JP3612754B2 - Recording apparatus and reproducing apparatus - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a recording apparatus and a reproducing apparatus for a recording medium having management information for managing recording / reproducing operations of audio data in units of tracks.
[0002]
[Prior art]
A mini-disc system is known as a rewritable disc-shaped recording medium on which a user can record music data. In this mini-disc system, an area in which data such as music is already recorded or an unrecorded area is known. A data area (user TOC, hereinafter referred to as U-TOC) is provided, and the management data is rewritten in accordance with operations such as recording, editing, and erasing.
[0003]
For example, when recording a certain piece of music, the recording device finds an unrecorded area on the disk from the U-TOC and records audio data therein. Further, in the playback device, an area in which a music (track) to be played back is recorded is determined from the U-TOC, and the playback operation is performed by accessing the area.
[0004]
In such a recording / reproducing system, by updating the U-TOC, it is possible to easily divide one track into a plurality of tracks or connect a plurality of tracks as one track.
[0005]
For example, when recording a meeting or the like by connecting a microphone to a recording device, the recording from the start to the end of recording is recorded as one track, but if the recording time (one track) is long, Inconvenient during playback. That is, it is necessary to send the playback position by high-speed playback or the like in order to search for a part to be re-listened in the conference, which is a troublesome operation. However, if this track is divided into a plurality of tracks, it can be easily accessed by track access, and the user can quickly find the part he wants to hear. This is because the access position can be executed because the start position (address) is recorded in the U-TOC in track units.
Such a track division can be performed after recording, and a method has been developed in which a predetermined operation is performed during recording so that the recorded content from that point is set as the next track. Thus, when the user arbitrarily divides the track during recording or the like, the high-speed access function for the track is effectively utilized during reproduction, which is very convenient.
[0006]
[Problems to be solved by the invention]
By the way, for example, when a user records a meeting or an interview in a mini-disc system, for example, in an important part, it is not only to divide the track but also to distinguish it from other tracks. There is a desire to give priority and allow the playback device to execute access to the track given priority.
In this way, you can not only separate each track, but also distinguish the tracks that the user has determined to be important, and if you want to listen to important tracks, make sure that the important tracks are accessed during playback. Thus, the operation is faster and hassle-free.
However, since the start address and the end address are simply recorded for each track on the U-TOC, the important track and the normal track cannot be distinguished, and priority cannot be given to an arbitrary track. .
[0007]
[Means for Solving the Problems]
In view of such circumstances, an object of the present invention is to make it possible to give priority to an arbitrary track so that the track can be easily accessed during reproduction.
[0008]
For this purpose, the recording apparatus includes a recording medium having a data area in which data is recorded and a management area in which management data including character data indicating the contents of each track obtained by dividing the data into predetermined units is recorded. A recording means for performing recording;When the track division is executed, the management data is updated and newly generated by the division.If a track is designated as an important track,Newly generatedIdentification data identifying the importance of the trackNewly generatedCharacter data corresponding to the trackAnd editControl means for recording on the recording medium;Display means for displaying the character data corresponding to the newly generated track including the identification data when the newly generated track is designated as important;Was made up of.
[0009]
Also,One operation means for performing an operation for dividing a track and an operation for designating an important track, and the control means is an operation for dividing the track according to an operation method of the operation means, or It is determined whether the operation is for specifying the important track.
[0010]
As the management data editing method, the management data of a recording medium having a data area in which data is recorded and a management area in which management data including character data indicating the contents of each track obtained by dividing the data into predetermined units is recorded TheSplitand when,Newly generated by splitIf a track is designated as important,Newly generatedIdentification data that identifies the importance of the trackThe newly createdCharacter data corresponding to the trackIncluded inTo editAt the same time, the character data corresponding to the specified track is displayed.I did it.
[0013]
[Action]
By giving priority to an arbitrary track as an important track so that it can be distinguished from a normal track, it is possible to perform easier access to that track.
In order to record an identification code as an important track, a predetermined area corresponding to the track may be allocated on the management information.
[0014]
【Example】
Hereinafter, a recording / reproducing apparatus corresponding to a magneto-optical disk (mini disk) will be described as an example 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). Track split operation
5). Access behavior during playback
[0015]
1. Configuration of recording / playback device
FIG. 1 shows an example of the appearance of a recording / reproducing apparatus of the embodiment, and 30 shows the entire recording / reproducing apparatus.
The recording / reproducing apparatus 30 is provided with a lid 31. The lid 31 is opened so that a disk can be accommodated therein.
Reference numeral 22 denotes a display unit formed by a liquid crystal panel or the like, which displays the operation state, track number, time, and the like.
[0016]
Various operation keys are provided on the housing of the recording / reproducing apparatus 30. Reference numeral 32 denotes an eject switch, and the lid 31 is opened by operating the eject switch 32. Reference numeral 33 denotes a reproduction key. When the reproduction key 33 is pressed, the power is turned on and reproduction is started.
Reference numerals 34 and 35 denote AMS keys (head access / search keys). When the AMS key 34 is pressed during reproduction, the head position of the next track is accessed, and when the AMS key 35 is pressed, the head position of the current track or the previous track is accessed. The AMS keys 34 and 35 are continuously pressed to perform fast forward or fast reverse playback.
Reference numeral 36 denotes a stop key, which also serves as a power off key. 37 is a pause key and 38 is a volume up / down key.
Reference numeral 39 denotes a track mark key. When the track mark key 39 is pressed during recording, the track is divided at that point. Reference numeral 40 denotes a character input mode key.
Reference numeral 41 denotes a recording key.
[0017]
When recording with the recording / reproducing apparatus 30, the microphone 50 is connected to the microphone input terminal 18.
