JPH0793877A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To detect a state of recording operation of a disk type recording medium by providing a display control means which can perform display in which kinds and/or state of the disk type recording medium can be discriminated. CONSTITUTION:For example, a recording and reproducing device is provided with a display section 20 constituted of liquid crystal display elements. And a system controller 11 makes a spindle motor 2 and an optical head 3 drive at a point of time of loading a disk 1, data of a TOC region set, for example, in the most inner peripheral side of the disk 1 is sampled. When any music is recorded in a MO disk, an area not recorded yet on the disk is searched from an user TOC being a part of TOC information, and voice data is recorded this area.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device or a reproducing device corresponding to a recording medium such as an optical disc or a magneto-optical disc.

[0002]

2. Description of the Related Art Optical discs and magneto-optical discs for recording audio signals as digital signals are widely used as reproducing devices capable of reproducing music, voice, etc., and are known as compact disc systems.

In particular, in recent years, a magneto-optical disk has been developed which is not only for reproduction but also for recording audio of music or the like by a user (so-called mini disk). The mini-disc system includes a magneto-optical disc that can be recorded / reproduced by a user as a recording medium, an optical disc (premastered type) in which a song or the like is recorded in advance with pit information and is exclusively for reproduction, and both of them. There are hybrid types. In order to distinguish the types, the premastered type discs are called premastered discs, the recordable / reproducible magneto-optical discs that can be recorded in all user areas are MO discs, and the hybrid type discs are hybrid discs. And

A recordable magneto-optical disk, namely M
For O discs and hybrid discs, in order to prevent accidental erasure, the user controls, for example, a slide operation to prohibit recording (recording prohibition piece; safety tab).
Is provided in the cartridge that stores the disc.

Further, in a premastered disc in which music or the like is recorded by pit data, a high reflectance type disc whose reproduction information can be detected by a reflectance almost similar to that of a CD during reproduction scanning by an optical head. There are a low reflection type and a low reflection type whose reflectance is almost the same as that of the MO disk. The pit data on the hybrid disc is usually of low reflectance type.

Therefore, in the case of the mini disc system, there are the following types of discs: high reflectance pre-mastered disc, low reflectance pre-mastered disc, MO disc, hybrid disc, and MO disc and hybrid disc. In, the disc state includes a recordable state and a record-inhibited state. Therefore, the loaded disc is classified into 6 types according to the type and state.

[0007]

By the way, when a certain disc is loaded in the mini-disc recording / reproducing apparatus, the user cannot determine which of these 6 types the disc is. This causes various inconveniences. For example, I performed a recording operation thinking that the loaded disc could be recorded, but in reality I could not record because a premastered disc was loaded, and in the case of air check etc. I miss the recording timing etc. Also occurs. In particular, there are times when there is no time to take out the disc once and check it when recording such that the timing cannot be missed, so that the type of disc loaded is always discriminated by the user. Is required to be prepared (loaded).

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to make it possible to indicate the type (type and state) of a disc.

For this reason, in a recording or reproducing apparatus capable of performing recording or reproducing operation corresponding to a plurality of types of disc-shaped recording media and having display means,
A discriminating means for discriminating the type and / or state of the loaded disc-shaped recording medium, and a display means according to the type and / or state of the loaded disc-shaped recording medium discriminated by the discriminating means. A display control means capable of executing a display capable of identifying the type and / or the state of the disc-shaped recording medium is provided.

Here, all or a part of the following detecting means is adopted as the determining means. Detection means for detecting the type or state of the disc-shaped recording medium based on the shape set for indicating the reflected light information of the disc-shaped recording medium in the cartridge containing the disc-shaped recording medium. Detection means for detecting the type or state of the disc-shaped recording medium based on the level of the read signal from the disc-shaped recording medium. Detection means for detecting the type or state of the disc-shaped recording medium based on the management information read from the disc-shaped recording medium. Detection that detects the type or state of the disc-shaped recording medium based on the state of the operation unit (safety tab) that can set whether or not the recording operation of the disc-shaped recording medium can be set in the cartridge containing the disc-shaped recording medium means.

[0011]

By displaying the type of the loaded disc on the basis of the information obtained by the discriminating means, the user's use is convenient.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A mini disk recording / reproducing apparatus will be described below as an embodiment of the present invention, and will be described in the following order. 1. Configuration of recording / reproducing device and disc 2. P-TOC sector 3. U-TOC sector 4. 4. Disc type discriminating process Display operation

FIG. 1 shows the appearance of a recording / reproducing apparatus and a corresponding recording medium (mini disk) according to an embodiment. Reference numeral 1 denotes an MO disk capable of recording, for example, music (audio data) as a recording medium of the mini disk system, and a magneto-optical disk is housed in a cartridge K and is rotated. And normally the shutter S
, The internal disk 1 is hidden from the surface of the cartridge K, but the cartridge K is inserted into the recording / reproducing apparatus 30 by the disk insertion portion 31.
When loaded from the inside, the shutter S is slid by an internal mechanism (not shown), and the recording surface of the internal disk 1 is exposed.

