TWI285889B - A method for reproducing and recording data of high density optical disc - Google Patents

Abstract

A high-density optical disc such as a high density-digital versatile disc (HD-DVD) or Blu-ray disc, and a method for reproducing or recording data of the high-density optical disc. The high-density optical disc includes a lead-in area, a data area and a lead-out area. The lead-in area has control information. A minimum mark or space length of the control information recorded in the data area. The control information of the lead-in area is copied to the lead-out area. On the basis of the data reproduction or recording method, an optical disc device can correctly read and confirm the control information from the high-density optical disc, minimize the interference between a mark and space in high-density recording data, reduce the effects of scratches or dust on the disc, and efficiently prevent an erroneous data reproduction or recording operation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-density optical disc, such as a high-density digital audio-visual (HD-DVD) or Blu-ray disc, the Blu-ray disc including a lead-in area, a data area, and a Export area. [Prior Art] Brother 1 fr is a description of a traditional digital video disc (7) yeah ^ structure. The DVD 1 has a thickness of 12 mm and a diameter of i2 〇 mm. The DVD 1 0 includes a center hole having a diameter of 15 mm and a clamp region of a diameter of 44 mm so that one of the turntables and the clamps mounted in a disc device can clamp the ^V〇 1 〇 〇

A data recording layer based on a pit pattern is formed on the DVD 1 0 corpse. The distance between the data recording layer and the surface of the light transmitting layer is about 6 mm' and the surface is arranged in the data recording layer and the optical disc device is first combined with the shifu to be an optical pick-up. ) between the objective lens (OL). The objective lens for the optical pickup of D has a numerical aperture (NA) value of 0.6. The high-density optical disc 20 (such as a high-density digital video disc or Blu-ray I g@ + ^) has a thickness of 1.2 mm and a diameter of 120 mm. The two-density disc 20 spoons red _ 匕 一直 一直 一直 一直 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 ~ Pass Y~ two-density disc 20. The data recording layer and the surface of the light-k layer are 0.1a' about 0.1 mm apart, and the surface is attached to the data recording layer and the optical reading head of the light Objective lens (0L). 5 1285889 The objective lens of the optical pickup for the high-density optical disc has a relatively large numerical aperture value of 0.8 5 as compared with the objective lens for the optical pickup of a general DVD. In order to make high-density recording data reproducible or recordable, the laser beam used in the high-density optical disk has a relatively short wavelength compared with that used for general DVDs, that is, the wavelength of the laser beam used for general DVD 10 is 6 5 Onm, and the laser beam used for this high-density optical disc has a wavelength of 405 nm, so that high-density recording data can be reproduced or recorded. Therefore, in the case where the objective lens for the optical pickup of the high-density optical disc approaches the recording layer of the high-density optical disc, the optical disc device uses a laser beam having a relatively short wavelength and increases the numerical aperture value of the objective lens. In order to make the beam spot of the laser beam smaller, the light intensity falling on the high-density recording layer is increased. Furthermore, it is also possible to reduce the light transmission layer that transmits a short-wavelength laser beam. Therefore, the chance of variation in the characteristics and deviation of the laser beam will be minimized. As shown in FIG. 3, the high-density optical disc includes a lead-in area 201, a data area 202, and a lead-out area 203. The control area includes the control information required to record or reproduce the high-density optical disc data, such as a message related to the size of the optical disc, a disc structure, a data recording density, and a data area configuration. Wait. Therefore, when the high-density optical disc 20 is loaded and loaded into the optical disc device, the control message recorded in the lead-in area 2 0 1 will be read and confirmed for the first time. The disc device will refer to the control message and then perform a continuous copy or record operation to reproduce the data recorded in the data area 202 or recorded in the data area 202. 1285889 In the lead-in area 201, the data area 202 and the lead-out area 203, in the high-density optical disc of 2 3.3 GB, the length of one channel and the length of the data bit are 80 nm and 120 nm, respectively; in a high-density optical disc of 25 GB. The length of the channel and the length of the data bit are 74.5 nm and 1 1 1.75 nm, respectively. In the 27 GB high-density optical disc, the length of the channel and the length of the data bit are 69 nm and 103.50 nm, respectively. The minimum mark/pitch length of the data recorded in the areas 201, 202, and 203 is the same as each other.

