JP3550769B2 - Recording device and playback device - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a recording device and a reproduction / reproduction device for a recording medium for recording / reproducing audio data and the like.
[0002]
[Prior art]
2. Description of the Related Art Recording media on which a user can record music data and the like, such as a mini-disk system using a magneto-optical disk, have become widespread.
In this data rewritable mini-disc system, an area for recording P-TOC (pre-mastered TOC) and U-TOC (user TOC) as management information is provided at an inner peripheral position of the disc.
The P-TOC records the basic area configuration on the disc, and the U-TOC records the address of each recorded track and the address of an unrecorded area (free area), as well as track recording date and time information and character information. It is configured to be. The user TOC is rewritten according to a recording or editing operation.
[0003]
For example, when recording a certain piece of music with a mini-disc recording device, the recording device searches for a free area on the disc from the U-TOC, and records audio data to be a track there. In the reproducing apparatus, the area in which the music (track) to be reproduced is recorded is determined from the U-TOC, and the reproduction operation is performed by accessing the area. Further, when erasing a track, the track is executed by incorporating the track into a free area on the U-TOC. Further, division, connection, and the like of a track are realized by changing the address of the corresponding track on the U-TOC.
[0004]
Further, a track name, a recording date and time, and the like can be recorded as data associated with each track, and various operations such as displaying the name of the recorded track and the recording date and time can be realized.
[0005]
[Problems to be solved by the invention]
By the way, when music or the like is reproduced by a mini-disc system or the like, particularly when it is used for business use, various controls may be required along with the reproduction operation. For example, when the reproduction of a certain song ends in 10 seconds, the end of the reproduction is approaching (EOM; end of message), the reproduction operation is started by fade-in, or the reproduction operation is started. In many cases, it is desired to perform control to end the program by fading out. There is a situation in these operations that it is desired to strictly control the control timing to some extent in a broadcasting business or the like.
[0006]
Conventionally, in order to execute an EOM operation for displaying that the end of the music is nearing the end, time information serving as the EOM timing is stored in advance in a memory in the playback device. For example, the EOM timing is stored as 10 seconds.
Then, from the point in time when the reproduction operation of each music (track) has been completed for 10 seconds until the end, a predetermined display is presented on the display unit to indicate that it is about to end. The user can prepare for the reproduction of the next song or measure the start timing of the next program according to this display. If there is another device linked to the system, for example, the EOM information can be output as a trigger for starting a reproduction operation of another reproduction device.
[0007]
However, in actual use, it is preferable that the EOM information can be set at different timings according to each track to be reproduced and the next program. For example, it is often convenient that the first song can be set in units of tracks such that the EOM is presented 10 seconds ago and the second song is presented 20 seconds ago. However, in order to realize this, a memory for storing the EOM timing for each track is required in a reproducing apparatus or the like. In particular, when a large number of songs are to be reproduced in a broadcasting operation or the like, an enormous memory space is required, and there is a problem that realization is difficult.
The same applies to not only the EOM function but also timing control such as fade-in / fade-out of music, and control such as equalizing, and it is difficult to change these settings for each track.
[0008]
[Means for Solving the Problems]
The present invention has been made in view of such a problem, and an object of the present invention is to enable setting of various operation controls at the time of reproduction in track units.
[0009]
For this reason, audio information in which one unit is formed as one track is recorded, and as management information, a recording medium provided with a character recording area in which character information can be recorded corresponding to each track is prepared. As a corresponding recording device, a recording unit capable of writing information corresponding to a recording medium and a character recording control unit are provided.
The character recording control means can record the character information corresponding to the track in the character recording area of the recording medium by the recording means in response to the character input operation. Further, in response to an operation of a predetermined operation means, specific control character information for executing a predetermined operation at the time of reproduction of the track is generated, and if necessary, a predetermined delimiter code is used to discriminate it from arbitrary character information. It can be recorded in a character recording area in a state where it is set.
[0010]
here , The control character information is control character information for performing an operation of presenting that the reproduction operation has reached a point in time when the remaining time until the reproduction of the track has reached n when the track is reproduced. It is assumed that a character that specifies the value of the quantity n is included.
[0011]
The control character information is control character information for executing a fade-in operation at the start of reproduction or a fade-out operation at the end of reproduction during reproduction of the track, and has a fade-in operation period or a fade-out operation period. Is assumed to be included.
[0012]
Next, on a recording medium in which audio information in which one unit is formed as one track is recorded and a character recording area in which character information can be recorded corresponding to each track is prepared as management information. As a corresponding playback device, a playback unit that can read information from a recording medium and a playback control unit are provided.
When a reproducing operation of a certain track is performed by the reproducing unit, the reproducing control unit reads character information corresponding to the track from a character recording area of the recording medium, and stores a predetermined control character in the read character information. If the information is included, an operation control according to the control character information can be executed as an operation relating to the reproduction operation of the track.
[0013]
Here, presentation means for presenting and outputting the information is provided, and the reproduction control means sets the control character information included in the character information to the remaining time amount until the reproduction operation ends at the time of reproduction of the track when the track is reproduced. If the character information is control character information for executing an operation of presenting that the time has been reached, the presenting means executes the required presentation operation from the time when the track reproduction operation has progressed to the state of the remaining time amount n. Configure to be able to.
[0014]
Further, fader means capable of performing fade output for audio data output is provided, and the reproduction control means performs a fade-in operation at the start of reproduction or a reproduction operation when the control character information included in the character information is reproduced. If the control character information is for performing a fade-out operation at the time of termination, the fader means can be configured to execute a fade-in operation or a fade-out operation during a period specified by the control character information.
