JP2013051645A - Video processing device and video processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video processing device and a video processing method, capable of automatically dividing one video recording content into a plurality of chapters, and securely reproducing from the top of a main program, and enabling the thumbnail image of a main program chapter to be an image of the main program.SOLUTION: The video processing device includes chapter set means, thumbnail position determination means and thumbnail generation means. The chapter set means sets a chapter according to a recorded content, to set a chapter mark to each chapter. The thumbnail position determination means obtains a thumbnail position by temporally shifting the chapter mark of a predetermined chapter among chapters set by the chapter set means to be delayed by a predetermined time. The thumbnail generation means generates a thumbnail image at a thumbnail position obtained by the thumbnail position determination means.

Description

  Embodiments described herein relate generally to a video processing apparatus and a video processing method for recording and reproducing video information.

  As an example of the video processing apparatus, there are a hard disk recorder and an optical disk recorder for recording a broadcast program, and a television receiver including a hard disk for recording a broadcast program. In such digital recording, chapters can be set in one recorded broadcast program. This makes it possible to quickly jump to the start position of the next chapter in the program and to play the chapter immediately, or to create a new content by freely combining (editing) chapters of the same program or another program be able to. The chapter setting can be automatically performed by judging the contents of the program, or the viewer can set the chapter start position (chapter mark) at an arbitrary position while the viewer is watching.

  There is an example in which a program is divided into a CM chapter and a main chapter, and when the main chapter is reproduced, only the main chapter is sequentially viewed by skipping the CM chapter. Here, if the position of the chapter mark of the main part deviates even in time from the actual start position of the main part, the beginning of the main part will not be reproduced. This is a serious problem for the viewer who wants to see the main part completely from the beginning to the end, skipping only the CM, so the position of the chapter mark in the main part is slightly ahead of the actual main part. It is set. As a result, it is possible to prevent a situation in which the first few seconds of the main part are not reproduced.

  On the other hand, there is a function for displaying a list of chapter thumbnail images in order to edit chapters or to determine a chapter to be viewed. The chapter thumbnail image is often a reduced image of a still image at the position of the chapter mark of each chapter. For this reason, if the chapter mark of the main part is set at a position slightly earlier than the start position of the main part, the thumbnail image of the main part chapter becomes a CM image instead of the main part.

JP 2007-180603 A Japanese Patent No. 4539884 JP 2004-147204 A JP 2000-175133 A

  In a conventional video processing apparatus, when a chapter is automatically set according to the content of one recorded content, the main chapter mark is set to prevent the situation where the first few seconds of the main part of the program is not reproduced. If the setting is shifted slightly in time from the start position, there is a problem that the thumbnail image of the main chapter becomes a CM image instead of the main portion.

  The purpose of the present invention is to automatically set a chapter for one recorded content according to the content, and to reliably reproduce the program from the beginning of the main part of the program. An object is to provide a video processing apparatus and a video processing method capable of forming an image.

  According to the embodiment, the video processing apparatus includes a chapter setting unit, a thumbnail position determination unit, and a thumbnail generation unit. The chapter setting means sets a chapter according to the content of the recorded content, and sets a chapter mark for each chapter. The thumbnail position determining means obtains the thumbnail position by shifting the chapter mark of a predetermined chapter among the chapters set by the chapter setting means by a predetermined time. The thumbnail generation unit generates a thumbnail image at the thumbnail position obtained by the thumbnail position determination unit.

It is a block diagram which shows an example of a structure of the video processing apparatus of embodiment. It is a flowchart which shows the chapter division | segmentation process at the time of completion | finish of recording. It is a flowchart which shows the list display process of a chapter thumbnail. It is a figure which shows the relationship between a chapter mark (chapter position) and a thumbnail position.

  Hereinafter, embodiments will be described with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of an embodiment of a video processing apparatus. The video processing apparatus has two types of disk drive units 21 and 23. Here, a device capable of handling both a DVD and a hard disk as a recording medium is shown. However, the present invention is not limited to these, and only one of them may be used. In addition to or in place of these, a semiconductor memory is used. A recording medium or the like may be used.

  The disk drive unit 23 rotationally drives a DVD medium as a first medium, which is an information recording medium capable of constructing a video file, and reads and writes information. The disk drive unit 23 includes a rotation control system for a DVD medium, a laser drive system, an optical system, and the like. The hard disk drive unit 21 drives a hard disk as a second medium. The hard disk drive unit 21 stores recorded content 21A, thumbnail images 21B, and chapter information 21C.

  The data processor unit 22 can supply recording data to the disk drive unit 23 and the hard disk drive unit 21 and can receive a reproduced signal. The data processor unit 22 handles data for recording or reproduction units, and includes a buffer circuit, a modulation / demodulation circuit, an error correction unit, and the like. A thumbnail generation determination unit 82 and a thumbnail generation unit 84 are connected to the data processor unit 22.

