JP2006179136A - Information recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a failure of predictable recording by detecting scratches and stains on a disk before recording and reproducing information and notifying a user of a result of the detection, and on the other hand, to prioritize recording and reproduction by making the user recognize the stains on the disk to avoid repeating the notification. <P>SOLUTION: To solve the above problem, the information recording and reproducing device comprises a detection means for detecting scratches and stains on the recording surface of a recording medium, a notification means for notifying the information of the scratches and stains on the recording medium, and a judgment means for determining an output to the notification means based on a result of the stain detection means, and when outputting the detection result of the stain detection means to the notification means, the information recording and reproducing device is characterized by inhibiting the 2nd notification for a period before ejecting the recording medium at the time of having performed the 1st notification and thereafter. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a notification method when a disk contamination is detected in an information recording / reproducing apparatus having a function of detecting a scratch or contamination on a disk, and in particular, avoids repeated notification in a situation where the disk contamination is known to the user. The present invention relates to a technique suitable for giving priority to recording and reproduction.

  2. Description of the Related Art In recent years, various applications of disk recording / playback apparatuses using magnetic or light or their combined technologies, such as home disk recorders and disk cameras, have appeared.

  For products using these discs as recording media, quality control of the disc is an extremely important issue. If the recording surface of the disc is contaminated with scratches or fingerprints, high-quality recording and playback cannot be performed. It causes troubles such as block noise or recording stop. Especially for products sold for home use, consideration for dirty discs is essential.

Therefore, as a technology to avoid troubles due to scratches and dirt on the recording surface of the disc,
(1) a technique for detecting the state of scratches or dirt on the recording surface of the recording medium at a stage before the recording or reproducing operation (see Patent Document 1), or (2) scratches or dirt on the recording surface of the recording medium. A technique for preventing a recording failure by notifying the user of the detected result or making recording impossible (see Patent Document 2) has been proposed.

  As an example of (1), in the compact disc reproducing apparatus described in Patent Document 1 (Japanese Patent Laid-Open No. 6-203466), before the disc is reproduced, from the inner circumference to the outer circumference or from the outer circumference to the inner circumference. There has been proposed a technique for performing a track jump of a specified number of tracks and detecting that there is dirt on the disc based on the difference between the number of tracks actually jumped and the specified number of tracks.

  As an example of (2), in the optical disk recording apparatus described in Patent Document 2 (Japanese Patent Laid-Open No. 10-79123), when fingerprints, dust, etc. adhering to the optical disk surface are detected, the optical disk is defective. If the display or display indicating that recording is not possible, or prompting for disc cleaning, or the device is set to a non-recordable state, or if the optical disc is forcibly ejected from the device and no failure is detected, it is defective Proposed a technique to avoid recording failure by providing a disc pass / fail judgment control means for displaying that there was no recording or recording possible, or setting the device in a recordable state Has been.

JP-A-6-203466 Japanese Patent Laid-Open No. 10-79123

  According to the two prior arts described above, it is possible to prevent a recording / reproduction failure by detecting the contamination of the disk prior to recording / reproducing and notifying the user of that fact.

  However, there is a problem described below, and no special consideration has been given to avoiding recording failure and securing recording / reproduction opportunities. In other words, information cannot be recorded / reproduced during a period of work such as notification of disk contamination, disk replacement, or cleaning. This is a particularly important problem in products that are valuable for real-time recording, such as home disk recorders and disk cameras.

  The object of the present invention is to detect disc scratches and dirt prior to recording / reproducing information and notify the user of the detected results to prevent predictable recording failures while using disc dirt. Information recording / reproduction that allows both recording avoidance due to disc contamination and securing of recording / reproduction opportunities by providing means to allow recording / reproduction performed by the user and to avoid repeated notifications. To provide an apparatus.

  In order to solve the above problems, the following information recording / reproducing apparatus is provided. A dirt detecting means for detecting scratches and dirt on the recording surface of the recording medium, a notifying means for notifying information on scratches and dirt on the recording medium, and an output to the notifying means based on the result of the dirt detecting means A determination means for determining the detection result, and when the detection result of the dirt detection means is output to the notification means, a period from when the first notification is made until the recording medium is discharged is The second notification is suppressed.