[0015]
[Action]
If an area is provided on the recording medium on which characters corresponding to each track can be recorded, information for control necessary during playback operation is used for each track using the character recording area. Can be recorded individually.
That is, by setting specific characters as control information for the EOM function, fade-in / fade-out, and the like, it is possible to variably set the control operations of these for each track.
[0016]
【Example】
Hereinafter, a magneto-optical disk (mini-disk) recording / reproducing apparatus will be described as an embodiment of the present invention with reference to FIGS.
1. Configuration of recording / playback device
2. P-TOC sector
3. U-TOC sector
・ U-TOC sector 0
・ U-TOC sector 1
4. EOM control operation
5. Fade-in / fade-out control operation
6. Other various control operations
[0017]
1. Configuration of recording / playback device
FIG. 1 shows a block diagram of a main part of the recording / reproducing apparatus.
In FIG. 1, reference numeral 1 denotes, for example, a magneto-optical disk on which audio data tracks are recorded.
The audio data of music and the like recorded on the disk 1 is compressed by digital DCT (Modified Discrete Cosine Transform) compression technology to approximately 1/5 digital data obtained by 16-bit quantization at 44.1 KHz sampling, and further EFM modulation and The data is CIRC-encoded data.
[0018]
The magneto-optical disk 1 is driven to rotate by a spindle motor 2. Reference numeral 3 denotes an optical head for irradiating the magneto-optical disk 1 with a laser beam during recording / reproducing, which produces a high-level laser output for heating a recording track to the Curie temperature during recording, and uses a magnetic Kerr effect during reproduction. A relatively low level laser output for detecting data from the reflected light.
Therefore, the optical head 3 is equipped with a laser diode as a laser output unit, an optical system including a deflection beam splitter and an objective lens, and a detector for detecting reflected light. The objective lens 3a is held by a biaxial mechanism 4 so as to be displaceable in a radial direction of the disk and in a direction of coming and coming from the disk.
[0019]
Reference numeral 6a 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 magneto-optical disk 1 interposed therebetween. The entire optical head 3 and the magnetic head 6a can be moved in the disk radial direction by the thread mechanism 5.
[0020]
Information detected from the magneto-optical disk 1 by the optical head 3 by the reproducing operation is supplied to the RF amplifier 7. The RF amplifier 7 computes the reproduced RF signal, tracking error signal, focus error signal, groove information (absolute position information recorded as a pre-groove (wobbling groove) on the magneto-optical disk 1) and the like by performing an arithmetic process on the supplied information. Extract. Then, the extracted reproduction RF signal is supplied to the encoder / decoder unit 8. Further, the tracking error signal and the focus error signal are supplied to the servo circuit 9.
The groove information in which the absolute position information is FM-modulated and recorded is supplied to the address decoder 10, subjected to demodulation and decoding processing, converted into absolute position information, and supplied to the system controller 11.
Further, address information recorded as data detected by the encoder / decoder unit 8 and subcode data used for control operations are supplied to the system controller 11 and used for various control operations.
The system controller 11 includes a microcomputer for controlling various operations such as recording / reproduction / editing. Reference numeral 11a denotes a RAM in the system controller 11, which is constituted by, for example, an S-RAM.
[0021]
The servo circuit 9 generates various servo drive signals based on the supplied tracking error signal, focus error signal, track jump command and access command from the system controller 11, rotation speed detection information of the spindle motor 2, and the like. Further, the focus and tracking control is performed by controlling the sled mechanism 5, and the spindle motor 2 is controlled at a constant linear velocity (CLV).
[0022]
The reproduced RF signal is subjected to EFM demodulation and decoding processing such as CIRC in the encoder / decoder section 8 and then written once by the memory controller 12 to the buffer RAM 13 formed by a D-RAM. The reading of data from the magneto-optical disk 1 by the optical head 3 and the transfer of reproduced data in the system from the optical head 3 to the buffer RAM 13 are performed at 1.41 Mbit / sec and intermittently.
[0023]
The data written in the buffer RAM 13 is read out at a timing when the transfer of the reproduction data becomes 0.3 Mbit / sec, and is supplied to the encoder / decoder unit 14. Then, the digital signal is converted into a 16-bit quantized output digital signal by a decoding process for the audio compression process by the modified DCT process.
[0024]
The output digital signal is supplied to an audio processing unit 15 formed by, for example, a DSP (Digital Signal Processor), and is subjected to various acoustic processing. In the audio processing unit 15, volume control processing, attenuation processing, fade-in processing for gradually increasing the audio output level, fade-out processing for gradually decreasing the audio output level, and equalizing processing are performed by coefficient control from the system controller 11. Etc. are made possible. Further, sound processing such as delay processing, reverb processing, and compressor processing may be enabled.
[0025]
The output digital signal processed by the audio processing unit 15 is converted into an analog signal by the D / A converter 16 and supplied to the terminal 17out. The signal is supplied from a terminal 17out to a headphone, a line output terminal, and the like via a predetermined circuit unit. Note that the audio processing unit 15 may be formed by an analog signal processing circuit, and in that case, is disposed downstream of the D / A converter 16.
[0026]
When a recording operation is performed on the magneto-optical disk 1, the analog audio signal input from the input terminal 17in is converted into 44,1 KHz sampling and 16-bit quantized digital data by the A / D converter 18. After that, it is supplied to the encoder / decoder unit 14.
[0027]
The encoder / decoder 14 performs audio compression encoding by a modified DCT process on the input digital audio signal. The recording data compressed by the encoder / decoder section 14 is temporarily written into the buffer RAM 13 by the memory controller 12, read out at a predetermined timing, and sent to the encoder / decoder section 8. After being subjected to encoding processing such as CIRC encoding and EFM modulation by the encoder / decoder section 8, the encoded data is supplied to the magnetic head drive circuit 6.
