JP2001236726A - Composite drive assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable dubbing of reproducing data of a CD by CD-R drive while commonly using a CD decoder with both of a DVD drive and a CD-R drive. SOLUTION: Respective pieces of the read data obtained by reading respective first standard recording media by a first drive and a second drive are selectively inputted to the first decoder 6 by a decoder input selecting means 5. The reproducing data obtained by the first decoder 6 is selectively inputted to an encoder 16 by an encoder data selecting means 15. The decoder input selecting means 5 is so switched that the data read by the second drive is inputted to the first decoder 6 when reproducing the first standard recording medium by the second drive and the encoder input selecting means 15 is so switched that the reproducing data obtained by the first decoder 6 is inputted to the encoder 16 when recording the reproducing data of the first standard recording medium reproduced from the first drive.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite drive device in which different recording medium drives respectively corresponding to different prescribed recording media are incorporated in the same housing.
A composite drive including one recording medium drive capable of reproducing each recording medium conforming to each standard, and the other recording medium drive capable of recording and reproducing a recording medium conforming to one standard. Related to the device.

[0002]

2. Description of the Related Art As an optical disk from which signals are optically read using an optical head, a CD (compact disk) and a disk having the same disk diameter as the CD are used to ensure mechanical compatibility and further increase the capacity. CD to meet your needs
Higher density DVDs (Digital Video Discs) are known.

[0003] In the DVD drive for reproducing the DVD, upward compatibility with the CD is ensured, and the CD can be reproduced.

By the way, as a recording apparatus of the CD system, C
Although a DR (Recordable) drive is known, a composite drive device in which this CD-R drive is incorporated in the same housing as the DVD drive to enable dubbing between disks can be considered.

[0005]

In the above-mentioned combined drive apparatus in which a DVD drive and a CD-R drive are combined, a CD can be played back by both drives, but a CD is played back simultaneously by two drives. The possibility of letting it use is unlikely.

Therefore, if a CD decoder for decoding CD data read from a CD is shared by both the DVD drive and the CD-R drive, the circuit can be streamlined, and such a circuit configuration is desired. .

[0007] It is also desirable to dub reproduction data obtained by reproducing a CD with a CD-R drive while using a circuit configuration in which a CD decoder is shared by both the DVD drive and the CD-R drive.

[0008]

According to the present invention, a first decoder selectively reads data of a first standard recording medium read by a first drive and data of a first standard recording medium read by a second drive. And a decoder input selecting means for selectively inputting the reproduction data obtained by the first decoder to the encoder, and a second drive for reproducing the first standard recording medium by the second drive. The decoder input selection means is switched so that the data read by the drive is decoded by the first decoder,
The encoder input selection means is switched so that the reproduction data obtained by the first decoder is input to the encoder when the reproduction data of the first standard recording medium reproduced by the drive is recorded by the first drive. .

[0009]

FIG. 1 is a circuit block diagram showing an embodiment of a composite drive device according to the present invention in which a DVD drive and a CD-R drive are incorporated in the same housing. FIG. 1 shows an audio signal system, and omits a video signal system of a DVD drive.

[0010] 1 is the first integrated in the CD-R drive
An optical head. The first optical head 1 is a 7
A laser beam having a wavelength of 80 nm is emitted.

Reference numeral 2 denotes a second optical head incorporated in the DVD drive. The second optical head 2 is a 6
A laser beam having a wavelength of 50 nm is emitted, and the aperture diameter for limiting the light beam incident on the objective lens is switched so as to be compatible with DVD reproduction and CD reproduction.

Reference numeral 3 amplifies an RF signal (radio frequency signal) of the received light output obtained by the first optical head 1, and amplifies the RF signal.
The first RF amplifier 4 for binarizing the signal amplifies the RF signal of the received light output obtained by the second optical head 2 and outputs the R signal.
The second RF amplifier binarizes the F signal.

Reference numeral 5 denotes a first selection switch for selectively supplying binarized data of the RF signal output from the first RF amplifier 3 and the second RF amplifier 4 to a subsequent stage, and 6 is selected by the first selection switch 5. This is a CD decoder that decodes the binarized data in accordance with the data structure prescribed in the CD system.

