CN101055745B - Method and device for recording compression audio frequency data on recording medium and method for transmitting compression audio frequency data - Google Patents

Method and device for recording compression audio frequency data on recording medium and method for transmitting compression audio frequency data Download PDF

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Publication number
CN101055745B
CN101055745B CN200510118867.8A CN200510118867A CN101055745B CN 101055745 B CN101055745 B CN 101055745B CN 200510118867 A CN200510118867 A CN 200510118867A CN 101055745 B CN101055745 B CN 101055745B
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data
transmission unit
record
audio transmission
audio
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CN101055745A (en
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井上启
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Sony Corp
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Sony Corp
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Abstract

The invention relates to a recording system. A plurality of musical programs are compressed and stored in a server in a preset manner and customers can choose the expected one from the musical programs. The musical programs are transported to all customers in the compressive state and used for recording on a recording medium. Part of the compressed musical programs can be expanded and monitored at the side of customer, thus customers can test and decide whether the musical program is the expected one or whether next frequency program can be monitored to be recorded, and therefore the recording system is conducive to customers to choose musical programs.

Description

For the method and apparatus of recording compressed audio frequency data on the recording medium
The divisional application that the present patent application is the applying date is on May 29th, 1998, application number is the patented claim of the same name of 98115403.4.
Technical field
The present invention relates to the method and apparatus of recording compressed audio frequency data and the method for transmitting compression audio frequency on the recording medium.Particularly, the present invention relates to for the method and apparatus of recording audio data and the method for transmitting audio data on the recording medium, wherein, TOC information random access recorded data can be used.
Background technology
Up to now, known one is referred to as the magneto-optic disk of mini-disk (mini-disk trade mark), and this is a kind ofly placed in the disc-shape recoding medium recording and reappear that packing box interior diameter is about 64mm.According to Adaptive Transrorm Acoustic Coding (ATRAC) system, this magneto-optic disk can record the stereo audio signal reaching about 47 minutes.Because this magneto-optic disk can with the mode recorded information different from the known conventional digital audio dish as compact disc (trade mark), so this photomagneto disk can transcribe voice data.
Similar with traditional digital audio disc, due to except for except the region of recording audio data, the region relevant to the information content table for monitoring recording voice data is additionally provided, so described magneto-optic disk allows to carry out random access to the voice data of record on it in this magneto-optic disk.Therefore, if rewrite voice data on the magneto-optic disk that this is loaded with recording audio data, likely erasing or editing music amount and reality does not rewrite voice data.
It is contemplated that a kind of music recording system, in such systems, in order to be similar to the voice data of 1/5 compression at magneto-optic disc recording, to be stored directly in server by the voice data compressed and therefrom to read, so that when not utilizing decoding or coding to carry out record to when packed data process.
In this audio sound-recording system, because packed data is by direct record, once then record compared with being expanded in reconstruction processes sound intermediate frequency data, writing time is shorter.
But, because packed data is recorded when not expanding, so record data can not be identified.
Summary of the invention
An object of the present invention is to provide a kind of recording method and device, whereby, be recorded in the process of magneto-optic disk by audio compressed data, when recording content and being identified, voice data can be recorded on described magneto-optic disk.
Another object of the present invention is to provide a kind of recording method and device for voice data and transmission method, wherein, when the structure of supplying the contents such as such as audio frequency adopts described magneto-optic disk, multiple voice data be pre-stored in server neutralization only have user to require the voice data of content is read by from described server, for the magneto-optic disc recording had this user.
On the one hand, the invention provides a kind of audio sound-recording system, comprising: memory storage, for storing by multiple audio programs of predetermined compression process compression; Selecting arrangement, for selecting in described compressed audio program desired one from described multiple compressed audio program; Transmitting device, for transmitting the compressed audio program selected by described selecting arrangement; Expanding unit, for expanding the described multiple compressed audio programs provided by described memory storage; Pen recorder, for recording the predetermined compressed audio program provided by transmitting device; With, monitoring arrangement, during for being just recorded on a recording medium in predetermined audio program, monitors the compressed audio program provided by expanding unit.
On the other hand, the invention provides a kind of way of recording, comprising: in the multiple compressed audio programs from the storer being stored in a server, select desired compressed audio program; Compressed audio program desired by transmission, data size information, track part pattern and the track part title relevant to described desired compressed audio program; The compressed audio program selected by described selection step, data size information, track part pattern and the track part title relevant to described desired compressed audio program is received from the storer of described server; Table content information is produced according to described data size information; The multiple selected compressed audio programs provided from the storer of described server are provided; The compressed audio program provided from described server, track part title and the table record of described content information that produces are taken on a recording medium; Further, while selected audio program is being recorded on described recording medium, the audio program be expanded is being monitored.
Utilize audio data recording device of the present invention, during utilizing recording device records voice data, reproducer is utilized to make the voice data corresponding to by the audio compressed data of recording device records be expanded and reappear, thus the voice data recorded during allowing to understand record.
Utilize audio data recording device of the present invention, can select and reappear the part voice data needing record.
Utilize audio data recording device of the present invention, can check relevant for information about to the voice data needing to record during recording.
Utilizing according to audio recording method of the present invention, can expanding and reappear the voice data corresponding to the audio compressed data for recording, so that the voice data be recorded during allowing to understand record.
Utilize according to audio recording method of the present invention, if multiple voice data is recorded, respective voice data can be differentiated each other.
Utilizing according to audio recording method of the present invention, can selecting and the voice data of reconstructing portion for recording.
Utilizing according to audio recording method of the present invention, the relevant data relevant to the voice data for recording can being checked during recording.
Accompanying drawing explanation
Fig. 1 is a block diagram, for representing the whole recording system used in the present invention;
Fig. 2 diagrammatically illustrates the data structure used on magneto-optic disk of the present invention;
Fig. 3 diagrammatically illustrates the data structure used on magneto-optic disk of the present invention equally;
Fig. 4 shows and is using data structure relevant to the U-TOC sector 0 as management area on magneto-optic disk of the present invention;
Fig. 5 shows the data structure of a slit (slot) on the U-TOC as the management area used on magneto-optic disk of the present invention;
Fig. 6 shows in the data structure as the track part pattern used on the U-TOC of a magneto-optic disk management area of the present invention;
Fig. 7 diagrammatically illustrates the linking status of each slit on the U-TOC as a management area on use magneto-optic disk of the present invention;
Fig. 8 shows the data structure relevant to U-TOC sector 1, and this U-TOC sector 1 is using in a management area on magneto-optic disk of the present invention;
Fig. 9 shows for the relevant data structure in U-TOC sector 2, and this U-TOC sector 2 is using a management area on magneto-optic disk of the present invention;
Figure 10 has gone out for the relevant data structure in U-TOC sector 4, and this U-TOC sector 4 is using a management area on magneto-optic disk of the present invention;
Figure 11 shows the detailed diagram of pen recorder shown in Fig. 1;
Figure 12 A shows according to the connection status of the present invention between audio transmission unit 10 and record cell 20;
Figure 12 B shows a sequential chart, for representing that audio compressed data ATRAC is transferred to record cell 20 from audio transmission unit 10, request signal Data Req is transferred to audio transmission unit 10 and the timing of the process on record cell from record cell 20;
Figure 12 C shows a sequential chart, for representing that a command signal Command is transferred to record cell 20, responsion signal Ack and is transferred to audio transmission unit 10 and the timing of the process on record cell from record cell 20 from audio transmission unit 10;
The flow process of Figure 13 shows the recording process performed by the record cell used in the present invention;
Figure 14 A shows and is stored in the management information using the music program in server of the present invention relevant;
Figure 14 B shows and is recorded in the management information using the music program on CD of the present invention relevant;
Figure 15 A shows the sequential chart relevant to the audio compressed data ATRAC being transferred to record cell 20 from audio transmission unit 10;
Figure 15 B shows the sequential chart of the request signal DataReq being transferred to audio transmission unit 10 from record cell 20;
Figure 15 C shows the sequential chart relevant to the command signal Command being transferred to record cell 20 from audio transmission unit 10;
Figure 15 D shows the sequential chart relevant to the responsion signal Ack being transferred to audio transmission unit 10 from record cell 20;
Figure 15 E shows the sequential chart relevant to Timing Processing on record cell;
Figure 16 A shows the sequential chart relevant to the command signal Command being transferred to record cell 20 from audio transmission unit 10;
Figure 16 B shows the sequential chart relevant to the responsion signal Ack being transferred to audio transmission unit 20 from record cell 20;
Figure 16 C shows the sequential chart relevant to the Timing Processing on record cell;
Figure 16 D schematically illustrates the content of the management information TOC formed on CD D;
Figure 17 A shows the sequential chart relevant to the command signal Command being transferred to record cell 20 from audio transmission unit 10;
Figure 17 B shows the sequential chart relevant to the responsion signal Ack being transferred to audio transmission unit 10 from record cell 20;
Figure 17 C shows the timing relevant to the Timing Processing on record cell;
Figure 17 D shows the content of the management information TOC formed on CD D;
Figure 18 A shows the sequential chart relevant to the command signal Command being transferred to record cell 20 from audio transmission unit 10;
Figure 18 B shows the sequential chart relevant to the responsion signal Ack being transferred to audio transmission unit 10 from record cell 20;
Figure 18 C shows the sequential chart relevant to the Timing Processing on record cell;
Figure 18 D schematically illustrates the content of the management information TOC formed on CD D;
Figure 19 shows the content recorded on CD D;
The block diagram of Figure 20 shows second embodiment of the invention;
Figure 21 A shows the sequential chart of the ATRAC data being supplied to record cell 20 from audio transmission unit 10;
Figure 21 B shows the sequential chart of the request signal DataReq being transferred to record cell 20 from audio transmission unit 10;
Figure 21 C shows the sequential chart of the ATRAC being supplied to reproducing unit 41;
Figure 21 D shows the sequential chart of the voice data launched by reproducing unit 41;
Figure 21 E shows the sequential chart of the request signal DataReq being transferred to audio transmission unit 10 from reproducing unit 41;
Figure 22 A shows the transmission process flow process being transferred to the packed data of record cell 20 from audio transmission unit 10;
Figure 22 B shows the transmission process of the packed data being transferred to reproducing unit 41 from audio transmission unit 10;
The sequential chart of Figure 23 A is owing to illustrating the scope of the packed data being transferred to reproducing unit 41 from audio transmission unit 10;
Figure 23 B shows the sequential chart of the packed data being transferred to reproducing unit 41 from audio transmission unit 10;
The flow process of Figure 24 A is for explaining the transmission process of the packed data being transferred to record cell 20 from audio transmission unit 10;
The flow process of Figure 24 B is for representing the transmission process being transferred to reproducing unit 41 from audio transmission unit 10;
The sequential chart of Figure 25 A is for representing the scope being transferred to the packed data of reproducing unit 41 from the defeated unit 10 of audio frequency;
The sequential chart of Figure 25 B is for explaining the scope of the packed data being transferred to reproducing unit 41 from audio transmission unit 10;
Figure 26 is a table, for illustrating the multiple monitoring ranges in front setting relevant to each music number;
The sequential chart of Figure 27 A represents from audio transmission unit 10 and is transferred to reproducing unit 41 and the scope of the packed data having user to specify;
The sequential chart of Figure 27 B represents the expansion of the packed data being transferred to reproducing unit 41 from audio transmission unit 10;
The flow process of Figure 28 shows the processing sequence for being undertaken monitoring by the packed data of expansion audio program, and corresponding programme is recorded and is set to reproducing unit 41 from audio transmission unit 10;
Figure 29 is a table, the table show the change pre-setting satellite information and monitoring range for each music number.
