JP2006309826A - Recording and reproducing device ,and recording and reproducing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly confirm the state of a disk medium while suppressing power consumption. <P>SOLUTION: Since the presence/absence of the insertion of a disk and information recorded in the disk can be confirmed from a storage memory without rotating the disk, power required for rotating the disk is suppressed, and it does not take time to confirm the information recorded in the disk and the presence/absence of the insertion of the disk. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a recording / reproducing apparatus, a recording / reproducing method, a computer program, and a recording medium, and more particularly to a technique suitable for use in confirming whether or not a disc is inserted and information recorded on the disc.

  Conventionally, a recording / reproducing apparatus for recording image data and audio data on an optical disk such as a DVD is known. In this type of recording / reproducing apparatus, management information including data arrangement on the optical disc and information on free space is recorded in a predetermined area on the optical disc, and the optical disc is recorded on the basis of the management information. Data recording / playback is performed.

  Normally, the management information is recorded in a predetermined area on the inner or outer peripheral side of the optical disc. In a recording / reproducing apparatus, management information recorded in a predetermined area on the optical disk is read out and stored in an internal memory when the optical disk is mounted or when the power is turned on, and the contents of the management information are recorded along with the recording / reproducing operation. Update. Then, the management information is read from the memory and recorded on the optical disc in response to power-off or ejection of the optical disc. As a conventional example having such a recording means, there is, for example, Patent Document 1.

Japanese Patent Laid-Open No. 5-128534

  As described above, in an apparatus for recording / reproducing data with respect to an optical disk, it is necessary to read management information from the optical disk when the power is turned on or when the disk is mounted. It was hanging. For example, when the management information is recorded on the inner and outer peripheral sides of the optical disc, it is necessary to read the management information while moving the information reading head from the inner peripheral side to the outer peripheral side. take time. Against this background, if you want to know the status of the optical disc installed in the recording / playback device (recording remaining amount, etc.), you need to read the management information from the optical disc again as described above, and turn on the power each time. I had to confirm it, and it was very inconvenient.

  Also, when turning on the power or mounting the optical disk, in addition to reading the management information, the data on the optical disk is pre-determined at different laser intensities, and then this data is read to obtain the optimum laser intensity. Adjustment processing is performed. In the case of a write-once type optical disc such as a DVD-R, the area once used for trial writing cannot be used again, so the number of times that the laser intensity can be adjusted is also determined. However, as described above, when the power is turned on to check the state of the optical disc, trial writing on the optical disc is performed, and the trial writing area is wasted.

  In addition, when the power is turned on to check the status of the optical disk, it is necessary to rotate the optical disk at a predetermined rotation speed and irradiate the light beam to read the management information. Will do. In particular, in a device operated by a battery drive such as a video camera, it is desired to reduce the power consumption as much as possible. Turning on the power of the device only to check the state of the optical disk can reduce the power consumption. It was not efficient.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to make it possible to confirm the state of a disk medium quickly and with reduced power consumption.

  The recording / reproducing apparatus of the present invention comprises a power switch means capable of arbitrarily turning on / off the power of the apparatus, information data for a disc-shaped recording medium mounted in a state where the power is turned on by the power switch means, and Recording / reproducing means for recording / reproducing management information relating to the recording state of the information data, and disc information relating to the mounted disk-like recording medium based on the management information reproduced from the disk-like recording medium by the recording / reproducing means. Detection means for detecting, storage means for storing disk information detected by the detection means in a storage medium, and disk information stored in the storage medium in a state where the power is turned off by the power switch means Memory holding means and display the disk information held in the storage medium on a display device And instructing means capable of instructing the Rukoto, in accordance with an instruction by said instruction means, and having a control means for displaying the disk information held in the storage medium on the display device.