  When the disk is dirty, the user recognizes that the disk is dirty by the first notification, ejects the disk, and performs operations such as replacement or cleaning of the disk. As a result, recording failure due to disc contamination can be avoided.

  On the other hand, recording / reproduction is allowed in a situation where disk replacement or cleaning is impossible due to the absence of a spare disk or the desire to immediately perform recording / reproduction. Recording / reproduction in this case is a user's choice after recognizing that the disc is dirty, so at least the period until the disc is ejected is used for the recording / reproduction operation after the first notification. Notification of disc contamination to the user can be omitted. That is, by suppressing the second notification, it is possible to immediately shift to recording / reproduction without interposing a disk contamination notification.

  In the information recording / reproducing apparatus according to claim 2 of the present invention, when outputting the detection result of the dirt detection means to the notification means, from the first notification to the discharge of the recording medium. During this period, the second notification is suppressed and the stain detection process by the stain detection means is suppressed. Thereby, the preparation period until the recording / reproducing instruction is accepted can be shortened.

  The information recording / reproducing apparatus according to claim 3 of the present invention, which is a development of the above-described apparatus, further includes storage means for storing the result detected by the dirt detecting means, and the detection result of the dirt detecting means is displayed. When outputting to the notification means, when the first notification becomes infeasible or invalid, the first notification is suspended, the dirt result is saved in the storage means, and the notification can be executed or When it becomes effective, the first notification is retried based on the dirt result saved in the storage means. As a result, the user can be notified that the disk is dirty in all the operation modes of the apparatus.

  Prior to recording / playback of information, disc scratches and dirt are detected, and the detection results are notified to the user to prevent predictable recording failures. It is possible to provide an information recording / reproducing apparatus that allows recording / reproduction to be performed and further provides a means for avoiding repetitive notifications, so that recording failure can be avoided and recording / reproduction opportunities can be ensured.

  According to the present invention, it is possible to provide an information recording / reproducing apparatus having improved usability in connection with dirt detection.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration example of a camera-integrated optical disc recording / reproducing apparatus according to an embodiment of the present invention.

  First, the configuration of the power supply will be described. The power is supplied from an external power source (not shown) via the power input terminal 18 and distributed to the camera unit 100 and the drive unit 200 via the power circuit 17.

  Next, the configuration of the image capturing unit and the audio / electrical conversion unit will be described. A subject image is focused on an individual imaging sensor 8 typified by a CCD (Charge Coupled Device) or the like through a lens unit 7 driven by a lens position control circuit 13 in accordance with a command from the system controller 16 to be electrically After being converted into a signal, the video signal processing circuit 9 converts it into a video signal. The sound is collected by the sound collecting microphone 1 and converted into a sound signal by the sound signal processing circuit 2. These video signals and audio signals are encoded by the compression / expansion circuit 3 and become compressed information recorded on the disk. On the other hand, the video signal is output via an image display / output circuit 10 to an LCD (Liquid Crystal Display) 12 for confirming the image on the apparatus main body, and to an image output terminal 11 to an external device. Is output to the speaker 5 for confirming the sound in the apparatus main body and the sound output terminal 6 to the external device via the audio output circuit 4.

  Next, a configuration until the video / audio information generated by the camera unit 100 is transferred to the drive unit 200 will be described. The video / audio information encoded by the compression / decompression circuit 3 is temporarily stored in a camera buffer 14 represented by a D-RAM (Dynamic Random Access Memory) or the like on the camera unit 100, and the information storage amount of the camera buffer 14 is stored. Is read when it reaches a predetermined amount. Information storage commands and read control commands to the camera buffer 14 are controlled by the system controller 16. The read video / audio information is transmitted to the signal processing circuit 25 of the drive unit 200 through the camera / drive interface circuit 19.

