WO2002049007A1

WO2002049007A1 - Digital recording device, and digital reproducing device

Info

Publication number: WO2002049007A1
Application number: PCT/JP2001/010923
Authority: WO
Inventors: Takashi Namioka; Nobuyuki Kobayashi; Ken Fujii; Yasufumi Takasugi
Original assignee: Tdk Corporation
Priority date: 2000-12-14
Filing date: 2001-12-12
Publication date: 2002-06-20
Also published as: JP2002182694A

Abstract

A digital recording device (1) is capable of recording record data (Ds), and comprises a medium-exchange-stop switch (8a) for stopping the recording of the record data (Ds) in a recording medium (M) when exchanging the recording medium (M) while recording the record data (Ds), and a record control unit (10) which records succeeding data presence information (CA) related to the record data (DS) being recorded and representing that succeeding record data (Ds) continuous with the record data (Ds) being recorded and to be recorded successively in another recording medium (M) is present in the loaded recording medium (M) in a related manner to the record data (Ds) being recorded when the switch (8a) is operated, successively records the succeeding record data (Ds) in the exchanged recording medium (M), and records preceding data presence information related to the recorded record data (DS) and representing that preceding record data (Ds) continuous with the recorded record data (Ds) is present in the exchanged recording medium (M) in the exchanged recording medium (M).

Description

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Digital recording device and digital playback device

The present invention relates to a digital recording device configured to enable recording of recording data on a removable recording medium, and a digital recording device configured to enable reproduction of recording data recorded by the digital recording device. It relates to a playback device. Background art

As this type of digital recording apparatus and digital reproducing apparatus, there is an audio recording / reproducing apparatus using a card-type removable memory (hereinafter referred to as a “memory card”) as a recording medium. In this audio recording / reproducing apparatus, an analog audio signal input through a microphone is converted into digital data to generate audio data, and the audio data is recorded on a memory card in a mounted state. In this case, if the operator determines that the remaining recordable capacity of the memory card is insufficient while recording audio data to the installed memory card, the operator operates the stop button to stop recording, and then performs another operation. Replace the memory with the new one and operate the record button. As a result, audio data is continuously recorded on the replaced memory card. In this case, for example, when audio data is recorded across two memory cards, write “1st” on the label paper of the first memory card on which the audio data was recorded, and write the label on the second memory card. Write “2nd sheet” on paper.

On the other hand, when playing back audio data recorded across two memory cards, first, insert the memory card with “First sheet” written on the label paper and operate the play button. In this case, the audio recording / reproducing device reads the audio data from the first memory card, converts the audio data into an analog signal, generates an analog audio signal, and emits the audio signal from the speaker or the earphone. Next, the first memory car After the playback of the audio data recorded on the memory card is completed, replace the memory card with “2nd card” and operate the play button again. As a result, the audio recording and reproducing apparatus reproduces audio based on the audio data recorded on the second memory card. Disclosure of the invention

The inventor has found the following problems as a result of studying the above-described conventional technology. In other words, when using this audio recording / reproducing device to reproduce audio data recorded over, for example, two memory cards, first, a memory card marked “1st” is attached and played. After that, it is replaced with a memory card marked "2nd" and played. However, this type of memory card is configured so that various recording data such as audio data can be overwritten multiple times. On the other hand, every time recording data is recorded, it is troublesome to rewrite the characters written on the label paper, or to peel off the label paper and attach a new label paper. For this reason, it is sometimes attempted to write “1st sheet” or “2nd sheet” on the label paper and forget to enter it. In such a case, recording and playback of audio data using a conventional audio recording / reproducing apparatus requires the separate and independent recording of audio data on a plurality of memory cards. The sound of the venue such as for a long time! : There is a problem that it is difficult to determine whether the audio data recorded continuously is recorded over a plurality of memory cards. In particular, when multiple memory cards with audio data recorded continuously are mixed with many other memory cards, the audio data recorded on many memory cards must be played back one by one. Searching for multiple memory cards on which voice data is recorded is an extremely complicated task.

Also, when playing back audio data recorded over a plurality of memory cards, for example, when the audio data recorded on one memory card is recorded as if it were completed, the reproduction is continued. Of the second and subsequent memory cards Sometimes they neglect to play. In addition, when audio data recorded on the second and subsequent memory cards is reproduced for the first time by mistake, if the audio data is recorded as if it were the sound at the start of recording, recording starts. In some cases, playback may skip the recorded content at that point in time. As described above, the recording / reproducing method using the conventional audio recording / reproducing apparatus has a problem that it is difficult to reliably reproduce audio data recorded over a plurality of memory cards in a correct order. is there.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has been made in view of the above circumstances, and has been made in consideration of a digital recording method for recording recorded data distributed over a plurality of recording media in a method capable of reliably reproducing recorded data in a correct order. It is a main object of the present invention to provide an apparatus and a digital playback apparatus for playing back in a method capable of reliably playing back in a correct order.

A digital recording device according to the present invention is a digital recording device configured to be able to mount a removable recording medium and to be able to record recording data on a recording medium in a mounted state, When the recording medium in the mounted state is exchanged during recording of data, the recording medium stop switch for stopping recording of the recording data on the recording medium and the recording switch when the medium exchange stop switch is operated are recorded. The continuous data presence information indicating that there is a subsequent recording data which is continuous with the recording data currently recorded and is subsequently recorded on another recording medium is recorded on the recording medium in the mounted state in association with the recording data being recorded. Recording the subsequent recording data on the other recording medium exchanged with the recording data, and recording data continuing before the subsequent recording data. There has data available information before indicating that existing configured and a put related to printing data for continued recording control unit that records the other recording medium after the exchange. Note that, in the present invention, the “stop switch at the time of medium replacement” includes not only a hardware switch such as a switch element, but also is displayed on the display unit as long as it accepts a recording medium replacement instruction. Also includes software switches such as icons.