As described above, the optical disc device must first and correctly read and confirm the control message recorded in the lead-in area to reproduce or record the data of the high-density optical disc. At this time, interference between a mark and a pitch may appear in the high-density recorded material. Furthermore, scratches and dust on the surface of the disc can adversely affect the recording or reproduction of high-density recorded data. Because of this, there is a problem that the control message cannot be read properly and a data reproduction or recording operation cannot be performed properly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned deficiencies, and aims to provide a high-density optical disc, and a method of reproducing or recording the same, so that a disc device can correctly read and confirm recording in a lead-in area. Control message, wherein the lead-in area is included in the high-density optical disc, such as a high-density digital video disc (HD-DVD) or a Blu-ray disc. In accordance with an aspect of the present invention, the foregoing and other objects can be achieved by a high-density optical disc including at least an importing area 1 1285889, a data area, and a lead-out area, wherein the import is recorded in the import. The minimum mark or pitch length of the data in the zone is longer than the minimum mark or pitch length of the data recorded in the data zone. Preferably, in the high-density optical disc according to the present invention, the minimum mark or pitch length of the data recorded in the lead-in area may be longer than the minimum mark or pitch length of the data recorded in the data area, and The minimum mark or pitch length of the data recorded in the lead-in area may be the same or longer than the effective diameter of a laser beam spot.

Preferably, the high-density optical disc according to the present invention has a minimum mark or pitch length of data recorded in the lead-in area, which is longer than a minimum mark or pitch length of data recorded in the data area. The optical disc may further include a specific area in which the related information of the minimum mark or spacing of the data recorded in the lead-in area and the data area may be recorded.

In another aspect consistent with the present invention, a method is provided for reproducing or recording data of a high-density optical disc, the method comprising at least: (a) a program for reading data recorded in a lead-in area Detecting a rotation speed of a spindle motor, and the program includes at least detecting a rotation speed by a predetermined reference rotation speed; and (b) applying a reprocessing processing algorithm according to the result of the step (a) to reproduce the record in the lead-in area data of. In another aspect consistent with the present invention, there is provided a method for reproducing or recording data of a high density optical disc, the method comprising at least the following steps: (a) reading and recording in the lead-in area from the specific area and a message item related to the minimum mark or pitch length of the data in the data area, and (b) applying a reprocessing algorithm based on the result of step (a) to reproduce the record Import data from the zone.

In another aspect consistent with the present invention, a method is provided for recording a message on an optical recording medium comprising a lead-in area, a user data area, and a lead-out area, the method comprising at least the following steps: (a) based on control The control signal of the device records the data to be recorded in the user data area; (b) records the first control message in the lead-in area or the lead-out area to control the reproduction of the recorded data in the user data area; And (in addition to the lead-in area, the lead-out area, and the user data area, the second control message is recorded to control the reproduction of the recorded data in the lead-in area or the lead-out area, wherein the The second control message is used to indicate the minimum length of a mark or spacing recorded in the user data area, and the minimum length of a mark or spacing in the lead or lead area.

In another aspect consistent with the present invention, a method is provided for recording a message on an optical recording medium including a lead-in area, a user data area, and a lead-out area, the method comprising at least the following steps: (a) a control signal of the controller records the data to be recorded in the user data area; and (b) records a control message in a specific area other than the user data area to control the recorded data in the user data area Reproduction, wherein the control message includes a message to indicate, respectively, a minimum length of a mark or spacing recorded in the user data area and a minimum length of a mark or spacing in the import or export area. [Embodiment] 9 1285889 A preferred embodiment of a high-density optical disc and a method for reproducing or recording the same according to the present invention will be described in more detail below with additional drawings.

Figure 4 is a schematic diagram showing a state in which data having different minimum mark/pitch lengths are recorded in a lead-in area and a data area, and the areas are made of a high-density optical disc conforming to the present invention (e.g. A high-density optical disc 30), such as a high-density digital audio-visual disc (HD-DVD) or a Blu-ray disc including a lead-in area 301, a data area 302, and a lead-out area 03. The control area of the lead-in area includes a control message for recording or reproducing the high-density optical disc data, such as a message related to the size of the optical disc, a disc structure, a data recording density, and a data. Zone configuration and more. The minimum mark/pitch length of the control message recorded in the lead-in area 301 is longer than the minimum mark/pitch length of the general program and sound data recorded in the data area 302.

