JP2001067774A - Disk recorder and disk player - Google Patents

Abstract

PROBLEM TO BE SOLVED: To recognize the kind of a disk loaded on a turntable and disk information on whether or not the disk is recorded. SOLUTION: This disk recorder 1 is provided with a disk information generating means 13 for reading kind information recorded on the disk with optical heads 6, 7 and generating the disk information based on the kind information of the disk read with the optical heads 6, 7, a display means 17 for displaying the disk information generated by the disk information generating means 13, and a control means 15 for controlling so that the kind information recorded on the disk is read with the optical heads 6, 7 when the disk is loaded on the turntable, the disk information generating means 13 generates the disk information based on the kind information and the disk information generated by the disk information generating means 13 is displayed on a display means 17.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk recorder for recording and reproducing sound or sound and image on a disk and a disk player for reproducing sound or sound and image from the disk, and more particularly, to mounting a disk on a turntable. Then, the present invention relates to a disk recorder and a disk player in which disk information including the type of disk and the presence or absence of recording is automatically displayed.

[0002]

2. Description of the Related Art In recent years, with the development of multimedia, C
Discs, which are random access media such as D (Compact Disc) and video CD, are rapidly spreading.
Such random access media disks have excellent features such as higher fidelity, higher density, improved operability, and more functions than tape media based on magnetic recording technology.

[0003] Although the CD has such excellent features, it has a problem in that it is easily recorded. Therefore, compact discs that can be recorded are CD-R and CD-RW.
There is. A CD-R (CD-Recordable) is a compact disc on which data can be recorded, and a compact disc on which data can be written only once. CD-RW (CD
-ReWritable) is a compact disc that allows data to be rewritten any number of times. CD and CD-R have a reflectance of 6
Since it is 5% or more, it can be reproduced by a general CD player. Since the reflectivity of a CD-RW is 15 to 25%, it cannot be reproduced by a general CD player, and can be reproduced only by a CD recorder, CD player or CD player compatible with CD, CD-R, and CD-RW.

FIG. 5 shows such a CD, CD-R and CD-R.
FIG. 14 is a diagram illustrating a display example displayed on a display unit by setting a disc in a CD recorder compatible with RW. For the recorded CD-R disc and CD-RW disc, for example, a circle indicating the disc and the character CD indicating that the disc is a recorded CD are displayed on the display unit. In the state before recording (the state before recording is impossible because the CD disk has already been recorded), the CD-R disc and the CD-R
Nothing is displayed when the W disk is set in the CD recorder.

[0005]

DISCLOSURE OF THE INVENTION CD disk, CD-
In the case of an R disk and a CD-RW disk, the letters CD or CD-R or CD-RW are usually written on the label surface of the disk. -R, CD
Since the same display is made on the display unit for each of the -RW disks, there is a problem that the type of the disk cannot be determined. In particular, in a CD recorder equipped with a disc changer, it is hardly known where and what kind of disc is stored. Therefore, it is necessary to take out the disc from the CD recorder and determine the type of the disc by looking at the label surface of the disc.

Further, if a label describing the recorded content is attached to the label surface of the disk, the type of the disk cannot be known by looking at the disk. If the disc type cannot be determined, the disc is a CD or C
It is not clear whether it is a DR or CD-RW, and it can be erased or re-recorded, whether it should be handled carefully as an original CD or a CD-R that can be easily taken out with a portable CD player for easy handling. You will not know if it is a CD-RW, and you will be lost in handling it.

In view of the above, the present invention solves the above-mentioned problems by automatically displaying the disk information including the type of the disk and the presence or absence of recording when the disk is mounted on the turntable. It is an object of the present invention to provide a disc recorder and a disc player as described above.

[0008]

According to the present invention, there is provided a disk recorder for recording and reproducing a sound or a sound and an image on a disk on a turntable by an optical head. A disk information creating unit that reads with an optical head and creates disk information based on the type information of the disk read by the optical head, and a display unit that displays the disk information created by the disk information creating unit. When the disk is mounted on the turntable, type information recorded on the disk is read by the optical head, and the disk information creating means creates disk information based on the type information, and the disk information creating means Control means for controlling the display means to display the disk information created by the user That it comprises a and is characterized in.