In addition, reproduced sound from the recording / reproducing apparatus 30 or monitor sound during recording is output from the headphones 43. The headphone 43 connects the plug portion 42 to the headphone terminal 17.
[0018]
The headphone 43 is provided with a remote control unit 44 so that the recording / reproducing apparatus 30 can be remotely operated. For this reason, the headphone terminal 17 is provided with a remote control input terminal as well as an audio output terminal so that operation information from the remote control unit 44 is supplied to the recording / reproducing apparatus 30.
The remote control unit 44 is provided with a playback / AMS key 45, a stop key 46, a pause key 47, a track mark key 48, and the like that distinguish playback / forward access / backward access according to the pressed position.
[0019]
A block diagram of the main part of this recording / reproducing apparatus is shown in FIG.
In FIG. 2, reference numeral 1 denotes a magneto-optical disk on which an audio data track is recorded, for example.
The audio data such as music recorded on the disc 1 is compressed to about 1/5 by a modified DCT (Modified Discrete Cosine Transform) compression technique by digital sampling by 44.1 KHz sampling and 16-bit quantization. Further, EFM modulation and The data is CIRC encoded.
[0020]
The magneto-optical disk 1 is rotationally driven by a spindle motor 2. An optical head 3 irradiates a laser beam to the magneto-optical disk 1 at the time of recording / reproducing, and at the time of recording provides a high level laser output for heating the recording track to the Curie temperature, and at the time of reproduction by the magnetic Kerr effect. A relatively low level laser output for detecting data from the reflected light.
[0021]
For this reason, the optical head 3 is equipped with a laser diode as a laser output means, an optical system including a deflection beam splitter, an objective lens, and the like, and a detector for detecting reflected light. The objective lens 3a is held by a biaxial mechanism 4 so as to be displaceable in the radial direction of the disc and in the direction in which the objective lens 3a is in contact with or separated from the disc.
[0022]
Reference numeral 6a denotes a magnetic head for applying a magnetic field modulated by the supplied data to the magneto-optical disk, which is disposed at a position facing the optical head 3 with the magneto-optical disk 1 in between. The entire optical head 3 and the magnetic head 6 a can be moved in the radial direction of the disk by the thread mechanism 5.
[0023]
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 performs processing of the supplied information to generate a reproduction RF signal, tracking error signal, focus error signal, groove information (absolute position information recorded as a pregroove (wobbling groove) on the magneto-optical disk 1), and the like. Extract. The extracted reproduction RF signal is supplied to the encoder / decoder unit 8. The tracking error signal and the focus error signal are supplied to the servo circuit 9.
The groove information is supplied to the address decoder 10 and output as address information by demodulation and decoding processing. The address information is supplied to the system controller 11 constituted by a microcomputer.
[0024]
The servo circuit 9 generates various servo drive signals based on the supplied tracking error signal, focus error signal, track jump command, access command from the system controller 11, rotation speed detection information of the spindle motor 2, etc. The thread mechanism 5 is controlled to perform focus and tracking control, and the spindle motor 2 is controlled to a constant linear velocity (CLV).
[0025]
The reproduction RF signal is subjected to decoding processing such as EFM demodulation and CIRC by the encoder / decoder unit 8, and then once written by the memory controller 12 into the buffer RAM 13 formed of D-RAM. The reading of data from the magneto-optical disk 1 by the optical head 3 and the transfer of reproduction data in the system from the optical head 3 to the buffer RAM 13 are performed at 1.41 Mbit / sec and intermittently.
[0026]
The data written in the buffer RAM 13 is read at a timing when the reproduction data transfer is 0.3 Mbit / sec and supplied to the encoder / decoder unit 14. Then, a 16-bit quantized output digital signal is obtained by the decoding process for the audio compression process by the modified DCT process.
[0027]
The output digital signal is converted into an analog signal by the D / A converter 15 and supplied to the amplifier circuit 16. Then, the signal is supplied from the amplifier circuit 16 to the connected headphones from the audio output terminal 17 a in the headphone terminal 17.
Although not shown, a line output terminal or a digital output terminal may be provided.
[0028]
The system controller 11 also controls a laser control signal S for controlling the operation of the laser diode in the optical head 3._LPThe output of the laser diode is controlled on / off, and at the time of on control, the output during reproduction when the laser power is relatively low and the output during recording where the laser power is relatively high Can be switched.
[0029]
When a recording operation is performed on the magneto-optical disk 1, an analog audio signal input from the microphone input terminal 18 is supplied to the microphone amplifier / AGC circuit 19. Then, the A / D converter 20 converts the digital data to 44, 1 KHz sampling and quantization 16 bits, and then supplies the digital data to the encoder / decoder unit 14.
Although not shown, a line input terminal and a digital input terminal may be provided.
[0030]
The encoder / decoder unit 14 performs audio compression encoding by modified DCT processing on the input digital audio signal. The recording data compressed by the encoder / decoder unit 14 is once written in the buffer RAM 13 by the memory controller 12, read at a predetermined timing, and sent to the encoder / decoder unit 8. The encoder / decoder 8 performs encoding processing such as CIRC encoding and EFM modulation, and then supplies the magnetic head driving circuit 6 with the encoding processing.
[0031]
The magnetic head drive circuit 6 supplies a magnetic head drive signal to the magnetic head 6a in accordance with the encoded recording data. That is, an N or S magnetic field is applied to the magneto-optical disk 1 by the magnetic head 6a. At this time, the system controller 11 supplies a control signal to the optical head so as to output a recording level laser beam.
[0032]
Reference numeral 21 denotes an operation input unit provided with keys used for user operations, and the operation keys 33 to 41 described above correspond thereto.
