JP2002190152A - Record and/or reproducible device and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a record and/or a reproducible device and its method which can improve the usability. SOLUTION: The record and/or the reproducible device is provided with a reproducible means for reproducing the necessary information, a rotating and driving means for rotating and driving a disk-shaped recording medium, a control means for controlling the reproducible means as well as the rotating and driving means. The control means is so controlled that in the event the necessary information is produced in succession from the first and second domains in the disk-shaped recording medium, the reproducible means is allowed to reproduce the necessary information from the first domain then the reproducible means is made to move from the first domain to the second domain thereafter the reproducible means is permitted to reproduce the necessary information from the second domain while making the rotating and driving means maintain the rotating status in the disk-shaped recording medium while moving.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording and / or reproducing apparatus and method, and more particularly to a CD-R (Compact Disc-Recorder) capable of recording data only once in the same place.
ble) and other optical disks of the Write Once (WO) type, and recording data can be re-recorded in the same location as many times as possible.
The present invention is suitably applied to an optical disk device that records and reproduces recorded data on a rewritable optical disk such as a CD-RW (RW: ReWritable).

[0002]

2. Description of the Related Art Conventionally, in this type of optical disk apparatus, the recording data is recorded by irradiating a recording surface of the optical disk with a light beam modulated in accordance with the recording data.

As one form of such an optical disk device, a spindle motor is controlled so as to have a rotational speed that is inversely proportional to a track radius of the optical disk, and a linear velocity is constant so that the recording and reproducing speed is constant everywhere on the optical disk. There is an optical disk device of CLV (Constant Linear Velocity) system. Hereinafter, a recording process of recording data will be described by taking an optical disk device of a constant linear velocity system as an example.

On the recording surface of a conventional optical disk,
As shown in FIG. 2, a lead-in area A2C is provided on the inner peripheral side of a program area A1 for recording recording data. In the lead-in area A2C, there is provided ATIP (Absolute Time In Pre-groove) which is absolute time information.
), Information on the optical disc such as write power information of a light beam corresponding to the linear velocity at the time of recording (hereinafter, referred to as “
This is referred to as “first necessary information”).

Therefore, in the optical disk device, before recording the recording data, the beam spot position of the light beam is moved to the lead-in area A2C, and the lead-in area A2C is irradiated with the light beam so that the first necessary information is obtained. read.

In such an optical disk device,
The power of the light beam and the like are set according to the read first necessary information, and the light beam having the set power is applied to the program area A1 to record the recording data.

[0007]

In recent years, Orange Book part2, Volume2, V
As disclosed in er0.9, 1x speed is linear velocity 1.4 [m /
As an equivalent to [s], an optical disk device capable of supporting high-speed recording of, for example, 8 to 20 times speed, and an optical disk compatible with this high-speed recording have been proposed. Hereinafter, an optical disk compatible with high-speed recording is referred to as a “special-type optical disk”, and a conventional optical disk that does not support high-speed recording is referred to as a “normal-type optical disk”.

It is necessary to record information on the optical disk such as write power information of a light beam corresponding to the linear velocity at the time of high-speed recording (hereinafter referred to as "second necessary information") on this special type optical disk. However, if the second necessary information is recorded in the above-described lead-in area A2C, when the lead-in area A2C is read, a recording inhibition operation may be activated depending on the model.

Therefore, in such a special-type optical disk, FIG. 2 provided on the outer peripheral side of the program area A2D.
In the lead-out area A2D shown in (2), the second necessary information is recorded in addition to ATIP which is absolute time information.

In this optical disk device, before recording the recording data, the beam spot position of the light beam is first moved to the lead-in area A2C, and then the lead-in area A2C is irradiated with the light beam to obtain the first necessary information. Read.

Next, in this optical disk device, it is determined from the read first required information whether the optical disk is a normal optical disk or a special optical disk.

If the optical disk determined here is a normal type optical disk, the optical disk apparatus sets an appropriate power of the light beam in accordance with the first necessary information, and then transmits the light beam of the set power to the program area. The recording data is recorded by irradiating A1.

If the optical disk is a special type optical disk, the optical disk apparatus moves the beam spot position of the light beam from the lead-in area A2C to the lead-out area while maintaining the rotation speed of the optical disk in the lead-in area A2C. Move to A2D.

