WO2005114665A1

WO2005114665A1 - Information recording/reproducing device, information recording method, and its program

Info

Publication number: WO2005114665A1
Application number: PCT/JP2005/009053
Authority: WO
Inventors: Nobuo Tarui; Ryoji Sugino; Yoshiya Nonaka; Noritaka Nii; Hirobumi Iwaji; Takeshi Mutoh; Masashi Aoyama
Original assignee: Pioneer Corporation; Pioneer System Technology, Inc.; Tech Experts Inc.
Priority date: 2004-05-20
Filing date: 2005-05-18
Publication date: 2005-12-01
Also published as: JP2007172668A

Abstract

An information recording/reproducing device, an information recording/reproducing method, and an audio program, wherein musical compositions can be recorded on even a non-stop CD without need to record them in order from the first musical composition, audio data can be continuously recorded even if the musical compositions are recorded irrespective of the their order, and the sound can be continuously reproduced. A system controller acquires TOC from a CD (S2), starts searching for CDDB (S3). In this case, the system controller reproduces the musical composition on the CD from near the end of the first musical composition (S7), judges a portion near the end of a musical composition by acquiring a sub-code from the CD, and stores musical composition interval data (CD data) in several samples (S8, S9, S10). S7 to S10 are repeated till the second last track (S6), and the musical composition interval data recorded on all the tracks are stored. If search for the CDDB is ended (S4), a playlist is created from the information on an HDD. The playlist and the musical composition interval data recorded on all the tracks are associated with each other and stored on the HDD (S5).

Description

Information recording / reproducing apparatus, information recording method, and program therefor

Technical field

The present invention relates to an information recording / reproducing device, an information recording method, and an information recording program.

Background art

[0002] As an information recording / reproducing device for reproducing and recording program information, for example, a plurality of music data recorded on an information recording medium such as a compact disk is reproduced and recorded on a hard disk, and the recorded plurality of music data is reproduced. There is an information recording / reproducing apparatus for reading and reproducing music data from a hard disk.

[0003] In an information recording / reproducing apparatus equipped with this hard disk, for example, a plurality of music data recorded on a compact disk are compressed based on various formats and recorded on the hard disk, and a plurality of music data recorded on the hard disk are recorded. Read sequentially, expand and play. As the compression method, there are, for example, MP3 (MPEG 1: Moving Picture Experts Group 1; Taishi-Layer III), ATRAC3 (Adaptive Transform Acoustic Coding) improved ATRAC3, and the like.

[0004] For example, according to an information recording / reproducing apparatus which records all music data recorded on an information recording medium such as a plurality of compact discs on a hard disk and reads out and reproduces the music data on the hard disk, Since music data is read from the hard disk during data playback, the user does not need to replace the compact disc and can enjoy comfortable continuous playback.

[0005] In the above information recording / reproducing apparatus, for example, a plurality of music data is recorded on a hard disk from an information recording medium that reproduces a plurality of music data without a sound gap, such as a non-stop CD. In this case, the music data without interruption can not be reproduced as in the non-stop CD unless the recording is continued without interruption. Therefore, music data compressed and recorded on a hard disk (hereinafter referred to as compressed music data) will be described. During playback, the sound may be interrupted between tracks, giving the user who listens to the sound unnatural.

[0006] In the case where music data is not continuously recorded !, the reason why a sound break occurs between tracks when the recorded compressed music data is reproduced will be described below.

[0007] FIG. 1 (a) is an explanatory diagram showing that when a plurality of music data recorded on a hard disk are successively reproduced, silence data is reproduced and a sound break occurs.

[0008] In Fig. 1 (a), the upper half (two rows from the top) of the data structure schematically shown is music data recorded on a CD, and the lower half (the lower power is also two rows). Indicates music data recorded on the hard disk. On the CD, music data is recorded in units of tracks (Track), whereas on the hard disk, compressed music data is recorded in units of files (FILE).