As the recording / reproducing device 30, various input / output means are prepared on the outer casing thereof. For example, an input terminal for voice signals and operation keys are provided as input means. The operation keys are a record key 51, a play key 52, and a pause key 5.
3, stop key 54, AMS key 55, search key 56,
Song name input mode key 57, disc name input mode key 5
8, a date input mode key 59, a ten-key pad 61, an enter key 62, etc. are provided for user operation. Each of the numeric keys of the ten-key pad 61 corresponds to three or two alphabets or spaces, which are used when inputting characters.

A display unit 20 for displaying various characters, numbers, images, etc. is also arranged on the upper surface of the housing. Display unit 2
At 0, the track number of the music being reproduced, the reproduction progress time, the operation mode, the clock information and the like, as well as the reproduced music title, the disc name and the like are displayed and output. For example, as shown in FIG. 2, a song title display TNA, a track number display TNO, a playback progress time display PT, and a symbol display MP showing playback as an operation mode.
Has been done. Further, in the case of this embodiment, a character display DT showing the type of the loaded disc is made. The character display DT will be described later.

As described above, there are four types of discs 1 loaded in the recording / reproducing apparatus 30, that is, a high reflectance premastered disc, a low reflectance premastered disc, an MO disc, and a hybrid disc.
The shape of the cartridge K at a predetermined position is set so that the type of reflectance can be determined. That is, in the case of the MO disc, the hybrid disc, and the pre-mastered disc having a low reflectance, as shown in FIGS.
As shown, a hole H ₂ is formed on the bottom surface side of the cartridge.
As can be seen from (a), no hole is provided at the position corresponding to this hole H ₂ . That is, the reflectance of the disc is identified by the presence or absence of the hole H ₂ .

Further, in the MO disc and the hybrid disc, as shown in FIG. 3, a safety tab TB is arranged on the side surface of the cartridge K so that the user can slide it. Then, according to the slide position of the safety tab TB, the cartridge K
The hole H ₁ provided on the bottom surface of the is opened and closed. When the hole H ₁ is opened, the recording and reproducing apparatus 30 is Yes so that they are not erased recorded data up to that being performed recording waiting erroneously determine the disk and recording prohibited state, the hole H ₁ is Recording will only be performed if it is closed. The pre-mastered disc is provided with a hole H ₁ corresponding to such an MO disc as shown in FIGS. 4A and 4B, but the safety tab for opening and closing the hole H ₁ is It is not provided, that is, it is always determined that the recording is prohibited.

FIG. 5 is a block diagram of an essential part of the recording / reproducing apparatus 30. As shown in FIG.
In 0, the disk 1 is loaded so as to be rotationally driven by the spindle motor 2. 3 is disk 1
Is an optical head that irradiates a laser beam at the time of recording / reproducing, provides a high level laser output for heating a recording track to the Curie temperature at the time of recording on an MO disk or a hybrid disk, and also by a magnetic Kerr effect during reproduction. It provides a relatively low level laser power for detecting data from reflected light. When the disc 1 is a premastered disc, the optical head 3 takes out the reproduction RF signal according to the change in the reflected light level depending on the presence or absence of pits, as in the case of the CD player, instead of the magnetic Kerr effect. Of course, the magnetic field recording operation is not performed on the optical disc.

In order to perform the data reading operation from the disk 1 as described above, the optical head 3 detects a laser diode as a laser output means, an optical system including a deflecting beam splitter and an objective lens, and reflected light. A detector is installed. The objective lens 3a is held by a biaxial mechanism 4 so as to be displaceable in the disc radial direction and the direction in which it comes in and out of contact with the disc, and the entire optical head 3 is movable by the sled mechanism 5 in the disc radial direction.

Reference numeral 6 denotes a magnetic head for applying a magnetic field modulated by the supplied data to the magneto-optical disk, and is arranged at a position facing the optical head 3 with the disk 1 in between.

The information detected from the disk 1 by the optical head 3 by the reproducing operation is supplied to the RF amplifier 7. The RF amplifier 7 processes the supplied information,
Extraction of reproduction RF signal, tracking error signal, focus error signal, absolute position information (absolute position information recorded as pregroove (wobbling groove) on magneto-optical disk 1), address information, subcode information, focus monitor signal, etc. To do. Then, the extracted reproduction RF signal is supplied to the encoder / decoder unit 8. Further, the tracking error signal TE and the focus error signal FE are supplied to the servo circuit 9. Further, the focus monitor signal is supplied to the system controller 11 configured by, for example, a microcomputer.