In the optical disk device, the rotation speed of the spindle motor is reduced so as to keep the linear velocity in the lead-out area A2D constant, and then the lead-out area A2D is irradiated with a light beam to thereby obtain the second necessary information. After reading, an appropriate power of the light beam is set according to the first and second necessary information read so far, and power calibration is performed with the light beam having the set power.

Here, the power calibration is optimal for keeping the length of the recording mark representing the recording data formed on the recording surface 3A of the optical disk 3 within a predetermined reference length (that is, suppressing the occurrence of asymmetry). Immediately before the start of the recording mode, while writing predetermined trial writing data in the power calibration area A2A so as to obtain the light beam power, the write speed that can be set on the optical disc 3 and the recording surface 3A This means detecting the light beam power according to the material.

In the optical disk device, the recording data is recorded by irradiating the program area A1 with a light beam having the power detected by the power calibration.

However, the light beam is transferred to the lead-out area A.
Before the 2D irradiation, the processing for reducing the rotation speed of the spindle motor is performed as described above, so that the rotation control of the spindle motor is complicated, and the power consumption of the optical disk device is correspondingly increased. In addition, since it takes a lot of time to reduce the rotation speed of the spindle motor, the reading of the second necessary information from the lead-out area A2D is delayed, and the recording process is delayed accordingly. Therefore, there is a problem in that the usability of the optical disk device is deteriorated.

The present invention has been made in view of the above points, and an object of the present invention is to propose a recording and / or reproducing apparatus and a method thereof which can improve the usability.

[0019]

According to the present invention, there is provided a recording and / or reproducing apparatus comprising:
A reproducing unit for reproducing necessary information, a rotation driving unit for driving the disk-shaped recording medium to rotate, and a control unit for controlling the reproducing unit and the rotation driving unit are provided. And when the necessary information is reproduced continuously from the second area, the reproducing means reproduces the necessary information from the first area, and after moving the reproducing means from the first area to the second area, While keeping the rotation state of the disk-shaped recording medium at the time of the movement,
The reproducing means reproduces necessary information from the second area.

As a result, in this recording and / or reproducing apparatus,
Since the rotation state of the disk-shaped recording medium is not changed when the reproducing means reproduces the necessary information from the second area, the rotation control of the rotation driving means is facilitated, and the reproduction of the necessary information from the second area is performed. Can be faster.

According to the present invention, in the recording and / or reproducing method, when necessary information is continuously reproduced from the first and second areas of the disk-shaped recording medium, the necessary information is reproduced from the first area. A first step of moving the area to be reproduced from the first area to the second area, and a second area while maintaining the rotating state of the disk-shaped recording medium during the movement. And a third step of reproducing necessary information from the third step.

As a result, in this recording and / or method, the third
Since the rotation state of the disk-shaped recording medium is not changed when the necessary information is reproduced from the second area in the step, the rotation control of the rotation driving means is facilitated, and the necessary information is reproduced from the second area. Can be faster.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

(1) Configuration of Optical Disc Apparatus According to Embodiment In FIG. 1, reference numeral 1 denotes an optical disc apparatus as a whole according to the present embodiment, in which data D1 provided from a host computer 2 is recorded on an optical disc 3 or is recorded. It can be reproduced from the optical disc 3.

That is, in the optical disk device 1, in the recording mode, data sequentially given from the host computer 2 is fetched into the inside via the interface unit 4, and is sequentially stored in the buffer memory 6 via the encoder unit 5. Has been made.

The encoder unit 5 has a layered ECC (Er
ror Correcting Code) additional processing unit 7, CIRC (Cross
s interleave Reed-Solomon Coad) encoding processing unit 8 and EFM (Eight to Fourteen Modulation) modulation processing unit 9 and sequentially read data D1 stored in the buffer memory 6 in sector units (2 [kbyte] units). After adding an error correction code to the data D1 in the layered ECC adding unit 7, performing a CIRC encoding process and a synchronization data inserting process in the CIRC encoding processing unit 8, and further performing an EFM modulation process in the EFM modulation processing unit 9, The write data D2 thus obtained is transferred to the optical pickup 1 via the RF amplifier 10.
Send to 1.

The optical pickup 11 has an optical system device such as a laser diode, a collimator lens, an objective lens and a light receiving element, and an electric system device such as a laser diode driver, and modulates according to supplied write data D2. The light beam L1 is irradiated on the recording surface of the optical disk 3.