[0028]
The magnetic head drive circuit 6 supplies a magnetic head drive signal to the magnetic head 6a according to the encoded recording data. That is, the magnetic head 6a applies an N or S magnetic field to the magneto-optical disk 1. At this time, the system controller 11 supplies a control signal to the optical head so as to output a recording level laser beam.
[0029]
Reference numeral 19 denotes an operation unit provided with keys used for user operations, and includes a reproduction key, a search key, an AMS key, a stop key, a recording key, and the like. Also, keys for editing operations are provided, and various editing operations are performed. The editing operation includes, for example, character input editing corresponding to a track or a disc, erasing of a track, and division / connection of a track. These edits are realized by a U-TOC update process described later.
Reference numeral 20 denotes a display unit, which displays operating conditions during reproduction and recording, a track number during reproduction / recording, a progress time, a mode state, character information corresponding to the track, and the like according to the control of the system controller 11.
[0030]
When performing the recording / reproducing operation on the disk 1, the management information recorded on the disk 1, that is, the P-TOC and the U-TOC are read and read and held in the buffer RAM 13. For example, this reading is performed when a disc is loaded. For this reason, in the buffer RAM 13, the buffer area for the recording data / reproduction data and the area for holding the management information are divided and set.
The system controller 11 determines the recordable area on the disk 1 and the address of the track to be reproduced according to the management information read into the buffer RAM 13 and performs various controls.
[0031]
The U-TOC is edited and rewritten in accordance with recording or erasing of data. The system controller 11 performs this editing process on the U-TOC information stored in the buffer RAM 13 every time a recording / erasing operation is performed. The U-TOC on the buffer RAM 13 is recorded in the U-TOC area of the disk 1 at a predetermined timing.
[0032]
2. P-TOC sector
Here, the P-TOC sector will be described first as management information for managing the recording / reproducing operation of the track on the disk 1.
As the P-TOC information, designation of an area such as a recordable area (recordable user area) of the disc, management of the U-TOC area, and the like are performed. When the disc 1 is a pre-mastered disc which is a read-only optical disc, it is possible to manage music recorded in a ROM by the P-TOC.
[0033]
FIG. 7 shows one sector (sector 0) of P-TOC information repeatedly recorded in an area used for P-TOC (for example, a ROM area on the innermost side of the disk). The P-TOC sector exists from sector 0 to sector 4, but is optional from sector 1.
[0034]
In the data area of P-TOC sector 0 (4 bytes x 588, 2352 bytes), a synchronization pattern consisting of all 0 or all 1 byte data is added at the head position, and an address indicating a cluster address and a sector address is added by 4 bytes. The above is the header.
After the header, an identification ID in ASCII code corresponding to the character "MINI" is added at a predetermined address position, thereby indicating that the area is a P-TOC area.
[0035]
Subsequently, the disc type and recording level, the music number of the first music piece recorded (First TNO), the music number of the last music piece (Last TNO), the readout start address LO _A , Power cal area start address PC _A , U-TOC start address UST _A , Start address RST of recordable area (recordable user area) _A Etc. are recorded.
[0036]
Subsequently, a correspondence table instruction data section having table pointers (P-TNO1 to P-TNO255) for associating each piece of music or the like recorded in the pit form with a parts table in a management table section described later is prepared.
[0037]
In the area following the correspondence table instruction data portion, there are provided 255 parts tables (01h) to (FFh) corresponding to the table pointers (P-TNO1 to P-TNO255). A table section is prepared. In this specification, the numerical value with "h" is in a so-called hexadecimal notation.
In each of the parts tables, a start address as a starting point, an end address as an end, and mode information (track mode) of the part are recorded.
[0038]
The track mode information in each part table records, for example, information as to whether the part is set to prohibit overwriting or data copying, audio information, monaural / stereo type, and the like. .
[0039]
In each of the parts tables from (01h) to (FFh) in the management table section, the contents of the parts are indicated by table pointers (P-TNO1 to P-TNO255). That is, a part table (for example, (01h)) is recorded as the table pointer P-TNO1 for the first tune. In this case, the start address of the parts table (01h) is the recording position of the first tune. Similarly, the end address is the end address of the position where the first music piece is recorded. Further, the track mode information is information on the first music piece.
Actually, a numerical value capable of indicating a certain parts table at a byte position in the P-TOC sector 0 by a predetermined calculation process is described in the table pointer.
[0040]
Similarly, for the second song, the start address, end address, and track mode information of the recording position of the second song are recorded in the parts table (for example, (02h)) indicated by the table pointer P-TNO2.
Similarly, since the table pointer is prepared up to the P-TNO 255, it is possible to manage up to the 255th tune on the P-TOC.
Then, by forming the P-TOC sector 0 in this way, for example, at the time of reproduction, a predetermined music piece can be accessed and reproduced.
[0041]
In the case of a recordable / reproducible magneto-optical disk, since there is no so-called premastered music area, the above-mentioned correspondence table instruction data section and management table section are not used (these are managed by the U-TOC described below). Therefore, each byte is set to “00h”.
However, for a pre-mastered type disc in which all songs are recorded in a ROM form (pit form) and a hybrid type disc having both a ROM area and a magneto-optical area as an area for recording songs and the like, The correspondence table instruction data section and the management table section are used for managing the music in the ROM area.
[0042]
3. U-TOC sector
Next, sector 0 and sector 1 of the U-TOC will be described as the U-TOC. The U-TOC sector can be composed of sector 0 to sector 7, sector 2 is an area for recording the recording date and time information, and sector 4 is the character information corresponding to tracks and disks recorded in kanji and European characters. It is an area where you can do it. Others are undefined. Since these are not directly related to the present invention, the description is omitted.