  Each block in FIG. 1 is roughly divided. The left side shows main blocks of the recording unit, and the right side shows main blocks of the reproducing unit. The video processing apparatus mainly includes an encoder unit 50 that constitutes a recording side, a decoder unit 60 that constitutes a reproduction side, and a microcomputer unit 30 that controls the operation of the apparatus main body.

  The encoder unit 50 includes a video and audio analog / digital converter that digitizes an input analog video signal or analog audio signal, a video encoder, an audio encoder, and a sub-picture encoder.

  The output of the encoder unit 50 is converted into a DVD-VR format by a formatter 51 including a buffer memory and supplied to the data processor unit 22. That is, it is converted into a format defined by a VR (Video-Recording) standard (for example, a standard for recording on DVD-RAM, DVD-R, DVD-RW, etc.).

  The encoder unit 50 receives an external analog video signal and an external analog audio signal from the AV input unit 40 or an analog video signal and an analog audio signal from the TV tuner unit 42. Note that digital video signals and digital audio signals may be used instead of analog video signals and analog audio signals. When the compressed digital video signal or digital audio signal is directly input, the encoder unit 50 can also supply the compressed digital video signal or digital audio signal directly to the formatter 51. The encoder unit 50 can also directly supply the analog / digital converted digital video signal and audio signal to the video (V) mixing unit 71 and the audio selector 76. In the video encoder included in the encoder unit 50, the digital video signal is converted into a digital video signal compressed at a variable bit rate based on the MPEG2 or MPEG1 standard. The digital audio signal is converted into a digital audio signal compressed at a fixed bit rate based on the MPEG or AC-3 standard, or a linear PCM digital audio signal.

  When a sub video signal is input from the AV input unit 40 (for example, when a signal from a DVD video player with an independent output terminal of the sub video signal is input), or a DVD video signal having such a data structure is broadcast. When it is received by the TV tuner 42, the sub-video signal in the DVD video signal is encoded (run-length encoded) by the sub-video encoder to become a sub-picture bitmap.

  The encoded digital video signal, digital audio signal, and sub-picture data are packed by the formatter 51 to become a video pack, an audio pack, and a sub-picture pack, and these are collected and converted into a format defined by the VR standard. Is done.

  Information formatted by the formatter 51 (packs of video, audio, sub-picture data, etc.) and created management information are supplied to the hard disk drive unit 21 or the data disk drive unit 23 via the data processor unit 22, and the hard disk Or it can record on DVD media. Information recorded on the hard disk or the DVD medium can also be recorded on the DVD medium or the hard disk via the data processor unit 22, the disk drive unit 23, or the hard disk drive unit 21.

  Editing processing such as deleting a part of video objects of a plurality of programs recorded on a hard disk or a DVD medium or connecting objects of different programs can be performed. A chapter may be used as an editing unit.

  The microcomputer unit 30 includes an MPU (micro processing unit) or CPU (central processing unit), a ROM in which a control program and the like are written, and a RAM for providing a work area necessary for program execution. Yes. Among the processing results of the MPU, the contents to be notified to the user are displayed on the display unit 43 of the video processing apparatus or displayed on the monitor display 45 as OSD (On Screen Display). The microcomputer unit 30 has a key input unit 44 for giving an operation signal for operating this apparatus.

  The decoder unit 60 separates and extracts each pack from a DVD format signal having a pack structure, a memory used when pack separation or other signal processing is performed, and main video data (video packs) separated by the separator. V decoder that decodes the content), an SP decoder that decodes the sub-video data (sub-picture pack content) separated by the separator, and an A decoder that decodes the audio data (audio pack content) separated by the separator Have The decoder unit 60 further includes a video processor that appropriately synthesizes the decoded sub-video with the decoded main video and outputs a menu, a highlight button, subtitles, and other sub-videos superimposed on the main video.

  The output video signal of the decoder unit 60 is input to the video mixing unit 71. In the video mixing unit 71, text data is synthesized. The video mixing unit 71 is also connected to a line that directly takes in signals from the TV tuner unit 42 and the A / V input unit 40. A frame memory 72 used as a buffer is connected to the video mixing unit 71. When the output of the video mixing unit 71 is an analog output, it is output externally via an I / F (interface) 73, and when it is a digital output, it is output externally via a digital / analog converter 74. In the case of digital output, this digital / analog converter 74 may be omitted.

  The output audio signal of the decoder unit 60 is converted into an analog signal by the digital / analog converter 77 via the selector 76 and output to the outside. The selector 76 is controlled by a select signal from the microcomputer unit 30. Thus, the selector 76 can directly select a signal that has passed through the encoder unit 50 when directly monitoring 45 the digital signal from the TV tuner unit 42 or the A / V input unit 40.