At this time, the optical pickup 11 generates a servo error signal S1 such as a tracking error signal and a focus error signal and a push-pull signal S2 based on the reflected light L2 from the optical disc 3, and generates the servo error signal S1. Servo controller 12 via RF amplifier 10
And the push-pull signal S2 is sent to the ATIP decoder unit 13.

The servo controller 12 controls the spindle motor 15 via the spindle driver 14 based on the supplied servo error signal S1 to rotate the optical disc 3 at a predetermined speed. Servo control unit 1
2 controls a thread motor 17 via a thread driver 16 based on the servo error signal S1 to thereby change a beam spot of the light beam L1 on the optical disk 3 (hereinafter, this is simply referred to as a beam spot) of the optical disk 3. The disk 3 is moved in the radial direction along the data track (pre-groove or land) formed on the recording surface. Further, the servo control unit 12 performs tracking control and focus control by controlling a two-axis actuator (not shown) in the optical pickup 11 via a two-axis actuator driver 18 based on the servo error signal S1.

On the other hand, the ATIP decoder section 13 decodes the supplied push-pull signal S2 to detect the absolute address of the beam spot on the optical disk 3 at that time, and detects this at the CPU (Central Processing).
Unit) 19.

That is, the ATIP decoder section 13 outputs the push-pull signal S1 to the center frequency 2 provided therein.
A wobble component included in the push-pull signal S2 is extracted by passing through a band-pass filter circuit in a range of ± 1 [kHz] of 2.05 [kHz], and the wobble component is subjected to an FM demodulation process. An absolute address on the optical disk 3 where the beam spot is located is detected and sent to the CPU 19 as absolute time information S3.

Further, the ATIP decoder 13 informs each time the absolute address on the optical disc 3 obtained by the above-described decoding process changes (ie, every time the sector scanned by the beam spot on the optical disc changes). A sink interrupt signal S4 is sent to the CPU 19.

Thus, the CPU 19 sequentially recognizes the recording position at that time on the optical disk 3 based on the absolute time information signal S3 and the sync interrupt signal S4 provided from the ATIP decoder 13, and performs recording based on the recognition result. A necessary control process is executed so that the data D2 can be correctly recorded on the optical disc 3.

On the other hand, in the reproduction mode, the CPU 19
Controls the servo control unit 12 to rotate the optical disc 3 at a predetermined speed, move the beam spot along the data track of the optical disc 3, and perform tracking control in the same manner as in the recording mode described above. And focus control is performed.

The CPU 19 drives the laser diode in the optical pickup 11 to emit the light beam L1 toward the optical disk 3. As a result, the light beam L1 is reflected on the recording surface of the optical disk 3, and read data D3 read from the optical disk 3 as an RF signal obtained based on the reflected light is transmitted from the optical pickup 11 to the decoder unit via the RF amplifier 10. 20 given.

The decoder 20 has a PLL (Phase Locked)
Loop) circuit 21, synchronous data detector 22, EFM demodulator 23, CIRC decoder 24, and layered ECC
The demodulation unit 25 extracts a clock from the read data D3 supplied in the PLL circuit 21,
The extracted clock CLK is sent to the synchronous data detection unit 22 together with the read data D3.

The synchronous data detector 22 generates a synchronous data detecting window pulse having a pulse width larger by a predetermined pit before and after the data pattern of the synchronous data described above, based on the supplied clock CLK. Then, the synchronous data detecting unit 22 sequentially detects the synchronous data detecting window pulse, and based on the detection result,
The read data D3 is sequentially transmitted to the EFM demodulation unit 23 in a predetermined unit.

Then, the read data D3 will be
EFM demodulation processing is performed in the FM demodulation unit 23, and the CIRC
The data is converted into data in the original format before recording by being subjected to CIRC decoding processing in the decoding unit 24 and error correction processing in the layered ECC demodulation unit 25, and then to the host computer 2 via the interface circuit 4. Sent out.

As described above, in the optical disk device 1, the data D1 given from the host computer 2 is recorded on the optical disk 3, or the data recorded on the optical disk 3 is reproduced and transmitted to the host computer 2. It has been made possible.

(2) Recording Format of Optical Disk 3 Next, the recording format of the optical disk 3 will be described.

The arrangement and contents of each area on the recording surface 3A of the optical disc 3 are determined in accordance with the physical format specified in the Orange Book.

