JP2006079784A - Disk drive device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To quickly read a label surface of an inserted disk. <P>SOLUTION: A music reproducing device which reads and reproduces information recorded on a compact disk 102 is equipped with a roller part 104 which carries the compact disk 102 inserted from an opening part 10a to a readout position, a line sensor 109 which is arranged nearby the opening part 110a orthogonal to the insertion direction of the compact disk 102 and reads the label surface of the compact disk 102, and an HD recording and reproducing device 20 which manages an image of the read label surface. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a disk drive device that reads and reproduces information recorded on a disk.

  When playing back a compact disc (CD) on which music digital information is recorded, it is possible to use a CD changer and to store and play back multiple disc information so that multiple discs can be switched easily. In many cases, a hard disk storage / playback device is used. When viewing the contents of a disc using such an apparatus, the user selects one disc as a viewing target from among a plurality of discs that can be viewed, and then starts playing the content of the disc. Become.

  In the case of a general CD changer, since each of a plurality of disks stored in the apparatus is managed by a number, it is necessary to specify a number in order to select a disk. For this reason, if the user does not remember the correspondence between the number and the type of the disc in advance, the user switches the disc as necessary after listening to each disc. Therefore, the operation related to the selection of the disk is troublesome.

  In the compact disc format, table of contents information called TOC (Table of Contents) is recorded on the innermost circumference of the disc, but only information such as the number of songs and performance time is recorded. It is not possible to obtain information such as a title useful for identification from the TOC. On the other hand, in a disc such as a compact disc, digital information is recorded on one side so as to be optically readable, and a label is attached almost entirely on the other side. On this label, an artist name, a song title, a figure and the like representing the contents of the disc are printed.

  In view of this, a technique has been proposed that facilitates identification of a plurality of discs using the result of optically reading an image printed on the label surface of the disc (see, for example, Patent Document 1 and Patent Document 2). According to the technique described in Patent Document 1, a line sensor directed in the radial direction of the disk is fixed at a position facing the label of the disk arranged on the turntable so that the disk rotates when the disk rotates. The image of the upper label can be read by the line sensor.

JP-A-9-147539 JP-A-9-190671

  However, when attempting to play a disc using a playback device such as a CD player, it is necessary to first load the disc. That is, it is necessary to transport a disc inserted by a user from a slit-like opening provided on the front surface of the reproducing apparatus to a predetermined position on the turntable. Therefore, in the conventional reproducing apparatus in which the line sensor is provided on the turntable, it takes time until the label surface reading is completed after the disk is inserted. Further, when the digital information reading process and the label surface reading process are performed simultaneously, the processing load on the CPU increases.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a disc information reproducing apparatus that can quickly read the label surface of an inserted disc.

  The disc drive device of the present invention is a disc drive device that reads the data from the disc by placing the inserted disc in a predetermined position, and the reading unit that reads the label surface of the disc is placed parallel to the insertion direction. It is characterized in that it is provided on the upstream side in the insertion direction with reference to the intersection existing on the upstream side in the insertion direction among the intersection points formed by the straight line passing through the center of the disc and the outer circumferential line of the placed disk.

  According to the above configuration, the reading unit is based on the intersection existing on the upstream side in the insertion direction among the intersection formed by the straight line passing through the center of the disk placed parallel to the insertion direction and the outer circumference of the disk placed. By providing it on the upstream side in the insertion direction, the label surface can be read while the disc is inserted from the opening and placed in a predetermined position, so the label surface of the inserted disc can be read quickly. Can do. In addition, since reading processing of information recorded on the disc and reading processing of the label surface are not performed at the same time, it is possible to prevent an increase in processing load on the CPU.

  In the disk drive device of the present invention, the length in the direction orthogonal to the insertion direction of the reading unit is equal to or greater than the diameter of the label surface of the disk. According to the above configuration, the entire label surface can be read by one reading when the disc is inserted.