The servo circuit 9 generates various servo drive signals according to the supplied tracking error signal TE, focus error signal FE, track jump command, seek command, rotational speed detection information from the system controller 11, etc. 4 and the sled mechanism 5 are controlled to perform focus and tracking control, and the spindle motor 2 is controlled to have a constant angular velocity (CAV) or a constant linear velocity (CL).
V).

The reproduced RF signal is sent to the encoder / decoder unit 8
Then, the EFM demodulation and the decoding process such as CIRC are performed, and the data is temporarily written in the buffer RAM 13 by the memory controller 12. The reading of data from the magneto-optical disk 1 by the optical head 3 and the reproduction data transfer from the optical head 3 to the buffer RAM 13 are performed at 1.41 Mbit / sec (intermittently).

The data written in the buffer RAM 13 is read out at the timing when the reproduction data is transferred at 0.3 Mbit / sec, and is supplied to the encoder / decoder section 14. Then, a reproduction signal process such as a decoding process for the audio compression process is performed, an analog signal is formed by the D / A converter 15, and the analog signal is supplied from a terminal 16 to a predetermined amplification circuit section and reproduced and output. For example, it is output as L and R audio signals.

The absolute position information obtained by decoding the pre-groove information output from the address decoder 10 or the address information recorded as data is transmitted via the encoder / decoder unit 8 to the system controller 1
1 and is used for various control operations. further,
The lock detection signal of the PLL circuit that generates the bit clock for the recording / reproducing operation and the monitor signal of the missing state of the frame synchronization signal of the reproduction data (L and R channels) are also supplied to the system controller 11.

When a recording operation is performed on the disk (magneto-optical disk) 1, the recording signal (analog audio signal) supplied to the terminal 17 is converted into an A / D converter 18
After being converted into digital data by, the data is supplied to the encoder / decoder unit 14 and subjected to audio compression encoding processing. The recording data compressed by the encoder / decoder unit 14 is once written in the buffer RAM 13 by the memory controller 12, is also read at a predetermined timing, and is sent to the encoder / decoder unit 8. Then, the encoder / decoder unit 8 performs CIRC encoding, E
The data is supplied to the magnetic head drive circuit 15 after being encoded by FM modulation or the like.

The magnetic head drive circuit 15 supplies a magnetic head drive signal to the magnetic head 6 in accordance with the encoded recording data. That is, the N or S magnetic field is applied to the magneto-optical disk 1 by the magnetic head 6. Further, at this time, the system controller 11 supplies a control signal to the optical head 3 so as to output a laser beam of a recording level.

Reference numeral 19 denotes an operation input section provided with keys used for user operation, and 20 denotes a display section constituted by the above-mentioned liquid crystal display, for example. Operation input unit 19
1 corresponds to the various operation keys (recording key 51 to enter key 62) described above with reference to FIG.

Reference numeral 21 denotes a hole detecting section for detecting the holes H ₁ and H ₂ in the cartridge K of the disk 1 as described above. For example, by mechanical switching means corresponding to the position of the hole H _1, H ₂ is provided, at the time of disc loading, (open or closed by safety tab TB for hole H ₁₎ the presence or absence of holes H _1, H ₂ that When the switch is turned on / off, the reflectance type and the recording prohibition information by the holes H ₁ and H ₂ can be detected. Further, instead of a mechanical switch, for example, a light emitting unit and a light receiving unit may be arranged to detect the presence or absence of the holes H ₁ and H ₂ based on the reflected light information from the holes H ₁ and H ₂ . Information detected by the hole detection unit 21 is supplied to the system controller 11.

Various discs corresponding to the recording / reproducing apparatus of this embodiment are recorded with TOC information such as data for managing an area in which data such as music is already recorded or an unrecorded area according to the type. There is.

The system controller 11 drives the spindle motor 2 and the optical head 3 at the time when the disc 1 is loaded or immediately before the recording or reproducing operation, and is set to the innermost side of the disc 1, for example. T
Data in the OC area is extracted. The TOC information supplied to the memory controller 12 via the RF amplifier 7 and the encoder / decoder unit 8 is stored in the buffer RAM 13
And is used for controlling the recording / reproducing operation for the disc 1 thereafter. Therefore, the buffer AM13 is T
An area for holding OC information and an area for accumulating the voice data described above are set separately.

For example, when trying to record a certain piece of music on an MO disc, a user TOC (TOC information area rewritten according to recording or erasing of a voice signal, which is a part of TOC information, U-TOC), an unrecorded area on the disc can be searched for, and audio data can be recorded there. Further, at the time of reproduction, the area in which the music to be reproduced is recorded is discriminated from the TOC information, and that area is accessed for reproduction operation.

