JP2008312025A - Video image content data reproduction apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To specify an ordinary reproduction starting position from a retrieving image with a simplified operation when switching reproduction to ordinary speed reproduction in a state where video image content data is reproduced at a high speed. <P>SOLUTION: The apparatus includes: a position information extraction part 132 for extracting each piece of position information contained in image frame data of video image content data 121 corresponding to a temporary stop point and a predetermined number of temporary stop neighborhood points located at a predetermined time interval around the temporary stop point if processing is temporarily stopped when the video image content data 121 of a reproduction object is under fast speed reproduction; a thumbnail image generation part 133 for generating and displaying thumbnail images corresponding to the plurality of pieces of position information; and an ordinary reproduction start instruction part 134 for sending an instruction of starting reproduction at an ordinary speed from a data position of a generation source of the selected thumbnail image when one thumbnail image is selected from displayed ones. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a video content data playback device for playing back video content data.

  In a video content data playback apparatus, when a user views recorded video content data, only a part of the CM (commercial message) zone may be played back at high speed, such as fast-forwarding a CM (commercial message) zone.

  Thus, when a part of the video content data is played back at a high speed, when the operation is performed to start playback by switching to normal speed playback (same speed playback) at the desired position, There is often a problem that a certain normal reproduction start position is passed, and the operation for specifying the normal reproduction start position becomes complicated.

  As a technique for specifying a desired position in video content data, there is one described in Patent Document 1.

  In Patent Document 1, sample image frames obtained by sampling video content data at an arbitrary interval and at an arbitrary size are recorded and reproduced as sample image frame groups for search in association with metadata such as reproduction time. A technique is described in which a desired position in video content data is specified by a user searching for a desired sample image frame from the sample image frame group recorded in the apparatus.

With this technique, the user can identify the desired position as the reproduction start position or the like by allowing the user to confirm and search the content of the video in the sample image frame.
JP 2000-287165 A

  However, in the technique of Patent Document 1, it is necessary to extract a sample image frame from the entire video content data in advance and record the sample image frame group in a database. Therefore, when reproducing video content data recorded on an external medium such as a DVD (Digital Versatile Disk), the sample image frame group must be generated when the medium is inserted into the recording / reproducing apparatus, and the startup time is There was a problem of becoming longer.

  In addition, if there are a large number of sample image frames to be extracted, it takes more time to generate a group of sample image frames and the recording capacity increases, which makes it difficult to generate sample image frames at short intervals. It was.

  Therefore, the present invention allows normal playback from a search image with a simple operation without creating a search image in advance when switching to playback at normal speed while video content data is being played back at high speed. It is an object of the present invention to provide a video content data reproducing apparatus capable of specifying a start position.

  In order to achieve the above object, a video content data playback apparatus (1) of the present invention plays back recorded video content data in accordance with an acquired playback instruction, and records video content data (121) to be played back. The video content data recording unit (12) to be played, and the video to be played back recorded in the video content data recording unit (12) from the playback start position specified by the playback command when the playback command is acquired A reproduction control unit (131) that performs reproduction processing for reproducing the content data (121) at a speed specified by the reproduction instruction, and pauses the reproduction processing when a pause instruction is acquired during the reproduction processing; The reproduction control unit (131) performs normal reproduction of the video content data (121) to be reproduced. When the playback process is paused by the pause instruction when the playback process is being performed at a higher speed than the normal speed playback, the pause point that is the paused point and a predetermined time centered on the pause point (121) Each position information included in the image frame data of the video content data to be played back corresponding to each of the pause neighboring point groups that are a predetermined number of points before and after the interval is switched to the normal speed playback for playback. A position information extraction unit (132) that extracts each as a reproduction start position candidate to be started, and image frame data in the video content to be reproduced corresponding to each position information extracted by the position information extraction unit (132) A group is acquired from the video content data recording unit (12), and these image frames A thumbnail image generation unit (133) that generates and displays thumbnail images from each data group, and one thumbnail image is selected from the thumbnail images generated and displayed by the thumbnail image generation unit (133). Normal playback which is a playback instruction to start playback by switching from the data position in the video content to be played back to the same-speed playback of the image frame data from which the selected thumbnail image is generated And a normal reproduction start instruction unit (134) for sending an instruction to the reproduction control unit (131).

