JP2005100629A - Voice recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a voice recording and reproducing device in which any hindrance is not caused in preservation processing even if operation by a user is permitted at the time of parallel processing of preservation and reproduction of music data. <P>SOLUTION: This device is provided with a control part 100 in which when preservation processing in which music data from a recording medium 10 is preserved in a storage part 150, and reproduction processing in which the music data from the storage part 150 is read out and the read out music data is reproduced are performed in parallel, when a reproduction position is specified by a user through an operating part 120, when the specified reproduction position is in a already preserved region (region of a music map constituted of music data preserved in the storage part 150), preservation processing is continued as it is, on the other hand, reproduction processing from the specified reproduction position is also performed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to an audio recording / reproducing apparatus, and more particularly to an audio recording / reproducing apparatus capable of performing parallel processing for storing and reproducing music data.

In recent years, music data such as moving image data and audio data is generally handled as digital data. With the development of high-speed digital data transmission technology and digital data compression technology represented by the MPEG system, the size of music data is further reduced, and the transmission speed tends to be higher.
On the other hand, recording media for recording music data have been increased in capacity as represented by DVDs and hard disks, and much music data has been recorded on a single recording medium. Against this background, the usage form of music data is also changing.

For example, in Patent Document 1 below, in parallel with reading of music data stored in a recording device such as a hard disk, music data prefetched a predetermined time before the time to be reproduced is stored in an auxiliary storage device. An audio recording / reproducing apparatus is disclosed. According to this audio recording / reproducing apparatus, even if the information cannot be read from the recording medium, the music data stored in the auxiliary storage device can be used. Continuous playback can be realized. However, the music data stored in the auxiliary storage device is overwritten successively and cannot be dubbed and stored while being played back.

Recently, music data can be downloaded from a server on the Internet by a general personal computer. In this case, the application that executes the download usually creates a child process to correspond to each given task, so other music data can be played during the save process, or songs that are judged unnecessary during the download. It is possible to delete.

However, when recording from a CD drive or a DVD drive connected to a personal computer, the operation by the user is generally restricted or prohibited. Further, for such an operation, a complicated input operation using an input device such as a mouse or a wide monitor screen is indispensable. Therefore, when such a voice recording / reproducing apparatus is used for in-vehicle use, this complicated operation becomes a cause of hindering safe driving. Therefore, such an audio recording / reproducing apparatus is not suitable for in-vehicle use.

On the other hand, Patent Document 2 below discloses an audio recording / reproducing apparatus that reproduces music data stored in a recording medium while storing it in another recording medium at a recording speed higher than the reproduction speed. In this audio recording / reproducing apparatus, it is possible to copy and record in a short time while reproducing music information in a vehicle.

However, Patent Document 2 does not mention the operation by the user during storage while reproducing. Operations in general audio recording / playback devices such as song skipping and fast-forwarding may interfere with the storage processing and playback processing in the above-described audio recording / playback devices, and there are various ways to allow these operations. This is thought to be due to various problems. Therefore, it is considered that the operation by the user is prohibited until the storage is completed, and the satisfaction of the user is not increased.
JP-A-10-199149 JP 2001-155411 A

Means for solving the problems and their effects

The present invention has been made in view of the above problems, and an audio recording / reproducing apparatus that does not hinder the storing process even if the user's operation is allowed during the parallel processing of storing and reproducing music data. The purpose is to provide.

In order to achieve the above object, an audio recording / reproducing apparatus (1) according to the present invention stores a music data from a recording medium in a storage means, reads out the music data from the storage means, and reads out the music data. In the audio recording / reproducing apparatus provided with the control means for performing the reproduction processing for reproducing the image in parallel, the sound recording / reproducing apparatus includes a judging means for judging whether or not the reproduction position designated by the user is in the already saved area, When the storage process is being performed, if the determination unit determines that the designated playback position is within the already stored area, the control unit continues the storage process as it is, while The reproduction processing is performed from the reproduction position.

According to the audio recording / reproducing apparatus (1), when it is determined that the designated reproduction position is within the existing storage area when the storage process is being performed, the storage process is continued. The reproduction process from the designated reproduction position is performed. The reproduction position here means a position where the reproduction processing is performed in a music map (a data array in which all music data stored in a recording medium such as a music CD and stored in a storage means are connected). Say. Further, the existing storage area refers to an area on the music map composed of music data already stored in the storage means. The music data here means digital data forming sound information, and the song data means a set of music data constituting one song.

If the designated playback position is in the existing storage area, the music stored in the storage means can be used without using music data from the recording medium (that is, without interrupting the storage process). If data is used, playback processing from the designated playback position can be performed. In other words, when the designated reproduction position is in the already saved area, the reproduction process from the designated reproduction position can be performed while continuing the preservation process. Therefore, even if the storage process is being performed, an operation desired by the user can be realized within a possible range.

