JP2005293669A - Information recording/reproducing device and method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information recording/reproducing device and an information recording/reproducing method by which data writing can be smoothly and speedily continued without breaking the data even when the data writing is interrupted, and to provide a program. <P>SOLUTION: A TOC information recording section 11 and a CD discriminating section 12 are arranged on a CD player 2. A recording control section 8 is constituted so that data writing to a hard disk 7 is interrupted when the main power source system of the device 1 is turned off or the CD is ejected. Also, a temporary track preserving section 9 for temporarily storing the data written into the hard disk 7 before interruption as a temporary one track, and a recording section 10 of a sub-code for indicating the position where data writing is interrupted, are provided to the recording control section 8. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an information recording / reproducing technique for writing data on a disc to a recording medium side, and more particularly to an information recording / reproducing apparatus, method, and program capable of smoothly continuing once interrupted data writing.

  2. Description of the Related Art In recent years, hard disk devices that are integrated with a CD player are known as in-vehicle information recording / reproducing devices. In this apparatus, songs reproduced by the CD player are recorded in the hard disk in order, and thereafter, the music recorded on the hard disk side can be reproduced without having to bother inserting the CD into the CD player. . According to such a hard disk device, it is possible to reproduce audio data continuously for a long time without troublesome CD replacement work. As a type of CD to be inserted into the CD player, CD-DA in which music is recorded in a digital audio format or a disc in which music is recorded in a compression format such as MP3 is used.

In this type of hard disk device, CD audio data is usually written on the hard disk side in units of tracks. However, data writing to the hard disk is interrupted if the ACC power is turned off or the CD being played is removed from the apparatus while data is being written to a certain track. Data writing can be continued by turning the ACC power on again or by reinserting the same CD and playing it back. In this case, the data must be written before the interruption so that the data is not interrupted. Of the recorded data, all the tracks for which writing was interrupted are deleted, and writing is started again from the beginning of the track.
JP 2001-143369 A

  By the way, in the conventional information recording / reproducing apparatus, when the ACC power supply of the apparatus is turned off or the CD is removed, all the commands up to that time may be cleared. Therefore, when the data writing is interrupted, the data writing command input by the user before the interruption becomes invalid, and it is requested to perform the operation again to continue the data writing.

  Even if the data writing command is backed up, when writing is interrupted, all tracks being written are discarded. For this reason, the same portion must be written for one track, which causes a double writing time, which increases the processing time. In many cases, the interruption associated with such data writing interruption is not intended by the user. For this reason, it is easy to have an impression that operation feeling is low, and the improvement has been awaited.

  The present invention has been proposed in order to solve such a problem, and its purpose is to allow data writing to be continued smoothly and quickly without interruption even when data writing is interrupted. An information recording / reproducing apparatus, method, and program are provided.

  In order to achieve the above object, the invention of claim 1 is characterized in that a data recording disc is removably accommodated to control the reproduction of the disc, and the data on the disc can be written. In an information recording / reproducing apparatus provided with a recording medium capable of rewriting data and a recording control unit for controlling reading and writing of data with respect to the recording medium, when interrupting data writing to the recording medium, Temporary data storage means for temporarily storing data written in a recording medium as temporary data, interruption position information recording means for recording position information where writing was interrupted when interrupting data writing to the recording medium, and The TOC information recording means for recording the TOC information of the disc and the main power system of the information recording / reproducing apparatus are turned on or the disc is inserted. When determining whether or not the disk inserted in the apparatus is the same as the disk when the data writing is interrupted according to the TOC information, and if both are the same, Disc discriminating means for outputting a signal, and the reproduction control unit is configured to resume disc reproduction based on the interruption position information when receiving the same disc signal from the disc discriminating unit, and The recording control unit interrupts data writing to the recording medium when the main power system of the information recording / reproducing apparatus is turned off or the disk is ejected, and the reproduction control unit is based on the interruption position information. When the disc playback is resumed, the data from the disc that has started playback halfway and the temporary data that has been temporarily stored Is characterized in that to check the match is configured to connect the data.

