JPH07169177A - Information recorder - Google Patents

Abstract

PURPOSE:To attain a high speed drive by reading out information without necessitating measurement by the drive. CONSTITUTION:In the case of loading a cartridge 40 in which an optical disk 1 is incorporated in an optical disk device in a direction shown by arrow A, an ID sensor detects the bar code a bar code area 43 provided on a cartridge label 42 stuck to the cartridge 40 and an ID hole 41. The CPU of the optical disk device reads ID by the bar code detected by the ID sensor, and controls the drive of the optical disk device by using information corresponding to the read ID.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording device such as an optical disc device for recording information on an optical disc and reproducing the recorded information.

[0002]

2. Description of the Related Art In an optical disc apparatus, a technique has been conventionally implemented in which an optical disc is individually distinguished and a drive operation (a control amount at the time of recording and reproducing information) is applied to the optical disc, particularly as a tracking servo technique. It has been proposed to measure the eccentricity of an optical disc in a drive (rotational drive of the optical disc) and use it for servo correction.

The characteristic data of each optical disk is measured by the drive and utilized for control. However, the above control can be performed only after the optical disk is loaded and necessary parameters are measured. Therefore, when the drive of the optical disk device is started, the parameter measurement operation of the optical disk is performed.
There was a problem that extended the startup time.

Further, in this method, the drive capacity can be adapted to items directly measured from the optical disk (disk eccentricity used for servo operation, surface wobbling amount, etc.), but it can be adapted to the soft operation of the drive (cache, etc.). As for information, operation history information (access frequency of block address, etc.) of the disk is required, which is not possible with the above conventional method that does not store information.

Even if the usage history can be stored, it is difficult to manage information in 3.5-inch and 5-inch optical discs because there is no ID (identification) for discriminating each disc.

[0006]

As described above, the characteristic data of each optical disc is measured by the drive and utilized for control. In this case, however, the start-up time is extended due to the parameter measurement operation of the optical disc, and However, there is a problem that the information adapted to the software operation of the drive (such as cache) cannot be stored. Therefore, it is an object of the present invention to provide an information recording apparatus capable of reading information and speeding up the drive without requiring measurement by the drive.

[0007]

The information recording apparatus of the present invention is an information recording apparatus for reproducing information by inserting a cartridge incorporating an information recording medium on which information is recorded, which is provided in the cartridge. Identification information recording means for recording identification information for identifying the information recording medium, and storage means for storing characteristic information of the information recording medium corresponding to the identification information of the identification information recording means,
Reading means for reading the identification information of the identification information recording means provided in the cartridge to be inserted, reading means for reading the characteristic information corresponding to the identification information read by the reading means from the storage means, and the reading means. And executing means for reproducing the information on the basis of the characteristic information read in.

The information recording apparatus of the present invention is an information recording apparatus for reproducing information by inserting a cartridge incorporating an information recording medium having information recorded therein, the information recording apparatus being provided in the cartridge, Identifying information recording means for recording identification information, reading means for reading the identifying information of the identifying information recording means when the cartridge is inserted, and the above-mentioned corresponding to the identifying information read by the reading means. And a storage unit for storing characteristic information of the information recording medium.

The information recording apparatus of the present invention is an information recording apparatus for reproducing information by inserting a cartridge incorporating an information recording medium on which information is recorded, which is provided at a predetermined position of the cartridge. A barcode forming area in which a barcode is formed as identification information for identifying the information recording medium, and characteristic information of the information recording medium corresponding to the identification information of the barcode formed in the barcode forming area are stored. Storage means, detection means for detecting the insertion of the cartridge and the bar code formed in the bar code forming area when the cartridge is inserted, and when the detection means detects the insertion of the cartridge, Reading means for reading the identification information for identifying the information recording medium from the detection signal of the barcode detected by the detecting means; And the characteristic information reading reading means from said storage means corresponding to the identification information read by the reading means, and a means for executing the reproduction of information based on the read identification information in the read means.

The information recording apparatus of the present invention is an information recording apparatus for reproducing information by inserting a cartridge incorporating an information recording medium on which information is recorded, the information recording apparatus being provided on the cartridge, Magnetic information recording means for recording magnetic information including identification information for identifying, and characteristic information of the information recording medium stored in correspondence with the identification information included in the magnetic information recorded in the magnetic information recording means. Storage means and magnetic information reading means for reading the magnetic information of the magnetic information recording means when the cartridge is inserted, and identification information is read from the magnetic information read by the magnetic information reading means, and read as identification information. Reading means for reading the corresponding characteristic information from the storage means,
It comprises an executing means for reproducing information based on the characteristic information read by the reading means.