[0009] Here, the break of Track indicates the break of music data recorded on the CD. In other words, the music data of lTrack is one music, and the break of the track indicates the break between a certain music and the music reproduced next to the music. The minimum unit of the data structure in the CD is called a frame, and one Track in the CD is subdivided by a predetermined number of frames. The minimum recording unit of the data structure of the FILE storing compressed music data on the hard disk is called a block, and the FILE storing compressed music data is usually divided by a predetermined number of blocks. The FILE is configured to be able to store a plurality of compressed music data.

[0010] As can be seen from Fig. 1 (a), one frame length in CD and one block length in FILE differ from each other, and the music data recorded or stored in them is compressed. Even if music data of CD lTrack is stored in a FILE, if it fits in the end of the block of the FILE, the unrecorded area is almost completely left unrecorded because of the difference between the file and the compressed data.

[0011] As shown in Fig. 1 (a), when music data of Track n-1 is recorded on a CD-capable hard disk, the recording is terminated at the track break between Track n-1 and Track n on the CD, and the hard data is recorded. Create a FILE in disk and store the compressed music data of Track n-1. However, before reaching the end of the last block in Track n-1, the music data If the recording is completed, silent data is recorded in the unrecorded area up to the end of the intermediate position force, and the storage of the compressed music data for the last block in Trackn-1 is completed. As a result, a silence part (a shaded part in Fig. 1 (a)) is formed in the last block of the hard disk FILE for Track n-1.

FIG. 1B is an explanatory diagram in the case where music data of Track n is recorded on a hard disk. When recording the music data of Track n on the hard disk, the music data of Track n is reproduced from the track segment between Track n-1 and Track n, and the compressed music starts from the beginning of the first block for Track n in the FILE on the hard disk. Store as data. Therefore, if the compressed music data of Track n-1 and Track n recorded on the hard disk are played back in succession, the interruption of sound will occur due to the playback of silence data.

[0013] The above is a case in which silence data is stored in an unrecorded area and a sound break occurs due to the reproduction of the silence data. In the example of Fig. 2, the head of the music data of Track n is set to the track of the node disk. This is the case where the compressed music data is stored in the unrecorded area of the last block in n-1 and the storage of the compressed music data for the last block in Track n_l is completed. In this case, the first part (shaded part) of Track n is recorded in the last block of Track n-1. By doing so, it is possible to eliminate the occurrence of sound interruption when the compressed music data of Track n-1 and Track n recorded on the hard disk are played back successively.

[0014] When recording music data on Track n of a CD while performing the same operation, as in Fig. 1 (b),

The music data of Track n is reproduced from the track segment between Track n-1 and Track n, and stored as compressed music data of the first block of Track n in FILE on the hard disk. In that case, if the compressed music data of Track n-1 and Track n recorded on the hard disk are played back in succession, the beginning of Track n will be reproduced in duplicate, and even in this case, the user will feel unnatural. Will give.

[0015] As described above, when the music data of Track n-1 and Track n of the CD is not continuously recorded on the hard disk, when the end of the music data of Track n_l of the CD is recorded, c. If the compressed music data in the last block of the compressed music data in the hard disk is not stored halfway, the silence data is stored in the unrecorded area (remaining part) of the last block. Even if the compressed music data of n is played continuously, the sound breaks Will be born.

[0016] Furthermore, when the end of the music data of Track n-1 of the CD to be solved is recorded, the data is stored only halfway in the last block of the compressed music data on the hard disk. Even if the beginning data of Track n is stored in the unrecorded area (remaining part) of the last block, duplicate compressed music data will be recorded, and if Track n-1 and Track n are played continuously, Track n is reproduced at the beginning.

[0017] One way to smoothly connect and play between songs is to play back the end of the song with low volume or fade-out, and to play the next song simultaneously. There has been proposed a method of smoothly connecting music pieces and reproducing the music at a good tempo (for example, see Patent Document 1).

