JP4198331B2 - Recording device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a recording apparatus, for example, regarding a program including a video and audio to be broadcast, the recording apparatus for recording on a recording medium such as a hard disk (HDD) or a digital video disc (DVD).
[0002]
[Prior art]
In recent years, recording and storage media, peripheral devices, image processing technology, and the like have been rapidly advanced. As a result, it is possible to maintain the quality of the current TV broadcast wave and to enable individuals to easily save and edit video data (broadcast content) on recording media such as HDD (hard disk) and DVD (digital video disk). Next-generation video recording devices have been provided.
[0003]
In such a recording technology environment, for example, “Multimedia conference record creation support apparatus and method” disclosed in Japanese Patent Application Laid-Open No. 7-182365 recognizes keywords, speakers, and the like by image or voice recognition, and assigns importance to them. It is disclosed that a digest version is prepared according to the determination result.
[0004]
In addition, “Storage type information broadcasting system and receiving terminal device of this system” disclosed in Japanese Patent Application Laid-Open No. 11-196385 receives a digest version of TV content locally as an EPG (electronic program guide) for preference analysis and A technique for determining and storing the content to be received after keyword search is disclosed.
[0005]
[Problems to be solved by the invention]
However, in the conventional technique as described above, a digest version is created by identifying a speaker by voice recognition. For example, a scene with a high degree of attention is extracted in a sports broadcast or the like, and a digest version is shot. It was not possible to create a digest version with a simple configuration and a low recording area.
[0006]
The present invention has been made in view of the above problems, and an object thereof is to enable output of a digest version with a simple configuration.
[0007]
[Means for Solving the Problems]
In order to solve the above-described problem, a recording apparatus according to the present invention includes:
In a recording device that records content consisting of video information and audio information,
The content is divided into a plurality of scenes at regular intervals,
By the information created based on the sound level of the divided scenes,
When extracting the front and rear of the scene of the plurality of predetermined audio level over a relatively higher scene及patron audio level from the voice level of the before or after the scene of the scene as a digest scene is cut out of the front and rear scene Has means to change the number
The configuration.
[0008]
Here, an operation for extracting the digest scene in response to an instruction from the user can be performed.
[0009]
Also comprises a means for storing the content, for the stored content may configured to perform an operation for extracting the digest scene. In this case, it the configuration format of the content to be the storage is an MPEG format.
[0010]
The configuration includes a division in addition commercials divided into the plurality of scenes of the content, also divided into the plurality of scenes of the content may be configured further including a dividing of the scene changes.
[0011]
Further, the configuration includes means for outputting by connecting the digest scene of the extracted. The number of scenes to be extracted can be changed based on at least one of the number of scenes and time.
[0012]
Further, the content can be edited based on the digest scene extraction result, the edited result can be saved, and the content before editing can be deleted.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Preferred embodiments of a recording apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. The present invention is not limited to this embodiment.
[0014]
First, the configuration of the recording apparatus will be described. FIG. 1 is a block diagram showing a configuration of a recording apparatus according to an embodiment of the present invention. The recording apparatus 10 realizes a recording environment for recording moving image information such as a television program as in a normal VTR (VCR). For this reason, the recording apparatus 10 is provided with a controller 11 for comprehensively controlling the entire apparatus. As will be described later, the controller 11 includes an external input unit 12, a broadcast tuner 13, an image capture compression unit 14, a recording unit 15, an editing unit 16, another operation SW unit 17, a SW 18, Is connected.
[0015]
The controller 11 is composed of a highly functional microcomputer system. That is, the controller 11 includes a CPU 20 that performs overall control according to a control program, a ROM 21 that stores a control program, a RAM 22 that is used as a working memory, and a timer 23 that is used for reserved recording. I have.
[0016]
The external input unit 12 is configured by an input key group, a display panel using liquid crystal, LED, or the like so that the user can perform various input operations via the controller 11. That is, the external input unit 12 includes a remote controller or a switch provided in each device, and is configured to set a start signal, an interruption signal, a program start time, a program end time, and the like.
[0017]
For example, the image capturing / compression unit 14 captures a moving image (capture: captures it as a file) and then performs compression processing in the MPEG format. Note that MPEG is an abbreviation for Moving Picture Experts Group / Moving Picture Image Experts Group, and is an encoding method standardized by an organization that promotes standardization work for color moving image encoding methods.
[0018]
The moving image compression encoding method uses DCT (Discrete Cosine Transform), which is an algorithm created for video conferencing, and can be encoded in real time. Also, MPEG includes H.264. There are three popular systems such as H.261, MPEG1, and MPEG2, but these are selected according to the recording medium, input / output function, broadcast medium, etc., and any of these may be used, and other video compression systems. May be.
[0019]
The broadcast tuner 13 functions in the same way as a normal television, and may be a substitute for a general television. The decompression unit 19 decodes (decodes) an ordinary TV signal (NTSC (National Television System Committee) method) and outputs a signal that can be viewed on a television when the compression method is MPEG format. Yes, the decoded image is reproduced and sent to a display device (not shown).