  Furthermore, the disk data management device of the present invention is a disk data management device connected to the disk drive device of the present invention, and is based on the data read by the disk drive device and the label surface of the disk storing this data. A storage unit is provided that stores the read image data in association with each other. According to the above configuration, the data read by the disk drive device and the image data read from the label surface of the disk storing the data are stored in association with each other, thereby being based on the image data read from the label surface. Thus, data read by the disk drive device can be specified.

  According to the present invention, the reading unit is based on the intersection existing on the upstream side in the insertion direction among the intersections formed by the straight line passing through the center of the disk placed parallel to the insertion direction and the outer circumference of the disk placed. By providing it on the upstream side in the insertion direction, the label surface can be read while the disc is inserted from the opening and placed in a predetermined position, so the label surface of the inserted disc can be read quickly. Can do.

  Hereinafter, as an embodiment of the present invention, an example of a music playback device that plays back music information recorded on a compact disc will be described. This music player has a function of reading the label surface of the disc.

(First embodiment)
FIG. 1 is a block diagram showing a configuration example of a music playback device for explaining the first embodiment of the present invention. The music playback device shown in FIG. 1 includes a disk drive device 10, an HD recording / playback device 20, an operation input unit 31, a display unit 32, and an audio output unit 33. The HD recording / reproducing apparatus 20 includes an HD recording / reproducing unit 21 and a control unit 22 for controlling the HD recording / reproducing unit 21.

  The disk drive device 10 can load and remove one compact disk, and reads and reproduces an audio signal recorded on the loaded disk. In addition, the disk drive device 10 can communicate with the HD recording / reproducing device 20.

  The HD recording / reproducing apparatus 20 sequentially accumulates a large amount of information respectively recorded on a plurality of discs according to a user's operation on the hard disk, reads out information on the selected disc as necessary, and outputs it for reproduction.

  The operation input unit 31 is used for input for the user to give an instruction to the music playback device. The display unit 32 displays information necessary for a user's input operation, information about music to be played, and the like on a two-dimensional screen in the form of graphics, characters, images, and the like. The audio output unit 33 is used to output various audio information and music signals for guiding user input operations.

  FIG. 2 is a block diagram illustrating a configuration example of the disk drive device. As shown in FIG. 2, the disk drive device 10 includes a disk transport mechanism 103, a turntable 105, a CLV servo 106, a motor driver 107, a motor 108, an optical system 110, a thread servo 111, an optical system driver 112, a tracking servo 113, A focusing servo 114, a system controller 115, an RF amplifier 116, a DSP 117, a memory 118, an external interface 119, and an image acquisition control unit 120 are provided.

  FIG. 3 is a plan view of the main part of the disk drive device, and FIG. 4 is a side view of the main part of the disk drive device. As shown in FIGS. 3 and 4, in the disk drive device 10, the compact disk 102 is inserted by a user operation from a slit-shaped opening 10 a provided on the front panel of the disk drive device 10. The compact disc 102 inserted from the opening 10 a is transported toward the turntable 105 by driving the disc transport mechanism 103, and is positioned and fixed at a reading position on the turntable 105.

  As shown in FIG. 2, the turntable 105 is rotationally driven in a predetermined direction by a motor 108 coupled thereto. The rotation of the motor 108 is controlled by the CLV servo 106, the motor driver 107 and the system controller 115. The CLV servo 106 changes the rotational speed of the motor 108 according to the position of the head provided in the optical system 110, and controls the linear speed when reading the rotating compact disk 102 to be constant.

  As shown in FIG. 4, the optical system 110 is disposed at a position facing the reading surface of information recorded on the compact disk 102 disposed on the turntable 105, and optically records the information recorded on the compact disk 102. It is equipped with an optical sensor for reading, a laser light source, an objective lens, a positioning mechanism, and the like. The optical system 110 is controlled by the sled servo 111, the optical system driver 112, the tracking servo 113, the focusing servo 114, and the system controller 115 shown in FIG.

  The sled servo 111 performs control for tracking the reading position by moving the position of the objective lens of the optical system 110 in the radial direction of the compact disk 102. The tracking servo 113 adjusts the position of the objective lens in the radial direction so that the focal point of the laser beam emitted from the objective lens is positioned immediately above the data string recorded on the compact disk 102. The focusing servo 114 adjusts the position of the objective lens so that the focal point of the laser beam emitted from the objective lens matches the recording surface on the compact disk 102.

