Playback device and method. RU patent 2511034.

FIELD: physics, computer engineering.

SUBSTANCE: invention discloses a playback device and method. The device comprises a plurality of means. A playback means plays back a removable data medium on which a video image is stored in one file. A storage control means stores the size of the file of the data medium, the names of all files and the absolute address corresponding to the video content when playback of video content on the removable data medium stops and when the data medium is removed. A determining means determines, when the data medium is reloaded and video content is played back by the playback means, if the data medium is identical to the removed data medium by reading the size of the file and names of all files stored in the storage medium. The control means continues to process playback of video content based on the absolute address stored in the storage means when the determining means determines that the data medium is identical to the removed data medium.

EFFECT: continuing video playback without performing fast rewind.

10 cl, 9 dwg

The technical field to which the invention relates

The present invention relates to a device play and how to play, and can be applied, for example, MPEG-4 (Moving Picture Experts Group) car DVD (Digital Versatile Disk) player.

The level of technology

At this level of technology, DVD player has what is called a continuation function to resume playback of a DVD disk from the scene shown directly before removing the DVD drive, if the drive was once extracted during playback, and then loaded into the DVD the player.

This function can be completed successfully, because in the case of a DVD disc different types of information, such as a disk ID (ID) to identify the disc, the title number and track number, with which you can control the playback time, and playback time, kept in accordance with the format of the disk.

Thus, when the DVD player once extracts DVD disc during playback, DVD player stores different types of information, such as a disk ID, title, track number and playback time.

Then, when a DVD disc is loaded in DVD player, DVD player determines whether or not the DVD previously extracted DVD disk by reading a disk ID, and then continues playback of the scene that is displayed directly before removing, based on a previously saved a disk ID, title, non track and playback time (for example, see L1 and PTL2).

The list of reference documents

L1: Publication of the Japanese patent application №2006-217126

PTL2: Publication of the Japanese patent application №2007-180938

Summary of the invention

At the moment, DVD player cannot identify such drives, such as CD-R (Compact Disk-Recordable), DVD-R (Digital Versatile Disk-Recordable) and DVD-RW (Digital Versatile Disk-ReWriteable), because the file to MPEG4 video, corresponding file formats video DivX or MPEG-4 AVC (Moving Picture Experts Group phase 4 Advanced Video Coding)", recorded on these disks, does not have a disk ID.

Moreover, for a file to MPEG4 video there are no concepts of "header" and "head," and he is just one file. In addition, information about playback time is not recorded in the file to MPEG4 video.

Therefore, the problem arises when the disc once extracted when playback is stopped in the middle of the file to MPEG4 video, MPEG 4 compatible DVD player cannot recognize whether the newly loaded in the DVD drive previously extracted disk and from what point to perform reproduction, and therefore may not resume playback from the point where playback was stopped.

The present invention has been made with consideration of the above circumstances and offers a device that can perform the function of continuing to video content that is stored in a single file on removable media.

To perform the above task, under this invention, removable storage media that contains the content of the video image in one file and more content other than the content of the video image, stored and reproduced, and, when the reproduction of the content of the video image in the media stops and media information is retrieved, the file size media, all file names that match the content of video and other content, and absolute address is stored. When the media is loaded again and content of the video is played, if it is determined that the media the information is identical to the extracted media information by reading the file size and the names of all files stored in the storage medium, the content of the video continues on the basis of absolute addresses stored in the storage medium.

As a result, even after stopping playback of the content of the video image on the storage media on which together are stored content of the video image in one file and other content, and media extracted when the media is loaded again and you replay the content of the video, you can to continue playback directly from the point at which playback was stopped.

According to the present invention, even after you stop playback of the content of the video image on the storage media on which together are stored content of the video image in one file and more the content and media extracted when the media is loaded again and you replay the content of the video that you can play directly with the point at which playback was stopped. It makes possible the creation of a playback device and method of reproduction, capable to easily perform a continuation function for video content that is stored in a single file on removable media without the need for user-fast forward.

Brief description of drawings

Figure 1 - schematic block diagram showing the configuration of car DVD player according to the first, second and third variants of implementation.

Figure 2 - schematic diagram illustrating the configuration directory under the first, second and third variants of implementation.

Figure 3 - schematic diagram illustrating the playhead according to the first variant of implementation.

Figure 4 is a block diagram that shows the basic procedure resume playback according to the first variant of implementation.

5 is a table showing the combination of files and their extensions according to the first, second and third variants of implementation.

6 is a schematic diagram illustrating the playhead according to the second variant of implementation.

7 - block diagram showing the procedure continue playing with the temporary address playback according to the second variant of implementation.

Fig - schematic diagram illustrating the playhead according to the third variant of implementation.

