JP2003151211A - Device and method for recording digital signal, and recording and reproducing device, and recording and reproducing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize at low costs both of a disk drive capable of DVD-R, DVD-RW, and DVD+RW recording and a disk drive capable of DVD-R, and DVD-RW recording. SOLUTION: Address information is detected from ADIP taking one ECC block period, and decides an address corresponding to the ECC block. An address code to be loaded on LPP is converted according to the decided address. The converted LPP takes one block period before being outputted. These functions are collectively arranged in a single semiconductor device (LSI). An LPP output from an ADIP-LPP conversion means is inputted to an encoder LSI in which a circuit for detecting the address information from LPP and an encode processing circuit for generating and modulating an error correcting code, or the like are in corporated. The encode LSI determines a recording position by a circuit for detecting the address information from LPP, and outputs encoded digital data and writes the data to a medium.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital signal recording / reproducing apparatus for a disc-shaped recording medium, and more particularly to an apparatus for recording / reproducing a plurality of types of disc-shaped recording media having different recording formats.

[0002]

2. Description of the Related Art As a recordable optical disk, a CD-R,
CD-RW, DVD-RAM, DVD-RW, DVD-
R, DVD + RW, etc. are mentioned. Of these, the CD
The structure of -R is described in "All about CD technology (Denpa Newspaper Edition)", 259P-261P. DVD-RAM
The structure of is described in 19P-20P of "DVD-RAM technology (Trikeps version)". The structure of DVD-R is described in 68P-69P of the same book. Also,
For the structure of DVD-RW and DVD + RW, see "DVD
-RAM Revolution (Ohm's Edition) ", Chapters 6 and 7. As described in each literature,
DVD-RAM, DVD-RW, DVD-R, DVD +
The RW has a common recording format such as addition of error correction code, interleaving, and modulation rule.

However, the recording method of the information indicating the position on the medium is different, that is, PID (preformat ID) in DVD-RAM and LPP (land.
Pre-pit), ADIP (address
Position information is recorded by each of the in-pregroove methods. The ADIP method is a method in which the address of each ECC block is distributed and recorded in four locations in the ECC block as address information, and the LPP method uses the address of each ECC block as address information in the ECC block. It is a method that concentrates and records on the part.

Here, a conventional digital signal recording device will be described with reference to FIG. It should be noted that the present digital signal recording device is capable of writing to DVD-R and DVD-RW.

In FIG. 4, reference numeral 101 is a disk-shaped recording medium, 102 is a spindle motor for rotating the disk-shaped recording medium 101, 103 is an optical pickup for writing to and reading from the disk-shaped recording medium 101, and 104.
Is an analog front end for filtering and slicing (binarization processing) an output signal from the optical pickup and outputting a binarized LPP signal 106.

Next, the encoder circuit 119 will be described. 112 is the analog front end 104 to LPP
L for detecting the address signal input as the signal 106
This is a PP detection circuit, and a timing signal according to address detection is sent to a modulation circuit (MODulator) 111. The modulation circuit 111 starts and ends recording according to the timing signal from the LPP detection circuit 112.

From the RAM control 117 to the modulation circuit 1
The data input to 11 is processed in the following procedure. First, data to be recorded (user data) such as image data is input to the input interface 115 from the input terminal 118. Input interface is ATAPI, SC
It is a general-purpose interface such as SI, and receives user data by interfacing with external devices according to a certain protocol. Input interface 115
The user data from is input to the scrambler 114, and scrambled according to the DVD format. The scrambler 114 also adds a data ID and an error detection code. Scrambler 114
The data for which the processing in step 1 has been completed is temporarily stored in the buffer RAM 120 via the RAM control 117. Buffer RA
The data processed by the scrambler 114, which is stored in the M120, is read into the error correction code addition circuit via the RAM control 117, and the error correction code is generated.
The generated error correction code is stored in the buffer RAM 120 via the RAM control 117. After the correction code is generated, the RAM control 117 from the buffer RAM 120 is performed according to the timing signal from the LPP detection circuit 112.
The data is sent to the modulation circuit 111 via the, the modulated data is sent to the pick 103, and writing is performed at a desired position on the recording medium 101. The servo circuit 1
Reference numeral 16 controls the rotation of the disc motor 102 and the position of the pickup 103.