Actually, on the recording surface 3A of the optical disc 3, in addition to the program area A1 in which the user data (that is, read data) D3 is recorded, additional information for improving the usability of the user is recorded. INFO
RMATION A2 is assigned.

The ATIP TIME INFORMATION A2 has a power calibration area (PCA; Power Calibration).
Area) A2A, Program memory area (PMA; Progr)
amMemory Area) A2B, a lead-in area A2C and a lead-out area A2D.

The recording surface 3A of the optical disk 3 has a power calibration area A2 as shown in FIG.
A, a program memory area A2B, a lead-in area A2C, a program area A1, and a lead-out area A2D are provided in this order from the inner peripheral side.

The power calibration area A2A is an area used for power calibration. Here, the power calibration is an optimal light beam power for keeping the length of the recording mark representing the recording data formed on the recording surface 3A of the optical disc 3 within a predetermined reference length (that is, suppressing the occurrence of asymmetry). Immediately before the start of the recording mode, while recording predetermined trial writing data in the power calibration area A2A on a trial basis, according to the settable writing speed for the optical disc 3 and the material of the recording surface 3A. This means that the light amount of the laser diode in the optical pickup 27 is detected.

The program memory area A2B is an area for temporarily storing various information relating to the recording process of the optical disk 3 (for example, skip information for removing the optical disk 3 during additional recording).

The lead-in area A2C is an area serving as an introduction section for setting the start of recording of the user data D3 recorded in the program area A1.

Further, the lead-out area A2D is an area serving as a deriving unit for setting the end of recording of the user data D3 recorded in the program area A1.

In this lead-in area A2D, a subcode signal which is provided in units of blocks of the supplied user data D3 is written. Such one
As shown in FIG. 3, the block is formed by combining 98 frames having a predetermined data structure, and the subcodes P, Q, R, S, T, U, V, and W of eight channels have the meaning. It is logically configured as the minimum unit to be formed.

Specifically, as shown in FIG. 4, one frame is composed of 24 bits of frame synchronization information and 8 channels of sub-codes assigned 1 bit for each channel.
14-bit subcode information obtained by EFM-modulating 8-bit fixed-length data consisting of P, Q, R, S, T, U, V, and W, and EFM-modulating 8-bit audio data It is composed of audio information in which 32 pieces (32 symbols) of 14-bit audio data are sequentially interleaved and connected by inserting 3 connection bits.

Data corresponding to the Q channel of the subcode signal (hereinafter referred to as “subcode Q data”
DQ is, as shown in FIG. 5, "S0, S1" representing a part of a synchronization pattern, "CONTROL" representing a control signal such as the number of channels of a music signal and presence or absence of pre-emphasis, various modes and addresses. "ADR" for information, "TNO" for track number, "POINT" for index number
”,“ MIN ”which represents the elapsed time in the song as absolute time information,
`` SEC '' and `` FRAME '', `` ZERO '' reserved as a reserve to define commands etc. in the future, `` PMIN '', `` PSEC '' and `` PFRAME '', which indicate the elapsed time in the song with relative time information They are sequentially described in the order of “CRC (Cyclic Redundancy Check)” representing a cyclic redundancy check for detecting an error in data transmission.

The recorded contents of the subcode Q data DQ are as follows:
It is divided into a lead-in area A2C, a program area A1 and a lead-out area A2D, and different contents are recorded in the respective areas A2C, A1 and A2D.

The arrangement pattern of the ATIP information corresponding to the lead-in area A2C in the subcode Q data DQ is arranged such that one frame of extra information is followed by nine frames of normal time code information.
It is configured to repeat continuously and cyclically in frame units.

Such extra information is, for example, in the case of a CD-RW optical disc, special information (Sp
ecial Information) 1-3 and Additional Information (Additional Information) 1-3. By the way, additional information 3
It is currently vacant as a reserve for future use.

Special information 1
Indicates the type of the optical disc 3 (for example, a CD-R or a CD
-RW is present), light beam power corresponding to each recording speed (or linear speed), and the like are recorded.

The special information 2 has a start time of the lead-in area A2C, the special information 3 has a finally settable start time of the lead-out area A2D, and the additional information 1 has a start time set for the optical disk 3. Additional information 2 such as possible writing speeds includes
A light beam power or the like which is an appropriate reference for suppressing the occurrence of asymmetry corresponding to each recording speed is recorded. Based on this reference light beam power,
Power calibration is performed.