  The invention according to claim 2 is obtained from the viewpoint of the method according to claim 1, and includes a playback control step for controlling the playback by inserting a disk on which data is recorded, and writing and rewriting of data. In an information recording / reproducing method including a recording control step for controlling reading and writing of data with respect to a possible recording medium, when the main power supply system is turned off or the disk is ejected, the data writing to the recording medium is performed. A write interruption step for interrupting, a temporary data storage step for temporarily storing data written in the recording medium before the interruption as temporary write data when interrupting data writing to the recording medium, and the recording medium An interruption position information recording step for recording information on a position where the writing was interrupted, TOC information recording step for recording the TOC information, and when the main power supply system is turned on or when the disc is inserted, according to the TOC information, the inserted disc is the same as the disc when the data writing is interrupted. A disc discriminating step for discriminating whether or not the disc is the same disc in the disc discriminating step, and a playback restarting step for restarting disc playback based on the interruption position information, and starting playback halfway A data connection step of confirming a match between the data from the disk and the temporarily stored temporary data and connecting the data.

  The invention of claim 3 is obtained from the viewpoint of a program according to the invention of claim 1, and uses a computer to insert a disk on which data is recorded and control its reproduction, In an information recording / reproducing program for controlling reading / writing of data with respect to a rewritable recording medium, a write interruption function for interrupting data writing to the recording medium when a main power supply system is turned off or the disk is ejected A temporary data storage function for temporarily storing data written to the recording medium before the interruption as temporary write data when interrupting data writing to the recording medium, and writing data to the recording medium. When interrupting, the interrupt position information recording function for recording the information of the position where writing was interrupted, and the TOC information of the disc TOC information recording function for recording and whether or not the inserted disc is the same as the disc when data writing was interrupted according to the TOC information when the main power supply system is turned on or when the disc is inserted Disc discriminating function to discriminate, and disc discriminating step when the disc discriminating step determines that the disc is the same disc, a playback restarting function for restarting disc playback based on the interruption position information, A data connection function for confirming a match between the data and the temporarily stored temporary data and connecting the data is realized in a computer.

  In the present invention as described above, data writing to the recording medium is interrupted when the main power supply system is turned off or the disk is ejected, but at the same time the data before the interruption is temporarily stored as temporary write data. By recording the information of the position where the writing is interrupted and the TOC information of the disc, data writing can be continued smoothly and quickly.

  That is, when the main power supply system is turned on or when a disk is inserted, it is determined whether the inserted disk is the same as the disk for which data writing has been interrupted according to the TOC information recorded at the time of interruption. At this time, if it is determined that the inserted disc is the same as the disc at the time of data writing interruption, based on the interruption position information recorded at the time of interruption, disc playback is resumed from the point of interruption and The data is connected after confirming the coincidence between the data from the disc that has started playback and the temporarily stored temporary data. As a result, smooth and quick data writing can be continued.

  As described above, according to the information recording / reproducing apparatus, method, and program of the present invention, even when data writing is interrupted, the portion where writing is interrupted by turning on the main power system or reinserting the disk Thus, data writing can be continued and an excellent feeling of use can be obtained.

  Next, the best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be specifically described with reference to the drawings. Note that this embodiment is realized by controlling a computer including a peripheral device with a program, and the implementation mode of the hardware and the program in this case can be changed as appropriate. In addition to the information recording / reproducing apparatus and method, the present invention can be grasped as a program itself or a computer-readable recording medium recording the program. Therefore, it demonstrates using a virtual functional block diagram as what implement | achieves each function of this invention and this embodiment.

[1. Configuration]
The present embodiment is applied to an in-vehicle hard disk navigation device 1. This apparatus writes audio data reproduced by the CD player 2 in the hard disk 7 and records it, and reproduces the audio data recorded on the hard disk 7, and includes the elements shown in the functional block diagram of FIG. .

  That is, a music player CD player 2 is integrally installed. A mechanism unit 4 including a pickup, a servo motor, and the like, and a reproduction control unit 5 for controlling the mechanism unit 4 are provided. . Further, the CD player 2 is provided with a TOC information recording unit 11 and a CD determination unit 12.

