JP2006054680A - Multimedia system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To configure a multimedia system in which user's displeasure is eliminated by outputting a screen and sounds of another source during reproducing a portion where reproduction operation of a DVD or the like is restricted. <P>SOLUTION: The system is provided with a first source output unit 11 for reproducing and outputting a source in which operation restriction data for restricting the operation of a user are written in one part thereof, a second source output unit 12 for outputting another source, and an output switching unit 45 for selecting any one of the source output units to allow the selected unit to output. The unit 11 is provided with an operation restriction detecting unit 33 for detecting operation restriction written into a source to be reproduced, and an operation instruction storage unit 31 for storing an operation instruction by a user while updating the instruction. When the unit 33 detects that the operation instruction by the user is under operation restriction, the unit 45 selects the unit 12 side to allow the unit 12 to output to the outside, and when the unit 33 detects that the instruction is not restricted after that, the unit 45 reproduces and outputs the first source output unit by the operation of the above operation instruction. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a multimedia system capable of reproducing various media sources such as a DVD (Digital Versatile Disk) player, a hard disk (HDD) player, a video player, and a CD player, and more particularly to a DVD player or the like. The present invention relates to a multimedia system that can switch to the output of other media when an operation such as skipping is restricted during playback.

  Currently, audio visual media are diversified and used in combination, such as a DVD record player with HDD. Also, in devices mounted on vehicles, with the spread of navigation devices, television reception is displayed on the monitor screen, or video devices are connected to display the playback screen. In particular, in recent years, DVDs have been used as map recording media for navigation devices, making it possible to play back general DVDs using their playback processing functions, and also being used as DVD players.

  Furthermore, in recent years, a DVD record player with an HDD using an HDD and a DVD as a home video recorder has also become widespread, and when reproducing the HDD, the reproduction of the HDD and the reproduction of the DVD can be easily switched. Also, in connection with the use of HDDs in navigation devices, it is now possible to mount HDDs and DVDs as on-vehicle equipment and use them by arbitrarily switching their sources including navigation devices. . As a source switching device in such a mobile multimedia system, there is, for example, the following Patent Document 1.

On the other hand, for example, data is recorded on a DVD so that it can be reproduced in various ways, and a DVD player can perform reproduction according to a user's instruction using such data. Thus, for example, it is possible to fast forward during playback of a specific chapter or skip to the next chapter.
JP 2000-261733 A

  In the DVD player as described above, when a skip operation is performed on another chapter during playback of a specific chapter, the chapter on the normal playback screen can advance to a desired chapter by a predetermined skip operation. However, for example, a commercial such as a distributor of the DVD or a DVD content production company may be inserted in the initial playback portion of the disc.

  Since such a commercial is meaningless for many users, an operation of skipping the commercial and proceeding to a chapter including a desired content is often performed. If such an operation is performed, the commercial screen as described above will not be seen by most people, and the commercial effect will be lost, so the DVD distributor or DVD content production company will not skip this commercial part. Thus, a signal that does not accept skip is recorded in the DVD data.

  As a result, if the user performs a skip operation during playback of the commercial screen as shown above, for example, as shown in the screen example of FIG. 5, a message such as “Currently it cannot be operated” is displayed, and the skip operation is actually performed. It is not accepted. Such processing is performed, for example, as shown in the flow of FIG.

  That is, for example, when the user performs an operation of skipping to chapter “5” during playback of chapter “2” (step S31), this DVD player has the playback operation restriction in the management data of chapter “2”. If it is detected whether or not there is a reproduction operation restriction, the skip operation which is a user operation instruction is not accepted due to the reproduction operation restriction (step S33). When it is detected in step S32 that there is no playback operation restriction, chapter “5” is skipped in accordance with the user's operation instruction (step S34).

  The means for restricting the function of the user operation in the DVD player as described above is called user operation control (UOP), and in addition to the skip restriction as described above, fast forward, stop restriction, or menu. Call restrictions are performed. When such an operation restriction is performed, it is often very uncomfortable for a user who wants to perform the next operation. For example, if the user is looking at a commercial screen as described above, You may even think that it is better to turn away, temporarily change to another screen, or turn off the screen.

