KR20080038827A - Method for checking disc quality in optical disc device - Google Patents

Abstract

A method for checking disk quality in an optical disk device is provided to test the quality of the optical disk before recording data in order to prevent loss of important data. A test pattern is recorded in the inner area of an optical disk, and the test pattern is recorded in the outer area of the disk if the test pattern to be played corresponds to recorded one(S12,S13,S16). Jitter characteristics are measured and compared and a video of guiding the disk quality is displayed if a test pattern of the outer area of the disk to be played is identical to recorded one(S17,S18). The information of the disk quality, connected with an ID of a manufacturer of the optical disk, is stored in a non-volatile memory in the device.

Description

Measuring method for disc quality in optical disc device {Method for checking disc quality in optical disc device}

1 illustrates a configuration of an optical disk device to which the present invention is applied.

2 illustrates an embodiment in which a test pattern is recorded in an inner circumferential region and an outer circumferential region of an optical disc according to the present invention.

3 illustrates an embodiment in which a disc quality guide image is displayed according to the present invention.

4 and 5 are flowcharts illustrating operations of a method for measuring disk quality in an optical disk apparatus according to the present invention.

※ Explanation of code for main part of drawing

10: optical disc 11: optical pickup

12: spindle motor 13: sled motor

14 motor drive 15 optical drive

16: encoder 17: recording digital signal processing unit

18: RF processing unit 19: reproduction digital signal processing unit

20: servo controller 21: microcomputer

22: memory

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring disc quality in an optical disc apparatus. For example, in an optical disc apparatus such as a DVD-Recorder, a disc quality of an optical disc inserted into the apparatus is measured so that a user can measure the disc quality. The present invention relates to a method of measuring disk quality in an optical disk device for providing information.

In general, in an optical disk device that records or reproduces data on an optical disk such as a DVD, for example, a DVD recorder, a series of reading and storing navigation information recorded in a lead-in area of an optical disk inserted and seated in the apparatus and storing in a memory The navigation download operation is performed.

In response to a user's request, the navigation information is searched and referred to to perform a series of data recording operations for encoding and recording audio and video data into an MPEG data stream in a data area of an optical disc.

In addition, since a series of data reproducing operations of reading and decoding the MPEG data stream recorded in the data area of the optical disc as described above and reproducing the original audio and video data are performed, the user desires audio and video data. Can be recorded or played on an optical disc such as a DVD.

However, since optical discs such as DVDs do not have the same disc quality depending on the manufacturing company that manufactures the optical disc, for example, when important data is recorded on an optical disc having poor disc quality, data cannot be reproduced normally. As a result, a fatal problem occurs in which important data is lost.

Therefore, the present invention was created to solve the above problems, and for example, in an optical disc device such as a DVD-Recorder, it is possible to more accurately measure the disc quality of an optical disc inserted in the device. Then, the present invention provides a method for measuring a disc quality in an optical disc apparatus for displaying a guide image corresponding thereto so that a user can know the disc quality.

Disc quality measurement method in the optical disk apparatus according to the present invention for achieving the above object, the first step of recording the test pattern in the inner peripheral area of the optical disk and then reproduce, if the match, the test pattern in the outer peripheral area; And reproducing and matching a test pattern recorded in the outer circumferential region, measuring and comparing jitter characteristics, and providing and displaying an image guiding disc quality.

The method may further include storing and managing the information on the disc quality in a nonvolatile memory in the device in association with the manufacturer ID of the optical disc.

In the first step, the test pattern is recorded in the PCA area, which is the inner circumferential area of the optical disc, reproduced and matched, and the test pattern is recorded in the outer circumferential area. In step 2, when the test pattern recorded in the outer periphery region is reproduced and matched, the average value of the jitter value is measured and calculated, compared with the reference value, and an image for guiding disc quality is provided and displayed. Characterized in that the processing.

Hereinafter, a preferred embodiment of a method for measuring a disk quality in an optical disk device according to the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows a configuration of an optical disk apparatus to which the present invention is applied. For example, the DVD recorder to which the present invention is applied includes an optical disk 10, an optical pickup 11, a spindle motor 12, and a sled. Motor 13, motor drive 14, optical drive 15, encoder 16, recording digital signal processing unit 17, RF processing unit 18, reproduction digital signal processing unit 19, servo controller 20, The microcomputer 21, the memory 22, and the like are included.

On the other hand, in the microcomputer 21, when the disc quality test mode is set according to a user's request, the microcomputer 21 tests the inner and outer regions of the optical disc 10. Each pattern data is recorded.

For example, as shown in FIG. 2, predetermined test pattern data is recorded in a PCA (PCI) area corresponding to an inner peripheral area of the optical disc and an outer peripheral area of the data area.

When the test pattern data is recorded, reproduced, and matched, the jitter value of the test pattern data is detected, the average value of the jitter value is measured and calculated, and the disc quality is determined by comparing with the reference value.

