KR19990000722A - Compatible and Lead / Write DVD-ROM Architecture - Google Patents

Abstract

The present invention relates to a writable disc structure compatible with DVDP (Digital Vidoo Disc Player) or ROM, wherein one layer (A layer) can read and write a disc having two layers on one side, and the other layer. (B layer) has an effect of maintaining compatibility and storage capacity by allowing only read-only to focus on two layers of the disc so that information can be written to another layer based on the read-only layer.

Description

Compatible and Lead / Write DVD-ROM Architecture

The present invention relates to a writable disc structure compatible with a DVDP (Digital Video Disc Player) or a ROM. One layer (A layer) can read and write a disc having two layers on one side, and the other layer. (B Layer) allows reading only so that data can be read later on the DVD-ROM device.

The structure of a disc of the conventional read-only structure consists of a protective layer 1 for protecting information in the disc, a recording layer 2 for storing data, and a reflective layer 3 for reflecting light of the recording layer.

In the conventional structure as described above, the input beam passes through the protective layer 1 to read data stored in the recording layer 2, and the transmitted light is reflected from the reflective layer 3 to read data from the DVD-ROM device. You can do it.

However, conventional DVD-ROM discs cannot be written to as read-only.

In addition, there is a problem that it is not compatible with other types of optical discs or discs recorded with a recording device and thus cannot be read or can record only a small amount of information that is significantly smaller than the DVD standard.

An object of the present invention is to solve the above-mentioned conventional problems. In particular, one layer (A layer) is capable of reading and writing a disk having two layers on one side, and the other layer (B layer). Is to provide a compatible and read / writeable DVD-ROM structure that is read-only.

In order to achieve the above object, the present invention compatible and read / write DVD-ROM structure, and a protective film for protecting the layer A and B that stores information; Pits for recording read-only data; A layer for reflecting light of the pit, the semi-reflective layer being capable of reading an inner write recording layer; A separation layer separating the pit from the write recording layer; A write recording layer for recording information by using the property of changing the state of transmitted light; And a total reflection layer for reflecting light of the write recording layer.

The present invention-compatible and read / write DVD-ROM structure has the effect of being able to read a written disc in an existing DVD-ROM device and maintain compatibility with the existing device while being compatible with the existing DVD-ROM device.

1 is a cross-sectional structural view showing a conventional general read-only disk,

2 is a cross-sectional structural view showing a compatible and read / write capable DVD-ROM structure according to an embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1: protective layer 2: recording layer

3: reflective layer 4: feet

5: semi-reflective layer 6: separation layer

7 writing layer 8 total reflection layer

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment according to the technical concept of the present invention compatible and read / write DVD-ROM structure in detail as follows.

EXAMPLE

First, as shown in FIG. 2, the protective film 1 for protecting layer A and B which stores information, and the pit 4 which can record read-only data are connected, and the said pit 4 And a layer for reflecting light of the pit 4, connected to the semi-reflective layer 5 capable of reading the inner write recording layer 7, and connected to the pit 4 and the write recording layer 7. The separating layer 6 and the separating layer 6 are connected to the writing recording layer 7 for recording information by using the property of changing the state of transmitted light, and the writing recording layer 7 is the writing recording layer 7. This embodiment is constituted by connecting with the total reflection layer 8 for reflecting the light.

Hereinafter, the operation of the present embodiment will be described.

When the beam passes through the protective layer 1 to protect the A and B layers containing information, it reads the data from the pit 4, which can write read-only data, and reflects the light from the pit 4 Half-permeable to read and write the inner write recording layer (7), and separate the pit (4) and the write recording layer (7) by using the characteristic that the state of the light transmitted through the write recording layer (7) The data is written and totally reflected by the light passing through the write recording layer 7 so that the data can be read by the DVD-ROM device.

As described above, the present invention-compatible and read / write DVD-ROM structure, in particular, can write a disc to be read from an existing DVD-ROM device. There is.

Claims (1)

A protective film for protecting layer A and layer B containing information; A pit capable of recording read-only data; A layer for reflecting light of the pit, the anti-reflective layer adapted to read the inner write recording layer; A separation layer separating the pit and the write recording layer; A write recording layer for recording information by using the property of changing the state of transmitted light; Compatible and read / writeable DVD-ROM structure with a total reflection layer arranged in order to reflect light from the write recording layer.