[0011]

According to the present invention, in an information recording apparatus for reproducing information by inserting a cartridge incorporating an information recording medium on which information is recorded, an identification provided on the cartridge for identifying the information recording medium. Information is recorded in the identification information recording means, characteristic information of the information recording medium is stored in the storage means corresponding to the identification information, and the identification information of the identification information recording means provided in the cartridge to be inserted is read. The characteristic information corresponding to the read identification information is read from the storage means, and the information is reproduced based on the read characteristic information.

According to the present invention, in an information recording apparatus for reproducing information by inserting a cartridge incorporating an information recording medium on which information is recorded, the information recording medium is provided at a predetermined position of the cartridge. A bar code is formed in the bar code forming area as identification information for identifying the bar code, and characteristic information of the information recording medium is stored in the storage means in correspondence with the bar code forming information formed in the bar code forming area. When the cartridge is inserted, the insertion of the cartridge and the bar code formed in the bar code forming area are detected by the detection means, and when the insertion of the cartridge is detected by the detection means, the detection means is detected. The identification information for identifying the information recording medium is read from the detected bar code detection signal, and the identification information read by the reading means is read. The corresponding characteristic information is obtained so as to perform the reproduction of the information based on the reading from the storage means, read out the identification information.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an external appearance of a cartridge 40 handled by the optical disk device according to the present invention. The optical disc 1 is incorporated in the cartridge 40, and the cartridge 40 is loaded in the optical disc device in the direction of arrow A. Also, this cartridge 4
An ID hole 41, which is a basic specification, is provided at 0, and a cartridge label 42 is attached at a predetermined position.
Further, the cartridge label 42 is provided with a barcode area (identification information recording means) 43 at a position on the same line in the loading direction of the ID hole 41 (shown by a dotted line in FIG. 1).

FIG. 2 shows an optical disk device according to the present invention. That is, an optical disc (information recording medium)
Grooves (recording tracks) are formed in a spiral or concentric shape on the surface of 1. The optical disc 1 is rotated by a motor 2 at a constant speed, for example. The motor 2 is controlled by a motor control circuit 18.

Recording and reproduction of information on the optical disc 1
This is performed by the optical head 3. This optical head 3
The linear motor 31 is fixed to a drive coil 13 that constitutes a movable portion, and the drive coil 13 is connected to a linear motor control circuit 17. In addition, the linear motor 3
A permanent magnet (not shown) is provided in the fixed portion of No. 1 and the drive coil 13 is excited by the linear motor control circuit 17 so that the optical head 3 is moved in the radial direction of the information recording medium 1 at a substantially constant speed. It has become.

An objective lens 6 is held on the optical head 3 by a wire or a leaf spring (not shown). The objective lens 6 is moved by a driving coil 5 in the focusing direction (optical axis direction of the lens) and driven. The coil 4 allows movement in the tracking direction (direction orthogonal to the optical axis of the lens).

The laser light generated by the semiconductor laser oscillator 9 driven by the laser control circuit 14 is
The optical disc 1 is irradiated with light through the collimator lens 11a, the half prism 11b, and the objective lens 6, and the reflected light from the optical disc 1 passes through the objective lens 6, the half prism 11b, the condenser lens 10a, and the cylindrical lens 10b. It is guided to the photodetector 8.

The photodetector 8 is a 4-division photodetector cell 8.
It is composed of a, 8b, 8c and 8d. The output signal of the photodetector cell 8a of the photodetector 8 is the amplifier 12a.
Is supplied to one end of each of the adders 30a and 30c, the output signal of the photodetector cell 8b is supplied to one end of each of the adders 30b and 30d via the amplifier 12b, and the output signal of the photodetector cell 8c is supplied to the amplifier 12c. Via adders 30b, 30c
The output signal of the photodetection cell 8d is supplied to the other ends of the adders 30a and 30d via the amplifier 12d.

The output signal of the adder 30a is supplied to the inverting input terminal of the differential amplifier OP1, and this differential amplifier OP1 is supplied.
The output signal of the adder 30b is supplied to the non-inverting input terminal of. The output signals of the adders 30a and 30b are supplied to the adder 30e. The output signal of the adder 30e is supplied to the signal processing circuit 19.