In this digital recording device, when the stop switch at the time of medium exchange is operated, The recording control unit records the data presence information following the mounted recording medium in association with the recording data being recorded, and after the mounted recording medium is exchanged, associates the subsequent recording data with the recording data and replaces the recording. By recording the previous data presence information on the medium, the playback device that plays back the recorded data is determined based on the continuous data presence information that there is the next recording data following the recording data being reproduced. In addition to this, it is possible to determine, based on the previous data presence information, that there is recording data following the recording data to be reproduced. Therefore, it is possible to reliably and easily reproduce recorded data continuously recorded over a plurality of recording media in a correct order in a reproducing apparatus.

The recording control unit may be configured to operate when the stop switch during medium exchange is operated, or when the remaining recordable capacity of the attached recording medium becomes less than or equal to a predetermined capacity during recording of the recording data. It is preferable to record the continuous data present information on the recording medium in the mounted state and to notify a message prompting the exchange of the recording medium. With this configuration, it is possible to prevent interruption of recording due to the shortage of the remaining recordable capacity, and when it becomes necessary to replace the recording medium, that is, the remaining recordable capacity is likely to be insufficient. At times, it is possible to automatically record the continuous data presence information.

Further, it is preferable that the recording control unit records the continuous data presence information as a part of the recording data being recorded, and records the previous data presence information as a part of the subsequent recording data. With this configuration, compared to the method of recording the continuous data presence information and the previous data presence information separately and separately from the recording data, the management of the file in the recording medium (for example, the FAT information In addition to simplifying writing and reading, it is possible to easily detect information with continuous data and information with previous data simply by reading recorded data during playback.

The recording control unit may further include association information for associating the recording data to be recorded on the recording medium in a distributed manner with the continuous data presence information and the previous data. It is preferable to record it as a part of the information with data. With such a configuration, for example, each record is compared with the method of recording the continuous data presence information and the previous data presence information of the content that the subsequent data exists or the previous data exists. It is possible to easily determine that the recorded content of the data is the recorded data belonging to one continuous group.

Further, it is preferable that the recording control unit records information having the same content as the association information on each of the recording media. With this configuration, the process of generating the association information becomes easier as compared with a case where the association information is individually generated. Further, the recording control unit generates recording data identification information capable of individually identifying each of the recording data to be recorded in a distributed manner, and records the recording data identification information corresponding to the subsequent recording data as the preceding recording data. And recording the recording data identification information corresponding to the preceding recording data as part of the association information for the subsequent recording data. preferable. With such a configuration, it is possible to make the reproducing apparatus immediately determine whether or not the recording data is to be reproduced at the time of reproducing the subsequent recording data.

Further, it is preferable that the recording control unit records information capable of specifying an order of the recording data to be distributed and recorded as a part of the recording data identification information. With such a configuration, for example, when the third recorded data of five consecutive recorded data is to be reproduced, if the user tries to reproduce the fourth recorded data by mistake, the reproducing device Thus, it is possible to reliably and easily determine that the reproduction order of the recorded data is different.

Further, the recording control unit generates recording medium identification information capable of individually identifying each of the recording media, and stores the recording medium identification information for the recording medium on which the subsequent recording data is recorded as one of the association information. As a unit, the recording medium is recorded on the recording medium in the mounted state, and the recording medium identification information of the recording medium in the mounted state is included in the association information. It is preferable to record as another part on another recording medium after the replacement. With this configuration, when the subsequent recording data is reproduced, the reproducing apparatus can immediately determine whether or not the recording medium is the recording medium on which the recording data to be originally reproduced is recorded.

Further, it is preferable that the recording control unit records, as a part of the recording medium identification information, information that can determine a reproduction order of each of the recording media on which each of the recording data is distributed and recorded. With this configuration, for example, when the recording data recorded on the third recording medium out of the recording data continuously recorded over five recording media is to be reproduced, the fourth recording is erroneously performed. When the medium is loaded, it is possible to make the reproducing apparatus surely and easily determine that the reproducing order of the recording medium is different.

A digital playback device according to the present invention is a digital playback device capable of playing back the recording data recorded on the recording medium by the digital recording device, wherein the recording data is distributed and recorded on a plurality of the recording media. At the time of starting a series of reproductions of the plurality of recording data, when the previous data presence information associated with the recording data of the attached recording medium is detected, the fact that the preceding recording data exists exists. Informing that the continuous recording data exists when the continuous data presence information associated with the recording data of the mounted recording medium is detected during the series of reproductions of the plurality of recording data. And when reproducing other recording data following the recording data in which the continuous data presence information is recorded, When the previous data presence information is not recorded in association with the recording data, the reproduction control unit is configured to notify that the recording data to be reproduced is true from the subsequent recording data.

In this digital playback device, when the playback control unit detects previous data presence information during playback of recorded data, the playback control unit notifies the presence of the preceding recorded data and detects the continued data presence information. When the next record data exists When the recorded data is reproduced following the recorded data that has been notified and the subsequent data present information is recorded, the recorded data to be reproduced when the previous data present information is not recorded in association with the recorded data By notifying that the recording data is different from the following recording data, it is possible to reliably reproduce the recording data recorded over a plurality of recording media in the correct order.