[0043]
・ U-TOC sector 0
FIG. 8 shows the format of the U-TOC sector 0, which is mainly a data area in which management information on music recorded by the user and a free area where new music can be recorded is recorded.
For example, when recording a certain music on the disk 1, the system controller 11 searches for a free area on the disk from the U-TOC sector 0, and records audio data there. At the time of reproduction, the area in which the music to be reproduced is recorded is determined from U-TOC sector 0, and the reproduction operation is performed by accessing the area.
[0044]
The U-TOC sector 0 shown in FIG. 8 is provided with a header first, similarly to the P-TOC, followed by a maker code, a model code, a music number (First TNO) of the first music piece, and a last music piece at a predetermined address position. Data such as a song number (Last TNO), a sector use state (Used sectors), a disk serial number, a disk ID, and the like of the music are recorded.
[0045]
Furthermore, in order to identify a music area or a free area recorded by the user by associating it with a management table section described later, various table pointers (P-DFA, P-DFA, P-DFA, P- -EMPTY, P-FRA, P-TNO1 to P-TNO255) are provided.
[0046]
Then, 255 parts tables (01h) to (FFh) are provided as a management table unit corresponding to the table pointers (P-DFA to P-TNO255). As in the P-TOC sector 0, a start address as a starting point, an end address as an end, and mode information (track mode) of the part are recorded for a certain part.
Further, in the case of the U-TOC sector 0, since the parts indicated in each part table may be successively connected to other parts, the parts table in which the start address and the end address of the connected parts are recorded Can be recorded.
[0047]
In this type of recording / reproducing apparatus, since the data of one music piece is physically discontinuous, that is, even if the data is recorded over a plurality of parts, it is reproduced while accessing between the parts, so that the reproducing operation is not hindered. In some cases, a song or the like recorded by a user may be recorded in a plurality of parts for the purpose of efficient use of a recordable area.
Therefore, link information is provided, and the part tables can be connected by designating the part tables to be connected by, for example, the numbers (01h) to (FFh) given to the respective part tables.
In other words, in the management table section in the U-TOC sector 0, one parts table represents one part. For example, for a music composed of three parts connected, three parts connected by link information The position of the part is managed by the table.
[0048]
Note that the link information is actually indicated by a numerical value which is a byte position in the U-TOC sector 0 by a predetermined calculation process. That is, the part table is designated as 304+ (link information) × 8 (byte).
In addition, since music and the like recorded in a pit form on a premastered disc or the like are not normally divided into parts, all link information is set to “(00h)” in the P-TOC sector 0 as shown in FIG. I have.
[0049]
Each part table from (01h) to (FFh) in the management table section of the U-TOC sector 0 is determined by the following table pointers (P-DFA, P-EMPTY, P-FRA, P-TNO1 to P-TNO255). The contents of the part are shown as follows.
[0050]
The table pointer P-DFA is attached to a defective area on the magneto-optical disk 1, and a head in one or more parts tables showing a track portion (= part) serving as a defective area due to a scratch or the like is shown. Parts table is specified. That is, when a defective part exists, any one of (01h) to (FFh) is recorded in the table pointer P-DFA, and the defective part is indicated by the start and end addresses in the corresponding part table. . If another defective part exists, another part table is designated as link information in the part table, and the defective part is also shown in the part table. If there is no other defective part, the link information is set to, for example, "(00h)", and there is no link thereafter.
[0051]
The table pointer P-EMPTY indicates the head part table of one or a plurality of unused part tables in the management table section. If an unused part table exists, (01h) is set as the table pointer P-EMPTY. ) To (FFh) are recorded. When there are a plurality of unused part tables, the part tables are sequentially specified by the link information from the part table specified by the table pointer P-EMPTY, and all the unused part tables are connected on the management table part. Is done.
[0052]
The table pointer P-FRA indicates a writable free area (including an erased area) on the magneto-optical disk 1 and one or a plurality of parts indicating a track part (= part) serving as the free area. The first parts table in the table is specified. In other words, when a free area exists, any one of (01h) to (FFh) is recorded in the table pointer P-FRA, and the corresponding parts table is indicated by the start and end addresses in the corresponding parts table. Have been. Further, when there are a plurality of such parts, that is, when there are a plurality of parts tables, the link information sequentially designates the parts tables whose link information is “(00h)”.
[0053]
FIG. 9 schematically shows the management state of parts that are free areas by using a parts table. This is because when the parts (03h), (18h), (1Fh), (2Bh), and (E3h) are set as free areas, this state is changed to the parts table (03h) (18h) (1Fh) following the corresponding table instruction data P-FRA. The state represented by the link (2Bh) (E3h) is shown. The above-described management of the defective area and the unused parts table is the same.
[0054]
By the way, in the case of a magneto-optical disc on which no audio data such as music has been recorded and which has no defect, the parts table (01h) is designated by the table pointer P-FRA, and thereby the entire recordable user area of the disc is designated. Is a free area. Since the remaining part tables (02h) to (FFh) are not used in this case, the part table (02h) is designated by the table pointer P-EMPTY, and the part table (02h) is not used. The parts table (03h) is specified as the link information.... 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.
[0055]
The table pointers P-TNO1 to P-TNO255 indicate music recorded by the user on the magneto-optical disk 1. For example, in the table pointer P-TNO1, one or a plurality of parts in which data of the first music is recorded Specifies the parts table in which the temporally leading parts are indicated.
For example, if the first tune is recorded on the disc without dividing the tracks, that is, recorded as one part, the recording area of the first tune is determined by the start and end points in the parts table indicated by the table pointer P-TNO1. It is recorded as an end address.