The differential amplifier OP1 includes the adder 30a,
A track difference signal is supplied to the tracking control circuit 16 according to the difference of 30b. The tracking control circuit 16 creates a track drive signal according to the track difference signal supplied from the differential amplifier OP1.

The track drive signal output from the tracking control circuit 16 is supplied to the drive coil 4 in the tracking direction. Further, the track difference signal used in the tracking control circuit 16 is supplied to the linear motor control circuit 17.

The linear motor control circuit 17 responds to the track difference signal from the tracking control circuit 16 and the movement control signal from the CPU 23 by applying a voltage corresponding to the moving speed to a drive coil (conductor) 13 in a linear motor 31 described later. Is applied.

The linear motor control circuit 17 uses an electric change inside the drive coil 13 at the moment when the drive coil 13 in the linear motor 31 described later crosses a magnetic flux generated by a magnetic member (not shown). , Drive coil 1
A speed detection circuit (not shown) for detecting the relative speed between the magnetic member 3 and the magnetic member, that is, the moving speed of the linear motor 31 is provided.

The output signal of the adder 30c is supplied to the inverting input terminal of the differential amplifier OP2, and the output signal of the adder 30d is supplied to the non-inverting input terminal of the differential amplifier OP2. As a result, the differential amplifier OP2 supplies a signal regarding the focus point to the focusing control circuit 15 according to the difference between the adders 30c and 30d. The output signal of the focusing control circuit 15 is supplied to the focusing drive coil 5 and is controlled so that the laser light is always in perfect focus on the optical disc 1.

Each photodetecting cell 8a of the photodetector 8 in the state where focusing and tracking are performed as described above ,.
The sum signal of the outputs of 8d, that is, the output signal from the adder 30e reflects the change in the reflectance from the pits (recording information) formed on the track. This signal is supplied to the signal processing circuit 19, and the recording information and address information (track number, sector number, etc.) are reproduced in this signal processing circuit 19. Further, in front of the laser control circuit 14, a recording signal creation circuit 34 is provided as a modulation circuit for modulating the recording signal.

Further, the optical disk device has a focusing control circuit 15 and a tracking control circuit 1, respectively.
6, a D / A converter 22 used for exchanging information between the linear motor control circuit 17 and the CPU 23, a SCSI (small computer standard interface) controller 50 connected to an external (upper model) device, and a SCSI A bus 51 and an ID parameter storage memory (storage means) 52 which is a memory for storing ID parameters are provided.

As the ID parameter storage memory 52, an EEPROM, a battery backup SRAM, a DRAM or the like can be used as a non-volatile memory. The logical configuration of the ID parameter memory 52 is shown in FIG. N per ID
It consists of a fixed length ID block 38 of bytes. The ID block 38 has an ID “X” (identification information) at the head address A.
33 and the remaining parameters (characteristic information) 34 to 36. In this way, other ID blocks have IDs as well.
(Identification information) and the remaining parameters (characteristic information).

Servo information (focus gain, offset, band, eccentricity amount, tracking gain, offset, band, reflectance, etc.), cache information (most access block address, length, latest access block address) are used as the ID parameters 34 to 36. , Length) and management information (usage history, user name, etc.).

The tracking control circuit 16 includes the C
The objective lens 6 is moved in accordance with the track jump signal supplied from the PU 23 via the D / A converter 22.
The beam light is moved by the amount of the track.

Further, in this optical disc device, an auto loading section 44 for automatically loading the cartridge 40 in which the optical disc 1 is incorporated into the main body of the optical disc device.
And the ID sensor 4 that detects the barcode area 43 and the ID hole when the cartridge 40 is loaded.
5 and an eject switch 46 for ejecting the cartridge 40 are provided and connected to the CPU 23, respectively. The ID sensor 45 uses, for example, a reflection type optical interrupter, and not only detects the ID hole but also reads the barcode in the barcode area 43.

The laser control circuit 14, focusing control circuit 15, tracking control circuit 16, linear motor control circuit 17, motor control circuit 18, signal processing circuit 1
9. The recording signal generating circuit 34 and the like are controlled by the CPU 23 via the bus line 20, and the CPU 23 is adapted to perform a predetermined operation by a program stored in the memory 24.

Since the optical disc 1 is copied in large numbers from the same stamper, generally, an ID (identification) for distinguishing each is not added. If the individual optical discs 1 can be distinguished from the drives, the seek operation can be speeded up and reliability can be improved by adjusting the servo operation and optimizing the mechanical characteristics (surface deviation, eccentricity, etc.) of each optical disc 1. .