Patent Document 1: JP 2003-58192 (Fig. 3)

Disclosure of the invention

Problems to be solved by the invention

[0018] However, while the method described in Patent Document 1 is used, the sound breaks occurring between the tracks are linked to each other by lowering the volume or by fading out the tracks to reproduce the music at a good tempo. It does not realize the original playback format like non-stop CDs. Therefore, in order to accurately reproduce music data recorded on a non-stop CD with compressed music data recorded on a node disk, it is necessary to continuously record a plurality of music data without interruption. Yes, recording cannot be performed intermittently at any time. Means for solving the problem

As described above, the problem to be solved by the present invention is, for example, an information recording / reproducing apparatus capable of recording content information on a hard disk or the like so that a user does not feel unnatural when reproducing. Another object of the present invention is to provide an information recording and reproducing method and an information recording and reproducing program.

[0020] An information recording / reproducing apparatus according to claim 1 of the present invention comprises: a reproducing unit that reproduces the content information from an information recording medium on which a plurality of pieces of content information are recorded; Recording means for recording the reproduced content information,

In an information recording / reproducing apparatus including the reproducing means and a control means for controlling the recording means, the control means may include a head force of one piece of content information and data indicating an end position in a predetermined amount of information. When recording the content information arbitrarily selected in the recording means in accordance with one piece of content information and recording the arbitrarily selected content information in the recording means, the data corresponding to the selected content information and the selected The recording of the selected content information in the recording means is started when the data indicating the reproduction position of the content information matches.

[0021] The information recording method according to claim 4 of the present invention reproduces one piece of content information from an information recording medium on which a plurality of pieces of content information are recorded, and sets a predetermined amount of head force in the one piece of content information. Recording the data indicating the end position in the information of the corresponding content information, the step of reproducing the arbitrarily selected content information, and the data indicating the reproduction position of the reproduced content information. A step of determining whether or not data corresponding to the selected content information matches; and a step of starting recording of the selected content information when it is determined that they match.

[0022] An information recording program according to a fifth aspect of the present invention causes a computer to execute the information recording method according to the fourth aspect. Brief Description of Drawings

[1] This is an explanatory diagram of a mechanism in which a silent portion is inserted between songs recorded on a hard disk.

FIG. 2 is an explanatory diagram of a process of recording data that is duplicated between songs.

[3] FIG. 3 is a schematic block diagram illustrating an information recording / reproducing device according to an embodiment of the present invention.

[4] Fig. 4 is a flowchart for explaining an operation for storing inter-song data in the information recording / reproducing apparatus of the present embodiment.

[5] FIG. 5 is a flowchart for explaining a recording operation in the information recording / reproducing apparatus of the present embodiment. FIG. 6 is a data structure at the time of recording in the information recording / reproducing apparatus of the present embodiment.

[Fig. 7] Fig. 7 is a diagram for obtaining inter-song data in the case of realizing using inter-song data, and an explanatory diagram of a structure for connecting sounds using inter-song data during recording.

FIG. 8 is an explanatory diagram of a structure for storing a counter value in the case of realizing using a counter, and an explanatory diagram of a structure for connecting sounds using the counter value.

Explanation of symbols

[0024] The symbols in the figure, 1 is a compact disc (CD), 2 is a pickup, 3 is a carriage, 4 is a servo control circuit, 5 is a dryno, 6 is a compression / expansion digital signal processor (DSP), and 7 is System controller, 8 is buffer memory, 9 is music detection device, 10 is hard disk (HDD), 11 is spindle motor, 12 is DZA conversion, 13 is operation unit, 14 is CD playback block, 15 is system bus Reference numeral 16 denotes an amplifier circuit (AMP), reference numeral 17 denotes a speaker, and reference numeral 100 denotes an information recording / reproducing device. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of an information recording / reproducing apparatus according to the present invention will be described in detail with reference to the drawings.

