KR100271128B1 - Optical recording and reproducing device - Google Patents

Abstract

PURPOSE: An optical recording player is provided to control laser diodes of a CD-R(CD Recordable) system and a DVD(Digital Versatile Disc) system, according to optical disk kinds and reading/playing states, so as to perform recording/playing operations relating to entire disk media. CONSTITUTION: An optical pickup device(106) installs laser diodes generating optical beams of different wavelengths according to optical disc kinds, and records information in an optical disc to play the information. A signal processor processes play signals from the optical pickup device(106) according to the disc kinds. A decoding device decodes output signals of the signal processor according to the disc kinds. An encoding device encodes the information according to the disc kinds. A recording pulse generator(142) generates a recording pulse according to the information. A laser diode driving device selectively drives the laser diodes according to the disc kinds and recording/playing modes, and controls strengths of the optical beams. The laser diode driving device controls optical beams generated in a light source according to the recording pulse in a recording mode process. A servo device(112) performs a servo. A servo controlling device controls the servo device(112). A microcomputer(150) controls the decoding device, the encoding device, the recording pulse generator(142), and the laser diode driving device, according to the disc kinds and the modes.

Description

Optical recorder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical recording / reproducing apparatus, and in particular, to all types of media including compact disc (hereinafter referred to as CD) media as well as digital versatile disc (hereinafter referred to as DVD) media. An optical recording and reproducing apparatus capable of performing a recording and reproducing operation with respect to disc media.

Recently, the market desire for CD-R (CD Recordable) drives, which have begun to stabilize in many aspects of optical record players, is rapidly increasing. This is due to falling prices for CD-R drives, falling prices for media, and users' desire for recorders. As a result, CD-RW (CD Rewritable) media that can be rewritable has been developed, and CD-RW drives have been developed and are ready for release. On the other hand, the DVD system included in the new technology of high-speed, high-density recording is in the process of enacting SPEC, and considering the cost and stability aspects, the CD-based optical recorder will be mainstream for the time being. In addition, in accordance with the development of DVD-P (DVD Player) and DVD Read Only Memory (DVD-ROM), SPECs related to optical recording of DVD-RAM (DVD Random Access Memory) and DVD-R (DVD Recordable) are in progress. .

As above, optical recorders / reproducers can be broadly classified into two classes. In other words, the optical recorder is a CD-based optical recorder / player such as a CD-R and a CD-RW drive which records / reproduces using a laser wavelength of 780 nm, and a relatively short wavelength laser of about 650 nm. And DVD-based optical recorders / players such as DVD-RAM and DVD-R drives for reproduction. As described above, the main reason for separately configuring a commercially available CD-based optical recorder / player and a DVD-based optical recorder / player which are being developed is that the wavelengths of laser light used for recording / reproducing are different. Accordingly, there is a great difference in the configuration of the pickup optical unit for optical recording / reproducing of the CD system and the DVD system, the process of decoding the signal reproduced from the disk, and the configuration of the coding processor for generating the recording waveform during recording. . Therefore, the conventional CD-based optical recorder / player cannot not play or record a DVD system, and it is difficult to read CD-R media even in a DVD-based recorder or player currently under development, and cannot record a CD-based recording media. I have a problem.

1 shows a block diagram of a conventional CR-based optical recorder / player, in which a CD-based optical recorder / player typically records and reproduces information from the optical disk 2 rotated by the spindle motor 4. The pickup section 6 includes an RF amplifier section 8 and a servo processor 10 connected to the optical pickup section 6. When information is reproduced in the CD-based optical recorder / player shown in FIG. 1, the optical pickup section 6 reads out a playback signal from the optical disk 2 rotated by the spindle motor 4, thereby providing an RF amplification section ( 8) and the servo processor 10. The RF amplifying section 8 properly amplifies the playback signal read out from the optical pickup section 6, and the servo processor 10 generates a servo control signal from the playback signal from the optical pickup section 6, thereby generating the optical pickup. The pick-up servo 12 connected to the unit 6 is applied. The pickup servo 12 receives servo control signals generated by the servo processor 10, that is, tracking, slad, focusing, and APC (Automatic Power Control) signals to perform servo.