Embodiment
Explain the most preferred embodiment according to audio sound-recording system of the present invention with reference to the accompanying drawings in detail.
Fig. 1 shows one and uses audio sound-recording system of the present invention.Audio sound-recording system 1 has: audio transmission unit 10, comprises primary controller 11, server 12, starts input block 13 and display unit 14; Record cell 20, at portable recording medium identifying recording layer; With stube cable 2, for interconnect audio transmission unit 10 and record cell 20.
In this audio sound-recording system 1, voice data is pre-stored in the server 12 of audio transmission unit 10, so user can select required voice data to be recorded on the recording medium from the voice data be stored in server 12.
That is, this audio sound-recording system 1 is a system by medium sound intermediate frequency data content that the recording medium that had user by audio data recording provides music content instead of supply to be stored in such as compact disc or from audio cassette to user.Such as, this audio sound-recording system 1 can be installed in railway station or retail shop to provide chargeable music content or the music broadcast for Content Management object to user.
The scheme of content providing system of the present invention will be explained below.
In the server 12 of audio sound-recording system 1, such as finally hit each music content comprising the music number of a series of music in 100 number of curve and stored by as voice data.User utilizes display 14 to confirm the content provided by audio sound-recording system 1, if he or she finds required content, he or she uses startup input block 13 to select one or more content.Recording medium D installs on record cell 20 and also starts input block 13 to start record by user.
If user starts record operation.The primary controller 11 of audio transmission unit 10 provides by user from being stored in the contextual audio data of specifying server 12 content to record cell 20.Record cell 20 can in posting field to one of recording medium by the audio data recording that provides from audio transmission unit 10.
When the end of record (EOR) of the voice data of content needed for user, audio sound-recording system finishing provides content.
In the following describes of audio sound-recording system 1 of the present invention, assuming that by the recording medium of present example audio sound-recording system process be one provide with the form being referred to as mini-disk (trade mark) record and reproducible magneto-optic disk.
The magneto-optic disk being referred to as mini-disk is that a diameter is about 64mm and is placed in the disc shape media of packing box, use Adeptive Transform Acoustic Coding (ATRAC), described dish can record the stereo audio data reaching 74 minutes.This magneto-optic disk being referred to as mini-disk is simply referred to as CD D here.
Because audio sound-recording system 1 records the voice data according to ATRAC system compresses on CD D, so the voice data being stored in content in server 12 is by advance according to ATRAC system compresses.Being directly recorded by the voice data compressed according to ATRAC system CD D does not utilize decoding or coding process voice data.Here ATRAC data are referred to as by the voice data of ATRAC system compresses.Thus, the stube cable 2 for voice data is transferred to record cell 20 from audio transmission unit 10 transmits ATRAC data.It should be noted that control command or the order data (Command) of such as CD D contents table (TOC) data are transmitted on stube cable 2 by according to the host-host protocol will explained below.
The data layout of the CD D that explained later uses in audio sound-recording system 1.
Data can write CD D in units of the integral multiple of cluster.Note, be recorded in the process of every intrafascicular ATRAC data in reproduction the voice data produced about 2.04 seconds.
It should be noted that often to restraint and be made up of according to the host sectors of the voice data of ATRAC system compresses for recording 3 chainning sectors, a sub-data sector and 32.The unit that each sector is made up of 2 352 byte datas.
Form due to CD D uses the error correcting system of Advanced Cross Interleaving Reed SolomenCode (ACIRC) system, so chainning sector is used as and has been allocated for the sector that in described bundle, error correction is staggered.That is, chainning sector is a loss sector, for considering interlocking in error correction, to carry out data modification on bundle basis.
Subdata sector (subdata) is a reserve area.
CD D processes 424 byte datas according to ATRAC system compresses with the unit being referred to as sound group.The byte data of 212 is distributed to left and right sound channel by this sound group.On the basis of expansion, the packed data based on sound group corresponds to 512 samplings of left and right sound channel.These 512 samplings of data correspond to 2048 byte datas, particularly, and 512 sampling X16 position X2 sound channel ÷, 8=2048 bytes.11 sound groups form two bundles, as shown in Figure 3.
The posting field of CD D be divided into program area for recording the voice data according to ATRAC system compresses, as the management area for recording the relevant management data of voice data to management accounts in program area user content table (U-TOC) region and control contents table (P-TOC) region as giving of guidance field.
In this CD D, by amendment U-TOC information instead of physically wipe the erasable or editing music number of actual music data.Such as, when CD above-noted has 5 music numbers, if be defined as can posting field for the start address of the 3rd music number and end address, so, the 3rd music number just can not be reproduced.Therefore, when recording ATRAC data on CD D, this U-TOC information just must be modified.This U-TOC of explained later.The unit voice data be recorded on CD D is simply referred to as " track part ".This track part is the music number corresponding with the music content provided by audio sound-recording system 1 of a unit.
The U-TOC of CD D by from U-TOC sector 0 to U-TOC sector 15 altogether 16 sectors form.U-TOC sector n (wherein, n represents 1-15) is simply expressed as U-TOCn.
Fig. 4 shows the data be recorded on U-TOC0.The data be recorded on U-TOC0 are divided into multiple byte and are represented as a memory block for simplicity.The memory block number regulation of each memory block as shown in Figure 4 from 1 to 4 from the numeral of 0 to 587 and horizontal ordinate on ordinate.Same regulation is also for U-TOC1 etc.
In U-TOC0, before ClusterH and CiusterR for regulation TOC0 address information, record the title data of 12 bytes.In TOC0, record a maker code for regulation CD D fabricator, for a TNO of the first track part track part number of regulation CD D from the 7X1 of memory block and the last TNO for specifying last track part track part number.In TOC0, being used sector and being recorded in respectively in 8X4 and 10X4 of memory block for the DiscSerialNo of regulation CD D ordinal number for regulation sector using state.
In U-TOC0, also record the DiscID of the ID number for regulation CD D, for specify wherein to have recorded one for be recorded in the memory block of the region start address of the fail address information that CD D produces pointer P-DFA (pointer for fault zone), for specify memory block using state pointer P-EMPTY (pointer for empty memory block) and can the pointer P-FRA (pointer for free space) of memory block of the region start address of posting field from the 11X1 of memory block for managing for specifying wherein to have recorded.In U-TOC0, also record one for specifying the pointer P-TNOn of the memory block of the start address it being recorded each track part from memory block 12X2 to memory block 75X4 recorded on CD D, wherein n represents the track part number of each track part.Due to 255 track parts can be provided on CD D, so n is the integer from 1 to 255.
In U-TOC0, also record start address and end address, link information Link-P and the track part pattern (Trackmode) from memory block 78X1 to memory block 587X4 of each track part.In U-TOC0, also record the 255X4 memory block for recording start address and end address further.Start and end address is recorded in the memory block relevant to each track part.
Therefore, above-mentioned P-DFA, P-EMPTY and P-FRA each in the pointer that records point out the memory block of the start address represented by memory block 78X1.
As shown in Figure 5, above-mentioned start and end address is by 3 byte=24 bit representations.In start and end address, the address of bundle address, sevtor address and second group is recorded in first 14, then 6 and 4, end respectively.
Track part pattern (Tackmode) by byte=8 bit representation, as shown in Figure 6.In track part pattern (Tackmode), record protection information, repeat protection information, generation information, audio-frequency information, erasing retain information, monophonic or stereo information and forte information be respectively recorded in first, second, the 3rd, the 4th, the 5th and the 6th, the 7th and the 8th.That is, the relevant information being applicable to each track part is recorded in track part pattern (Tackmode).