  The recording / reproducing method of the present invention includes a power switch step capable of arbitrarily turning on and off the apparatus, information data for a disc-shaped recording medium loaded in a state where the power is turned on by the power switch step, and Recording / reproducing process for recording / reproducing management information relating to the recording state of the information data, and disc information relating to the mounted disk-like recording medium based on the management information reproduced from the disk-like recording medium by the recording / reproducing process. A detecting step for detecting, a storing step for storing the disc information detected in the detecting step in a storage medium, and the disc information stored in the storage medium in a state where the power is turned off by the power switch step Storage holding process and display of disk information held in the storage medium on a display device An instruction step capable of directing the Rukoto, in accordance with an instruction by said instructing step, characterized by a control step of displaying the disc information stored in the storage medium on the display device.

  The computer program according to the present invention includes a power switch step capable of arbitrarily turning on and off the apparatus, information data on a disc-shaped recording medium loaded in a state where the power is turned on by the power switch step, and Recording / reproducing process for recording / reproducing management information relating to the recording state of information data, and detecting disc information relating to the loaded disk-like recording medium based on the management information reproduced from the disk-like recording medium by the recording / reproducing process A storage step for storing the disk information detected in the detection step in a storage medium, and a storage for holding the disk information stored in the storage medium in a state where the power is turned off by the power switch step Displays the holding process and the disk information held in the storage medium A recording / reproducing method comprising: an instruction step capable of instructing display on a display; and a control step of causing the display device to display disk information held in the storage medium in response to an instruction from the instruction step Is executed by a computer.

  The recording medium of the present invention records the computer program described above.

  According to the present invention, the presence / absence of the disc inserted and the information recorded on the disc can be confirmed from the storage memory, so that the information can be obtained without rotating the disc. As a result, the power required to rotate the disc can be eliminated, and the time for checking the information recorded on the disc and whether or not the disc has been inserted can be greatly reduced. It is possible to solve a major problem occurring in the recording / reproducing apparatus.

(First embodiment)
Hereinafter, a preferred embodiment of the recording / reproducing apparatus according to the present invention will be described in detail with reference to FIG.
FIG. 1 is a block diagram showing an example of a recording / reproducing apparatus according to the present embodiment.
As shown in FIG. 1, the recording / reproducing apparatus includes a camera unit 38, an output unit 39, a control unit 40, and a recording / reproducing unit 41.

  The camera unit 38 includes a microphone 1, an audio input processing circuit 2, a lens unit 3, a CCD 4 as an imaging sensor, a camera video signal processing circuit 5, and a driver 6 that drives the lens unit 3.

  The output unit 39 includes a compression / expansion processing circuit 7 that compresses / decompresses a video signal and an audio signal, an audio output circuit 8, an audio output terminal 9, an LCD (liquid crystal display) 10 as display means, and a video output. A terminal 11 and a video display / output processing circuit 12 are provided.

  The control unit 40 includes a first D-RAM 13, a first control microcomputer 14 on the camera side, a flash memory 15 (first F-ROM), a built-in battery 16, and an insertion / extraction detection for detecting the presence or absence of an optical disk. Unit 17, first EEP-ROM 18 as a nonvolatile memory, interface (I / F) circuit 19, power switch 20 of the apparatus, Info (Information) button 42 for displaying information on the optical disk, voltage And a monitoring device 43.

  The recording / reproducing unit 41 performs processing of an optical disk 25 as a recording medium, a spindle motor 26 that rotates and drives the optical disk 25, a pickup 27 that records or reproduces an information signal on the optical disk 25, a reproducing circuit 28, and a recording signal or reproducing signal. A signal / control processing circuit 29 to perform, a second D-RAM 30, a feed motor 31 for moving the pickup 27 in the substantially radial direction of the optical disc 25, a recording circuit 32, an S-RAM 33, a second F-ROM 34 as a flash memory, Driving the second EEP-ROM 35 as a non-volatile memory, the spindle motor 26, driving the feed motor 31, and driving an actuator (not shown) for performing focus control and tracking control of the objective lens in the pickup 27 Actuator driver 36 for recording And a second control microcomputer 37 of the raw part.