  In this embodiment, one video file is stored on one disc. In order to continue playback without interruption while accessing (seeking) data, a minimum continuous information unit (size) is determined. This unit is called CDA (Contiguous Data Area). The CDA size is a multiple of an ECC (error correction code) block (16 sectors), and the file system records in this CDA unit.

  The data processor unit 22 receives data in VOBU units from the formatter of the encoder unit 50 and supplies data in CDA units to the disk drive unit 23 or the hard disk drive unit 21. The MPU of the microcomputer unit 30 creates management information necessary for reproducing the recorded data. When the MPU recognizes a data recording end command, it sends the created management information to the data processor unit 22. Thereby, the management information is recorded on the disc. Accordingly, when encoding is performed, the MPU of the microcomputer unit 30 receives data unit information (eg, segmentation information) from the encoder unit 50. The MPU of the microcomputer unit 30 recognizes the management information (file system) read from the optical disk and the hard disk at the start of recording, recognizes the unrecorded area of each disk, and sets the recording area on data to the data processor unit 22 Is set to disk via.

  The chapter automatic setting process at the end of recording by the data processor unit 22 will be described with reference to the flowchart of FIG. When the recording of the broadcast program is completed, the processing of FIG. 2 is started. In block 202, one recorded content 21A is read from the hard disk drive unit 21, and a chapter is automatically set to the read content. Here, the contents of the recorded content are analyzed, the main part and the CM are identified, and a chapter mark is set at the start position of the main part and the CM. As described above, the position of the chapter mark of the main part is set to a position slightly earlier than the start position of the main part so that the main part chapter can be completely reproduced from the beginning. The position of the CM chapter mark is set to the start position of the CM. Note that the chapter mark can be set by the user at an arbitrary position using the remote controller during content reproduction. Chapter information 21 </ b> C such as chapter mark positions and chapter attributes (main part, CM, etc.) is stored in the hard disk drive unit 21.

  After the chapter mark is automatically set to the content, the first chapter mark of the content is read from the hard disk drive unit 21 in block 204. In block 206, it is determined whether or not the chapter attribute is the main part. If it is other than the main part, that is, if it is a CM, the process moves to block 214. If the chapter attribute is the main part, “automatic chapter” is set to the attribute (main part) of the chapter in block 208.

  In block 210, the contents of the main chapter are further analyzed to detect music in the video, and a chapter mark is set at the change of the song. This chapter mark indicates the start position of the music chapter. However, the position of the chapter mark of the music chapter is set to a position slightly before the actual start position of the music, similarly to the chapter mark of the main part. The end position of the music chapter is, for example, the start position of the talk chapter, and the chapter mark of the talk chapter is also set here. The position of the chapter mark of the talk chapter is the start position of the talk chapter as in the case of CM. In block 212, “automatic chapter” is also set to the attribute of the music chapter.

  In block 214, it is determined whether or not processing of all chapters of one recorded content has been completed. If not, the process returns to block 204, the next chapter mark is read, and the same processing is performed.

  As described above, the automatically set main chapter and music chapter are given the attribute of “automatic chapter”, and are distinguished from chapters arbitrarily set by the user. The chapter information obtained by the processing of FIG. 2 is stored in the hard disk drive unit 21 as chapter information 21C.

  A chapter screen display process for creating a list of chapter thumbnails by the data processor 22 will be described with reference to the flowchart of FIG. When a list display of a chapter thumbnail of a certain recorded content is instructed from the remote controller, the first chapter mark of the content is read from the chapter information 21C of the hard disk drive unit 21 in block 302. In block 304, the thumbnail generation determination unit 82 determines whether or not “automatic chapter” is set as the attribute of the chapter. If “automatic chapter” is set, the position where the position of the chapter mark is shifted by a predetermined time in block 306 is set as the position of the chapter thumbnail. The predetermined time is determined so that the position after the shift is surely positioned in the main chapter in consideration of the time that the position of the main chapter chapter mark is deviated from the start position of the main edition. For example, when the position of the chapter mark of the main part is shifted 2 seconds before the start position of the main part, the predetermined time is set to 3 seconds.

  If “automatic chapter” is not set, the position of the chapter mark is set as the position of the chapter thumbnail in block 308.

  Following blocks 306 and 308, in block 310, the thumbnail generator 84 compresses the still image at the chapter thumbnail position to generate a chapter thumbnail image. In block 312, it is determined whether or not processing of all chapters of one recorded content has been completed. If not, the process returns to block 302, the next chapter mark is read, and the same processing is performed. When all the chapters have been processed, all the chapter thumbnail images are stored in the hard disk drive 21 as thumbnail information 21B in block 314. Thereafter, the saved chapter thumbnail image is displayed.