Specifically, “MIN”, “SEC” and “FRAM”
E ”as M, S and F, respectively, then (M, S
, F) = (0, 0, 0) represents normal time code information of the program area A1 and the lead-out area A2D. (M, S, F) = (1, 0, 0) represents normal time code information of the power calibration area A2A, the program memory area A2B, and the lead-in area A2C. Also, (M, S, F) = (1, 0,
1) represents special information 1 and (M,
(S, F) = (1, 1, 0) represents special information 2, and (M, S, F) = (1, 1, 1) represents special information 3. In addition, (M, S
, F) = (0, 0, 1) represents additional information 1, (M, S, F) = (0, 1, 0) represents additional information 2, and (M, S)
, F) = (0, 1, 1) represents additional information 3.

When the optical disk 3 is a normal type optical disk, as shown in FIG. 6, the absolute time information corresponding to the lead-in area A2C includes one frame of extra information, special information 1, 2, 3 and additional information. Order in which information 1, 2, and 3 are repeated cyclically (hereinafter, this is referred to as "normal type determination order").
, Time code information for 9 frames is arranged following the extra information.

On the other hand, when the optical disk 3 is a special type optical disk, the absolute time information corresponding to the lead-in area A2C includes, as shown in FIG.
2, 1 and additional information 3, 2,
The time code information for 9 frames is arranged following the extra information while allocating in an order that is cyclically repeated with 1 (hereinafter, this is referred to as “special type determination order”).
On the other hand, the absolute time information corresponding to the lead-out area A2D is also arranged with substantially the same contents as the above-described absolute time information corresponding to the lead-in area A2C. Light beam power and the like are recorded.

(3) Rotation control of spindle motor 15 when acquiring subcode Q data DQ (necessary information) Next, rotation control of the spindle motor 15 when acquiring subcode Q data DQ will be described.

When the optical disk 3 is loaded into the optical disk device 1 and the optical disk 3 is recordable by a user when the loaded optical disk 3 is recordable, the CPU 19 receives the servo control unit 12 and the biaxial actuator driver 18. , The beam spot position of the optical pickup 11 is moved into the lead-in area A2C.

The CPU 19 determines the type of the optical disk based on the recorded contents of the subcode Q data DQ in the lead-in area A2C on the recording surface 3A of the optical disk 3. In such a case, the CPU 19 controls the recording surface 3 of the optical disc 3.
Based on the arrangement order of the absolute time information corresponding to the lead-in area A2C of A, it is determined whether or not the optical disc 3 is a special type optical disc.

In this embodiment, when the CPU 19 determines that the optical disk 3 is a special type optical disk,
While the rotation speed of the spindle motor 15 is maintained via the servo control unit 12 and the spindle driver 14 sequentially (that is, at a constant angular velocity), the beam spot position of the optical pickup 11 is sequentially transmitted via the servo control unit 12 and the biaxial actuator driver 18. To the lead-in area A2
Move from C to the lead-out area A2D.

The CPU 19 controls the spindle motor 1
While maintaining the rotation speed of 5, the readout area A2
The subcode Q data DQ of D is read, and according to the recorded contents of the read subcode Q data DQ, a recording speed and an optical beam power which is a reference at the time of power calibration according to the material of the recording surface 3A are set.

As described above, in the optical disk device 1, the CPU
19, when the loaded optical disk 3 is a special type optical disk, the subcode Q data DQ can be read from the lead-out area A2D while keeping the rotation speed of the spindle motor 15 unchanged.

(4) Recording Processing Procedure Next, the CP in the recording mode of the optical disc apparatus 1
A series of processing procedures of U19 will be described.

In this optical disk device, the CPU 19
FIG. 8 shows that the optical disc 3 is loaded by the user.
The recording processing procedure RT shown in (1) starts from step SP0 and continues to step SP1 where the optical pickup 1 is controlled via the servo control unit 12 and the biaxial actuator driver 18.
The position of the first beam spot is moved into the lead-in area A2C.

Then, the CPU 19 proceeds to the next step SP2.
In such a manner that the linear velocity of the optical disc 3 becomes constant,
A light beam is emitted from the optical pickup 11 to the lead-in area A2C while controlling the spindle motor 15 via the servo controller 12 and the spindle driver 14 sequentially.

Then, the CPU 19 sets the lead-in area A
Based on the reflected light from 2C, the loaded optical disc 3
(For example, whether the disc is CD-R or CD-RW, the disc diameter is 8 [cm] or 12 [cm]), the lead-in area recorded on the recording surface 3A. The determination is made based on the recorded contents of the subcode Q data DQ of A2C.