  In the configuration of the recording / reproducing apparatus in the present embodiment described above, each memory is used in accordance with its characteristics. For example, the first D-RAM 13 and the second D-RAM 30 are used for temporarily storing data such as processing data of the compression / decompression processing circuit 7 and processing data of the first control microcomputer 14. . The S-RAM 33 is used for temporarily storing work data of the second control microcomputer 37.

  The first F-ROM 15 stores a program for operating the first control microcomputer 14 and the like, thumbnail information of contents recorded on the optical disc 25, presence / absence of the optical disc, and type of the optical disc 25 (DVD + RW, DVD-R, etc.) ), The remaining recording capacity of the optical disc 25 is recorded. The second EEP-ROM 35 stores state information such as the mechanical system.

  Both the first and second F-ROMs 15 and 32 and the first and second EEP-ROMs 18 and 35 are nonvolatile electrically recordable and erasable memories. The first and second F-ROMs The ROMs 15 and 32 are used for storing large capacity information, and the first and second EEP-ROMs 18 and 35 are used for storing small capacity information.

  In the camera unit 38, the image information is converted into an electric signal in the CCD 4 as an imaging sensor via the lens unit 3 driven by the driver 6, and then converted into a video signal in the camera video signal processing circuit 5. On the other hand, the audio is converted into an audio signal in the audio input processing circuit 2 via the microphone 1. The converted video signal and audio signal are output to the compression / expansion circuit 7 of the output unit 39.

  In the output unit 39, the video signal and the audio signal are converted into a digital video signal and an audio compression signal in the compression / decompression processing circuit 7, respectively. As a compression method, an MPEG method that handles moving images, a JPEG method that handles still images, or the like is used. The digital video signal output from the compression / expansion processing circuit 7 is displayed on the LCD 10 as a display means via the video display / output processing circuit 12 and is output from the video output terminal 11. The audio compression signal is output to the audio output terminal 9 via the audio output circuit 8.

  The control unit 40 operates when the power switch 20 is turned on and a required voltage and current are supplied from the power source to each means. The first control microcomputer 14 controls the lens unit 3 via the driver 6 so as to capture the subject as an image on the CCD 4 as the imaging sensor. These signals are sent to the signal / control processing circuit 29 of the recording / reproducing unit 41 via the interface circuit 19.

  The first control microcomputer 14 controls the compression / decompression processing circuit 7 to compress a moving image or a still image into a digital signal and temporarily store it in the first D-RAM 13. Further, the presence / absence of the optical disk 25 detected by the insertion / extraction detection unit 17, the remaining battery level of the battery 23 transmitted from the voltage monitoring unit 43, the type and recording of the optical disk transmitted through the interface (I / F) circuit 19. Control is performed so that information such as the remaining amount and thumbnails of contents recorded on the optical disc are stored in the first F-ROM 15.

  Further, when the Info button 42 is monitored and the Info button 42 is turned on, the disc information recorded in the first F-ROM 15 is read and displayed on the LCD 10. Further, the power supply processing of the camera unit 38 is performed such as monitoring the charging circuit 21 to check the power supply state and controlling the power supply switch circuit 20.

  The built-in battery 16 is used as a power source for holding backup information such as date and time, and for an insertion / extraction detection of the insertion / extraction detection unit 17. The insertion / removal monitoring unit 17 is means for detecting or monitoring the insertion / removal of the optical disc 25. As a specific configuration, for example, there is a configuration in which a switch for detecting insertion / removal of the optical disc 25 is provided in the insertion unit. The detection switch may output an electric signal as a detection signal in a state where power is supplied from the built-in battery 16, a battery 23 described later, or a solar cell, and has a storage function. A configuration may be employed in which the state of the mechanical element is detected by an electrical sensor and information is transmitted to the control means.