The information recording / reproducing apparatus according to the present embodiment records data from an information recording medium such as a compact disk (CD), a mini disk (MD), or a DVD to a data recording unit including a hard disk (HDD), a flash memory, and the like. It is an information recording / reproducing device with a function to perform, and is also applicable to in-vehicle devices such as a car audio device or a car navigation device.

FIG. 3 is a schematic block diagram for explaining the information recording / reproducing device 100 of the present embodiment.

[0028] The information recording / reproducing apparatus 100 includes a CD reproducing block 14, a music piece detecting device 9, a compression / expansion digital signal processor (hereinafter, compression / expansion DSP) 6, an HDD 10, a system controller 7, and a knocker 8 , A D / A converter 12, an AMP 16, and a speaker 17. In FIG. 3, a compact disc (CD) 1 is shown as an information recording medium as an information recording medium. Force MD (Mini Disc), DVD (Digital Versatile Disc) And the like can be similarly applied.

[0029] The CD playback block 14 includes a spindle motor 11 for rotating the CD1, a pickup 2 for irradiating the CD1 with reading light and reading information (content information such as music data and moving image data) stored on the CD1 (information Playback unit), a carriage 3 for moving the pickup 2 in the radial direction of the CD 1, a servo control circuit 4 for driving the pickup 2, the carriage 3, and the spindle motor 11, and a driver 5. Hereinafter, the content information recorded on CD1 will be described as music data.

The CD reproducing block 14 starts a reproducing operation when the CD 1 is loaded on the disk table, and drives the CD 14 to rotate at a constant speed by the spindle motor 11. Then, the music data stored in the pit form on the CD 1 is read out by the pickup 2 and supplied to an RF amplifier (not shown).

The pickup 2 is mounted on a carriage 3 and driven by a driver 5 controlled by a servo control circuit 4. The pickup 2 includes an optical system including a laser diode (not shown), a polarizing beam splitter, and an objective lens, and an optical detector for detecting reflected light. The output of the pickup 2 is supplied to the compression / decompression DSP 6 through the system bus 15.

[0032] The servo control circuit 4 generates various servo drive signals such as focus, tracking, thread, and spindle from a focus error signal, a tracking error signal from the RF amplifier, and a spindle error signal from the decoder. 5 is controlled to execute various servo operations.

In addition, the servo control circuit 4 supplies the data subjected to the demodulation and error correction processing to the compression / decompression DSP 6, and supplies the identification information recorded on the CD 1 to the system controller 7. The identification information is TOC (Table of contents) information and the like recorded in the lead-in area of the CD1, and the TOC information and the like are used to identify music data playback conditions and music data. Be prepared with information such as numbers.

The inter-song detection device 9 detects the inter-song between music data being reproduced on the CD 1 and music data reproduced next. The inter-song detection device 9 monitors the music data supplied to the compression / decompression DSP 6, and determines whether the data of the Q channel in the subcode information Monitor the power of the music data coming between the songs. The sub-code Q is data indicating the elapsed playback time. By monitoring the elapsed playback time of the music data being played, it is possible to detect the interval between songs. In this embodiment, the interval between songs indicates music data up to a predetermined amount at the head of the N-th track and also at the end of the N-th track, and data between them is inter-song data. In addition, the data amount of the inter-song data is an amount that is stored to the end of a block which is the minimum recording unit of the HDD 10 when compressed.

The compression / expansion DSP 6 (control unit) compresses and converts the demodulated and error-corrected data supplied from the servo control circuit 4 into data compliant with, for example, ATRAC3 standards and the like. Storage unit) and expands the playback signal (compressed data) read from the HDD 10.

The digital music data output from the compression / decompression DSP 6 is written into the buffer memory 8. Then, the music data read from the notifier memory 8 is supplied to the DZA converter 12 under the control of the system controller 7 (control unit), and is supplied as analog music data to the speaker via the amplifier circuit (AMP) 16. It is supplied to 17 and output.