  The TOC information recording unit 11 records the TOC information of the CD when the CD is ejected from the CD player 2. The CD discriminating unit 12 works when the CD in the CD player 2 is once ejected and then inserted again, and is the same as the CD when the newly inserted CD interrupts data writing. Whether or not there is is determined by the TOC information. If both are the same, the same disc signal is output to the reproduction control unit 5, and if both are not the same, a non-identical disc signal is output to the recording control unit 8 (described in detail later). It is like that.

  The reproduction control unit 5 amplifies the audio data read from the CD, outputs it to the speaker 6, and writes the CD audio data to the hard disk 7. Further, when the reproduction control unit 5 receives the same disc signal from the CD discriminating unit 12, the reproduction control unit 5 acquires a subcode from a subcode recording unit 10 described later, and resumes CD reproduction based on the subcode. Further, even when the main power system of the apparatus 1 is turned off without ejecting the CD being reproduced and then turned on again, the reproduction control unit 5 acquires the subcode from the subcode recording unit 10 and based on this, obtains the CD. Playback is resumed.

  A hard disk 7 and a recording control unit 8 are provided on the recording device 3 side. The hard disk 7 is a recording medium in which audio data reproduced by the CD player 2 can be written and data can be rewritten. The hard disk 7 stores a navigation program and road map data including various kinds of point information, and a recording area for recording audio data from the CD player 2 is formed.

  The recording control unit 8 expands the data read from the hard disk 7, a memory controller 8 a that controls reading and writing of data to the hard disk 7, an encoder unit 8 b that converts audio data input from the CD player 2 side into compressed data, and the like. And a decoder unit 8 c for outputting the expanded data to the speaker 6.

  The recording control unit 8 is configured to interrupt data writing to the hard disk 7 when the main power system of the hard disk navigation device 1 is turned off or when the CD is ejected from the CD player 2. The recording control unit 8 is provided with a temporary track storage unit 9 and a subcode recording unit 10. The temporary track storage unit 9 is means for temporarily storing data written to the hard disk 7 before the interruption as a temporary track when the data writing to the hard disk 7 is interrupted. The subcode recording unit 10 is means for recording a subcode such as minutes, seconds or frames as information indicating a position where data writing to the hard disk 7 is interrupted.

  Further, the recording control unit 8 includes an audio data from a CD that has started reproduction halfway and a temporary track storage unit when the reproduction control unit 5 resumes disk reproduction based on the subcode from the subcode recording unit 10. After confirming the coincidence of the audio data of the temporary track temporarily stored in the track 9, the tracks are connected. At this time, the connected audio data is overwritten on the track temporarily stored as a temporary track after the track recording is completed. When the recording control unit 8 receives a non-identical disc signal from the CD discriminating unit 12, the recording control unit 8 erases one temporary track stored in the temporary track storage unit 9.

  By the way, the hard disk navigation device 1 is provided with a battery 13, and two power sources of a main power system and a backup system are supplied from the battery 13. The backup system is used when the main power supply system is turned off. When the main power supply system is turned off, the processes of the temporary track storage unit 9 and the subcode recording unit 10 when the write data is interrupted are naturally from the backup system. This is done by supplying power.

[2. Action]
Subsequently, in the present embodiment, when audio data is written from the CD player 2 to the hard disk 7 and recorded, recording is interrupted due to turning off the main power supply system or ejecting the CD, using the flowchart of FIG. explain.

  First, when the user operates the “record” key, which is an audio operation key, recording is started in units of tracks or discs on the currently played CD (step 1), and it is confirmed whether the recording is completed. Later (step 2), the recording is terminated. If the user operates the “recording stop” key, the data writing can be stopped, and the “recording” is completed up to the track where the data writing has been completed.