  In the recording / playback unit 41, the moving image or still image information input from the interface circuit 19 is converted into a recording format corresponding to the optical disk 25 in the signal / control processing circuit 29 and the second D-RAM 30, and the recording circuit 32 Then, it is recorded on the optical disc 25 via the pickup 27.

  As for the relative position of the optical disc 25 and the pickup 27, the pickup 27 is reproduced in a time-division manner, the position information written in advance from the optical disc 25 is detected via the reproduction circuit 28, and the signal / control processing circuit 29 and the second control microcomputer 37. As a result, the spindle motor 26, the feed motor 31, and an actuator (not shown) provided in the pickup 27 are driven via the actuator driver 36.

  In the S-RAM 33 and the second F-ROM 34, calculation data of the second control microcomputer 37 is temporarily stored, a program or the like is stored. Further, the second EEP-ROM 35 as a nonvolatile memory stores calculation data and the like.

  The above operation is performed when information signals are recorded, but in the case of reproduction, operations opposite to these are performed. That is, information is detected from the optical disc 25 via the pickup 27 and the reproduction circuit 28, and the recording format corresponding to the optical disc 25 is demodulated by the signal / control processing circuit 29 and the second control microcomputer 37. Then, the data is returned to the compression / expansion processing circuit 7 via the interface circuit 19. Here, the compressed video signal and audio signal are expanded and output to the display means 10, audio output terminal 9 and video output terminal 11 via the video display / output processing circuit 12 and the audio output circuit 8.

  Furthermore, the recording / reproducing apparatus according to the present embodiment has an external power input terminal 22 as a power supply unit, and can be supplied with power from the outside. Further, the battery 23 can be charged by driving the charging circuit 21 with the external power supply via the external power supply input terminal 22.

  When the external power supply is supplied, the external power is converted into a required voltage by the DC-DC converter 24 and supplied to each block. When the external power supply is not connected, the power from the battery 23 is DC-DC. It is supplied to each block via the converter 24.

  The types of the optical disc 25 include, for example, a DVD-ROM as a read-only disc, a DVD-R as a write-once optical disc, a DVD-RW and a DVD-RAM as rewritable optical discs. The Info button 42 can also be used when the power switch 20 is off and no power is supplied from the battery 23. When the Info button 42 is pressed, the recorded contents of the optical disc 25 inserted in the disc device into the LCD 10 are displayed. The type of the optical disk 25, the remaining recording capacity, or the like, or that the optical disk 25 is not inserted is displayed.

  Specific information displayed on the LCD 10 includes information such as the recording contents of the optical disc 25 inserted in the recording / reproducing apparatus, the type and remaining recording amount of the optical disc 25, the presence / absence of the optical disc 25, and the remaining battery level. . Hereinafter, information displayed on the LCD 10 when the Info button 42 is pressed is referred to as media information.

  The voltage monitoring device 43 is for monitoring the battery capacity of the battery 23, and when the user turns off the power of the recording / reproducing device, before the battery 23 is consumed and the power is turned off, or at regular intervals. The remaining battery level of the battery 23 at that time is detected, and the calculated remaining battery level is transmitted to the first control microcomputer 14.

  FIG. 2 is a diagram showing an example of a data structure of management information in the optical disc 25 as a recording medium of the recording / reproducing apparatus of the present embodiment. In the present embodiment, file management information 201 indicating the recording position of data recorded on the optical disc 25 and defect management information 202 indicating unrecordable sectors on the optical disc 25 are recorded and reproduced on the optical disc 25. To do.

  As shown in FIG. 2, the file management information 201 and the defect management information 202 are recorded separately in an inner peripheral area and an outer peripheral area of the optical disc 25, respectively. In each area, defect management information 202 and file management information 201 having the same contents as the opposite area are recorded.

  In the present embodiment, in the DVD-RAM disc, two defect management information recording areas and one file management information recording area are provided in the inner peripheral area, and 2 in the outer peripheral area. Similarly, one defect management information recording area and one file management information recording area are provided. The defect management information 202 recorded in the total four defect management information recording areas has the same contents, and the file management information 201 recorded in the two file management information recording areas has the same contents.