[0033]
The system controller 11 is constituted by a microcomputer for controlling various operations such as recording / playback / editing. Reference numeral 11a denotes a RAM in the system controller 11 and is composed of an S-RAM.
A memory backup configuration is adopted for the S-RAM 11a.
As described above, the headphone 43 is provided with the remote control unit 44, but operation information from the remote control unit 44 is supplied to the system controller 11 from the remote control input terminal 17 b in the headphone terminal 17.
In addition, the system controller 11 controls the display unit 22 to display the operation status during playback and recording, the track number during playback / recording, the progress time, the mode state, and the like.
[0034]
When a recording / reproducing operation is performed on the disc 1, management information recorded on the disc 1, that is, P-TOC (pre-mastered TOC) and U-TOC (user TOC) is read into the buffer RAM 13. Retained. For example, this reading is performed when a disk is loaded. For this reason, as shown in FIG. 3, the buffer RAM 13 is divided into a buffer area for audio data and an area for holding TOC information. For example, “00000h” to “024BFh” are prepared as areas for holding TOC information, and TOC information for four sectors can be stored.
The system controller 11 further reads necessary information from the buffer RAM 13 from the P-TOC and the U-TOC into the S-RAM 11a, and records information on the disc 1 according to the management information read into the S-RAM 11a. Various controls may be performed by determining the address of the track to be reproduced.
[0035]
The U-TOC is edited and rewritten according to data recording or erasing, but the system controller 11 changes this editing processing to U-TOC information stored in the buffer RAM 13 every time recording / erasing is performed. Further, the U-TOC on the buffer RAM 13 is recorded in the U-TOC area of the disk 1 at a predetermined time.
[0036]
2. P-TOC sector
Here, first, a P-TOC sector will be described as management information for managing track recording / reproducing operations and the like in the disc 1.
As the P-TOC information, area designation 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 that is a reproduction-only optical disc, it is possible to manage music recorded in ROM by the P-TOC.
[0037]
FIG. 13 shows one sector (sector 0) of P-TOC information repeatedly recorded in an area for P-TOC (for example, the ROM area on the innermost side of the disk). The P-TOC sector exists from sector 0 to sector 4, but sector 1 and later are optional.
[0038]
The data area of P-TOC sector 0 (4 bytes x 588 2352 bytes) has a synchronization pattern consisting of 1 byte data of all 0 or all 1 at the head position, and 4 bytes of addresses indicating the cluster address and sector address are added. And the header.
In addition, an identification ID by an ASCII code corresponding to the characters “MINI” is added to a predetermined address position following the header to indicate that it is a P-TOC area.
[0039]
Next, the disc type, recording level, track number of the first track recorded (First TNO), track number of the last track (Last TNO), lead-out start address LO_A  , Power cal area start address PC_A  , Sector usage (Usted sectors), U-TOC start address UST_A  , Start address RST of recordable area (recordable user area)_A  Etc. are recorded.
[0040]
Subsequently, a correspondence table instruction data portion having table pointers (P-TNO1 to P-TNO255) for associating each piece of music recorded in the pit form with a parts table in a management table portion described later is prepared.
[0041]
In the area following the correspondence table instruction data portion, there are provided 255 part tables from (01h) to (FFh) corresponding to the table pointers (P-TNO1 to P-TNO255). A table section is prepared. In the present specification, the numerical value with “h” is a so-called hexadecimal notation.
Each part table can record a start address as a starting point, an end address as a terminal, and mode information (track mode) of the part for a certain part.
[0042]
The track mode information in each part table records information about whether or not the part is set to prohibit overwriting or data copying, whether it is audio information, the type of monaural / stereo, etc. .
[0043]
Each part table from (01h) to (FFh) in the management table part is indicated by the contents of the part by the table pointer (P-TNO1 to P-TNO255) in the corresponding table instruction data part. That is, a part table (for example, (01h)) is recorded as the table pointer P-TNO1 for the first music piece. In this case, the start address of the part table (01h) is the recording position of the first music piece. Similarly, the end address is the end address of the position where the first song is recorded. Further, the track mode information is information about the first music piece.
Actually, a numerical value that can indicate a part table at a byte position in the P-TOC sector 0 by a predetermined calculation process is written in the table pointer.
[0044]
Similarly, for the second music, the start address, end address, and track mode information of the recording position of the second music are recorded in the parts table (for example, (02h)) indicated by the table pointer P-TNO2.
Similarly, since the table pointers are prepared up to P-TNO255, it is possible to manage up to the 255th music on the P-TOC.
Then, by forming the P-TOC sector 0 in this way, it is possible to access and reproduce a predetermined musical piece at the time of reproduction, for example.
[0045]
In the case of a recordable / reproducible magneto-optical disk, since there is no so-called pre-mastered music area, the above-described correspondence table instruction data part and management table part are not used (these are managed by the U-TOC described later). Therefore, all the bytes are set to “00h”.
However, for pre-mastered type discs in which all music pieces are recorded in ROM form (pit form), and for hybrid type discs that have both a ROM area and a magneto-optical area as areas where music pieces are recorded, The correspondence table instruction data part and the management table part are used for management of music in the ROM area.
[0046]
3. U-TOC sector
Subsequently, U-TOC sector 0 and sector 1 will be described as U-TOC.
The U-TOC sector can be provided from sector 0 to sector 7, sector 2 is an area for recording the recording date and time, and sector 4 is an area for recording a kanji code as character information. Since these are not directly related to the present embodiment, description thereof is omitted. However, the management structure of sector 2 and sector 4 can record information corresponding to each track in the same manner as sector 0 and sector 1 described below. In this embodiment, as will be described later, an identification code as an important track is recorded in the sector 1, but the identification code is recorded by using the sector 2, sector 4 or another sector instead of the sector 1. It is also possible to make it.