  When recording is not finished (NO in step 2) and the ignition is turned off (YES in step 3), the main power supply system is turned off, CD playback stops, and data writing to the hard disk 7 is interrupted. (Step 4). At this time, the temporary track storage unit 9 temporarily stores the data written in the hard disk 7 before the interruption as a temporary track (step 5). Further, the subcode recording unit 10 records the subcode at the time when the writing is interrupted (step 6). As the main power supply system is turned off, the temporary track storage unit 9 and the subcode recording unit 10 are supplied with power from the backup power supply system, and the processes in steps 6 and 7 are performed by supplying power from the backup power supply. The

  Even if the ignition is not turned off (NO in step 5), when the CD is ejected from the CD player 2 (YES in step 7), the CD reproduction is stopped and the data writing to the hard disk 7 is interrupted ( Step 8). Also at this time, the temporary track storage unit 9 temporarily stores the data written in the hard disk 7 before the interruption as a temporary track (step 9), and the subcode recording unit 10 stores the subcode at the time when the writing is interrupted. Record (step 10). Further, when the CD is ejected from the CD player 2, the TOC information recording unit 11 records the TOC information of the CD (step 11). If the CD is not ejected from the CD player 2 (NO in step 7), the process returns to before step 2, and it is confirmed whether the recording is finished.

  When the ignition is turned on again from the state where the ignition is turned off (YES in step 12), the main power supply system is turned on and the reproduction control unit 5 acquires the subcode from the subcode recording unit 10, and based on this, the CD Playback is resumed (step 13), and the recording control unit 8 resumes data writing from the subcode to the hard disk 7 (step 14).

  When a CD is once ejected from the CD player 2 and then inserted again (YES in step 15), the CD determining unit 12 receives the TOC information about the ejected CD from the TOC information recording unit 11, and this TOC. The CD is discriminated based on the information. That is, it is confirmed whether or not the inserted CD is the same as the ejected CD, that is, the CD when data writing is interrupted (step 16).

  If the inserted CD is not the same as the ejected CD (NO in step 16), the CD discriminating unit 12 outputs a non-identical disc signal to the recording control unit 8. The recording control unit 8 having received this signal automatically erases one temporary track stored in the temporary track storage unit 9 (step 17), and ends the recording process.

  On the other hand, if the inserted CD is the same as the ejected CD, the CD discriminating unit 12 outputs the same disc signal to the reproduction control unit 5. The reproduction control unit 5 receiving this signal acquires the subcode from the subcode recording unit 10 and resumes CD reproduction based on the subcode (step 13). The recording control unit 8 writes data from the subcode to the hard disk 7. Is resumed (step 14).

  The recording control unit 8 resumes data writing from the subcode, so that recording of the temporary track temporarily stored in the temporary track storage unit 9 is continued. In the continuation of recording, the audio data from the CD that has been reproduced from the middle is confirmed to match the audio data of one temporary track temporarily stored in the temporary track storage unit 9, and the tracks are connected. As described above, the connected audio data is overwritten on the track temporarily stored as a temporary track after the track recording is completed.

[3. Effect]
According to the above-described embodiment, even if data writing is interrupted due to turning off the main power supply system or ejecting the CD, the data at the time when the writing is interrupted does not need to be re-executed. Since the subcode is known, it is possible to accurately determine the resumption point of data writing. Therefore, the same data is not repeatedly written as in the conventional case, which can contribute to shortening the writing time, and a comfortable and quick data writing process can be realized.

  Further, by recording the TOC information of the CD, it is possible to easily confirm whether or not the newly inserted CD is the same as when the writing was interrupted once the CD is ejected. Thereby, it is possible to automatically execute processing such as whether data writing is continued or whether a new disc reproduction is performed. For this reason, the user experience is improved without bothering the user.

[4. Other Embodiments]
The present invention is not limited to the above embodiment, and the recording medium used in the present invention includes not only a hard disk but also a large-capacity semiconductor memory, and the recording formats include mp3, wma, avi, Various formats such as mpeg1, mpeg2, mpeg4 and DV can be adopted. The present invention is suitable for a vehicle-mounted device, but is not limited to this, and can be widely applied to home and portable information recording / reproducing devices.

  Moreover, the flowchart of FIG. 2 is an example of processing, and can be changed as appropriate. For example, if the CD inserted in step 16 is not the same as the ejected one, the temporary track of the temporary track storage unit 9 is not automatically deleted, but is deleted after inquiring the user. May be. In the above embodiment, the CD determination is not performed when the CD is inserted and there is no evidence that the CD is ejected. However, every time the main power system of the hard disk navigation device 1 is turned on, the CD determination unit. 12 may be set so that the CD is discriminated.

