not suitable for the device.

The present invention is not limited to the above embodiment. Various other changes, exceptions and additions to its form and details may be made without departing from the spirit and scope of the present invention. For example, instead of the addresses of the start positions of the boot track and the end zone, the addresses of the end positions and address information that determines their length (width) can be used. In addition, just like the addresses that determine the position of the boot track and the end zone, addresses that determine the positions of certain data recorded in the program area can be used. For example, in the boot track of a CD or CD-ROM, data such as TOC (table of contents), absolute times at which individual movements begin, are recorded. Thus, as described above, coding for error detection can be performed for the absolute time at which the first movement begins (namely, the position that begins two or three seconds after the start position of the program area).

Like the above-described CD-R disc, the present invention can be applied to a CD-RW disc on which almost the same information is recorded as on a CD-R disc, in accordance with ATIP. In addition, as with writable discs, the present invention can be applied to read-only discs, such as CDs and CD-ROMs. In addition, in the case of a CD-R disc and a CD-RW disc, the present invention can be applied to recorded address data, without pre-recorded address information, such as ATIP.

In addition, the present invention can be applied to binary encoded address information instead of binary decimal encoded time information (minutes, seconds, frames). For example, the first example of error detection coding using CRCC can be applied to binary encoded addresses. A binary encoding can represent more addresses than a binary decimal encoding, with the same number of bits. In addition, in accordance with the present invention, the address information is encoded so that an error of the address information, such as the start time of the boot track or the like, can be detected automatically. Thus, the reliability of the address information can be improved. For example, when error tolerance is improved for the start time of the boot track, data can be stably recorded and reproduced. In addition, in accordance with the present invention, it is not required to apply new parity check codes. Thus, the present invention can be applied to recording media that have been standardized for a signal format, etc. Furthermore, in accordance with the present invention, since an error detection result is used to determine recording media, recording / reproducing devices can only use the corresponding recording medium. In this case, by performing many types of coding for error detection, many types of recording media can be determined.

In accordance with the present invention, address information, such as the start time of the boot track, is encoded so that disk detection can be performed. Thus, after determining whether a given disc is a usable disc, data can be recorded, played back.

Industrial applicability

The present invention is suitable for recording media, such as a CD-R disc and CD-RW discs, for a method of recording data and a device for recording and reproducing data on / from a CD-R disc and a CD-RW disc, a method and apparatus for reproducing data and a method and apparatus for recording and reproducing data.

Claims (124)

1. A method of recording and / or playback for a recording medium, comprising the following steps: reading address information from a recording medium, wherein the recording medium has at least a first region and a second region, data is recorded in the first region, the first region follows the second region , and the address information represents the positions of the second area, error detection corresponding to the error detection code by which the address information that was read from the recording medium is encoded, and when the result of the step of determining edstavlyaet that was an error in the address information that has been read from the recording medium, an indication of at least the user that an error has been detected. 2. The method according to claim 1, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information that was read from the recording medium, it is forbidden to write data to the first area of the recording medium. 3. The method according to claim 2, characterized in that it further comprises a step: when the result of the detection step represents that no error was found in the address information that was read from the recording medium, it is allowed to write data to the first region of the recording medium. 4. The method according to claim 1, characterized in that it further comprises the step of: when the result of the detection step represents that an error was detected in the address information that was read from the recording medium, it is forbidden to read data recorded in the first region of the recording medium. 5. The method according to claim 1, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information that was read from the recording medium, it is allowed to reproduce data recorded in the first region of the recording medium. 6. The method according to claim 1, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information that was read from the recording medium, it is forbidden to write data to the first area of the recording medium and it is allowed to reproduce the data, recorded in the first area. 7. The method according to claim 1, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information that was read from the recording medium, it is allowed to write data to the first region of the recording medium and reproduce the data recorded to the first area. 8. The method according to claim 1, characterized in that the indicating step is performed by displaying an error message when the result of the detection step represents that an error was detected in the address information that was read from the recording medium. 9. The method according to claim 1, characterized in that the indicating step is performed by generating an audible alarm when the result of the detection step represents that an error has been detected in the address information that has been read from the recording medium. 10. The method according to claim 1, characterized in that the detection step is performed by calculating the address information that was read from the recording medium and detecting whether or not the address information that was read from the recording medium contains an error, depending on or not, the result of calculating a predetermined value. 11. The method of claim 10, wherein the address information is information that represents at least the starting position of the second region. 12. The method according to claim 11, characterized in that the address information represents at least minutes, seconds and frames. 