As described above, DVD-R and DVD-RW can be recorded by the conventional digital signal recording device. However, since this digital signal recording apparatus cannot recognize the address of the ADIP system, it cannot perform the recording process on the DVD + RW.

[0009]

Disc drives for writing data to recordable optical discs include CD-R, CD-RW, DVD-RAM, and DVD-R.
Disk drive capable of recording all of RW, DVD-R, DVD + RW, disk drive capable of recording only DVD-R, DVD-RW, DVD + RW, DVD-R
Various variations of disk drives such as a disk drive capable of recording W and DVD-R are conceivable, and it is considered that this variation will be further increased when an optical disk of a new standard appears in the future. In order to realize these disk drives, a circuit that detects information indicating the position on the medium (positional information detection circuit) needs to correspond to the positional information of each system. Note that this circuit is generally formed into an LSI together with a digital processing circuit such as an encoding processing circuit, and the circuit scale is usually about 800,000 gates.

As a method of realizing such various disk drives, a method of providing a plurality of LSIs corresponding to respective position information methods and a method of supporting a plurality of position information methods with one LSI There is a way to do it.

However, in the former case, for example, in order to support two types of position information systems, the circuit scale for 2 LSIs,
That is, a circuit scale of 1.6 million gates is required, which leads to an increase in price due to the increase in the circuit scale. Also,
In the latter, the circuit size does not increase significantly, but the current LSI
Cannot be diverted, so it is necessary to redevelop the LSI. Therefore, it becomes difficult to develop a multi-disk drive at an early stage, and considering the development cost, it is disadvantageous in terms of price.

Therefore, it is an object of the present invention to provide a disk drive that can cope with various types of optical disks and new type optical disks at low cost without increasing the circuit scale too much.

[0013]

The above problems include a first recording medium having first address information expressed in a first format and second address information expressed in a second format. A signal recording device capable of recording data with respect to a second recording medium, the first detecting means detecting the address information expressed in the first format, and the signal recording apparatus expressed in the second format. A signal recording device comprising: second detecting means for detecting the written address information; and converting means for converting the first address information expressed in the first format into the expression in the second format. Can be improved.

[0014]

DETAILED DESCRIPTION OF THE INVENTION A digital signal recording apparatus according to a first embodiment of the present invention will be described with reference to FIG. It should be noted that the present digital signal recording apparatus is a DVD-R, a DVD-R.
It enables writing to W and DVD + RW.
1 has an ADIP-LPP conversion circuit 110, and the analog front end 104 is a DVD +.
It differs from FIG. 4 in that the binarized ADIP signal 105 is output during RW recording and the binarized LPP signal 106 is output during DVD-R or DVD-RW recording, and the rest is common, Description of common components will be omitted.

In FIG. 1, 107 is a binarized AD.
IP signal is input and address information is detected A
DIP detection circuit, 108 is an LPP generation circuit for generating LPP from the address information detected by the ADIP detection circuit,
109 is the LPP generation circuit 10 for DVD + RW
DVD-R by selecting the LPP signal generated by
Or for DVD-RW, input 10 from AFE
Switch circuit for selecting 6, 110 for 107, 10
8 and 109 are ADIP-LPP conversion circuits.

Next, the encoder circuit 119 will be described. Reference numeral 112 denotes an LPP detection circuit that detects an address signal input as an LPP signal from the switch circuit 109, and a timing signal according to the address detection is sent to the modulation circuit (MODulator) 111. The modulation circuit 111 is L
Recording is started and ended according to the timing signal from the PP detection circuit 112.

From the RAM control 117 to the modulation circuit 1
The data input to 11 is processed in the same procedure as the procedure described in FIG.

As described above, according to this embodiment, it is possible to record a DVD + RW by switching the switch circuit 109 to the LPP generating circuit 108 side, and to the input signal 106 side from the AFE 104. By switching, recording on DVD-R and DVD-RW becomes possible.

In this embodiment, DVD-R, DVD
Although the description has been given using -RW and DVD + RW, the application of the present invention is not limited to these optical discs.
The present invention may be applied to an apparatus and method for recording data on two types of recording media in which addresses are recorded in different formats. Further, in FIG. 1, the ADIP detection circuit 107
And the LPP generation circuit 108 are ADIP-LPP conversion circuit 1
10 and the LPP detection circuit 112 is described as being included in the encoder circuit 119. However, the present invention is not limited to this, and the ADIP detection circuit 107, L
All of the PP generation circuit 108 and the LPP detection circuit 112 may be included in one integrated circuit. The same applies to the following examples.