Another digital reproduction device according to the present invention is a digital reproduction device capable of reproducing the recording data recorded on the recording medium by the digital recording device, wherein the association information is recorded. When reproducing the other recorded data after reproducing the recorded data, the reciprocal association is performed based on the association information on the reproduced recording data and the association information on the other recorded data to be reproduced. It is provided with a reproduction control unit that makes a determination and performs a predetermined process set in advance according to the determination result.

In this digital playback device, when the playback control unit plays back the other recorded data after the playback of the recorded data in which the association information is recorded, the playback control unit associates the played back recorded data with the other recorded data to be played back. The mutual association is determined based on the association information about the data, and, for example, when it is determined that there is no association, as a predetermined process set in advance corresponding to the determination result, for example, a record to be reproduced By displaying a message indicating that the data is different from the data, it is possible to reliably reproduce the recorded data recorded over a plurality of recording media in the correct order. Another digital reproduction device according to the present invention is a digital reproduction device capable of reproducing the recording data recorded on the recording medium by the digital recording device, wherein the recording data identification information is recorded. When reproducing other recorded data after reproducing the recorded data that has been reproduced, based on the recorded data identification information for the reproduced recording data and the recorded data identification information for the other recorded data to be reproduced. It is provided with a reproduction control unit that determines mutual association and performs a predetermined process that is set in advance in accordance with the result of the determination. In this digital playback device, when the playback control section plays back other recorded data after the playback of the recorded data on which the recorded data identification information is recorded, the playback data includes the recorded data identification information and the playback data. The mutual association is determined based on the recording data identification information of other recording data to be performed. For example, when it is determined that there is no association, a predetermined process set in advance corresponding to the determination result is performed. For example, by displaying a message indicating that the recording data is different from the recording data to be reproduced, it is possible to surely reproduce the recording data recorded over a plurality of recording media in a correct order.

Another digital reproducing apparatus according to the present invention is a digital reproducing apparatus capable of reproducing the recording data recorded on the recording medium by the digital recording apparatus, wherein the recording medium identification information is recorded. When reproducing other recording data recorded on another recording medium after reproducing the recording data being reproduced, the recording medium identification information for the reproduced recording data and the other recording to be reproduced A reproduction control unit that determines mutual association based on the recording medium identification information recorded on the medium and performs a predetermined process set in advance in accordance with the determination result. .

In this digital playback device, the playback control unit performs playback of the recorded data that is recorded on another recording medium after reproducing the recorded data on which the recording medium identification information is recorded. Based on the recording medium identification information recorded on the other recording medium to be reproduced and the recording medium identification information recorded on the other recording medium. / To determine the mutual association, for example, when it is determined that there is no association, as a predetermined process set in advance corresponding to the determination result, for example, a record in which recording data to be reproduced is recorded. By displaying a message indicating that a recording medium different from the recording medium has been mounted, it is possible to reliably reproduce the recorded data recorded over a plurality of recording media in the correct order.

This disclosure is a Japanese patent application filed on February 14, 2000 All of these disclosures are expressly incorporated herein by reference, in the context of the subject matter included in Pl. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a block diagram showing a configuration of an audio recording / reproducing apparatus 1 according to an embodiment of the present invention.

FIG. 2 is an area map diagram showing an example of a recording area in the memory card M mounted on the audio recording / reproducing apparatus 1.

FIG. 3 is a configuration map diagram showing an example of the configuration of the audio data Ds (DS1 to DS3).

FIG. 4 is a configuration map diagram showing an example of the audio data DSI to DS3 recorded on the memory cards M1 to M3. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, an embodiment in which a digital recording device and a digital reproducing device according to the present invention are applied to an audio recording / reproducing device 1 will be described with reference to the accompanying drawings. First, the configuration of the audio recording / reproducing apparatus 1 will be described with reference to the drawings.

The audio recording / reproducing apparatus 1 shown in FIG. 1 is a portable voice recorder, which is configured so that a memory card M can be mounted as a recording medium, and is generated by digitally converting an analog audio signal Ss. The recording of the audio data Ds and the reproduction of the analog audio signal Ss generated by converting the audio data Ds recorded on the memory card M into an analog signal are executed. In this case, the memory card M corresponds to the recording medium in the present invention, and an existing card-type removable memory in which a semiconductor element is sealed with resin is used, and ID data (Identification data) D IDM and audio data D described later are used. Record s etc. As shown in FIG. 2, the recording area of the memory card M includes audio data Ds corresponding to recording data in the present invention and ID data DI described later. It comprises a data recording area Ma for recording a DM, and a FAT data recording area Mb for recording FAT data for audio data Ds and ID data DIDM recorded in the data recording area Ma. On the other hand, as shown in FIG. 1, the audio recording / reproducing apparatus 1 includes an audio signal input unit 2, an audio data generation unit 3, an ID generation unit 4, a memory interface unit 5, an audio signal generation unit 6, and an audio signal output unit. 7, operation unit 8, display unit 9, control unit 10, RAMI 1 and ROM 12.