13. The method according to p. 12, characterized in that the part of the data, which represents at least the frames of the address information, varies depending on the data that represents the manufacturer of the recording medium. 14. A recording and / or reproducing method for a recording medium, comprising the steps of: reading address information from a recording medium, wherein the recording medium has at least a first region and a second region, data is recorded in the first region, the first region follows the second region and the address information represents the position of the second region; error detection in accordance with the error detection code by which the address information that was read from the recording medium is encoded, and when the result of the detection step represents that the error was detected in the address information that was read from the recording medium, data recording is prohibited, at least to a first region of the recording medium. 15. The method according to 14, characterized in that it further comprises a step: when the result of the detection step represents that there was no error in the address information that was read from the recording medium, it is allowed to write data to the first region of the recording medium. 16. The method according to 14, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information that was read from the recording medium, it is allowed to reproduce data recorded in the first region of the recording medium. 17. The method according to 14, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information that was read from the recording medium, it is forbidden to reproduce data recorded in the first region of the recording medium. 18. The method according to 14, characterized in that it further comprises the step of: when the result of the detection step represents that an error was detected in the address information that was read from the recording medium, indicating at least to the user that an error was detected. 19. The method according to p. 18, characterized in that the step of indicating is performed by displaying an error message when the result of the detection step represents that an error was detected in the address information that was read from the recording medium. 20. The method according to p, characterized in that the indicating step is performed by generating an audible alarm when the result of the detection step represents that an error was detected in the address information that was read from the recording medium. 21. The method according to 14, characterized in that the detection step is performed by calculating the address information that has been read from the recording medium and determining whether or not the address information that has been read from the recording medium contains an error, depending on or not, the result of calculating a predetermined value. 22. The method according to item 21, wherein the address information is information that represents at least the starting position of the second region. 23. The method according to item 22, wherein the address information represents at least minutes, seconds and frames. 24. The method according to item 23, wherein the part of the data, which represents at least the frames of the address information, varies in accordance with the data that represent the manufacturer of the recording medium. 25. A method of recording and / or reproducing for a recording medium, comprising the steps of: reading address information from a recording medium, wherein the recording medium has at least a first region, a second region and a third region, data is recorded in the first region, the first region follows the second area, the third area follows the data recording area, the address information is at least one of the first address information and the second address information, the first address information represents the position w In another area, the second address information represents the position of the third area; error detection in accordance with the error detection code with which the address information of at least one of the first address information and the second address information that has been read from the recording medium is encoded; and when the result of the detection step represents that an error has been detected in the address information of at least one first address information and second address information that has been read from the recording medium, indicating to at least the user that an error has been detected. 26. The method according A.25, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information of at least one of the first address information and the second address information that was read from the recording medium , writing data to the first area of the recording medium is prohibited. 27. The method according to p. 26, characterized in that it further includes a step: when the result of the detection step represents that no error was found in the address information of at least one of the first address information and the second address information that was read from the medium recording, data recording is allowed in the first area of the recording medium. 28. The method according A.25, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information of at least one of the first address information and the second address information that were read from the recording medium , it is forbidden to reproduce data recorded in the first area of the recording medium. 29. The method according A.25, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information of at least one of the first address information and the second address information that were read from the recording medium is allowed to reproduce data recorded in the first region of the recording medium. 30. The method according A.25, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information of at least one of the first address information and the second address information that were read from the recording medium , it is forbidden to record data in the first area of the recording medium, and it is allowed to reproduce data recorded in the first area. 31. The method according A.25, characterized in that it further comprises a step: when the result of the detection step represents that an error was detected in the address information of at least one of the first address information and the second address information that were read from the recording medium is allowed to record data in a first region of a recording medium and reproduce data recorded in a first region. 32. The method according A.25, characterized in that the step of indicating is performed by displaying an error message when the result of the detection step represents that an error has been detected in the address information of at least one of the first address information and the second address information, which were read from the recording medium. 