The U-TOC is edited and rewritten in response to recording and erasing of data, but the system controller 11 performs this editing process at each recording / erasing operation in the U-TOC stored in the buffer RAM 13. The TOC information is written and the U-TOC area of the disc 1 is rewritten at a predetermined timing according to the rewriting operation.

<2. P-TOC Sector> Now, as the audio data sector recorded in the sector data form on the disc 1, and the management information for managing the recording / reproducing operation of the audio data, the P-TOC sector will be described first. The P-TOC is provided in all of the above four types of discs. As the P-TOC information, area designation such as a recordable area (recordable user area) of the disc and management of the U-TOC area are performed. If the disc 1 is a premastered disc that is a read-only optical disc, P-
It is also possible to manage the music recorded in the ROM by the TOC and recorded.

The format of the P-TOC is shown in FIG.
FIG. 6 shows P-recorded repeatedly in an area for P-TOC (for example, a ROM area on the innermost side of the disc).
One sector (sector 0) of TOC information is shown. The P-TOC format is an option after sector 1.

The data area of the sector of P-TOC (4 bytes x 588, 2352 bytes) has all 0s at the head position.
Alternatively, 4 bytes of a synchronization pattern formed of 1-byte data of all 1s, an address indicating a cluster address and a sector address, etc. are added, and the above is used as a header to indicate that it is a P-TOC area.

Further, following the header, an identification ID by an ASCII code corresponding to the character "MINI" is added at a predetermined address position. In addition, the disc type (Disc type), recording level (Rec power), song number of the first song recorded (First TNO), song number of the last song (Last TNO), lead-out start address RO
_A , Power Cal Area Start Address PC _A , U-
Start address UST _{A of} TOC (data area of U-TOC sector 0 in FIG. 8 described later), start address R of recordable area (recordable user area)
ST _A etc. are recorded.

1-byte disc type
Is the disc a pre-mastered disc,
This is information indicating whether it is a MO disc or a hybrid disc. For example, the value of the disc type (Disc type) is “3Dh” in the premastered disc, and the disc type (Disc type) =
"3Eh", hybrid disc type
(Disc type) = "3Fh". (Note that in this specification, the numerical value with “h” is so-called hexadecimal notation.)

Following these pieces of information, table pointers (P-TNO1 to P-TNO255) that associate recorded music pieces with a parts table in a management table section described later.
A correspondence table instruction data section having is prepared.

Then, in the area following the correspondence table instruction data portion, (01h) to (FF) are associated with the table pointers (P-TNO1 to P-TNO255) in the correspondence table instruction data portion.
A management table section is prepared, which has 255 parts tables up to h). Each part table can record a start address as a starting point, an end address as an ending point, and mode information (track mode) of the segment (track) for a certain segment.

The mode information of the track in each parts table is information as to whether the segment is set to, for example, overwrite inhibition or data copy inhibition,
Whether or not it is audio information, monaural / stereo type, etc. are recorded.

In each parts table from (01h) to (FFh) in the management table section, the contents of the segment are indicated by the table pointers (P-TNO1 to P-TNO255) in the corresponding table instruction data section. That is, for the first piece of music, a certain parts table (for example, (01h) is used as the table pointer P-TNO1. However, the table pointer is actually the byte position in the P-TOC sector 0 by the predetermined arithmetic processing. Is recorded), in which case the start address of the parts table (01h) is the start address of the recording position of the first piece of music, and similarly the end address is The end address is the position where the first piece of music is recorded. Further, the track mode information becomes information about the first music piece.

Similarly, for the second music piece, the parts table indicated by the table pointer P-TNO2 (eg (02h))
The start address, end address, and track mode information of the recording position of the second tune are recorded in. Similarly, since the table pointers up to P-TNO255 are prepared, it is possible to manage up to the 255th song on the P-TOC. Then, by forming the P-TOC sector 0 in this way, a predetermined music piece can be accessed and reproduced, for example, during reproduction.

In the case of a recordable / reproducible MO disc, since there is no so-called pre-mastered music area, the above-mentioned correspondence table instruction data portion and management table portion are not used (these are U-TOC which will be described subsequently).
Therefore, each byte is all “00h”. However, regarding the premastered disc in which all the songs are recorded in the ROM form (pit form) and the hybrid disc having both the ROM area and the magneto-optical area as the area in which the songs and the like are recorded,
The correspondence table instruction data section and the management table section are used to manage the music in the ROM area.

<3. U-TOC sector> followed by UT
The OC will be explained. FIG. 7 shows a format of one sector (sector 0) of the U-TOC, and mainly records management information about a song recorded by the user and an unrecorded area (free area) in which a new song can be recorded. Data area. The U-TOC is also an option after sector 1. This U-TOC is not provided in the premastered disc, but is provided in the MO disc and the hybrid disc.