  In this way, by placing management information having the same contents in a plurality of locations (plural areas), the reliability of data reproduction is increased, and the recording and reproduction due to fingerprints and dust are less likely to be affected.

  When recording or reproduction is performed with the optical disc 25 having such a configuration, the defect management information (first management information) 202 at the four locations (four recording areas) related to the optical disc 25 is stored prior to the recording or reproduction operation. I need to go read. The defect management information 202 is read in preparation for the recording / reproducing apparatus to use the optical disc 25.

  Hereinafter, a state where the preparation of the recording / reproducing apparatus is completed is referred to as a READY state. “READY” shown in FIGS. 3, 4, 5 and 7 means this state. In a normal system, after reading READY, file management information (second management information) at two locations (two recording areas) in the optical disc 25 when data is read according to the file system defined for the DVD. 201 is read.

FIG. 3 is a flowchart showing an example of a processing procedure from power-on to recording / reproduction start in the recording / reproducing apparatus of the present embodiment.
In FIG. 3, the apparatus is turned on by the operation switch 20 in step S50, and it is then determined in step S51 whether or not the optical disc 25 is loaded in the apparatus.

  If the result of this determination is that the optical disc 25 has been loaded, processing advances to step S52, where the spindle motor 26 is rotated. If the result of determination in step S <b> 51 is that the optical disc 25 is not loaded, the process ends.

  After the rotational speed of the spindle motor reaches a predetermined value in step S52, the process proceeds to step S53, and various offsets such as the pickup 27 and actuator driver 36 are adjusted. Thereafter, the process proceeds to step S54, and a laser is emitted on the pickup 27.

  Next, in step S55, the focus control is performed, and the laser beam is narrowed down on the disk recording surface to form a minute spot. Next, in step S56, the fine spot is controlled in the radial direction of the optical disc 25 to perform tracking control for positioning on the track on the optical disc 25.

  Then, after performing gain adjustment for the focus and tracking control in step S57, the process proceeds to step S58, and defect management information (first management information (DMA)) 202 at two locations on the inner peripheral side is read. Next, in step S59, after performing a recording test on the inner circumference side, the process proceeds to step S60, and seeks to the outer circumference side. Thereafter, the process proceeds to step S61, and a recording test is performed on the outer peripheral side. In step S62, the first management information 202 at two locations on the outer peripheral side is read.

  The read preparation sequence from step S50 to step S62 is a method of reproducing all the first management information 202 in the inner peripheral area and the outer peripheral area, so that a highly reliable reproduction result can be obtained. The start-up time until the playback device can play back becomes longer.

  By completing the preparation sequence from step S50 to step S62, the disk device is in the READY state. Subsequently, in step S63, reading of file management information (second management information) 201 in two places (two recording areas) in the optical disc 25 is started when data is read according to the file system.

  In step S64, the above-described media information is detected based on the second management information 201, and stored in the memory in the first control microcomputer 14 or the non-volatile memory that is always supplied with power by the built-in battery 16. To do.

FIG. 4 is a flowchart showing an example of a recording procedure of media information in the recording / reproducing apparatus of the present embodiment.
In FIG. 4, when the process is started, the lid of the opened disc insertion slot is closed in step S70.

  Next, in step S71, the presence / absence of the optical disc 25 in the recording / reproducing apparatus is confirmed. As a result of the confirmation, if it is confirmed that the optical disk 25 is present, the process proceeds to step S72, and the media information recorded in the memory or nonvolatile memory in the first control microcomputer 14 is compared with the information on the optical disk 25. I do. As a result of this comparison, if the disc has been replaced, or if the recorded information has been changed even if it is the same disc as before, the first control is performed so far in step S73. Instead of the media information recorded in the memory in the microcomputer 14 or the non-volatile memory, the newly read disc information is written.