Subsequently, the CPU 19 proceeds to step SP3. If it is determined in step SP2 that the optical disc 3 is not a recordable disc, the CPU 19 proceeds to step SP14 and ends the recording process.

On the other hand, when the CPU 19 determines in step 3 that the optical disk 3 is a recordable disk in step SP2,
, And when a positive result is obtained, the process proceeds to step SP5, and it is determined whether or not the given command is a command for executing a recording operation (ie, a write command).

When a negative result is obtained in step SP5, this means that the given command is another command other than the write command. At this time, the CPU 19 proceeds to step SP6, and After executing the command, the process returns to step SP4 again and waits for a command from the host computer 2.

On the other hand, when an affirmative result is obtained in step SP5, this means that the given command is a write command.
U19 proceeds to step SP7 to determine whether or not the optical disc 3 is a special type optical disc based on the arrangement order of the absolute time information corresponding to the lead-in area A2C of the recording surface 3A of the loaded optical disc 3. I do.

If an affirmative result is obtained in step SP7, this indicates that the loaded optical disk 3 is a special type optical disk.
9 proceeds to step SP8, where the beam of the optical pickup 11 is transmitted via the servo control unit 12 and the biaxial actuator driver 18 while maintaining the rotation speed of the spindle motor 15 via the servo control unit 12 and the spindle driver 14 sequentially. Set the spot position to the lead-out area A
Move into 2D.

Then, the CPU 19 proceeds to step SP9, and reads the recorded content of the absolute time information corresponding to the lead-out area A2D of the recording surface 3A of the optical disc 3 while maintaining the rotation speed of the spindle motor 15, whereby After setting parameters such as the light beam power according to the high-speed recording speed, the process proceeds to step SP10.

At this step SP10, the CPU 1
Reference numeral 9 denotes a servo control unit that moves the beam spot position of the optical pickup 11 into the lead-out area A2D via the servo control unit 12 and the biaxial actuator driver 18 so that the linear velocity of the optical disc 3 becomes constant. A spindle motor 15 is controlled via a spindle driver 12 and a spindle driver 14 in sequence.

Then, the CPU 19 determines whether or not the above-described power calibration has been completed for the optical disc 3 in the lead-out area A2D.
On the other hand, when a negative result is obtained, the process proceeds to step SP11 and proceeds to step SP2 or SP
After performing power calibration with the light beam having the power set in step 9, the process proceeds to step SP12.

In this step SP12, the CPU 1
Reference numeral 9 denotes a state in which the beam spot position of the optical pickup 11 is moved into the program area A1 via the servo control unit 12 and the biaxial actuator driver 18 so that the linear velocity of the optical disc 3 becomes constant. The user data D3 is recorded in A1.

Then, the CPU 19 proceeds to step SP13, waits for the end of the recording operation of the user data D3, and then proceeds to step SP14 to end the recording process.

(5) Operation and Effect of the Present Embodiment In the above configuration, the optical disc device 1
When the optical disc 3 is loaded into the optical disc apparatus 1 and the loaded optical disc 3 is recordable, when a recording command is received from a user, the beam spot position of the optical pickup 11 is set in the lead-in area A2C. Move to

Then, the CPU 19 determines the type of the optical disk based on the recorded contents of the subcode Q data DQ in the lead-in area A2C of the recording surface 3A of the optical disk 3. At this time, the CPU 19 controls the recording surface 3A of the optical disc 3
It is determined whether or not the optical disk 3 is a special type optical disk based on the arrangement order of the absolute time information corresponding to the lead-in area A2C.

Here, when the CPU 19 determines that the optical disk 3 is a special type optical disk, the CPU 19 keeps the rotation speed of the spindle motor 15 while maintaining the rotation speed of the spindle motor 15.
Is moved from the lead-in area A2C to the lead-out area A2D.

Then, the CPU 19 calculates the subcode Q data DQ in the lead-out area A2D according to the recorded contents.
The light beam power and the like in the power calibration according to the recording speed and the material of the recording surface 3A are set.

As described above, in the optical disk device 1, the CPU
19, when the loaded optical disk 3 is a special type optical disk, the subcode Q data DQ can be read from the lead-out area A2D while maintaining the rotation speed of the spindle motor 15 without changing.
The rotation control of the spindle motor 15 becomes easy, and
It is possible to speed up reading of necessary information from the lead-out area A2D.