  Further, in the position information extraction unit (132) of the video content data playback device (1), the temporary stop neighboring point is set according to the playback speed when the playback process was performed before the pause. It may be extracted at different time intervals.

  In addition, the position information extraction unit (132) of the video content data playback device (1) further displays the thumbnail image generated and displayed by the thumbnail image generation unit (133) in the time series in front or rear. When a thumbnail image update instruction for updating to a thumbnail image corresponding to the image frame data of the content data is acquired, the pause point is moved before or after a predetermined time, and the pause point at the destination is the center. Position information in the video content data (121) to be played back corresponding to a predetermined number of pause neighboring point groups that are points that fluctuate at predetermined time intervals is extracted, and the thumbnail image generation unit (133) The temporary stop point of the destination acquired by the information extraction unit (132) and the predetermined number of A new thumbnail image group is generated based on each position information (121) included in the image frame data of the video content data to be reproduced corresponding to the stop neighboring point group, and the already displayed thumbnail image is You may make it update to a new thumbnail image group.

  According to the video content data playback device of the present invention, when switching to playback at normal speed in a state where video content data is being played back at high speed, without creating a search image in advance, with a simple operation, The normal playback start position can be specified from the search image.

<< First Embodiment >>
<Configuration of Video Content Data Playback Device according to First Embodiment>
The configuration of the video content data reproducing apparatus according to the first embodiment of the present invention will be described with reference to FIG.

  As shown in FIG. 1, the video content data playback device 1 receives an operation signal from a remote controller 2 operated by a user and outputs a video to a display device 3 such as a monitor. The video content data recording unit 12, the control unit 13, the video signal processing unit 14, and the display processing unit 15 are included.

  The operation signal input unit 11 receives a reproduction instruction, a shift instruction, a pause instruction, and the like transmitted from the remote controller 2 and sends them to the control unit 13.

  The video content data recording unit 12 is a recording medium for recording video content data 121 to be played back, and a memory for managing video content read from a hard disk drive or a DVD disc inserted in a mounted DVD drive. Etc.

  The control unit 13 includes a reproduction control unit 131, a position information extraction unit 132, a thumbnail image generation unit 133, and a normal reproduction start instruction unit 134.

  The reproduction control unit 131 is recorded in the video content data recording unit 12 from the reproduction start position designated by the reproduction instruction when the reproduction instruction is acquired from the operation signal input unit 11 or the normal reproduction start instruction unit 134 described later. The video content data 121 is acquired, and a playback process is performed to send it to the video signal processing unit 14 so that the video content data 121 is played back at a speed specified by the playback instruction.

  In addition, when the reproduction control unit 131 obtains a pause instruction from the operation signal input unit 11, the reproduction control unit 131 pauses the reproduction process of the video content data being reproduced.

  When the playback control unit 131 pauses the playback process in response to a pause instruction while the video content data 121 is being played back at a high speed, such as fast forward playback or rewind playback, by the playback control unit 131, Each position included in the image frame data of the video content data 121 respectively corresponding to the pause point that is the paused point and a pause neighboring point group that is a predetermined number of points around the pause point and at a predetermined time interval Information is extracted as a candidate for a playback start position for switching to a normal speed and starting playback.

  The thumbnail image generation unit 133 acquires the image frame data group in the video content data 121 corresponding to the plurality of pieces of position information acquired by the position information extraction unit 132 from the video content data recording unit 12, and these image frame data groups Thumbnail images are respectively generated from the image data and sent to the video signal processing unit 14.

  The normal playback start instruction unit 134, when one thumbnail image is selected from the thumbnail images generated by the thumbnail image generation unit 133, the image frame data from which the selected one thumbnail image is generated. From the data position in the content data 121, a normal playback instruction that is a playback instruction for switching to a normal speed and starting playback is sent out to the playback control unit 131.

  The video signal processing unit 14 performs signal processing such as decoding in order to reproduce the video content data 121 acquired from the reproduction control unit 131.

