JPH04370577A - CD disc recording device - Google Patents

Abstract

PURPOSE:To lighten the burden of a host computer by providing a control means for recording main data to a CD disk by coupling three kinds of the data of the main data and a generated subcode and a generated ECC(error correction code). CONSTITUTION:A subcode generating part 3a to generate the subcode to meet the main data to be recorded in a CD disk, and an ECC generating part 3b to generate the ECC to meet the main data to be recorded are provided. Further, a system controller 3 is provided which inputs table-of-contents(TOC) data from the host computer 2 before the start of main data recording operation, and adds the generated subcode and the generated ECC to the input main data so as to make them into CD-ROM compatible format data. The TOC data is recorded in the read-in area of the CD disk 6, and after that, the main data of the CD-ROM compatible format is recorded in the program area of the CD disk 6 so that the CD disk 6 of the CD-ROM compatible format can be generated.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention relates to a host computer (
host personal computer) and configure the system,
It relates to a CD disk recording device that records input CD-ROM format data on a CD disk to create a CD-ROM. The present invention relates to a CD disc recording device that creates a ROM compatible format CD disc.

0002

[Conventional example] In recent years, CD-ROMs have been proposed that use CD discs as dedicated memory.This CD-ROM is expected to be widely used due to its advantages such as recording a huge amount of data, high-speed reading, and low cost. has been done.

[0003] When creating the above-mentioned CD-ROM, that is, when creating a master disc for a plurality of CD-ROMs, for example, signals such as audio are digitally converted to data in a writable CD format, and this series of data is A host computer (host personal computer) that records on a tape and a series of data from that tape can be directly recorded on a CD.
A system is required that includes a CD disk recording device (CD-ROM writing device) that records information on a disk to create a CD-ROM.

[0004] A series of data recorded on the tape is as follows:
For example, as shown in FIG. 4, since it is necessary to conform to the CD-ROM format, the host computer needs to edit the input data and convert the edited data into the CD-ROM format. . To be more specific, it is necessary to record data that combines three types of subcode, main data, and ECC (error correction code) on the tape, and for the first subcode, TOC ( Table of contents) corresponds to this, and after this, the time etc. corresponding to the main data corresponds to the subcode.

[0005] Therefore, when creating the above-mentioned CD-ROM, the TOC data is first recorded in the lead-in area of the disc, and then the sub-code such as the above-mentioned time, main data such as music, and data combined with ECC are recorded on the disc. recorded on the disc.

[0006] Furthermore, a series of CDs recorded on the above tape
- The ROM format data has been subjected to CIRC error correction. For example, in the case of 8-bit main data, this main data has been converted into a 14-bit pattern.

[0007]

[Problems to be Solved by the Invention] However, the above-mentioned CD disk recording device only has the function of recording CD-ROM format data as is, which places a burden on the host computer. ROM
cannot be easily created, and cannot be used in a variety of ways, despite having features such as recording a huge amount of data, high speed readout, and low cost.

[0008] Furthermore, when creating a music CD disc, for example, various devices are required in addition to the above-mentioned host computer, and if multiple songs are to be recorded, troublesome editing work is required. This will place a burden on

The present invention has been made in view of the above-mentioned problems, and its purpose is to generate subcodes and ECC of CD-ROM format, to reduce the burden on the host computer, and to create a CD-ROM compatible format. To provide a CD disc recording device which allows CD discs to be easily created.

0010

[Means for Solving the Problems] In order to achieve the above object, a CD disk recording device of the present invention provides at least
A subcode generation section that generates a subcode according to the main data to be recorded on the D disk, and an E that generates an ECC (error correction code) according to the main data to be recorded.
Before the main data recording operation, the CC generation unit receives the T from the host computer that constitutes the device and system.
Input OC data or TOC data set in the device, input the main data to be recorded during recording operation, add the subcode and ECC generated above to this input main data, and make it CD-ROM compatible format data. Equipped with a system controller,
The TOC data was recorded in the lead-in area of the CD disc, and then the main data in the CD-ROM compatible format was recorded in the program area of the CD disc, making it possible to create a CD disc in the CD-ROM compatible format. The gist is that.