  Information recorded on the compact disc 102 is read by the optical system 110, amplified by the RF amplifier 116, processed by a DSP (digital signal processing unit) 117, and reproduced as an audio signal.

  The system controller 115 is a control unit incorporating a microprocessor and controls the entire apparatus according to a predetermined program. The memory 118 includes a read-only memory (ROM) that stores a program to be executed by the system controller 115 and a read / write memory (RAM) that is used to temporarily store data. The external interface 119 is used for communication between the system controller 115 and the HD recording / reproducing apparatus 20.

  The line sensor 109 is incorporated in the disc transport mechanism 103 and reads the printing content on the label surface of the compact disc 102. The line sensor 109 is configured by arranging a large number of optical sensors in a line in a direction orthogonal to the insertion direction of the compact disc 102, and can optically read an image of one line. Further, as shown in FIGS. 3 and 4, the line sensor 109 is disposed in the vicinity of the opening 10a in a direction orthogonal to the insertion direction of the compact disc 102 and at a position facing the label. The length in the orthogonal direction is equal to the diameter of the label surface of the compact disc 102. Further, the conveyance distance from the position where the line sensor 109 is arranged to the turntable 105 is the same length as the diameter of the compact disk 102. Therefore, when the compact disk 102 moves for loading, the contents of the label surface can be read as a two-dimensional image by repeating the optical reading of the line sensor 109. Note that the length in the direction orthogonal to the insertion direction of the line sensor 109 may be equal to or greater than the diameter of the label surface of the compact disc 102. Further, the line sensor 109 is inserted in the intersection point between the straight line passing through the center of the compact disc 102 placed parallel to the insertion direction and the outer peripheral line of the compact disc 102 placed, not near the opening 10a. What is necessary is just to provide in the insertion direction upstream on the basis of the intersection existing in the direction upstream.

  The image acquisition control unit 120 illustrated in FIG. 2 performs reading control of the line sensor 109 and outputs an image of the label surface read by the line sensor 109 to the system controller 115. As shown in FIGS. 3 and 4, the roller unit 104 provided in the disk transport mechanism 103 includes a driving roller 104 a and a driven roller 104 b that are disposed at positions facing each other across the position through which the compact disk 102 passes. Has been. The compact disk 102 is conveyed while being sandwiched between the driving roller 104a and the driven roller 104b.

  FIG. 5 is a flowchart showing the loading process of the disk drive device. In step S11, the system controller 115 refers to a signal from a sensor (not shown) to identify whether or not the compact disk 102 has been inserted into the opening 10a. If insertion is detected, it will progress to the following step S12. In step S <b> 12, the system controller 115 rotates the drive roller 104 a provided in the disk transport mechanism 103 to transport the compact disk 102 to the reading position on the turntable 105.

  In step S13, a label surface reading process is performed. Specifically, the reading control of the line sensor 109 is repeatedly performed via the image acquisition control unit 120. At this time, since the compact disk 102 is moving at a substantially constant speed immediately below the line sensor 109, the line sensor 109 sequentially reads the print contents of the label on the compact disk 102. The read label image is temporarily held on the memory 118.

  In step S <b> 14, the system controller 115 identifies whether the loaded compact disc 102 has reached the reading position on the turntable 105. When loading is completed, the process proceeds to the next step S15. In step S15, the system controller 115 clamps the loaded compact disk 102 on the turntable 105, and then starts driving the motor 108 to rotate the compact disk 102. In step S16, the system controller 115 controls the optical system 110 and each circuit attached thereto to optically read TOC information (management information) such as the number of songs and performance time recorded on the compact disc 102.