[0047]
・ U-TOC sector 0
FIG. 14 shows the format of the U-TOC sector 0, which is a data area in which management information is recorded mainly on music recorded by the user and free areas where new music can be recorded.
For example, when recording a certain piece of 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 therein. Further, at the time of reproduction, the area where the music to be reproduced is recorded is determined from the U-TOC sector 0, and the area is accessed to perform the reproduction operation.
[0048]
The U-TOC sector 0 shown in FIG. 14 is provided with a header in the same manner as the P-TOC, followed by a manufacturer code, a model code, a track number (First TNO) of the first track, and a last address. Data such as a track number (Last TNO), a sector use status (Used sectors), a disk serial number, and a disk ID are recorded.
[0049]
Further, various table pointers (P-DFA, P, etc.) are used as correspondence table instruction data portions in order to identify the recorded music area, free area, and the like by associating them with the management table portion described later. -EMPTY, P-FRA, P-TNO1 to P-TNO255) are recorded.
[0050]
Then, 255 part tables (01h) to (FFh) are provided as management table sections to be associated with the table pointers (P-DFA to P-TNO255). Similar to the P-TOC sector 0, a start address for a certain part, an end address for a final part, and mode information (track mode) of the part are recorded.
Furthermore, in the case of this U-TOC sector 0, since the parts shown in each part table may be connected to other parts in succession, the parts table in which the start address and end address of the connected parts are recorded. Can be recorded.
[0051]
In this type of recording / reproducing apparatus, even if the data of one music is physically discontinuous, that is, recorded over a plurality of parts, it is possible to reproduce while accessing between the parts, so there is no problem in the reproducing operation. The music recorded by the user may be recorded in multiple parts for the purpose of efficient use of the recordable area.
[0052]
For this reason, link information is provided so that the part tables can be connected by designating the part tables to be connected by, for example, numbers (01h) to (FFh) given to the respective part tables.
Actually, the link information is indicated by a numerical value that 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).
Note that since the music recorded in the pit form on the pre-mastered disc or the like is not usually divided into parts, the link information is all “(00h)” in the P-TOC sector 0 as shown in FIG. Yes.
[0053]
In other words, in the management table section in the U-TOC sector 0, one part table represents one part. For example, for music composed of three parts connected, three parts connected by link information. The part position is managed by the table.
[0054]
Each part table from (01h) to (FFh) in the management table part of the U-TOC sector 0 has table pointers (P-DFA, P-EMPTY, P-FRA, P-TNO1 to P) in the corresponding table instruction data part. -TNO255) shows the contents of the part as follows:
[0055]
The table pointer P-DFA shows a defect area on the magneto-optical disk 1 and is the head in one part table or a plurality of part tables in which a track portion (= part) that becomes a defect area due to a scratch or the like is shown. The parts table is specified. In other words, when there is a defective part, 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 parts table. . When there are other defective parts, other part tables are designated as link information in the parts table, and the defective parts are also indicated in the parts table. If there is no other defective part, the link information is, for example, “(00h)”, and there is no link thereafter.
[0056]
The table pointer P-EMPTY indicates the head part table of one or a plurality of unused part tables in the management table section. When there is an unused part table, the table pointer P-EMPTY is (01h ) To (FFh) are recorded. When there are multiple unused part tables, the part tables are specified sequentially by the link information from the part table specified by the table pointer P-EMPTY, and all unused part tables are linked on the management table section. Is done.
[0057]
The table pointer P-FRA indicates a free area (including an erase area) in which data on the magneto-optical disk 1 can be written, and one or a plurality of parts indicating a track portion (= part) to be a free area. The first part table in the table is specified. That is, when there is a free area, one of (01h) to (FFh) is recorded in the table pointer P-FRA, and the part table corresponding to the free area is indicated by the start and end addresses. Has been. Further, when there are a plurality of such parts, that is, there are a plurality of part tables, the part information in which the link information is “(00h)” is sequentially specified by the link information.
[0058]
FIG. 15 schematically shows the management state of the parts that become free areas using the parts table. This is because when the parts (03h) (18h) (1Fh) (2Bh) (E3h) are in the free area, this state continues to the correspondence table instruction data P-FRA and the parts table (03h) (18h) (1Fh) The state expressed by the link (2Bh) (E3h) is shown. The management form of the above-described defective area and unused parts table is the same as this.
[0059]
By the way, in the case of a magneto-optical disk in which audio data such as music is not recorded at all and there is no defect, the parts table (01h) is designated by the table pointer P-FRA, thereby the entire recordable user area of the disk. Is shown as a free area. In this case, since the remaining part tables (02h) to (FFh) are not used, the parts table (02h) is designated by the table pointer P-EMPTY, and the parts table (02h) A part table (03h) is designated as link information, and so on. In this case, the link information of the parts table (FFh) is "(00h)" indicating 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.
[0060]
Table pointers P-TNO1 to P-TNO255 indicate music pieces recorded by the user on the magneto-optical disk 1. For example, the table pointer P-TNO1 includes one or more parts in which data of the first music piece is recorded. A parts table that shows the first part of the time is specified.
For example, when the music set as the first music is recorded on the disc without the track being divided, that is, recorded as one part, the recording area of the first music is the start and the part table indicated by the table pointer P-TNO1. It is recorded as an end address.