  Next, the configuration of the recording / reproducing means of the drive unit 200 will be described. As described above, information transmitted from the camera unit main body is sent to the signal processing circuit 25 via the camera / drive interface 19 for exchanging information between the camera unit 100 and the drive unit 200, and the command information thereof is the drive controller 28. The recorded information is stored in a drive buffer 29 typified by a D-RAM or the like of the drive unit 200. Thereafter, the drive controller 28 having received the recording instruction instructs the servo control circuit 23 to drive the rotation of the disk by the spindle motor 21, the light emission of a laser diode (not shown) disposed in the pickup 22, and the lens actuator (not shown). As a result, the laser beam is focused on and tracked on the disk surface, the pickup 22 is moved to the recording instruction position by the slider motor 24, and mechanical control is performed so that the recording operation to the disk 20 is possible. When the drive unit 200 reaches a recordable state, the drive controller 28 instructs the signal processing circuit 25 to record the record information previously stored in the drive buffer 29 in accordance with the record format corresponding to the type of the disk 20. The data is sequentially sent to the recording circuit 27 while being converted into a format. The recording circuit 27 performs recording by varying the light emission power of the laser diode in accordance with the sent recording information.

  At the time of reproduction, the path is almost opposite to that at the time of recording. First, the drive controller 28 that has received a reproduction command via the camera / drive interface circuit 19 instructs the servo control circuit 23 to record the information to be reproduced in the same manner as in the recording operation. To perform the mechanical control operation. As a result, the photoelectric conversion element (not shown) arranged on the pickup 22 detects the intensity of the reflected light according to the recording information formed according to the change in the previous laser power. This information is amplified and equivalent in waveform by the reproduction circuit 26 and sent to the signal processing circuit 25. The signal processing circuit 25 cancels the information format of the recording format corresponding to the type of the disk 20 to restore the reproduction information, and stores it in the drive buffer 29. Further, the drive controller 28 instructs the signal processing circuit 25 to sequentially send the reproduction information stored in the drive buffer 29 to the camera buffer 14 of the camera unit 100 via the camera / drive interface circuit 19. The reproduction information transmitted to the camera buffer 14 of the camera unit 100 is expanded as the video / audio information encoded by the compression / expansion circuit 3 and restored as a video signal and an audio signal, and the video signal is displayed as a video display / output circuit. 10 is output to the LCD 12 for confirming the video on the apparatus main body, and the audio signal is output to the speaker 5 for confirming the sound on the apparatus main body via the audio output circuit 4.

  Next, the configuration of the dirt detection means will be described. The drive surface 200 inspects the recording surface of the disk 20 for scratches and dirt such as fingerprints before the recording / reproducing operation. The results of the inspection are collected in the drive controller 28, and the drive controller 28 determines the notification contents and the necessity of notification in consideration of the degree of contamination and the current operation mode of the apparatus.

The notification contents determined by the drive controller 28 and the notification necessity information are transmitted to the system controller 16 of the camera unit 100 via the signal processing circuit 25 and the camera / drive interface circuit 19. If notification is necessary, the system controller 16 causes the LCD 12 to display a “dirt warning” prior to the recording / reproducing operation. As a result, the user recognizes that the disk 20 is dirty, instructs the system operation unit 15 to eject the disk, and operates an eject mechanism (not shown) to eject the disk 20 being mounted. Such as replacement or cleaning.
However, there is a problem that information cannot be recorded / reproduced during a period required for operations such as notification of contamination of the disc, replacement of the disc, or cleaning, and the information recording / reproducing apparatus of the present embodiment solves this problem. After the “dirt warning” is displayed on the LCD 12, if the user can perform disk replacement or cleaning, the user can remove the disk 20 being mounted and replace or clean the disk. When the user wants to immediately perform recording / playback by avoiding recording / playback failure due to disc contamination, the system operation unit 15 receives a recording / playback instruction and follows the path of the previous recording / playback means. Perform playback. Furthermore, if the “dirt warning” is displayed even once on the LCD 12, the dirt detection processing of the drive unit 200 and the “dirt warning” display on the LCD 12 are suppressed during the period until the mounted disc 20 is ejected. And an effect of shortening the recording / reproduction preparation period.