In addition, the CD-based optical recorder of FIG. 1 has a CD decoder 14 and a CD-ROM decoder 20 serially connected to the RF amplifier 8, and these CD decoders 14 and CD-ROM decoders 20. FIG. The microcomputer 26 connected to is provided. The CD decoder 14 performs decoding and error correction on the reproduction signal amplified by the RF amplifier 8, and outputs audio information through the audio processor 16 connected to the CD decoder 14 for audio information. Export The spindle motor driver 18 connected to the CD decoder 14 receives the spindle motor drive signal from the CD decoder 14 to drive the spindle motor 4. The CD-ROM decoder 20 performs error correction and decoding processing on information other than the audio information transmitted from the CD decoder 14 again. The data decoded by the CD-ROM decoder 20 is transmitted to a host (hereinafter referred to as a PC 24) through an interface processor 22 connected to the CD-ROM decoder 20, so that the user may Make information available. At this time, the microcomputer 26 controls the operations of the CD decoder 14 and the CD-ROM decoder 20.

In addition, the CD-based optical recorder / player reproduces the CD-ROM encoder 28, the CD encoder 30, and the recording pulse generator 32 connected in series to the PC 24 via the interface processor 22. Equipped. When information is recorded by the CD-based optical recorder, the CD-ROM encoder 28 is in a form in which the disc requests information input from the PC 24 via the interface processor 22 (ie, in the form of record information). Encoding is performed, and the CD encoder 30 performs the encoding process once again and outputs it to the recording pulse generator 32. At this time, the CD encoder 30 receives the decoded wobble signal from the wobble decoder 34 which decodes the wobble signal by the signal from the optical pickup section 6 and encodes the record information. The recording pulse generator 32 receives the encoded recording information from the CD encoder 30 and generates an appropriate recording pulse to be actually recorded. The CD-ROM encoder 28, the CD encoder 30, the recording pulse generator 32 and the wobble decoder 34 are connected to the microcomputer 26 to perform the above operations under the control of the microcomputer 26.

Finally, the CD-based optical recorder / player has a laser diode (hereinafter referred to as LD) driver 38 connected to the recording pulse generator 32 and an optimum power control unit 36 connected to the LD driver 38. It is further provided. The optimum power control unit 36 receives the signal fed back from the optical pickup unit 6 and information about the disc from the microcomputer 26 to set the laser power level for optimal recording of the LD driver 38. The LD driver 38 receives the laser power level set by the optimum power control unit 36 and the recording pulse generated by the recording pulse generator 32 to drive the LD embedded in the optical pickup unit 6 to drive the optical disc 2. Record the information in). At this time, the servo control signal of the optical pickup 6 which is necessary while performing the recording operation is generated by the servo processor 10 and the wobble decoder 36, which is caused by the feedback signal applied from the optical pickup 6.

In such a conventional CD optical recorder / player, there is a problem in that a DVD system which is a future technology cannot be reproduced or recorded. Specifically, the DVD recorder or player currently under development uses a 650 nm short wavelength laser light, unlike a CD system using a 780 nm laser wavelength. There is a problem that information cannot be recorded on the system media. In other words, DVD-based optical recorders / players, which are being developed in the future, should be subject to compatibility problems with CD-based optical recorders / players based on playing media such as CD-DA, CD-ROM, and CD-RW. do. Nevertheless, compatibility problems with optical recording have not been considered in optical recorders / players such as DVD-RAM and DVD-R drives that are currently in progress.

Accordingly, it is an object of the present invention to provide an optical recording / reproducing apparatus capable of recording / reproducing not only CD-based media but also optical disc media including DVD-based media.

Another object of the present invention is to provide an optical recording and reproducing apparatus which can integrate a CD system and a DVD system optical recorder using a CD-DVD combined optical pickup.

It is still another object of the present invention to provide an optical recording and reproducing apparatus capable of performing optimal recording and reproducing according to the type of optical disc.

Still another object of the present invention is to provide an optical recording and reproducing apparatus capable of ensuring backward and forward compatibility of an optical recording and reproducing system.

1 is a block diagram showing the configuration of a conventional CD optical recording / reproducing apparatus.

2 is a block diagram showing the configuration of an optical recording and reproducing apparatus according to the present invention.

3 is a detailed block diagram of the optical pickup unit shown in FIG.

FIG. 4 is a detailed block diagram of the RF amplifier shown in FIG.