  However, if you look away from the screen, change to another screen, or turn off the screen, when the chapter that is currently restricted for playback operation ends and when the next playback operation is not restricted Because we do not know, we do not know when to perform the next operation, and every time the screen changes even during playback of a chapter that is restricted to playback operation, it is annoying that skip operation is invalid, and such operation is When it is unpleasant to repeat, the operation is performed with an excessive waiting time.

  Such playback operation limitation is not limited to DVD playback as described above, and is particularly performed in the field of digital content. The same problem occurs in various digital contents such as Blu-ray discs that are expected to become popular in the future. Will occur.

  Therefore, according to the present invention, during reproduction by the first source output means for which the reproduction operation is restricted, the second source output is used in order to eliminate the user's discomfort due to the output of the screen and sound of that portion. Multimedia system capable of performing output from the means, and capable of automatically performing reproduction output in accordance with the previous operation instruction in the original first source output means at the end of reproduction of the portion where the reproduction operation is restricted The purpose is to provide.

  In order to solve the above problems, a multimedia system according to the present invention provides a first source output means for performing playback output of a source in which operation restriction data for restricting user operations is partially written, and outputs from other sources. In a multimedia system comprising a second source output means to perform and an output switching means for selecting one of the source output means and outputting the selected external output means, the first source output means has an operation restriction written on the source to be reproduced. An operation restriction detection means for detecting and an operation instruction storage means for storing the operation instruction by the user while updating the operation instruction are detected, and the operation restriction detection means detects that the operation instruction by the user is operation restricted. When the output switching means selects the second source output means and outputs it to the outside, and then detects that the operation is not restricted, the operation is switched. Performs operations stored in the instruction storage means operation instruction, in the output switching means, characterized in that to perform the output to the outside by selecting the first source output means.

  Further, the other multimedia system according to the present invention switches to the output switching means when the operation restriction detecting means detects that the operation instruction by the user is restricted by the operation restriction in the multimedia system. Source switching signal output means for outputting the above signal and operating means for operating the second source output means.

  According to another multimedia system of the present invention, in the above multimedia system, the first source output means is a DVD player, and the second source output means is a hard disk player, a television, a video player, a navigation device, a first source. It is one of the memories provided in the second source output unit and the first source output means in the DVD player of the output means.

  According to another multimedia system of the present invention, in the multimedia system, the first source output means is a DVD player, and the second source output means is any one of a CD player, an MD player, and a radio. Features.

  Since the present invention is configured as described above, when a reproduction operation instruction is issued by the user during reproduction by the first source output means, the second source is displayed when the operation instruction is limited. By switching to the operation of the output means and outputting, it is possible to eliminate the user's discomfort due to the reproduction output of the first source output means. Further, when the operation restriction on the first source output unit is removed thereafter, reproduction output can be automatically performed according to the previous operation instruction in the original first source output unit.

  The present invention makes it possible to eliminate the user's discomfort by outputting the screen and audio during playback of a part such as a DVD where playback operation is restricted. A source in which operation restriction data that restricts user operations is written in part so that playback can be automatically output according to the previous operation instructions at the end of playback of chapters for which playback operations have been restricted. In a multimedia system comprising a first source output means for performing reproduction output, a second source output means for outputting other sources, and an output switching means for selecting one of the source output means and outputting the selected external output to the outside The first source output means has an operation restriction detection means for detecting an operation restriction written in the source to be reproduced, and an operation instruction stored while updating the operation instruction by the user. Storage means, and when the operation restriction detection means detects that the operation instruction by the user is restricted, the output switching means selects the second source output means and outputs it to the outside. Then, when it is detected that the operation is not restricted, the operation instruction stored in the operation instruction storage unit is operated, and the output switching unit selects the first source output unit and outputs it to the outside. It is a thing.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a multimedia system according to the present invention, wherein when a DVD as a first source output unit is played back, when a user's playback operation for the playback is restricted, the second source output unit is connected to the first source output unit. Playback is output instead of the output of the first source output unit, and when the playback operation restriction in the first source output unit that continues to play is released, the first source output unit can be used. It is a functional block diagram which shows the functional block of an Example, and those mutual relationship. In addition, each function part in the figure can also be said to be a means for performing each function.