For example, when trying to record a certain piece of music on an MO disc, the system controller 11 uses the U
-A free area on the disc can be searched from the TOC and audio data can be recorded there. Further, at the time of reproduction, the area in which the music to be reproduced is recorded is discriminated from the U-TOC, and that area is accessed to perform the reproduction operation.

As in the P-TOC, the U-TOC sector (sector 0) shown in FIG. 7 is first provided with a header, and then, at a predetermined address position, a manufacturer code, a model code, and a song number of the first music piece. (First TNO), song number (Last TNO) of the last song, sector usage, disc serial number, disc ID, and other data are recorded. Various table pointers (P-DFA, P-EMPTY, P-
An area for recording FRA, P-TNO1 to P-TNO255) is prepared.

Then, 255 parts tables of (01h) to (FFh) are provided as management table parts to be associated with the table pointers (P-DFA to P-TNO255) of the corresponding table instruction data part, respectively. 6, the start address as the starting point, the end address as the ending point, and the mode information (track mode) of the segment are recorded in the same manner as the P-TOC sector 0 in FIG. This U-TO
In the case of C sector 0, the segment shown in each parts table may be connected to another segment subsequently, so link information indicating the parts table in which the start address and end address of the connected segment are recorded. Can be recorded.

In this type of recording / reproducing apparatus, the reproduction operation is disturbed by physically reproducing the data of one music piece, that is, even if the data is recorded over a plurality of segments, the reproduction is performed while accessing between the segments. Not because
The music or the like recorded by the user may be recorded in a plurality of segments for the purpose of efficiently using the recordable area. (In this specification, the segment means a track portion in which continuous data is physically continuously recorded.) Therefore,
Link information is provided, for example, by the numbers (01h) to (FFh) given to each parts table (actually indicated by a numerical value that is a byte position in the U-TOC sector 0 by a predetermined arithmetic process), The parts tables can be connected by specifying the parts table to be connected. Incidentally, since the music recorded in advance in the pit form is not usually segmented, the link information is all "(00h)" in the P-TOC sector 0 as shown in FIG.

That is, in the management table section in the U-TOC sector 0, one part table represents one segment, and, for example, a music piece formed by connecting three segments is linked by link information. The segment position is managed by the three parts tables.

Each of the parts tables (01h) to (FFh) in the management table section of the U-TOC sector 0 has a table pointer (P-DF) in the corresponding table instruction data section.
A, P-EMPTY, P-FRA, P-TNO1 to P-TNO255)
The contents of that segment are shown below.

The table pointer P-DFA is shown for a defective area on the magneto-optical disk 1, and a track portion (= segment) which is a defective area due to a scratch or the like is shown.
One part table or the first part table in multiple part tables is specified. In other words, if there is a defective segment in the table pointer P-DFA
Any one of (01h) to (FFh) is recorded, and the defective segment is indicated by the start and end addresses in the parts table corresponding thereto. Further, when there is another defective segment, another part table is designated as the link information in the part table, and the defective segment is also shown in the part table. Then, if there is no other defective segment, the link information is, for example, "(00h)", and thereafter there is no link.

The table pointer P-EMPTY indicates the top parts table of one or a plurality of unused parts tables in the management table section. If an unused parts table exists, the table pointer P-EMPTY is used as a table pointer P-EMPTY. , (01h) to (FFh) is recorded.
If there are multiple unused part tables, the part tables specified by the table pointer P-EMPTY are used to sequentially specify the part tables by link information, and all the unused part tables are linked on the management table section. To be done.

The table pointer P-FRA indicates the writable free area (including the erased area) of the data on the magneto-optical disk 1, and 1 or the track portion (= segment) which becomes the free area is indicated. The first part table in multiple part tables is specified. In other words, if there is a free area, the table pointer P-
In the FRA, any one of (01h) to (FFh) is recorded, and in the parts table corresponding to that, the segment which is the free area is indicated by the start and end addresses. Further, when there are a plurality of such segments, that is, when there are a plurality of parts tables, the parts table with link information of "(00h)" is sequentially specified by the link information.

FIG. 8 schematically shows the management state of the free area segment with the parts table. This is the correspondence table instruction data when segment (03h) (18h) (1Fh) (2Bh) (E3h) is set as free area.
Continuing from P-FRA, parts table (03h) (18h) (1Fh) (2Bh)
The state represented by the link (E3h) is shown. The defective area and the unused parts table management mode described above are the same.

