JP2002112201A - Information reproduction method and reproduction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information reproduction device that allows users to utilize a reproduction resume function by which reproduction can again be started from an intermitted part of disk reproduction. SOLUTION: When an entry section 11a enters an instruction to stop reproduction while a storage section M1 as an information storage medium such as an optical disk is reproduced, a recording position of data reproduced at that point of time in the storage section M1 is stored by each title as resume information. When the entry section 11a enters information to identify a title and an instruction of reproduction start and the resume information of the title is stored, a control section 30a controls a reproduction means to start the reproduction according to the resume information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording / reproducing apparatus for recording / reproducing information on / from an information storage medium, and more particularly, to a method in which reproduction is stopped halfway during the reproduction of information and is started again later. The present invention relates to an information reproducing method for reproducing from a position where is stopped halfway, and an information reproducing apparatus to which the method is applied.

[0002]

2. Description of the Related Art In recent years, there has been developed an optical disk reproducing apparatus for a moving image which reproduces an optical disk on which data such as video and audio data is recorded. This device is, for example, an LD or a video C
Like a D playback device, it is generally used for watching movie software and enjoying karaoke.

[0003] Among them, currently, MPEG standardized internationally
2 (Moving Image Coding Expert Group) method and AC3 audio compression method
The VD standard has been proposed.

This standard supports the MPEG2 system as a moving image compression system according to the MPEG2 system layer,
AC3 audio compression and MPEG for audio compression
Supports audio compression. Further, it is possible to handle sub-picture data in which bitmap data is run-length-compressed for subtitles such as movies and karaoke. Further, according to this standard, control data (navi pack) for special reproduction such as fast forward and reverse is added in relation to a reproduction apparatus.

[0005] Furthermore, in this standard, IS096 is required so that data on a disk can be read by a computer.
60 and micro UDF standards.

[0006] The standard of the media itself is DVD.
-Following the DVD-ROM standard, which is a video medium, the DVD-RAM standard (4.7 GB) has been completed.
VD-RAM drives are also used as computer peripherals.
It is beginning to spread.

Further, at present, a DVD-Video standard for realizing a system capable of recording and reproducing information in real time using a DVD-RAM, that is, RTR (Real Time
Recording)-DVD standards have also been developed, and products conforming to the standards are on the market.

This standard conforms to the DVD-
It is based on video standards. In addition, the RT
A file system compatible with R-DVD is also currently standardized.

Normally, a playback-only DVD video player has a continuous playback function that can temporarily stop playback during playback and then continue playback from the point where the playback was interrupted. More specifically, when the reproduction of the inserted disc is interrupted on the way, the continuous reproduction function stores the interruption information of the part which has been reproduced so far in the RAM in the player, By accessing the interruption information and, for example, pressing a continuous playback key, the data at the previously played back location is read from the memory, and then the playback is resumed from the continuation of the playback.

Furthermore, in the case of a reproducing apparatus capable of recording and reproducing data on and from a disk, when the reproduction is interrupted, reproduction interruption information for resuming the next reproduction is recorded on the disk. There has been developed a playback apparatus having a continuous playback function that can play back a video from an interrupted location with reference to interrupt information.

[0011]

In the case where a plurality of persons individually perform scheduled recording on a single disc, interrupt playback during viewing of the recorded program (program), and watch the continuation later. However, the continuous playback function as described above can be used only by one user. This is because the conventional reproduction interruption information can be recorded only at one location on the disc.

Accordingly, an object of the present invention is to provide an information reproducing apparatus in which a plurality of users can use the reproduction restart function as described above.

Another object of the present invention is to provide an information reproducing apparatus capable of resuming reproduction for each program recorded on a disk.

[0014]

In order to achieve the above object, a playback apparatus of the present invention holds the state at the last stop of playback for each recorded program (hereinafter, referred to as a title). When a title is played,
The reproduction is started by returning the held state.

That is, the information reproducing apparatus of the present invention comprises: reproducing means for reproducing an information storage medium on which a plurality of titles are recorded;
An instruction to start and stop playback to the playback means,
And input means for inputting information for specifying a title to be reproduced, and when an instruction to stop the reproduction is input by the input means during reproduction of the information storage medium, the reproduction is performed at that time. Holding means for holding, for each title, a recording position of the data on the information storage medium as resume information, information for specifying the title and an instruction to start reproduction by the input means, and further for the title, When the resume information is held, a control means is provided for controlling the reproducing means so as to start reproduction in accordance with the resume information.