The usage of the optical disc 1 (recorded contents,
By adapting the cache function to the access block deviation, seek frequency, etc., the read cache hit rate can be improved and the drive speed can be increased, which is convenient.

In general, a 3.5-inch optical disk device is often used as a computer peripheral for each closed individual user. Therefore, it is sufficient to manage the ID for each drive user.

Therefore, in this embodiment, a bar code is printed in the bar code area 43 of the cartridge label 42 as described above, and the ID of the optical disk 1 is used by using this bar code.
Is read by the ID sensor 45 when the cartridge 40 is loaded into the optical disk device.

The ID hole 41 is the cartridge 40.
However, the ID sensor 45 is originally used for detecting the ID hole 41, but can also be used for reading the bar code of the present invention. Therefore, it is also used for reading barcodes.

Next, the drive operation of the optical disk 1 having such a configuration will be described with reference to the flow charts of FIGS. First, when the cartridge 40 having the optical disc 1 incorporated therein is loaded by the auto loading unit 44, the ID sensor 45 detects the bar code area 43 and the ID hole 41.

The CPU 23 reads the bar code ID from the detection signal from the ID sensor 45. Although a dedicated decoding circuit may be used for reading the ID, the CPU 23 is generally used.
Since the load during loading is light, CP is used in this embodiment.
Perform using U23.

When the CPU 23 succeeds in reading the ID, the CPU 23 stores the I stored in the ID parameter storage memory 52.
If there is a matching ID by referring to D, the information (servo information, cache information, usage history of the optical disc 1, etc.) is read, and if it is not saved, an area for newly recording an ID parameter is secured.

At this time, if there is no area for newly recording the ID parameter, the CPU 23 reserves the ID area having the oldest usage history in the new ID parameter area. However, the rewriting of the ID parameter by the CPU 34 is performed after the optical disc 1 is accessed at least once and the reading or writing is successful.

If there are ID parameters 34 to 36, C
The PU 34 uses the read servo information to pull in the focus of the focusing control circuit 15, which is a servo circuit,
The tracking servo of the tracking control circuit 17 is set, and when the cache information is obtained, the memory 24 having a cache function and the recording signal generating circuit 34 are adjusted by the cache information. For example, the read-ahead cache can be performed on the most accessed block and / or the most recently accessed block to improve the cache hit rate at the first read. The cache information is updated every access operation.

When the ID parameters 34 to 36 are not present, that is, when the ID is new, the CPU 34 performs the servo operation using the default (standard value) parameter. C
The PU 34 determines the ID parameter 3 based on the servo error signal.
The servo information by 4 to 36 is corrected, and when the recording / reproducing of the information is completed and the eject switch 46 is pressed to eject the cartridge 40 (optical disk 1), the servo information is updated.

The use history of the optical disc 1 on the ID parameters 34 to 36 can be used by the user for optical disc management by making it readable by the user. Further, in the case of a drive failure, it can be used together with the used optical disc 1 for analyzing a defect. The usage history of the optical disc 1 is updated when the optical disc 1 is ejected.

Although the bar code is used in the above embodiment, a magnetic stripe may be provided. In the case of the magnetic stripe, a dedicated reproducing head is required. However, in this case, not only the reading of the ID but also simple information such as the date and time of last use and the name of the cartridge can be recorded at the time of ejection. This recorded information can be obtained simply by inserting the optical disc into the drive (without spinning up), and is effective when it is desired to quickly check the contents (table of contents) of the cartridge.

As described above, according to the above embodiment,
By adding a barcode to the cartridge 40 of the optical disc 1, detecting the barcode, reading the ID, and adjusting the cache function, servo function, and the like of the optical disc 1, the drive can be sped up.

The ID management of such an optical disk can be performed by an application (generally considered as software on the upper level of SCSI). For example, in MS-DOS, each optical disk can be managed by attaching a volume to the optical disk.
Further, it is conceivable that an ID is recorded in an area which is not disclosed to general users on the optical disc and the drive manages the ID to use it.

On the other hand, the present invention is a closed system that is not affected by the standard of the optical disc and its application, is not affected by the change of other standard, and the change of other standard is not necessary. For example, there is no problem even if the volume management method of MS-DOS is changed by version change, or the volume information is rewritten by application software. Further, no matter how the general user private area is rewritten or erased on another drive, it is not affected.
Therefore, the ID function of the present invention can be realized by the optical disk device alone, and does not affect the optical disk compatibility with other optical disk devices.