5 is a detailed block diagram of various control signal generators shown in FIG. 2;

6 is a detailed block diagram of the wobble processor shown in FIG.

FIG. 7 is a detailed block diagram of the write pulse generation unit shown in FIG.

FIG. 8 is a detailed block diagram of the optimum power control unit shown in FIG.

9 is a detailed block diagram of the pickup control signal generation unit shown in FIG.

* Explanation of symbols for main parts of the drawings

2,102: optical disk 4,104: spindle motor

6,106: optical pickup 8,108: RF amplifier

10,110: servo processor 12,112: pickup servo

14,118: CD decoder 16,120: audio processor

18,126: spindle motor driver 20,122: CD-ROM decoder

22,128: interface processor 24,130: host (PC)

26,150: Micom 28,134: CD-ROM Encoder

30,136: CD encoder 32,142: recording pulse generator

34: wobble decoder 36,144: optimum power control unit

38,146: LD driver 114: various control signal generator

116: Wobble Processor 124: DVD Data Processor

132: buffer 138: DVD-R encoder

140: DVD-RAM encoder 148: pickup control signal generation unit

In order to achieve the above object, the optical recording and reproducing apparatus according to the present invention comprises: optical pickup means for recording / reproducing information on an optical disc, including laser diodes generating light beams of different wavelengths according to the type of optical disc; Signal processing means for signal processing a reproduction signal from the optical pickup means according to the type of the optical disc; Decoding means for decoding the output signal of the signal processing means according to the type of the optical disc; Encoding means for encoding information according to the type of optical disc; Recording pulse generating means for generating a recording pulse according to the information from the encoding means; The laser diodes are selectively driven according to the type of the optical disc and the recording / reproducing mode, and the intensity of the light beam to be generated in the driven laser diode is controlled. In the recording mode, the laser diodes are controlled according to the recording pulses from the recording pulse generating means. Laser diode driving means for interrupting the generated light beam; Servo means connected to the pickup means for performing servo; Servo control means for controlling the servo means; And a microcomputer for controlling the decoding means, the encoding means, the recording pulse generating means, and the laser diode driving means in accordance with the type of the optical disc and the recording / reproducing mode.

The above and other objects and advantages of the present invention will become apparent from the following detailed description of embodiments of the present invention which will be described later in conjunction with the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 9.

FIG. 2 is a block diagram showing the overall configuration of the optical recording and reproducing apparatus according to the embodiment of the present invention, wherein the optical recording and reproducing apparatus shown in FIG. 2 is connected to the optical disk 102 rotated by the spindle motor 104. FIG. An optical pickup 106 that performs signal access (recording and reading) with respect to the signal, an RF amplifier 108, a servo processor 110, and various control signal generators 112 commonly connected to the optical pickup 106; And a wobble processor 114. The optical recording / reproducing apparatus also includes a microcomputer 150 for controlling the entire system. In reproducing information, the optical pickup 106 reads out a signal from the optical disk 102 which is rotated by the spindle motor 102. At this time, the signal picked up by the optical pickup 106 has the form of a radio frequency (RF) signal. The optical pickup 106 uses the optical system of the 2LD 1 lens system as the optical pickup for both CD and DVD systems.

3 shows in detail the configuration of the optical pickup 106 shown in FIG. The optical pickup 106 of FIG. 3 includes the LD control unit 200 connected to the 2LD optical unit 202, the LD1 and LD2 light receiving units 204 and 206, and the currents connected to all of the LD1 and LD2 light receiving units 204 and 206. A voltage converter 208, and an output signal switching section 210 connected to the current-voltage converter 208. In the optical pickup 106 using two LDs, the LD control unit 200 receives a driving current for driving the LD from the LD driver 144 to be described later and transmits it to the 2LD optical unit 202. The LD control unit 200 receives a recording or reproducing signal and a driving control signal of LD1 or LD2 according to the type of media from the pickup control signal generation unit 148, which will be described later, so that the LD is properly driven. 202 is controlled. The 2LD optical unit 202 is driven in accordance with the control signal of the LD control unit 200, and transmits the optical signal read from the LD to each of the LD1 light receiving unit 204 and LD2 light receiving unit 206. The LD1 light receiving unit 204 and the LD2 light receiving unit 206 receive an optical signal from the 2LD optical unit 202 according to each LD and convert it into an electrical signal. The current voltage converter 208 converts the electrical signals applied from the LD1 and LD2 light receiving units 204 and 206 into voltage levels and outputs them to the output signal switching unit 210. The output signal switching unit 210 outputs a signal from the LD required according to the control signal sent from the pickup control signal generator 148.