  Next, the operation sequence in the present invention will be described with reference to the processing flow of FIG. Note that the disc dirt detection process and the notification process may be performed at any timing before recording / reproduction, and the processing flow shown in FIGS. 2 and 3 is an example. Moreover, what attached | subjected the same number as FIG. 1 shall perform the same function.

  The operation sequence in the present invention will be described with reference to FIG. First, the operation from the loading of the disk to the detection of the dirt on the disk will be described. When the disk is loaded 51 and the power of the apparatus is turned ON 52, the optical disk drive moves from the innermost circumference to the outer circumference to determine the start position for recording and reproduction, the innermost movement of the head, spindle rotation, Loading 53 (hereinafter simply referred to as loading), which is a preparation process for the optical disc drive to perform recording and reproduction, such as focusing of laser light, tracking, and servo adjustment, is started. The disk contamination detection 55 is performed until the loading completion 57. The determination as to whether or not to execute the disk contamination detection 55 indicates the actual performance of the disk contamination detection 55 stored in the nonvolatile memory 30 inside the apparatus. The determination is based on information (hereinafter referred to as a dirt detection result). If the loaded disc is the first loading (first time), the contamination detection result of the non-volatile memory 30 is “no record”. The result of the disk contamination detection is stored in the nonvolatile memory 30 inside the apparatus by the contamination information storage 56 together with the result of the contamination detection. In the case of the second and subsequent loadings, since the dirt information storage 56 at the previous loading indicates “There is a track record”, in the determination process 54, the disk dirt detection 55 and the disk dirt information storage 56 are performed. Omitted. Thereby, the effect of shortening the loading period is obtained. Here, the reason why the non-volatile memory 30 is used for the dirt information storage 56 is to keep the dirt information even after the power is turned off 66. When loading is completed 57 through the above procedure, the optical disc drive is ready for recording and reproduction.

  Next, the operation after the disc contamination detection will be described. If the result of the disc contamination detection 55 is “no contamination”, the display 60 indicating that recording / reproduction is permitted is displayed on the LCD 12 according to the determination processing 58, and if “contamination exists”, the nonvolatile memory inside the apparatus is displayed. The recording / reproduction permission display 60 is displayed on the LCD 12 by the determination processing 59 based on the information (hereinafter referred to as a dirt warning result) indicating the result of the dirt warning stored in 30 or the dirt warning display 61. Determine whether to perform.

  At this time, if it is after the completion of the first loading, the disk contamination warning has not been given, so “dirty warning record is not found”, and the contamination warning display 61 is displayed on the LCD 12 according to the determination 59. The content of the contamination warning display 61 may be simply a report that the disc is dirty, a content that prompts the user to replace or clean the disc, or allows the user of the apparatus to record or reproduce the disc. It may be a content requesting selection of whether or not to perform. It is sufficient that at least the user can recognize that the disc worn by the user is dirty. Further, the result of the dirt warning display 61 is stored in the nonvolatile memory 30 inside the apparatus as the dirt warning result. The reason why the nonvolatile memory 30 is used for the storage 62 of the contamination warning record is to maintain the contamination warning record even after the power is turned off 66. After the stain warning display 61, when the user instructs recording or reproduction from the system operation unit 15, the process immediately shifts to recording / reproduction 64. When the user instructs the system operation unit 15 to eject the disk, all of the disk dirt information, dirt detection results, and dirt warnings stored in the nonvolatile memory 30 are cleared 67 (no dirt, no results) Then, the disk is ejected 68 by an unillustrated ejecting mechanism, and this sequence is completed.

  On the other hand, after the completion of the second and subsequent loadings, because the dirt warning record storage 62 at the time of the previous loading indicates “dirt warning record is present”, the dirt warning display 61 is not performed according to the determination process 59, but immediately. A recording / playback permission display 60 is displayed on the LCD 12. By avoiding repeated warnings and promptly shifting to the recording / reproducing 64, the operability is improved and the recording / reproducing opportunity is secured.

  In summary, the recording / playback permission display 60 is displayed on the LCD 12 and the recording / playback instruction is waited for when the disk is not dirty and when the disk is dirty, but the disc is continued at the discretion of the user. This is when the use is permitted.