Link information P-Link be one for when same track part is not recorded on CD D as continuous data stream, when next start address data is recorded, namely carry out the pointer followed the tracks of when the data of same track part are dispersed and recorded in video disc recording region.Such as, if when a reproduction track part, be reproduced after needing the end address represented in the 78X1 of memory block from the start address of memory block 586X1, the link information Link-P of memory block 80X4 specifies memory block 581X1.
That is, in CD D, data need not as continuous data stream record on the recording medium, but continuous data string can by direct record.If data are by direct record, then point out described data continuously by this link information P-Link, by return period by sense data instantaneous to be stored in memory block and by with the speed faster than read-out speed by described data write memory block, described continuous data can be reappeared incessantly.
Be written in the data of front record, by redundant area predetermined bits can effectively be realized described record when not erasing redundant area by posting field (P-FRA) if the data being shorter than logging program cross.
As can the example of posting field P-FRA, explain the method for linking discrete areas referring to Fig. 7.
If 03h be recorded in for manage U-TOC0 can posting field memory block guiding end position P-FRA in, then the first access memory block relevant to 03h.
The start and end address recorded in the 03h of memory block specifies to record IP address and the end address of fraction part in track part on the disc.
The link information be recorded in 03h specifies next memory block number of following memory block, and described next memory block is here 18h.
The region that the IP address of the memory block 18h specified by memory block 103h link information and end address specify can be judged as being one can posting field.In addition, by following the tracks of the memory block 1Fh described in the link information of memory block 18h, the region specified by IP address and the end address of memory block 1Fh can be judged as being one can posting field.
Further, by following the tracks of the memory block 2Bh described by the link information in the 1Fh of memory block, the region specified by IP address and the end address of memory block 1Fh can be judged as being one can posting field.The memory block address of track record in link information as described above, follows the tracks of memory block, until link information equals zero.
By follow the tracks of from by the memory block that P-FRA specifies until link information equals the memory block of Null (=00h), can form dispersed record dish on track part the multiple fraction part in memory block on link.
Although P-FRA is used as the example made an explanation, the fraction part that dispersion exists can be linked for DFA, P-EMPTY and T-TNO0 to 255 simply.
Fig. 8 shows the data recorded on described U-TOC1.
In U-TOC1, the title of each track part and the title of CD D are integrally managed.
If magnetic track record is a voice data, the title of CD D integrally and the title of each track part correspond respectively to album title and singer's title and the several title of music.
Alphabetical information for each track part is recorded in the memory block specified by P-TNAn (n=1-255), if there is a large amount of letters, link information is used to link multiple memory block to perform record.
Fig. 9 shows the data be recorded in U-TOC2.
In U-TOC2, with the similar structure management of above-mentioned U-TOC1 for being recorded in writing time and the data of each program in described program area.
Figure 10 shows the data be recorded in U-TOC4.
In U-TOC4, be recorded in the title of each program in program area with the structure management being similar to above-mentioned U-TOC0, therefore, Japanese syllabogram and Chinese character can be used as the title font of whole CD D.
Below by referring to the structure explaining the audio sound-recording system 1 being attached with record cell 20 referring to Figure 11 in detail.
The block diagram of Figure 11 shows and uses audio sound-recording system 1 of the present invention.This audio sound-recording system 1 is made up of audio transmission unit 10, record cell 20 and the link cable 2 that makes audio sound-recording system 1 and record cell 20 interlink.Audio transmission unit 10 has primary controller 11, server 12, starts input block 13 and display unit 14.Record cell 20 is used at a portable recording medium identifying recording layer.
Record cell 20 comprises for storing random access memory (RAM) 22 from audio transmission unit 10 and a Memory Controller 21 for control RAM22.Record cell 20 also comprise a coding/decoding circuit 23 for decoding and coded data and one for drive the magnetic head drive circuit 24 of magnetic head 25 and one for CD D irradiating laser so that the light picker 26 of detection of reflected light.Record cell 20 also comprises one for reappearing focus error signal FE, pushing away the RF amplifier 27 of-La signal PP and the next freely optomagnetic play signal MO of the reflected light of described light picker 26 detection, record cell 20 also comprises one at the address decoder 28 reappearing the signal corresponding with the unstable groove formed in CD guide channel from RF amplifier 27 and on the basis pushing away-La signal PP of decoding ADIP, and one for driving the spindle motor 29 of CD D rotatably.Record cell 20 also comprises one for the clue unit 30 along CD D diameter radial motion light picker 26.
Record cell 20 comprise one for focus error signal (FE) and push away-La signal (PP) basis on control servo circuit 31 and the system controller 32 for control store controller 21, decoding/coding circuit 23 and servo circuit 31 of focus servo, screw rod/leading screw servo and main axle servo.
Laser from laser diode is irradiated on CD D through object lens by light picker 26.Light picker 26 also detects the reflected light from CD D by photodetector and transmits one and detects electric current to RF amplifier 27.
RF amplifier 27 produces focus error signal (FE), pushes away-La signal (PP) and optomagnetic play signal (MO) on the basis of the detection electric current from photodetector.RF amplifier 27 sends the focus error signal (FE) produced to servo circuit 31, will push away-La signal (PP) simultaneously and sends address decoder 28 and servo circuit 31 to and send optomagnetic play signal (MO) to coding/decoding circuit 23.
Servo circuit 31 provided focus error signal (FE) and push away-La signal (PP) basis on drive object lens to perform the tracking and the focus servo control that are radiated light beam on CD D through the biaxial unit of light picker 26.Servo circuit 31 drive wire cable elements 30 on the basis pushing away-La signal (PP) is used in the screw rod/leading screw servocontrol of the radial drive light picker 26 of CD D to perform.Servo circuit 31 performs a Spindle servo systems on the basis of the spindle error signals from the optical disk rotary direction circuit do not illustrated, rotates to make CD D for drives spindle motor 29 with a constant linear velocity (CLV).
Address detection device 28 produces address information according to swinging corresponding swinging signal with the groove formed in CD D guide channel.
Optomagnetic play signal (MO) from RF amplifier 27 is converted to twin-stage signal and according to 8 to 14 these twin-stage signals of modulation (EFM) system decoding, corrects according to Cross-Interleaved Reed-Solomen Coding (CIRC) decoding error simultaneously by coding/decoding circuit 23.Error correction code to be attached to according to CIRC system the tracer signal that provides from Memory Controller 21 by coding/decoding circuit 23, and according to the signal that EFM system modulation generates, to send tracer signal to magnetic head drive circuit 24.
Magnetic head drive circuit 24 drives magnetic head 24 on the basis of the tracer signal from coding/decoding circuit 23, to be applied on CD D by modulated magnetic field by means of recording described tracer signal.
Memory Controller 21 controls the writing and reading of the ATRAC data be stored on RAM22.This Memory Controller 21 makes the ATRAC data provided by audio transmission unit 10 be stored in RAM22 by instantaneous, to send the data of instantaneous storage to coding/decoding circuit 23 continuously.
The empty device 32 processed of system controls the record cell 20 in entirety.Such as, system controller 32 control store controller 21, coding/decoding circuit 23 and servo circuit 31.System controller 32 also controls to be used for and the circuit of audio transmission unit 10 exchanging control data, about this point, after will make an explanation.
Utilize said structure, the record cell 20 of audio sound-recording system records the ATRAC data that audio transmission unit 10 transmits from CD D.
The method for interchanging data between the audio transmission unit 10 and record cell 20 of audio sound-recording system 1 is explained below in conjunction with Figure 12 A to 12C.
Audio sound-recording system 1 has the link cable 2 for interconnect audio transmission unit 10 and record cell 20.Link cable 2 forms as the ATRAC line 2a of the ATRAC data of the audio compressed data transmitted to record cell 20 from audio transmission the unit 10 and Data Req line 2b for transmitting the ATRAC request signal (Data Req) that record cell 20 transmits to audio transmission unit 10 by for transmitting.
The ATRAC data corresponding with the content be stored in server 12 are sent to the Memory Controller 21 of record cell 20 by the primary controller 11 from audio transmission unit 10 on ATRAC line 2a.In addition, ATRAC data request signal (Data Req) being used to regulation ATRAC request of data is sent to the primary controller 11 of audio transmission unit 10 through Data Req line 2b by the system controller 32 from record cell 20.Namely, because ATRAC data are transmitted by according to the amount of establishing of giving as a unit, so, if the ATRAC data being transmitted all and being written in RAM22 can be integrally written on CD D, so, this request signal (DataReq) is sent to audio transmission unit 10 to produce a request for next data by ATRAC data record unit 20.If the ATRAC data being read into RAM22 are not also recorded on CD D, the request signal arriving audio transmission unit 10 is configured to transmit stand-by state.
The sequential chart of Figure 12 B shows the relation between ATRAC data and request signal (Data Req).
If the recording status of record cell 20 is normal, record cell 20 sends request signal (Data Req) to audio transmission unit 10 at time t11 place.When providing request signal (Data Req) signal, audio transmission unit 10 starts the ATRAC data of scheduled volume to be supplied to record cell 20 at time t12.When providing ATRAC data, record cell 20 suspends providing of request signal (DataReq) at time t13.