In the disk recorder according to the present invention, when the disk is mounted on the turntable, the optical head reads the type information recorded on the disk, and the disk information generating means generates the disk information based on the type information. The disc information is displayed on the display means. Therefore, the type of the disc on the turntable can be specified, and an operation corresponding to the type can be performed.

[0010] A disc player according to the present invention is a disc player for reproducing sound or sound and image from a disc on a turntable by an optical head, and reads the type information and finalization processing information recorded on the disc with the optical head. Disk information creating means for creating disk information based on the type information and finalization processing information of the disk read by the optical head;
Display means for displaying the disc information created by the disc information creating means, and when the disc is mounted on the turntable, the type information and finalization processing information recorded on the disc are displayed by the optical head. Reading means for controlling the disc information creating means to create disc information based on the read type information and the finalization processing information, and displaying the created disc information on the display means. It is characterized by the following.

In the disk player according to the present invention, when the disk is mounted on the turntable, the optical head reads the type information and the finalization processing information recorded on the disk, and reads the type information and the finalization processing information based on the type information and the finalization processing information. The information creating means creates disk information, and the disk information is displayed on the display means. Therefore, the type of the disc on the turntable can be specified.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a disk recorder according to the present invention will be described below with reference to the drawings. FIG.
CD, C, which are examples of the disk recorder according to the present invention.
1 is a schematic block diagram of a CD recorder compatible with DR and CD-RW. The CD recorder 1 is a recorder compatible with CD-R and CD-RW, and is also a player compatible with CD, CD-R and CD-RW. The CD recorder 1 is provided with a turntable (not shown).
A disk such as -R or CD-RW is mounted, and a spindle motor 3 is directly connected to a shaft of the turntable. Digital signals from external devices are
The signal is converted into the same signal as the signal form of D, input to the laser power control unit 5, controlled by the power control unit 5, and the disk is irradiated with laser light from the laser diode 6. The return light from the disk is converted into an electric signal by the photodiode 7, and the servo signal is used by the servo processor 9 to perform focus, tracking, rotation, and feed servo. Is controlled so as to gather on the recording film surface of the recording medium. An optical head is composed of the laser diode 6, the photodiode 7, and the like.

On the other hand, at the time of reproduction, a laser beam is emitted from the laser diode 6 to the disk, and the return light from the disk is converted into an electric signal by the photodiode 7. The servo processor 9 applies focus, tracking, rotation, and feed servos using the electric signal from the photodiode 7 to drive the driver 10, and the electric signal from the photodiode 7 is input to the CD signal processing circuit 12. It is processed. The output signal from the CD signal processing circuit 12 is input to the disk information creating means 13, processed and output to the microcomputer 15 which is the control means, and also to the external audio equipment 18. The microcomputer 15 receives an operation signal from the operation unit 16 and outputs the operation signal from the microcomputer 15 to the display unit 17.

According to the present invention, when a disc is mounted on the turntable, disc information indicating the type of the disc and whether or not the disc has been recorded is created by the disc information creating means 13, and this disc information is displayed on the display section 17. It is.

FIG. 2 is a schematic front view of the main body of the CD recorder according to the present invention. At the center lower part of the front panel 2 of the main body 1 of the CD recorder, a disk door 21 for inserting a disk, and above the disk door 21, a display unit 17 as display means for displaying an operation state and the like, and the front panel 2
A power switch 23 and a disc eject button 24 for ejecting a disc are provided on the left side of the disc.