  In addition, the video signal processing unit 14 performs signal processing to display a plurality of thumbnail images acquired from the thumbnail image generation unit 133.

  The display processing unit 15 performs display control processing to display the video content data or the plurality of thumbnail images acquired from the video signal processing unit 14 and transmits the display content to the display device 3.

<Operation of Video Content Data Playback Device According to First Embodiment>
The operation of the video content data according to the present embodiment will be described with reference to the flowchart of FIG. 2 and the explanatory diagrams of FIGS.

  In the present embodiment, it is assumed that video content data to be played back is recorded in the video content data recording unit 12 of the video content data playback device 1 in advance.

  First, the video content data playback apparatus 1 is turned on, and the video content data 121 is recorded at the normal speed from the remote controller 2 by the user's operation while the video content data is recorded in the video content data recording unit 12. When the reproduction instruction (a), which is a reproduction instruction for causing the transmission, is transmitted, the reproduction instruction (a) is received by the operation signal input unit 11 (S1).

  When the reproduction instruction (a) is acquired by the operation signal input unit 11, the reproduction instruction (a) is sent to the reproduction control unit 131 of the control unit 13.

  When the playback instruction (a) is acquired, the playback control unit 131 acquires data from the head position of the video content data 121 specified by the playback instruction (a) from the video content data recording unit 12, and plays back the playback instruction. It is sent to the video signal processor 14 so as to be played back at the normal speed designated in (a).

  The video content data 121 acquired by the video signal processing unit 14 is subjected to signal processing such as decoding, and the display processing unit 15 performs display control processing and is reproduced on the display device 3 at a normal speed (S2).

  Here, the video content of the video content data 121 being played back at a normal speed reaches the CM section or the like, and the remote controller 2 is operated by the viewing user to fast-forward playback only the CM section. It is assumed that the reproduction instruction (b) has been transmitted (“YES” in S3).

  When a double-speed fast-forward playback instruction (b) is transmitted from the remote controller 2, it is received by the operation signal input unit 11 of the video content data playback apparatus 1 and sent to the playback control unit 131.

  When the playback control unit 131 obtains the double-speed fast-forward playback instruction (b), the playback process is switched so that the video content data 121 is played back at double speed.

  By switching the playback process to the double speed in the playback control unit 131, the video content data 121 acquired from the video content data recording unit 12 is transferred to the display device 3 via the video signal processing unit 14 and the display processing unit 15. Playback is performed at double speed (S4).

  Here, if a 10 × fast-forward playback instruction (c) is transmitted from the remote controller 2 by a user's operation in order to change to faster fast-forward playback (“YES” in S5), this 10 × fast-forward playback instruction (C) is acquired by the reproduction control unit 131 via the operation signal input unit 11, and the video content data 121 acquired from the video content data recording unit 12 is transmitted via the video signal processing unit 14 and the display processing unit 15. The data is reproduced on the display device 3 at 10 times speed (S6).

  When there is no instruction to change the playback speed in step S4 and the video content data 121 is displayed at double speed ("NO" in S4), or when the playback speed is changed and displayed at 10 speed in step S6 In (S6), when it is determined that the CM section is ended by the viewing user and a pause instruction (d) for pause is transmitted from the remote controller 2 ("YES" in S7), this pause is performed. The instruction (d) is acquired by the reproduction control unit 131 via the operation signal input unit 11.

  When the pause instruction (d) is acquired by the playback control unit 131, the playback process of the video content data 121 is paused (S8).

  When the playback process in the playback control unit 131 is paused, the position information extraction unit 132 causes the pause point that is the paused point and a predetermined number of points that move back and forth at predetermined time intervals around the pause point. Each position information included in the image frame data of the video content data 121 corresponding to the pause neighboring point group is extracted as a reproduction start position candidate for switching to a normal speed and starting reproduction (S9).

  An example of a pause point and a pause neighborhood point group in the video content data 121 extracted by the position information extraction unit 132 is shown in FIG.

  FIG. 3 shows nine points (1) to (9) as an example of a pause point and a pause neighborhood point group on the video content data 121, and point (5) is a pause point. The eight points (1) to (4) and the points (6) to (9) are neighboring point groups of the temporary stop point (5).