  Note that if the information has not been changed in the comparison in step S72, the processing ends. If it is determined in step S72 that there is no optical disk 25, it is determined in step ST74 that the optical disk 25 is not inserted in the disk device. Record in memory.

  However, the contents of the optical disc 25 and the remaining recording amount of the media information are also recorded when the information recording operation is completed and when the recording information of the optical disc 25 is deleted. Further, the remaining battery capacity is also performed when the user turns off the power of the recording / reproducing apparatus, immediately before the battery 23 is consumed and the power is turned off, or at regular intervals. Of course, recording of the remaining amount of media information is performed when the information recording operation is completed, when the recording information on the optical disc 25 is deleted, before the battery 23 is depleted and the power is turned off, or at regular intervals. May be.

FIG. 5 is a flowchart showing an example of a procedure from when the Info button 42 is pressed until the media information is displayed on the LCD 10 in the recording / reproducing apparatus of the present embodiment.
In FIG. 5, when the Info button 42 is pressed in step S80, the process proceeds to step S81, and external power that is always supplied with power is supplied. Next, it progresses to step S82 and the 1st control microcomputer 14 starts.

  Next, in step S83, the media information recorded in advance in the memory in the first control microcomputer 14 or the nonvolatile memory is read out. Thereafter, the process proceeds to step S84, and these pieces of information are displayed on the LCD 10 via the video display output circuit 12. When the external power supply is off, power may be supplied from the battery 23 to activate the first control microcomputer 14 to display information.

  As described above, according to the present embodiment, information such as the presence / absence of the optical disc 25 and the content and type recorded on the optical disc 25 can be confirmed without rotating the optical disc 25. Therefore, power consumption for rotating the optical disc 25 can be reduced. Further, it is possible to solve the problem of the conventional recording / reproducing apparatus that it takes a long time to confirm the information recorded on the optical disc 25 and whether or not the optical disc is inserted.

  In the recording / reproducing apparatus described above, an example using an optical disk has been described. However, a disk-shaped magnetic disk such as an MD (Mini Disk) may be used instead of the optical disk.

(Another embodiment according to the present invention)
Each means constituting the recording / reproducing apparatus and each step of the recording / reproducing method in the embodiment of the present invention described above can be realized by operating a program stored in a RAM or ROM of a computer. This program and a computer-readable recording medium recording the program are included in the present invention.

  Further, the present invention can be implemented as, for example, a system, apparatus, method, program, or recording medium, and can be applied to a system composed of a plurality of devices. Moreover, you may apply to the apparatus which consists of one apparatus.

  In the present invention, a software program (in the embodiment, a program corresponding to the flowcharts shown in FIGS. 3 to 5) for realizing the functions of the above-described embodiment is directly or remotely supplied to a system or apparatus. And the case where the computer of the system or apparatus also achieves by reading and executing the supplied program code.

  Accordingly, since the functions of the present invention are implemented by computer, the program code installed in the computer also implements the present invention. In other words, the present invention includes a computer program itself for realizing the functional processing of the present invention.

  In that case, as long as it has the function of a program, it may be in the form of object code, a program executed by an interpreter, script data supplied to the OS, or the like.

  As a recording medium for supplying the program, for example, floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, MO, CD-ROM, CD-R, CD-RW, magnetic tape, nonvolatile memory card ROM, DVD (DVD-ROM, DVD-R) and the like.

  As another program supply method, a client computer browser is used to connect to an Internet homepage, and the computer program itself of the present invention or a compressed file including an automatic installation function is downloaded from the homepage to a recording medium such as a hard disk. Can also be supplied.

  It can also be realized by dividing the program code constituting the program of the present invention into a plurality of files and downloading each file from a different homepage. That is, a WWW server that allows a plurality of users to download a program file for realizing the functional processing of the present invention on a computer is also included in the present invention.

  In addition, the program of the present invention is encrypted, stored on a recording medium such as a CD-ROM, distributed to users, and key information for decryption is downloaded from a homepage via the Internet to users who have cleared predetermined conditions. It is also possible to execute the encrypted program by using the key information and install the program on a computer.