On the right side of the front panel 2, a play button 26 for starting reproduction, a pause button 27 for temporarily stopping reproduction, and a stop button 2 for stopping reproduction midway.
8, a recording button 30 for starting recording, a finalize button 31 for starting finalization described later, an erase button 3 for erasing a signal recorded on a disk
2. A recording level dial 33 for setting a recording level is provided. Power switch 23, disc eject button 24, play button 26, pause button 27, stop button 2
8, recording button 30, finalize button 31, erase button 3
The operation unit 16 is composed of a recording level dial 2, a recording level dial 33 and the like.

Next, finalization will be described.
FIG. 3 is an explanatory diagram of a mechanism of additional recording of the CD recorder. Audio CD-R discs and CD-RW discs can be recorded once and then additional data can be additionally recorded. As shown in FIG. 3 (1), when no additional recording is performed, that is, when recording is performed once and then writing is not performed, after recording, the finalization is called "finalization", and the innermost circumference of the disk is read. T in the in part
A process of recording an OC (Table Of Contents) is performed (a process called lead-out is also performed). By pressing the finalize button 31, a finalize process is performed. If the disc has a structure of “TOC (lead-in) → data → lead-out”, the disc written by the CD recorder is a CD-R / CD-RW compatible C
It can be played back with a D player.

On the other hand, when additional recording is performed, as shown in FIG. 3 (2), even if one track is recorded, the finalizing process is not performed. In the case of a disc that has not been finalized, it cannot be played back by a normal CD player, but can be played back only by a recording CD recorder.
When two tracks and three tracks are added and finalized, the data can be reproduced by a CD-R / CD-RW compatible CD player.

Both a CD disk and a CD-R disk written and finalized by a CD recorder have a reflectance of 65% or more, and can be reproduced by a general CD player. On the other hand, a CD-RW disc written and finalized by a CD recorder has a low reflectance of 15 to 25%, and cannot be reproduced by a general CD player. A CD-RW disc that has been finalized can be reproduced only by a CD-RW compatible CD player.

Further, a special area is provided further inside the lead-in portion on the innermost circumference of the disc, in a range of 44.7 mm to 46 mm in terms of diameter, and the type of the disc is set in this special area. Information for identification is recorded. For example, this disc is an audio CD, CD
-R, CD-RW. When the disc is mounted on the turntable, the driver 10 is driven by the control of the microcomputer 15 to move the optical head (not shown) to the special area, the type information of the disc is read by the photodiode 7, and then the optical head is read-in. After that, the TOC information is read by the photodiode 7. The disc type information and TOC information read by the photodiode 7 and converted into an electric signal are processed by the CD signal processing circuit 12,
Is output to The disc information creating means 13 creates disc information including disc type information and whether or not the TOC has been recorded by the finalization process, and the disc information is output to the display unit 17 via the microcomputer 15.

FIG. 4 shows disc information displayed on the display unit when a disc is set on the turntable of the CD recorder. Initial state of disc, ie CD
In the state where the disc is not recorded by the recorder 1, in the case of a CD disc, along with the letters "CD",
A round circle indicating the disc and a black circle which is a TOC mark indicating that the TOC is recorded at the center thereof are shown.
In the initial state of the CD-R disc, the CD-R
, And a round circle indicating the disk is shown.
In the initial state of the CD-RW disc, the CD-RW
A round circle indicating the disc is shown with the letters RW.

On the other hand, when a CD-R disc is recorded and finalized and the TOC is recorded,
Along with the letters CD and CD-R, a round circle indicating a disc and a black circle as a TOC mark are shown at the center.
If the CD-RW disc is recorded and finalized and the TOC is recorded, the CD, CD-RW
, A round circle indicating a disc, and a black circle as a TOC mark at the center thereof.

As described above, in the case of a CD-R disc, after it has been recorded and finalized, it is known that this disc is a CD-R disc and has been recorded and has been finalized. I ca n’t,
It turns out that the record cannot be erased. In the case of a CD-RW disc, after recording and finalizing, the disc is
Since it is known that the disc is a W disk and has been recorded and has been subjected to finalization processing, it is found that unfinalization processing and erasing (erasing) of recording can be performed.