[0016] For reproduction data including a plurality of audio streams, an audio stream number is also held. In a playback system that handles a playback data format that supports dual mono, the main / sub status is also maintained.

The resume information is retained until the power is turned off or until the disk is removed. The resume information is retained only when the title is specified and the reproduction is performed. in this case,
It is not retained during playback of a program set (Program_Set: PG_SET). Alternatively, when the reproduction is interrupted other than the reproduction by the designation of the title, the resume information of the title may be updated.

The resume information is stored on the same medium as the video data, or is held together with the ID of the exchangeable medium in a storage unit in the playback system. As a result, the resume information is retained even after the disk is removed or the power is turned off.

By preparing a plurality of reproduction start procedures, reproduction based on resume information and reproduction from the title or the head of the disc can be selected. Further, this resume function can be selected prior to reproduction. Alternatively, valid / invalid may be designated as the initial setting of the device.

At the time of reproduction using this resume function, the user is notified of the fact. If the medium is write-protected and resume information is recorded on the medium, the resume information is not used. In the normal reproduction after Skip / FF / Rew / Slow, the resume information is updated only when the reproduction is stopped for a certain period of time or more. Further, the resume can be erased. Explicitly, this erasure is performed by a Graphic User Interface (GU).
I) and the like. Also, this resume information is
It may be erased by the number of times (different key operation) or erased when it is reproduced to the end.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an information recording / reproducing apparatus to which the present invention is applied. The information recording / reproducing apparatus includes a hard disk drive (HDD) 20 and an optical disk 1 as an information storage medium capable of constructing a video file.
The disk drive 35 that rotates and drives the optical disk 10 to read and write information on the optical disk 10, an encoder unit 50 that constitutes a recording side, a decoder unit 60 that constitutes a reproduction side, and controls the operation of the apparatus main body. The microcomputer block 30 is a main component.

The encoder unit 50 includes an ADC (analog-to-digital converter) 52, a V (video) encoder,
An encoder group 53 including an A (audio) encoder, an SP (sub-picture) encoder, a formatter 56 for converting the output of each encoder into a predetermined format, and a buffer memory 57 are provided.

The ADC 52 has an external analog video signal from the AV input section 42 + an external analog audio signal,
Alternatively, an analog TV signal + analog audio signal from a TV (television) tuner 44 is input.

Under the control of the microcomputer block 30, the data processor 36 supplies the DVD recording data output from the encoder unit 50 to the disk drive 35, or the DV reproduced from the optical disk 10.
Fetches the D playback signal from the disk drive 35,
Rewriting the management information recorded on the optical disc 10,
For example, the data recorded on the optical disk 10 is deleted.

The microcomputer block 30 includes M
PU (microprocessing unit) or CPU
(Central processing unit), a ROM in which a control program and the like are written, and a RAM for providing a work area necessary for executing the program.

The MP of the microcomputer block 30
U uses the RAM as a work area to execute defect location detection, unrecorded area detection, recording information recording position setting, UDF recording, AV address setting, etc., according to the control program stored in the ROM.

The decoder section 60 separates each pack from video information having a pack structure and extracts the pack.
A memory 63 used for performing pack separation and other signal processing; a V decoder for decoding main video data separated by the separator 62; an SP decoder for decoding sub video data separated by the separator 62; A decoder group 64 by an A decoder that decodes the audio data separated by 62 and sub video data obtained from the SP decoder are appropriately combined with main video data obtained from the V decoder, and menus, subtitles, and other sub video data are combined with the main video. And a video processor 66 for outputting the superimposed data.

When the output of the A decoder is digitally output, it is output to the outside via an interface (I / F) 75, and when it is output as analog, it is converted to analog by a DAC 77 via a selector 76 and output to the outside. . The selector 76 selects and outputs one of a signal input from the TV tuner 44 and the A / V input unit 42 via the ADC 52 and a signal input from the decoder group 64 according to a select signal from the microcomputer block 30. . The analog audio signal is supplied to an external component (not shown) (a multi-channel stereo device having two to six channels).