The functional block diagram which shows the structure of embodiment of this invention. The flowchart which shows the process sequence in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Hard disk navigation apparatus 2 ... CD player 3 ... Recording apparatus 4 ... Mechanism part 5 ... Playback control part 6 ... Speaker 7 ... Hard disk 8 ... Recording control part 8a ... Memory controller 8b ... Encoder part 8c ... Decoder part 9 ... Temporary track preservation | save Section 10 ... Subcode recording section 11 ... TOC information recording section 12 ... CD discriminating section

Claims (3)

A reproduction control unit for controlling the reproduction of the disc by detachably storing a disc on which data is recorded, a recording medium on which data on the disc can be written and rewritable, and data for the recording medium In an information recording / reproducing apparatus provided with a recording control unit that controls reading and writing,
Temporary data storage means for temporarily storing data written to the recording medium before the interruption as temporary data when interrupting the data writing to the recording medium;
When interrupting data writing to the recording medium, interrupted position information recording means for recording position information at which writing was interrupted,
TOC information recording means for recording the TOC information of the disc;
Whether the disk inserted in the apparatus according to the TOC information is the same as the disk when data writing was interrupted when the main power system of the information recording / reproducing apparatus is turned on or the disk is inserted Disc discriminating means for outputting the same disc signal to the reproduction control unit if both are the same,
The reproduction control unit is configured to resume the disc reproduction based on the interruption position information when receiving the same disc signal from the disc discriminating means,
Further, the recording control unit interrupts data writing to the recording medium when the main power supply system of the information recording / reproducing apparatus is turned off or the disk is ejected, and the reproduction control unit is configured to interrupt the interruption position information. When the disc playback is resumed based on the above, it is configured that the data connection from the disc that has started playback midway and the temporary data that has been temporarily saved are confirmed and connected. A characteristic information recording / reproducing apparatus. An information recording / reproducing method including a reproduction control step for inserting a disk on which data is recorded and controlling reproduction thereof, and a recording control step for controlling data reading / writing with respect to a recording medium capable of writing and rewriting data In
A write interruption step of interrupting data writing to the recording medium when the main power system is turned off or the disk is ejected;
A temporary data storage step of temporarily storing data written to the recording medium before the interruption as temporary write data when interrupting data writing to the recording medium;
When interrupting the writing of data to the recording medium, an interrupted position information recording step for recording information of the position at which the writing was interrupted;
A TOC information recording step for recording TOC information of the disc;
Disc discriminating step for discriminating whether the inserted disc is the same as the disc when data writing is interrupted according to the TOC information when turning on the main power system or inserting the disc;
If it is determined in the disc determination step that they are the same disc, a playback restart step for restarting disc playback based on the interruption position information;
An information recording / reproducing method, comprising: a data connection step of confirming a match between the data from the disc that has been reproduced in the middle and the temporarily stored temporary data and connecting the data. In an information recording / reproducing program for controlling reading and writing of data on a recording medium capable of writing and rewriting data by inserting a disk on which data is recorded using a computer,
A write interruption function for interrupting data writing to the recording medium when the main power supply system is turned off or the disk is ejected;
When interrupting data writing to the recording medium, temporary data storage function for temporarily storing data written to the recording medium before the interruption as temporary writing data;
An interruption position information recording function for recording information of a position where writing was interrupted when interrupting the writing of data to the recording medium;
A TOC information recording function for recording the TOC information of the disc;
A disc discriminating function for discriminating whether the inserted disc is the same as the disc when data writing is interrupted according to the TOC information when turning on the main power system or inserting the disc;
If it is determined in the disc determination step that they are the same disc, a playback restart function for restarting disc playback based on the interruption position information;
A data connection function for connecting data by confirming the coincidence between the data from the disc that has started playback in the middle and the temporary data temporarily stored;
An information recording / reproducing program which is realized by a computer.

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