KR20000037717A - Method for producing cd-rom of dvd format - Google Patents

Abstract

PURPOSE: A production method of CD-ROM(compact disc read only memory) with a DVD(digital versatile disc) format is provided to produce a cheap DVD title using an existing production device of CD-ROM by writing a title for demonstration or the DVD format of short recorded time in an existing CD-ROM. CONSTITUTION: A certain image needed to record is converted to an MPEG-2 file by encoding. A composition of menu of a connecting and a selecting function between programs are processed for producing a data of MPEG-2 to a real DVD format. A data of UDF(Universal Disk Format) file system is recorded in a CD-ROM after converting a source data to a system of UDF file. A production process of DVD processes the data by adding the composition of menu, the connecting and the selecting functions of programs for making the data, which is the image data converted to the MPEG-2 file, to the real DVD. The UDF is a disc format applied to the DVD as a reference. A converting step of UDF format is a program developed to apply the UDF file of DVD into an ISO-9660 file used to an existing CD-ROM and is used a program used to use the existing CD-ROM disc.

Description

Method for writing D.V.D format onto CD-ROM

The present invention relates to a method of recording and storing image data in a digital versatile disc format on a compact disc read only memory (CD-ROM) medium.

In general, digital recording media have also been developed for the reproduction and storage of images along with the development of digital imaging technology. Among them, CDROM is a generalized digital image recording media. The first product was developed by Philips and Sony separately, and in 1983, when both companies agreed to the Red Book specification, CD-DA (CD-digital Audio), which recorded audio data for the first time, appeared as a music storage medium.

To record general computer data in addition to such audio data, experts gathered at the High Sierra Hotel in California, USA, in 1985 to define the standard for the CD-ROM (the Yellow Book standard). Adopted as a standard, it has been used as a medium for storing data in a variety of formats that can be used as a digital data.

The structure of a general CD is a storage medium that contains digital, and is composed of pits recessed into the surface and lands, which are flat portions, and are densely located from the center of the CD in a spiral form. Pits are the same width and depth, but the length and spacing between each pit are different depending on the data, recording about 20,000 spiral circles containing these pits and lands in a single CD.

When the laser beam of a CD-ROM driver or CD player shines along the spiral circle of the CD, the pit portion diffuses the laser beam and the land portion reflects the laser beam. The photodiode provided in the laser beam According to the reflected laser beam, the electric signal flows differently depending on the part that is reflected back and the part that is not reflected back. The digital signal is restored to original data or music signal.

However, the CD used as the digital recording medium can record only 74 minutes of digital image data, and thus it is not possible to produce one movie for two hours. In short, a new alternative, a digital versatile disc, was developed.

The physical specifications of these CD-ROMs and DVDs are shown in Table 1 below.

division Play time Storage Resolution Manufacturing cost CD 74 minutes 650 Mbyte 352X240 600 won DVD 144 minutes 4.7Gbyte 720x480 4000 won

As can be seen from the above table, DVD can record and play high-definition video for 133 minutes and has the advantage of being a high-capacity storage medium that is 7.2 times larger than CD capacity, but the manufacturing cost of DVD is about 7 to the manufacturing cost of CD. Due to its high cost, the DVD storage media is not generalized compared to the cheap CD.

Moreover, the lack of generalization of these DVDs requires a significant investment in DVD manufacturing facilities, so that the world has facilities for manufacturing DVDs only in very limited countries such as the United States, Japan and Taiwan. have.

Therefore, in Korea, in order to manufacture DVD titles, it is still a barrier to the activation of the domestic DVD market because it is necessary to make a master tape and pay foreign currency to a country equipped with the above DVD manufacturing facilities.

Accordingly, the present invention has been made to solve the above problems, by recording a demo title or a short recording time DVD format on an existing CD ROM, using a conventional CD ROM manufacturing apparatus to produce a DVD title of low production cost An object of the present invention is to provide a CD-ROM manufacturing method of a DVD format.

CD-ROM manufacturing method of the DVD format of the present invention for achieving the above object,

A coding step of encoding a predetermined video material to be recorded into an MPEG-2 file, and connecting and selecting a menu structure and a program to produce the MPEG-2 format data obtained in the incubation step into a real DVD format. A DVD authoring step for processing functions, a format conversion step for converting the source data obtained in the DVD authoring step into a UDF file system, and a CD in which data of the UDF file system converted in the format conversion step is recorded on a CD-ROM. It is characterized by consisting of a recording step.