By the way, in the case of a magneto-optical disk in which no audio data such as music is recorded and there is no defect,
Parts table (01h) by table pointer P-FRA
Is designated, which indicates that the entire recordable user area of the disc is an unrecorded area (free area). And it remains in this case (02h) ~ (FFh)
Since the parts table of will not be used,
The part table (02h) is specified by the above-mentioned table pointer P-EMPTY, the part table (03h) is specified as the link information of the part table (02h), and the part table is specified as the link information of the part table (03h).
(04h) is specified, and so on.Parts table (FFh)
Are linked up to. In this case, the link information of the parts table (FFh) is set to "(00h)" indicating that there is no connection thereafter. At this time, in the parts table (01h), the start address of the recordable user area is recorded as the start address, and the address immediately before the lead-out start address is recorded as the end address.

Table pointers P-TNO1 to P-TNO255 indicate music pieces recorded by the user on the magneto-optical disk 1. For example, in the table pointer P-TNO1, one or a plurality of pieces of data in which the first music piece is recorded are recorded. A parts table indicating the temporally first segment of the segments is specified.

For example, the first music piece is not divided into tracks on the disc (that is, one segment).
When recorded, the recording area of the first music piece is recorded as the start and end addresses in the parts table indicated by the table pointer P-TNO1.

Further, for example, when the second music piece is discretely recorded in a plurality of segments on the disc, each segment is designated in chronological order to indicate the recording position of the music piece. In other words, from the parts table specified by the table pointer P-TNO2, further parts tables are sequentially specified by the link information according to the temporal order, and the parts table whose link information is "(00h)" is linked. (The above-mentioned form similar to FIG. 8). Thus, for example, all the segments in which the data constituting the second music is recorded are sequentially designated and recorded, so that the data of the U-TOC sector 0 is used to reproduce the second music or the second music. When overwriting the area (1), it becomes possible to access the optical head 3 and the magnetic head 6 to take out continuous music information from discrete segments, and to perform recording using the recording area efficiently.

As described above, the area management on the disk is P
-Music recorded by the TOC and recorded in the recordable user area, free areas, etc.
Performed by OC.

<4. Disc Type Discrimination Processing> In the recording / reproducing apparatus of this embodiment, when disc 1 is loaded, in order to discriminate its type and state (recordability),
The system controller 11 will perform the processing of FIG. First, when the disc 1 is loaded, the system controller 11 determines whether or not the hole H ₂ indicating the reflectance is formed in the cartridge K based on the detection signal from the hole detection unit 21.

Here, if the presence of the hole H ₂ is not detected, the process proceeds to step F105, that is, it is determined that the loaded disc is a high-reflectance premastered disc. When the presence of the hole H ₂ is detected, subsequently, the information from the hole detection unit 21 regarding the hole H ₁ is confirmed. That is, it is determined whether or not recording is prohibited by the safety tab TB (F102). Here, if the hole H ₁ is opened by the safety tab TB, that is, if the write protection is turned on, the process proceeds to step F103. Since the hole H ₁ is also detected in the case of the low reflectance premastered disc, it is regarded as in the write protect ON state and the process proceeds to step F103.

That is, the case of proceeding to step F103 means whether the loaded disc is a low reflectance premastered disc, an MO disc for which recording is prohibited, or a hybrid disc for which recording is prohibited. In either case.

Therefore, in step F103, of the TOC information read from the loaded disc and held in the buffer RAM 13, the disc type (Disc type) in the P-TOC sector 0 is referred to. The disc type is, for example, “3D” as described above.
"h""3Eh""3Fh" is written,
If it is "3Dh", the process proceeds to step F106 and it is determined that the disc is a low reflectance premastered disc. See also "3E
If it is "h", it is discriminated as an MO disc for which recording is prohibited (F107), and if it is "3Fh", it is discriminated as a hybrid disc for which recording is prohibited (F108).

On the other hand, when it is detected in step F102 that the hole H ₁ is closed, the process proceeds to step F104 and P-
Disc type in TOC sector 0
Refer to. The case of proceeding to step F104 is a case where the loaded disc is a recordable MO disc or a recordable hybrid disc.
Therefore, refer to “Disc type” and refer to “3
If it is "Eh", it is discriminated that it is a recordable MO disc (F109), and if it is "3Fh", it is discriminated that it is a recordable hybrid disc (F110).

Through the above processing, the system controller 1
1 can discriminate between 6 types of loaded discs according to 4 types and recording enable / disable states. The reflectance may be detected based on the presence or absence of the hole H ₂ , or the level of the reflected light from the disk recording surface may be detected to determine the level of the reflectance.

<5. Display Operation> In this way, the system controller 11 makes a determination as to which of the six types the loaded disc is, and then the character display DT indicating the disc type on the display unit 20.
Will be executed according to the discrimination information.

When the loaded disc is a high-reflectance premastered disc, the disc type display D
As T, the display as shown in FIG. 10 is performed. Figure 10
FIG. 10A shows a display at the time of stop, and when the reproduction is started, the display is shown in FIG. 10B for each period of about 1 second, for example.
(C) → (d) → (b) ... In other words, the design of the disc displayed at the time of stop is such that it is rotated at the time of reproduction.