  As described above, when the chapter mark is set at a position temporally prior to the actual start position by automatic chapter division, the thumbnail position is shifted temporally after the chapter mark position. This prevents the thumbnail images of the main chapter and the music chapter from becoming CM images.

  FIG. 4 is a diagram for explaining the relationship between the chapter mark setting position (chapter position) and the thumbnail position. The content is composed of CM, main part, CM, main part, and the first main part is composed of talk, music, talk, music. For the main chapter and the music chapter set by the automatic chapter division, the position before the actual start position is set as the chapter position. For the CM chapter and the talk chapter, the actual start position is set as the chapter position. The thumbnail position is the position after a predetermined time from the chapter position for the main chapter and the music chapter, and is the chapter position for the CM chapter and the talk chapter. Although the thumbnail position is shifted from the chapter position in this way, the chapter position itself is saved, so the skip position when skipping a chapter during playback is the chapter mark setting position, so the main chapter or music chapter is the first You can see it completely from end to end.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Although the video information recording apparatus having two types of recording media has been described as an embodiment, the present invention is not limited to this, and a personal computer or the like capable of recording video content may be used. In the embodiment, the content is divided into a main chapter and a CM chapter, and then the main chapter is further divided into a music chapter and a talk chapter, and the music chapter and the talk chapter are described as sub-chapter in the main chapter. Not limited to this, the content may be divided into music chapters, talk chapters, drama chapters, CM chapters, and the like. In this case, the content is divided into these various chapters in block 202 of FIG. 2, and blocks 210 and 212 are omitted. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

  21 ... Hard disk drive unit, 21A ... Recorded content, 21B ... Thumbnail image, 21C ... Chapter information, 23 ... Disk drive unit, 22 ... Data processor unit, 30 ... Microcomputer unit, 50 ... Encoder unit, 60 ... Decoder unit, 82 ... Thumbnail generation determination unit, 84 ... Thumbnail generation unit.

Claims (10)

Chapter setting means for setting a chapter according to the content of the recorded content and setting a chapter mark for each chapter;
Thumbnail position determination means for obtaining a thumbnail position by shifting a chapter mark of a predetermined chapter among the chapters set by the chapter setting means by a predetermined time in time;
Thumbnail generation means for generating a thumbnail image at the thumbnail position obtained by the thumbnail position determination means;
A video processing apparatus comprising:   The video processing apparatus according to claim 1, wherein the thumbnail position determining unit sets a chapter mark of a chapter other than a predetermined chapter among the chapters set by the chapter setting unit as a thumbnail position. The predetermined chapter is a main chapter or a music chapter,
The video processing apparatus according to claim 1, wherein the chapter mark of the predetermined chapter is set at a position temporally before the start position of the main chapter or the music chapter. It further comprises user setting means for setting a chapter mark at an arbitrary position by a user operation,
The video processing apparatus according to claim 1, wherein the thumbnail position determining unit sets the chapter mark set by the user setting unit as a thumbnail position. The chapter setting means sets an attribute indicating whether or not the set chapter is the predetermined chapter in the chapter,
When the attribute indicating that the chapter is the predetermined chapter is set, the thumbnail generation unit generates a thumbnail image at a position that is a predetermined time later than the chapter mark. The video processing apparatus according to claim 1, wherein a thumbnail image at the position of the chapter mark is generated when an attribute indicating a chapter is not set. Set chapters according to the content of the recorded content, set chapter marks for each chapter,
Shifting the chapter mark of a predetermined chapter among the set chapters by a predetermined time in time to obtain a thumbnail position;
Generating a thumbnail image of the determined thumbnail position;
A video processing method comprising:   The video processing method according to claim 6, wherein the thumbnail position is obtained by setting a chapter mark of a chapter other than a predetermined chapter among the set chapters as a thumbnail position. The predetermined chapter is a main chapter or a music chapter,
The video processing method according to claim 6, wherein the chapter mark of the predetermined chapter is set at a position temporally before the start position of the main chapter or the music chapter. Further comprising setting a chapter mark at an arbitrary position by a user operation,
The video processing method according to claim 6, wherein obtaining the thumbnail position includes setting the set chapter mark as a thumbnail position. Setting the chapter and the chapter mark further comprises setting an attribute indicating whether or not the set chapter is the predetermined chapter in the chapter,
When the attribute indicating that the chapter is the predetermined chapter is set, generating the thumbnail image generates a thumbnail image at a position that is a predetermined time later than the chapter mark. The video processing method according to claim 6, wherein when the attribute indicating the predetermined chapter is not set, a thumbnail image at the position of the chapter mark is generated.

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