The data transfer between the HDD 10 and the buffer memory 8, the data transfer between the compression / expansion DSP 6 and the buffer memory 8, and the reproduction operation of the CD 1 are controlled by the system controller 7. The system controller 7 has a CPU as a control center, includes a program memory, a data memory, an input / output port, and a counter for counting data recording time in the HDD 10, and operates between the HDD 10 and the buffer memory 8 according to a program recorded in the program memory. Data transfer control, compression / expansion Data transfer between DSP 6 and buffer memory 8 is controlled. Also, operations such as playback start / end, track access, fast forward playback, fast reverse playback, and program playback are realized by the system controller 7 controlling the compression / expansion DSP 6 and the pickup 2.

[0038] The operation unit 13 also has, for example, an LCD display and an operation key force. The operation section 13 is assigned keys for the user to perform various operations. For example, there are a play key, a track access key, a stop key, and the like. There are also provided keys for selecting CDs to be played on multiple CDs, and operation keys for program playback and random playback. The LCD display has various keys that are processed by the system controller 7 in conjunction with these keys. Information is displayed, and the operation unit 13 functions as a man-machine interface.

Next, the operation of the information recording / reproducing device 100 of the present embodiment will be described.

FIG. 4 is a flowchart for explaining an operation for storing inter-song data in the information recording / reproducing apparatus 100 of the present embodiment.

When the power of the information recording / reproducing apparatus 100 is turned on and the CD1 is inserted (step S1), the system controller 7 acquires the TOC from the CD1 (step S2) and starts searching the CDDB (step S3). The CDDB is a database in which information such as player information and track titles of the CD is recorded, and may be stored in the HDD 10 in the information recording / reproducing device 100, or by communication control means (not shown). An external server or the like connected by wire or wireless may be used.

On the other hand, the system controller 7 executes a process (from step S 7 to step S 10) for storing inter-track data of all tracks simultaneously with the search of the CDDB. First, the subcode Q is obtained from the CD1 power, the music data at the end of the N-1 track is reproduced (step S7), and the storage of inter-song data is started (step S8). When the head position of the N track also detects the reproduction position of a predetermined amount of music data (step S9), the storage of the inter-song data ends (step S10). Then, it is determined whether or not the storage of the inter-song data in the last track is completed (step S6). If the inter-song data in the music data of the last track and the music data of the previous track recorded on CD1 has been saved (step S6: NO), steps S7 to S7 are repeated until the saving is completed. Repeat S10 to save inter-track data for all tracks.

When the search of the CDDB is completed (step S4), a playlist is created on the HDD 10 based on the search result of the CDDB. Then, the playlist and the inter-song data for all tracks are linked and stored in the HDD 10 (step S5). This playlist is a list to which title information, artist information, and the like are added to a track number for which TOC power can also be obtained. Save to For example, when the inter-song data of the N-1 track and the N track and the elapsed time information of the subcode Q are stored in association with each other, the elapsed time information of the beginning and end of the inter-song data for the track number N, That is, the data indicating the reproduction position at the start of the inter-song data and the data at the end Data indicating the playback position and inter-song data are stored.

FIG. 5 is a flowchart for explaining a recording operation in the information recording / reproducing apparatus 100 of the present embodiment. Here, an example in which N-track music data is recorded on the HDD 10 in a state where the N-1 track music data has been recorded on the HDD 10 first will be described.

[0045] When the user selects music data (N-track music data) to be recorded on the CD 1 via the operation unit 13 (step S21), the system controller 7 sets the music data before the selected N-track. (N-1 track music data) The near-end force also starts playing CD1 (step S22). The position near the end can be recognized by referring to the elapsed time information of the sub court Q stored in the HDD 10. In other words, by referring to the elapsed time information at the beginning of the inter-song data at the selected track address N, it is possible to recognize the playback position near the end of the N-1 track, and position the pickup at that position. Can be attached.