The audio signal input unit 2 generates an analog audio signal Ss by amplifying an analog audio signal collected through a microphone (not shown) and then performing low-pass filtering. The audio data generation unit 3 converts the analog audio signal Ss into digital data and compresses the digital data to generate an audio data body DSD. The ID generation unit 4 includes, for example, 8 bits (256 types) of numerical information randomly generated under the control of the control unit 10 and audio data identification information including order information capable of specifying the generation order (playback order). Generate ID data DIDD for use. Further, the ID generation unit 4 generates ID data DIDM for identifying a memory card, which is composed of, for example, randomly generated 8-bit numerical information, and ID data DIDG as data association information. In this case, the ID data DIDD corresponds to the recording data identification information in the present invention. By using this ID data DIDD, each audio data D s (each audio data DS1 to DS3 described later) is individually identified by 8-bit numerical information, and the reproduction order is identified by the order information. . The ID data DIDM corresponds to the medium identification information in the present invention, and is provided for each memory card M. By using this ID data DIDM, each memory card M (memory cards M1 to M3 described later) is individually identified by 8-bit numerical information. Further, the ID data DIDG corresponds to the pertinent information in the present invention, and the audio data belonging to one audio data group recorded continuously is constituted by the same numerical value. This, ID data DIDG by using a single audio data group is recorded continuously, the audio data and single sound data other voice data group, the numerical information of the ₈ bi _t Therefore, they are distinguished.

The memory interface unit 5 includes a connector to which the memory card M can be attached, records audio data Ds and FAT data for the memory card M under the control of the control unit 10, and records audio data D from the memory card M. Reads s and FAT data. The audio signal generation unit 6 expands the audio data body DSD and decodes it into digital data, and converts the decoded digital data into an analog audio signal Ss. The audio signal output unit 7 amplifies the analog audio signal Ss after filtering it in a predetermined band, and emits the sound from a speaker. In the audio recording / reproducing apparatus 1, an earphone jack (not shown) is provided, and when an earphone is connected to the earphone jack, an analog audio signal is emitted from the earphone instead of the speaker.

The operation unit 8 is configured by arranging a plurality of operation buttons including a record button, a play button, a fast forward button, a rewind button, a stop button, a menu button, a power button, and a stop button 8a for memory replacement. ing. In this case, the memory exchange stop button 8a corresponds to the medium exchange stop switch in the present invention, and is operated when the memory card M is exchanged while the audio data Ds is being recorded on the memory card M. The display unit 9 is configured by an LCD panel, and displays the remaining recordable capacity of the memory card VI, the elapsed time from the start of recording / playback, the remaining capacity of the battery (not shown), and various messages to be described later. The control unit 10 corresponds to the recording control unit and the reproduction control unit in the present invention, and is configured by, for example, a 16-bit CPU. The control unit 10 controls the audio signal input unit 2, the audio data generation unit 3, the ID generation unit 4, the audio signal generation unit 6, and the audio signal output unit 7 in accordance with the button operation of the operation unit 8 and the memory. The recording control of the audio data Ds and the like to the memory card M via the interface unit 5 and the reading control of the audio data Ds and the like from the memory card M are executed. RAM il temporarily stores audio data D s, ID data D IDD, D ID M, D IDG, continuous data presence information CA, and calculation results of the control unit 10 that are being recorded on the memory card M. To remember. Further, the ROM 12 stores an operation program of the control unit 10, initial setting value data of the audio recording / reproducing device 1, and the like.

Next, a method of using the audio recording / reproducing apparatus 1 will be described with reference to each of the figures. First, an example of a recording method for dispersing and recording audio data Ds over three new memory cards (blank memory cards) M, M, and M will be described. The recording method will be described. Note that the three memory cards KM, M, and M are memory cards Ml to M3, respectively, and the audio data Ds, Ds, and Ds that are recorded on the memory cards Ml to M3 are recorded as audio data DS1 to DS3. It is explained as follows.

When the power switch is turned on, the audio recording / reproducing apparatus 1 determines whether or not the memory card M (in this case, the memory card Ml) is mounted on the memory interface unit 5 of the control unit 10. At this time, when it is determined that the memory card Ml is mounted, the ID generation unit 4 automatically generates the ID data DIDM, and the generated ID data DIDM is transferred to the data of the memory card Ml via the memory interface unit 5. Record in the recording area Ma. Next, force information such as the recordable capacity and the recordable remaining capacity of the memory card Ml is acquired from the memory card Ml and stored in the RAM 11. Next, the display unit 9 displays memory information such as the recordable time calculated based on the recordable remaining capacity included in the acquired card information. Next, when the recording button is operated, first, under the control of the control unit 10, the ID generation unit 4 generates ID data DIDD for individually identifying the audio data Ds (audio data DS1), and audio data Ds (audio data DS1). The control unit 10 generates ID data DIDG for associating the data DS1 to DS3, and stores the ID data DIDD and DIDG in the RAMI1. At this time, since the presence or absence of the generation of the audio data DS2 and DS3 has not been determined, when only the audio data DS1 is recorded in the subsequent recording process and the recording is stopped, both ID data DIDD and DIDG are stored in RAMI. Deleted from 1. Next, the control unit 10 outputs the audio data body D input through the audio signal input unit 2 and the audio data generation unit 3. Generate audio data DS1 based on SD. Specifically, the audio signal input unit 2 outputs an analog audio signal Ss generated by amplifying and filtering the analog audio signal input via the microphone, and the audio data generation unit 3 outputs After converting the analog audio signal S s to digital data, the data is compressed and output as audio data body D SD. Next, as shown in Fig. 3, the control unit 10 adds header data DSH of about 90 bytes, which includes the ID data DIDD read from the RAMI 1, the recording file name, and the recording date of the file, to the audio data body DSD. Then, the audio data DS1 is generated. Next, the control unit 10 temporarily stores the audio data DS1 in the RAMI1. Thereafter, the control unit 10 continuously generates the audio data DS1 until the memory exchange stop button 8a or the stop button is operated. During this time, the control unit 10 reads out the audio data DS1 from the RAMI 1 and sequentially records it in the data recording area Ma of the memory card Ml via the memory interface unit 5.