The RF amplifier 108 shown in FIG. 2 amplifies the RF signal read by the optical pickup 106 appropriately. For this purpose, the RF amplifier 108 includes an RF amplifier 212 and an equalizer 214 as shown in FIG. The RF amplifier 212 properly amplifies the RF signal from the output signal switching unit 210 of the optical pickup 106, and the equalizer 214 compensates for the characteristics of the RF signal amplified by the RF amplifier 212. The RF signal is output at a constant magnitude (ie, a constant amplitude).

Returning to FIG. 2, the pickup processor 110 generates a servo control signal for tracking, slade, and focus from the RF signal transmitted from the optical pickup 106 to control the pickup servo 112. The various control signal generators 114 receive signals from the optical pickup 106 and tracking and focus signals from the servo processor 110 and generate signals necessary to control the system. To this end, the various control signal generators 114, as shown in FIG. 5, DVD-RAM header detection signal generator 220, wobble presence determination unit 222, pit presence determination unit 224, An impact detection signal generation unit 226 and a disc type determination signal generation unit 228 are provided. The DVD-RAM header detection signal generator 220 detects the header of the DVD-RAM from the RF signal, and the wobble presence / determination unit 222 determines the presence or absence of a wobble signal based on the RF signal, and the pit presence determination unit 224 ) Determines the presence or absence of a recording pit based on the RF signal, and the impact detection signal generator 226 determines whether a stratification is generated based on the tracking and / or focus related signal, and the disc type determination signal generator ( 228 also determines the type of optical disc 2 being accessed based on the tracking and / or focus related signals.

The wobble processor 116 of FIG. 2 demodulates and decodes the wobble signal from the RF signal from the optical pickup 106 and restores the clock signal. To this end, the wobble processor 116 has a configuration as shown in FIG. According to FIG. 6, the wobble processor 116 may use the bandpass filtering (Band) according to the type (CD-R / RW, DVD-RAM, DVD-R) and recording speed of the signal from the optical pickup 106. After performing pass filtering, the wobble information obtained by demodulating and decoding the filtered signal is supplied to the encoder block. In detail, when the RF signal is FM-modulated appropriately for a CD disk, the wobble signal is detected and FM demodulated by the first BPF 230 and the first FM demodulator 234, and the RF signal is a DVD-R system. In the case where it is modulated properly to the disc, the wobble signal is detected and FM demodulated by the second BPF 232 and the second FM demodulator 236. The wobble decoder 238 commonly connected to the first and second FM demodulators 234 and 236 decodes the demodulated wobble signals from the first and second FM demodulators 234 and 236, and decodes the demodulated signal. Supply to CD encoder 136 and DVD-R encoder 138, respectively. When a wobble is performed at a predetermined frequency, such as a DVD-RAM, an appropriate wobble clock is generated through the third BPF 240 and the clock generator 242, and the wobble clock is supplied to the DVD-RAM encoder 140.

The optical recording and reproducing apparatus according to the embodiment of the present invention shown in FIG. 2 includes a CD decoder 118, a CD-ROM decoder 122, and a DVD data processor 124 for decoding an RF signal from the RF amplifier 108. ). The optical recording and reproducing apparatus according to the present invention includes a CD-ROM decoder 122 and a DVD data processor 124 and a spindle motor driver 126 connected to the wobble processor 116. At the time of reproduction, the RF signals output from the RF amplifying unit 108 are respectively transmitted to the required decoder unit and decoded. In detail, in the case of the CD system, the RF signal is error corrected and decoded by the CD decoder 118. In this case, CD-DA (CD Digital Audio) data among the data decoded by the CD decoder 118 is output in audio form through headphones and speakers through the audio processor 120, and decoded by the CD decoder 118. In the case of the ROM data, the error correction and decoding are performed again through the CD-ROM decoder 122. In the case of a DVD system, the RF signal from the RF amplifier 108 is error corrected and decoded by the DVD data processor 124. The information decoded in each of the CD-ROM decoder 122 and the DVD data processor 124 is transferred to a host, i.e., through an interface processor 128 commonly connected to the CD-ROM decoder 122 and the DVD data processor 124. Sent to the PC 130. Allows users to access the information they need At this time, the interface processor 128 uses an ATAPI or SCSI interface protocol. The spindle motor driver receives the spindle control signal from the CD-ROM decoder 122, the DVD data processor 124, and the wobble processor 116 to drive the spindle motor 104.