[0061]
Also, for example, when the second music piece is recorded discretely on a plurality of parts on the disc, each part is designated according to the temporal order to indicate the recording position of the music piece. That is, from the part table specified by the table pointer P-TNO2, other part tables are sequentially specified by the link information in accordance with the temporal order, and the part table whose link information is “(00h)” is linked. (The same form as in FIG. 15 above). In this way, for example, all the parts 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, it is possible to access the optical head 3 and the magnetic head 6 to extract continuous music information from discrete parts, or to record using the recording area efficiently.
[0062]
・ U-TOC sector 1
FIG. 16 shows the format of the U-TOC sector 1, which is a data area for recording input character information when a song title is given to a song recorded by the user or a disc title is given.
[0063]
In this U-TOC sector 1, slot pointers P-TNA1 to P-TNA255 are prepared as character slot instruction data portions corresponding to the recorded music pieces. A character slot portion designated by the slot pointers P-TNA1 to P-TNA255 is prepared. In the character slot portion, 255 units of slots (01h) to (FFh) are formed with 8 bytes per unit, and character data is managed in the same form as the U-TOC sector 0 described above.
[0064]
In the slots (01h) to (FFh), character information as a disc title (disc name) and a song name (track name) is recorded in ASCII code. The slot of 8 bytes before the slot (01h) is a dedicated area for the disk name.
[0065]
For example, the character input by the user corresponding to the first music is recorded in the slot designated by the slot pointer P-TNA1.
In addition, since the slots are linked by the link information, the character input corresponding to one piece of music can be handled even if it exceeds 7 bytes (7 characters).
In this U-TOC sector 1, the slot pointer P-EMPTY manages unused slots. That is, the unused slots are managed in the same manner as the unused parts table management method using the table pointer P-EMPTY of the U-TOC sector 0 described above.
[0066]
4). Track split operation
Next, the track dividing operation during recording by the recording / reproducing apparatus 30 will be described. In the recording / reproducing apparatus 30 of the present embodiment, the track being recorded can be divided at that timing by pressing the track mark key 39 or 48 during recording. For example, when recording a meeting or the like with the microphone 50 connected, if the track mark key 39 or 48 is pressed at a required timing, the recorded content from that point is recorded as a track with a new track number. Will be.
Further, in this embodiment, the user not only divides the track with the track mark key 39 or 48 but also gives priority to an arbitrary track as an important track and records the track separately from other tracks. be able to.
[0067]
FIG. 4 shows the recording process of the system controller 11. Note that FIG. 4 shows only the processing related to U-TOC editing, and basic control during recording, for example, startup and access of the optical head 3, data transfer processing, and the like are omitted. The display control for the display unit 22 will be described with reference to FIGS.
[0068]
When a recording operation is performed, the system controller 11 first records the track number TNO of the track to be recorded._R  Then, a value obtained by adding 1 to the track number (Last TNO) of the last track recorded in the U-TOC sector 0 is set (F101). If the disc is a virgin disc, the recording track number TNO_R  = 1, and for example, if the disc has been recorded with 3 tracks, the recording track number TNO_R  = 4.
For example, the sound from the microphone 50 is used as recording data, and the recording track number TNO is recorded._R  Are recorded on the disk as tracks (F102). That is, the U-TOC sector 0 is searched for a free area on the disk and accessed, and the position is set to the track TNO._R  Start recording as the start address.
[0069]
The display on the display unit 22 during recording is as shown in FIG. Reference numeral 60 denotes a recording operation state display section. Reference numeral 61 denotes a level display unit which displays an input level during recording. 62 is a stereo mode display section, and 63 is a battery remaining capacity display section.
Reference numeral 64 denotes an operation state display section composed of display segments simulating a disk, and the display is as if the disk is rotating by illuminating the two opposing segments of the inner six in order. Is made. During recording, the disc is controlled to rotate at a low speed, and the outer segment is blinked.
[0070]
Reference numeral 65 denotes a time display section. During recording, “REC REMAIN” is displayed and the remaining recordable time is displayed.
Reference numeral 66 denotes a track number display section. In this example, the recording track number TNO is displayed._R  The state when = 2 is shown.
Reference numeral 67 denotes a disk usage status display unit that visually represents the recorded time, current position, remaining amount, and the like for the disk. For example, 20 segments are prepared as the disk usage status display section 67, and all 20 are lit, which indicates that recording is performed on the entire capacity of the disk. That is, the number of lighting segments is controlled according to the recording amount at that time. In the example of FIG. 5, a segment filled with black is a segment that is lit. The open segments are segments that are not actually lit. Also, the current head position is expressed by blinking segments. In the figure, the blinking segment is shown as a star mark.
[0071]
The system controller 11 monitors the operation of the track mark key 39 or 48 during recording (F103), and when the operation of the track mark key 39 or 48 is performed, the process proceeds to step F104, and the operation is an important track. Check if it was a mark operation. In this embodiment, the normal track mark operation is performed by pressing the track mark key 39 or 48 once, and the important track mark operation is performed by continuously pressing the track mark key 39 or 48 twice.
[0072]
If the operation of the track mark key 39 or 48 has been performed once, the process proceeds to step F105 as the normal track division processing, and the recording track number TNO_R  Is incremented. Then, track division processing is performed in the buffer RAM 13 (F106). That is, the address at the time when the track mark key 39 or 48 is pressed is set to the track that has been recorded (the recording track number TNO)._R  -1) end address, and the next address is the track to be recorded (recording track number TNO)_R  The update process with the start address of) is performed.
As a result, the recorded content from that point is recorded as a new track.
[0073]
As the display control, when the track mark key 39 or 48 is pressed, the display “MARK ON” is displayed on the track number display section 66 for about 1 second as shown in FIG. 5B. At this time, the operation state display unit 64 is in a display state in which the disk is rotating at high speed.