In addition, if the recording status of record cell 20 is abnormal, request signal (Data Req) is not had to send audio transmission unit 10 to from record cell 20, as pointed by time t14 and t15.So there is no ATRAC data and sent to record cell 20 by from audio transmission unit 10.If request signal (Data Req) is not transmitted by from record cell 20 within one period of schedule time, so, audio transmission unit 10 no longer will continue record operation.
Time domain from time t15 to time t16 specifies a time interval, and during this time interval, it is normal that the ATRAC data to record cell 20 provide.
If transmitted by the request signal pointed out from time t16 to t17 (Data Req), but do not transmit ATRAC data from audio transmission unit 10 in the given time, so, record cell 20 transmits data write stand-by state, such as record halted state, to wait for ATRAC data.If ATRAC data are transmitted, record cell 20 starts write operation, as pointed by time t17.If write stand-by state continues for some time, so, audio sound-recording system 1 judges occurred some trouble thus no longer proceeded process.
Thus, audio sound-recording system 1 can utilize the record cell 20 sending ATRAC data request signal (Data Req) to audio transmission unit 10 to record ATRAC data easily.
Audio sound-recording system 1 also have one for transmit such as from audio transmission unit 10 be supplied to the control command of the TOC order of record cell 20 or other orders order wire COMMAND2c and for transmitting from audio transmission unit 10 to the ACK line 2d of the answer signal (ACKNOWLEDGE) of the order data of record cell 20, as illustrated in fig. 12.
The order data of the TOC information produced by the primary controller 11 of audio transmission unit 10 or the such as data size of various content ATRAC data is sent to the system controller 32 of record cell 20 through order wire 2c.If record cell 20 terminates the process relevant to order data, answer signal (ACKNOWLEDGE) is sent to the primary controller 11 of audio transmission unit 10 by through ACK line 2d from the system controller 32 of record cell 20.
Particularly, the sequential chart of Figure 12 c shows the relation between order data and answer signal (ACKNOWLEDGE).
First, at time t21, audio transmission unit 10 sends the order data pre-set to record cell 20.When stopping providing order data, record cell 20 performs the process relevant to provided order data at time t22.At the end of the process relevant to provided order data, at time t24, record cell 20 transmits a reset command to record cell 20.On the basis receiving reset command, record cell 20 stops providing of answer signal (ACKNOWLEDGE) at time t24.If provide order data, but do not provide answer signal (ACKNOWLEDGE) from record cell 20 within a predetermined time, audio transmission unit 10 is believed and has been occurred some trouble and therefore interrupt processing.
Table 1 below illustrates the order data being supplied to record cell 20 by audio transmission unit 10 through COMMAND line 2.
Table 1
Command name Order data (1 type) Function
SETUP 1 Record cell 10 is set as record halted state
ATART 2 Start record
Stop 3 End process
TOC0info 4 TOC0 information (track part size and track part pattern)
ACK-RESET 8 ACK resets
ALright ob The recording status be identified
Title 83 Name information
Set order (SETUP) be one for record cell 20 being set as stand-by state, namely recording the order of halted state.On the basis receiving set order (SETUP), record cell 20 is in record halted state.Specifically, set order provides as byte " 01 " data.
Initiation command (START) is one and records the order started for regulation record cell 20.On the basis receiving initiation command (ATART), record cell 20 is enabled in the record of the ATRAC data on CD D.Specifically, this initiation command (ATART) provides as byte " 02 " data.
Cease and desist order (ATOP) be the order that a regulation terminates record cell 20 and certain order relevant treatment.Cease and desist order on the basis of (STOP) in reception, record cell 20 suspends the record started by initiation command (START).Specifically, cease and desist order (STOP) provide as byte " 03 " data.
TOC0 message command (TOC0inf) be one for specifying to be recorded in the order of information in U-TOC sector 0 on CD D.In reception TOC0 message command (TOC0inf) with close in the track part size of described order and the basis of track part pattern information, record cell 20 obtains record start and end address described TOC data to be recorded in described TOC from track part size.
That is, record cell 20 itself is utilized to produce inherent TOC0 information, to make it be recorded on CD D.But if provide the ATRAC data of multiple content from described audio transmission unit 10, these data are sent to record cell 20 by as continuous data stream, like this, the node between described content just can not be identified and therefore track part information can not be produced.Therefore, audio transmission unit 10 transmits track part pattern and track part size, to point out that the data size of the data stream length for specifying the data corresponding with corresponding contents is as TOC0 message command (TOC0inf).On the basis of TOC0 message command (TOC0inf), record cell 20 produces and will be recorded in the TOC0 information on CD D.
Particularly, track part number TOC0 message command (TOC0inf) is provided by " 04 " data as a byte.
Described order (TNO) is the order of the track part number of ATRAC data will be recorded for regulation.Follow on the basis of track part number of this order in reception track part number order (TNO) and the next one, record cell 20 performs and follows the relevant process of exercise question order (Title) to the next one on track part number.Specifically, track part number order (TNO) is provided by as a byte data " 05 ".
Reset command (ACK-RESET) is the order of the answer signal (ACKNOWLEDGE) that is provided by record cell 20 for resetting.When providing this reset command (ACK-RESET), record cell 20 suspends providing of answer signal (ACKNOWLEDGE).Particularly, reset command (ACK-RESET) provides as a byte data " 08 ".
Recording status confirm order (ALRIGHT) be one for confirming the order of record cell 20 recording status.Confirm that in accepting state on the basis of order (AIRIGHT), record cell 20 transmits answer signal (ACKNOWLEDGE) to audio transmission unit 10.Specifically, recording status confirms that order (ALRIGHT) provides as a byte data " 0b ".
Exercise question (Title) order be one for providing the topic information that will be recorded in TOC1 and TOC4 of CD D.Character string information and character data is provided near exercise question order (Title).On the basis receiving alphabetic string information and character data, record cell 20 records the information of each track part in TOC1 and TOC2 being used for CD D.Specifically, exercise question order (Title) provides as a byte data " 83 ".
Below with reference to the contents processing of the flow-interpret audio sound-recording system 1 shown in Figure 13.
When user selects one or more content of record that needs with when terminating such as CD D to be installed to the initial setting operation on record cell 20 from the server 12 CD D, audio sound-recording system 1 processes from step S11, as shown in figure 13.
In step S11, audio sound-recording system 1 inquires whether user utilizes display unit 14 to perform error-detecting.If user uses startup, input block 13 inputs the need of carrying out error-detecting, and process proceeds to step S12.To be explained in detail described error-detecting below.
In step S12, audio transmission unit 10 provides set order (SETUP) through COMMAND line 2c to record cell 20.When this set order (SETUP) be provided by audio transmission unit 10 time, record cell 20 recording status of CD D is set as record halted state and through ACK line 2d transmit answer signal (ACKNOWLEDGE) to audio transmission unit 10.In step S13, audio transmission unit 10 carries out checking to judge whether to transfer described response (ACKNOWLEDGE) signal from record cell 20.If described response (ACKNOWLEDGE) signal is transmitted, process proceeds to step S15.If do not transmit described response (ACKNOWLEDGE) signal in the given time, process is transformed into step S14.
In step S14, audio transmission unit 10 think utilize the record of record cell 20 on CD D be caused by described trouble and undesirable and on display 14 show an error message to terminate described process.
In step S15, audio transmission unit 10 transmits initiation command (START) through COMMAND line 2c to record cell 20.On the basis receiving request signal (Data Req), audio transmission unit 10 sends the ATRAC data of predetermined volumes to record cell 20 at every turn.On the basis receiving ATRAC data, what data were recorded in CD D by record cell 20 can in posting field.
Meanwhile, if user specifies multiple track part, if namely multiple content is designated, then audio transmission unit 10 sends the ATRAC data as continuous data stream to record cell 20.The dish TOC information preset also is stored in external memory storage etc. by record cell 20, so if not regular execution record on CD D, described CD D can return to the state of giving indicator.
If the record of ATRAC data starts in step S15, so, process is transformed into step S16.
In step S16, audio transmission unit 10 transmits record on COMMAND line 2c to start to confirm that order ALRIGHT is to confirm the recording status of record cell 20.If audio transmission unit 10 provides an answer signal (ACKNOWLEDGE) by record cell 20 and confirms that recording status is normal, process is transformed into step S17 to confirm that described record terminates, and process turns back to step S16 to confirm whether described record normally performs.That is, the process of step S16 and S17 to confirm in a predetermined interval whether whether normal the and described record of described record terminates.
If record cell 20 thinks that described record is irregular, process and turn to step S14 so that interruption logging process from step S17.Now, in external memory storage etc., for subsequent use being restored on CD D in front TOC information gives recording status for being returned to by CD D.
If it judges that described record terminates, process and be transformed into step S18 from step S17.
In step S18, audio transmission unit 10 through COMMAND line 2c will cease and desist order (STOP) send record cell to.On the basis receiving STOP order, record cell 20 terminates the record of ATRAC data.When providing STOP order in step S18, process is transformed into step S19.
In step S19, audio transmission unit 10 provides TOC0 message command (TOC0inf), track part dimension information, exercise question order (Title), exercise question letter and the quantity of character data or necessary TOC data.
On the basis receiving TOC information, record cell 20 records the data of U-TOC0 to the U-TOC4 from CD D on the basis of provided TOC information.Meanwhile, the basis of the track part dimension information provided near TOC0 message command (TOC0info) is provided the start and end address of each track part.That is, because ATRAC data are provided by as a storage area data stream, this data stream is divided into described data size to produce TOC information one by one track part.
After step S19 provides necessary TOC information, process forwards step S20 to.