  In the embodiment shown in FIG. 1, a DVD player 11 as a first source output unit, another source output unit 12 as a second source output unit which is a source output unit other than this DVD player, and various sources A head unit 13 that selects an output unit and outputs it to a monitor 14 and a speaker 15 is provided. In a multimedia system composed of these devices, an operation unit 16 is provided for a user to give operation instructions to various devices including a DVD player. I have.

  In the DVD player 11 as the first source output unit, the DVD video disk 21 is normally fixed to a table 22 rotated by a spindle motor 23 and controlled to rotate at a predetermined speed, as in this type of player. In the embodiment shown in the figure, an optical pickup 24 is disposed on the DVD video disk 21 so as to face the recording layer formed on the lower surface of the disk, and the optical pickup 24 is focused on a predetermined position through the objective lens. The semiconductor laser light is irradiated, and the laser light reflected from the digital disk is again received by the photodiode through the objective lens, thereby reproducing the RF signal recorded on the disk.

  The RF signal is amplified by an RF amplifier 25 and enters a DVD data processor 26. The DVD data processor 26 demodulates MPEG data, and performs error correction processing, separation processing of MPEG video data and audio data, and sub-picture data. Digital signal processing such as extraction processing of various management information such as user operation control information and address information is performed. Based on the MPEG video data separated by the DVD data processor 26, the MPEG video decoder in the reproduction processing unit 27 decodes the MPEG2 image data, and the sub-picture data is combined by the sub-picture decoder.

  The decoded video data and sub-picture data are input to a video processor in the reproduction processing unit 27, image data obtained by combining the two data is generated, and a video signal is created by the video encoder. The audio data separated by the DVD data processor 26 is decoded by an audio decoder, and the decoded audio data is converted into an analog music signal by passing through a digital-analog (D / A) converter. These image data and audio data are output from the output unit 28 to the output switching unit 45 of the head unit 13.

  The data recorded on the DVD video disc 21 is formatted according to a predetermined format standard, for example, as shown in FIG. That is, FIG. 4 (a) shows the data structure in the recording order on this disc, and the DVD-VIDEO area, which is the main data recording area, is the entire management information area as shown in FIG. 4 (b). And a VTS that can be divided into 99 pieces. As shown in FIG. 2C, this VTS is composed of VMGI as a main management area of the disc, title menu VOBS, and VMGI backup. Of these, VMGI records various data as shown in FIG.

  Each VTS in FIG. 4B records VTSI as a management information area and other data as shown in the figure as shown in FIG. For each VTSI, various types of data as shown in FIG. 5F are recorded, and in particular, in the title playback PGC information table, operations such as STOP, FF, FSKIP, etc. by the user are validated. Whether or not is recorded. In the present invention, this information is read and the operation described later is performed.

  When the data recorded on the DVD video disc is a movie, information for reproducing the movie is recorded in VTSI, and information such as video and audio to be one work is a video object set (VOBS). To be recorded. This VOBS is composed of a plurality of video objects (VOB) managed as a group of recording data. This VOB is composed of a set of cells (cells) as a unit of one scene or one cut in a movie, and the playback time of this cell is about several minutes to several tens of minutes.

  Each cell is composed of a plurality of video object units (VOBUs), and data with a total playback time of 0.4 seconds to 1.2 seconds is recorded in this VOBU. This VOBU includes a plurality of group of pictures in the MPEG2 format. This VOBU includes a navigation pack (NV pack: NV-PCK) in which information for managing VOBU is recorded, a video pack (V pack: V-PCK) in which main video is recorded, and an audio pack (A) in which audio data is recorded. Pack: A-PCK) and a sub-picture pack (SP pack: SP-PCK) in which sub-picture data such as subtitles is recorded.