[0056]
Further, for example, when the second piece of music is discretely recorded on a plurality of parts on the disc, each part is designated in order of time to indicate the recording position of the music. In other words, from the part table designated by the table pointer P-TNO2, another part table is sequentially designated by link information in a temporal order, and linked to a part table in which the link information is "(00h)". (Same form as in FIG. 9 above). In this way, for example, since all the parts on which the data constituting the second tune are recorded are sequentially specified and recorded, the data of the U-TOC sector 0 can be used when reproducing the second tune or in the second tune. When performing overwriting on the area, it is possible to access the optical head 3 and the magnetic head 6 to extract continuous music information from discrete parts, and to perform recording using the recording area efficiently.
[0057]
・ U-TOC sector 1
Next, FIG. 10 shows a format of the U-TOC sector 1. This sector is used as a data area for recording input character information when a track name or a disc title is given to each recorded track.
[0058]
In this U-TOC sector 1, slot pointers P-TNA1 to P-TNA255 are prepared as character slot indication data portions corresponding to recorded tracks, and are designated by the slot pointers P-TNA1 to P-TNA255. The character slot portion is prepared as slots (01h) to (FFh) of 8 units of 255 bytes and manages character data in substantially the same form as the U-TOC sector 0 described above.
[0059]
In the slots (01h) to (FFh), character information as a disc title or a track name is recorded in ASCII code. The 8 bytes before the slot (01h) are a dedicated area for the disc name.
Then, for example, in the slot specified by the slot pointer P-TNA1, a character input by the user corresponding to the first track is recorded. Further, by linking the slots by the link information, the character input corresponding to one track can be handled even if it is larger than 7 bytes (7 characters).
In this U-TOC sector 1, the slot pointer P-EMPTY manages an unused parts table.
[0060]
4. EOM control operation
In the recording / reproducing apparatus of the present embodiment, the user can record character information such as a track name corresponding to each track recorded on the disc with the TOC information configured as described above. That is, when the user designates a track and inputs character information by operating the operation unit 19, the character is recorded corresponding to the designated track in the U-TOC sector 1.
Here, in this embodiment, in addition to arbitrary character information such as a track name, specific control character information can be recorded in the U-TOC sector 1 corresponding to a track. The control character information is, for example, information for an EOM operation or a fade-in / fade-out operation.
First, control character information for the EOM operation will be described.
[0061]
In this embodiment, the specific control character information for the EOM operation is “EOM-x”. “X” is a value of the time of the EOM operation start timing.
It is assumed that the operation unit 19 shown in FIG. 1 includes an EOM key and a numeric input key in addition to the various keys described above. As described above, for character input, an alphabet key for normal character input, an edit mode key for setting a character input mode, and a key for designating a track number are also provided.
Actually, the numeric input key, the key for specifying the track number, and the alphabet key can also be used.
[0062]
The input of the control character information may be executed in the character input mode of the editing function, similarly to the normal character input.
FIG. 2 shows a processing example of the system controller 11 at the time of inputting character information. When an operation for setting the character input mode is performed, the process proceeds from step F301 to F302. If no track is specified for character input, the operation proceeds to the disk name input mode operation (F303). When a track is designated during reproduction, pause, or a track number input operation of a certain track, the operation proceeds to a character information input mode operation corresponding to the track.
[0063]
In this case, while the characters input for the track specified in step F304 are displayed on the display unit 20, the characters are input in accordance with the user's EOM key operation (F305) or the character input operation (F306). .
For example, when a character is input with an alphabet key, the input character is added to the character string corresponding to the track and displayed on the display unit 20 (F306, F312, F304). Therefore, the user can input an arbitrary character as a track name by proceeding with character input while looking at the display unit 20.
[0064]
On the other hand, when the user wants to execute the EOM control during the reproduction of the track, the user operates the EOM key and further sets the EOM control time value, that is, how many seconds until the reproduction ends, to display the message of the end of the track reproduction. The set time is input (F305, F306). Then, the system controller 11 determines whether a character string such as a track name has already been input, and if not, generates a character string “EOM-x;” and adds it as a character string. “X” is a numerical value input as the EOM control time value (F309 → F311).
If a character string such as a track name has already been input, a character string ";" is generated, and then a character string "EOM-x;" is generated and added as a character string.
(F309 → F310 → F311).
[0065]
For example, if the user wants to execute the EOM operation 10 seconds before the end of reproduction of a certain track, the user only has to input the number “10” following the EOM key. In that case, “EOM-10;” or “; EOM-10; "is generated and set as an input character string. The character string "EOM-10" becomes control character information for the EOM operation. In addition, since the control character information is continuously added to the character string serving as the track name, the character string portion as the control character information is distinguished by ";" serving as a delimiter code.
[0066]
The character input control proceeds from step F307 to step F313 in response to the end operation of the character input mode. The character string input at that time is stored in the U-TOC sector 1 stored in the buffer RAM 13 and the designated track is recorded. Is completed by adding in correspondence with.
Note that the control character information for the EOM operation is input using the EOM key. However, in a recording apparatus having no EOM key, (“;”) “E” is used in a normal character input operation. ], "O", "M", "-", "1", "0", ";", one character at a time, and finally the character string "EOM-10;" or ";EOM-10;" What should be done is.
[0067]
For example, FIG. 4A shows an example of a recorded character string in a case where character information for tracks 1 to 4 is recorded in U-TOC sector 1.
In this case, character information "ABC;EOM-5;" is recorded for track 1, that is, "ABC" is a character string input as a track name, and "EOM-5" is delimited by ";". Is recorded as EOM control character information. That is, at the time of the reproduction operation of the track 1, EOM control character information indicating that the EOM operation should be executed from 5 seconds before the end of the reproduction is recorded.