In step S20, audio transmission unit 10 judges whether user performs error-detecting in step S11 setting.If user has set execution error-detecting, then process has forwarded step S21 to, otherwise process forwards step S23 to.
In step S21, audio transmission unit 10 sends error-detecting order to record cell 20 through COMMAND line 2c.On the basis receiving error-detecting order, record cell 20 reads recorded data to check and whether there is error in recorded data.
When starting the error-detecting performed by record cell 20, audio transmission unit 10 is in stand-by state in step S22, until error-detecting terminates.On the basis that round-off error checks, process forwards step S23 to.
In step S23, audio transmission unit 10 shows test results on display 14.If error check result represents the error existing and cause in record data, then such as subsequent use in external memory storage record TOC data of giving are recorded on CD D.
After the test result showing step S23, audio sound-recording system 1 ends process.
By the process from step S11 to S23, audio sound-recording system 1 correctly can record ATRAC data on CD D.
Above-mentioned from the process of step S11 to S23, after have recorded all ATRAC data, necessary TOC information is transmitted to record cell 20.But audio sound-recording system 1 can also transmit TOC information before audio transmission unit 10 transmits ATRAC data to record cell 20.
That is, after end setup and before transmitting initiation command (START), between step S13 and the process of step S14, namely perform the process of step S19.Due to TOC information on CD D, record ATRAC data after recorded by record cell 20, so the TOC information formerly provided must be stored in such as external memory area.Utilization remained on the TOC information in such as external memory area in advance before record ATRAC information, the title of the music number be recorded can be shown on the display unit.
Utilize audio sound-recording system 1 can also walk abreast while audio transmission unit 10 provides ATRAC data to record cell 20 and TOC information is provided.
That is, because ATRAC data and order are transmitted by respectively through ATRAC line 2a and COMMAND line 2c, so, can the process of parallel execution in step S16 and S17 and the process in step S19, shorten data transmission period with this.Record cell 20 is needed TOC information to be kept in such as external memory area in this case, to make TOC information be recorded on CD D after have recorded all ATRAC data.
Above-mentioned from the process of step S11 to S23, the ATRAC data corresponding with multiple content are processed into storage area data stream and the information produced required for TOC information is sent to record cell 20 from audio transmission unit 10 respectively.But when multiple content is specified by user, it can also make audio sound-recording system 1 record the ATRAC data corresponding with memory block content on CD D, the ATRAC data that the TOC that generation and record are recorded continuously is corresponding to content below with record.
Above-mentioned process can be realized by the process from step S11 to S23 forming the loop of repeating to another content from a content.
The record of two music numbers of music content on CD D is explained below in conjunction with described sequential chart.
Referring to Figure 14 A, store in server 12 exercise question for " Bye-bye ", track part pattern be that " a6 " and track part are of a size of the first content of " 000.2.00.00 ", exercise question is " Hello ", track part title (trmd) be " a6 " and track part be of a size of second content of " 0010.2f.0a " and exercise question be " Moyning ", track part pattern (trmd) is the 3rd content that " 86 " and track part are of a size of " 0020.1e.00 ".
As on the CD D of recording medium, record two music numbers, namely exercise question be " Emotion ", track part pattern (trmd) be " e6 " and track part be of a size of first track part of " 0011.05.02 " and exercise question be " Dream ", track part pattern (trmd) is the second track part that " e6 " and track part are of a size of " 0022.1f.0a ".
Be stored in server 12 by Figure 14 A to be recorded in mark the second content (there are the ATRAC data of exercise question for " Dream ") and the 3rd content (there are the ATRAC data of exercise question for " Morning ") pointed out, as shown in Figure 15 A to 15E, 16A to 16E, 17A to 17E and 18A to 18E, perform process.
Figure 15 A to 15E shows the sequential chart relevant to the order data between audio transmission unit 10 and record cell 20 when transmitting ATRAC data.
First, record cell 20 sends setting command (SETUP) to record cell 20 in step S31.On the basis receiving described setting command (SETUP), record cell 20 sets a record to be caused state and provides an answer signal (ACKNOWLEDGE) to audio transmission unit 10 in step S32.On the basis receiving answer signal (ACKNOWLEDGE), audio transmission unit 10 provides reset command (ACK-RESET) with reset answer signal (ACKNOWLEDGE) to record cell 20.
Audio transmission unit 10 provides initiation command (START) at time t33 to record cell 20.Thering is provided corresponding to the above-mentioned process in step S15 of this initiation command (START).On the basis receiving initiation command (START), while record cell 20 provides answer signal (ACKNOWLEDGE) and request signal (Data Req) to audio transmission unit 10, it starts record operation.
On the basis of request signal (Data Req), audio transmission unit 10 starts to provide the ATRAC data of giving the capacity of putting to record cell 20 at time t34, i.e. the second content (having the ATRAC data that exercise question is " Hello ") and the 3rd content (having exercise question for " the ATRAC data of morning ").In order to provide the ATRAC data of predetermined volumes at every turn, provide ATRAC data to record cell 20 continuously on the basis of the request signal (Data Req) that audio transmission unit 10 is provided by record cell 20 at time point t35, t36, t37 and t38 place.
Audio transmission unit 10 provides recording status to confirm, and whether order (ALRIGHT) is normal with the recording status of inspection record unit 20 at predetermined interval.Order (ALRIGHT) is to judge whether the recording status of record cell 20 normally corresponds to the above-mentioned process in step S16 to provide this recording status to confirm.
When audio transmission unit 10 judges that all ATRAC data have all been transferred to record cell 20, at time t39, it transmits and ceases and desist order (STOP) to record cell 20.(STOP) process corresponding to step S18 of ceasing and desisting order is provided.If ceased and desisted order, (STOP) is provided and is recorded on CD D with the ATRAC data that are provided integrally, and record cell 20 ends process at applying t40, provides cease and desist order (STOP) to audio transmission unit 10 simultaneously.
Figure 16 A to 16E shows the sequential chart of the TOC0 message command (TOC0info) sending record cell 20 at above-mentioned steps S20 from audio transmission unit 10 to.Figure 16 A and 16B shows the recording status sending the sequential chart of the data of record cell 20 and the U-TOC0 at each time point CD D from audio transmission unit 10 to.
Suppose that the music number of new recording is given and be first registered in U-TOC also as the 3rd track part near the first and second track parts formerly recorded.
At time point t51, when not providing TOC0 message command (TOC0info), in the U-TOC0 of CD D, record start address, end address, the track part pattern at first and second track parts (there is the track part that exercise question is " Emotion " and " Dream ") of front record and the start address at the 3rd track part of front record and end address.
Audio transmission unit 10 provides track part pattern and the track part size of first content at time point t52.That is, audio transmission unit 10 provides TOC0 message command (TOC-info) together, has the track part size of the content number of ATRAC data, the track part pattern of described content and this content that exercise question is " hello ".
In the reception track part pattern of first content and the basis of track part size, record cell 20 produces U-TOC0 information produced information to be recorded on CD D on the basis of provided information.Therefore, at time t53 place, the track part pattern relevant to first content and start address and end address are all recorded on CD D.
Then, audio transmission unit 10 transmits track part pattern and the track part size of the second content at time t53.That is, audio transmission unit 10 transmits TOC0 message command (TOC0info) together, has the content of ATRAC data and the track part pattern of described content and track part size that exercise question is " Morning ".
When receiving track part pattern and track part size, on the basis of provided information, record cell 20 produces U-TOC0 information produced information to be recorded on CD D.Therefore, at time t54 place, the track part pattern relevant to the second content and start address and end address are recorded in the U-TOC0 of CD D.
Audio transmission unit 10 transmits at time t55 and ceases and desist order (STOP).When (STOP) is ceased and desisted order in reception, record cell 20 judges stopped in the corresponding process of the TOC0 message command (TOC0info) of prerequisite confession and on the basis supposing not corresponding with the second content end address, downstream data, proceeded to the process of Delete superfluous item.
Like this, at time t56, record in the U-TOC0 of CD D with the first and second track parts at the U-TOC0 data continuous print exercise question of the front record track part that to be the track part of " Hello " and exercise question be " Morning ".
Figure 17 A to 17D and Figure 18 A to 18D show and are supplied to the relevant time curve of the topic information of record cell 20 at above-mentioned steps S20 place from audio transmission unit 10.Meanwhile, Figure 17 A and 18A shows and is supplied to the time curve of the data of record cell 20 and Figure 17 B and 18B from audio transmission unit 10 and shows 4 states at each time point U-TOC1 and CD D.
Referring to Figure 17 D, when not providing exercise question order (Title), at time point t61, in U-TOC1 and U-TOC4 of CD D, only record the exercise question of the first and second track parts at front record.
Audio transmission unit 10 provides the exercise question of first content at time t62.That is, audio transmission unit 10 transmit provide the content number of alphabetical ATRAC data number and content titles to be alphabet data and the exercise question order (Title) of " Hello ".
When receiving first content, record cell produces U-TOC1 and U-TOC4 information on the basis of provided information, produced information to be recorded on CD D.
Meanwhile, if the alphabetical number of exercise question is greater than setting, perform process with form by stages.That is, if be merely able to be provided for 4 alphabetical data, so first transmit 4 letters " Hell " at time t64 and then transmit letter " O ".
Therefore, at time t65, the exercise question corresponding to first content is recorded in U-TOC1 and U-TOC4 of CD D.
The time t66 of audio transmission unit 10 then shown in Figure 18 D provides the exercise question of the second content.That is, audio transmission unit 10 provide together exercise question order " Title ", ATRAC data content number, the alphabetical number of exercise question and the alphabetical number of described content titles " Morning " are provided.When reception the second content, on the basis of provided information, record cell 20 produces U-TOC1 and U-TOC4 information, and produced information is recorded on CD D.