Fig.9 - block diagram showing the procedure resume playing from the point located at the specified time before, according to the third variant of implementation.

Detailed description of the invention

The best options for carrying out the invention (hereinafter called variants of implementation) will be described below. The description will be given in the following order:

1. The first implementation

2. The second implementation

3. The third variant of realization

4. Other options for implementation (modified examples)

<1. The first implementation>

[1-1 Configuration car DVD player]

Figure 1 is a reference position 1 designated car DVD player according to the first variant the implementation used in General as domestic automotive device. In car DVD player 1, LCD (liquid crystal display) and the loudspeaker 12 is connected with the main building 2.

This car DVD player 1, microcomputer 7 management system, designed as a CPU (Central processing unit), shall have complete control and performs various functions by loading the main program, or different applications that are stored in ROM (read only Memory Device), etc. in RAM 8 (random access Memory).

In this case, car DVD player 1 accepts commands based operations clicks performed by the user by using multiple keys 10 control provided on the front panel (not shown) main body 2, and displays on the panel display 9, made as FL (Fluorescent light) display different types of information, such as title results playback, and playback time.

When the DVD disc Di1, where, for example, the file is stored with MPEG4 video is loaded into the main body 2, car DVD player reads data disk Di1 laser puller 3, and sends the data S1 playback at MPEG-4 decoder.

MPEG 4 decoder receives the signal S2 and audio S3, exposing data S1 play the decoding process based on MPEG4. Video S2 displayed on the LCD display 11 through output connector KZT1, displaying, thus playing the video.

In addition, MPEG 4 decoder sends audio S3 electronic controller 5 volume. Electronic controller 5 volume adjusts the volume based audio S3 and to send the received audio signal S4 to the amplifier 6 power.

Amplifier 6 power enhances audio S4 up to a specified level and delivers audio S5 resulting from the gain on the loudspeaker 12 through output connector KZT2, the findings, therefore, played a recording.

Moreover, when a disk Di1 is removed from the main body 2 and the next disk Di2 is loaded, car DVD player 1 handles the disc Di2 like to drive Di1.

[1-2. Configuration directory]

Further, with reference to figure 2, describes the configuration of the disk directory Di1 used as the main object of play in this invention.

On the drive Di1, music file And that file to MPEG4 video and music file is stored in the bottom of the hierarchy is the root directory, designated as "Root". When the disk Di1 loaded in car DVD player 1, the music file And that file to MPEG4 video and music file play in this order.

[1-3. The data structure]

Next, a reference to figure 3, we describe the structure of data stored on disk Di1. On the drive Di1, as TC (table of contents), ID (identifier) of a drive to identify the disk and the file size recorded in the region AR1 read from absolute address "LLC" to the absolute address "100".

In addition, the disk Di1, as directory entries, the corresponding table of contents of the disk Di1, all the file names and the range of absolute addresses these files are stored, recorded in the area AR2 directory entry from an absolute address "101" to an absolute address "200".

Moreover, on disk Di1, evidence of the music file And recorded in the range of absolute address "201" on "300" in the field AR3 actual data, the actual data file to MPEG4 video recorded in the range of absolute address "301" "700" and the actual music file is written in the range of absolute address "701" "800".

In this case, when a car DVD player 1 eject Di1 after stopping playback on absolute address "500", corresponding, for example, the point X disk Di1, and disk Di1 is loaded again, car DVD player 1 continues processing playback using the absolute address "500", the corresponding point X as the playhead.

[1-4. The basic procedure continue processing playback]

Further, with reference to the block diagram shown in figure 4, will describe the basic procedure continue processing play where microcomputer 7 management system (hereinafter referred to as microcomputer 7) car DVD player 1 continues processing playback from the point where the disc is Di1 was stopped.

Microcomputer 7 car DVD player 1 begins with the start of operation step RT1, proceeds to step SP1 on which the microcomputer 7 begins processing the disc Di1 and proceeds to the next step SP2.

In step SP2, microcomputer 7 defines, have microcomputer 7 eject the disc Di1 from the main body 2 after stopping disc playback Di1 in response to the extraction command given by the user through the keys 10 management.

If this step is the result of the definition is NOT, it means that the command to retrieve was not given disk Di1 was not removed from the main body 2. In this case, the microcomputer 7 returns to step SP1 and continues processing the disc Di1.

On the other hand, if the result of the definitions in step SP2 is YES, this means that the disk Di1 was removed from the main body 2 in response to the extraction command from the user. In this case, the microcomputer 7 moves to the next step SP3.

In step SP3 microcomputer 7 determines whether the file has been played up to eject Di1, file to MPEG4 video in compliance with the file extension.