At this time, the control unit 10 constantly monitors the remaining recordable capacity of the data recording area Ma in the memory car KM1, and records the audio data DS1 corresponding to the sound whose remaining recordable capacity is, for example, about 3 minutes. When the available capacity is reduced below the first predetermined capacity, the message “Memory card is insufficient. Please prepare a new memory card” is displayed on the display unit 9. At the same time, the control unit 10 causes the ID generation unit 4 to generate ID data D IDM for the memory card M2 for recording the audio data DS2 subsequently to the memory card Ml and ID data DIDD for the audio data DS2. Next, the control unit 10 stores the ID data DIDM, DIDD, and DIDG in the RAM 11 as continuous data presence information CA. Next, when the remaining recordable capacity of the data recording area Ma reaches a second predetermined capacity capable of recording audio data DS1 corresponding to, for example, about one minute of audio, the control unit 10 Exchange the password, display the message on the display unit 9. As a result, it is possible to prevent interruption of recording due to lack of remaining recordable capacity. Also, the control unit 10 is shown in FIG. In this way, the continuous data presence information CA read from RAMI1 is recorded in the last area of the audio data DS1, and the subsequent data of the generated audio data DS1 is recorded in RAMi1.

Next, after the memory card Ml mounted on the memory interface unit 5 is replaced with the memory card M2, the control unit 10 determines whether the recordable remaining capacity of the memory card M2 is equal to or more than a predetermined capacity. If it is determined that the remaining recordable capacity is equal to or less than the predetermined capacity, a message that “recordable capacity is insufficient” is displayed on the display unit 9. If it is determined that the remaining recordable capacity of the memory card M2 is equal to or larger than the predetermined capacity, the ID data DIDM for the memory card Ml, the ID data DIDD for the audio data DS1, and the ID data DIDD for the audio data DS1 and DS2. The data DIDG is recorded as the previous data presence information CB in the head area of the audio data DS2 as shown in FIG. At the same time, the data following the audio data DS1 stored in RAMI 1 during the replacement of the memory card is recorded as audio data DS2 on the memory card M2, and the ID data DIDM for the memory card M2 is stored in the data recording area Ma. The ID data DIDD of the audio data DS2 is recorded as a part of the header information DSH of the audio data DS2. Thereafter, in the same manner as the recording of the audio data DS1 described above, the control unit 10 continuously executes the generation of the audio data DS2, and sequentially enters the data recording area Ma of the memory card M2 via the memory interface unit 5. Record.

In this case, when the operator determines that the remaining recordable capacity of the memory card M2 is insufficient during the recording of the audio data DS2, the operator replaces the memory card M2 with the memory card M3 regardless of the recordable remaining capacity of the memory card M2. Can be replaced. In this case, when the operation signal of the memory when replacing stop button 8 _a which is operated by the operator is input to the control unit 10, the control unit 10, and the ID data DIDM for the memory card M 3, for voice data DS3 ID data DIDD is automatically generated by the ί D generation unit 4 and read out from the ID data DIDM, DIDD and RAMI 1. The ID data D IDG and the subsequent data presence information CA are recorded in the last area of the audio data DS2 as shown in FIG. As a result, the continuous data presence information CA can be automatically recorded. At the same time, the control unit 10 causes the display unit 9 to display a message “Replace the new memory”. In addition, the control unit 10 causes the RAM I 1 to record subsequent data of the audio data DS2 generated thereafter. Next, when the memory card M2 mounted on the memory interface unit 5 is replaced with the memory card M3, the control unit 10 sets the ID data DIDM for the memory card M2 and the ID for the audio data DS2. As shown in FIG. 4, the data D IDD and the ID data D IDG read out from the RAM I 1 are recorded in the head area of the audio data DS3 as shown in FIG. At the same time, while the memory card is being replaced, the subsequent data of the audio data DS2 stored in the RAM I 1 is recorded on the memory card M3 as the audio data DS3, and the ID data D IDM for the memory card M3 is recorded in the data recording area. The ID data DIDD of the audio data DS3 is recorded as a part of the header information DSH of the audio data DS3. Thereafter, in the same manner as the recording of the audio data DS1 and DS2 described above, the generation of the audio data DS3 is continuously performed, and the memory card M3 is stored in the memory interface M5 through the memory interface unit 5 until the stop button is operated. Data is sequentially recorded in the data recording area Ma.

Through the above processing, the recording contents are continuously recorded on the memory cards M1 to M3 as the audio data DS1 to DS3 without interruption. The audio data DS1 includes ID data D IDD for the subsequently recorded audio data DS2, ID data D IDM for the memory card M2 on which the audio data DS2 is recorded, and audio data D S1 to D S. The ID data D ID G to which S3 is associated follows, and is recorded as data presence information CA. On the other hand, the audio data DS2 includes the ID data DIDD for the audio data DS1 following the audio data DS2, the ID data D IDM for the memory card Ml on which the audio data DS1 is recorded, and the audio data DS1. ID data D ID G to associate DS3 is recorded as previous data presence information CB and audio data ID data DIDD for the audio data DS3 recorded subsequent to the data DS2, ID data D IDM for the memory card M3 on which the audio data DS3 is recorded, and ID data D IDG for associating the audio data DS1 to DS3. Is recorded as information CA with data. The audio data DS3 includes ID data D IDD for the audio data DS2 following the audio data DS3, ID data D IDM for the memory card M2 on which the audio data DS2 is recorded, and audio data DS3. ID data D IDG that associates DS1 to DS3 is recorded as previous data presence information CB. In this case, the ID data DIDD, DIDD, and DIDD in each of the audio data DS1 to DS3 can specify that the audio data DS1 to DS3 are the first, second, and third recording data, respectively. Order information is included.