  Each VOBU is managed based on data in a management pack called the NV pack. In this NV pack, the playback time of this VOBU is recorded as management data of the entire VOBU, and the size of the V pack in which the main video whose playback is controlled by the NV pack is recorded. In addition, this NV pack records the address, category, and user operation control information of this NV pack, and various management data such as the elapsed time from the beginning of the cell containing this VOBU. ing.

  The data structure of the NV pack includes presentation control information (PCI) that is control information for displaying video data, and data search information (DSI) that is search information for each data. The PCI includes management information for the entire PCI, angle switching information in the case of non-seamlessness, information for highlighting a predetermined area when displaying a sub-picture, main video data, Recording information of sub-picture data and audio data is recorded. In addition, the DSI includes management information (DSI GI) of the entire DSI, playback management information (SML PBI) in the case of seamless, angle information (SML AGLI) in the case of seamless, a time interval between VOBUs, etc. VOBU search information (VOBU SRI), synchronization information (SYNCI) indicating temporal coincidence with audio data and sub-picture data, and the like are recorded.

  Furthermore, the management information (DSI GI) of the DSI includes the system clock reference (NV PGK SCR) of this NV pack, the address (NV PCK LBN) of this NV pack, the end address (VOBU EA) of this VOBU, and VOBU. Various data groups such as user operation restriction information, an elapsed time (CELTM) from the head of a cell including this VOBU, and the like are recorded.

  Due to the data structure of the DVD video disc as described above, a disc-specific identification symbol is recorded in the disc reading start portion for each disc. For example, the title VOBS of VTS # 1 in FIG. The VBS for title VTS # 2 can be set as a video for promotion of a movie production company, a software maker, etc., and this portion can be set as a video to be played first at the time of automatic playback. In addition, the VTSI necessary for reproduction of the advertisement video and the NV pack of each video object unit (VOBU) in the video object (VOB) on which the video is recorded have a stop operation as user operation information. Alternatively, control information such as data for invalidating a fast forward (FF) operation or a forward skip (F-Skip) operation, that is, user operation restriction information can be arbitrarily written. Therefore, various DVD video discs are set to prohibit forward skip operations, prohibit all stop operations and fast forward operations, and set to prohibit only stop operations. Things will exist.

  In the DVD player 11 in FIG. 1, the disc management data including the above-described operation restriction information obtained by the DVD data processor 26 is output to the disc management data fetching unit 32. The operation restriction detection unit 33 fetches operation restriction data that restricts the user's operation from the data fetched by the disk management data fetching unit 32, and uses it from the operation unit 16 input by the operation instruction input unit 30. It is detected whether or not the operation instruction signal of the person is restricted. In the operation indicator device 31, the user's operation instruction signal input to the operation instruction input unit 30 as described above is stored while being updated.

  When the operation restriction detection unit 33 detects that the operation instructed by the user is a restricted operation, the operation restriction detection unit 33 outputs the signal to the other source output unit operation unit 35 and the other source output unit operation unit 35. , A predetermined other source preset in the other source switching setting unit 36 at the time of operation restriction is selected, and an operation signal is output to the source. The operation restriction detection unit 33 sends the detection signal to the source switching signal output unit at the same time, and the source switching signal output unit 34 sends a DVD to the monitor 14 and the speaker 15 to the output switching unit 45 of the head unit 13. Instead of using the output from the player 11, the output from another source output unit 12 as described later is used.

  Further, the operation restriction detection unit 33 detects that the reproduction of the chapter for which the operation is restricted is finished, and that the operation previously instructed by the operator can be performed. In this case, another source output unit operation unit is detected. The operation stop signal is output to 35, and simultaneously, the signal from the output unit 28 of the DVD player 11 is output from the monitor 14 and the speaker 15 to the output switching unit 45 of the head unit 13 from the source switching signal output unit 34 at the same time. To instruct.

  As shown in the figure, as other source output units, in addition to a source for outputting video and audio such as a hard disk, a TV, and a video, a navigation device can be used in a vehicular device. With the development that allows two chapters to be played substantially simultaneously on one DVD player, the second output section within the same DVD player can also be used. Furthermore, when a specific memory and a specific video and audio are stored, the video and audio stored when the operation restriction is detected may be output. Further, it is not always necessary to output a video, and CD, MD, and radio may be used.