[0046] The system controller 7 compares the elapsed time information of the end of the inter-song data for the track number N stored in the HDD 10 with the elapsed time information of the music data being reproduced from the CD 1 (step S23). Recording of the music data from CD1 to the HDD 10 is also started with the playback position force whose time information matches (step S24).

FIG. 6 shows the data structure of the CD 1 and the FILE created in the HDD 10 in the information recording / reproducing apparatus 100 of the present embodiment. The upper half is CD 1 music data (Track n-1 music data, Track n music data), and the lower half is compressed music data stored in FILE (hereinafter referred to as compressed data). , (Track n-1 compressed data, Track n compressed data). The information recording / reproducing apparatus 100 of the present embodiment records the music data of a certain track recorded on the CD 1 and the music data to be reproduced next to the music data in the HDD 10 in random order even if the music data is recorded in the HDD 10 in random order. When playing back compressed data, make sure that playback sounds do not overlap at the boundaries of the music data in those tracks. An embodiment for achieving this will be described below.

Example 1

FIG. 7A shows an inter-song data acquisition diagram in the case of realizing using inter-song data. this In the method, the inter-song data of the music data of Track n of CD1 is obtained at the same time, the data indicating the reproduction position of the start end and the reproduction position of the end of the inter-music data are obtained, and the data is obtained as Track n. It is stored in the HDD 10 in association with it.

[0049] Here, the last block a of the compressed data of Track n-1 previously stored in the HDD 10 includes music data at the end of Track n-1 of CD1 and a predetermined amount of music data at the beginning of Track n. It is recorded. That is, when the music data of Track n-1 has been recorded, the recording operation has been completed in a state where the music data at the beginning of Track n is stored in the remaining portion of the last block a.

FIG. 7B is an explanatory diagram of a structure in a case where music data of Track n selected at an arbitrary timing is recorded in the HDD 10.

In the present embodiment, at the time of recording, the power CD1 near the end of Track n-1 is reproduced, and the data indicating the reproduction position of the end of the inter-song data corresponding to the stored Track n is reproduced. When the data indicating the playback position of the music data of Track n is matched, the recording of the music data of Track n to the HDD 10 is started, thereby realizing that the music can be played in a connected state without duplication.

[0052] According to the present embodiment, data near the space between tracks between Track n-1 and Track n is read, and Track n, Track n-1 and Track n are referred to by referring to the data near the space between songs. Since it is stored in HD DIO so that it can be played continuously, for example, even when recording a non-stop CD, it is not necessary to record the first song in order. Yes, you can connect between songs during playback

Example 2

FIG. 8A is an explanatory diagram of a structure for storing a counter value in the case of using a counter.

In the present embodiment, a music piece is connected by using a counter mounted in the system controller 7. If a counter is used, there is no need to acquire inter-song data as pre-processing for recording to HDD10.If Track n-1 and Track n are connected instead, CD 1 At the time of recording n_l, a connection counter value is acquired in advance.

[0055] To be more specific, first, when recording Track n-1 from CD1 to HDD10, the interval between songs is set. The detection device 9 monitors the music data read from the CD playback block 14 to the HDD 10 and detects the delimiter position between Track n-1 and Track n of the data read from CD1. When the inter-song detection device 9 detects the break position between Track n-1 and Track n while recording to HDD 10, the system controller records the first data of Track n of CD1 to HDD 10, 7 starts counting by the counter. Then, the system controller 7 refers to the last block in the compressed data of the HDD 10 in which the data at the end of the last frame of Track n_l is recorded, and the end of Track n-1 of CD 1 in the last block. The counter counts from the recorded position until the unrecorded part of the last block is completely recorded by the first data of Track n. Then, when all the last blocks of Track n-1 have been recorded, the recording of Track n_l ends. Thus, in the last block of Track n-1, data of the last frame of Track n-1 is recorded in the first half, and data of the first frame of Track n is recorded in the second half.