In the present invention, since the user himself / herself manages the ID, it is conceivable that another optical disk having the same ID must be handled by exchanging the optical disks between the users. And the first servo pull-in becomes unstable, and once the operation is started, the drive performance becomes normal. Such a phenomenon is not a phenomenon peculiar to the present invention, and is generally common to systems that add an ID to an optical disc after shipping.

Since the number of optical disk cartridges frequently used by individual drive users is considered to be about several tens at most, the ID parameter storage memory in the optical disk device may be about several tens of KB, and the memory cost is low.
Further, since it is only necessary to distinguish about 100 IDs in the cartridge label, the number of code digits is about 3 digits, and the recording density of the ID code can be lowered, so that the reliability is high and the label production cost is low. In the above embodiment, a 3.5-inch optical disk has been described, but the present invention is not limited to this, and is applicable to, for example, 5 inches and 12 inches.

[0050]

As described above in detail, according to the present invention,
It is possible to provide an information recording device capable of reading information without requiring measurement by the drive and speeding up the drive.

[Brief description of drawings]

FIG. 1 is a diagram showing an appearance of a cartridge in which an optical disc handled by an optical disc device according to the present invention is incorporated.

FIG. 2 is a block diagram showing a schematic configuration of an optical disc device according to the present invention.

FIG. 3 is a diagram showing a logical configuration of an ID parameter memory.

FIG. 4 is a flowchart for explaining a drive operation of the optical disc 1.

FIG. 5 is a flowchart for explaining a drive operation of the optical disc 1.

[Explanation of symbols]

 1 ... Optical disc 23 ... CPU 40 ... Cartridge 41 ... ID hole 42 ... Cartridge label 43 ... Bar code area 44 ... Auto loading part 45 ... ID sensor 46 ... Eject switch 52 ... ID parameter storage memory

Claims (4)

[Claims] 1. An information recording device for reproducing information by inserting a cartridge incorporating an information recording medium having information recorded therein, wherein identification information for identifying the information recording medium is provided on the cartridge. Identification information recording means recorded, storage means for storing characteristic information of the information recording medium corresponding to the identification information of the identification information recording means, and identification information recording means provided in the cartridge to be inserted. Reading means for reading the identification information, reading means for reading the characteristic information corresponding to the identification information read by the reading means from the storage means, and reproduction of the information based on the characteristic information read by the reading means. An information recording apparatus comprising: an executing unit. 2. An information recording device for reproducing information by inserting a cartridge incorporating an information recording medium on which information is recorded, the identification information being provided on the cartridge and identifying the information recording medium. Identification information recording means recorded, reading means for reading the identification information of the identification information recording means when the cartridge is inserted, and characteristic information of the information recording medium corresponding to the identification information read by the reading means An information recording apparatus comprising: a storage unit that stores the information. 3. An information recording apparatus for reproducing information by inserting a cartridge incorporating an information recording medium on which information is recorded, which is provided at a predetermined position of the cartridge and identifies the information recording medium. A barcode forming area in which a barcode is formed as identification information, storage means for storing characteristic information of the information recording medium corresponding to the identification information of the barcode formed in the barcode forming area, and the cartridge. Detecting means for detecting the insertion of the cartridge and the barcode formed in the barcode forming area when the cartridge is inserted, and the detecting means for detecting the insertion of the cartridge when the detecting means detects the insertion of the cartridge. Reading means for reading the identification information for identifying the information recording medium from the detection signal of the barcode, and the reading means. An information recording apparatus comprising: a reading unit that reads characteristic information corresponding to the identification information from the storage unit; and an executing unit that reproduces the information based on the identification information read by the reading unit. . 4. An information recording apparatus for reproducing information by inserting a cartridge incorporating an information recording medium on which information is recorded, the identification information being provided on the cartridge and identifying the information recording medium. Magnetic information recording means for recording the included magnetic information; storage means for storing characteristic information of the information recording medium corresponding to identification information included in the magnetic information recorded in the magnetic information recording means; When the cartridge is inserted, the magnetic information reading means for reading the magnetic information of the magnetic information recording means, and the identification information read from the magnetic information read by the magnetic information reading means, and the characteristic information corresponding to the read identification information A reading means for reading from the storage means; and an executing means for executing reproduction of information based on the characteristic information read by the reading means. Characteristic information recording device.