For example, as shown in FIG. 4, the minimum mark length (minimum mark_LIA) of the control message recorded in the lead-in area 310 is smaller than the minimum mark length of the general program and sound data recorded in the data area 302. The minimum mark _DA) is long. The length of a minimum mark recorded in the lead-in area 310 is the same as or longer than the effective diameter of a laser beam spot, depending on the effective value associated with the objective lens for the high-density optical disc and a laser beam. The wavelength λ. As shown in the following Equation 1, the effective diameter of the laser beam point is about 3 9 5 nm when the effective value (ΝΑ) = 0·85 and λ = 405 nm (0.405 // m) 〇 10 1285889 Equation 1 Laser Beam point = 0.83 χ & = 0.83 x = 0.395 / w = 395 nm In Equation 1 above, 0.8 3 is a coefficient, λ is the wavelength of a laser beam, and ΝΑ is an aperture value.

Therefore, the minimum mark length of the control message recorded in the lead-in area 301 is the same as or longer than the effective diameter of the laser beam spot of 395 nm. Further, the minimum mark length of the control message recorded in the lead-in area 310 is longer than the minimum mark length of the program and sound data recorded in the data area 302. Thus, the minimum pitch length (minimum spacing _LIA) of the control data recorded in the lead-in area 3 〇 1 is the same as or longer than the effective diameter of the laser beam spot of 3 9 5 nm. The minimum pitch length of the control message recorded in the lead-in area 310 is longer than the minimum mark length (minimum pitch_DA) of the program and voice data recorded in the data area 302.

Referring to the table shown in Fig. 3, the high-density optical disc can be in the form of three recording densities. The three recording densities are in the form of a single layer comprising 23.5 Gbytes, 25.025 Gbytes, and 27.020 Gbytes. The channel bit length corresponds to each recording density, that is, at 2 5.0 2 5 Gbytes, the "1T" length of the temple is 74.50 nm; jfc, at 27.020 Gbytes, the "IT" length is 69.00 nm. For example, when the recording density is 23.305 Gbytes, the effective diameter of the laser beam obtained by the above Equation 1 is approximately 9 5 5 n m in accordance with the length of 5 Τ (3 9 5/8 0.0 0 = 4.9 3 7 5 μ μ μ). The length of the mark or spacing of the data to be recorded in the data area is about "2 Τ" to "8 Τ", so the minimum mark or spacing length of the data to be recorded in the lead-in area is 11 1285889. When the effective diameter of the beam spot is the same or longer, the mark or pitch of "5 Τ" or longer can be recorded as the data of the lead-in area. In this way, the method for adjusting the data recorded in the lead-in area can be changed to record the mark or spacing of one of "5" to "8" or "5" to "11". In addition, when the method for adjusting the data recorded in the lead-in area is the same as the method for adjusting the data recorded in the data area, the length of other marks or spaces may be proportional to the increased minimum mark or pitch length. increase.

First, since the length of other marks or spaces can be proportionally increased by the increased minimum mark or pitch length, the method for adjusting the data to be recorded in the lead-in area is used for adjustment to be recorded in the data. When the method of the data in the area is the same, the length of "2 Τ" in the data area will be equivalent to the length of "5 Τ" in the lead-in area. The length of "3 Τ" in the data area will be equivalent to 7.5 in the lead-in area. The length of "Τ" and the length of "8Τ" in the data area will be equivalent to the length of "20" in the lead-in area. The lengths of "5Τ" to "20Τ" are applied instead of the lengths of "2Τ" to "8Τ" as described above, that is, the space of the embossed area may occupy most of the lead-in area. However, since the embossed area generally has sufficient space to record control messages associated with the disc, such effects do not have to be overly anxious. An advantage is that the load on the optical disc system can be reduced when the same data adjustment method is used in the lead-in area and the data area. On the other hand, when the method for adjusting the data for the lead-in area (data having the smallest mark or the pitch length of "5 Τ" or longer) is different from the method for adjusting the data of the data area, for example, when the lead-in area The information in this section only has 12 1285889 which has some advantages when it is adjusted by the four types of "5Τ", "6Τ", "7Τ" and "8T", that is, the lead-in area is occupied with less space. . However, this will have some negative effects. For example, a new adjustment method must be designed, and the optical disc system needs to add a new remanufacturing device to perform the demodulation method equivalent to the new adjustment method.