Thereafter, as shown in FIG. 5C, a new track number “003” is displayed on the track number display section 66 in place of the previous track number “002”. Further, the disk rotation state of the operation state display unit 64 is a low-speed rotation during normal recording.
[0074]
On the other hand, if it is determined in step F104 that the track mark key 39 or 48 has been pressed twice in succession, the process proceeds to step F107 as the important track division processing. First, the recording track number TNO_R  Is incremented. Then, the track division processing for the U-TOC sector 0 is performed in the buffer RAM 13 (F108). This is the same as in the case of normal track division, and the address at the time when the track mark key 39 or 48 is pressed is changed to the previously recorded track (recording track number TNO)._R  -1) end address, and the next address is the track to be recorded (recording track number TNO)_R  The update process with the start address of) is performed. As a result, the recorded content from that point is recorded as a new track.
[0075]
In the case of further important track division, processing for the U-TOC sector 1 is performed in step F109. This is the recording track number TNO in U-TOC sector 1._R  , That is, the table pointer P-TNA (TNO_R) To designate a certain character slot, and "! ! Write the ASCII code. In this example, “! ! ] Is used as an important track identification code.
[0076]
The display control at this time is as shown in FIG. Recording track number TNO as shown in FIG._R  If the track mark key 39 or 48 is pressed twice continuously when the display corresponding to the recording operation is performed at = 2, the track number display section 66 displays “! MARK ON!Is displayed for about 1 second. In other words, in addition to the usual “MARK ON”, “! ! ”Is displayed, it is displayed that the important track division has been performed. At this time, the operation state display unit 64 is in a display state in which the disk is rotating at high speed.
Thereafter, as shown in FIG. 6C, the track number display unit 66 displays “003” as a new track number in place of the previous track number “002”. The display is “003! ! It becomes. The operation state display unit 64 is in a display state in which the disk is rotating at a low speed as in normal recording.
[0077]
If the stop key 36 or 46 is pressed during recording (F110), the system controller 11 performs control to stop the recording operation (F111). For the U-TOC sector 0 in the buffer RAM 13, the current address is the recording track number TNO at that time._R  Processing for setting an end address corresponding to is performed (F112).
When the U-TOC update process accompanying the recording operation is completed in the buffer RAM 13, the U-TOC data is written to the disk 1 (F113).
Further, the system controller 11 in the U-TOC sector 1 “! ! ] Is recorded, and the track number (important track number) is stored in the S-RAM 11a (F114).
This completes the recording process.
[0078]
Here, recording is started with a recording operation (REC) on the virgin disc as shown in FIG. 7, and a track division operation (N-TM) and an important track division operation (IP-TM) by the track mark key 39 or 48 are performed. Suppose that after the recording is performed, a stop operation (STOP) is performed and the recording ends.
Then, as shown in the figure, tracks 1 to 4 are recorded, and further, the tracks 2 and 4 are divided by the important track dividing operation (IP-TM), so that the U-TOC sector 1 is recorded. The identification code "!" ! ] Is attached and it is positioned as an important track.
The U-TOC state in this case is shown in FIGS.
[0079]
Now, the address on the disk is A as shown in FIG.₀  ~ A₉  In FIG. 8, the U-TOC sector 0 is managed as shown in FIG.
That is, for the track 1, for example, a parts table (O1h) is designated from the table pointer P-TNO1, and the start address A of the track 1 is stored in the parts table (O1h).₀  , End address A₁  Is recorded. For track 2 to track 4, the start address and the end address are recorded in the part tables indicated by the table pointers P-TNO2 to P-TNO4, respectively. Address A₈  ~ A₉  Since it is a free area, the start address A is stored in the parts table (05h) indicated by the table pointer P-FRA.₈  , End address A₉  Will be recorded.
In the U-TOC sector 0, the normal track and the important track are not distinguished, and the distinction, that is, the identification code "!" ! ] Is recorded in the U-TOC sector 1.
[0080]
As shown in FIG. 9, when an important track is designated for track 2 and track 4, a character slot is designated by slot pointers P-TNA2 and P-TNA4 corresponding to track 2 and track 4. Here, the character slot (01h) is designated by the slot pointer P-TNA2, and the character slot (02h) is designated by the slot pointer P-TNA4. And these character slots are "!" ! ] Is recorded in ASCII code.
[0081]
FIG. 9 shows a state in which no character is input. When the user inputs a character corresponding to each track, the character is recorded in the character slot. Here, the identification code “! ! When a character is entered for a track marked with "!", The input character is "!" ! It will be recorded with. For example, when the track name “ABC” is input for track 2, the character recorded in the character slot is “! ! "ABC" or "ABC! ! It becomes.
[0082]
The designation of the important track as described above is performed by continuous operation of the track mark keys 39 and 38 at the time of recording. However, when the track division is executed by editing processing other than at the time of recording, naturally the important track is designated. You can specify. Even when the track state as shown in FIG. 7 is obtained due to the designation of the important track at the time of editing, the U-TOC management state is similarly as shown in FIGS. 8 and 9, for example.
[0083]
5). Access behavior during playback
By specifying the important track as described above, the recording / reproducing apparatus 30 of this embodiment can execute the search operation for only the important track. Hereinafter, this operation will be described. The case where the current disk track state is as shown in FIG. 7 will be described as an example.
[0084]
FIG. 10 shows processing of the system controller 11 during reproduction, and FIGS. 11 and 12 show the display state of the display unit 22 controlled by the system controller 11 during reproduction. When the reproduction operation is performed, if the TOC information has not been read for the currently loaded disc, the TOC information is first read (F201). The read TOC information is stored in the TOC area of the buffer RAM 13.