[0020]
The recording unit (storage device) 15 is a storage medium such as an HDD (hard disk) or a DVD (digital video disk), and is a device that stores compressed program data (images, sounds, etc.). The recording unit (storage device) 15 is provided with a normal recording area 25 and a digest version recording area 26. In this embodiment, the normal recording area 25 and the digest version recording area 26 are provided. However, in some cases, these two recording areas may not be provided.
[0021]
The editing unit 16 is a block that performs MPEG data cutting, audio level search, tag information creation, temporary data storage, MPEG data merge function, and the like. SW18 is a switch for creating a digest version.
[0022]
Next, the operation of the recording apparatus configured as described above will be described.
In normal program recording, the output of the broadcast tuner 13 is captured by the image capture compression unit 14 and then compressed in a predetermined MPEG format and stored in the recording unit 15 in the same manner as the VTR. In the case of timer reservation, recording is performed in the normal recording area 25.
[0023]
Next, operations that characterize the present invention will be described. FIG. 2 is a flowchart showing an operation example of the recording apparatus according to the present invention. First, when the SW 18 is pressed by the user (step S11), the editing unit 16 searches (voice scan) the audio of the entire designated content (step S12). Subsequently, tag information in a range equal to or higher than a predetermined threshold level is created (step S13). That is, tag (index) information of a portion with a high audio level (a portion exceeding the specified value) is created. In other words, the scene is divided for the stored content here.
[0024]
Subsequently, the previous time-Z time and the later time + Z time in the tag information time data are calculated (step S14). Further, the tag areas are merged based on the tag information (step S15), a file name is assigned and saved (step S16), and the content is deleted (step S17).
[0025]
In other words, here, scenes (tag information ± 1 scene, etc.) based on a predetermined time before or after the tag information or the number of scenes divided in advance are cut out and connected to each other in the digest version recording area 26 of the recording unit 15. Saved. The specific content selection method is performed in the same manner as conventional VTRs, CDs, and the like.
[0026]
Further, after the tag information is created, the tag information + α portion is cut out and merged (one ordered list is created). The digest version merged and completed is stored with a different name in the digest version recording area 26. As a method of creating the tag information + α portion, a method by specifying the number of scenes and a method by specifying time are used.
[0027]
In addition, tag information creation methods include creating tag information in a range where the audio level exceeds a certain level, or the ratio of the audio level (instantaneous or average) of a specific scene to the overall average audio level exceeds a certain level. The tag information creation method for the selected scene is adopted.
[0028]
Next, an example of creating a digest version will be described with reference to FIGS. FIG. 3 is an explanatory diagram showing a digest version creation example (part 1) according to the embodiment of the present invention. In FIG. 3, reference numeral 100a is the main content divided every three minutes, and reference numeral 110a is a digest version. In this example, the average voice level in the divided section is searched, and the digest version 110a having a voice threshold level of 5 or more is created.
[0029]
That is, the content 100a is divided in advance in units of a predetermined time (here, 3 minutes), and the average audio level of each division unit is calculated. When a digest version is created, a certain voice threshold level is set (in this example, 5 or more), and tag information is added to a place above that level. In this addition method, a tag information / area No or time range information pair is secured in another area. Subsequently, only the tag part is merged (one ordered list is created) to create a digest version 110a, which is stored in another area with a different name.
[0030]
This scene division method may be a method (not shown) other than the time unit (scene change recognition, between CMs). Also, the detection of the audio level is performed by creating tag information at a ratio of the audio levels before and after, for example, the portion of the average audio level of the previous scene ≧ 2.
[0031]
FIG. 4 is an explanatory diagram showing a digest version creation example (part 2) according to the embodiment of the present invention. In FIG. 4, reference numeral 100b is the main content divided every three minutes, and reference numeral 110b is a digest version. Here, the content 100b is voice-scanned in an analog manner, and a certain time before and after the voice level 101 exceeds the voice threshold level 102 is extracted as tag information. After that, as described above, only the tag part is merged (one ordered list is created) to create a digest version 110b, which is stored in another area with a different name.
[0032]
In addition, without providing the SW 18 described above, after recording a program by selecting the simple digest version recording mode, a simple digest version is created and stored, and the original content is deleted, thereby shortening the recording area. Also good.
[0033]
The tagging of the audio level in the above is performed according to the ratio of the audio level of the specific part with respect to the average level of the entire area as well as the absolute level, or the entire area of the content is divided into details in advance and the scenes before and after the tag information scene are applied. You may set by the absolute value or ratio of an audio | voice level.
[0034]
The detailed division of the specific part and content is realized by using any of the conventional methods such as time division method, commercial detection method, fine scene division by image recognition, zooming detection, etc., although not shown. The In addition to time-based clipping before and after the tag portion, the number of scenes divided by the above-described method or a combination of time and scene may be used.