[0011]

[Operation] With the above structure, before main data is recorded on a CD disc, TOC data (table of contents data) of the data to be recorded is recorded in the lead-in area of the CD disc. Thereafter, the subcode and ECC of the CD-ROM format are generated, and the subcode, ECC, and main data to be recorded are combined to form the CD-ROM format data. As a result, a CD with subcode + main data + ECC recorded
The disc will be a CD-ROM compatible format disc.

[0012] Therefore, the load on the host computer constituting the apparatus and system is reduced, and a CD-ROM format disc can be easily created. Furthermore, a music CD-ROM can be easily created by A/D converting and inputting a signal such as music, and converting the converted data into the main data.

[0013]

Embodiments Hereinafter, embodiments of the present invention will be explained based on FIGS. 1 to 3. In FIG. 1, this CD disk recording device (CD-ROM writing device) has subcode, ECC
, a CIRC encoder section 1 that attaches ECC (error correction code) to main data, etc. and converts it into an error-corrected bit pattern, and a host personal computer (host computer) 2 that constitutes the device and system, and sends and receives control signals. , a system controller (microcomputer) 3 that generates subcodes according to input main data, controls its CIRC encoder unit 1, and controls three types of combinations of subcodes, data, and ECC; and external music. The host personal computer 2 includes an A/D converter 4 that converts signals such as the above into digital data, and a switch 5 that switches between the A/D converted data and data from the host personal computer 2.

For example, as shown in FIG. 2, when creating a CD-ROM, the CD-ROM recording device inputs TOC data from the host personal computer 2 prior to main data, and inputs this input TOC data as shown in FIG. After writing to the lead-in area of the disk 6 shown in FIG. 2, the subcode generation section 3a and the ECC generation section 3b are controlled to generate a subcode and ECC according to the input main data, and also to write the input main data and the generated subcode. Combines three types of code and ECC.

[0015] Also, as in the conventional case, this CD-ROM recording device includes a motor device 7 for rotating the CD disk 6, and a recording head section 8 for recording the bit pattern from the CIRC encoder section 1 onto the CD disk 6. , a servo signal processing section 9 that controls the rotation of the motor device 7 and movement control of the recording head section 8, and a laser light drive section 10 that drives the laser diode of the recording head section 8. The controller 3 controls the servo signal processing section 9 and the laser light driving section 10.

[0016]Although not shown, the CD-ROM writing device is equipped with a key for manually inputting TOC data corresponding to input data and other necessary operation keys.

[0017] Here, it is assumed that main data from the host personal computer 2 is recorded on a CD disc using the CD disc recording device having the above configuration to create a CD-ROM. Note that the switch 5 is switched to the host personal computer 2 side.

Then, before inputting data from the host personal computer 2, the CD disk recording device requests TOC data from the host personal computer 2, imports the TOC data in advance, and then outputs the TOC data to the host personal computer 2. The write operation of the TO
C data will be written to the lead-in area of the CD disc 6.

When writing of the TOC data is completed, a request for main data is made to the host personal computer 2, and subcodes (time data, etc.) and ECC of this main data are generated. Main data from the host personal computer 2 is sequentially received, and this received data is sent to the CIRC encoder section 1.
When the subcode is input to the main data, the generated subcode is added to the main data, and ECC for error correction is added. For example, if the data is 8 bits, the subcode, data, and ECC are each a 14-bit pattern. is converted to the CD format signal format.

In this case, since at least one frame is composed of subcode, data, and ECC, the converted format becomes a CD-ROM compatible format. The data converted in this way is sequentially recorded in the program area of the disk 6, and finally the data is recorded in the program area of the disk 6.
When writing to the lead-out area is completed, writing to the disc 6 is completed.

[0021] As described above, since the CD disc recorded by the CD-ROM recording device has a CD-ROM compatible format, the host computer 2 only needs to output the TOC data and data such as music. There is no need for various editing or CD-ROM format processing, and the burden is reduced accordingly.