33. The method according A.25, characterized in that the indicating step is performed by generating an audible alarm when the result of the detection step represents that an error has been detected in the address information of at least one of the first address information and the second address information, which were read from the recording medium. 34. The method according A.25, characterized in that the detection step is performed by calculating the address information of at least one of the first address information and the second address information that has been read from the recording and detection media, contains or not address information that was read from the recording medium, an error, depending on whether or not the result of the calculation is equal to a predetermined value. 35. The method according to clause 34, wherein the first address information is information that represents at least the starting position of the second region. 36. The method according to clause 35, wherein the first address information represents at least minutes, seconds and frames. 37. The method according to clause 36, wherein the part of the data that represents at least the frames of the first address information is changed in accordance with the data that represents the manufacturer of the recording medium. 38. The method according to clause 34, wherein the second address information is information that represents at least the starting position of the third region. 39. The method according to § 38, wherein the second address information represents at least minutes, seconds and frames. 40. The method according A.25, characterized in that the detection step is performed by calculating the address information, both the first address information and the second address information that was read from the recording medium, and determining whether or not the first address information and the second information addresses that were read from the recording medium, an error depending on whether or not the result of the calculation is equal to a predetermined value. 41. The method according to p, characterized in that the information of the first address is information that represents at least the starting position of the second region. 42. The method according to paragraph 41, wherein the first address information represents at least minutes, seconds and frames. 43. The method according to § 42, wherein the part of the data, which represents at least the information frames of the first address, varies depending on the data that represents the manufacturer of the recording medium. 44. The method according to § 42, wherein the second address information is information that represents at least the starting position of the third region. 45. The method according to item 44, wherein the second address information represents at least minutes, seconds and frames. 46. The method according to item 45, wherein the part of the data, which represents at least the frames of the information of the second address, changes in accordance with the data that represent the manufacturer of the recording medium. 47. A recording and / or reproducing device for a recording medium comprising a head for recording or reproducing data on / from a recording medium having at least a first region and a second region, the data being recorded in the first region and the first region following the second area; an error checking unit for detecting an error in accordance with an error detection code by which address information that has been read from the recording medium by the indicated head is encoded, the address information representing the position of the second region; and a control unit for indicating to at least the user that an error has been detected when an error detection result of said error checking unit represents that an error has been detected in the address information that has been read from the recording medium. 48. The device according to clause 47, wherein said control unit prohibits writing data to a first region of a recording medium when an error detection result of said error checking unit represents that an error has been detected in the address information that has been read from the recording medium. 49. The device according to p. 48, characterized in that the control unit allows data recording in the first area of the recording medium, when the error detection result of the specified error checking unit represents that the error was not detected in the address information that was read from the recording medium . 50. The device according to clause 47, wherein the specified control unit prohibits the reproduction of data recorded in the first region of the recording medium, when the result of the detection of the specified error checking block represents that an error was detected in the address information that was read from the recording medium . 51. The device according to item 47, wherein the specified control unit allows the playback of data recorded in the first region of the recording medium when the error detection result of the specified error checking unit represents that an error was detected in the address information that was read from the medium records. 52. The device according to clause 47, wherein the specified control unit prohibits the recording of data in the first region of the recording medium and allows the playback of data recorded in the first region when the error detection result of the specified error checking block represents that an information error has been detected addresses that were read from the recording medium. 53. The device according to clause 47, wherein said control unit permits writing data to a first area of a recording medium and reproducing data recorded in a first area when an error detection result of said error checking unit represents that an error has been detected in the address information that was read from the recording medium. 54. The device according to clause 47, characterized in that it further comprises a display unit, in which the specified control unit determines that the display unit displays an alarm message when the error detection result of the specified error checking unit represents that an error has been detected in the address information that was read from the recording medium. 55. The device according to clause 47, wherein said control unit generates an audible alarm when an error detection result of said error checking unit represents that an error has been detected in the address information that has been read from the recording medium. 56. The device according to clause 47, wherein the specified control unit calculates the address information that has been read from the recording medium, and determines whether or not the address information that was read from the recording medium contains an error, depending on whether or no calculated result to a predetermined value. 57. The device according to p, characterized in that the address information is information that represents at least the starting position of the second region. 58. The device according to clause 57, wherein the address information represents at least minutes, seconds and frames. 