As described above, when the minimum mark or pitch length of the data recorded in the lead-in area is longer than the minimum mark or pitch length of the data recorded in the data area, or according to different data adjustment methods (with the lead-in area) When the disc data related to the data area is reproduced or recorded, the information related to the lead-in area of the disc needs to be confirmed so that the lead-in area contains the necessary information to be reproduced or recorded. Read. That is, when the data of the lead-in area or the minimum mark or the length of the track type of the data adjustment type is confirmed, the data recorded in the lead-in area can be appropriately read.

The message associated with the lead-in area needs to be recorded in a specific area, formed at the inner side of the lead-in area, and is read for the first time when the optical disc is fed into the optical disc device. As shown in Fig. 6, the inside of the lead-in area forms a break-in block (BCA). Preferably, the information related to the lead-in area is recorded for the first time when the BCA is recorded, and the information recorded in the lead-in area can be appropriately weighted by using the message (referring to the lead-in area) And recorded in this particular area as described above. In addition, Figures 7A and 7B show a data structure and data content related to BCA coding in accordance with the present invention. For example, a message indicating the minimum mark or pitch length of the lead-in area can be recorded in the "2" data bit. A message indicating the minimum mark or long spacing of the material can be recorded 13 1285889

In the "3rd" data bit. The message used to indicate the type of data adjustment in the lead-in area can be recorded in the "4th" data bit. In this case, "blbO" and "rb7b6b5b4b3b2", which are included in the "1st" byte Ioj in the "2" data unit, can be "01" and "000010" respectively. The remaining 15 bytes included in the "2" data unit can be used to indicate the minimum mark or pitch length of the lead-in area. Similarly, "blbO" and "rb7b6b5b4b3b2", which are included in the "1st" byte 10, 2 of the "3" data unit, can be divided into another, and J is "10" and "000010". The remaining 15 bytes included in the "3" data unit can be used to indicate the minimum mark or pitch length of the data area. Similarly, "blbO" and rb7b6b5b4b3b2", which are included in the "1st" byte of the "4th" data unit, can be "11" and "000010" respectively. The remaining 15 bytes in the data unit can be used to indicate the type of data adjustment. Figure 8 is a diagram showing a system for recording and reproducing the data of the high density optical disc in accordance with the present invention.

The system includes a high-density optical disc 50; an optical read/write head 60 for reading and writing data from the optical disc 50 or recorded on the optical disc 50; a radio frequency (RF) processor for forming a The data waveform read by the optical head 60; a digital signal processor (DSP) 70 for converting the data reproduced by the RF processor, which is re-formatted or adjusted in a digital manner Data, or demodulate the data each time the data is recorded; a buffer memory 80 for temporarily storing the data; and a controller 90 for controlling the various components of the system. The DSP 70 according to a preset demodulation and re-processing signal processing method may include a processing unit 71 for the data area, and the method is suitable for re-recording in the data area of the high-density optical disc. General information; and a processor 72 for the lead-in area, according to another demodulation and re-processing signal processing method, and the method has a minimum mark or pitch length in the lead-in area or the lead-in area The information has been specially adapted to reproduce the data.

When the optical disc 50 is loaded into the system, and the data read by the optical pickup 50 is input to the DSP 70 via the RF processor, the controller 90 preferably performs a control operation. The demodulation and re-processing signal processing method suitable for reproducing the data (recorded in the lead-in area) can be selected by using a message (related to the lead-in area) and recorded at the innermost side of the optical disc 50. .

The disc device for reproducing or recording high-density optical disc data can be read more correctly when the minimum mark/pitch length of the data recorded in the lead-in area is the same as or longer than the effective diameter of the laser beam spot. And confirm the control message recorded in the lead-in area. Therefore, the interference between a mark and a pitch in the high-density recording data is minimized, and the influence of scratches or dust is also reduced, and thus it is more effective to avoid an erroneous data reproduction or recording operation. The control information of the lead-in area can be copied to the lead-out area 403 (as shown in Fig. 5) in response to scratches or dust having a certain size or a large amount of presence in the lead-in area of the aforementioned high-density optical disc. Next, a method for reproducing or recording the high-density optical disc data in the case where the minimum mark or the pitch length of the material in the lead-in area is longer than the minimum mark or the pitch length of the data in the lead-in area will be described. 15 1285889 When the disc is loaded, the general disc reproducing or recording device performs reading of the control data recorded in the lead-in area of the disc, and stores the read information in the memory. The lead-in zone, the data zone, an inner zone or an outer zone maintains a fixed linear rate when the optical disk reproduction or recording device rotates a spindle motor to maintain a fixed user data bit rate.