  In addition to the functions of the above-described embodiments being realized by the computer executing the read program, the OS running on the computer based on the instructions of the program is used for the actual processing. The functions of the above-described embodiment can be realized by performing some or all of the processes.

  Furthermore, after the program read from the recording medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion board or The CPU or the like provided in the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows the structural example of the recording / reproducing apparatus in this Embodiment. It is a figure which shows an example of the data structure of the management information in the optical disk for recording / reproducing apparatuses of this Embodiment. It is a flowchart which shows an example of the procedure from power activation in the recording / reproducing apparatus of this Embodiment to the start of recording / reproducing. It is a flowchart which shows an example of the recording procedure of the media information in the recording / reproducing apparatus of this Embodiment. It is a flowchart which shows an example of the procedure until the media information in the recording / reproducing apparatus of this Embodiment is displayed.

Explanation of symbols

1 Microphone 2 Audio input processing circuit 3 Lens unit 4 CCD
5 Camera Video Signal Processing Circuit 6 Driver 7 Compression / Expansion Processing Circuit 8 Audio Output Circuit 9 Audio Output Terminal 10 LCD
11 Video output terminal 12 Video display / output processing circuit 13 First D-RAM
14 First control microcomputer 15 First F-ROM
16 Built-in battery 17 Insertion / removal detection unit 18 First EEP-ROM
19 Interface circuit 20 Power switch 21 Charging circuit 22 External power input terminal 23 Battery 24 DC-DC converter 25 Optical disk 26 Spindle motor 27 Pickup 28 Playback circuit 29 Signal / control processing circuit 30 Second D-RAM
31 Feed motor 32 Recording circuit 33 S-RAM
34 Second F-ROM
35 Second EEP-ROM
36 Actuator driver 37 Second control microcomputer 38 Camera unit 39 Output unit 40 Control unit 41 Recording / playback unit 42 Info button 43 Voltage monitoring unit

Claims (18)