59. The device according to § 58, wherein the part of the data that represents at least the frames of the address information is changed in accordance with the data that represents the manufacturer of the recording medium. 60. A recording and / or reproducing device for a recording medium, comprising a head for recording or reproducing data on / from the recording medium, the recording medium comprising at least a first region and a second region, the data is recorded in the first region, and the first region follows after the second area; an error checking unit for detecting an error in accordance with a code for detecting an error by which address information that has been read from the recording medium by the indicated head is encoded, the address information representing the position of the second region; and a control unit for prohibiting writing data to at least a first region of the recording medium when an error detection result of said error checking unit represents that an error has been detected in the address information that has been read from the recording medium. 61. The device according to p. 60, characterized in that said control unit permits writing data to a first region of a recording medium when an error detection result of said error checking block indicates that an error was not found in the address information that was read from the recording medium . 62. The device according to p. 60, characterized in that the control unit prohibits the reproduction of data recorded in the first region of the recording medium when the error detection result of the specified error checking unit represents that the error was detected in the address information that was read from the medium records. 63. The device according to p. 60, characterized in that said control unit allows reproducing data recorded in a first region of a recording medium when an error detection result of said error checking unit represents that an error has been detected in the address information that has been read from the medium records. 64. The device according to p. 60, characterized in that said control unit prohibits writing data to a first region of a recording medium and permits playback of data recorded in a first region when an error detection result of said error checking block indicates that an information error has been detected. addresses that were read from the recording medium. 65. The device according to p. 60, characterized in that the control unit allows you to record data in the first region of the recording medium and play back the data recorded in the first region when the error detection result of the specified error checking block represents that an error has been detected in the address information that was read from the recording medium. 66. The device according to p. 60, characterized in that it further comprises: a display unit, wherein said control unit determines that said display unit should display an alarm message when an error detection result of said error check unit represents that an error has been detected in the address information that has been read from the recording medium. 67. The device according to p. 60, wherein said control unit generates an audible alarm when an error detection result of said error checking unit indicates that an error has been detected in the address information that has been read from the recording medium. 68. The device according to p. 60, characterized in that said control unit calculates address information that has been read from the recording medium and detects whether or not the address information that was read from the recording medium contains an error, depending on whether or not result of calculations to a predetermined value. 69. The device according to p, characterized in that the address information is information that represents at least the starting position of the second region. 70. The device according to p, characterized in that the address information represents at least minutes, seconds and frames. 71. The device according to item 70, wherein the part of the data, which represents at least the frames of the address information, changes in accordance with the data that represent the manufacturer of the recording medium. 72. A recording and / or reproducing device for a recording medium, comprising a head for recording or reproducing data on / from the recording medium, the recording medium comprising at least a first region, a second region and a third region, the data being recorded in the first region, moreover, the first region follows the second region, the third region follows the data recording region; an error checking unit for detecting an error corresponding to an error detection code, with which the address information of at least one of the first address information and the second address information that has been read from the recording medium using the indicated head is encoded; and a control unit for indicating to at least the user that an error has been detected when an error detection result of said error checking unit represents that an error has been detected in the address information of at least the first address information and the second address information that were read from the recording medium. 73. The device according to paragraph 72, wherein said control unit prohibits writing data to the first region of the recording medium when the result of detecting said error checking unit represents that an error has been detected in the address information of at least one of the information of the first addresses and second address information that were read from the recording medium. 74. The device according to p, characterized in that the control unit allows you to record data in the first region of the recording medium when the error detection result of the specified error checking unit represents that the error was not detected in the address information of at least one of information of the first address and information of the second address, which were read from the recording medium. 75. The device according to p. 72, characterized in that said control unit prohibits reading data recorded in the first area of the recording medium when the error detection result of said error checking unit represents that an error has been detected in the address information of at least one from information of the first address and information of the second address that were read from the recording medium. 76. The device according to paragraph 72, wherein said control unit allows reproducing data recorded in a first region of a recording medium when an error detection result of said error checking unit represents that an error has been detected in the address information of at least one from information of the first address and information of the second address that were read from the recording medium. 