KR19990018926A - Optical playback / recording device - Google Patents

Abstract

The present invention relates to an optical reproducing / recording apparatus, and comprises a DVD drive system using servo controllers for controlling the position of a short wavelength optical head positioned on an optical disc through an actuator while adjusting the rotational speed of the disc motor through a driver. The information read by the short wavelength optical head is transmitted to the system decoder through the signal amplifier, error correction unit, and demodulator while the controller outputs control signals of rotational speed, tracking, and focus to the servo controller. The DVD drive system outputs an audio signal to an external output unit through an audio decoder and a digital / analog converter, while outputting video and text signals through an MPEG decoder and a character decoder, respectively, through an NTSC decoder. Integrate DVD drive The information data to be reproduced by providing the member to one so that the data may be printed in or out.

Description

Optical playback / recorder

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical reproducing / recording apparatus, and more particularly to the function of a DVD player in a DVD driver for reading or recording information recorded on an optical disc such as a DVD-RAM, a DVD-ROM or a CD-ROM operating on a home computer. The present invention relates to an optical reproducing / recording apparatus which adds a and outputs a composite signal of an image and an audio reproduced by a DVD driver to a general TV for viewing through a monitor.

Generally, DVD-RAM (Digatal Video Disc-Random Access Memory), DVD-ROM, and Compact Disc-Read Only Memory (CD-ROM) are removable and installed on a home computer. It is well known that the user can listen to the sound through the speaker while watching the image through the monitor.

The information processed by the conventional optical recording device of a home computer can be viewed on a general monitor using an MPEG card, or a composite signal of images and images can be output to a general TV by using an overlay card inserted into a home computer. By doing so, they could watch.

That is, conventionally, a high-density optical disc 1 such as a DVD-RAM, a DVD-ROM, or a CD-ROM is mounted on a try 2 of the DVD driver A as shown in FIG. To be rotated by the disk motor (3),

The information recorded on the DVD-RAM 1 is read through the short wavelength optical head 4, which is an optical pickup module, and then restored to an original signal in a compressed state while passing through the MPEC card 5. After inputting the signal to the microprocessor 6 of the processor, the video signal is output to the monitor 7 connected to the output terminal so that the image can be viewed and the audio signal can be output to the speaker 8 so that sound can be heard. .

In the case where the microprocessor 6 outputs a composite signal of video and audio to the general TV 10, the microprocessor 6 is output through an overlay card 9.

However, according to the DVD driver of the conventional home computer as described above, some of the optical signals are recorded or reproduced by a device driver or an application program depending on the type of operating system operated by the home computer. The data reproduced and transmitted by the DVD driver A in B) are signaled by an internal decoding unit and then displayed on the monitor 7, and via the separate overlay card 9, the general TV 10 In addition to the inconvenience of having to insert a different type of card into a home computer according to the type of display, the internal structure of the system is complicated and the performance of the microprocessor is degraded. There were disadvantages such as being.

Accordingly, the present invention adds the function of the DVD player to the inside of the DVD driver that reads or records the information recorded on the optical disc on the home computer, and directly outputs the composite signal of the video and audio played by the DVD driver to the general TV. It is an object of the present invention to provide an optical reproducing / recording apparatus that can be viewed through a PC.

In order to achieve the above object, the present invention configures a DVD drive system with servo controllers that control the position of a short wavelength optical head positioned on an optical disk through an actuator while adjusting the rotational speed of the disk motor through a driver.

The information read by the short wavelength optical head is transmitted to a system decoder through a signal amplifier, an error correction unit, and a demodulator,

The controller which receives the signal from the signal amplifier and the demodulator outputs the control signals of the rotational speed, tracking and focus to the servo controller.

Outputs the audio signal to the external output unit through the audio decoder and the digital / analog converter while outputting the video signal and the text signal output from the system decoder to the external output unit through the MPEG decoder and the character decoder, respectively. By integrating the DVD player, information data to be played back can be output internally or externally.

1 is a block diagram showing the structure of a conventional DVD driver.

Figure 2 is a block diagram showing the overall configuration of the present invention.

* Explanation of symbols on the main parts of the drawings

C: DVD driver D: DVD drive system

E: DVD player F: home computer

17: servo controller 21: controller

29 microprocessor

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 shows the overall configuration according to an embodiment of the present invention,

A disk motor 13 for rotating the high density optical disk 11 mounted on the tri 12,

By controlling the rotation speed by controlling the disk motor 13 through the driver 14, the position of the short wavelength optical head 16 located on the optical disk 11 through the actuator 15 is precisely controlled. The DVD drive system D is constituted by the servo controllers 17 which enable reproduction of information,

An error correction unit 19 for correcting an error of the data when the information read from the optical disk 11 through the short wavelength optical head 16, which is an optical pickup module, is transmitted through the signal amplifier 18;