  The positions of the temporary stop neighboring point groups (1) to (4) and (6) to (9) are set by the relative time centered on the temporary stop point (5). As shown in Fig. 4, if the time information of the pause point (5) is 0 seconds and the playback speed before the pause is n times, the position moved back and forth at intervals of 2n seconds from the pause point (5) Point (1) is -4n seconds, point (2) is -3n seconds, point (3) is -2n seconds, point (4) is -n seconds, point (6) is + n seconds, point ( 7) is + 2n seconds, point (8) is + 3n seconds, and point (9) is + 4n seconds.

  Here, the double speed of the playback speed before being paused is double speed, each point is -8 seconds, point (2) with respect to the time information of pause point (5) Is -6 seconds, point (3) is -4 seconds, point (4) is -2 seconds, point (6) is +2 seconds, point (7) is +4 seconds, point (8) is +6 seconds, point (9 ) Is the position of +8 seconds.

  When the position information extraction unit 132 extracts each piece of position information included in the image frame data of the video content data 121 corresponding to these point groups (1) to (9), the thumbnail image generation unit 133 Image frame data in the video content data 121 corresponding to nine pieces of position information is acquired from the video content data recording unit 12, and thumbnail image groups corresponding to the point groups (1) to (9) from these image frame data, respectively. (1) to (9) are generated and sent to the video signal processing unit 14.

  The thumbnail images (1) to (9) sent to the video signal processor 14 are subjected to signal processing, and the display processor 15 is controlled to display these thumbnail images on a single screen. It is displayed on the device 3 (S10).

  An example of the display screen on which the thumbnail image groups (1) to (9) are displayed on the display device 3 is shown in FIG.

  In the display screen shown in FIG. 5, thumbnail image groups (1) to (9) are displayed on one screen, and numbers corresponding to the thumbnail image groups (1) to (9) are displayed as selection numbers and are temporarily displayed. The relative time of each thumbnail image with respect to the time information of the thumbnail image (5), which is the stop point, is displayed.

  These selection numbers (1) to (9) correspond to the number buttons “1” to “9” of the remote controller 2, and the user can select a desired thumbnail image with the number buttons.

  When the user operates the remote controller 2 to select a thumbnail image at a position where playback is to be started at a normal speed from thumbnail images displayed on the display device 3 (“YES” in S11), the selected thumbnail image is selected. The normal playback start instruction unit 134 generates a normal playback instruction (e), which is a playback instruction for starting playback at a normal speed, from the data position in the video content data 121 of the image frame data from which the thumbnail image is generated. , And sent to the reproduction control unit 131.

  When the normal playback instruction (e) is acquired, the playback control unit 131 acquires the video content data 121 from the data position specified by the normal playback instruction (e) from the video content data recording unit 12, and receives the video signal. It is reproduced on the display device 3 at a normal speed via the processing unit 14 and the display processing unit 15 (S12).

  When the reproduction process at the normal speed is started, the process returns to step S3, and it is monitored whether the fast-forward reproduction instruction is acquired again.

  When the stop instruction for stopping the display of the thumbnail image is acquired without selecting the thumbnail image in step S11, the process returns to step S5 to return to the fast-forward playback state (“NO” in S11).

  In step S7, when the reproduction instruction or the stop instruction at the normal speed is acquired instead of the pause instruction (d), the reproduction control unit 131 controls the reproduction so that the reproduction is performed at the normal speed (“S” in S14). YES ").

  If the pause instruction (d) is not acquired in step S7 ("NO" in S7) and the normal speed reproduction instruction or stop instruction is not acquired in step S14 ("NO" in S14), step It returns to S5 and is monitored until these instructions are acquired.

  These processes are performed until the reproduction process of the video content data 121 is completed (S13).

  According to the first embodiment described above, when switching to playback at normal speed while fast-forwarding playback of video content data, there is no need to create a search image in advance, and playback at normal speed. The start position can be selected from a plurality of thumbnail images, and can be specified by an easy operation without repeating operations such as playback and rewind.