As shown in figure 5, if the file is a music file And or music file, ".wav", ".m4a", ".m2a", "us", etc. are added to the file name as its extension. If the file is a file with MPEG4 video, ".AVI", "Mir", etc. are added to the file name as its extension.

If the result of the definitions in step SP3 is NOT, it means that the file that plays before retrieving, was a music file And or music file, not the file to MPEG4 video. In this case, the microcomputer 7 proceeds to step SP9 and finishes processing.

In this regard, when a file played to eject Di1, was a music file And or music file, processing playback does not continue from the point at which playback was stopped.

This is because the length of the music file And or music file With the equivalent of a single piece of music which is usually 5 minutes, and even when the playback is performed first, instead of continuing treatment playback from the point where playback was stopped, length excessively reproducible part short. Besides, if to take into account the music files And or, for the user it is more convenient to handle playing first, and not resume playback from the point where playback was stopped.

However, the length of the file to MPEG4 video equivalent, for example, the video for 2 hours. Suppose that the point at which it was stopped playing, corresponds to 1 hour 50 minutes from the start. In this case, if the processing of the play will be performed first, excessively played the part will be long and will force the user to run fast.

On the other hand, if the result of the definitions in step SP3 is YES, it means that the file that plays before retrieving, was the file to MPEG4 video and want to continue playing from the point where playback was stopped. In this case, the microcomputer 7 moves to the next step SP4.

In step SP4, at a time when the playback is stopped and checked out, microcomputer 7 reads the ID of the disk and the file size of the region AR1 read and write to the directory, the names of all files and all absolute address, match all files from the area AR2 directory entries, stores them in RAM 8 and proceeds to the next step SP5.

In this regard, RAM 8 has enough capacity to store the ID of disks, file size, directory entries, names of all files and absolute addresses to ten drives.

In step SP5, microcomputer 7 defines, loaded another new drive in the main body 2. If the definition is NOT, microcomputer 7 back to step SP5 and waits for a new disk; if the result of the definition is YES, the system proceeds to the next step SP6.

In step SP6 microcomputer 7 new checks the downloaded disk to match the ID of the disk, the size of the file, directory entries and names of all files stored in the RAM 8 on step SP4, and proceeds to the next step SP7.

Based on the test results, the microcomputer in step 7 SP7 determines whether the new downloaded disk Di1, extracted in step SP2.

If the test result at this step is NOT, it means that the new downloaded disk is Di2 (figure 1) and is different from the disk Di1. In this case, the microcomputer 7 back to step SP1, begins processing the disc Di2 and performs post-processing as described above.

On the other hand, if the result of the definitions in step SP7 is YES, it means that the new downloaded disk is Di1, extracted in step SP2, and disk Di1 loaded again. In this case, the microcomputer 7 moves to the next step SP8.

In step SP8, because once ejected disc Di1 loaded again, the microcomputer 7 continues processing file playback In MPEG4 video based on an absolute address (in this case, the address is "500"), the relevant point X and stored in the RAM 8, proceeds to the next step SP9 and finishes processing.

As a result, when a disk Di1 extracted during playback of the file to MPEG4 video and loaded again, the microcomputer 7 car DVD player 1 can immediately continue processing playback using the absolute address that corresponds to the point X and stored in OSU as the playhead, and allows you to provide the user with only the subsequent video without the inclusion of redundant parts.

[1-5. The functioning and results]

In the above configuration, when a disk Di1, reproducible laser puller 3, extracted and if the displayed contents is the file with MPEG4 video contained on the disk Di1, microcomputer 7 car DVD player 1 performs the following processing.

While processing the playback is stopped and you are the extraction, microcomputer 7 car DVD player 1 reads the ID of the disk and the size file from the region AR1 read and write to the directory, the names of all files and all absolute addresses that match all files from the area AR2 directory entries, and stores them in RAM 8.

Then when you boot the new disk, microcomputer 7 car DVD player 1 defines identical if the new disk is saved to disk Di1 based on the ID of the disk, the size of the file, directory entries and names of all files stored in the RAM 8.

If microcomputer 7 car DVD player 1 specifies that the new downloaded disk is Di2 different from the previously extracted disk Di1, microcomputer 7 begins processing playing a new disk Di2 first, as usual.

On the other hand, if the microcomputer 7 car DVD player 1 specifies that the new downloaded disk is identical to the previously extracted disk Di1, microcomputer 7 reads the absolute address (the address is "500"), corresponding to a point X and stored in the RAM 8, and continues playing from the same address.

As a result, the microcomputer 7 car DVD player 1 can provide the user with the results file playback In MPEG4 video that a user viewed to retrieve, since subsequent scenes without overlap.