Therefore, when the length of the mark or the pitch of the data recorded in the lead-in area is the same as the mark or the pitch length of the data recorded in the data area, the linear rate associated with the operation of a disk and used to read the data of the lead-in area is equal to The optical disk is associated with a linear rate for reading data in the data area. Therefore, when it is learned that the lead-in location is within a predetermined radius of the optical disc, the rotational speed of the spindle motor can be predicted.

However, if the length of the mark or the pitch of the data recorded in the lead-in area is longer than the mark or the length of the mark recorded in the data area, when the fixed user data bit rate is maintained (with the lead-in area) When the linear rate is faster than the linear rate for maintaining the fixed user data bit rate (related to the data area), the spindle motor speed for reading the lead-in data becomes later than the predetermined speed fast. Meanwhile, if the data density is high, that is, when the mark or the pitch length is short or the distance between the tracks is narrow, the resolution of the laser beam point is lowered, and the characteristics of the light transmission function are also lowered, so that the It is difficult to read the signal by the optical pickup for proper demodulation and reproduction. As such, the adjustment method may be changed or a channel technique such as a partial response maximum likelihood (PRML) or a solution to the Viterbi demodulation method (used in a communication system) may be used to make the reading The take signal can be properly demodulated or reproduced. The demodulation method for reproducing the read signal is applied only to the data adjusted by the corresponding adjustment method. The aforementioned demodulation method cannot be applied when the data is adjusted by different adjustment methods, or when the characteristics of the optical transmission function are changed. Therefore, when the mark or pitch length of the lead-in area is different from the mark or pitch length of the data area, the characteristics of the light transfer function associated with the lead-in area and the data area are also different. Because of this, when the read signal is demodulated and reproduced, different signal processing methods must be applied to different areas.

Figure 9 is a flow chart showing the first embodiment of the present invention, which illustrates a method for recording and reproducing the material of the high-density optical disc. When the high-density optical disc is fed into and loaded into a disc reproducing or recording device (step S1 0), the device detects the rotational speed of a spindle motor and simultaneously reads and records in the lead-in area ( The disc is rotated based on the linear rate of the user data bit rate (step S11).

The apparatus compares the detected rotational speeds with a predetermined reference rotational speed (step S12). Here, the predetermined reference rotational speed is adapted to the required speed of the data in the lead-in area, and the minimum mark or pitch length of the data is the same as the minimum mark or pitch length of the data in the data area, and is intended to be at the user data bit rate. Read. At this time, if the detected rotation speed is higher than the reference rotation speed, it is determined that the minimum mark or the pitch length of the data recorded in the lead-in area is longer than the minimum mark or the pitch length of the data recorded in the data area. The apparatus reads the lead-in area using a new reprocessing method to reproduce the relatively longest minimum mark or spacing of the lead-in area (step S13). Next, the device determines whether the data recorded in the lead-in area has been completely read (step S14). If the recorded data in the lead-in area has been completely read, the re-processing method is converted into a predetermined re-processing method to reproduce the data recorded in the data area, and then performs a copy or record operation. (Step S 1 5 ). Fig. 10 is a flow chart showing the second embodiment of the present invention, which illustrates a method for recording and reproducing the material of the high-density optical disc.

When a high-density optical disc having a specific area in which a plurality of message items related to the minimum mark or spacing of a lead-in area and a data area are recorded is fed and loaded into a disc reproducing or recording apparatus (Step S20), the device reads a message item related to the smallest mark or spacing of the areas from the particular area of the disc (step S2i), and the device compares the items of the message Numerical value (step S22). If the minimum mark or pitch length in the lead-in area is longer than the minimum mark or pitch length in the data area after comparison, the device will read the lead-in area by using a new re-processing method to reproduce the A relatively long minimum mark or spacing of the data in the lead-in area (step S2 3). The device determines whether the data recorded in the lead-in area has been completely read (step S2 4), and if the data recorded in the lead-in area has been completely read, the device converts the re-processing method to A predetermined reproduction processing method for reproducing the material recorded in the material area and performing a copy or record operation (step S25). The foregoing two methods consistent with the two embodiments of the present invention and capable of reproducing and recording the high density optical disc data may selectively use an independent re- or demodulation method to reproduce the data recorded in the lead-in area, and A reproduction or demodulation method is predetermined to reproduce the data recorded in the data area. 18 1285889