  In step S17, the system controller 115 stores the TOC information obtained in step S16 and the label image read by the line sensor 109 in the memory 118 in association with each other as information on the same disk. In step S18, the system controller 115 sends information indicating that loading of the compact disc 102 is completed to the HD recording / reproducing apparatus 20 via the external interface 119. On the other hand, the HD recording / reproducing apparatus 20 stores the information of the new compact disk 102 in the hard disk every time the compact disk 102 is loaded into the disk drive apparatus 10.

  FIG. 6 is a flowchart showing the disk information registration operation of the HD recording / reproducing apparatus. The control unit 22 of the HD recording / reproducing apparatus 20 also includes a microprocessor. In step S <b> 21, the control unit 22 identifies whether or not a loading completion notification is received from the disk drive device 10 to the HD recording / reproducing device 20. When the compact disk 102 is loaded into the disk drive device 10, the loading completion notification is output as described above, so the process proceeds to the next step S22. In step S <b> 22, the control unit 22 requests the disk drive device 10 to obtain TOC information related to the compact disk 102 currently loaded in the disk drive device 10, and obtains it.

  The HD recording / reproducing apparatus 20 manages information (management information) related to the disk registered in the built-in hard disk using a management table (not shown). The control unit 22 refers to the contents of this management table in step S23. In step S24, the control unit 22 compares the TOC information acquired in step S22 with the information of each disk registered in the management table, and information on the disk currently loaded in the disk drive device 10 is recorded in HD. It is identified whether or not it is already registered on the playback device 20. If not registered, the process proceeds to step S25, and if already registered, the process proceeds to step S28.

  In step S25, the control unit 22 instructs the disk drive device 10 to convert the label information acquired by the disk drive device 10 from the compact disk 102 into an image of a predetermined format. In step S <b> 26, the control unit 22 acquires information on the label converted into an image of a predetermined format from the disk drive device 10.

  In step S27, the control unit 22 creates a new file for storing the music data on the internal memory or the hard disk. In step S28, the control unit 22 instructs the disc drive device 10 to read the music data recorded on the compact disc 102 from the HD recording / playback device 20, and the HD drive / recording device 20 is transmitted by the disc drive device 10. Acquire music data. In step S29, the control unit 22 executes compression and encryption processing of the music data acquired in step S28. In step S30, the control unit 22 stores the music data processed in step S29 in a newly created file or an already created file.

  In step S31, the control unit 22 registers the currently acquired TOC information, label information, and music file in the management table as information of one compact disc 102 in association with each other. On the other hand, when reproducing the information of the disc registered in the HD recording / reproducing apparatus 20, the HD recording / reproducing apparatus 20 executes the reproducing operation shown in FIG.

  FIG. 7 is a flowchart showing the playback operation of the HD recording / playback apparatus. In step S41, the control unit 22 refers to the management table and reads all the label images of all the registered disks. In step S42, the control unit 22 displays a list of all the label images of all the disks read in step S41 on the screen of the display unit 32. If all the label images do not fit on the screen, only a part of the label images may be displayed and the remaining label images may be displayed by scrolling the screen. Since each compact disc 102 has a different label attached thereto, the label images displayed in a list are also different for each disc. Therefore, the user can easily select a desired disk by referring to each label image displayed in a list. Actually, the user can select one of a plurality of label images by operating a touch panel arranged on the screen or operating a cursor moving on the screen.

  In step S43, the control unit 22 extracts the music file associated with the label image selected by the user from the management table and opens it as a reproduction file. In step S44, the control unit 22 expands the music data of the opened reproduction file on the memory, and executes decryption and expansion processing. The music data for which this processing has been completed is D / A (digital / analog) converted by the control unit 22 in step S45, and then output to the audio output unit 33 for reproduction.

  As described above, according to the music playback device of the present embodiment, the line sensor 109 is provided in the vicinity of the opening 10a in the direction orthogonal to the insertion direction of the compact disc 102 and reads the label surface of the compact disc 102. Thus, since the label surface can be read before the disc is inserted from the opening and conveyed to the reading position, the label surface of the inserted disc can be read quickly.

  In addition, since it is not necessary to read information to be played back on the disk, control the rotation of the disk, and various positioning during loading, it is possible to simplify the control of the apparatus and increase the load on the CPU. This is useful for preventing or simplifying the circuit configuration of the control hardware.