In this case, even if the disk Di1 containing file to MPEG4 video, for which there is no concept of a "title" and "head", which is not recorded information about playing time and which is stored in one file, it is retrieved and loaded again, car DVD player 1 can continue processing file playback In MPEG4 video directly from the point at which playback was stopped during the extraction, without requiring the user to play fast.

In accordance with the above configuration, even if the disk Di1 extracted during file playback In MPEG4 the video contained on the disk Di1, and loaded again, car DVD player 1 can continue processing direct playback from the point where playback file to MPEG4 video that is stored in a single file, was stopped.

<2. The second implementation>

[2-1. Configuration car DVD player]

As a car DVD player according to the second variant of implementation has the same configuration as car DVD player 1 on the first version of the implementation shown in figure 1, a description, for convenience, is ignored.

[2-2. Configuration directory]

In addition, the configuration of the disk directory Di1 used as the object of play, as shown in figure 2 and its description will be skipped.

[2-3. The data structure]

Further, the structure of the data stored on disk Di1, as shown in Fig.6, where the part that is present in figure 3, denoted by the same numbers or letters of reference position shown in figure 3 and its description, for convenience, is ignored.

Thus, in car DVD player 1 is installed many temporary addresses playback (absolute address"350", "400", "450", "500", "550", "600" and "650") in the range of absolute address "301" "700" for file In with MPEG4 video early evenly split range at equal intervals.

Then, car DVD player 1 continues processing file playback In MPEG4 video with the playback point on temporary address playback (in this case, absolute address "450", the relevant point Z), which is previously absolute address "495", the relevant point Y, and the closest to the absolute address "495", the relevant point Y.

As a result, car DVD player 1 can continue processing playback is not specific point, which processing file playback In MPEG4 video was stopped, and with the playback point, given a temporary address playback, located on a small time previously specific point at which processing file playback In MPEG4 video was stopped. This allows the user to remember the last scene displayed immediately prior to stop playback, and then view the next scene.

[2-4. The procedure for continued processing of play, starting with the temporary address playback]

Further, with reference 7, describes how to continue the process of reproduction in which a microcomputer 7 car DVD player 1 continues processing playback, beginning with a temporary address playback, based on the point at which the disc is Di1 was stopped.

Microcomputer 7 car DVD player 1 begins with the start of operation step RT2, proceeds to step SP11, which microcomputer 7 begins processing the disc Di1 and proceeds to the next step SP12.

In step SP12, microcomputer 7 defines, have microcomputer 7 eject the disc Di1 from the main body 2 after stopping disc playback Di1 in response to the extraction command given by the user through the keys 10 management.

If this step is the result of the definition is NOT, it means that the command to retrieve was not given disk Di1 not removed from the main body 2. In this case, the microcomputer 7 returns to step SP11 and continues processing the disc Di1.

On the other hand, if the result of the definitions in step SP12 is YES, this means that the disk Di1 was removed from the main body 2 in response to the extraction command from the user. In this case, the microcomputer 7 moves to the next step SP13.

In step SP13 microcomputer 7 determines whether the file has been played up to eject Di1, file to MPEG4 video in compliance with the extension of the file, as shown in figure 5.

If the result of the definitions in step SP13 is NOT, it means that the file that plays before retrieving, is a music file And or music file, not the file to MPEG4 video. In this case, the microcomputer 7 proceeds to step SP19 and finishes processing.

In this regard, when a file played to eject Di1, was a music file And or music file, processing playback does not continue from the point at which playback was stopped.

This is because the length of the music file And or music file With the equivalent of a single piece of music which is usually 5 minutes, and even when the playback is performed first, instead of continuing treatment playback from the point where playback was stopped, the length of playing too short part. Besides, if to take into account the music files And or, for the user it is more convenient to handle playing first, and not resume playback from the point where playback was stopped.

However, the length of the file to MPEG4 video equivalent, for example, the video for 2 hours. Suppose that the point at which it was stopped playing, corresponds to 1 hour 50 minutes from the start. In this case, if the processing of the play will be performed first, too played the part will be long and will force the user to run fast.

On the other hand, if the result of the definitions in step SP13 is YES, it means that the file has been played before retrieving, is the file to MPEG4 video and want to continue playing from the point where playback was stopped. In this case, the microcomputer 7 moves to the next step SP14.

In step SP14, at a time when the playback is stopped and checked out, microcomputer 7 reads the ID of the disk and the file size of the region AR1 read and write to the directory, the names of all files and all absolute address, match all files from the area AR2 directory entries, stores them in RAM 8 and proceeds to the next step SP15.

In step SP15, microcomputer 7 defines loaded if the new drive in the main body 2. If the definition is NOT, microcomputer 7 back to step SP15 waiting for upload a new disk; if the result of the definition is YES, the system proceeds to the next step SP16.