  Next, the operation after recording / reproduction is permitted will be described. After the recording / playback permission display 60 is displayed on the LCD 12, if the user gives a recording / playback instruction from the system operation unit 15, the recording or playback is executed according to the recording / playback operation described with reference to FIG. The

  When the mounted disc is replaced after the recording / reproduction is finished, after the user gives an instruction to eject the disc from the system operation unit 15, the disc contamination information, the contamination detection result, which is stored in the non-volatile memory 30, After all the dirt warnings are cleared 67 (no dirt, stored again in the non-volatile memory 30 without warning results), the disk is ejected 68 by an eject mechanism (not shown), and this sequence is completed.

  When the mounted disk is to be used continuously, the user instructs the system operation unit 15 to turn off the power and puts the apparatus into a non-energized standby state. The next time the apparatus is used, the user instructs the system operation unit 15 to turn on the power, and this sequence is re-executed from the power on 52. That is, the second loading is started.

  Next, the operation sequence in the present invention will be described with reference to FIG. FIG. 3 shows a sequence example of the optical disk apparatus in which, when the user performs the power-off operation 72 after the disk is loaded 71, the power is not immediately turned off but the loading is completed 76 and then the power is turned off 78.

  First, features of this sequence will be described. The feature of this sequence is that the loading of the optical disk drive, which takes time, is completed in a scene where the power is turned off, which is relatively unaffected by time. At the completion of loading 76, adjustment parameters optimized for the loaded disk, including servo system adjustment, are determined. These various adjustment parameters are stored in the nonvolatile memory 30 in the apparatus before the power is turned off 78, read out at the time of loading 80 performed at the next power on 79, and reset 81, thereby eliminating various adjustment processes at high speed. Loading (hereinafter simply referred to as high-speed loading) becomes possible. As a result, the waiting time from when the power is turned on until the recording / reproduction preparation is completed can be shortened. In addition, if the user instructs 72 to turn off the power, there is no need to wait for the loading completion 76, and if it is released, the power is automatically turned off, so that the user-friendliness is good. However, when the disc dirt detection process is applied to this sequence, there are the following problems.

  Next, a problem when the disk dirt detection process is applied to this sequence and a solution in the present invention will be described. The disk contamination detection 74 is performed during a period until the loading 73 that is started when the power is turned off is completed. However, in loading that starts when the power is turned off, there is no opportunity to display a dirt warning even if the result of disk dirt detection is “dirty”. This is because, as described above, the user does not wait for the completion of loading and is not even aware that loading is being performed. Therefore, in the present invention, the following methods (1) and (2) are used.

(1) By suspending the dirt warning display when the power is turned off and storing the dirt detection information in the non-volatile memory 30 inside the apparatus, the disk is dirty and once dirty even after the power is turned off. Remember that no warning is displayed. (Fig. 3 Symbol 75)
(2) Waiting for an opportunity to display the dirt warning, the dirt warning of the disc is performed. (Fig. 3 Symbol 88)
That is, in loading 73 when the power-off instruction 72 is triggered, the disk contamination detection 74 is performed, but since the contamination warning cannot be displayed, this is suspended, and the disk is dirty in the nonvolatile memory 30 inside the apparatus. Information indicating that the dirt warning display has never been performed is saved 75. After loading 76 is completed, the adjustment parameters are saved 77, and if the power is turned off 78, a series of power off sequences are completed.

  When the device is used next time, the device is energized (power ON 79) and the high-speed loading starts 80 in response to a power ON instruction from the system operation unit 15 of the user. High-speed loading is completed 82 through processing necessary for recording and reproduction, such as parameter reset 81 for omitting mechanical control and various adjustment processes. Here, when the result of the disk dirt information stored in the nonvolatile memory 30 is “no dirt”, a display 84 indicating that recording / reproduction is permitted is displayed on the LCD 12, and “dirty” is indicated. If it is, a warning display 88 is displayed on the LCD 12. The content of the warning display 88 may be simply a report that the disc is dirty, a content that prompts the user to replace or clean the disc, or allows the user of the apparatus to perform recording and reproduction by allowing the disc to be dirty. It may be a content requesting selection of whether or not to perform. By this display, the user recognizes that the mounted disc is dirty. Subsequently, when replacing or cleaning the mounted disk, the user instructs the system operation unit 15 to eject the disk, and then clears the dirt information of the disk stored in the nonvolatile memory 30 inside the apparatus. After being stored in the non-volatile memory 30 without contamination and without a warning record, the disc is ejected 91 by an eject mechanism (not shown), and this sequence is completed.