Further, in the audio recording / reproducing apparatus (2) according to the present invention, in the audio recording / reproducing apparatus (1), the control means stores the music data from the recording medium in the storage means at a speed higher than the reproduction speed. The storage processing is performed.

According to the audio recording / reproducing apparatus (2), the storing process for storing the music data from the recording medium in the storage means at a speed faster than the reproducing speed is performed. Accordingly, since a large amount of music data can be stored in the storage unit prior to the reproduction process, it is possible to increase the probability that the reproduction position designation operation by the user can be handled.

Moreover, the audio recording / reproducing apparatus (3) according to the present invention includes the audio recording / reproducing apparatus (1) or (2).
), When the determination process determines that the designated reproduction position is not within the existing storage area, the parallel processing of the storage process and the reproduction process is performed as it is. It is characterized by being configured to be continued.

According to the audio recording / reproducing apparatus (3), when it is determined that the designated reproduction position is not within the existing storage area when the storage process is being performed, the storage process and the reproduction process are performed. The parallel processing is continued as it is. If the specified playback position is not in the existing storage area,
If the music data from the recording medium is not used (that is, the storage process is not interrupted), the reproduction process from the designated reproduction position cannot be performed.
Therefore, even if there is an operation for designating the playback position from the user, the parallel processing of the storage process and the playback process is continued as it is, and the playback process from the designated playback position is not performed. It is possible to reliably prevent the processing from being hindered.

In the audio recording / reproducing apparatus (4) according to the present invention, when the storage process is being performed in the audio recording / reproducing apparatus (3), the reproduction position designated by the judging means is an existing storage area. If it is determined that the operation is not within the range, a notification means for notifying that the operation for designating the reproduction position by the user is an invalid input operation is provided.

According to the audio recording / reproducing apparatus (4), when the storing process is being performed, the determination unit determines that the designated playback position is not within the already stored area (ie,
When the parallel processing of the storage process and the reproduction process is continued as it is and the reproduction process from the designated reproduction position is not performed), an operation for designating the reproduction position by the user is an invalid input operation Will be announced. As a result, the user can easily be aware that the cause of the failure to perform the process according to the operation of designating the reproduction position by the user (that is, the reproduction process from the designated reproduction position) is not a device failure. be able to.

Embodiments of an audio recording / reproducing apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram schematically showing the configuration of an audio recording / reproducing apparatus according to Embodiment (1).
As illustrated, the audio recording / reproducing apparatus according to the embodiment (1) includes a control unit 100, a reading unit 1.
10, a playback unit 130, a temporary storage unit 140, a storage unit 150, and an operation unit 120. These units are connected via a bus 20, and data communication between the units is possible.

The reading unit 110 is controlled by a control signal from the control unit 100, reads music data stored in a recording medium 10 such as a CD, MD, DVD, etc., and sequentially outputs the music data to the bus 20. , MD drive, DVD drive, and the like.

The temporary storage unit 140 is controlled by a control signal from the control unit 100, sequentially stores music data received from the bus 20, and outputs the stored music data to the bus 20, and includes a semiconductor memory and the like. It consists of Note that the storage here is temporary, and is overwritten successively when the capacity of the temporary storage unit 140 becomes full.

The storage unit 150 is controlled by a control signal from the control unit 100, stores music data received from the bus 20, and outputs the stored music data to the bus 20, and includes a hard disk, a DVD, and the like. It is configured.
The playback unit 130 is controlled by a control signal from the control unit 100, converts music data received from the bus 20 into an analog signal, and outputs the analog signal to the speaker 130A.
A conversion circuit, an audio output circuit, and the like are included.
The operation unit 120 enables operation input by a user and outputs operation input information to the control unit 100, and includes an input device such as an operation panel or a remote control.

The control unit 100 controls each of the above units, although not shown, a CPU, a RAM,
It includes a ROM and the like, and is configured to perform arithmetic processing based on signals received from each unit and output a control signal to each unit. Then, based on the operation input information input via the operation unit 120, the music data is read from the recording medium 10, and the music data is read into the temporary storage unit 140 (1-1 in FIG. 1), temporarily stored. The music data is read from the unit 140 and the music data is stored in the storage unit 150 (1-2 in FIG. 1), and the music data is read from the storage unit 150 and played back by the playback unit 130. Processing (1-3 in FIG. 1)
It is the structure which can be performed in parallel. In order to rapidly advance the reading process, the storing process, and the reproducing process in parallel, the CPU is provided separately for each process and can operate independently.