In step SP16 microcomputer 7 new checks the downloaded disk to match the ID of the disk, the size of the file, directory entries and names of all files stored in the RAM 8 on step SP14, and proceeds to the next step SP17.

At this time, the microcomputer 7 checks whether the ID of the disk, the size of the file, the directory entry and the names of all the files stored in RAM 8, with those for disk Di1, extracted in step SP12.

Based on the test results, the microcomputer in step 7 SP17 determines whether the new downloaded disk Di1, extracted in step SP12.

If the test result at this step is NOT, it means that the new downloaded disk is Di2 (figure 1) and differs from the extracted ROM Di1. In this case, the microcomputer 7 back to step SP11, begins processing the disc Di2 and performs post-processing as described above.

On the other hand, if the result of the definitions in step SP17 is YES, it means that the new downloaded disk is Di1, extracted in step SP12, and disk Di1 loaded again. In this case, the microcomputer 7 moves to the next step SP18.

In step SP18, because once extracted disk Di1 loaded again, the microcomputer 7 continues processing file playback In MPEG4 video with the playback point on temporary address playback (in this case, absolute address "450", the relevant point Z), which is previously absolute address "495", the relevant point Y, and the closest to the absolute address "495", the relevant point Y, proceeds to the next step SP19 and finishes processing.

As a result, when the disk Di1 extracted during playback of the file to MPEG4 video and loaded again, the microcomputer 7 car DVD player 1 can immediately continue processing playback on the basis of temporary addresses playback, which is smaller and is closest to the absolute address of the corresponding point Y and stored in the RAM 8, and allows you to provide the user playback video containing a small excess part.

[2-5. The functioning and results]

In the above configuration, when a disk Di1, reproducible laser puller 3, retrieved, and if the displayed contents is the file to MPEG4 video contained on the disk Di1, microcomputer 7 car DVD player 1 performs the following processing.

While processing the playback is stopped and you are the extraction, microcomputer 7 car DVD player 1 reads the ID of the disk and the file size of the region AR1 read and write to the directory, the names of all files and all absolute addresses that match all files from the area AR2 directory entries, and stores them in RAM 8.

Then when you boot the new disk, microcomputer 7 car DVD player 1 defines identical if the new disk is saved to disk Di1 based on the ID of the disk, the size of the file, directory entries, and all file names stored in the RAM 8.

If microcomputer 7 car DVD player 1 specifies that the new downloaded disk is Di2 different from the previously extracted disk Di1, microcomputer 7 begins the first regular processing playing a new disk Di2.

On the other hand, if the microcomputer 7 car DVD player 1 specifies that the new downloaded disk is identical to the previously extracted disk Di1, microcomputer 7 performs the following processing.

Microcomputer 7 car DVD player 1 reads absolute address that matches the point Y, which is stored in RAM, 8, and continues processing the file playback In MPEG4 video with the playback point on temporary address playback (absolute address "450"that corresponds to the point Z), which is smaller and is closest to the absolute address of the corresponding point Y.

As a result, the microcomputer 7 car DVD player 1 allows the user to view the playback video file to MPEG4 video that the user was looking to extract comprising the excess part, with the temporary address playback located just before the point at which playback was stopped.

In this case, providing a user played the video contains a small excess part, beginning with a temporary address playback, which is before the point at which playback was stopped, microcomputer 7 car DVD player 1 allows the user to remember the last scene, where the user was looking to extract, and view later played the video without surprises.

In this case, even if the disk Di1 containing the file to MPEG4 video that has no concepts of "header" and "head", which is not recorded information about playing time and which is stored in one file, it is retrieved and loaded again, car DVD player 1 allows the user to watch the subsequent results file playback In MPEG4 video, maintaining a sequence of scenes in user memory without requiring the user to play fast.

Additionally, use the playback point temporary address playback, which is less than the absolute address that corresponds to the point Y and stored in RAM 8, and is closest to the absolute address of the point Y, microcomputer 7 car DVD player 1 can minimize redundant part while maintaining the sequence of scenes in user memory.

Moreover, establishing many temporary addresses playing in the range of absolute address "301" "700" for file In with MPEG4 video, pre evenly dividing range into equal intervals and using one of the temporary addresses playing as the point play to resume playback, car DVD player 1 can reduce the computational load on microcomputer 7 and achieve immediate continue processing playback.

In accordance with the above configuration, even if the disk Di1 extracted during playback of the file to MPEG4 video contained on the disk Di1, and loaded again, car DVD player 1 can continue processing direct playback from the point that is near the point at which the file is played In MPEG4 the video is stored in one file, was stopped.