Therefore, at time t65, the U-TOC1 of CD D records the exercise question corresponding with the second content.
When record cell 20 terminates the process of all exercise questions, audio transmission unit 10 transmits at time t68 and ceases and desist order (STOP) to end process.
Utilize above-mentioned process, audio sound-recording system 1 can in D light disc recording TOC information.That is, the exercise question recorded together with the second track part that CD D can be first track part of " Emotion " with the exercise question at front record with exercise question be " Dream " from server 12 to be the 3rd track part of " Hello " and exercise question be " Morning " the 4th track part and ATRAC data.
As mentioned above, utilize audio sound-recording system 1, the track part size of each track part transmits by audio transmission unit 10 together with ATRAC data, and record cell 20 divides the data stream be recorded on CD D, the start address of each track part and end address to be recorded on CD D.This allows audio sound-recording system 1 to be effectively recorded on CD D by user-selected track part.Record cell 20 is by while dividing the data stream of this track part and being recorded on CD D by the start and end address of each track part, and the track part of record ATRAC data responsively institute's transmitting data stream, to improve the utilization factor of CD D.
Referring to accompanying drawing, explained later audio sound-recording system according to a second embodiment of the present invention, the audio sound-recording system of this second embodiment improves on the basis of first embodiment of the invention audio sound-recording system 1 and obtains.In the process of the audio sound-recording system of description second embodiment, the part identical with above-mentioned audio sound-recording system 1 or composition represent with identical label and repeat no more for simplicity.
The block diagram of Figure 20 shows audio sound-recording system 40.
Audio sound-recording system 40 comprises audio transmission unit 10, reproducing unit 41, interface 44 for communicating, and this interface 44 is for the reproducing unit for information about 46 linking such as Internet, disk drive unit 45 and be made up of printing equipment 47, display 48 and loudspeaker 49.
Similar with aforementioned audio recording system 1, present video recording system 40 is also previously stored with voice data in the server 12 of audio transmission unit 10, with the voice data selected from the voice data be stored in server 12 desired by user, for record on the recording medium.
In addition, audio sound-recording system 40, also while reappear the relevant data of the voice data for recording from reproducing unit 46 for information about, reappears voice data for recording to export playing data for broadcasting in loudspeaker or earphone from reproducing unit 41.
The ATRAC data that code translator 42 is expanded to be provided by primary controller 11 are supplied to the voice data of playback process circuit 43 from code translator 42 with generation.
Signal after digital signal is converted to simulating signal and amplifies conversion by playback process circuit 43 is to produce simulated audio signal.The simulated audio signal produced by playback process circuit 43 is provided to loudspeaker or earphone.
Communication interface 44 is a modulator-demodular unit or the terminal for ISDN (integrated services network).Primary controller 11 can obtain graphical information, voice messaging or text message through this communication interface from WWW (World-WideWeb) node of Internet (Yin Te) net
Optical disc apparatus 45 be one for reappearing the device of CD being referred to as CD-Video, CD-ROM or DVD.Primary controller 11 can utilize this optical disc apparatus 45 to obtain the graphical information, voice messaging or the text message that are recorded on such as CD-ROM.
The printing equipment 47 of relevant information reproducing unit 46 prints the graphical information or text message that are provided by primary controller 11.
The display 48 of relevant information reproducer 46 shows the voice messaging or text message that are provided by primary controller 11.Display 48 can share with the display 14 of audio transmission unit 10.
The loudspeaker 49 of relevant information reproducer 46 exports the voice messaging provided by primary controller 11.Loudspeaker 49 can share with the loudspeaker or earphone for exporting the sound signal exported by reproducing unit 41.
In server 12, store multiple track part as mentioned above.Also storing a table in addition, being supplied to record cell 20 with reproducing unit 41 to export the part ATRAC data played sound during the record relevant to each track part for illustrating.
The artistical photo performing track part and the image graphics relevant to each track part is also stored in server 12.Also store the trace word and text data that represent described artist's personal record in addition.If find described artistical photo or moving picture on CD-Video or in family's paging of Internet, so, in server 12, also store chapter number or family's address of paging of CD-Video.
In order to record the track part selected by user on CD D, primary controller 11 reads ATRAC data and sends read-out data to record cell 20 from server 12.Now used transfer approach is similar to the method shown in audio sound-recording system previously explained.
Primary controller 11 also sends the predetermined portions data of described track part to record cell 20 and reproducing unit 41.This is the cause because described track part in during being recorded on track part at record cell 20 by ATRAC data must be able to be heard by the user.Because ATRAC data are compressed to original 1/5, so if attempt to reappear described track part during recording, so, all data all can not be reproduced.Therefore, the data after burst are sent the ATRAC data fragmentation that records of part to reproducing unit 41 by primary controller 11.
The data being supplied to reproducing unit 41ATRAC be such as music number be fragmented beginning, main points part or latter end.This is fragmented part and is pre-arranged in server 12.Can also the track part data irrelevant with the ATRAC data be recorded be sent to reproducing unit 41.In this case, the ATRAC data being supplied to reproducing unit 41 can be different to be recorded several to be recorded artistical music number.
The data transmission method of explained later between the audio transmission unit 10 and reproducing unit 41 of audio sound-recording system 40.
Figure 21 A to 21E shows the situation of the track part leader providing the ATRAC data transmitted from audio transmission unit 10 to record cell 20 to reproducing unit 41.
As in conjunction with audio sound-recording system 1 explain, audio transmission unit 10 provides the ATRAC data of predetermined volumes on the basis of the request signal (Data Req) from record cell 20 to record cell.Therefore, when being divided into the ATRAC data of 1 to 16 blocks to record cell 20 transmission, audio transmission unit transmission 10 is as the ATRAC data of Figure 21 A and 21B.
In addition, audio frequency delivery unit 10 transmits ATRAC data on the basis of the request signal (Data Req) from reproducing unit 41 in units of described predetermined volumes.Now, reproducing unit 41 decoding and reproduction ATRAC data, and after output audio signal, send next request signal (Data Req) to audio transmission unit 10.Thus, the interval of transmitting reproducing unit 41 request signal (Data Req) changes along with ratio of compression, like this, if ratio of compression is 1/5, so, request signal transmits interval approximate is 4 times that transmit record cell 20 request signal (Data Req) interval.
On the basis of the request signal (Data Req) of reproducing unit 41, audio transmission unit 10 provides the ATRAC data sending record cell 20 to continuously, such as, be the leader of the ATRAC data of the first to the four block, as shown in fig. 21 c.Can also will be stored in external memory area in the ATRAC data front sending reproducing unit 41 to and response sends stored data to reproducing unit 41 from the request signal (Data Req) of reproducing unit 41 in this time.
The control content of audio transmission unit 10 when the flow process of Figure 22 A and the 22B leader shown when a track part of the ATRAC data sending record cell 20 from audio transmission unit 10 to is being transmitted to reproducing unit 41.Specifically, Figure 22 A and 22B shows the content of the content of the ATRAC data transmission and processing of record cell 20 and the transmission process to the ATRAC data of reproducing unit 41.
When recording processing is activated, audio transmission unit 10 performs by the process in Figure 22 A pointed by step S31 to step S34.
In step S31, packed record ground WAn is set as at the track part being used for recording by audio transmission unit 10, and namely user selects the guide end address place of track part to be provided to a block address of the ATRAC data of record cell 20.After setting packed record address WAn, audio transmission unit 10 proceeds to step S32.
In step S32, audio transmission unit 10 judges whether the arbitrary request signal (Data Req) from record cell 20, and waits for until there is request signal (Data Req) at this step S32 place.If this request signal (Data Req) is issued, audio transmission unit 10 enters step S33.
In step S33 audio transmission unit 10, the block ATRAC data of packed record address WAn are transferred to record cell 20.Packed record address is added 1 and enters step S34 by audio transmission unit 10.
In step S34, audio transmission unit 10 judges whether packed record address WAn is greater than the end address for magnetic track record.That is, audio transmission unit 10 transmits all blocks to judge whether recording processing terminates to record cell 20.If audio transmission unit 10 finds that packed record address WAn is not more than the end address for magnetic track record, so audio transmission unit 10 repeats the process from step S32.If audio transmission unit 10 finds that packed record address WAn is greater than the end address for magnetic track record, so, recording processing terminates.This represent in this case for the data volume of magnetic track record be greater than on dish can recording capacity.
In order to reappear ATRAC data, audio transmission unit 10 performs the process of step S42 to S44 shown in Figure 22 B.
When recording processing is activated, compression is reappeared the block address that address RAn is set as ATRAC data, i.e. user-selected data by being transmitted to reproducing unit 41 in the guiding address being used for magnetic track record in step S41 by audio transmission unit 10.After setting compression reappears address RAn, audio transmission unit 10 enters step S42.
In step S42, audio transmission unit 10 judges whether record terminates.Namely audio transmission unit 10 judges whether terminate from the process of step S31 to S34.If find that record terminates, reappear process and terminate, otherwise audio transmission unit 10 enters step S43.
In step S43, audio transmission unit 10 judges whether the request signal (Data Req) from reproducing unit 41.If do not have described request signal (Data Req), audio transmission unit 10 turns back to step S42 and waits for until end of record (EOR) or send request signal (Data Req) in step S42 and S43.If there is request signal (Data Req), audio transmission unit 10 enters step S44.