Further, in the case of fast-forward reproduction (FF), the change of the display of FIG. 10 (b) → (c) → (d) → (b) ... Is shortened (for example, about 0.5 seconds). This is done every time, that is, the display as if the disc is rotating fast. Further, in the case of fast reverse reproduction (REW), for example, as shown by a broken line in FIG.
The display is changed in the order of (d) → (c) → (b) and so on, and the display is executed so that the image of the disc design is reversely rotated at high speed.

When the loaded disc is a low reflectivity premastered disc, the disc type display D
As T, the display as shown in FIG. 11 is performed. Figure 11
(A) shows the display at the time of stop, and unlike the above-mentioned FIG. 10 (a), it has a design with a circle added to the inner circumference. Then, when the reproduction is started, the display is changed, for example, at intervals of about 1 second as shown in FIG. 11 (b) → (c) → (d) → (b) ... ) The display of the disk is rotated.

In the case of fast-forward reproduction (FF), as in the case of FIG. 10, FIG. 11 (b) → (c) → (d) →
(B) ... The display changes every short period so that the image of the rotation of the disk can be seen at high speed.
In the case of fast reverse reproduction (REW), as shown by the broken line in the figure, the display is changed every short period as shown in FIG. 10 (b) → (d) → (c) → (b). The display is executed so that the image of the disk design is rotated at a high speed.

M in which the loaded disc is not recordable
If the disc is an O disc, the disc type display DT is displayed as shown in FIG. Figure 12 (a)
Indicates a display at the time of stop, and the display shown in FIG.
The design is different from (a). When the reproduction is started, the display is changed, for example, at intervals of about 1 second as shown in FIG. 11 (b) → (c) → (d) → (b) ... ) The display of the disk is rotated. In the case of fast-forward reproduction (FF), switching of FIG. 12 (b) → (c) → (d) → (b) ... Indicates a broken line in FIG. 12 (b) → (d) → (c) → (b).
.. The display is changed every short period.

M in which the loaded disc is recordable
If the disc is an O disc, the disc type display DT is displayed as shown in FIG. FIG. 13 (a)
Indicates a display at the time of stop, and has a different design from the case of FIGS. Then, when reproduction (or recording) is started, the display is changed, for example, at intervals of about 1 second as shown in FIG. 13 (b) → (c) → (d) → (b). The display of the disc design shown in FIG. 13A is rotated. In the case of fast forward reproduction (FF), switching of FIG. 13 (b) → (c) → (d) → (b) ... Is a broken line in FIG. 13 (b) → (d) → (c) →
(B) ... The display is changed every short period.

When the loaded disc is a hybrid disc in which recording is not possible, a disc type display DT is displayed as shown in FIG. Figure 1
4 (a) shows a display at the time of stop. This is the same as the design itself in FIG. 12 (a) above, but "HY" is displayed at the bottom.
The characters "BRID" are simultaneously displayed. Then, when the reproduction is started, the display is changed as shown in FIG. 14 (b) → (c) →
(D) → (b) ... is changed to display such that the disc design of FIG. 14 (a) is rotated. Further, in the case of fast-forward reproduction (FF), FIG.
In the case of fast-reverse playback (REW), the switching display for each short period of (c) → (d) → (b) ...
(B)->(d)->(c)-> (b) ... Switching display is performed for each short period.

When the loaded disc is a recordable hybrid disc, the disc type display DT is displayed as shown in FIG. Figure 1
5 (a) shows a display at the time of stop, the design itself is the same as that of FIG. 13 (a), but "HYBRI"
The letter "D" is displayed at the same time. Then, when reproduction (or recording) is started, the display is changed as shown in FIG.
Change from (c) → (d) → (b) ...
It is displayed such that the disc design of (a) is rotated. In the case of fast forward reproduction (FF), FIG.
(B) → (c) → (d) → (b) ... Switching display for each short period, in the case of fast reverse reproduction (REW), FIG. ) → (c) → (b) ... Switching display is performed for each short period.

As described above, since the character display DT is different corresponding to the six types, it is possible to determine which type of disc is loaded without the user having to take out the disc at the time of stopping or playing. I can know. Therefore, it is possible to confirm whether or not recording is possible, which is convenient for recording operation. In particular, in the case of this display example, in the case of a recordable MO disk or a hybrid disk, the outer circumference of the display design of the disk becomes a double circle, which is easily distinguished from other cases where recording is impossible (single circle). It is possible and preferable.

In the above example, the hybrid disc is designed to have the characters "HYBRID" added to the MO disc design, but a hybrid disc-specific design may be used. For example, a hybrid disc that cannot be recorded as shown in FIG. 16 has a single circle surrounded by a broken line, and a hybrid disc that is recordable as shown in FIG. 17 has a double circle surrounded by a solid line and a broken line. Can be considered.