In addition, the optical recording and reproducing apparatus according to the present invention efficiently manages data by using the buffer 132 connected to the interface processor 128. The optical recording and reproducing apparatus according to the present invention includes a CD-ROM encoder 134 and a CD-DA encoder 136 for encoding recording information transmitted from the PC 130 through the interface processor 128, and a DVD-R encoder ( 138, and a DVD-RAM encoder 140. The control signal necessary for the servo at the time of recording is generated by the pickup control signal generator 148, various control signal generator 114, and the servo processor 110, which will be described later. In particular, the spindle control signal is wobble deconor 116. Is generated from. Information to be recorded by the user is input from the PC 130 through the interface processor 128 and input to the required encoder processor according to the recording medium. In detail, in the case of CD-based information, an error code and ROM encoding are input to the CD-ROM encoder 134, and the error code and encoding are performed again by the CD-DA encoder 136, thereby converting the data into recording data. do. In the case of a DVD-RAM, it is input to the DVD-RAM encoder 140 to include an error correction code for encoding to convert the recorded data, and in the case of a DVD-R, to the recorded data through the DVD-R encoder 138. Is converted.

Furthermore, the optical recording and reproducing apparatus according to the embodiment of the present invention includes a recording pulse generator 142, an LD driver 146, and an optimum power controller 144. The recording pulse generator 142 converts the recording data transmitted from the CD-DA encoder 136, the DVD-R encoder 138, and the DVD-RAM encoder 140 into optimal pulses to be recorded on the actual medium. At this time, the recording pulse generation unit 142 performs the correction according to the recording pulses are different according to the type of the recording medium and the recording conditions are different for the same type of medium. That is, the recording pulse generator 142 receives an input for the recording strategy from the microcomputer 150 and generates an appropriate pulse from the recording data of the encoder block. To this end, the recording pulse generator 142 has a configuration as shown in FIG.

Referring to FIG. 7, the input signal controller 250 included in the recording pulse generator 142 receives a control signal for the type of disc from the microcomputer 150 and switches the input recording data to the corresponding recording pulse generator. do. Generation of recording pulses according to the type of disc, i.e., CD-R recording pulse generation unit 252, CD-RW recording pulse generation unit 254, DVD-R recording pulse generation unit 256, and DVD-RW recording pulse generation Each of the units 258 converts the recording data applied from the input signal control unit 250 into an actual recording pulse, which is output to the LD driver 146 by an appropriate control operation of the output signal control unit 260. This write pulse is also output as a control signal for the write strategy applied to the optimum power control section 144.

The optimum power control unit 144 in FIG. 2 has a detailed configuration as shown in FIG. In FIG. 8, the recording initial power setting unit 270 included in the optimum power control unit 144 includes a feedback signal of the optical pickup 106, that is, a monitoring diode (MD) signal, a pickup temperature feedback signal (Temp), The initial power of the recording is set from the RF signal and applied to the running OPC control unit 272, the LD driver power generation unit 274, and the microcomputer 150. The running OPC control unit 272 receives power from the recording initial power setting unit 270, the feedback signals from the optical pickup 106, and the recording strategy control signal from the recording pulse generator 142. The LD driver power generator 174 is controlled. Therefore, the LD driver power generation unit 274 provides information about the power from the initial recording power setting unit 270, the control signal from the running OPC control unit 272, the type of the disc from the microcomputer 150, and the like. The optimum power control information is input to set the optimal laser power level in the LD driver 146. In addition, the LD driver power generator 274 receives a shock detection signal from the layer detection signal generator 226 of the various control signal generators 114 to protect the existing data when an impact occurs during recording. Quickly switch to Read power.

Returning to FIG. 2 again, the 2LD driver 146 receives the write pulse of the write pulse generator 142 and the signal from the optimum power control unit 144 and generates an appropriate LD drive current to the optical pickup 106. send. The optical pickup 106 drives the LD by the LD driving current from the LD driver 146 to perform recording.