77. The device according to p. 72, characterized in that the control unit prohibits writing data to the first area of the recording medium and allows you to play back the data recorded in the first area when the result of the detection of the specified error checking unit represents that an error has been detected in the address information at least one of the first address information and the second address information that has been read from the recording medium. 78. The device according to p. 72, characterized in that said control unit permits recording data in a first area of a recording medium and reproducing data recorded in a first area when an error detection result of said error checking unit represents that an error has been detected in the address information at least one of the first address information and the second address information that has been read from the recording medium. 79. The device according to p. 72, characterized in that it further comprises a display unit, in which the specified control unit determines that the display unit should display an alarm message when the error detection result of the specified error checking unit represents that an information error has been detected addresses of at least one of the first address information and the second address information that has been read from the recording medium. 80. The device according to paragraph 72, wherein said control unit generates an audible alarm when an error detection result of said error checking unit represents that an error has been detected in the address information of at least one of the first address information and information second addresses that were read from the recording medium. 81. The device according to claim 72, wherein said control unit calculates address information of at least one of the first address information and the second address information that has been read from the recording medium, and determines whether or not the address information contains of at least one of the information of the first address and the information of the second address that were read from the recording medium, the error depends on whether or not the result of the calculation is equal to a predetermined value. 82. The device according to p, characterized in that the information of the first address is information that represents at least the starting position of the second region. 83. The device according to paragraph 82, wherein the first address information represents at least minutes, seconds and frames. 84. The device according to p, characterized in that the part of the data that represents at least the frames of the first address information is changed in accordance with the data that represents the manufacturer of the recording medium. 85. The device according to p, characterized in that the information of the second address is information that represents at least the starting position of the third region. 86. The device according to p, characterized in that the information of the second address represents at least minutes, seconds and frames. 87. A recording medium having a first region into which data is recorded, a second region followed by a first region, and a third region followed by a first region in which address information that represents at least the position of the second region is recorded using the error detection process using the error detection code, and in which the address information is a value that satisfies a predetermined expression. 88. The recording medium according to p, characterized in that the address information is information that represents at least the starting position of the second region. 89. The recording medium according to p, characterized in that the address information represents at least minutes, seconds and frames. 90. The recording medium according to p, characterized in that the part of the data that represents at least the frames of the address information is changed in accordance with the data that represents the manufacturer of the recording medium. 91. The recording medium of claim 87, wherein the additional address information that represents the position of the third region is recorded by the error detection process using the error detection code, and in which the address information is a value that satisfies a predetermined calculation expression . 92. The recording medium according to paragraph 91, wherein the additional address information is information that represents at least the starting position of the third region. 93. The recording medium according to paragraph 92, wherein the additional address information represents at least minutes, seconds and frames. 94. The recording medium according to p, characterized in that the recording medium is an optical disc with the ability to record. 95. A recording medium having a first region in which data is recorded, a second region followed by a first region, and a third region followed by a first region in which address information that represents at least the position of the second region is recorded using the error detection process using the error detection code, and in which the block of the least significant bits of the address information is selected in accordance with the data that represent the manufacturer. 96. The recording medium according to paragraph 95, wherein the address information is information that represents at least the starting position of the second region. 97. The recording medium according to p, characterized in that the address information represents at least minutes, seconds and frames. 98. The recording medium according to paragraph 95, wherein the address information is a value that satisfies a predetermined expression. 99. The recording medium according to paragraph 95, wherein the additional address information that represents the position of the third region is recorded using the error detection process using the error detection code, and the address information is a value that satisfies a predetermined expression for calculation. 100. The recording medium according to claim 99, wherein the additional address information is information that represents at least the starting position of the third region. 101. The recording medium according to p, characterized in that the additional address information represents at least minutes, seconds and frames. 102. The recording medium according to paragraph 95, wherein the recording medium is a recordable optical disc. 103. A method for determining a recording medium, comprising the steps of: reading address information from a recording medium loaded into the device, the recording medium having at least a first region, a second region and a third region, data is recorded in the first region, the first region follows the second area, the third area follows the data recording area, the address information is at least one of the first address information and the second address information, the first address information representing the second position th region, and the second address information represents the position of the third region; detecting an error in accordance with an error detection code by which the address information of at least one of the first address information and the second address information that has been read from the recording medium is encoded; and determining whether or not the loaded recording medium is suitable for the device in accordance with the result of the detection step. 104. The method according to p. 103, characterized in that the determination step is performed by determining that the loaded recording medium is not suitable for this device, and at least instructing the user about it when the result of the detection step represents that an error has been detected in the address information of at least one first address information and second address information that has been read from the recording medium. 