[0035]
Therefore, according to the recording apparatus described above, a digest version can be created with a simple configuration. In particular, when creating a digest version for sports broadcasts, etc., the voice level of the announcer / explanator / audience is particularly high in scenes with high attention. A digest version can be created.
[0036]
Also, by changing the scene cut-out time before and after the tag, it is possible to customize it to a digest creation function of your choice. Furthermore, compared to conventional methods such as keyword detection and image analysis, it is possible to create a digest version in which only a portion that is raised by a simpler method is viewed.
[0037]
As described above, according to the recording apparatus according to the present embodiment, in the recording apparatus that records content supplied from a program including video or audio that is broadcast wirelessly or by wire, the recording storage unit stores the content. detects the audio level of the content stored in the recording storing means, an editing means for creating tag information in accordance with the sound level, is provided with the, recording target image such as a program HDD or a DVD, etc. When recording on the storage media, search the audio level for the entire recording area, extract the part where the audio level is higher than the surroundings, for example, announcer, commentator, It is now possible to create tag (index) information for attention scenes where the voice is high due to audience cheers. Since, the creation of simple and high-level digest with implementing, by deleting the original content, it is possible to reduce the recording area.
[0038]
Also, in this case, the editing means automatically edits the scenes near the tag information and creates a simple digest version, for example, paying attention to the high sound level due to the cheers of announcers, commentators and spectators in sports programs etc. Since the tag information obtained as a scene reference is used, a digest version of a high-level scene of interest can be created.
[0039]
Further, the editing means detects the sound level using the absolute value of the sound volume as the sound level, and adds a range where the sound level absolute value exceeds a predetermined threshold as tag information. Tag information of the scene of interest can be created.
[0040]
Further, the editing means uses the ratio of the average sound volume near the tag information or the entire average volume as the sound level, so that when the sound level is scanned and the tag information is created, the average sound level, the scene before and after the tag information, Since the ratio is used, a scene of interest such as a sports program can be more accurately secured.
[0041]
In addition, by automatically editing the scene in the vicinity of the tag information according to the number of the pre-division setting the scene in the vicinity of the tag information scene, it can be customized to digest ability to create their liking.
[0042]
In addition, since the scene near the tag information is automatically edited according to the specific time before and after the tag information, it can be customized to a digest creation function of your choice.
[0043]
【The invention's effect】
As described above, according to the recording apparatus of the present invention, the content is divided into a plurality of scenes at regular time intervals, and a plurality of scenes are obtained based on information created based on the audio levels of the divided scenes. means for varying the time of extracting the front and rear of the scene of the audio level before or after the relatively high predetermined sound level higher than the audio level of the scene scene及patron as digest scene, the number of cutting of the preceding and following scenes of Therefore, it is possible to create a high-level digest version with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a recording apparatus according to an embodiment of the present invention.
FIG. 2 is a flowchart showing an operation example of the recording apparatus according to the present invention.
FIG. 3 is an explanatory diagram showing a digest version creation example (part 1) according to the embodiment of the present invention;
FIG. 4 is an explanatory diagram showing a digest version creation example (part 2) according to the embodiment of the present invention;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Recording apparatus 11 Controller 12 External input part 13 Broadcast tuner 14 Image taking compression part 15 Recording part (storage apparatus)
16 Editing section 18 SW
25 Normal recording area 26 Digest version recording area

Claims (9)

In a recording device that records content consisting of video information and audio information,
The content is divided into a plurality of scenes at regular intervals,
By the information created based on the sound level of the divided scenes,
When extracting the front and rear of the scene of the plurality of predetermined audio level over a relatively higher scene及patron audio level from the voice level of the before or after the scene of the scene as a digest scene is cut out of the front and rear scene A recording apparatus comprising means for changing the number . The recording apparatus according to claim 1, wherein the operation of extracting the digest scene is performed in response to an instruction from a user. 3. The recording apparatus according to claim 1, further comprising means for storing the content, and performing an operation of extracting the digest scene from the stored content.   4. The recording apparatus according to claim 3, wherein a format of the stored content is an MPEG format. In the recording apparatus according to any one of claims 1 to 4, the recording apparatus characterized by comprising a division in more commercials divided into the plurality of scenes of the content. In the recording apparatus according to any one of claims 1 to 5, the recording apparatus characterized by comprising a division in the divided further scene change to the plurality of scenes of the content. In the recording apparatus according to any one of claims 1 to 6, the recording apparatus characterized by comprising means for outputting by connecting the digest scene of the extracted. 2. The recording apparatus according to claim 1 , wherein the number of scenes before and after extraction is changed based on at least one of the number of scenes and time. In the recording apparatus according to any one of claims 1 to 8, edit the content based on the digest scene of the extraction result, stores the editing result, and deletes the contents of the unedited recording apparatus.

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