Next, a method of reproducing the audio data DS1 to DS3 recorded on the memory cards M1 to M3 will be described.

When playing back the audio data DS1 to DS3, first, the memory card Ml is inserted into the memory interface unit 5, and then the play button is operated. At this time, the control unit 10 determines whether or not the previous data presence information CB is recorded in the audio data Ds instructed to reproduce. At this time, for example, when the reproduction of the audio data DS2 is instructed due to the incorrect insertion of the memory card M2, the previous data presence information CB is recorded. In such a case, when it is determined that the previous data presence information CB is recorded, a message “This audio data is a continuation of other audio data” is displayed on the display unit 9. By checking the order information in the ID data D IDD recorded as the header information DSH of the audio data DS2, it can be determined that the audio data is not the audio data to be reproduced first. On the other hand, when it is determined that the previous data presence information CB is not recorded, for example, when the reproduction of the audio data DS1 is instructed, the audio data DS1 is read from the attached memory card Ml, and the audio data DS1 is read. The audio data body DSD obtained by removing the header information DSH from the data DS1 is transferred to the audio signal generator 6. Next, the audio signal generator 6 converts the audio data body DSD The digital data is generated by decompression, and the digital data is converted into an analog audio signal Ss. Subsequently, the audio signal output unit 7 filters the analog audio signal Ss, amplifies the filtered signal, and emits the sound from the speaker. As a result, the sound based on the sound data DS1 is reproduced. In this case, when the control unit 10 detects the data presence information CA in the audio data DS1 during audio reproduction, the control unit 10 says, "The following audio data exists. Prepare the next memory card." Is displayed on the display unit 9. After that, when the reproduction of the sound based on the sound data DS1 is completed, the control unit 10 displays a message "Replace the next memory card, please". At the same time, the continuous data presence information CA in the audio data DS1 is stored in RAMI1. Next, when the memory card Ml mounted on the memory interface unit 5 is replaced with another memory card M, the control unit 10 transmits the ID data DIDM recorded on the memory card M and the RAMI 1 Determines the identity with the ID data DIDM in the CA. In this case, if the operator mistakenly inserts a memory card M other than the memory card M2 (for example, the memory card M3) into the memory interface unit 5, the ID card DIDM is different, so that the memory card M is It can be determined that the memory card is not the memory card M2. Therefore, at this time, the control unit 10 causes the display unit 9 to display a message stating that “it is not a memory card on which continued audio data is recorded.” By checking the order information in the ID data DIDD in the audio data DS3 recorded on the memory card M3, it is determined that the memory card M2 does not contain audio data to be reproduced following the audio data DS1. You can also. On the other hand, when the succeeding memory card M2 is correctly mounted, the control unit 10 determines that the memory card M is the correct memory card M2 because both ID data DIDMs are the same, and continues the data presence information. Start playback of audio based on audio data D s (that is, audio data DS2) in which the same ID data DIDD as CADD ID data DIDD is recorded. In this case, the control unit 10 controls the audio data DS2 recorded on the memory card M2. When the reproduction of the audio data D s other than the audio data D s is instructed, the audio data D s is the data following the audio data DS 1 because the previous data presence information CB is not recorded in the audio data D s. It is determined that it is not. Also, even if the audio data D s is the audio data following the other audio data D s and the previous data presence information CB is recorded, the ID data D Since the IDG is different from the ID data D IDG in the continuous data presence information CA in the audio data DS1, it is determined that the audio data D s is not the continuation of the audio data DS1. By checking the order information in the ID data D IDD, it can be determined that the audio data D s for which the reproduction has been instructed has not been instructed to be reproduced in the correct reproduction order. The control unit 10 causes the display unit 9 to display a message stating that “The following audio data has not been reproduced.”

When the reproduction of the audio based on the audio data DS2 is completed, the control unit 10 proceeds to “change to the next memory card, Is displayed on the display unit 9. At the same time, the continuous data presence information CA in the audio data DS2 is stored in the RAM I1, and it is determined whether the memory card M mounted on the memory interface unit 5 is the memory card M3. Thereafter, in the same manner as when the reproduction of the sound based on the sound data DS2 is started, the sound data D s (that is, the sound data D s) in which the same ID data D IDD in the data-present information CA is recorded. Start playing audio based on data DS3). Thus, the sound is reproduced based on the sound data DS3 until the stop button is operated.

As described above, according to the audio recording / reproducing apparatus 1, when the audio data DS1 to DS3 are distributed and recorded across the memory cards M1 to M3, the continuous data presence information CA and the previous data presence information CB are used. By recording the audio data DS1 to DS3 as a part of the audio data DS1 and DS2, it is possible to display a message to the effect that the subsequent audio data exists on the display unit 9 when the audio data DS1 and DS2 are reproduced. . Also, a series of audio data During playback of DS1 to DS3, for example, if the memory card M2 is inserted by mistake, a message to the effect that the preceding audio data DS1 exists in the audio data DS2 in the memory card M2 is displayed on the display unit 9. It can also be displayed. Further, for example, when the audio data DS2 is reproduced after the reproduction of the audio data DS1, when a memory card other than the memory card M2] VI is attached to the memory interface unit 5, the subsequent memory card M A message indicating that the audio data DS2 is not recorded can be displayed on the display unit 9. Therefore, the audio data DS1 to DS3 recorded over the plurality of memory cards Ml to M3 can be correctly and correctly and continuously reproduced in order.