In step S44, the block ATRAC data that compression reappears address RAn are transferred to reproducing unit 41 by audio transmission unit 10.Compression is reappeared address RAn and adds 1 and repeat the process from step S42 by audio transmission unit 10.
Thus, utilize above-mentioned audio sound-recording system 40, reproducing unit 41 is expanded and is reappeared and recorded for the compression ATRAC data that record during recording the ATRAC data of data during confirming to record at record cell 20 by record cell 20.
Figure 23 A and 23B shows the ATRAC data being supplied to reproducing unit 41 when record cell 20 records the ATRAC data of multiple track part on CD D from audio transmission unit 10.
Similar with audio sound-recording system 1, audio sound-recording system 40 provides the ATRAC data of multiple track part as memory block continuous data stream.Such as, when recording three track parts on CD D, audio transmission unit 10 provides track part 1 to 3 to record cell 20 continuously, as shown in fig. 23 a.In addition, audio transmission unit 10 provides the ATRAC data of track part 1 guide end during transmission track part 1 to reproducing unit 41.When then starting the transmission of track part 2, the ATRAC data in track part 2 guide end are provided to reproducing unit 41.When then starting the transmission of track part 3, the ATRAC data in track part 3 guide end are provided to reproducing unit 41, until the end of transmission (EOT) of track part 3.Should illustrate, the capacity for the ATRAC data provided from audio transmission unit 10 monitored in reproducing unit 41 is equivalent to the writing time being recorded track part.
Figure 24 A and 24B shows when recording the ATRAC of multiple track part from audio transmission unit 10 to CD D, the control content of audio transmission unit 10.Figure 24 A and 24B respectively illustrates the transmission process content of the transmission process content of the ATRAC time of record cell 20 and the ATRAC time to reproducing unit 41.
On the basis starting recording processing, audio transmission unit 10 performs the step of step S51 to S57 shown in Figure 24 A.
In step S51, audio transmission unit 10 is being set as by by the magnetic track record in the track part set at first number the track part number being supplied to record cell 20.On the basis of setting recording track part number, audio transmission unit enters step S52.
In step S52, audio transmission unit 10 arranges packed record address WAn in the guiding address of the track part for recording, i.e. user-selected track part.After arranging packed record address WAn, audio transmission unit 10 forwards step S53 to.
In step S53, audio transmission unit 10 judges whether request signal (Data Req) from record cell 20 and waits for until there is described request signal (Tata Req) in step S53.When request signal (Data Req) is issued, audio transmission unit 10 forwards step S54 to.
In step S54, audio transmission unit 10 says that the block ATRAC data of packed record address WAn are transferred to record cell 20.Audio transmission unit 10 makes packed record address add 1 and forward step S55 to.
In step S55, audio transmission unit 10 judges whether packed record address WAn is greater than the end address for the track part recorded.Namely audio transmission unit 10 judges whether all pieces of track part for recording all be transmitted and give record cell 20 thus recording processing is terminated.If find that packed record address WAn is not more than the end address for the track part recorded, audio transmission unit 10 repeats the step from step S53.If find that packed record address WAn is greater than the end address for the track part recorded, audio transmission unit 10 forwards step S56 to.
In step S56, magnetic track record number is added 1 and forwards step S57 to by audio transmission unit 10.
In step S57, audio transmission unit 10 judges whether described packed record address WAn is greater than terminal track part.That is, audio transmission unit 10 judges whether terminate for the recording processing of the track part recorded in its entirety.If judge that magnetic track record WTn is not more than terminal track part, audio transmission unit 10 repeats the process from step S51.If judge that track part recording mechanism WTn is greater than terminal track part, then, audio transmission unit 10 ends process.
On the other hand, in order to reappear ATRAC data, audio transmission unit 10 performs the process of step S61 to S66 shown in Figure 24 B.
When recording processing is activated, reproduction track part number is set as will being provided to the track part number of reproducing unit 41 in track part in the track part for recording, namely user-selected in step S61 by audio transmission unit 10.Arranging on the basis reappearing track part RTn, audio transmission unit 10 forwards step S62 to.
In step S62, audio transmission unit 10 for magnetic track record, namely step S61 arrange track part guiding address in arrange compression reappear address RAn.On the basis arranging compression reproduction address RAn, audio transmission unit 10 forwards step S62 to.
In step S62, audio transmission unit 10 judges whether the track part for recording changes.That is, whether the process of audio transmission unit 10 determining step S56 is corrected.If the result judged has changed, repeat the process from step S61, otherwise audio transmission unit 10 forwards step S64 to.
In step S64, audio transmission unit 10 judges whether record terminates.That is, whether the process of audio transmission unit 10 determining step S51 to step S57 terminates.If the result judged records to terminate, then reappear process and terminate.Otherwise audio transmission unit 10 forwards step S65 to.
In step S65, audio transmission unit 10 judges whether to have the request signal (data Req) from reproducing unit 41, if the result judged does not have described request signal (Data Req), then audio transmission unit 10 turns back to step S63.In step S63, S64 and S65, audio transmission unit 10 is waited for, respectively until track part changes, end of record (EOR) and send request signal (Data Req).If have issued request signal (Data Req), audio transmission unit 10 forwards step S66 to.
In step S66, the block ATRAC data that compression reappears address RAn are transferred to reproducing unit 41 by audio transmission unit 10.Compression is reappeared address RAn and adds 1 and repeat the process from step S63 by audio transmission unit 10.
Utilize audio transmission unit 10 as above, the compression ATRAC data recorded by record cell 20 are reproduced unit 41 and expand and reappear.If multiple track part is recorded, considered track part voice data can be confirmed.
In audio sound-recording system 40, because audio transmission unit 10 performs ATRAC data independently of one another to the transmission of record cell 20 and ATRAC data to the transmission of reproducing unit 41, so, if user wishes to reappear track part 2 during reproduction track part 1, so, track part 1 can be skipped in reconstruction processes on the basis starting input block 13.Specifically, start on the basis of input user, by processing in step S63 adjustment, audio sound-recording system 40 can skip predetermined track part.
Therefore, when recording ATRAC data on the CD D of audio sound-recording system 40, can desired by reappearing user for the one or more track parts in multiple track parts of recording.
It is if be transferred to reproducing unit 41 that Figure 25 A and 25B shows the track part optional part sending the ATRAC data of record cell 20 to from audio transmission unit 10.
If use audio sound-recording system 40 provide the content provider of content pre-set during recording will be monitored the multiple parts being used for CD D, so, user just fully can understand the content of described music number easily.Such as, if leader, the main points of music number or mix together part and latter end can be well understood, so, user just can understand the content of this music number easily.For these three parts, such as, address is set for being provided to the ATRAC data of record cell 20, as shown in fig. 25 a.If if the ATRAC data of presumptive address part provide a reproducing unit 41 and reproducing unit 41 to reappear provided ATRAC data by audio transmission unit 10 as shown in Figure 25 B, this is just enough.
Server 12 will reappear in each track part and the address of the unit number relevant to wherein stored track part and these unit is stored in an address table.The primary controller 11 of audio transmission unit 10 provides ATRAC data with reference to this address table to reproducing unit 41.
Specifically, when on CD D during magnetic track record 1, audio transmission unit 10 first with reference to the address table shown in Figure 26 in reproducing unit 41 from representing that the address " 0000 " of music leading end part enters ATRAC data to address " 0030 ".Audio transmission unit 10 then enter represent main points parts from address " 0200 " to the ATRAC data of address " 0240 ", be finally supplied to reproducing unit 41 by what represent music latter end from address " 0370 " to the ATRAC data of address " 0400 ".The sound signal of multiple discrete domain in reproducing unit 41 output sound cornopean, as shown in Figure 25 B.
In Figure 27 A and 27B, record cell 20 records the ATRAC data of multiple track part on CD D, specifically, is the ATRAC data being transferred to record cell 20 from audio transmission unit 10.The optional part of a track part is transferred to reproducing unit 41 by from audio transmission unit 10.
In this case, audio transmission unit 10 obtains the address arranged on relevant track part with reference to the address table shown in figure 23A.The ATRAC data of institute's address acquisition part are supplied to reproducing unit 41 by audio transmission unit 10, as shown in fig. 27 a.Then reproducing unit 41 reappears the ATRAC data provided, as shown in figure 27b.
The flow process of Figure 28 for illustrate the ATRAC data of multiple track part to be recorded to from audio transmission unit 10 on CD D in record cell 20 situation and particularly provide the track part optional part of ATRAC data to be provided to reproducing unit 41 situation under the control content of described audio transmission unit 10.The content being transferred to the transmission process of record cell 20 from audio transmission unit 10 is identical with the process of step S51 to S57 shown in Figure 24 A.
When reappearing the reproduction process being used for ATRAC data, audio transmission unit 10 performs the process of S71 to the S82 of step shown in Figure 28.
In step S71, audio transmission unit 10 is arranged in the track part for recording plays track part number, i.e. the track part of user's selection.Arranging on the basis reappearing track part RTn, audio transmission unit 10 forwards step S72 to.
In step S72, the primary controller 11 of audio transmission unit 10 obtains an address table from the server 12 for being stored into by described table such as external memory area.Then the unit number of the unit being used for reappearing was set to 1 by audio transmission unit 10 before forwarding step S73 to.
In step S73, audio transmission unit 10 sets compression and reappears address RAn in the leading end address of reproducing unit 41.Reappear on the basis of address Ran in setting compression, audio transmission unit 10 forwards step S74 to.