[0068]
For the track 2, no EOM control character information is input, and only the track name "DEF" is recorded.
For track 3, character information "GHI;EOM-10;" is recorded, that is, a track name "GHI" and a character string of EOM control character information "EOM-10" are recorded.
For track 4, character information "JKL;EOM-0;" is recorded, that is, a track name "JKL" and a character string of EOM control character information "EOM-0" are recorded. “EOM-0” is EOM control character information meaning that EOM control is not executed.
[0069]
The operation at the time of reproduction will be described below, taking as an example a case where character information is recorded as shown in FIG.
FIG. 3 shows the processing of the system controller 11 during reproduction.
When the reproduction of a certain track is started, first, the system controller 11 determines the character information recorded on the U-TOC sector 1 corresponding to the track (F101 → F102). Here, it is determined whether or not the EOM control character information is included (F103). If the EOM control character information is included, a control variable is set based on the EOM control character information (F104). For example, in the case of the track 1 in FIG. 4A, a control variable is set to execute the EOM operation five seconds before the end of the reproduction. In the case of track 4, a control variable is set so that the EOM operation is not performed.
[0070]
If it is determined in step F103 that the EOM control character information is not included, the control variable is set based on the EOM control information stored and set in the RAM 11a or the like of the system controller 11 (F105). For example, if there is no particular designation for each track, the system controller 11 can be set to execute the EOM operation when a predetermined number of seconds has elapsed until the end of the track. Now, as an example, it is assumed that the system controller 11 itself is set to execute the EOM operation seven seconds before the end of the reproduction.
If the track to be reproduced does not include the EOM control character information as in track 2 in FIG. 4A, the EOM operation set in the system controller 11 is performed in the recording / reproducing apparatus main body. That is, the control variable is set as EOM 7 seconds.
[0071]
When the EOM operation timing is set in step F104 or F105 as described above, it is monitored that the remaining time of the reproducing operation reaches the EOM operation timing (F106), and when it reaches, the EOM operation is started (F107). For example, the display unit 20 blinks all display contents, executes display indicating that the reproduction of the track is about to be completed, or the like.
This EOM operation is performed until the reproduction of the track is completed. When the reproduction is shifted to the next track (F108), the EOM operation is completed (F109), and the process returns to step F102 to return to the EOM for the track to be reproduced again. It will start the setting process.
[0072]
Considering the case where tracks 1 to 4 in FIG. 4A are continuously reproduced, the operation control as schematically shown in FIGS. 4B and 4C is executed by the control as shown in FIG. Will be done.
t ₀ Track 1 whose reproduction has started at the point in time is t ₂ It is assumed that the reproduction ends at this point. Then, according to EOM control character information “EOM-5”, t ₂ T 5 seconds before the time ₁ From the time point, the EOM display operation is performed as shown in FIG.
Track 2 is t ₄ When the reproduction is completed at this point, since the EOM control character information is not recorded for the track 2, the EOM operation set in the system controller 11, ie, t ₄ T 7 seconds before the time ₃ From the time point, the EOM display operation is performed as shown in FIG.
[0073]
Track 3 is t ₆ It is assumed that the reproduction ends at this point. Then, according to EOM control character information “EOM-10”, t ₆ T 10 seconds before the time ₅ From the time point, the EOM display operation is performed as shown in FIG.
Track 4 is t ₇ It is assumed that the reproduction ends at this point. For track 4, EOM control character information "EOM-0" is recorded, that is, designation of not performing the EOM display operation. Therefore, the EOM display operation is not performed as shown in FIG.
[0074]
As can be understood from the above description, in this embodiment, the EOM information is recorded as character information in the U-TOC in a state corresponding to each track, so that the EOM operation can be managed on a track basis.
Note that the track name display operation at the time of reproduction may be performed in units of character strings delimited by “;”. For example, during the reproduction of the track 1 in FIG. 4A, normally, only the character “ABC” is displayed, and the display “EOM-5” is executed according to the switching of the display mode. The track name can be displayed as usual, and EOM character information can be displayed as needed, for example, when it is desired to check the EOM setting state.
The same applies to the control character information for fade-in / fade-out described below.
[0075]
5. Fade-in / fade-out control operation
Similarly to the EOM control described above, in this embodiment, the fade-in / fade-out control operation can be set for each track.
That is, specific control character information for fade-in / fade-out control can be recorded in the U-TOC sector 1 corresponding to the track.
[0076]
In this embodiment, the specific control character information for fade-in control is "FADEIN-x". It is also assumed that specific control character information for fade-out control is “FADEOUT-x”. “X” is the value of the execution period of the fade-in / fade-out operation.
[0077]
In this case, the input operation of the character information is almost the same as the processing described with reference to FIG. 2. When a fade-in key and a fade-out key are provided in the operation unit 19, the operation is the same as the operation of the EOM key in FIG. 2. And it is sufficient.
That is, by performing a fade-in key and a numeric input in the character input mode, a character string “FADEIN-x;” or “; FADEIN-x;” is generated and set as an input character string. Similarly, by performing a fade-out key and numeric input, a character string "FADEOUT-x;" or ";FADEOUT-x;" is generated and set as an input character string.
Of course, instead of using the fade-in key and the fade-out key, each character can be input one by one and a character input such as "FADEIN-x;" can be performed.
[0078]
For example, FIG. 6A shows an example of a recorded character string when character information relating to fade-in / fade-out control is recorded in the U-TOC sector 1 for tracks 1 to 3.