FIG. 2 is a flowchart showing the operation of the control unit 100 in the audio recording / reproducing apparatus according to the embodiment (1).
When the recording medium 10 is inserted into the reading unit 110, in step S200, content information stored in the recording medium 10 such as TOC (table of contents) information in a CD is read from the reading unit 110, and a song map is obtained. create. At this time, collation is performed based on the content information stored in the storage unit 150, and the saved area and the unsaved area are determined for the recording medium 10. Next, the process proceeds to step S201, and it is determined whether or not an operation input indicating that the reading process is started is made via the operation unit 120.

As described above, the existing storage area refers to an area on the music map that includes music data that has already been stored in the storage means (storage unit 150). The unsaved area refers to an area on the song map that is composed of music data that is not yet saved in the storage means (storage unit 150) among the music data to be saved.

If it is determined that the operation input has been made, the process proceeds to step S202 to start the reading process. As a result, the reading unit 110 starts a process of outputting the music data read from the recording medium 10 to the bus 20 at a predetermined frequency, and the read processing circuit included in the control unit 100 reads the read data accordingly. The process of sequentially storing the music data output from the unit 110 in the temporary storage unit 140 is started.

In step S203, it is determined whether or not a predetermined amount of music data has been accumulated in the temporary storage unit 140. If it is determined that the predetermined volume of music data is not stored, the process returns to step S203, while if it is determined that the predetermined volume of music data is stored, step S20 is performed.
Proceed to 4. In step S204, music data for a predetermined capacity is read from the temporary storage unit 140, and the process proceeds to step S205, where the read music data for the predetermined capacity is stored in the storage unit 150, and the saved area and the unsaved area are updated. .

Next, the process proceeds to step S206, the music data for a predetermined capacity is read from the storage unit 150, and then the process proceeds to step S207, where the read music data for the predetermined capacity is read by the playback unit 13.
Transmit to 0.
In step S208, it is determined whether or not an operation input has been made via the operation unit 120. If it is determined that no operation input has been made, the process returns to step S203. On the other hand, if it is determined that an operation input has been made, the process proceeds to operation input process step S209, and after performing control based on the received operation input information, the process proceeds to step S210. In step S210, it is determined whether or not the received operation input information indicates the end of the process. If so, the series of processes is terminated. If not, the process returns to step S203. .

When the designated playback speed is updated based on the user's operation input, the control unit 100 transmits the music data compressed or expanded to a predetermined capacity to the playback unit 130 in step S207. For example, when a playback speed of 4 times is specified, music data having a capacity four times the predetermined capacity is compressed into music data having a predetermined capacity in order to advance the playback speed four times faster than the standard playback speed. On the other hand, when the designated playback speed is 1 time or less, the music data is decompressed to a predetermined capacity. Alternatively, when a negative playback speed is designated, the playback position is advanced in reverse while limiting the settable range of the playback position on the music map. These correspond to the fast forward playback function, the slow playback function, and the rewind playback function, respectively.

FIG. 3 is a flowchart showing in detail the operation input processing step S209 shown in FIG.
As shown in the figure, it is first determined whether or not the operation input received in step S300 includes a playback position designation. The reproduction position designation is input using a music skip button or music number button in a general audio device. If it is determined that the received operation input includes a playback position specification,
On the other hand, if it is determined that the reproduction position designation is not included, the process proceeds to step S302.

In step S301, it is determined whether or not the designated reproduction position designated by the reproduction position designation is within the already saved area. If it is determined that it is in the already saved area, the process proceeds to step S303 to update the reproduction position, and then the operation input process step S209 is terminated. On the other hand, if it is determined that it is not in the already saved area, the process proceeds to step S304 to notify the user that the input operation is invalid, and then the operation input processing step S209 is ended.

In step S302, it is determined whether or not the operation input includes a reproduction speed designation. The playback speed designation is input using a fast-forward button, a rewind button, a double-speed playback button, or the like in a general audio device. If it is determined that the reproduction speed designation is included, the process proceeds to step S305 to update the reproduction speed, and then the operation input processing step S209 is terminated. On the other hand, if it is determined that the reproduction speed designation is not included, the process proceeds to step S306, where control based on other operation input information is performed, and then operation input processing step S209 is terminated.

FIGS. 4A to 4C are diagrams schematically showing the progress of the reading process, the storing process, and the reproducing process on the song map by the audio recording and reproducing apparatus according to the present embodiment. Here, a case is shown in which seven songs A to G stored in the recording medium 10 are saved while being reproduced,
Each piece of music data of the songs A to G is indicated by a rectangle, and the progress of each process of the reading process, the saving process, and the reproduction process is schematically indicated by diagonal lines written in each rectangle.