When the high-density optical disc 40 having the lead-in area and the lead-out area (having the same control message) is fed into and loaded into the disc reproducing or recording device, the device determines whether the control message is read first. The program reads it appropriately and confirms the control message recorded in the lead-in area 401. At this time, if the control message is not properly confirmed, the device moves the optical read/write head to the lead-out area 403 and then reads the control information copied to the lead-out area 403. In this procedure, the device determines whether the control message copied to the lead-out area 403 has been properly read. If the control message copied to the lead-out area 403 is not properly read, the device determines the feed. The disc has an error in the reproduction or recording operation, and then the device terminates the operation. On the other hand, if the control message is properly read in the lead-in or lead-out area, the device will properly perform a series of remakes for reading/reproduction or recording the data of the data area 402 or Record the operation.

The present invention is based on the reproduction of optical disc data. The present invention is applicable to a method and apparatus for recording a specific area, recording a message required to reproduce the data recorded in the lead-in area or optically adjusting the lead-in area to have a The minimum length mark or spacing (different from the minimum mark or pitch length of the data area). More specifically, the present invention can be easily applied to a host device, that is, the present invention is a method for manufacturing a disc having a specific area, and the identification information associated with a lead-in area in the specific area is Recording so that the data of the lead-in area can be properly read when the minimum mark or pitch length of the lead-in area data is longer than the minimum mark or pitch length of the data area. It will be appreciated from the foregoing description that the present invention provides a high density light 19 1285889 disc and a method for reproducing or recording its data, which allows an optical disc device to correctly read and confirm the high density. The control information of the disc minimizes the interference between a mark and the spacing in the high-density recording area, reduces the influence of scratches and dust on the optical disc, and effectively avoids erroneous data reproduction or recording operations.

While the present invention has been described in connection with the preferred embodiments of the present invention, it will be understood by those skilled in the art that The scope and spirit of the proposed. BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and other advantages of the present invention will become more apparent from

1 is a structural diagram of a conventional digital audio-visual disc (DVD); and FIG. 2 is a structural diagram illustrating a conventional high-density optical disc (such as a high-density digital video disc (HD-DVD) or Blu-ray disc); 3 is a schematic diagram showing a lead-in area, a data area, and a lead-out area provided by a conventional high-density optical disc. FIG. 4 is a schematic diagram showing a state in which data having different minimum mark/pitch lengths is recorded in an import. In the area and the data area, the areas are provided by a high-density optical disc according to the present invention; FIG. 5 is a schematic view showing a state according to the present invention, which is recorded in the lead-in area (from the high density) The control message 20 1285889 included in the disc is copied to the lead-out area; Figure 6 illustrates the break-in block (BCA) of a conventional high-density optical disc; Figures 7(a) and 7(b) illustrate A data structure and data content of a BC A code of a high-density optical disk of the present invention; and FIG. 8 is a view showing a system for recording and reproducing data of the high-density optical disk according to the present invention;

Figure 9 is a flow chart showing a first embodiment of the present invention, which illustrates a method for recording and reproducing data of the high-density optical disk; Figure 10 is a second embodiment of the present invention. A flow chart illustrating a method for recording and reproducing data of the high-density optical disc. [Simplified description of component symbol] 10 digital audio and video disc 20 high-density optical disc 50 high-density optical disc

60 Optical head 80 Buffer memory 70 Digital signal processor 71 Data area processor 72 Lead-in processor 90 Controller 21

Claims (1)