Therefore, since the type and state of the disk are known, the CD-RW disk can be known without fail.
Unfinalization processing and erasing (erasing) can be performed safely, and erroneous operations can be reliably prevented.

Also, for example, even if a label is stuck on the label surface of the disc and the disc type cannot be specified, the disc type and state can be reliably known by mounting the disc on the turntable of the CD recorder. it can.

In particular, when the CD recorder is equipped with a disc changer, since it is hardly known which type of disc is currently mounted on the turntable, the type and state of the disc are automatically determined. Is extremely useful.

Furthermore, since a CD disk or a CD-R disk can be specified, it is possible to know that the disk can be reproduced by a general CD player. Since the TOC mark is displayed, it is possible to confirm at a glance that the disc has been recorded and has been finalized.

In the above embodiment, the CD / CD-
Although a CD recorder compatible with R / CD-RW was used, the present invention is not limited to this, and CD players and CD / CDs compatible with CD / CD-R
-R / CD-RW compatible CD player.
It goes without saying that a CD recorder or a CD player that supports all CD families such as a D-ROM and a video CD may be used.

Although a black circle is used as the TOC mark, the present invention is not limited to this, and other shapes such as a small circle and a square may be used.
Further, the whole round circle indicating the disk may be painted out.

[0030]

As described above, according to the present invention,
The type of the disc on the turntable and the presence or absence of recording are displayed on the display unit, so that the CD-RW disc can be surely known, and the unfinalizing process can be performed safely.
Erase can be performed, and erroneous operation can be reliably prevented.

Even when a label is stuck on the label surface of the disc and the disc type cannot be specified, the disc can be reliably mounted on the turntable of the disc recorder or disc player by reliably mounting the disc type and the presence or absence of recording. You can know.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram of a CD recorder according to the present invention.

FIG. 2 is a schematic front view of a main body of the CD recorder according to the present invention.

FIG. 3 is an explanatory diagram of a mechanism of additional recording of a CD recorder.

FIG. 4 is a diagram showing an example of disc information displayed on a display unit when a disc is set on a turntable of a CD recorder.

FIG. 5 is a diagram showing a display example displayed on a display unit by setting a disc in a conventional CD recorder.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 CD recorder (disk recorder) 2 front panel 3 spindle motor 6 laser diode 7 photodiode 9 servo processor 10 driver 12 CD signal processing circuit 13 disk information creation means 15 microcomputer (control means) 16 operation unit 17 display unit 30 recording button 31 Finalize button 32 Erase button

Claims (5)

[Claims] 1. A disk recorder for recording and reproducing sound or sound and image on a disk on a turntable by an optical head, wherein the type information recorded on the disk is read by the optical head, and the type information is read by the optical head. Disk information creating means for creating disk information based on the type information of the disk; display means for displaying the disk information created by the disk information creating means; and when the disk is mounted on the turntable ,
The type information recorded on the disc is read by the optical head, the disc information creating means creates disc information based on the read type information, and the created disc information is displayed on the display means. A disk recorder, comprising: 2. The optical head reads information on the presence or absence of recording on the disk together with the type information of the disk,
2. The disc recorder according to claim 1, wherein the disc information creating means creates the disc information based on the type information of the disc and information on whether or not the disc is recorded. 3. The disc recorder according to claim 2, wherein the information on the presence or absence of recording on the disc is information on the presence or absence of a finalizing process. 4. The disk recorder according to claim 3, wherein the information about the presence or absence of the finalizing process is information about the presence or absence of a TOC. 5. A disk player for reproducing sound or sound and image from a disk on a turntable by an optical head, wherein the type information and finalization processing information recorded on the disk are read by the optical head, and read by the optical head. Disc information creating means for creating disc information based on the obtained disc type information and finalization processing information; display means for displaying the disc information created by the disc information creating means; and When the disc is loaded,
The type information and finalization processing information recorded on the disk are read by the optical head, and the disk information creation unit creates disk information based on the read type information and finalization processing information. And a control means for controlling display on the display means.