The key input unit 11 reproduces (PLAY), stops (STOP), records (REC), skips (Ski)
p), fast forward (FF), reverse forward (Rew), slow (S
low), and the user can operate the recording / reproducing apparatus by pressing this button.

FIG. 2 shows a directory structure of video and audio files of a real-time recording (RTR) DVD as an example of a DVD disk applied to the recording / reproducing apparatus shown in FIG.

In the DVD, directories exist for each standard, and these directory names are referred to as "DVD_RTR" in the case of RTR-DVD, and "DVD_RTR" in the case of DVD-Audio.
“AUDIO_TS” and “VI
DEO_TS ". In FIG. 2, "DVD_RT
R "and" AUDIO_TS "are shown. Recorded data exists in each directory.

In a DVD, data is stored in a normal file format. The title corresponds to, for example, one movie, and a plurality of titles can be recorded on one disc. A collection of titles is called a title set (VTS), and the title set is composed of a plurality of files.

The directory "DVD_RTR" contains a VR as a video manager (VMG) file.
_MANEGER. I / O, VR_MOVIE. VR_STILL.VRO as a still picture video file. VRO, VR_AUD as a still picture audio file
IO. VRO, VR_MANAGR. Each file of BUP exists.

VR_MANEGER. In the IFO file, navigation data is recorded. The navigation data is data for advancing a program set, a program, an entry point, a playlist, and the like.

VR_MOVIE. The VRO file is a so-called movie AV file for recording a movie video object (movie VOB).

VR_STILL. VRO is a still picture AV file for recording a still picture VOB. This VR_STILL. VRO is used to record an original VOB composed of a video part including an arbitrary sub-picture unit. At this time, the audio part related to the video part is also included in the original VOB.

VR_AUDIO. VRO is a still picture additional audio file for recording an additional audio stream for a still picture.
This additional audio part indicates an audio stream recorded by after recording. VR_
AUDIO. The audio part recorded in VRO is
VR_STILL. Used in combination with several video parts recorded in VRO.

FIG. 3 shows the VR_MOVIE. VR_STILL. As VRO and still picture video file 2 shows the file structure of VRO.

A video file has a hierarchical structure, one file is composed of a plurality of VOBs (video objects), one VOB is composed of a plurality of VOBUs (video object units), and one VOBU is composed of a plurality of packs. Is done. The plurality of packs include an RDI pack, a V pack, an A pack, and the like.

The V-pack is obtained by compressing video data according to the MPEG2 system, and includes a pack header, a packet header, and a video data part. The A-pack is used for audio data such as linear PCM or MPEG,
Alternatively, it is processed by a method such as AC3, and includes a pack header, a packet header, and an audio data part.

In the pack, a PT indicating a reproduction time is appropriately set.
A time stamp such as S (presentation time stamp) or DTS (decoding time stamp) indicating a decoding time is described. For the PTS of the sub-picture, a time arbitrarily delayed from the PTS of the main picture data or audio data in the same reproduction time zone can be described.

The order of reproducing data recorded in the video file is defined by a program chain (PGC). This program chain (PGC) includes cells (Ce
ll) is defined, and a VOB to be reproduced is defined in the cell. The part where the specific information of the PGC is recorded is the program chain information (PGCI) part in the VMG file. PGCI has 2
There are types and one is the original PGCI (ORG_P
GCI) and the other is a user-defined PGC table (UD
_PGCIT).

Here, the configuration of the video manager file (VMG) in which the above-mentioned program chain information is described will be described.

FIG. 4 shows the information described in the VMG file in a hierarchical manner, and in particular, the program chain information (PG
CI) is shown in hierarchical detail.

In the VMG file, RTR_VMGI
(RTR video manager information), M_AVFIT
(Movie AV file information table), S_AVFI
T (still picture AV file information table), O
RG_PGCI (original program chain information), UD_PGCIT (user-defined program chain information), TXTDT_MG (text data manager), MNFIT (manufacture information table)
There is.

RTR_VMGI (RTR video manager information) is a video manager information management table (V
MGI_MAT) and a playlist search pointer table (PL_SRPT).