[3. The third variant of implementation]

[3-1. Configuration car DVD player]

As a car DVD player according to the third variant of implementation has the same configuration as car DVD player 1 according to the first variant the implementation shown in figure 1, a description, for convenience, is ignored.

[3-2. Configuration directory]

In addition, the configuration of the disk directory Di1 used as the object of play, as shown in figure 2 and its description will be skipped.

[3-3. The data structure]

Further, the structure of the data stored on disk Di1, as shown in Fig in which parts available figure 3 denoted by the same numbers or letters of reference position shown in figure 3 and its description, for convenience, is ignored.

In this case, as will be described below, car DVD player 1 according to the third variant of realization does not continue processing playback from a specific absolute address "500", corresponding, for example, the point X disk Di1, and continues processing playing with absolute address corresponding to the point time X-and that is before the point X at the preset time (e.g. 20 seconds).

As a result, car DVD players can continue processing playback is not with the specific point at which processing file playback In MPEG4 video was stopped, and with point-in-time X-a, located at the scheduled time "and" rather than a specific point on which processing file playback In MPEG4 video playback was stopped. This allows the user to remember the last stage before playback is stopped and then watch the next scene.

[3-4. The procedure for continued processing of play, starting with the time of a point located at a specified time before]

Further, with reference to figure 9, the procedure continue processing the play, in which the microcomputer 7 car DVD player 1 continues processing playback from the point of time h-a that is located before the specified time "and"than the point at which the disc is Di1 was stopped.

Microcomputer 7 car DVD player 1 begins with the start of operation step RT3, proceeds to step SP31 on which the microcomputer 7 begins processing the disc Di1 and proceeds to the next step SP32.

In step SP32, microcomputer 7 defines, have microcomputer 7 eject the disc Di1 from the main body 2 after stopping disc playback Di1 in response to the extraction command given by the user through the keys 10 management.

If this step is the result of the definition is NOT, it means that the command to retrieve was not given disk Di1 not removed from the main body 2. In this case, the microcomputer 7 returns to step SP31 and continues processing the disc Di1.

On the other hand, if the result of the definitions in step SP32 is YES, this means that the disk Di1 was removed from the main body 2 in response to the extraction command from the user. In this case, the microcomputer 7 moves to the next step SP33.

In step SP33 microcomputer 7 determines whether the file has been played up to eject Di1, file to MPEG4 video in compliance with the file extensions are shown in figure 5.

This is because the length of the music file And or music file With the equivalent of a single piece of music which is usually 5 minutes, and even when the playback is performed first, instead of continuing treatment playback from the point at which playback was stopped, the length of playing too short part. Besides, if to take into account the music files And or, for the user it is more convenient to handle playing first, and not resume playback from the point where playback was stopped.

However, the length of the file to MPEG4 video equivalent, for example, the video for 2 hours. Suppose that the point at which it was stopped playing, corresponds to 1 hour 50 minutes from the start. In this case, if the processing of the play will be performed first, too played the part will be long and will force the user to run fast.

On the other hand, if the result of the definitions in step SP33 is YES, it means that the file has been played before retrieving, is the file to MPEG4 video and want to continue playing from the point where playback was stopped. In this case, the microcomputer 7 moves to the next step SP34.

In step SP34, at a time when the playback is stopped and checked out, microcomputer 7 reads the ID of the disk and the file size of the region AR1 read and write to the directory, the names of all files and all absolute address, match all files from the area AR2 entries in the directory and stores them in RAM, 8, and proceeds to the next step P35.

In step P35 microcomputer 7 defines loaded if the new drive in the main body 2. If the definition is NOT, microcomputer 7 back to step P35 waiting for upload a new disk; if the result of the definition is YES, the system proceeds to the next step SP36.

In step SP36 microcomputer 7 new checks the downloaded disk to match the ID of the disk, the size of the file, directory entries and names of all files stored in the RAM 8 on step SP34, and proceeds to the next step SP37.

At this time, the microcomputer 7 checks whether the ID of the disk, the size of the file, the directory entry and the names of all the files stored in RAM 8, with those for disk Di1, extracted in step SP32.

Based on the test results, the microcomputer in step 7 SP37 determines whether the new downloaded disk Di1, extracted in step SP32.

If the test result at this step is NOT, it means that the new downloaded disk is Di2 (figure 1) and differs from the extracted ROM Di1. In this case, the microcomputer 7 back to step SP31, begins processing the disc Di2 and performs post-processing as described above.

On the other hand, if the result of the definitions in step SP37 is YES, it means that the new downloaded disk is Di1, extracted in step SP32, and disk Di1 loaded again. In this case, the microcomputer 7 moves to the next step SP38.