Finally, the optical recording and reproducing apparatus according to the present invention includes a pickup control signal generator 148 to control the recording / reproducing operation of the optical pickup 106. As shown in FIG. 9, the pickup control signal generation unit 148 receives a recording or reproducing command and information on a disc type from the microcomputer 150, generates a pickup control signal, and applies it to the optical pickup 106. . The optical pickup 106 selectively drives two LDs in accordance with a control signal from the pickup control signal generator 148 to perform recording or reproduction. In detail, when recording a CD system in a recording state, the CD-based LD generates a signal for recording while being driven at the reproduction power, and the DVD-based LD performs recording while being driven at a power suitable for recording the CD-based media. do. This is because CD-R is difficult to reproduce due to the wavelength of the DVD system. In other words, the reflectance is so small that increasing the power of the DVD LD with the power required for playback results in the destruction of previously recorded information. Here, specific operations of the two LDs are shown in [Table] shown in FIG. Accordingly, in the optical recording and reproducing apparatus according to the present invention, the CD-based LD can be used as a reproduction-only LD, and the DVD-based LD can be used as a recording LD, thereby making it possible to record with low power during CD-based recording. CD and DVD recording is possible, and CD-R media can be easily played back. In addition, the optical recording / reproducing apparatus according to the embodiment of the present invention connects the audio output from the CD decoder 118 and the DVD system output from the DVD data processor 124 with an external MPEG 160 by an external terminal, It can operate like DVD-P and CD-P alone.

As described above, according to the optical recording and reproducing apparatus according to the present invention, CD- and DVD-based disc media are controlled by controlling the CD-R and DVD-based laser diodes included in the optical pickup according to the type and recording / reproducing state of the optical disc. The recording / playback operation can be performed for all of them. Therefore, it is possible to integrate the optical system of the CD-R system and the DVD system in the future optical recorder, as well as to perform the optimal recording and playback of the CD-R system and the DVD-based disk media according to the type of the optical disk. can do. Furthermore, the optical recording / reproducing apparatus according to the present invention can ensure backward compatibility with the CD system in the CD-R system and forward compatibility with the CD-R system in the DVD system.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (6)

An optical recording and reproducing apparatus for performing recording and reproducing operations on different optical disks, comprising: optical pickup means for recording / reproducing information on the optical disk with laser diodes for generating light beams having different wavelengths according to the type of optical disk; Signal processing means for signal-processing a reproduction signal from said optical pickup means according to the type of said optical disc; Decoding means for decoding the output signal of the signal processing means according to the type of the optical disc; Encoding means for encoding information according to the type of the optical disc; Recording pulse generating means for generating a recording pulse according to the information from the encoding means; Selectively driving the laser diodes according to the type of the optical disc and the recording / reproducing mode, adjusting the intensity of the light beam to be generated in the driven laser diode, and generating a light source according to the recording pulses from the recording pulse generating means in the recording mode. Laser diode driving means for interrupting the light beam generated by the laser beam; Servo means connected to said pickup means for performing servo; Servo control means for controlling the servo means; And a microcomputer for controlling the decoding means, the encoding means, the recording pulse generating means, and the laser diode driving means in accordance with the type of the optical disc and the recording / reproducing mode. 2. The apparatus according to claim 1, further comprising: power control means for controlling a signal to be supplied from said recording pulse generating means to said laser diode driving means so as to make optimum recording during recording; Control signal generation means for generating a system control signal from the output signals of the optical pickup means and the servo means and outputting the system control signal to the microcomputer; And a wobble processor for decoding the wobble signal from the output signal of the pickup means according to the type of the disc and outputting the wobble processor to the encoding means. 3. The apparatus of claim 2, further comprising: a host computer for outputting information to be recorded to said encoding means and receiving reproduction information of said decoding means; And an interface means for interfacing the encoding means, the decoding means and the host computer. The optical recording / reproducing apparatus according to claim 3, further comprising an audio processor for outputting audio information among the decoded data from said decoding means. The optical recording and reproducing apparatus according to claim 3, wherein the interface means efficiently manages data by using a buffer. The optical recording and reproducing apparatus according to claim 2, wherein the wobble processor outputs a spindle control signal to the servo means.

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