(Second Embodiment)
FIG. 8 is a block diagram showing a configuration example of a music reproducing apparatus for explaining the second embodiment of the present invention, and FIG. 9 is a flowchart showing a disc information registration operation of the HD recording / reproducing apparatus. This embodiment is a modification of the first embodiment. In FIGS. 8 and 9, elements and steps corresponding to those of the first embodiment are denoted by the same reference numerals. Only the portions that are changed compared to the first embodiment will be described below.

  As shown in FIG. 8, the music playback device of the present embodiment includes a music information DB 40. The music information DB 40 is a database in which information (management information) such as artist names and music names related to various music is accumulated, and information on each music is registered in a searchable format using TOC information on the compact disc 102 as a key. Yes.

  In FIG. 9, the difference from the first embodiment is that step S32 is added between steps S24 and S25, and step S31 is changed to step S31B. In step S32, the control unit 22 acquires corresponding music information (artist name, music name, etc.) from the music information DB 40 using the TOC information acquired in step S22 as a key. In step S31B, the control unit 22 registers the currently acquired TOC information, label image, music information, and music file in the management table as information of one compact disc 102 in association with each other.

  According to the music playback device of the present embodiment, the disc TOC information and music information (management information) of the read disc and the label image are managed in association with each other, so that the disc is based on either the label image or the management information. Therefore, a desired disk can be easily searched.

  In the above description, an example of a music playback device that plays back music information recorded on a compact disc has been shown, but the present invention can also be applied to the case of playing back information recorded on a disc other than a compact disc.

  The present invention inserts the reading unit with reference to an intersection existing upstream in the insertion direction among intersections formed by a straight line passing through the center of the disk placed parallel to the insertion direction and the outer circumference of the disk placed. By providing on the upstream side in the direction, the label surface can be read before the disc is inserted from the opening and placed at a predetermined position, so the label surface of the inserted disc can be read quickly. It has an effect, and is useful for a disk drive device that reads and reproduces information recorded on a disk.

The block diagram which shows the structural example of the music reproducing apparatus for describing the 1st Embodiment of this invention Block diagram showing a configuration example of a disk drive device Plan view of the main part of the disk drive device Side view of the main part of the disk drive device Flow chart showing loading process of disk drive device Flowchart showing disk information registration operation of HD recording / reproducing apparatus Flow chart showing playback operation of HD recording / playback apparatus The block diagram which shows the structural example of the music reproducing apparatus for describing the 2nd Embodiment of this invention Flowchart showing disk information registration operation of HD recording / reproducing apparatus

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Disc drive apparatus 10a Opening part 20 HD recording / reproducing apparatus 21 HD recording / reproducing part 22 Control part 31 Operation input part 32 Display part 33 Audio | voice output part 40 Music information DB
DESCRIPTION OF SYMBOLS 102 Compact disk 103 Disk conveyance mechanism 104 Roller part 104a Drive roller 104b Driven roller 105 Turntable 106 CLV servo 107 Motor driver 108 Motor 109 Line sensor 110 Optical system 111 Thread servo 112 Optical system driver 113 Tracking servo 114 Focusing servo 115 System controller 116 RF amplifier 117 DSP
118 Memory 119 External Interface 120 Image Acquisition Control Unit

Claims (3)

A disk drive device that reads data from a disk by placing the inserted disk in a predetermined position,
The reading unit that reads the label surface of the disc is based on the intersection existing on the upstream side in the insertion direction among the intersections between the straight line passing through the center of the disc placed parallel to the insertion direction and the outer circumferential line of the placed disc. A disk drive device characterized by being provided upstream in the insertion direction.   2. The disk drive device according to claim 1, wherein the length of the reading unit in the direction orthogonal to the insertion direction is equal to or greater than the diameter of the label surface of the disk. A disk data management device connected to the disk drive device according to claim 1 or 2,
A disk data management apparatus comprising: a storage unit that stores data read by the disk drive device and image data read from a label surface of a disk storing the data in association with each other.

Images