In the above-described configuration, in the optical disk device 1, when the loaded optical disk 3 is a special type optical disk, the subcode is read from the lead-out area A2D while maintaining the rotation speed of the spindle motor 15 unchanged. Since the Q data DQ can be read, the rotation control of the spindle motor 15 can be easily performed, and required information can be read from the lead-out area A2D at a high speed. Thus, a recording apparatus that can improve usability can be realized. .

(6) Other Embodiments As described above, in the present embodiment, the present invention
The case where the present invention is applied to the optical disk device 1 corresponding to the D-RW has been described. However, the present invention is not limited to this. Optical disks and MO (Magn
The present invention can be widely applied to various recording apparatuses other than those corresponding to various disc-shaped recording media such as magneto-optical discs such as eto Optical Disc discs.

In the above embodiment, the case where the first area is applied to the lead-in area A2C and the second area is applied to the lead-out area A2D has been described. The present invention is not limited thereto, and the first area and the second area may be any areas on the recording surface 3A of the optical disc 3 that are separated from each other.

Further, in the above-described embodiment, the case where the optical disc apparatus 1 is applied to a recording and / or reproducing apparatus of a constant linear velocity system in the following description has been described. 15 may be applied to a recording and / or reproducing apparatus of a constant angular velocity system in which the rotation speed is always constant.

Further, in the above embodiment, the CP
U19 is a case where the subcode Q data DQ is read from the lead-out area A2D while the rotation speed of the spindle motor 15 is maintained without being changed only when the discriminated optical disc 3 is a special type optical disc. As described above, the present invention is not limited to this. For example, the present invention may be applied to an optical disc 3 that does not include information for determining whether it is a normal optical disc or a special optical disc in the lead-in area A2C. Can be applied. In such a case, after reading the subcode Q data DQ (necessary information) from the lead-in area A2C, the CPU 19 reads the beam spot position of the optical pickup 11 while keeping the rotation speed of the spindle motor 15 unchanged. The area is moved from the area A2C to the lead-out area A2D. Here, the CPU 19 irradiates the readout area A2D with a light beam while the rotation speed of the spindle motor 15 is still maintained. Here the CPU 19
However, when the necessary information is detected from the lead-out area A2D, the optical disc 3 is determined to be the special type optical disc 3, and when the necessary information is not detected from the lead-out area A2D, the optical disc 3 is the normal type optical disc 3. Is determined.

Further, in the above-described embodiment, the case where the optical pickup 11 is applied to the reproducing means has been described. However, the present invention is not limited to this. For example, the RF amplifier 10 and the optical pickup 11 may be integrated. May be provided.

Further, in the above-described embodiment, a case has been described in which the spindle motor 15, the spindle driver 14, and the servo control unit 12 are applied to the rotary driving means. However, the present invention is not limited to this, and for example, A spindle driver 14 may be provided in the control unit 12.

Further, in the above embodiment, the third
Has been described as being applied to the power calibration area A2A, but the present invention is not limited to this, and the third area may be applied to the program area A1. In such a case, the CPU 19 starts the recording process of the recording data D1 without performing the power calibration.

[0093]

As described above, according to the present invention, in the recording and / or reproducing apparatus, the control means reads the necessary information continuously from the first and second areas of the disk-shaped recording medium. After the necessary information is reproduced from the first area by the reproducing means and the reproducing means is moved from the first area to the second area, the rotation driving means maintains the rotating state of the disk-shaped recording medium at the time of the movement. By causing the reproducing means to reproduce the necessary information from the second area while keeping the same, the rotating state of the disc-shaped recording medium is not changed when the reproducing means reproduces the necessary information from the second area. In addition, the control of the rotation of the rotation driving means is facilitated, the required information can be read from the second area at a high speed, and a recording and reproducing apparatus which can improve the usability can be realized.

According to the present invention, in the recording and / or reproducing method, when necessary information is continuously read from the first and second areas of the disk-shaped recording medium, the necessary information is reproduced from the first area. A first step of moving the area to be reproduced from the first area to the second area, and a second area while maintaining the rotating state of the disk-shaped recording medium during the movement. The required information from the third
Is provided, the rotation state of the disk-shaped recording medium is not changed when the necessary information is reproduced from the second area in the third step. And the second
It is possible to speed up the reading of necessary information from the area, and thus to realize a recording and reproducing method that can improve usability.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an optical disc device according to the present embodiment.