  Since various source output units as described above can be used, by setting a specific source output unit such as a radio in advance in the other source switching setting unit 36 when the operation is limited, the other source output unit in FIG. The operation start signal is output from another output source operation unit 35 to the operation instruction input unit 41 of the source output unit 12, for example, to a set radio.

  In this case, in the radio as another source output unit, in addition to inputting a signal from the normal operation unit 16 in the operation instruction input unit 41 in advance, a signal from the other source output unit operation unit 35 of the DVD player 11 is also input. Also, when the operation signal is input, the power can be turned on and the specific receiving station can be received from the operation unit 16, and when the operation stop signal is input, the power can be turned off. In the illustrated embodiment, an example in which an operation signal is directly input from the DVD player 11 is shown. However, for example, when a head unit is used in a vehicle-mounted device, the operation signal is transmitted via the head unit 13. , And inputting an operation stop signal, and the like.

  In the output signal processing unit 42 in the other source output unit 12 as the second source output unit, when the operation start signal as described above is input to the operation instruction input unit 41, in the case of a hard disk, video, CD, MD, etc. Performs such playback processing, and in the case of television and radio, processing of received signals, and in the case of navigation devices, performs normal operation processing. The processed signal is output from the output unit 43 to the output switching unit 45 of the head unit 13, and when the switching signal is output from the source switching signal output unit 34 as described above, it is output to the monitor 14 and the speaker 15, and Then, the output can be switched to the output of the DVD player.

  In the multimedia system of the embodiment composed of the functional blocks as described above, it can be operated in order according to an operation flow as shown in FIG. In the operation flow shown in FIG. 2, it is determined whether or not there has been a user operation instruction during playback on the first source output unit such as a DVD player (step S1). Repeatedly, when there is an operation instruction, it is determined whether or not the instructed operation is restricted (step S2). This operation is performed in the operation restriction detection unit 33 in the example of FIG.

  When it is determined that the operation instructed in step S2 is restricted, in the example shown in FIG. 2, for example, output can be performed when the preset second source output unit such as a radio is turned on. It is determined whether or not it is in a state (step S3), and if it is not yet ready for output, the power is turned on or the like to make it ready for output (step S4). When it is determined in step S3 that the output of the second source output unit is already enabled, for example, because the second source output unit is already turned on, and when the second source output unit is enabled to output in step S4, the second Switching to the output of the source output unit (step S5). In the example of FIG. 1, the other source output unit actuating unit 35 outputs an operation start signal to the operation instruction input unit 41 of the other source output unit 12.

  Next, the operation instruction of the first source output unit that has been previously instructed while the reproduction at the first source output unit is continued is stored (step S6). This is stored in the operation instruction storage unit 31 in the example of FIG. Thereafter, in the first source output unit being reproduced, it is determined whether or not the operation restriction has been released (step S7). If it is determined that the operation has not yet been released, this operation is repeated until the operation restriction is released.

  When it is determined in step S7 that the operation restriction has been removed, the output is switched to the output of the first source output unit (step S8), and the operation is executed in accordance with the previously stored user operation instruction (step S9). In the example of FIG. 1, the operation restriction detection unit 33 detects whether the operation instruction stored in the operation instruction storage unit 31 is restricted in the management data captured by the disk management data capture unit 32, When it is detected that the limitation has been eliminated, the signal can be output to the operation instruction input unit of the DVD player.

  Next, in the example of FIG. 2, it is detected whether or not an instruction to turn off the power of the first source output unit has been received (step S10). When there is no instruction signal, the process returns to step S1 and the operation is repeated. Thereafter, when it is determined in step S10 that there is an instruction to turn off the power source of the first source output unit, the power source of the first source output unit is turned off and the operation is terminated (step S11). When it is determined in step S2 that the operation instructed by the user is an instruction that is not operation-restricted, the process proceeds to step S10, and thereafter, the operation from step S1 is repeated until the power is turned off.