Reference numeral 7 denotes a DA converter for converting reproduction data obtained by the CD decoder 6 into an analog reproduction signal;
Reference numeral 8 denotes a CD output terminal for outputting the reproduction signal converted by the DA converter 7.

Reference numeral 9 denotes an RF output from the second RF amplifier 4
A DVD decoder that decodes the binary data of the signal in accordance with the data structure prescribed in the DVD system, 10 is a DV decoder
The D / A converter 11 converts audio reproduction data obtained by the D decoder 9 into an analog reproduction signal.
This is a DVD audio output terminal for outputting the reproduction signal converted by the A converter 10.

Reference numeral 12 denotes an audio input terminal to which an audio signal from a source device connected to the outside is input by an analog input signal, and reference numeral 13 denotes an audio signal input to the audio input terminal 12 and output from the DA converter 10. A second selection switch 14 for selecting an audio signal is the second selection switch 1
An AD converter 15 for converting the audio signal selected by 3 into digital audio data;
A third selection switch 16 for selecting the audio data output from the CD decoder 6 and the audio data output from the CD decoder 6, and the audio data selected by the third selection switch 15 is recorded data having a data structure defined by the CD system. Is a CD encoder that modulates the data.

The CD encoder 16 has a CIRC (Cross Interleaved Reed-Solomon Code) which is an error correction code.
Along with the processing, a subcode is added, and an EFM processing is performed to add a frame synchronization signal.

Reference numeral 17 denotes the first optical head 1 based on the recording data of the EFM data output from the CD encoder 16.
This is a laser control circuit that controls the laser beam generated from the laser.

A switching control circuit 18 controls switching of the first selection switch 5, the second selection switch 13, and the third selection switch 15.

When playing back a CD in the composite drive device configured as described above, the switching control circuit 18 controls the first selection switch 5 according to the drive used for playback.
Is switched, and when the CD is reproduced by the CD-R drive, the first selection switch 5 is set to the first RF amplifier 3
Is switched so as to select the read data of the CD output from the DVD drive. On the other hand, when performing the CD reproduction by the DVD drive, the first selection switch 5 selects the read data of the CD output from the second RF amplifier 4. Can be switched to

The read data of the CD selected by the first selection switch 5 is decoded by a CD decoder 6 and then converted into an analog signal by a DA converter 7. Therefore, from the CD output terminal 8, a music signal obtained by converting the read data of the CD obtained by decoding the read data by the CD decoder 6 into an analog signal by the DA converter 7 is derived.

Therefore, a CD-R drive and a DVD
CD playback can be performed by any of the drives.

Next, the case of dubbing reproduction data obtained by reproducing a CD by a CD-R drive will be described.

In this case, a CD-R disc is mounted on the CD-R drive, a CD to be dubbed is mounted on the DVD drive, the dubbing operation is performed, and the first selection switch 5 is switched by the switching control circuit 18. Switching is performed so as to select the CD read data output from the second RF amplifier 4, and the third selection switch 15 is set to the CD.
Switching is performed so as to select the reproduction data of the CD output from the decoder 6.

In this state, a CD read signal read by the second optical head 2 is transmitted to the second RF amplifier 4.
The read data of the binarized CD is supplied to the CD decoder 6 via the first selection switch 5, and the reproduction data obtained by the CD decoder 6 is supplied via the third selection switch 15 It is supplied to the CD encoder 16.

Therefore, the reproduction data obtained by the CD decoder 6 is encoded by the CD encoder 16, and the CD encoder 16 generates recording data based on the reproduction data. Since the laser control circuit 17 controls the laser beam generated from the first optical head 1 based on the recording data, the recording data is written on the CD-R disc mounted on the CD-R drive.

Therefore, the read data of the CD read by the DVD drive is dubbed to the CD-R disc mounted on the CD-R drive.
CD reproduction data obtained by the D decoder 6 is input to the CD encoder 16 as a digital signal, and recording data based on the reproduction data is recorded on a CD-R disc without being converted into an analog signal.

The reproduction data of the CD output from the CD decoder 6 at the time of the dubbing is converted into an analog signal by the DA converter 7, and the analog-converted music signal is converted into a CD.
Since it is derived from the output terminal 8, the CD being dubbed
Can be monitored.