It should be noted that the present invention is not limited to the above-described embodiment of the invention, but can be appropriately modified. For example, in the embodiment of the present invention, ID data D IDD composed of randomly generated 8-bit numerical information and order information for specifying the generation order, and randomly generated 8-bit numerical information The example in which the ID data D IDM and D IDG are used as the continuous data presence information CA and the previous data presence information CB has been described. However, the continuous data presence information and the previous data presence information in the present invention are not limited thereto. ID data D IDM, DIDD, and D IDG consisting of arbitrary numerical information and other information generated within a range of 32 bits can be used. Also, without using all of the ID data D IDM, D IDD and D IDG, for example, only the ID data D IDM and D IDD are used, or only the ID data D IDG is used and the data presence information CA and Previous information with data CB can be used. Further, the same numerical information may be recorded through all audio data Ds as the continuous data presence information CA and the previous data presence information CB. Further, in the embodiment of the present invention, an example in which the continuous data presence information CA and the previous data presence information CB are recorded on the memory card M as a part of the audio data Ds has been described, but the present invention is not limited to this. The audio data D s, the continued data existence information CA and the previous data existence information CB are recorded as separate and independent data files, and information relating them is recorded as part of the audio data D s or It can be recorded as a separate and independent data file.

Further, in the embodiment of the present invention, the ID data D IDM composed of randomly generated 8-bit numerical information is taken as an example, but the recording medium identification information in the present invention is not limited to this, and is always On condition that the voice data Ds is recorded on the new memory card M, order information that can specify the order of use can be included in the ID data DIDM. According to this recording method, for example, when any of the memory cards M1 to M3 is inserted into the audio recording / reproducing apparatus 1 after the recording of the audio data DS1 to DS3 is completed, the memory card becomes the first memory. The card, the second memory card and the third memory card can be specified. Therefore, when the memory card Ml is to be inserted, when the memory card M3 is incorrectly inserted, it is possible to be informed. Further, each time a memory card M installed in the memory interface unit 5 is replaced with another memory card M, the ID data D IDM of the memory card M installed before replacement and the newly installed memory card M are replaced. It can also be configured to determine the identity of the card M with the ID data D IDM. According to this configuration, for example, when the memory card KM2 is to be inserted in place of the memory card Ml in the installed state, when the memory card Ml is mistakenly reinserted, an error indicating the fact is given. A message can be displayed.

Further, in the embodiment of the present invention, an example in which audio data Ds (audio data DS1 to DS3) is recorded has been described. However, the recording data in the present invention is not limited to audio data Ds, but may be video data or numerical values. It goes without saying that various digital data such as data and text data may be used. Furthermore, the audio data D s in the present invention is not limited to the audio data D s obtained by digitally converting the analog audio signal S s collected through a microphone, but may be based on an audio signal input via an audio signal input terminal, for example. This includes audio data and audio data obtained via a communication terminal. Further, the recording medium of the present invention is not limited to the memory card M, but may also be a stick-shaped or piece-shaped removable memory, MD, MO, FD, CD-R, CD-RW, DVD — Includes various types of removable media such as disk-type digital data recording media such as R, DVD and RW, and tape-shaped digital data recording media such as DV, DAT and DDS. Industrial applicability

As described above, according to the digital recording apparatus of the present invention, when the stop switch at the time of medium exchange is operated, the recording control unit associates the recording data being recorded with the recording medium in the mounted state, The recorded data is reproduced by recording the data present information and, after the mounted recording medium is replaced, recording the previous data present information on the replaced recording medium in association with the subsequent record data. It is possible to make the reproducing apparatus determine that there is recording data following the recording data being reproduced on the basis of the information on the presence of continuous data, and to determine whether or not the recording data to be reproduced on the basis of the information on the previous data. It can be determined that there is recording data following. As a result, a digital recording / reproducing apparatus capable of reliably and easily reproducing recorded data continuously recorded over a plurality of recording media in a correct order to a reproducing apparatus is realized.

Further, according to the digital playback device of the present invention, when the playback control unit detects the data presence information during the playback of the recorded data, the playback control unit notifies that the preceding recorded data exists, and When the continuous data presence information is detected, it is notified that the next record data exists, and when the record data is reproduced after the record data in which the continuous data presence information is recorded, the record data is recorded. When the information with the previous data is not recorded in association with the data, it can be notified that the recording data to be reproduced is different from the subsequent recording data. As a result, a digital reproducing apparatus that can surely reproduce recorded data recorded over a plurality of recording media in a correct order is realized.

Claims

The scope of the claims

1. A digital recording device configured to be able to mount a detachable recording medium and capable of recording recording data on a recording medium in a mounted state, wherein the recording state of the mounted state is maintained during recording of the recording data. A medium exchange stop switch for stopping the recording of the recording data on the recording medium when the recording medium is exchanged, and another recording continuous with the recording data being recorded when the medium exchange stop switch is operated. The subsequent data, which indicates that there is continued recording data to be subsequently recorded on the medium, is recorded on the recording medium in the mounted state in association with the recording data being recorded, and the other recording exchanged. The subsequent recording data is subsequently recorded on the medium, and the previous data presence information indicating that the recording data following the preceding recording data exists exists. Digital recording device in association with the recording data of the continued and a recording control section for recording to another recording medium body after the replacement.