In this case, the character information "ABC;FADEOUT-5;" is recorded for the track 1, that is, the character string "FADEOUT-5" delimited by the track name "ABC" and ";" It is recorded as character information.
That is, at the time of the reproduction operation of the track 1, fade-out control character information indicating that the fade-out operation should be performed from 5 seconds before the end of the reproduction is recorded.
[0079]
For track 2, character information "DEF;FADEIN-10;FADEOUT-7;" is recorded. That is, the track name "DEF", fade-in control character information indicating that a fade-in should be performed within 10 seconds from the start of reproduction, and fade-out control character information indicating that a fade-out operation should be performed seven seconds before the end of the reproduction is recorded. Have been.
For track 3, character information "GHI;FADEIN-5;" is recorded. That is, the track name "GHI" and fade-in control character information indicating that fade-in should be performed within 5 seconds from the start of reproduction are recorded.
Although not shown in this example, if the fade-in / fade-out is not executed, the characters "FADEIN-0" and "FADEOUT-0" may be recorded.
[0080]
The operation at the time of reproduction will be described below, taking as an example a case where character information is recorded as shown in FIG.
FIG. 5 shows the processing of the system controller 11 during reproduction for fader control.
When the reproduction of a certain track is started, first, the system controller 11 determines the character information recorded on the U-TOC sector 1 corresponding to the track (F201 → F202). Here, it is determined whether or not the fade-in control character information is included (F203), and if so, a control variable is set based on the fade-in control character information (F204). For example, in the case of track 2 in FIG. 6A, a control variable is set to execute a fade-in operation in a period of 10 seconds from the start of reproduction.
[0081]
If it is determined in step F203 that no fade-in control character information is included, a control variable is set based on the fade-in control information stored and set in the RAM 11a or the like of the system controller 11 (F205). As in the case of the EOM described above, the system controller 11 can hold a specific set value for fade-in / fade-out control. If there is no particular designation for the fade-in / fade-out for each track, the specific set value is used as valid.
Now, as an example, it is assumed that the system controller 11 is set not to execute the fade-in operation but to execute the fade-out operation 10 seconds before the end of the reproduction.
When the track to be reproduced does not include the fade-in control character information as in track 1 in FIG. 6A, the fade-in operation set in the system controller 11 in the recording / reproducing apparatus main body. Is performed, that is, the fade-in operation is set not to be performed.
[0082]
After the fade-in operation is set in step F204 or F205 in this manner, the setting relating to the fade-out is performed in steps F206 to F208. That is, similarly to the fade-in, it is determined whether or not the character information includes fade-out control character information, and if so, a fade-out control variable is set based on the fade-out control character information. If not, the fade-out control variable set in the system controller 11 is set. For example, the fade-out operation is set 10 seconds before the end of the reproduction.
[0083]
After the above fade-in and fade-out settings have been made, control is performed based on the fade-in settings since the playback is started (F209). That is, the system controller 11 controls the audio processing unit 15 to gradually increase the audio level so that the fade-in is performed on the reproduced audio output during the set period from the reproduction start time.
Thereafter, it is monitored that the remaining time of the reproducing operation reaches the set fade-out operation timing (F210), and when it reaches, the audio processing unit 15 reduces the audio level gradually until the end of the track reproduction. , And fade out is executed (F211).
When the reproduction is shifted to the next track (F212), the process returns to step F202, and the process enters the fade-in / fade-out setting process for the track to be reproduced again.
[0084]
Considering the case where tracks 1 to 3 in FIG. 6A are continuously reproduced, the operation control as shown in FIGS. 6B and 6C is executed by the control as shown in FIG. Will be done.
t ₁₀ Since the fade-in is not performed for the track 1 whose reproduction is started at the time, the fader control level of the audio processing unit 15 is set to the maximum state from the reproduction start time as shown in FIG. ing.
And track 1 is t ₁₂ When the reproduction ends at the point in time, the fade-out control character information "FADEOUT-5" ₁₂ T 5 seconds before the time ₁₁ From time t ₁₂ Until the time point, the fader control level is lowered as shown in FIG. 6C, and a fade-out operation is performed.
[0085]
The reproduction of track 2 is started by the fade-in control character information "FADEIN-10". ₁₂ T 10 seconds after the time _Thirteen Until the time point, the fader control level is gradually increased as shown in FIG. 6C, and the fade-in operation is performed.
And track 2 is t _Fifteen When the reproduction ends at the point in time, the fade-out control character information "FADEOUT-7" _Fifteen T 7 seconds before the time ₁₄ From time t _Fifteen Until the time point, the fader control level is gradually lowered as shown in FIG. 6C, and a fade-out operation is performed.
[0086]
The reproduction of track 3 is started by the fade-in control character information “FADEIN-5”. _Fifteen T 5 seconds after the time ₁₆ Until the time point, the fader control level is gradually increased as shown in FIG. 6C, and the fade-in operation is performed.
And track 3 is t ₁₈ When playback ends at that point. Since no fade-out control character information is recorded for the track 3, the fade-out control value set in the system controller 11 realizes, for example, a fade-out operation in a 10-second period in this case. That is, t ₁₈ T 10 seconds before the time ₁₇ From time t ₁₈ Until the time point, the fader control level is gradually lowered as shown in FIG. 6C, and a fade-out operation is performed.
[0087]
As can be understood from the above description, in the present embodiment, the fade-in / fade-out information is recorded as character information in the U-TOC in a state corresponding to each track. can do.
[0088]
Although the fade-in / fade-out operation and the EOM operation have been described separately, it goes without saying that they can actually function in a complex manner. For example, if character information such as "ABC;EOM-5;FADEIN-5;FADEOUT-7;" is recorded, EOM operation, fade-in operation, and fade-out operation can be set for reproduction of the track. Become.