In addition, a user interface (UI) image for guiding the determined disc quality is displayed. For example, as shown in FIG. 3, the user interface image includes whether a test pattern is checked, a jitter value, and a disc. The manufacturer ID and information about the test results are displayed.

On the other hand, in the microcomputer 21, the information on the disc quality determined as described above is linked with the manufacturer ID (MID) recorded in the lead-in area of the optical disc, and the non-volatile memory in the device, e.g. EEPROM) allows the user to know in advance the disc quality of the optical disc before performing the data recording operation. This will be described in detail below.

4 and 5 illustrate an operation flowchart of a method for measuring a disk quality in an optical disk apparatus according to the present invention. For example, in the microcomputer 21, a user interface menu (UI Menu) or a remote controller may be provided. The disk test mode is selected and set by inputting a specific function key (S10).

In the state where the disc test mode is set, when an optical disc for testing is inserted (S11), as described above with reference to FIG. 2, test pattern data is recorded in an inner circumferential region of the optical disc 10. For example, test pattern data having a size of about 2 ECC blocks is recorded in a PCA area of the optical disc.

On the other hand, the microcomputer 21 reads and reproduces the test pattern data recorded as described above, and compares with each other. For example, if it does not match, after ejecting the disk (S14), a message indicating a test failure is indicated. The output is displayed through the user interface message (S15).

On the other hand, as a result of the comparison, as described above with reference to FIG. 2, test pattern data having a size of about 100 ECC blocks is recorded in the outer peripheral area of the data area of the optical disc (S16). Since the outer circumferential region of the disk has a lower disk quality than the inner circumferential region, the test pattern data can be recorded relatively to ensure the reliability of the test results.

Then, the microcomputer 21 reads and reproduces the test pattern data recorded as described above, and compares them with each other. For example, if the microcomputer 21 does not match, the microcomputer 21 ejects the disk and then displays a message indicating a test failure. The message will display the output.

On the other hand, if the result of the comparison is matched, the detected jitter value of the test pattern data is detected, the average value is measured and calculated, and then compared with a preset reference value, the best jitter value and the most The comparison operation with the bad jitter value is performed (S18).

And, based on the comparison result, the range level for the jitter value of the test pattern data is calculated (S19), for example, according to the jitter value comparison result (S20), and the check result is reliable (Trustable). (S21), Common (S22), and Not Recommand (S23).

In addition, as a result of the determination, it is determined as not recommended (Not Recommand), the tray is automatically opened (S24), to perform the disk eject operation, so that the user knows this, with reference to Figure 3 As described above, the user interface image is guided and displayed (S25).

On the other hand, in the microcomputer 21, the information on the disc quality determined as described above is linked with the manufacturer ID (MID) recorded in the lead-in area of the optical disc, and the non-volatile memory in the device, e.g. EEPROM) to store and manage (S26), cumulative management of the disk quality information for each manufacturer ID (S26).

As mentioned above, preferred embodiments of the present invention described above are disclosed for the purpose of illustration, and those skilled in the art can improve other various embodiments within the spirit and technical scope of the present invention disclosed in the appended claims below. Changes, substitutions or additions will be possible.

Disc quality measurement method in the optical disk device according to the present invention made as described above, in various types of optical disk device, such as a DVD-Recorder, according to the user's request, Disc Quality Test (Disc Quality Test) ) Mode is set, the test pattern is recorded in the PCA area, which is the inner circumferential area of the optical disc, and reproduced if the test pattern is matched. If the test pattern is not matched, the test pattern is recorded in the outer circumferential area. If the test pattern recorded in the outer periphery area is reproduced and matched, the average value of the jitter value is measured and calculated, compared with the reference value, and an image for guiding disc quality is provided and displayed. Non-volatile memo in the device in association with the information on the disk quality, the manufacturer ID (MID) of the optical disk By the store management, prior to performing a data write operation, since the test the quality of the disc of the optical disc can be provided to the user guide, it would be very useful inventions are able to prevent such loss of important data in advance.

Claims (4)

Recording the test pattern in the inner circumferential region of the optical disc, reproducing and matching the test pattern, and recording the test pattern in the outer circumferential region; And And reproducing and matching the test pattern recorded in the outer area, measuring and comparing the jitter characteristic, and providing and displaying an image for guiding the disc quality. . The method of claim 1, And storing and managing the information on the disc quality in a nonvolatile memory in the device in association with the manufacturer ID of the optical disc. The method of claim 1, In the first step, the test pattern is recorded in the PCA area, which is the inner circumferential area of the optical disc, and reproduced after the test pattern is recorded. If the test pattern is matched, the test pattern is recorded in the outer circumferential area. How to measure disk quality on your device. The method of claim 1, In the second step, if the test pattern recorded in the outer periphery region is reproduced and matched, the average value of the jitter value is measured and calculated, compared with the reference value, and an image for guiding disc quality is provided and displayed. Disc quality measurement method for an optical disc device, characterized in that the processing as a failure.

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