105. The method of claim 104, wherein the determining step is performed by counting the address information of at least one of the first address information and the second address information that has been read from the recording medium, and determining whether or not the recording medium is loaded into the device, suitable for it, depending on whether or not the result of the calculation is equal to a predetermined value. 106. The method of claim 105, wherein the first address information is information that represents at least the starting position of the second region. 107. The method according to p, characterized in that the information of the first address is at least minutes, seconds and frames. 108. The method according to p. 107, wherein the part of the data, which represents at least the frames of the first address information, changes in accordance with the data that represent the manufacturer of the recording medium. 109. The method according to p. 103, characterized in that the determination step is performed by counting the address information, both in relation to the first address information and in relation to the second address information that has been read from the recording medium, detecting whether or not the information has the first address and the information of the second address that were read from the recording medium, an error, depending on whether or not the result of the calculation is equal to a predetermined value, and determining that the recording medium loaded in the device is not suitable for I it, when the detection result represents that the first address information and second address information contains an error. 110. The method according to p. 109, wherein the first address information is information that represents at least the starting position of the second region. 111. The method according to p, characterized in that the information of the first address represents at least minutes, seconds and frames. 112. The method according to p. 111, characterized in that the data part that represents at least the frames of the first address information is changed in accordance with the data that represents the manufacturer of the recording medium. 113. The method according to p. 109, wherein the second address information is information that represents at least the starting position of the third region. 114. The method according to p, characterized in that the second address information represents at least minutes, seconds and frames. 115. A method of recording and / or reproducing for a device in which a recording medium is used, comprising the steps of: reading address information from a recording medium loaded in the device, the recording medium having at least a first region, a second region and a third region, moreover, the data is recorded in the first region, after the second region, the first region follows, after the data recording region, the third region follows, the address information is located in at least one of the first address information and the second information addresses, the first address information represents the position of the second region, and the second address information represents the position of the third region; detecting an error in accordance with an error detection code by which the address information of at least one of the first address information and the second address information that has been read from the recording medium is encoded; and determining whether or not the loaded recording medium is suitable for the device in accordance with the result of the detection step. 116. The method according to p. 115, wherein the determination step is performed by determining that the loaded recording medium is not suitable for the device when the result of the detection step represents that an error was detected in the address information of at least one of the information the first address and second address information that has been read from the recording medium. 117. The method according to p, characterized in that it further comprises the step of displaying an alarm message that indicates to the user that the loaded recording medium is not suitable for this device. 118. The method according to p, characterized in that it further comprises the step of generating an audible alarm that indicates to the user that the loaded recording medium is not suitable for this device. 119. The method according to p. 115, characterized in that it further comprises a step where the result of the determination of the determination step represents that the loaded recording medium is not suitable for this device, it is prohibited to write data to the first region of the recording medium. 120. The method according to p, characterized in that it further comprises the step that the result of the determination of the determination step represents that the loaded recording medium is suitable for the device, data recording is allowed in the first region of the recording medium. 121. The method according to p. 115, characterized in that it further comprises a step where the result of the determination of the determination step represents that the loaded recording medium is not suitable for this device, it is forbidden to reproduce data recorded in the first region of the recording medium. 122. The method according to p. 115, characterized in that it further comprises a step where the result of the determination of the determination step represents that the loaded recording medium is not suitable for this device, it is allowed to reproduce data recorded in the first region of the recording medium. 123. The method according to p. 115, characterized in that it further comprises a step when the result of the determination of the determination step represents that the loaded recording medium is not suitable for the device, it is forbidden to write data to the first region of the recording medium and playback of the data recorded in the first region. 124. The method according to p. 115, characterized in that it further comprises a step where the result of the determination of the determination step represents that the loaded recording medium is not suitable for the device, it is allowed to record data in the first region of the recording medium and reproduce the data recorded in the first region .

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