Regarding the hybrid disc,
12 or 13 (b) to (d) is displayed while the reproducing operation is performed in the magneto-optical area, and the character "HYBRID" is added when the reproducing operation is performed in the pit area. It is conceivable that the display or the display shown in FIGS. 16B to 16D is performed.

Of course, examples of display characters are not limited to those shown in FIGS. 10 to 17, and various other examples are possible. Further, when various types can be applied as the disc type and the state, the display design may be set according to them.

In the embodiment, the recording / reproducing apparatus is taken as an example, but the present invention can be realized by a recording-dedicated apparatus and a reproduction-dedicated apparatus. Further, the present invention is not limited to the recording / reproducing apparatus as a so-called mini disk system, but can be realized by an apparatus using a disk of another kind as a recording medium.

[0081]

As described above, according to the present invention, the discriminating means discriminates the type / state of the loaded disc, and the display control means discriminates the disc type / state according to the disc type / state. Since it is configured so that the disc can be displayed, the user can know the type of the loaded disc and the recording enabled / disabled state without removing the disc from the device. For example, the recording operation can be performed with the unrecordable disc loaded. There is an effect that it is very convenient to use, such as being able to prevent things from being performed.

[Brief description of drawings]

FIG. 1 is a plan view of a recording / reproducing device and a disc according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram of a display unit of the recording / reproducing apparatus of the embodiment.

FIG. 3 is an explanatory diagram of cartridges for MO discs and hybrid discs.

FIG. 4 is an explanatory diagram of a cartridge of a premastered disc.

FIG. 5 is a block diagram of a main part of the recording / reproducing apparatus of the embodiment.

FIG. 6 is an explanatory diagram of P-TOC sectors on a disc.

FIG. 7 is an explanatory diagram of a U-TOC sector on the disc.

FIG. 8 is an explanatory diagram of a link structure of U-TOC sectors in the disc.

FIG. 9 is a flowchart of a disc type determination process according to the embodiment.

FIG. 10 is an explanatory diagram of a display operation when the high reflectance pre-mastered disc of the embodiment is loaded.

FIG. 11 is an explanatory diagram of a display operation when a low reflectance pre-mastered disc according to the embodiment is loaded.

FIG. 12 is an explanatory diagram of a display operation when an unrecordable MO disc is loaded in the embodiment.

FIG. 13 is an explanatory diagram of a display operation when a recordable MO disc according to the embodiment is loaded.

FIG. 14 is an explanatory diagram of a display operation when a non-recordable hybrid disc is loaded in the embodiment.

FIG. 15 is an explanatory diagram of a display operation when a recordable hybrid disc is loaded according to the embodiment.

FIG. 16 is an explanatory diagram of another display operation at the time of loading the non-recordable hybrid disc according to the embodiment.

FIG. 17 is an explanatory diagram of another display operation when the recordable hybrid disc according to the embodiment is loaded.

[Explanation of symbols]

 1 disk 3 optical head 8 encoder / decoder section 11 system controller 12 memory controller 13 buffer RAM 14 encoder / decoder section 19 key input section 20 display section 21 hole detection section 30 recording / reproducing apparatus body DT disk type display

Claims (5)

[Claims] 1. In a recording or reproducing apparatus capable of performing a recording or reproducing operation corresponding to a plurality of types of disk-shaped recording media and having a display means, the type and / or of the loaded disk-shaped recording medium. A discriminating means for discriminating the state, and a discriminating means for discriminating the disc-shaped recording medium on the display means according to the type and / or the state of the loaded disc-shaped recording medium determined by the discriminating means
Alternatively, the recording or reproducing apparatus is provided with a display control means capable of executing a display capable of identifying the state. 2. The disc-shaped recording based on a shape set for indicating reflected light information of the disc-shaped recording medium in a cartridge storing the disc-shaped recording medium as a part or all of the discriminating means. The recording or reproducing apparatus according to claim 1, further comprising detection means for detecting the type or state of the medium. 3. A part or all of the judging means, based on the level of a read signal from a disk-shaped recording medium,
The recording or reproducing apparatus according to claim 1, further comprising detection means for detecting the type or state of the disc-shaped recording medium. 4. A detection unit for detecting the type or state of the disc-shaped recording medium based on the management information read from the disc-shaped recording medium is provided as a part or all of the discriminating unit. The recording or reproducing apparatus according to claim 1, characterized in that. 5. The disc as a part or all of the discriminating means, based on the state of an operation unit capable of setting whether or not a recording operation of the disc-shaped recording medium is possible in a cartridge accommodating the disc-shaped recording medium. The recording or reproducing apparatus according to claim 1, further comprising detection means for detecting the type or state of the recording medium.