FIG. 2 is a schematic diagram for explaining each area on a recording surface of an optical disc.

FIG. 3 is a schematic diagram for explaining the configuration of one block.

FIG. 4 is a schematic diagram used to explain the configuration of one frame.

FIG. 5 is a conceptual diagram serving to explain the contents of subcode Q data.

FIG. 6 is a schematic diagram for explaining the contents of a normal type determination order.

FIG. 7 is a schematic diagram for explaining the contents of a special type determination order.

FIG. 8 is a flowchart for explaining a recording processing procedure;

[Explanation of symbols]

1 ... optical disk device, 2 ... host computer, 3
... optical disk, 3A ... recording surface, 11 ... optical pickup, 19 ... CPU, D3 ... user data (read data), DQ ... subcode Q data, A1 ... program area, A2 ... ATIP TIME INFORMATION, A2
A: Power calibration area (PCA), A
2B: Program memory area (PMA), A2C:
... Lead-in area, A2D ... Lead-out area.

Claims (8)

[Claims] 1. A disc-shaped recording medium having first and second areas separated from each other and at least information necessary for recording and / or reproducing recording data recorded in at least the first area. In a recording and / or reproducing apparatus for recording and / or reproducing the recording data, a reproducing unit for reproducing the necessary information, a rotational driving unit for driving the disk-shaped recording medium to rotate, and controlling the reproducing unit and the rotational driving unit And the control means, when the necessary information is continuously reproduced from the first and second areas of the disc-shaped recording medium, from the first area to the reproduction means. After the necessary information is reproduced and the reproducing means is moved from the first area to the second area, the rotation of the disk-shaped recording medium during the movement is transmitted to the rotation driving means. While keeping lifting, recording and or reproducing apparatus, characterized in that for reproducing the necessary information from the second area to said reproducing means. 2. The control device according to claim 1, wherein the control unit controls the rotation driving unit so that an angular velocity of the disc-shaped recording medium is constant when the reproducing unit is moved from the first area to the second area. 2. The recording and / or reproducing apparatus according to claim 1, wherein the disk-shaped recording medium is driven to rotate. 3. The control means according to claim 1, wherein said rotation driving means causes said reproducing means to reproduce said required information from said first area so that a linear velocity of said disc-shaped recording medium is constant. When the disk-shaped recording medium is driven to rotate and the reproducing means is moved from the first area to the second area, the angular velocity of the disk-shaped recording medium at the end of the reproduction in the first area is changed. The recording and / or reproducing apparatus according to claim 2, wherein the recording and / or reproducing apparatus is maintained. 4. The disc-shaped recording medium has a third area provided separately from the first and second areas, and the reproducing means has a recording means for performing a predetermined recording process according to the necessary information. Wherein the control means moves the recording means from the second area to the third area while maintaining the angular velocity of the disc-shaped recording medium at the end of reproduction in the second area, 3. The recording and / or reproducing apparatus according to claim 2, wherein a predetermined recording process is performed. 5. A disc-shaped recording medium having first and second areas separated from each other and at least information necessary for recording and / or reproducing recording data recorded in at least the first area. In the recording and / or reproducing method for recording and / or reproducing recorded data, in the case where the necessary information is continuously reproduced from the first and second areas of the disc-shaped recording medium, A first step of reproducing necessary information; a second step of moving from the first area to the second area; and a step of moving the disc-shaped recording medium while maintaining the rotation state of the disc-shaped recording medium during the movement. And a third step of reproducing the necessary information from a second area. 6. The recording and / or reproducing method according to claim 5, wherein in the second step, the rotating state of the disk-shaped recording medium in the first area is maintained. 7. In the first step, the disk-shaped recording medium is rotationally driven so that the linear velocity of the disk-shaped recording medium becomes constant, and the reproduction in the first step is performed in the second step. 7. The angular velocity of the disk-shaped recording medium at the end of the recording is maintained.
Recording and / or reproducing method according to the above. 8. The disc-shaped recording medium is provided separately from the first and second areas from the second area while maintaining the angular velocity of the disc-shaped recording medium at the end of reproduction in the second area. 7. The recording and / or reproducing method according to claim 6, further comprising a fourth step of moving to the third area and performing a predetermined recording process according to the necessary information.