The playlist search pointer table indicates information necessary for searching and accessing a playlist in the RTR disc. PL_SRP
T starts with PL_SRPT information (PL_SRPTI), followed by a playlist search pointer (PL_SRPTI).
SRPs) are described. Each playlist consists of a user-defined PGC. Therefore, PL_SRP has a PGC number corresponding to the play list. Playlists are distinguished by a unique number related to the playlist, that is, a playlist number (PLN). This PLN is allocated to all playlists in the order from PL_SRP “1” to “99” in PL_SRPT. The user can distinguish one playlist from its PLN.
The playlist number is the same as the user-defined PGC number.

ORG_PGCI (original program chain information) is a special PGC for reproducing data in the recording order. That is, the original PGC is information for designating the order of data reproduction, and the program (P
G) Program set (PG_SE)
T). Here, the program is a logical unit of the recorded content defined by the user, and one program in the program set includes one or more original cells. This program set is data stored in the VRO file. The number assigned to each program in the original program chain is called a program number (PGN).
1 ”to“ 99. ”The program number (PGCN) is included in the user-defined program chain (PGC).
Are assigned. “0” is added to the original program chain as a special PGCN.

UD_PGCIT (user-defined program chain information) also specifies the order of data reproduction, and the user specifies a part of the program specified by ORG_PGCI by editing the program and connects the parts. ing. Therefore, UD_P
The GCIT indicates a cell connection, not a set of program connections. The cell is information indicating each part of the program. The cells in the program chain are numbered consecutively, and this number is assigned to the cell number (C
N).

ORG_PGCI (original program chain information) and UD_PGCIT (user-defined program chain information) have similar data structures.

[0052] The PGCI contains PGC general information (PGC_G
I), a PGC information table (PGCIT), a cell information search pointer (CI_SRPT), and a cell information table (CIT).

The PGC general information (PGC_GI) describes the number of programs and the number of cell search pointers in the PGC.

In the PGC information table (PGCIT),
Program information (PGI) is described, and a program type (PG_TY) indicating whether or not the program is in an erase protected state, the number of cells in the program (C_Ns), and primary text information indicating a character set (PRM_TEXTI), item text search pointer number (IT_TXT_SRPN) corresponding to this program, cell number, and representative image information (REP_PICTI) indicating a picture point.

Cell information search pointer (CI_SRP)
In T), the start address of the cell information (CI) is described. Cell information (CI # 1 to CI # j) specified by the search pointer is described in the cell information table CIT. Cell information (CI) includes cell general information (C_G).
I), cell entry point information (C_EPI # 1-
C_EPI # k) is described.

Next, a reproducing method and a reproducing apparatus according to the present invention will be described.

In the recording method in the RTR, a plurality of programs (PG) and playlists (P
L) can be recorded. When a user makes a scheduled recording of a plurality of programs, the user can record each recorded content as a separate program.

In the case where a plurality of persons individually perform scheduled recording on one disc for viewing, the reproduction is interrupted during the viewing, and in consideration of the situation where the continuation is watched later, the reproduction is performed for each program. If the interrupted position or the like is held and the reproduction of the program is designated and the reproduction can be automatically resumed (resume) from the position where the reproduction is stopped, user convenience can be improved. . Less than,
The above programs and playlists are called titles.

FIG. 5 is a block diagram of the playback system according to the first embodiment of the present invention, in which the parts related to the present invention are extracted and simplified from the recording / playback system shown in FIG. The playback system according to this embodiment holds resume information on the same storage medium as the storage medium M1 on which video and audio data are recorded.

The reproducing system includes an input section 11a for detecting a reproduction instruction from a user and a key input of a title number to be reproduced, a storage section M1 for storing recorded data and resume information, and a recorded data stored in the storage section M1. And a control unit 30a for controlling the present reproduction system. HDD2 of FIG. 1 as storage medium M1
0 or the data can be recorded and reproduced using the DVD-RAM 10 or the like. The reproduction section 60a includes a decoder section 60, a disk drive 35, a data processor 36, and the like.
In the storage unit M1, an area for storing the resume information for each title is provided in addition to an area for holding the recording data. FIG. 6 shows an example of a table in which resume information is stored.

As the resume information, for example, the aforementioned program chain number (PGCN), program number (PGN), and cell number (CN) can be held. In this case, a presentation time stamp (PTM) or a picture point (PICT_PT) indicating the reproduction timing is also held. Others
A method of adding an audio stream number at the time of stopping the reproduction or a reproduction channel in dual mono is conceivable. The dual mono indicates a mode in which voice such as narration is recorded as main / sub sound in two languages, and either main / sub is selected during reproduction and reproduced. Furthermore, by describing a special code, for example, a large value that is impossible as a value in the PGCN part, in the resume information part, it is possible to detect that the resume information corresponding to the title is not held. .