At the time of recording Track n, the system controller 7 starts reproduction of CD1 from near the end of Track n-1, and starts a counter again from between Track n-1 and Track n. Let it. Then, as shown in FIG. 8 (b), the system controller 7 refers to the value of the counter recorded in advance when recording Track n-1, and compares the value of the previously recorded counter with the value of the counter currently being counted. Recording of data from CD1 to HDD10 is performed from the point when the data is updated. That is, in this embodiment, the first frame of Track n of CD1 is recorded in the last block of the data of Track n-1 previously recorded on the HDD 10, and the data length of Track n recorded in this last block (Recording time) is grasped by the counter, and the recording start of Track n of CD1 is delayed by the counter by the data length, and the end of Track n-1 of CD1 and the track n-1 of HDD 10 are delayed. By adjusting the length of the time lag at the end of the track, sound skipping and duplication are avoided when recording Track n-1.

According to the information recording / reproducing method of this embodiment, a count value corresponding to the time from the separation of Track n_l and Track n in CD1 to the end of Track n_l in HDD 10 is obtained, and the count value is obtained. For reference, Track n and Track n-1 and Track n are stored on the HD D10 so that they can be played continuously, so even when recording a non-stop CD, record the first song in order. Audio data can be recorded continuously regardless of the order in which the songs need to be played, and audio can be connected during playback.

[0058] The information recording / reproducing apparatus 10 of the present embodiment is not limited to the power described in the example of recording on a CD-powered HDD. This is applicable when recording from a disk or another recording medium such as an MD to various recording media such as an HDD. Further, the present invention is applicable not only to recording music data but also to recording other content information such as moving image data.

In the present embodiment, the information recording / reproducing device 10 has been described as an example. However, an information recording program for operating the information recording / reproducing device 10 based on the above-described method is provided by the information recording / reproducing device. The above operation may be performed by incorporating it into 10.

[0060] This application is based on Japanese Patent Application (No. 2004-150209) filed on May 20, 2004, the contents of which are incorporated herein by reference.

Claims

The scope of the claims

[1] an information recording medium on which a plurality of pieces of content information are recorded;

An information recording / reproducing apparatus comprising: recording means for recording the content information reproduced by the reproducing means; and control means for controlling the reproducing means and the recording means.

¾ 【こ; i l / 、、

The control means causes the recording means to record data indicating an end position in a predetermined amount of information from the head of one piece of content information in correspondence with the one piece of content information, and arbitrarily selects the content information. When recording the selected content information, when the data corresponding to the selected content information and the data indicating the reproduction position of the selected content information match, An information recording / reproducing apparatus characterized by starting recording on a device.

2. The information recording / reproducing apparatus according to claim 1, wherein the end position in the predetermined amount of information is an end position of a minimum recording unit of the content information in the recording unit.

[3] a counter for calculating a count value corresponding to a time from a head of the one piece of content information to an end position in the predetermined amount of information,

The control unit acquires the count value calculated by the counter, records the count value in the recording unit corresponding to the one piece of content information, and stores the arbitrarily selected content information in the recording unit. The method according to claim 1 or 2, wherein when the count value calculated by the counter and the acquired count value match, recording of the selected content information in the recording means is started. Information recording / reproducing device described in

[4] An information recording medium on which a plurality of pieces of content information are recorded Plays back one piece of content information and indicates an end position in a predetermined amount of information from the head of the one piece of content information. Recording the data corresponding to the one content information;

Playing arbitrarily selected content information;

Judging whether or not the data indicating the reproduction position of the reproduced content information matches the data corresponding to the selected content information;

Starting recording of the selected content information when it is determined that they match,

An information recording method comprising: An information recording program for causing a computer to execute the information recording method according to claim 4.