In step SP38, because once extracted disk Di1 loaded again, the microcomputer 7 continues processing file playback In MPEG4 video with absolute address, the relevant point in time h-a, located at a specified time "and" previously absolute address (in this case, the address is "500"), the relevant point X and stored in RAM 8, proceeds to the next step SP39 and finishes processing.

As a result, when the disk Di1 extracted during playback of the file to MPEG4 video and loaded again, the microcomputer 7 car DVD player 1 can immediately continue processing playback with absolute address, the relevant point in time h-a, located at a specified time "and" previously absolute address (in this case, the address is "500"), the relevant point X and stored in the RAM 8, and allow the user to play video containing small excessive part in the beginning.

[3-5. The functioning and results]

In the above configuration, when a disk Di1, reproducible laser puller 3, eject, if the displayed contents is the file to MPEG4 video contained on the disk Di1, microcomputer 7 car DVD player 1 performs the following processing.

While processing the playback is stopped and you are the extraction, microcomputer 7 car DVD player 1 reads the ID of the disk and the file size of the region AR1 read and write to the directory, the names of all files and all absolute addresses that match all files from the area AR2 directory entries, and stores them in RAM 8.

Then when you boot the new disk, microcomputer 7 car DVD player 1 defines identical if the new disk is saved to disk Di1 based on the ID of the disk, the size of the file, directory entries, and all file names stored in the RAM 8.

If microcomputer 7 car DVD player 1 specifies that the new downloaded disk is Di2 different from the previously extracted disk Di1, microcomputer 7 begins processing playing a new disk Di2 from the start as usual.

On the other hand, if the microcomputer 7 car DVD player 1 specifies that the new downloaded disk is identical to the previously extracted disk Di1, microcomputer 7 performs the following processing.

Microcomputer 7 car DVD player 1 reads absolute address corresponding point X and stored in the RAM 8, and continues processing the file playback In MPEG4 video with using absolute addresses, the relevant point in time h-a, which is located at a specified time "and" before the point of X, as the playback point.

In the result, microcomputer 7 car DVD player 1 allows the user to view the playback video file to MPEG4 video that the user was looking to extract comprising the excess part, with an absolute address, the relevant point in time H-a, located just before the point at which playback was stopped.

In this case, allowing the user to view the playback video containing a small excess part, beginning with the absolute address of the corresponding point of time X-a and formerly situated the point at which it was stopped playing, microcomputer 7 car DVD player 1 allows the user to remember the last scene, where the user was looking to extract, and view later played the video without surprises.

In this case, even if the disk Di1 containing the file to MPEG4 video that has no concepts of "header" and "head", which is not recorded information about playing time and which is stored in one file, it is retrieved and loaded again, car DVD player 1 allows the user to watch subsequent results file playback In MPEG4 video, maintaining a sequence of scenes in user memory without requiring the user to play fast.

Additionally, using the absolute address of the corresponding point of time X-a, which located before the specified time "and"than absolute address that corresponds to the point X and stored in the RAM 8 as the playback point, microcomputer 7 car DVD player 1 can minimize redundant part while maintaining a sequence of scenes a user.

In accordance with the above configuration, even if the disk Di1 extracted during playback of the file to MPEG4 video contained on the disk Di1, and loaded again, car DVD player 1 can continue processing playback directly from the point that is near the point at which To play the file with MPEG4 video that is stored in a single file, was stopped.

[4. Other implementation options]

In this case, the above-described options for implementation from the first to the third deal with the case when the object of play is DVD Di1 that contains the file to MPEG4 video as the content of the video image.

However, the present invention that is not limited and subject playback can be different types other removable media on which the file is stored with MPEG4 video, such as Blu-ray disc, USB memory or removable hard drive.

In addition, the above-described options for implementation from the first to the third deal with the case where the file to MPEG4 video as the content of the video image and music files a and C as other content stored together on disk Di1.

However, this invention is not limited to this case. The audio file you can play, can be stored on disk Di1 as other content together with the file to MPEG4 video.

In addition, above the second implementation deals with the case where the set temporary addresses play set in the range absolute address "301" "700" for file In with MPRG4 video early evenly split range at equal intervals in "50" addresses.

However, the present invention that is not limited, and many temporary addresses playback can be set in the range absolute address "301" "700" for file In with MPRG4 video early evenly split range at equal intervals in a "10", "25" or "100" addresses.

In addition, the aforementioned third option realization of deals with the case when using the absolute address that corresponds to the point X, which is located at a specified time (e.g. 20 seconds) before the point X.

However, the present invention that is not limited, and can be used absolute address that corresponds to the point X, which is located at the specified time (for example, 10 sec, 30 sec or 50 seconds) before the point X.

In addition, the above variant of implementation deals with the case when processing file playback In MPEG4 video continues with absolute address corresponding to the point X, which is located at a specified time "and" past the point X.