FIG. 4A shows an example of a state before the reproduction position designation is input by the user during the reproduction process. As shown in the figure, the reproduction process proceeds only up to the reproduction position in the middle of the song A, whereas the reading process and the saving process are performed in the reading position A and the preservation position A in the middle of the song D, respectively.
It has advanced to. This is because the reading process and the saving process do not need to be converted into voice, and can be quickly processed.

When the control unit 100 receives the operation input signal for designating the reproduction position, the designated reproduction position designated by the user is within the existing storage area, that is, in FIG. 4 (a), in order to perform reading processing, storage processing, and reproduction processing in parallel. ) Is determined within the hatched portion of the storage process, and it is determined whether or not the input reproduction position designation is valid. Hereinafter, as an example, as shown in the figure, when the designated playback position designated by the user is the beginning of the song C (designated playback position A) in the already saved area, and the beginning of the song F in the unsaved area The case of (designated reproduction position B) will be described.

FIG. 4B shows a case where the designated reproduction position A is operated and input in the state of FIG. As shown in the figure, since the designated playback position A is in the already stored area, there is no problem even if the playback processing from the designated playback position A is performed, the control unit 100 updates the playback position to the designated playback position A. The reproduction process is performed from here.

FIG. 4C shows a case where the designated reproduction position B is operated and input in FIG. As shown in the figure, since the designated reproduction position B is in the unsaved area, the corresponding music data is not yet saved in the storage unit 150, so that the reproduction process cannot be performed from here.
Therefore, the control unit 100 treats the operation input at the designated reproduction position B as invalid and continues the reproduction process from the middle of the music piece A.

According to the audio recording / reproducing apparatus according to the embodiment (1), when the saving process is being performed, if the reproduction position designated by the user is within the already saved area, the saving process is continued. The reproduction process from the designated reproduction position is performed as it is. On the other hand, when the designated playback position is not within the already stored area, the parallel processing of the storage processing and the playback processing is continued as it is.

If the designated playback position is in the existing storage area, the music stored in the storage unit 150 can be used without using music data from the recording medium 10 (that is, without interrupting the storage process). If data is used, playback processing from the designated playback position can be performed. In other words, when the designated reproduction position is in the already saved area, the reproduction process from the designated reproduction position can be performed while continuing the preservation process. Therefore, even if the storage process is being performed, an operation desired by the user can be realized within a possible range. In addition, by specifying the playback speed, a slow playback function and a fast-forward playback function can be realized, and user satisfaction can be increased. In particular, the fast-forward playback function is convenient because it can search music data to be listened to while listening.

It is the block diagram which showed schematically the structure of the audio | voice recording / reproducing apparatus concerning Embodiment (1) of this invention. It is the flowchart which showed operation | movement of the control part in the audio | voice recording / reproducing apparatus which concerns on embodiment (1). It is the flowchart which showed the operation input process step shown in FIG. 2 in detail. It is the figure which showed typically the progress on the music map of the reading process by the audio | voice recording / reproducing apparatus which concerns on embodiment (1), a preservation | save process, and a reproduction | regeneration process, (a) is a reproduction | regeneration position during reproduction | regeneration processing. An example of a state before the designation is input by the user, (b) shows a case where the designated reproduction position A is operated and input, and (c) shows a case where the designated reproduction position B is inputted.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Recording medium 20 Bus | bath 100 Control part 110 Reading part 120 Operation part 130 Playback part 130A Speaker 140 Temporary storage part 150 Storage part

Claims (4)

Audio recording / reproduction provided with a control means for performing a storage process for storing music data from a recording medium in a storage means and a reproduction process for reading the music data from the storage means and reproducing the read music data in parallel In the device
Having a judging means for judging whether or not the reproduction position designated by the user is in the already saved area;
When it is determined that the designated playback position is within the already stored area when the storage process is being performed,
An audio recording / reproducing apparatus, wherein the control means causes the storage process to be continued as it is, while the reproduction process is performed from the designated reproduction position. 2. The audio recording / reproducing apparatus according to claim 1, wherein the control unit causes the storage process to store the music data from the recording medium in the storage unit at a speed faster than the reproduction speed. When the storage process is being performed, if the determination unit determines that the designated playback position is not within the already stored area, the parallel process of the storage process and the playback process is continued. 3. The audio recording / reproducing apparatus according to claim 1, wherein the audio recording / reproducing apparatus is configured as described above. When the storing process is being performed, if the determination unit determines that the specified playback position is not within the already stored area, an operation for specifying the playback position by the user is an invalid input operation. 4. The audio recording / reproducing apparatus according to claim 3, further comprising notification means for notifying the effect.

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