  If the user allows the disk to be dirty and instructs the recording / reproducing operation from the system operation unit 15, the recording / reproducing operation described with reference to FIG. According to the above, recording or reproduction is executed. Further, if the mounted disk is to be replaced after the recording / playback is completed, the user instructs the system operation unit 15 to eject the disk, and then clears the dirt information of the disk stored in the nonvolatile memory 30 inside the apparatus. After being stored in the non-volatile memory 30 without contamination and without a warning record, the disc is ejected 91 by an eject mechanism (not shown), and this sequence is completed.

  When the mounted disk is to be used continuously, the user instructs the system operation unit 15 to turn off the power and puts the apparatus into a non-energized standby state. The next time the apparatus is used, the user instructs the system operation unit 15 to turn on the power, and this sequence is re-executed from the power-on 79. That is, the second high-speed loading is started.

  In the embodiments of Example 1 and Example 2 described above, the optical disk drive has been described as an example. However, the application of the present invention may be a magnetic disk drive, regardless of the recording medium.

1 is a block diagram showing a configuration of a camera-integrated optical disc recording / reproducing apparatus according to an embodiment of the present invention. Sequence diagram of embodiment 1 of the present invention Sequence diagram of embodiment 2 of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Sound collecting microphone, 2 ... Audio signal processing circuit, 3 ... Compression / decompression circuit, 4 ... Audio output circuit, 5 ... Speaker, 6 ... External audio output terminal, 7 ... Lens unit, 8 ... Solid-state image sensor (CCD) , 9 ... Video signal processing circuit, 10 ... Video display / output circuit, 11 ... External video output terminal, 12 ... LCD, 13 ... Lens position control circuit, 14 ... Camera buffer, 15 ... System operation unit, 16 ... System controller, DESCRIPTION OF SYMBOLS 17 ... Power supply circuit, 18 ... External power input terminal, 19 ... Camera drive interface circuit, 20 ... Recording medium (optical disk), 21 ... Spindle motor, 22 ... Pickup, 23 ... Servo control circuit, 24 ... Slider motor, 25 ... Signal processing circuit 26 ... reproduction circuit 27 ... recording circuit 28 ... drive controller 29 ... drive buffer 30 ... Volatile memory, 100 ... the camera unit, 200 ... drive unit (optical disk drive section)

Claims (4)

A dirt detecting means for detecting scratches and dirt on the recording surface of the recording medium;
Notification means for notifying information on scratches and dirt on the recording medium;
Determination means for determining the output to the notification means based on the result of the dirt detection means,
When outputting the detection result of the dirt detection means to the notification means, the second notification is suppressed for a period from when the first notification is performed until the recording medium is discharged. Information recording / reproducing apparatus. The information recording / reproducing apparatus according to claim 1,
An information recording / reproducing apparatus that suppresses the stain detection processing by the stain detection means for a period from when the first notification is performed until the recording medium is discharged. The information recording / reproducing apparatus according to claim 1 or 2,
A storage means for storing results detected by the dirt detection means;
When outputting the detection result of the dirt detection means to the notification means, if the first notification is not executable or invalid, the first notification is suspended and the dirt result is saved in the storage means. The information recording / reproducing apparatus is characterized in that when the notification is executable or valid, the first notification is retried based on the contamination result saved in the storage means. The information recording / reproducing apparatus according to any one of claims 1 to 3,
An information recording / reproducing apparatus, wherein the recording medium is an optical disk medium which performs recording and reproduction by a change in reflectance on a disk surface by a laser beam.

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