[0022] Moreover, it is possible to easily create a CD disc in a CD-ROM compatible format, and it can be used, for example, when creating only one CD-ROM instead of a master disc of a CD-ROM. It can be used in a variety of ways by taking advantage of its features. Furthermore, the switching device 5
By switching the input signal to the A/D converter 4 and inputting a signal such as music, the music or the like can be recorded on the disc 6 in CD-ROM format.

In this case, when TOC data is input using the operation keys of the CD-ROM recording device, this TOC data is input to the CIRC encoder section 1 as a subcode, and this TOC data is recorded in the lead-in area of the disc 6. Ru. At this time, there is no need to inquire about data other than that subcode. That is, only the TOC data is recorded on the disc 6, and other data is ignored.

After the writing of the TOC data is completed, when a signal such as recorded music is input, this signal is converted into digital data by the A/D converter 4, and this digital data is input to the CIRC encoder unit 1. .

[0025] As a result, a subcode and ECC are generated for the music data in the same manner as described above, and the three types of music data, subcode, and ECC are combined,
The data is converted into CD-ROM compatible format data. Then, the CD-ROM compatible format data is recorded on the disc 6, and finally the lead-out of the disc 6 is recorded, and the creation of the music CD is completed.

Furthermore, when creating the CD-ROM, for example, music data for a plurality of songs can be additionally recorded. In this case, the TOC data is temporarily written in an empty area inside the lead-in area of the disc 6, and after the music data for the multiple songs has been written, the previously recorded TOC data is
All you have to do is read the C data and write it in the lead-in area.

In this way, in the CD disk recording device, the subcode and ECC are generated, the generated subcode and ECC are attached to the input data, and the data is written on the CD disk. You can easily create a CD disc, for example, when creating a CD disc in a CD-ROM compatible format, that is, a CD-ROM.
The burden on the host personal computer constituting the system can be reduced, and music CD-ROMs can be easily created by inputting signals such as music.

[0028]

As explained above, according to the present invention, there is provided a CD disk recording device (CD-ROM recording device) that forms a system with a host computer and records data on a CD disk to create a CD-ROM. , CD-RO
A subcode generation means for generating an M format subcode, an ECC generation means for generating the ECC, and a TO
After importing the C data and recording the TOC data in the lead-in area of the CD disc, input the data to be recorded, and write the subcode and ECC data generated above.
Since it is equipped with a control means for combining three types of data and recording it on a CD disc, it is possible to reduce the burden on the host computer when creating a CD disc in a CD-ROM compatible format, and it is possible to can be easily created.

[0029] Furthermore, the above-mentioned CD disc recording device has an A/
If you add a circuit such as a D converter, you can convert music signals etc.
It is possible to record on a CD disc in ROM format, and has the advantage that it is easy to create a music CD-ROM.

[Brief explanation of drawings]

FIG. 1 is a schematic partial block diagram of a CD disk recording device of the present invention.

FIG. 2 is a schematic block diagram of a system of a CD disk recording device and a host personal computer according to the present invention.

[Figure 3] Schematic configuration diagram of a CD disc

[Figure 4] Schematic diagram of CD-ROM format

[Explanation of symbols]

1 CIRC encoder section 2 Host personal computer (host computer) 3 System controller (microcomputer)
3a Subcode generation section 3b ECC generation section 4 A/D conversion section 5 Switcher 6 Disk (CD disk)

Claims (2)

[Claims] 1. Subcode generation means for generating at least a subcode according to main data to be recorded on a disc; ECC generation means for generating an ECC (error correction code) according to the main data to be recorded; Before the data recording operation, input the TOC (Table of Contents) data from the host computer that constitutes the device and the system, or the TOC data set in the device, and during the recording operation, input the main data to be recorded, and input the main data to be recorded. control means for adding the generated subcode and ECC to the data to make it CD-ROM compatible format data; recording the TOC data in the lead-in area of the disc;
A CD disc recording device that records main data in a ROM compatible format and is capable of creating a CD disc in a CD-ROM compatible format. 2. A/D means for converting an input audio signal into digital data, and a switching means for switching between the converted digital data and the main data, the subcode and the ECC being applied to the digital data or the main data. 2. The CD disk recording device according to claim 1, wherein the CD-ROM format data is created by adding the following.