1285889 Picking up, applying for a patent range: 1. A method for recording information on an optical recording medium, comprising at least the following steps: (a) recording, in the user data area, a record to be recorded according to a control signal of the controller Information; (b) recording, in a specific area other than the user data area, first control information to control copying of the data recorded in the user data area, wherein the control information includes indicating the recording in the user data area Information on the minimum length of a mark or spacing. 2. The method of claim 1, further comprising the steps of: (c) recording a second control message in the particular area to control replication of the material recorded in the lead-in area and/or lead-out area; . 3. The method of claim 1, wherein the specific region is located in the intrusion blocking zone (BCA) which is the inner side of the introduction zone. 4. The method of claim 1, wherein the control information further includes information indicating a minimum length of a mark or spacing in the lead-in area or the lead-out area. 5. The method of claim 1, wherein the control element 22 1285889 further includes information indicating a modulation method used in the lead-in area or the lead-out area. 6. A method for recording information on a recording medium, comprising at least the following steps: (a) processing the data to be recorded in the user data area to form a mark or spacing on the optical recording medium, and the length of one of the user data areas is smaller than the lead-in area and/or The length of a mark or space in the lead-out area is short; and (b) the processed data in the user data area is recorded. 7. The method of claim 6, further comprising the step of: (c) selecting a processing method to process the data to be recorded in step (a) based on the location recorded in the data. 8. The method of claim 7, wherein the step (c) selects a first processing section comprising a Partial Response and Maximum Likelihood (PRML) 〇 9. The method of claim 7, wherein the step (c) selects a first processing section to cause the data to be copied by a partial response maximum likelihood method. The method of claim 6, wherein the step (a) can process the data to replicate the data using a Viterbi decoder when the record is copied. 1 1. The method of claim 6, wherein the step (a) is capable of processing the data to replicate the data using a portion of the response maximum likelihood method when the record is copied. The method of claim 6, wherein the step (a) utilizes a modulation method to process the data, and the modulation method is different from processing the data of the lead-in area and/or the lead-out area. Modulation method. 1 3 . A method for reading material from a recording medium, which comprises at least the following steps: (a) receiving an instruction to read data recorded in the lead-in area or the user data area, wherein the mark or pitch length of the data recorded in the lead-in area is different from the mark of the data recorded in the user data area Or spacing length; and (b) selecting a processing section in accordance with the instruction to read one of the data recorded in the lead-in area and the user data area. 14. The method of claim 13, wherein the step (b) is at 24 1285889. the instruction is to read the data recorded in the user data area, and the first one having the one-dimensional ratio decoder can be selected. Processing section. 15. The method of claim 13, wherein the step (b) selects a second processing section that does not require at least one Viterbi decoder when the instruction reads the data recorded in the lead-in area. . 16. The method of claim 13, wherein the step (b), when the command reads the data recorded in the user data area, selects a portion for responding to the maximum possible method. A processing method. 17. The method of claim 13, wherein the step (b), when the command reads the data recorded in the lead-in area, may select at least one of the maximum possible methods for responding to the partial response. The second processing method. 1 8. A method for reading data from a recording medium, comprising at least the following steps: (a) determining, based on control information recorded in a specific area, recording in a control data area and a user data area Whether a mark or a space in the difference is different from each other; and (b) determining a data processing method according to the step (a). 19. The method of claim 18, wherein the step (b) in step (a) of 25 1285889 determines that one of the marks or spaces recorded in the control data area and the user data area is different from each other It is decided to process with the first data processing method with Viterbi decoding. 2 0. A method for reading data from a recording medium, which comprises at least the following steps: (a) Identifying which region of the data to be read has the following message: a mark or pitch length recorded in a user data area is different from a mark or pitch length recorded in the lead-in area and/or the lead-out area And (b) if the area is identified as a user data area based on the result of step (a), the Viterbi decoder is used to process the data recorded in the user data area. 21. The method of claim 20, further comprising the steps of: (c) according to the result of step (a), if the region is identified as a lead-in area and/or a lead-out area, another The Viterbi decoder method is required to process the data recorded in the lead-in area and/or the lead-out area. 22. The method of claim 20, further comprising the steps of: (d) controlling 26 1285889 data reading according to a light conversion function in the user data area, in the user data area The optical transmission function is different from the optical transmission function of the lead-in area and/or the lead-out area. 27 苐气>1丨4 call number special ^ case election year / month 蓚 正 9th 1285889 柒, designated representative map: (1), the designated representative figure of this case is: Figure 4. (B), the representative symbol of the representative figure is a simple description: 3 0 high-density optical disc lead-in area (301) export area (303) data area (302) Minimum spacing length _D A Minimum marking length—DA Minimum spacing length _LIA-Laser beam point Minimum marking length _LIA-Laser beam point 捌 If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: 4