Next, the operation of the apparatus shown in FIG. 5 will be described with reference to the flowcharts shown in FIGS. When the user instructs the system to play back, the user refers to a title list indicating a plurality of recorded programs displayed on the screen, and the user selects one.
One title can be selected by selecting one title or directly pressing a numeric key provided on the input unit 11a.

First, in step S101, the control unit 30
a checks the user's key input using the input unit 11a,
If there is, the process proceeds to S102. In step S102, it is checked whether or not a reproduction start instruction has been given from the input information. If reproduction has not been instructed, it is determined whether or not a title has been selected (step S103). If a title has been selected, the title number is reproduced next. The number of the title to be held is stored (step S105).

In step S102, if reproduction is instructed, it is determined whether or not the title is already stored (step S106). If not, reproduction is started from the beginning of the first title of the recorded data. Get ready. That is, if the storage unit M1 is an optical disk, preparation is made to start reproduction from the head of the disk.

If the title is held in step S106 (in the case of Y), the process moves to step S107, and resume information is obtained. In this step S107,
Data of a portion corresponding to the selected title to be reproduced in the resume information storage area of the storage unit M1 is obtained.

In step S108, step S107
The data acquired in the step is inspected. If the resume information has been written, the process proceeds to S110, and if the resume information is invalid, the process proceeds to S1.
Move to 09. In step S109, the playback unit 60a is operated so that the next playback starts from the beginning of the title corresponding to the title number input from the input unit 11a.
After that, it moves to step S111. In step S110, the reproduction unit 60a is operated so that the next reproduction starts from a location corresponding to the position information in the obtained resume information, and the process proceeds to step S111. If the title being played at this time is selected by the user using the list of titles displayed on the screen, the resume information is valid. If the title is selected by the direct key, the resume is performed. The information may be invalidated. Further, when a stop instruction is input during the reproduction of the write-protected medium and there is resume information on the medium, the resume information cannot be changed, so that the resume information is not used.

In step S111, the reproducing unit 60a executes step S1 based on the recorded data stored in the storage unit M1.
09, a position on the recording data corresponding to the specified position of the title set in S110 is calculated, and reproduction is started from the data at that position. Then, step S1 in FIG.
Move on to 21. When the reproduction is started from the resume position, the fact may be notified to the user.

The playback unit 60a, based on the recorded data in the storage unit M1, performs the following operations unless a stop instruction is given from the control unit 30a.
Continue playing until the end of the title. Step S12
In step 1, the reproducing unit 60a is inspected. If the reproduction has already been completed up to the end of the title, the process proceeds to step S128, and if not, the process proceeds to step S122. In step S128, the resume information of the portion corresponding to the reproduced title in the resume information storage area of the storage unit M1 is invalidated, and the operation ends.

In step S122, the key input state of the user is obtained from the input unit 11a, and the flow advances to step S124. In step S124, the key input state is checked, and if a stop is instructed, the process proceeds to step S126; otherwise, the process proceeds to step S125 to perform a process corresponding to the input.

In step S126, the reproducing section 60a is operated to stop the reproducing operation, and the process proceeds to step S116.
In step S127, the stop position is acquired from the playback unit 60a, and the stop position information is held in the resume information of the portion corresponding to the title being played in the resume information storage area of the storage unit M1, and the operation is performed. Stop.
At this time, an audio stream number is also held for reproduction data including a plurality of audio streams. Further, in a playback system that handles a playback data format that supports dual mono, the main / sub status is also maintained.

Furthermore, the resume may be held only when the title is specified and the reproduction is started.
In this case, the program set (PG_SET) is not retained when the original program chain is reproduced. Alternatively, when a stop is instructed other than reproduction by title designation, the resume state may be updated for the title being reproduced. Also, Skip / FF / Rew / Sl
The resume update is not performed for the stop instruction during the reproduction after the ow operation, and the resume update is valid only when the stop instruction is issued after the reproduction has been performed for a certain period of time or more. Further, whether or not to enable the resume function for starting playback from the resume position may be set at the start of playback or as an initial setting of the apparatus.