Next, the operation timing of the first embodiment will be described with reference to FIGS. Figure 2 shows DVD + RW
Is a timing chart for recording a DVD, FIG.
It is a timing chart when recording R and DVD-RW.

In FIG. 2, 201, 202 and 205 are A
The DIP detection circuit 107 shows the timing to detect the address from the ADIP, 203 and 206 show the timing when the LPP generation circuit 108 encodes (converts) the LPP signal, and 204 and 207 show the LPP detection circuit 112. The timing of detecting the address signal from the LPP is shown, and 208 is the timing of recording data output from the modulation circuit 111. Also, in FIG.
1, 302, 304 are LPP detection circuits 112
The timing of detecting the address signal from the
Reference numerals 3 and 305 denote timings at which recording data is output from the modulation circuit 111. It should be noted that the delimiter in the horizontal axis direction is a delimiter in block (ECC block) units.

FIG. 2 will be specifically described. First, ADIP
Four pieces of address information corresponding to a certain block n are detected from the signal, and the address corresponding to the block n is determined (201). Next, while the address is determined from the ADIP for the block n + 1 (202), the address n is simultaneously encoded (converted) to the LPP system and output (203). The LPP corresponding to the output address n is sent to the LPP detection circuit 112 and set to 1
Address n is detected with a delay between blocks (204).
Since the write start timing from the modulation circuit 111 can be determined by detecting the address n, (20
Data recording can be started in 8). ADI
Address detection from P (201), encoding (conversion) to LPP and address detection from LPP (203)
Since the time between two blocks is consumed in (204), it is possible to match the position on the medium by outputting (208) the data corresponding to the address of n + 2 after the address of n is detected.

Similarly, FIG. 3 will be specifically described. The LPP for the input address n is the LPP detection circuit 112.
The address n is detected for one block and is detected (301). Since the write start timing from the modulation circuit 111 can be determined by detecting the address n, the data recording can be started at (303). Since the address detection (301) from the LPP consumes a time for one block, after the address of n is detected, the data corresponding to the address of n + 1 is output (303).
Then, the position on the medium can be matched.

Next, a digital signal recording apparatus according to a second embodiment of the present invention will be described with reference to FIG. It should be noted that this digital signal recording device is compatible with DVD-R, DVD-RW, D
It is possible to write to VD + RW. In this embodiment, the LPP detection circuit 507, the ADIP generation circuit 508, the switch circuits 509, 507, 508, and 509, and the LPP-ADIP conversion circuit 510 and ADI.
The configuration excluding the P detection circuit 512 is the same as that of the digital signal recording apparatus shown in FIG. The LPP detection circuit 507 has 2
Address information is detected from the binarized LPP signal input 106. The ADIP generation circuit generates a binarized ADIP according to the detected address information. When recording on a DVD + RW disc, the switch circuit 509
When the binarized ADIP signal 105 from the analog front end is selected and recorded on the DVD-R or DVD-RW disc, the output of the ADIP generation circuit 508 is selected. The ADIP signal selected by 509 is sent to the ADIP detection circuit 512. The ADIP detection circuit 512 detects the address information from the ADIP and determines the timing of recording control. The recording signal is output from the modulation circuit 111 in accordance with the control timing from the ADIP detection circuit. Other operations are the same as those in FIG.

As described above, according to the present embodiment, the switch circuit 50
By switching 9 to the ADIP generation circuit side, DV
It is possible to perform recording of D-R and DVD-RW, and it becomes possible to perform recording of DVD + RW by switching to the input signal 106 side from the AFE 104.

Next, a digital signal recording / reproducing apparatus which is a third embodiment of the present invention will be described with reference to FIG. 10
Each element 1, 102, 103 is common to the recording apparatus of FIG. The analog front end 604 is different from 104 in that the analog front end 104 in FIG. 1 has a function of binarizing the signal of the data track of the disc and sending it to the demodulation circuit 632, and the subsequent operation is common. Is. 107,108,109,110,111,112,
Reference numerals 113 and 114 are components related to recording, and the operation at the time of recording and each configuration are 107, 108, and 10 in FIG.
It is common with 9,110,111,112,113,114. The input / output IF 615 also outputs the reproduction signal in addition to the input IF 115 of FIG. The constituent elements relating to reproduction will be described below.