In step S74, judge whether the track part for recording changes, and namely whether the process at step S56 place is modified shown in Figure 24 A.If the conclusion judged is that track part changes, then repeat the process from step S71.Otherwise audio transmission unit 10 enters step S75.
In step S75, judge whether record completes, and namely whether the process of the step S51 shown in Figure 24 A to step S57 terminates.If the result judged records to terminate, then reappear process and terminate.Otherwise audio transmission unit 10 enters step S76.
In step S76, audio transmission unit 10 checks whether the request signal (Data Req) existed from reproducing unit 41.If there is no request signal (Data Req), audio transmission unit 10 turns back to step S74 and remains static until track part changes, reappears and terminate or send request signal (Data Req) in step S74, S75 and S76.If have issued request signal (Data Req), audio transmission unit 10 enters step S77.
In step S77, the block ATRAC data that compression reappears address RAn are transferred to reproducing unit 41 by audio transmission unit 10.Compression is reappeared address RAn and adds 1 and forward step S78 to by audio transmission unit 10.
In step S78, audio transmission unit 10 judges that compression reappears address RAn and whether is greater than unit end address.That is, judge whether the reproduction process being used for just being reproduced unit terminates.If find that compression reappears address RAn and is not more than large end address, repeat the process from step S73.Otherwise audio transmission unit 10 enters step S81.
In step S79, unit number Mn is added 1 by audio transmission unit 10, then forwards step S80 to.
In step S81, judge whether record terminates.If the result judged records to terminate, reappear process and terminate.Otherwise audio transmission unit 10 forwards step S82 to.
In step S82, judge whether described magnetic track record changes.If the result judged is that described track part changes, audio transmission unit 10 repeats the process from step S71, otherwise, repeat the process of step S81.
Utilize audio sound-recording system 40 as above, the part ATRAC data recorded by record cell 20 can be selected and reappear to allow to monitor the voice data be recorded during recording.
Utilizing audio sound-recording system 40, by specifying other one or more track part on address table, other one or more track part can be reappeared.Such as, the artistical music number be recorded can be reappeared.The part of reappearing desired by this user is selected to allow user by the content showing address table on display 14, can ATRAC data desired by reappearing user.
Below, use audio sound-recording system 40, except or replace utilizing reproducing unit 41 to reappear on CD D except ATRAC data, using relevant information reproducing unit 46 still image, motion video or text data can be reappeared be the related data for being recorded in ATRAC data on CD D.
Particularly, server 12 keeps performing the artistical photo of described track part with the image graphics of track part as the bit map data relevant with each stored track part on a memory.Server 12 is also kept for the text data specifying described track part word and artist's personal record on a memory.If artistical photo or moving picture are less than on family's page of CD-Video or Internet, server 12 keeps section number or family's page address of CD-Video on a memory.
In order to the track part on CD D selected by reappearing user, the primary controller 11 of audio transmission unit 10 reads ATRAC data and read-out data is supplied to record cell 20 from server 12.Now primary controller 11 is provided in information that relevant track part table specifies to relevant information reproducing unit 46 with reference to the table for relevant information shown in Figure 29.
If do not have bit map data, the primary controller 11 of audio transmission unit 10 obtains file from server 12 and obtained data is supplied to the display 48 of printing equipment 47 or relevant information reproducing unit 46.If provide described bit map data, the printing equipment 47 of relevant information reproducing unit 46 responds being enabled in of user and page gets this bit map data and print data is supplied to user.If provide bit map data, the startup that the display 48 of relevant information reproducing unit 46 responds user shows described bit map data.
If there is text data, the primary controller 11 of audio transmission unit 10 obtains described file from server 12 and this file is transferred to the display 48 of printing equipment 47 or relevant information reproducing unit 46.If provide described bit map data, relevant information reproducing unit 46 responds being enabled on page of user and gets described bit map data to provide print data to user.If provide text data, the startup that the display 48 of relevant information reproducing unit 46 responds user shows described text data.
If there is section number for specifying CD-Video or DVD play position, the primary controller 11 of audio transmission unit 10 obtains the video data of section number from optical disc apparatus 45 and these data is supplied to display 48 and the loudspeaker 49 of relevant information reproducing unit 46.If the pictorial data of providing, the startup that the printing equipment 47 of relevant information reproducing unit 46 responds user shows described motion video.
If existence is the uniform resource divider (URL) of www server address, the primary controller 11 of audio transmission unit 10 is from keeping page through communication interface 44 address acquisition information and sending obtained information to relevant information reproducing unit 46.When providing www server information, the startup that the display 48 of relevant information reproducing unit 46 responds user shows described motion video.
Utilize audio sound-recording system 40 as above, when can obtain other recording medium during record ATRAC data on CD D, the voice data or text data that are stored in server 12 or the information of netting from Internrt can be obtained through CD-ROM, CD-Video or transmission medium.Therefore, utilize audio sound-recording system 40, in music number, the artistical photo of signature or message can be reappeared on display 48 during record ATRAC data on CD D.In addition, the word of described music number and described artistical archives can be provided by printing equipment 47.Owing to providing the optical disc apparatus of the CD for such as CD-Video or DVD, so, described artistical publicity image can be shown or described artistical information can obtain to be supplied to user through transmission medium and communication network.
Utilize this structure, have and the network with relatively low speed can be utilized to be connected to primary controller 11 from server 12 compared with the audio compressed data of small data quantity, as shown in figure 20, meanwhile, the relevant information being greater than audio compressed data amount such as performing artistical image or message can be provided from CD can provide data or information when not considering transfer rate.
In Fig. 1 and 20, server 12 is represented as and is provided in audio transmission unit 10 inside.But, also can provide server 12 being placed in information center far and through ISDN or analog telephone network by this server interconnect to audio transmission unit 10 with make record cell 20 and the block corresponding with the audio transmission unit 10 comprising server 12 shown in Fig. 1 unified.
In fig. 20, the such as visual artist information provided through communication interface 44 can also be provided by remote server 12.
Although be described previously recording audio data on magnetooptical disc, the present invention can also be applied to the video data of record except voice data.If recording medium can be accessed randomly, recording medium also can be other medium except magneto-optic disk.

Claims (6)

1. an audio recording device, for recording the compressed audio program from server, comprising:
Recording medium, for storing multiple compressed audio program;
Selection unit, for select to be stored in described server compressed audio program in desired by compressed audio program at least one of them;
Reproducing unit, for reappearing the compressed audio program be stored in described server;
Controller, for controlling the compressed audio program of described selection is stored on described recording medium,
Wherein, when the compressed audio program of described selection is recorded on described recording medium, reappeared the compressed audio program be recorded on described server by described reproducing unit,
The compressed audio program of wherein said reproduction corresponds to one of them of the compressed audio program of described selection.
2. audio recording device according to claim 1, the compressed audio program of wherein said reproduction is the compressed audio program selected by user.
3. audio recording device according to claim 1, wherein also comprises:
For the communication interface of being undertaken communicating by network, the compressed audio program of described selection is transmitted by described communication interface.
4. an audio recording method, for the compressed audio program from server is recorded to recording medium, comprises the following steps:
Select the desired compressed audio program in the compressed audio program of described server of being stored at least one of them;
Reappear the compressed audio program be stored in described server;
The transmission of selected compressed audio program and selected compressed audio program being recorded on described recording medium is controlled;
Wherein, when the compressed audio program of described selection is recorded on described recording medium, reappear the compressed audio program be recorded on described server,
The compressed audio program of wherein said reproduction corresponds to one of them of the compressed audio program of described selection.
5. audio recording method according to claim 4, the compressed audio program of wherein said reproduction is the compressed audio program selected by user.
6. audio recording method according to claim 4, wherein carries out the communication interface communicated through network, transmit the compressed audio program of described selection.
CN200510118867.8A 1997-05-29 1998-05-29 Method and device for recording compression audio frequency data on recording medium and method for transmitting compression audio frequency data Expired - Lifetime CN101055745B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP14059697 1997-05-29
JP140596/97 1997-05-29
JP222724/97 1997-08-19
JP9222724A JPH1145556A (en) 1997-05-29 1997-08-19 Device and method for recording audio data
CNB981154034A CN100361227C (en) 1997-05-29 1998-05-29 Method for simultaneously recording and monitoring the recorder of data from servo device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CNB981154034A Division CN100361227C (en) 1997-05-29 1998-05-29 Method for simultaneously recording and monitoring the recorder of data from servo device

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CN101055745B true CN101055745B (en) 2015-07-22

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CN200510118867.8A Expired - Lifetime CN101055745B (en) 1997-05-29 1998-05-29 Method and device for recording compression audio frequency data on recording medium and method for transmitting compression audio frequency data

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US5331617A (en) * 1992-05-29 1994-07-19 Sanyo Electric Co., Ltd. Audio data recording/reproduction device having digital high speed dubbing function and audio data dubbing system using such devices
US5485447A (en) * 1993-07-22 1996-01-16 Sharp Kabushiki Kaisha High-speed data dubbing method
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Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN1050457A (en) * 1989-09-21 1991-04-03 菲利浦光灯制造公司 Record carrier and acquisition methods thereof, device and make pen recorder repeatedly
US5331617A (en) * 1992-05-29 1994-07-19 Sanyo Electric Co., Ltd. Audio data recording/reproduction device having digital high speed dubbing function and audio data dubbing system using such devices
US5485447A (en) * 1993-07-22 1996-01-16 Sharp Kabushiki Kaisha High-speed data dubbing method
CN1118198A (en) * 1993-12-24 1996-03-06 索尼公司 Information data recording and reproducing device and information data processing system

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