[0085]
Here, the system controller 11 receives the identification code “!” From the U-TOC sector 1 in the TOC information. ! ] Is discriminated, and the track number is stored as an important track in the S-RAM 11a. Character information is input and the character recorded in the character slot is “! ! Because it may be like "ABC", "! ! The track in which the character information including “” is recorded is determined as the important track. This process is the same as the process of step F114 in FIG. 4, and is unnecessary when the disc is played back without being replaced after recording.
[0086]
Next, playback starts. Normally, since playback starts from track 1, first the playback track number TNO_P  = 1 (F203), and reproduction from track 1 is started (F204). As the reproduction operation, when the reproduction of the track 1 is finished, the operation proceeds to the reproduction of the track 2, and although not shown, the reproduction track number TNO is reached at that time._P  Will be incremented.
[0087]
The display operation during reproduction is as shown in FIG. 11A, and the reproduction output level is displayed on the level display unit 61. In addition, the stereo mode display unit 62 and the battery remaining amount display unit 63 perform necessary displays.
In the disk-shaped operation state display section 64, as in the case of recording, the two segments facing each other in the inner six are turned on in order, so that the display is as if the disk is rotating. The During this reproduction, the disc is controlled to rotate at a low speed. However, the segment on the outer peripheral side is continuously lit, unlike during recording.
[0088]
In the time display section 65, during the reproduction, the progress time of the currently reproduced track is displayed.
The track number display section 66 shows the track number being reproduced. In this example, the playback track number TNO_P  The state when = 1 is shown.
In the disk use status display section 67, the amount of data recorded on the disk is displayed by a lit segment (black area), and the current playback position is indicated by blinking of the segment (star mark).
[0089]
If the AMS key 34 or 35 (or the operation using the key 45) is pressed during reproduction, the process proceeds from step F205 to F206.
Then, it is determined whether or not the AMS operation (track access operation) is an AMS operation designated as an important track. Here, it is assumed that when the AMS key 34 or 35 and the reproduction key 33 are pressed at the same time, an AMS operation for specifying an important track is performed.
[0090]
If it is a normal AMS operation, the AMS direction is determined in step F207. That is, if the operation is the AMS key 34, the operation is to access the next track._P  And increment the playback track number TNO._P  Is determined from the U-TOC sector 0 and access is executed (F213). Then, when the head access of the next track is completed, reproduction from that location is started in step F204.
If the AMS key 35 is operated, it is an access operation to the track head position in the return direction. Therefore, if the current position is in the middle of a certain track, the current track is returned to the beginning, access proceeds from step F209 to F213, and reproduction is started in step F204. If the AMS key 35 is operated when the current position is at the head position of a certain track, the operation is to access the head position of the previous track. For this purpose, the playback track number TNO in step F210._P  Is decremented, and the process proceeds to F213 for access, and reproduction is started in step F204.
[0091]
The display state at this time is as shown in FIG.
For example, when the AMS key 34 is operated while the track 1 is being reproduced as shown in FIG. 11A, access to the track 2 is performed. During this access period, as shown in FIG. The time display unit 65 is turned off, and the track number currently accessed is displayed on the track number display unit 66. Since track 2 is designated as an important track as shown in FIG. 7, the track number “002” and “! ! Is displayed. At this time, in order to express the access operation, the disk-shaped operation state display unit 64 displays such that the disk rotates at high speed.
[0092]
Then, when the access is completed and the reproduction of the track 2 is started, as shown in FIG. 11 (b), the operation state display unit 64 expresses the reproduction operation at a low-speed rotation and is the head of the track. The display unit 65 starts displaying from 0 minutes and 0 seconds. In the disk usage status display section 67, the segment corresponding to the head position of the track 2 blinks.
[0093]
When the AMS key 34 is further operated, a display indicating an access operation to the track 3 is performed as shown in FIG. 11D. After the access is completed, the display from the head of the track 3 is performed as shown in FIG. A display corresponding to the reproduction operation is performed. Since track 3 is not an important track, “! ! "Is not displayed.
[0094]
On the other hand, if the AMS operation is an operation accompanied by an important track designation in step F206, that is, if the AMS key 34 or 35 and the playback key 33 are simultaneously pressed, the track to be accessed is determined in step F211. As described above, since the track number of the important designated track is read in the S-RAM 11a, the system controller 11 determines the track to be accessed from the data. That is, only the important track is accessed.
[0095]
For example, if the AMS key 34 and the playback key 33 are pressed simultaneously while playing track 1 on the disc of FIG. If the track 2 is being reproduced, the track to be accessed is the track 4.
If the AMS key 35 and the playback key 33 are pressed at the same time and the track 3 is currently being played back, the access point is not the head of the track 3 but the head position of the track 2.
[0096]
When the track to be accessed is determined by the AMS access direction and the important track number read into the S-RAM 11a, the track number is reproduced as the playback track number TNO._P  Set as.
And the playback track number TNO_P  Is determined from the U-TOC sector 0 and access is executed (F213). When the track head access is completed, reproduction from that location is started in step F204.
In other words, by the above operation, the head position of the track that is regarded as an important track in front or behind the current playback position is searched, and if the user designates a certain track as an important track at the time of recording, The track can be easily played back.
[0097]
The display operation at this time is basically the same as in FIG. That is, as shown in FIG. 12A, when an important track designation AMS operation is performed during the reproduction of track 1, the access status of the next important track, track 2, is displayed as shown in FIG. The At this time, the track number display section is “002! ! It becomes.
[0098]
Then, when the access is completed and the reproduction of the track 2 is started, as shown in FIG. 12C, a display corresponding to the reproduction operation of the track 2 is performed.