The demodulation circuit 632 demodulates the input reproduction signal and reproduces the main data and each data of the added ID. The error correction processing circuit 631 performs error correction processing on the reproduced data. The corrected data is descrambled by the descrambler 630 and then output from the terminal 618 via the input / output IF 615.

In this recording / reproducing apparatus, 604,1 is used during recording.
Address information can be detected by the functions of 07, 108, 109, 110, 112, and DVD-R, DVD-RW, DVD
Data can be written at a desired location on the disk regardless of the type of + RW. Also, during playback, DVD-
Since the ID including the address information can be reproduced by the demodulation circuit 632 regardless of the type of R, DVD-RW, or DVD + RW, it becomes possible to reproduce the data from a desired location based on this.

Therefore, according to this embodiment, the address can be detected regardless of the type of DVD-R, DVD-RW, and DVD + RW during recording and reproduction, and reading / writing can be performed on a desired portion of the disc. Is.

[0030]

According to the present invention, by adding a conversion circuit to the encoder circuit corresponding to the optical disc of the first standard, it is possible to easily record on the optical disc of the second standard.

[Brief description of drawings]

FIG. 1 is a block diagram showing a digital signal recording apparatus according to a first embodiment.

FIG. 2 is a timing diagram of the first embodiment.

FIG. 3 is a timing chart of the first embodiment.

FIG. 4 is a block diagram showing a conventional digital signal recording device.

FIG. 5 is a block diagram showing a digital signal recording device according to a second embodiment.

FIG. 6 is a block diagram showing a digital signal recording device according to a third embodiment.

[Explanation of symbols]

105 ... Binary ADIP signal 106 ... Binary LPP signal 107 ... ADIP detection circuit 108 ... LPP generation circuit 109 ... Switch circuit 110 ... ADIP-LPP conversion circuit 112 ... LPP detection circuit 507 ... LPP detection circuit 508 ... ADIP generation circuit 512 ... ADIP detection circuit

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masayuki Hirabayashi             292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Ceremony Hitachi Digital Media Development Book             Department (72) Inventor Masaaki Kurebayashi             292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa             Ceremony Hitachi Digital Media Development Book             Department F term (reference) 5D044 AB05 AB07 BC04 CC04 DE17                       DE38 EF05 FG18 GK11                 5D090 AA01 BB10 CC12 FF29

Claims (13)