A demodulation unit 20 for demodulating the data inputted after the error is corrected by the error correction unit 19 into an original signal;

The signal amplifying unit 18 and the demodulator 20 receive the focus tracking error signal and the CLV control signal, and output the rotation speed control signal, the tracking control signal, and the focus control signal to the servo controller 17. Controller 21 for controlling the operation of,

A system decoder 22 for receiving a stream signal from the demodulator 20, processing the stream signal, and outputting the video signal, the text signal, and the audio signal;

An NTSC decoder 25 for receiving a video signal through the MPEG decoder 23 and mixing and receiving a text signal through the character decoder 24 and then outputting a video output signal to the external output unit 26;

The DVD player E is composed of audio decoders 27 that receive the audio signal and output the audio output signal to the external output unit 26 through the digital / analog converter 28.

The DVD driver C formed by the DVD drive system D and the DVD player E is controlled by the microprocessor 29 of the home computer F to output data to the inside or the outside.

The optical reproducing / recording apparatus of the present invention configured as described above allows a home computer to receive a signal read from a high-density optical disc such as a DVD-ROM, a DVD-RAM, and a CD-ROM, through a DVD drive system, to be processed by a DVD player, and then transferred to a home computer. Some of the features of the DVD driver are processed to enable a performance-enhanced multimedia environment.

When the user inserts the high density optical disc 11 into the tri 12 and selects the desired information, the control signal is transmitted from the microprocessor 28 of the home computer F to the sub controller 13 of the DVD drive system D. To rotate the disk motor 13 through the driver 14.

At the same time, while moving the short wavelength optical head 16 through the actuator 15, the information recorded on the optical disc 11 is read.

When the user selects the internal output to check the information on the monitor of the home computer F by the user, the microprocessor 28 recognizes the information and receives the signal read from the optical disk 11 directly. After passing through the signal processing, the internal monitor and speaker can be used to view the image and sound.

On the other hand, when the user selects the external output to check the information through an external TV, the controller 21 of the DVD player E of the DVD driver C, which has received the control signal of the microprocessor 28, may be used. Data of the information read by the short-wavelength optical head 16 from the optical disc 11 is amplified by the signal amplifying unit 18 for a while, and then transferred to the error correcting unit 19 so as to correct an error of the data. Let us demodulate the original signal at.

In the controller 21 receiving the focus tracking error signal and the CLV control signal from the signal amplifier 18 and the demodulator 20, the rotation speed control signal is transmitted to the sub-controller 17 of the DVD drive system D, The tracking control signal and the focus control signal are output to enable accurate reproduction.

Therefore, the data signal from the demodulator 20 reproduced correctly is separated into a video signal, a text signal and an audio signal during signal processing by the system decoder 22, so that the video signal and the text signal are converted into the MPEG decoder 23 and the text decoder. The audio signal is output to the external output unit 26 via the NTSC decoder 25 via the 24, respectively, and through the audio decoder 27 and the digital / analog converter 28, respectively. The audio output signal is output to the external output terminal 26 so that the user can view information through a TV connected to the external output terminal 26.

Therefore, in the optical reproducing / recording apparatus of the present invention, the DVD drive system is composed of servo controllers for controlling the position of the short wavelength optical head positioned on the optical disc through the actuator while adjusting the rotational speed of the disc motor through the driver.

The reproduced information data is transmitted to the system decoder through the signal amplifier, error correction unit, and demodulator, and the controller outputs control signals of rotational speed, tracking, and focus to the servo controller.

The DVD player outputs the audio signal to the external output unit through the audio decoder and the digital / analog converter while outputting the video signal and the text signal output from the system decoder to the external output unit through the MPEG decoder and the character decoder, respectively. By integrally configuring (E), the information data to be reproduced can be outputted internally or externally.

Claims (2)

An optical reproducing / recording apparatus in which a DVD drive system is composed of a disc motor, an actuator, and a servo controller for controlling a short wavelength optical head to record or read information data while being controlled by a microprocessor of a home computer. And a DVD driver in which a DVD player is integrally formed so as to output data to the inside or the outside while being controlled by a microprocessor of a home computer. The DVD player according to claim 1, wherein the DVD player receives the reproduced information of the DVD drive system through a signal amplifier and corrects an error, and a demodulation unit that demodulates the error corrected data into an original signal. And a controller that receives the focus tracking error signal and the CLV control signal from the signal amplifier and the demodulator, and outputs a rotation speed, tracking and focus control signal to the servo controller, and transmits a stream signal from the demodulator. After receiving and processing, the system decoder outputs the video signal, the text signal and the audio signal, and the video signal is transmitted through the MPEG decoder while the video signal is received and mixed, and then the video output signal is output to the external output unit. And an NTSC decoder to receive the audio signal and output the analog audio output signal. Optical reproducing / recording apparatus, characterized by consisting of a decoder for the audio output to the output unit.