FIG. 9 is a block diagram showing a configuration of a reproduction system according to the second embodiment of the present invention. This playback system holds resume information in a storage medium (resume storage unit M3) different from a storage medium (recording storage unit M2) in which recorded data is stored. With this configuration, the resume information for each title is retained even when the format of the recording storage unit supports recording of recorded data only or when writing is not possible (write-protected, ROM medium). It is possible to keep. FIG. 10 shows an example of a table in which the resume information is stored.

The function of each component in FIG. 9 is almost the same as that in FIG. 5, but when the storage medium corresponding to the recording storage unit M2 is a replaceable medium such as DVD-ROM or DVD-RAM, The resume information stored in the resume storage unit M3 is stored in the exchangeable storage medium M2.
D and each title number.

The operation of the configuration of FIG. 9 is almost the same as that described with reference to the flowcharts of FIGS. 7 and 8 based on the configuration of FIG. 5, and therefore only the differences will be described. That is, in the acquisition of the resume information in step S107, the ID of the storage medium loaded as the recording storage unit M2 is acquired via the reproduction unit 60b, and the corresponding resume from the resume storage unit M3 based on the ID and the title number. Get information. In step S128, the I
The resume information at the position corresponding to D and the title number is invalidated. In step S127, the stopped position information is stored at a position corresponding to the ID and the title number of the storage medium.

[0075]

As described above, according to the present invention, a plurality of users can use the reproduction restart function of interrupting the reproduction of a disc and restarting the reproduction from the interrupted point later. Further, according to the present invention, it is possible to restart the reproduction for each program recorded on the disk.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an information recording / reproducing apparatus to which the present invention is applied.

FIG. 2 shows a directory structure of video and audio files of a real-time recording DVD.

FIG. 3 shows VR_MOV as a movie video file
IE. VR_STILL. As VRO and still picture video file 5 shows the file structure of VRO.

FIG. 4 hierarchically shows information described in a VMG file, particularly program chain information (PGCI).

FIG. 5 is a block diagram showing a configuration of a reproduction system according to the first embodiment of the present invention.

FIG. 6 shows an example of a table in which resume information is stored.

FIG. 7 is a flowchart showing an operation in the apparatus of FIG. 5;

FIG. 8 is a flowchart showing the operation of the apparatus shown in FIG. 5;

FIG. 9 is a block diagram showing a configuration of a playback system according to a second embodiment of the present invention.

FIG. 10 shows another example of a table in which resume information is stored.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kazuya Fujita 70 Yanagimachi, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture F-term (reference) 5C052 AA04 AC10 CC11 CC20 5C053 FA24 FA30 HA01 HA21 HA33 JA30 5D044 AB05 AB07 BC02 CC06 DE29 DE40 EF05 FG18 FG23 GK12 HH02 5D077 AA23 BA30 CA02 CB12 DC04 DD11 DF03 EA11 EA32 HB01

Claims (4)

[Claims] 1. A reproducing means for reproducing an information storage medium on which a plurality of titles are recorded, instructions for starting and stopping reproduction for the reproducing means,
And input means for inputting information for specifying a title to be reproduced; and, if the instruction to stop the reproduction is input by the input means during reproduction of the information storage medium, the reproduction is performed at that time. Holding means for holding the recording position of the data on the information storage medium as resume information for each title; and information for specifying the title and an instruction to start reproduction are input by the input means. An information reproducing apparatus, comprising: control means for controlling the reproducing means so as to start reproduction according to the resume information when the resume information is held. 2. The information reproducing apparatus according to claim 1, wherein said holding means records said resume information on said information storage medium on which said plurality of titles are recorded. 3. The information reproducing apparatus according to claim 1, wherein said holding means records said resume information in a storage section provided in said reproducing apparatus together with ID information of said information storage medium. 4. A step of reproducing an information storage medium on which a plurality of titles are recorded, instructions to start and stop reproduction of information stored in the information storage medium, and information for specifying a title to be reproduced. Inputting, and when an instruction to stop reproduction is input during reproduction of the information storage medium, the recording position of the data reproduced at that time on the information storage medium is set as resume information, and And when the information for specifying the title and the instruction to start reproduction are input, and when the resume information is held for the title, the step of starting reproduction in accordance with the resume information. Characteristic information reproducing device.