[0089]
6. Other various control operations
Although the EOM operation and the fade-in / fade-out operation have been described above, other control character information can be set similarly.
For example, control character information may also be set for equalizing processing, reverb processing, delay processing, compressor processing, and the like at the time of reproduction, and control may be performed for each track.
For example, regarding the equalizing process, it is conceivable to set character information such as "; LOWCUT-100 Hz; LOWCUT-1.0 dB; HICUT-8 KHz; HICUT-2.0 dB;" In this case, a control may be performed such that a 1 dB cut is made at 100 Hz or less and a 2 dB cut is made at 8 kHz or more during reproduction.
Of course, various control modes other than the above can be considered.
[0090]
As for the control character information, it is preferable that the contents of the control operation can be understood only by looking at the character information as much as possible in consideration of convenience in displaying and confirming the contents. That is, if the control character information for the EOM function is "EOM-x" as in the embodiment and the control character information for the fade-in function is "FADEIN-x", the control contents can be confirmed. Becomes easier.
[0091]
It should be noted that the above-described embodiment is merely an example, and it is needless to say that various modifications of the EOM operation, the fade-in / fade-out operation, the control character information setting, the operation processing method, and the like can be considered as the present invention. Absent. Although the control character information is delimited by the character ";", another character or a character string may be set as the character serving as the delimiter code. Also, the position where the delimiter code is inserted does not need to be before or after the control character information as described above. For example, it can be considered that it is only before the control character information.
[0092]
【The invention's effect】
As described above, the reproducing apparatus of the present invention extracts control character information from character information corresponding to each track during reproduction and performs necessary operation control based on the extracted character information. There is an effect that an operation to be performed can be set. In particular, since the EOM function, the fade-in / fade-out function, and the like can be set in units of a track, it is very suitable for use in a broadcast business or the like.
[0093]
Further, since the recording device of the present invention capable of recording character information is provided with an operation means for inputting control character information, it is not necessary to input specific control character information one character at a time. There is an effect that the operation can be simplified. Further, by distinguishing the character string from other character strings by a delimiter code, necessary control such as not displaying control character information even in normal character display or the like can be performed.
[Brief description of the drawings]
FIG. 1 is a block diagram of a recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart of a process during a character input operation according to the embodiment.
FIG. 3 is a flowchart of an EOM process according to the embodiment.
FIG. 4 is an explanatory diagram of an EOM operation during reproduction according to the embodiment.
FIG. 5 is a flowchart of a fade-in / fade-out process according to the embodiment.
FIG. 6 is an explanatory diagram of a fade-in / fade-out operation during reproduction according to the embodiment.
FIG. 7 is an explanatory diagram of a P-TOC sector 0 of the mini disc.
FIG. 8 is an explanatory diagram of U-TOC sector 0 of a mini disc.
FIG. 9 is an explanatory diagram of a link structure of U-TOC sector 0 of the mini disc.
FIG. 10 is an explanatory diagram of a U-TOC sector 1 of the mini disc.
[Explanation of symbols]
1 disk
3 Optical head
5 Thread mechanism
7 RF amplifier
8 Encoder / decoder part
9 Servo circuit
10 Address decoder
11 System controller
12 Memory controller
13 Buffer RAM
14 Encoder / decoder part
15 Audio processing unit
19 Operation section
20 Display

Claims (4)

A recording corresponding to a recording medium provided with a character recording area capable of recording character information corresponding to each track as management information while recording audio information in which one unit is formed as one track. As a device,
Recording means capable of writing information corresponding to a recording medium;
In accordance with a character input operation, the recording means can record character information corresponding to a track in a character recording area of a recording medium, and in response to an operation of a predetermined operation means, a predetermined time when reproducing the track. Character recording control means capable of generating specific control character information for performing the operation of (a) and, if necessary, recording in a character recording area while being distinguished from arbitrary character information by a predetermined delimiter code. ,
Equipped with a,
The control character information is control character information for performing an operation of presenting that a reproduction operation has reached a point in time when the remaining time until the reproduction of the track has reached n when the track is reproduced, and A recording apparatus comprising a character for designating the value of the time amount n . The control character information is control character information for executing a fade-in operation at the start of reproduction or a fade-out operation at the end of reproduction at the time of reproduction of the track, and has a fade-in operation period or a fade-out operation period. 2. The recording apparatus according to claim 1, wherein a character to be specified is included. Playback corresponding to a recording medium in which audio information in which one unit is formed as one track is recorded and a character recording area in which character information can be recorded corresponding to each track is prepared as management information As a device,
Reproducing means capable of reading information from a recording medium;
When a reproducing operation of a certain track is performed by the reproducing means, character information corresponding to the track is read from a character recording area of a recording medium, and the read character information includes predetermined control character information. Playback control means capable of executing an operation control according to the control character information as an operation related to a track reproduction operation,
A presentation means for presenting output Rutotomoni, the information provided with,
The reproduction control means performs an operation of presenting that the control character information included in the character information has reached a point in time when the amount of time remaining until the reproduction of the track has reached n when the reproduction operation of the track has reached n. In the case where the control character information is to cause the presenter to perform a required presentation operation by the presentation means from the time when the track reproduction operation has progressed to the state of the remaining time amount n. Playback device. Fader means for outputting a fade output for audio data output, wherein the reproduction control means performs a fade-in operation at the start of reproduction or a reproduction operation when the control character information included in the character information is reproduced when the track is reproduced; If the control character information is for executing a fade-out operation at the time of termination, the fader means is configured to be able to execute a fade-in operation or a fade-out operation during a period specified by the control character information. The playback device according to claim 3, wherein

Images