[Claims] 1. A first represented by phase modulation of wobble.
The first disk-shaped recording medium in which the address of each ECC block is indicated by the address information of No. 1 and the address of each ECC block is indicated by the second address information expressed by the protrusion provided on the land track. A disc-shaped recording medium of No. 2 and a digital signal recording device for recording data in ECC block units, the first detection means for detecting the first address information from the first disc-shaped recording medium; Conversion means for converting the first address information detected by the first detection means into the second address information; and an ECC block in the first disc-shaped recording medium from the converted second address information. And a second detecting means for detecting the address of the digital signal recording apparatus. 2. A first expressed by wobble phase modulation.
The first disk-shaped recording medium in which the address of each ECC block is indicated by the address information of No. 1 and the address of each ECC block is indicated by the second address information expressed by the protrusion provided on the land track. A disc-shaped recording medium of No. 2 and a digital signal recording / reproducing apparatus for recording data in ECC block units, and a first detecting means for detecting the first address information from the first disc-shaped recording medium. A conversion means for converting the first address information detected by the first detection means into the second address information, and an ECC in the first disc-shaped recording medium from the converted second address information. A second detection means for detecting the address of the block, and at the time of recording on the first disk-shaped recording medium A digital signal recording / reproducing apparatus wherein the address of an ECC block is detected by the second detecting means. 3. A first represented by wobble phase modulation.
The first disk-shaped recording medium in which the address of each ECC block is indicated by the address information of No. 1 and the address of each ECC block is indicated by the second address information expressed by the protrusion provided on the land track. A second disc-shaped recording medium, a digital signal recording method for recording data in units of ECC blocks, the first detection process of detecting the first address information from the first disc-shaped recording medium, Conversion processing for converting the first address information detected by the first detection means into the second address information, and an ECC block in the first disc-shaped recording medium from the converted second address information And a second detection process for detecting the address of the digital signal recording method. 4. A first represented by wobble phase modulation.
The first disk-shaped recording medium in which the address of each ECC block is indicated by the address information of No. 1 and the address of each ECC block is indicated by the second address information expressed by the protrusion provided on the land track. In the digital signal reproducing method for reproducing data from the second disk-shaped recording medium in ECC block units, a first detection process of detecting the first address information from the first disk-shaped recording medium, Conversion processing for converting the first address information detected by the first detection means into the second address information, and an ECC block in the first disc-shaped recording medium based on the converted second address information. A second method of reproducing a digital signal, characterized by performing a second detection process of detecting an address. 5. A first disk-shaped recording medium in which an address of each ECC block is indicated by first address information expressed by a protrusion provided on a land track, and a first disk-shaped recording medium expressed by wobble phase modulation. A second disc-shaped recording medium in which the address of each ECC block is indicated by the address information of 2; and a digital signal recording device for recording data in ECC block units, wherein: First detecting means for detecting first address information, converting means for converting the first address information detected by the first detecting means into the second address information, and the converted second Second detecting means for detecting the address of the ECC block in the first disc-shaped recording medium from the address information of A digital signal recording device characterized by being provided. 6. A first disk-shaped recording medium in which an address of each ECC block is indicated by first address information expressed by a protrusion provided on a land track, and a first disk-shaped recording medium expressed by wobble phase modulation. A second disc-shaped recording medium in which the address of each ECC block is indicated by the address information of 2; and a digital signal recording / reproducing apparatus for recording data in ECC block units, wherein: First detecting means for detecting the first address information, converting means for converting the first address information detected by the first detecting means into the second address information, and the converted first Second detecting means for detecting the address of the ECC block in the first disk-shaped recording medium from the address information of 2. , And the address of the ECC block is detected by the second detecting means at the time of recording on the first disk-shaped recording medium. 7. A first disk-shaped recording medium in which an address of each ECC block is indicated by the first address information expressed by a protrusion provided on a land track, and a first disk-shaped recording medium expressed by wobble phase modulation. A second disc-shaped recording medium in which the address of each ECC block is indicated by the address information of 2; and a digital signal recording method for recording data in ECC block units, wherein: A first detection process for detecting first address information, a conversion process for converting the first address information detected by the first detection means into the second address information, and the converted second Second detection processing for detecting the address of the ECC block in the first disc-shaped recording medium from the address information of A method for recording a digital signal, characterized in that it is performed. 8. A first disk-shaped recording medium in which an address of each ECC block is indicated by first address information expressed by a protrusion provided on a land track, and a first disk-shaped recording medium expressed by wobble phase modulation. A second disc-shaped recording medium in which the address of each ECC block is indicated by the address information of No. 2, and a digital signal reproducing method for reproducing data in ECC block units from the first disc-shaped recording medium. First detection processing for detecting the first address information, conversion processing for converting the first address information detected by the first detection means into the second address information, and the converted second Second detection processing for detecting the address of the ECC block in the first disc-shaped recording medium from address information. A method for reproducing a digital signal, characterized by: 9. A first recording medium having first address information expressed in a first format, and a second recording medium having second address information expressed in a second format. A signal recording device capable of recording data, the first detecting means for detecting address information expressed in the first format, and the first detecting means for detecting address information expressed in the second format. 2. A signal recording device comprising: two detecting means; and converting means for converting the first address information expressed in the first format into the expression in the second format. 10. The signal recording device according to claim 9, wherein the first recording medium is a DVD + RW, and the second recording medium is a DVD + RW.
The recording medium is a DVD-RW, which is a signal recording device. 11. The signal recording device according to claim 9, wherein the first recording medium is a DVD-RW, and the second recording medium is a DVD-RW.
The recording medium is a DVD + RW signal recording device. 12. The signal recording device according to claim 9, wherein the first detection circuit and the conversion means are contained in a first integrated circuit, and the second detection circuit is a second integrated circuit. A signal recording device characterized by being contained in a circuit. 13. The signal recording device according to claim 9, wherein the first detection circuit, the second detection circuit, and the conversion means are all contained in the same integrated circuit. Signal recorder.