Power switch means capable of arbitrarily turning on and off the power of the device;
Recording / reproducing means for recording / reproducing information data on a loaded disc-shaped recording medium and management information relating to a recording state of the information data in a state where the power is turned on by the power switch means;
Detecting means for detecting disk information relating to the mounted disk-shaped recording medium based on management information reproduced from the disk-shaped recording medium by the recording / reproducing means;
Storage means for storing disk information detected by the detection means in a storage medium;
Storage holding means for holding disk information stored in the storage medium in a state where the power is turned off by the power switch means;
Instruction means capable of instructing to display the disk information held in the storage medium on a display device;
A recording / reproducing apparatus comprising: control means for causing the display device to display disc information held in the storage medium in response to an instruction from the instruction means. A drive mechanism for rotating the disk-shaped recording medium;
Pick-up means for executing data writing and reading while moving in the radial direction of a disk-shaped recording medium that is rotationally driven by the driving mechanism;
The control means displays the disc information on the display device without using the drive mechanism and the pickup means in response to an instruction from the instruction means in a state where the power source is cut off. The recording / reproducing apparatus according to claim 1. The recording / reproducing means rotates the disk-shaped recording medium by the drive mechanism in response to power-on by the power switch means, and reads the management information from the disk-shaped recording medium by the pickup means,
The recording / reproducing apparatus according to claim 1, wherein the storage unit stores disc information newly detected based on management information read by the recording / reproducing unit. The recording / reproducing means rotates the disk-shaped recording medium by the driving mechanism in response to the disk-shaped recording medium being newly installed in the state where the power is turned on, and the pickup means Read the management information from the disk-shaped recording medium,
2. The disk unit according to claim 1, wherein the storage unit erases the previously held disc information and stores the disc information newly detected based on the management information read by the recording / reproducing unit. 2. The recording / reproducing apparatus according to 2.   The recording / reproducing apparatus according to claim 1, wherein the storage medium is a nonvolatile memory. First power supply means for supplying power from a first power supply unit in response to a power-on instruction by the power switch means;
A second power supply means for supplying power from a second power supply unit in a state where the power supply is cut off,
6. The recording / reproducing apparatus according to claim 1, wherein the storage medium holds the disc information when power is supplied from the second power supply unit.   7. The recording / reproducing apparatus according to claim 6, wherein the control unit controls the power supply by the second power source unit. An operation member operable in a state in which the power source is disconnected;
8. The recording / reproducing apparatus according to claim 6, wherein the control unit detects that the operation member has been operated when power is supplied from the second power supply unit. A power switch process that can arbitrarily turn on and off the device; and
A recording / reproducing step of recording / reproducing information data on a loaded disc-shaped recording medium and management information relating to a recording state of the information data in a state where power is turned on by the power switch step;
A detecting step of detecting disc information relating to the mounted disc-shaped recording medium based on management information reproduced from the disc-shaped recording medium by the recording / reproducing step;
A storage step of storing the disk information detected by the detection step in a storage medium;
A storage holding step for holding the disk information stored in the storage medium in a state where the power is turned off by the power switch step;
An instruction step capable of instructing to display on the display device the disk information held in the storage medium;
And a control step of causing the display device to display disk information held in the storage medium in response to an instruction from the instruction step. A drive mechanism for rotating the disk-shaped recording medium;
A pickup step of performing writing and reading of data while moving in a radial direction of a disk-shaped recording medium that is rotationally driven by the driving mechanism;
In the control step, the disc information is displayed on the display device without using the drive mechanism and the pickup step in response to an instruction from the instruction step in a state where the power source is turned off. The recording / reproducing method according to claim 9. The recording / reproducing process rotates the disk-shaped recording medium by the driving mechanism in response to power-on by the power switch process, and reads the management information from the disk-shaped recording medium by the pickup process.
11. The recording / reproducing method according to claim 9, wherein the storing step stores disc information newly detected based on the management information read out by the recording / reproducing step. In the recording / reproducing process, the disk-shaped recording medium is rotated by the drive mechanism in response to the disk-shaped recording medium being newly installed in the state where the power is turned on. Read the management information from the disk-shaped recording medium,
10. The storage step comprises: erasing previously held disc information and storing disc information newly detected based on management information read out by the recording / reproducing step. 10. The recording / reproducing method according to 10.   The recording / reproducing method according to claim 9, wherein the storage medium is a nonvolatile memory. A first power supply process for supplying power from a first power supply unit in response to a power-on instruction in the power switch process;
A second power supply step of supplying power from a second power supply unit in a state where the power supply is cut off,
The recording / reproducing method according to claim 9, wherein the storage medium retains the disc information when power is supplied by the second power supply step.   15. The recording / reproducing method according to claim 14, wherein the control step is controlled by power supplied by the second power source step. An operation member operable in a state in which the power source is disconnected;
16. The recording / reproducing method according to claim 14, wherein the control step detects that the operation member has been operated when power is supplied by the second power supply step. A power switch process that can arbitrarily turn on and off the device; and
A recording / reproducing step of recording / reproducing information data on a loaded disc-shaped recording medium and management information relating to a recording state of the information data in a state where power is turned on by the power switch step;
A detecting step of detecting disc information relating to the mounted disc-shaped recording medium based on management information reproduced from the disc-shaped recording medium by the recording / reproducing step;
A storage step of storing the disk information detected by the detection step in a storage medium;
A storage holding step for holding the disk information stored in the storage medium in a state where the power is turned off by the power switch step;
An instruction step capable of instructing to display on the display device the disk information held in the storage medium;
A computer program for causing a computer to execute a recording / reproducing method including a control step of causing the display device to display disc information held in the storage medium in response to an instruction by the instruction step.   A computer-readable recording medium, wherein the computer program according to claim 17 is recorded.

Images