However, the present invention that is not limited, and processing file playback In MPEG4 video can be continued from the buffer with absolute address corresponding to the point X, which is located at a specified time "and" past the point X, and the results playback can be withdrawn from the point in time at which the audio level in the results playback exceeds the specified threshold.

In this case, the microcomputer 7 may display the playback video from the part in which the audio signal exceeds the specified threshold, i.e. with breathtaking scenes in the file to MPEG4 video. This helps the user to easily remember the content and allows him more adequate view of the subsequent playback video.

In addition, the above-described options for implementation from the first to the third deal with the case where the microcomputer 7 car DVD player 1 performs the above-mentioned procedures continue processing playback through operations with RT1 on RT3 in accordance with a previously installed application.

However, the present invention that is not limited and the aforementioned procedures continue processing playback through operations with RT1 on RT3 can be carried out in accordance with the application installed with the specified media that you downloaded from the Internet, or installed any other way.

Additionally, the above implementations deal with the case where the file to MPEG4 video used as the content of the video that is stored in a single file. However, the present invention that is not limited and can be used in a file with the video that is stored in a single file and subjected to encoding with high compression way specified.

In addition, the above implementations deal with the case in which the laser puller 3 and MPEG 4 decoder performed as a means of reproduction, and the microcomputer 7, performed as a means of storage management, means for the identification and management tool are car DVD player 1, is designed as a playback device according to the present invention.

However, the present invention that is not limited and playback tool, tool storage management, the means for the identification and management tool, made in another way, can make a car DVD player 1, is designed as a playback device according to the present invention.

Industrial applicability

The playback device and how to play according to the present invention is applicable not only for car DVD player, but also for various electronic devices, such as home audio devices, personal computers, mobile phones and play device that can play removable media, such as DVD and Blu-ray discs.

List of rooms reference position

Car DVD player

Main body

Laser puller

MPEG decoder

Electronic volume control

Power amplifier

Microcomputer control system

Panel display

Control keys

LCD display

Loudspeaker

Output connector

The drive.

1. The playback device, comprising: a tool for playback playback removable storage media that contains the content of the video image that is saved in one file, and other content that is different from the content of the video image; the management tool storage to save the file size of the media, the names of all files and absolute address corresponding to the contents of video and other content, when you stop playback of the content of the video image on removable media and retrieving media information; determination tool for determining when the media is loaded again and content the video is reproduced by means of reproduction, identical whether the media extracted media information by reading the file size and the names of all files stored in the storage medium; and a management tool to continue processing the playback of video content on the basis of absolute addresses stored in the storage medium, when the means of determining determined that the media is identical to the extracted information carrier.

2. The playback device according to claim 1 in which the control unit continues playback of content videos temporary address playback, which is one of the many temporary addresses playback, the pre-set at equal intervals for the content of the video image, and temporary address playback is earlier absolute address is nearest to the absolute address.

3. The playback device of claim 1, wherein management tool continues processing playback of video content from a time point located at a specified time before relative to the absolute address.

4. The playback device according to claim 3, wherein is the management tool continues processing playback of video content from a time point located at a specified time before relative to the absolute address, and displays the results playback time the point at which the level of the audio playback results exceeds the specified threshold level.

5. The playback device of claim 1, wherein the means of determining whether the content content, video, or other content based on the extension of each file name.

6. How to play, containing: stage play to play, using the playback, removable storage media that contains the content of the video image that is saved in one file, and other content that is different from the content of the video image; stage save to save, by using the storage management, file size media, the names of all files and absolute addresses corresponding to the contents of video and other content, when you stop playback of the content of the video image on removable media and retrieving media information; identification phase to determine, with the help of means of determining when the media is loaded again and content of the video is reproduced by means of reproduction, identical whether the media extracted media information by reading the file size and the names of all files stored in the storage medium; and stage management to manage, with the help of management tools, processing continues playback of video content on the basis of absolute addresses stored in the storage medium, when the means of determining determined that the media is identical to the extracted information carrier.

7. How to play 6, which at the stage of management continue processing playback of video content from temporary addresses playback, which is one of the many temporary addresses playback, the pre-set at equal intervals for the content of the video image, and temporary address playback is earlier absolute address is nearest to the absolute address.

8. How to play according to claim 6, in which at the stage management continue processing playback of video content from a time point located at a specified time before relative to the absolute address.

9. How to play in item 8, which is at the stage of management continue processing playback of video content from a time point located at a specified time before relative to the absolute address, and displays the results playback from the point in time at which the level of the audio playback results exceeds the specified threshold level.

10. How to play according to claim 6, in which the identification stage is to determine if the content content, video, or other content based on the extension of each file name.