If the AMS key 34 and the playback key 33 are further operated at this time, the next access is access to the track 4, so a display showing the access operation to the track 4 is performed as shown in FIG. After the access is completed, a display corresponding to the reproduction operation from the beginning of the track 4 is performed as shown in FIG. Since the track 4 is an important track, the track number display section is “004!” At the time of FIGS. ! It will be said.
[0099]
As described above, in this embodiment, by specifying an important track for a certain track at the time of recording or editing, the track can be easily played back by an access operation for specifying the important track at the time of playback. It will be very useful. Further, since important tracks are displayed on the display unit at the time of designation or playback, it is suitable for the user to confirm the operation and the designated state.
In the embodiment, since the track mark keys 39 and 48 are used as the important track designation operation means, it is not necessary to provide a dedicated operation key. Also, for the access operation for designating the important track, since the AMS key 34 or 35 and the reproduction key 33 are operated simultaneously, it is not necessary to provide a dedicated operation key.
[0100]
In the embodiment, "! ! ”Is an important track identification code, but of course it is not limited to this. For example, it may be a character string such as “IMPORTANT”. The display on the display unit may be in any display form as long as it can indicate that the track is an important track.
In addition, the designation of the important track during recording is not limited to the time of dividing the track. For example, during the recording of a certain track, the important track may be designated without dividing the track.
Further, at the time of dividing the track, not the track to be recorded but the track that has been recorded so far may be designated as the important track.
[0101]
【The invention's effect】
As described above, the recording apparatus of the present invention can update the management information in accordance with the dividing operation and divide the track. When the important track is designated in the dividing operation, the management information is updated. At this time, an identification code for identifying the divided track as an important track can be added to a predetermined area on the management information. In the reproducing apparatus, the access control means can access the track head position ahead or behind the current position with respect to the recording medium in accordance with the track access operation, and can access the recording medium in accordance with the important track access operation. The head position of the track in which the identification code for identifying the important track in the management information is recorded can be accessed in front of or behind the current position. For this reason, the user arbitrarily designates a certain track as an important track, so that the track can be easily accessed and reproduced at the time of reproduction, and the usability is remarkably improved.
[0102]
Further, by configuring the operation means for dividing the track and the operation means for designating the important track as one division operation means, the number of operation keys and the like is not increased, and the apparatus is reduced in size and cost. It does not hinder the transformation.
[0103]
In addition, the display means displays when an important track is designated and when the important track is played, indicating that the important track is designated, so that the user can easily confirm the operation and the important track. There is an advantage.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an appearance of a recording / reproducing apparatus according to an embodiment of the present invention.
FIG. 2 is a block diagram of a recording / reproducing apparatus according to an embodiment.
FIG. 3 is an explanatory diagram of a usage form of a buffer RAM of the recording / reproducing apparatus according to the embodiment.
FIG. 4 is a flowchart of track division processing at the time of recording in the recording / reproducing apparatus of the embodiment.
FIG. 5 is an explanatory diagram of a display operation in a track division process of the recording / reproducing apparatus according to the embodiment.
FIG. 6 is an explanatory diagram of a display operation at the time of track division processing of the recording / reproducing apparatus of the embodiment.
FIG. 7 is an explanatory diagram of a track state example recorded by the recording / reproducing apparatus of the embodiment.
FIG. 8 is an explanatory diagram of an example of track state management information recorded by the recording / reproducing apparatus of the embodiment.
FIG. 9 is an explanatory diagram of an example of track state management information recorded by the recording / reproducing apparatus of the embodiment.
FIG. 10 is a flowchart of access operation processing at the time of reproduction by the recording / reproducing apparatus of the embodiment.
FIG. 11 is an explanatory diagram of a display operation when accessing the recording / reproducing apparatus according to the embodiment.
FIG. 12 is an explanatory diagram of a display operation when accessing the recording / reproducing apparatus according to the embodiment.
FIG. 13 is an explanatory diagram of P-TOC sector 0 of the disc.
FIG. 14 is an explanatory diagram of a U-TOC sector 0 of the disc.
FIG. 15 is an explanatory diagram of the link form of the U-TOC sector 0 of the disk.
FIG. 16 is an explanatory diagram of a U-TOC sector 1 of a disc.
[Explanation of symbols]
1 disc
3 Optical head
6a Magnetic head
11 System controller
12 Memory controller
13 Buffer RAM
21 Operation unit
22 Display section
30 Recording / playback device
33 Play key
34,35 AMS key
39, 48 Track mark key
41 Record key
45 Playback / AMS key
66 Track number display

Claims (3)

A recording means for performing recording on a recording medium having a data area in which data is recorded, and a management area in which management data including character data indicating the contents of each track obtained by dividing the data into predetermined units is recorded;
When the track division is executed, the management data is updated, and if the newly generated track is designated as an important track, the newly generated track is identified as important. Control means for editing the identification data to be included in the character data corresponding to the newly generated track and recording it on the recording medium;
Display means for displaying the character data corresponding to the newly generated track including the identification data when the newly generated track is designated as important. Recording device. One operation means for performing an operation for dividing a track and an operation for specifying an important track;
2. The recording apparatus according to claim 1, wherein the control means determines whether the operation is to divide the track or the operation for designating the important track according to an operation method of the operation means. . When the data is divided into the management data recording medium having a management area in which management data comprising a character data indicating the contents of each track by dividing the data area and the data recorded in the predetermined unit is recorded, divided newly if the generated track is designated to be important is the character data to which the newly generated track corresponding to the track of the identification data for identifying which is the newly generated to be important by included with the edit management data editing method so as to display the character data corresponding to the designated track.

Images