  The operation flow shown in FIG. 2 is generalized to implement the present invention in various modes. However, a DVD player is used as the first source output unit and it is desired to skip to chapter 5 during playback of chapter 2. FIG. 3 shows a specific operation flow when the user gives an operation instruction. In the example shown in FIG. 3, when the user performs a skip operation to chapter “5” during playback of chapter “2” (step S21), the skip operation to chapter “5” is played back in step S22. It is determined whether or not the operation is restricted.

  As a result of the determination in step S22, when it is determined that the skip operation to chapter “5” is an operation restriction, the user operation of skipping to chapter “5” is saved (step S23). Next, the source is switched to another source such as a radio (step S24). Thereafter, it is determined whether or not there is still a playback operation limit (step S25). When it is determined that the playback operation limit is still present, the determination is repeated. When it is determined that the playback operation limit has been removed, the original source is determined. A user operation is executed to return to the previous step and skip to the saved chapter “5”. As a result, chapter “5” is reproduced (step S28). If it is determined in step S22 that there is no restriction on the reproduction operation, the process proceeds to step S28 as it is, and chapter “5”, which is a user operation instruction, is reproduced.

  The multimedia system according to the present invention can be used as a multimedia system that operates in connection with various video devices and audio devices for general households, and also as a multimedia system for vehicles equipped with various AV devices. It can be used effectively. Further, if the DVD player has a function of performing a plurality of reproduction outputs simultaneously, the present invention can be used with one DVD player. Further, when specific video and audio are separately stored in a memory or the like for one player, the video and audio stored in the memory is output when the playback operation is restricted, thereby allowing the present invention to be used with one player. Can be used as a wide range of multimedia systems.

It is a functional block diagram of the Example of this invention. It is an operation | movement flowchart at the time of implementing this invention in various aspects. It is an operation | movement flowchart based on an example at the time of using DVD as a 1st source output part of this invention. It is a figure which shows the example of data recorded on the disk of DVD. It is a figure which shows the example of a screen display at the time of the operation | movement limitation in the conventional DVD player. It is an operation | movement flowchart of the operation | movement limitation related part in the conventional DVD player.

Explanation of symbols

11 DVD player (first source output unit)
12 Other source output section (second source output section)
DESCRIPTION OF SYMBOLS 13 Head unit 16 Operation part 21 DVD disk 26 DVD data processor 27 Playback processing part 28 Output part 30 Operation instruction input part 31 Operation instruction memory part 32 Disk management data taking part 33 Operation restriction detection part 34 Source switching signal output part 35 Others Output source operation unit 36 Other source switching setting unit 41 when operation is restricted 41 Operation instruction input unit 42 Output signal processing unit 43 Output unit 45 Output switching unit

Claims (4)

First source output means for performing reproduction output of a source in which operation restriction data for restricting user's operation is partially written, second source output means for outputting another source, and any one of the source output means In a multimedia system having output switching means for selecting and outputting to the outside,
The first source output means includes an operation restriction detection means for detecting an operation restriction written in the source to be played back, and an operation instruction storage means for storing the operation instruction by the user while updating it,
When the operation restriction detecting means detects that the operation instruction by the user is operation restricted, the output switching means selects the second source output means and outputs it to the outside, and then the operation restriction is performed. When it is detected that there is no output, the operation instruction stored in the operation instruction storage means is operated, and the output switching means selects the first source output means and outputs it to the outside. Multimedia system.   A source switching signal output means for outputting a switching signal to the output switching means when the operation restriction detection means detects that an operation instruction by the user is restricted; and a second source output means 2. The multimedia system according to claim 1, further comprising operating means for performing the operation.   The first source output means is a DVD player, the second source output means is a hard disk player, a television, a video player, a navigation device, a second source output unit in the DVD player of the first source output means, and a first source output means. The multimedia system according to claim 1, wherein the multimedia system is any one of the memories included in the multimedia system. 2. The multimedia system according to claim 1, wherein the first source output means is a DVD player, and the second source output means is any one of a CD player, an MD player, and a radio.

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