2. The recording control unit is configured to operate when the stop switch at the time of medium exchange is operated, or when the remaining recordable capacity of the attached recording medium becomes less than or equal to a predetermined capacity during recording of the recording data. The digital recording device according to claim 1, wherein the information indicating that there is continued data is recorded on the recording medium in the mounted state, and a message urging replacement of the recording medium is notified.

3. The recording control unit records the continuous data presence information as a part of the recording data being recorded and records the previous data presence information as a part of the subsequent recording data. Digital recording device.

4. The recording control unit records the continuous data presence information as a part of the recording data being recorded and records the previous data presence information as a part of the subsequent recording data. Digital recording device.

5. The recording control unit records, as a part of the continued data presence information and the previous data presence information, association information for associating the recording data to be distributed and recorded on the recording media with each other. The digital recording device according to claim 1.

6. The recording control unit may associate, as a part of the continued data presence information and the preceding data presence information, association information for associating the recording data to be recorded in a distributed manner with the recording media. 3. The digital recording device according to claim 2, wherein the recording is performed.

7. The recording control unit associates the recording data, which is distributed and recorded on each of the recording media, with the recording data as a part of the subsequent data presence information and the previous data presence information. 4. The digital recording device according to claim 3, wherein the recording is performed.

8. The recording control unit may associate the association information for associating the recording data to be recorded in the recording medium in a distributed manner with the subsequent data presence information and a part of the previous data existence information. 5. The digital recording device according to claim 4, wherein the recording is performed as a recording.

9. The digital recording device according to claim 5, wherein the recording control unit records information having the same content as the association information in each of the recording media.

10. The recording control unit generates recording data identification information capable of individually identifying the recording data to be distributed and recorded, and continues the recording data identification information corresponding to the subsequent recording data. 6. The recording data as a part of the association information about the recording data, and the recording data identification information corresponding to the preceding recording data is recorded as a part of the association information about the following recording data. 9. The digital recording device according to any one of claims 1 to 8.

11. The digital recording apparatus according to claim 10, wherein the recording control unit records, as a part of the recording data identification information, information capable of specifying an order of the recording data to be distributed and recorded.

12. The recording control unit generates recording medium identification information capable of individually identifying each of the recording media, and converts the recording medium identification information of the recording medium for recording the subsequent recording data into the association information. 6. The recording medium in the mounted state as part of the recording medium, and the recording medium identification information of the recording medium in the mounted state is recorded as another part of the association information on the other recording medium after the replacement. 9. The digital recording device according to any one of 8.

13. The recording control unit records, as a part of the recording medium identification information, information that can determine a reproduction order of each of the recording media on which each of the recording data is distributed and recorded. Digital recording device.

14. A digital reproducing apparatus capable of reproducing the recorded data recorded on the recording medium by the digital recording apparatus according to any one of claims 1 to 4,

At the time of starting a series of reproductions of the plurality of pieces of recording data dispersedly recorded on the plurality of recording media, and detecting the previous data presence information associated with the recording data of the attached recording medium; When a notification that the preceding recording data exists exists, and when the continuous data presence information associated with the recording data of the mounted recording medium is detected during the series of reproductions of the plurality of recording data, When the other recorded data is reproduced subsequent to the recorded data in which the information on the presence of the continued data is recorded, the fact that the following recorded data is present is notified. When the previous data presence information is not recorded, the reproduction control unit that notifies that the recording data to be reproduced is different from the subsequent recording data is provided. Eteiru digital playback device.

15. A digital reproducing apparatus capable of reproducing the recorded data recorded on the recording medium by the digital recording apparatus according to any one of claims 5 to 8,

When reproducing other recording data after reproducing the recording data in which the association information is recorded, the association information for the reproduced recording data is associated with the association for the recording data to be reproduced. A digital playback device including a playback control unit that determines a mutual association based on information and performs a predetermined process that is set in advance according to a result of the determination.

16. A digital reproducing apparatus capable of reproducing the recorded data recorded on the recording medium by the digital recording apparatus according to claim 9, When reproducing other recording data after reproducing the recording data in which the association information is recorded, the association information for the reproduced recording data is associated with the association for the recording data to be reproduced. A digital playback device that includes a playback control unit that determines mutual association based on information and performs a predetermined process that is set in advance in accordance with the determination result.

17. A digital reproducing apparatus capable of reproducing the recording data recorded on the recording medium by the digital recording apparatus according to claim 10.

When reproducing other recording data after reproducing the recording data in which the recording data identification information is recorded, the recording data identification information for the reproduced recording data, and the recording data identification information for the other recording data to be reproduced. A digital playback device including a playback control unit that determines mutual association based on recording data identification information and performs a predetermined process set in advance in accordance with the determination result.

18. A digital reproducing apparatus capable of reproducing the recording data recorded on the recording medium by the digital recording apparatus according to claim 11,

19. A digital reproducing apparatus capable of reproducing the recorded data recorded on the recording medium by the digital recording apparatus according to claim 12.

When reproducing other recording data recorded on another recording medium after reproducing the recording data on which the recording medium identification information is recorded, the recording medium identification information on the reproduced recording data; A reproduction control unit that determines mutual association based on the recording medium identification information recorded on the other recording medium to be reproduced, and performs a predetermined process set in advance in accordance with the determination result. Digital type

20. A digital reproducing apparatus capable of reproducing the recorded data recorded on the recording medium by the digital recording apparatus according to claim 13,