According to the manufacturing method of the present invention having the above-described configuration, by using the existing CD ROM manufacturing apparatus for producing high-quality DVD with short playback time by producing the title of the DVD format and short time image data in the CD ROM medium Digital data can be recorded on CD-ROM media that can be used in DVD playback devices without the use of expensive DVD production equipment.

1 is a block diagram showing a manufacturing method of a typical D. V. D,

Figure 2 is a block diagram showing a CD-ROM manufacturing method of the DVD format according to the present invention.

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

Fig. 1 is a block diagram showing a conventional DVD title manufacturing method, which encodes a predetermined video object to be recorded and converts it into an MPEG-2 file, and the MPEG-2 format data obtained in the incubation step. In order to produce the actual DVD format, it consists of a DVD operation step of processing menu configuration, program connection, selection function, etc., and a DVD recording step of recording source data obtained in the DVD operation step on a DVD storage medium. have.

At this time, the DVD recording step is roughly divided into two types.

First, it consists of a premastering step of producing a master product of the source data obtained in the DVD authoring step, and a DVD pressing step of producing a large amount of DVD discs by pressing a master product produced in this premastering step.

Secondly, the DVD-R disc is manufactured by using the DVD-R recording device directly from the source data obtained in the DVD authoring step. The DVD-R recording device used here uses a device developed by Pioneer worldwide. have.

Therefore, according to this method, each store must be produced by using a DVD-R recording apparatus, and thus a lot of time and effort is required to manufacture dozens of DVD discs, so it can be practically applied only to a small amount of production.

This conventional DVD manufacturing method requires a high level of technology and expensive production facilities because the physical characteristics required for a DVD disc, that is, the wavelength of the laser and the track interval of the disc are only about 1/2 of that of a conventional CD disc. As a result, the production cost of the DVD title is increased, which hinders the generalization of the DVD.

Therefore, the present inventors lower the manufacturing cost by using the existing CD-ROM disk manufacturing apparatus as it is by recording a high-definition image data having a reproduction time of about 20-30 minutes onto an existing CD-ROM disk.

FIG. 2 is a block diagram showing a manufacturing process according to the present invention, in which an encoding step of encoding a predetermined video object to be recorded into an MPEG-2 file, and data of an MPEG-2 format obtained in the incubation step A DVD authoring step of processing a menu configuration, a program connection, and a selection function to produce a DVD format of the DVD format; a format conversion step of converting source data obtained in the DVD authoring step into a UDF file system; and the format conversion step It consists of a CD recording step that records the data of the converted UDF file system on a CD-ROM.

The DVD authoring step is a step of processing the data by adding a menu structure, program linking, selection function, etc. to make an actual DVD of data obtained by converting video data into an MPEG-2 file.

In addition, UDF (universal disk format) is a disk format applied to DVD as a standard, and the UDF format conversion step is a program developed to apply a UDF file system of a DVD to an ISO-9660 file system used for an existing CD-ROM. The program used to use an existing CD-RW disc can be used.

At this time, as a commercially available program, Toast (trade name), which is a CD-R recording program manufactured by Adaptec (Adaptec, Ltd.), can be used. PX-R412C from Plexter, CRW-4620TX from Yamaha, CDR-4120 from TRAXDATA, etc. can be used.

Of course, the above program or recording apparatus is shown as an example, and other UDF format programs or CD-R recording apparatuses may be used.

As described above, the present invention enables recording of a DVD title on a CD-ROM medium, thereby making it possible to easily produce a demo title or a short recording time image at a low manufacturing cost, thereby enabling activation of the DVD image. It works.

Claims (1)

A coding step of encoding a predetermined video material to be recorded into an MPEG-2 file, and connecting and selecting a menu structure and a program to produce the MPEG-2 format data obtained in the incubation step into a real DVD format. A DVD authoring step for processing functions, a format conversion step for converting the source data obtained in the DVD authoring step into a UDF file system, and a CD in which data of the UDF file system converted in the format conversion step is recorded on a CD-ROM. CD-ROM manufacturing method of DVD format, characterized in that the recording step