Also, the D read by the DVD drive
When recording a VD audio signal or an audio signal from a source device connected to the audio input terminal 12 on a CD-R disc mounted on a CD-R drive, the third selection switch 15 is output from the AD converter 14. To select the audio data to be played.

When the second selection switch 13 is switched to a state in which the audio signal output from the DA converter 10 is selected in the state where the third selection switch 15 is switched as described above, the audio data obtained by the DVD decoder 9 becomes the DA signal. After being once converted into an analog audio signal by the converter 10,
The digital data is again converted by the converter 14 and supplied to the CD encoder 16. Therefore, CD encoder 1
6 generates recording data based on the audio signal of the DVD reproduced by the DVD drive,
-Written on a CD-R disc mounted in the R drive.

On the other hand, when the third selection switch 15 is switched to select the audio data output from the AD converter 14, the second selection switch 13 is set to select the audio signal input to the audio input terminal 12. , The audio signal is converted to digital audio data by the AD converter 14 and the CD encoder 1
6 is input. Therefore, recording data is generated by the CD encoder 16 based on the audio signal input to the audio input terminal 12, and the recording data is written to a CD-R disc mounted on a CD-R drive.

The audio signal output from the DA converter 7 is also selectable by the second selection switch 13 so that the reproduced data read and decoded by the DVD drive is once converted into an analog signal and converted into a digital signal again. Conversion and dubbing to be recorded on a CD-R disc by a CD-R drive can be performed, and such a configuration may be adopted as necessary.

[0033]

As described above, according to the present invention, both the first drive and the second drive share the first decoder, and both the drives can reproduce the first standard recording medium. It is possible to dub the reproduction data reproduced from the first standard recording medium.

In particular, when dubbing the reproduction data reproduced from the first standard recording medium, the reproduction data obtained by the first decoder is directly input to the encoder as a digital signal. Deterioration of reproduced data due to conversion into a digital signal after conversion can be prevented.

When a reproduction signal of a second standard recording medium having a different standard from that of the first standard recording medium for recording is recorded on the first standard recording medium, the reproduced signal is once converted into an analog signal and then converted again into a digital signal. After that, the data is converted into recording data by the encoder, so that dubbing when the standards of the recording media are different is achieved.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram showing an embodiment of a composite drive device according to the present invention in which a DVD drive and a CD-R drive are incorporated in the same housing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 1st optical head 2 2nd optical head 5 1st selection switch (decoder input selection means) 6 CD decoder (1st decoder) 9 DVD decoder (2nd decoder) 15 3rd selection switch (encoder input selection means) 16 CD Encoder 17 Laser control circuit 18 Switching control circuit

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Takashi Iwasaki 2-5-5 Keihanhondori, Moriguchi-shi, Osaka F-term in Sanyo Electric Co., Ltd. 5D044 BC03 BC05 BC06 CC04 HL07 JJ06 JJ07

Claims (2)

[Claims] 1. A first drive capable of reproducing a first standard recording medium and a second standard recording medium conforming to a first standard and a second standard having different data structures, respectively, and the first standard recording. In a combined drive device in which a second drive capable of recording and reproducing a medium is incorporated in the same housing, a first decoder that decodes read data of a first standard recording medium to obtain reproduced data, A second decoder that decodes data read from the recording medium to obtain reproduction data, an encoder that generates recording data to be recorded on the first standard recording medium, and read data of the first standard recording medium that is read by the first drive Decoder input selection for selectively inputting data read from a first standard recording medium read by the second drive to the first decoder. Means, and encoder input selecting means for selectively inputting the reproduction data obtained by the first decoder to the encoder, wherein when the second drive reproduces the first standard recording medium, the data read by the second drive is The decoder input selection means is switched so as to be decoded by the first decoder, and is obtained by the first decoder when the reproduction data of the first standard recording medium to be reproduced by the second drive is recorded by the first drive. A composite drive device wherein the encoder input selection means is switched so that reproduction data is input to the encoder. 2. The reproduction data obtained by the first decoder is directly input to the encoder input selection means as a digital signal as it is, and the reproduction data obtained by the second decoder is once converted into an analog signal and then converted into a digital signal again. 2. The multi-drive apparatus according to claim 1, wherein the data is input after being converted into the data.