  In addition, the relative time interval of each thumbnail image displayed with respect to the time information of the pause point is set according to the number of times the playback speed before the pause, so the playback speed was high. Even if the position of the pause instruction is deviated from the position where fast-forward playback is desired to end, thumbnail images can be generated from a wide time range and presented to the user as candidates for a normal speed playback start position.

<< Second Embodiment >>
<Configuration of Video Content Data Playback Device according to Second Embodiment>
Since the configuration of the video content data reproducing apparatus according to the second embodiment of the present invention is the same as that of the first embodiment, detailed description thereof is omitted.

  In addition to the reproduction instruction, the shift instruction, and the pause instruction transmitted from the remote controller 2, the operation signal input unit 11 further converts the thumbnail image already generated by the thumbnail image generation unit 133 and displayed on the display device 3 into time information. A thumbnail image update instruction to update the thumbnail image corresponding to the previous or subsequent video content data is received and sent to the control unit 13.

  When the thumbnail image update instruction is acquired, the position information extraction unit 132 of the control unit 13 moves the pause point before or after a predetermined time, and moves back and forth at a predetermined time interval around the destination pause point. Each piece of position information included in the image frame data of the video content data 121 to be reproduced corresponding to a predetermined number of pause neighboring point groups is extracted.

  The thumbnail image generation unit 133 of the control unit 13 is included in the image frame data of the video content data 121 to be played back corresponding to the destination pause point and the predetermined number of pause point groups acquired by the position information extraction unit 132. The image frame data group in the video content data 121 corresponding to each position information is acquired to generate a thumbnail image group, and the displayed thumbnail image group is updated.

<Operation of Video Content Data Reproducing Device According to Second Embodiment>
The operation of the video content data according to the present embodiment will be described with reference to the flowchart of FIG. 6 and the screen display diagram of FIG.

  In the flowchart of FIG. 6, except for the processing when the thumbnail image is not selected in step S31, the operation is the same as the operation of steps S1 to S13 of the first embodiment, and thus detailed description of the same part is omitted.

  In the present embodiment, on the display screen on which the thumbnail image group is displayed in step S30, as shown in FIG. 7A, the displayed thumbnail image further corresponds to the previous video content data in time series. A “prev” update button 71 for updating the thumbnail image to be updated, and a “next” update button 72 for updating the displayed thumbnail image to a thumbnail image corresponding to video content data later in time series It is displayed.

  In step S31, the thumbnail image displayed on the display device 3 is not selected from the thumbnail images at the position where the user wants to start playback (“NO” in S31), and the remote controller by the user is not selected. When the “next” update button 72 is selected by the operation 2 to transmit a thumbnail image update instruction, the instruction is sent to the position information extraction unit 132 via the operation signal input unit 11 (S35).

  When the position information extraction unit 132 obtains a thumbnail image update instruction by the “next” update button 72, among the thumbnail image groups (1) to (9) already displayed as shown in FIG. The central point for extracting the neighboring point group is moved from the temporary stop point (5) to the last thumbnail image (9) (S36).

  When the pause point is moved to the thumbnail image (9) in step S36, the process returns to step S29, and the pause neighboring point group which is a predetermined number of points around the thumbnail image (9) at a predetermined time interval. Each position information included in the image frame data of the corresponding video content data 121 is extracted as a reproduction start position candidate for starting reproduction by switching to the normal speed.

  When the position information extraction unit 132 extracts each piece of position information included in the image frame data of the video content data 121 corresponding to these point groups (1) to (9), the thumbnail image generation unit 133 extracts these positions. Image frame data in the video content data 121 corresponding to the information is acquired from the video content data recording unit 12, and new thumbnail image groups (1) to (9) are respectively generated from these image frame data to perform video signal processing. Sent to the unit 14.

  The new thumbnail image groups (1) to (9) sent to the video signal processing unit 14 are subjected to signal processing, and the display processing unit 15 displays these new thumbnail image groups on one screen. It is controlled and displayed on the display device 3 as shown in FIG. 7B (S30).

  In step S35, when a thumbnail image update instruction is transmitted by selecting the “prev” update button 71, the thumbnail image groups (1) to (9) already displayed as shown in FIG. ), The central point from which the neighboring point group is extracted is moved from the pause point (5) to the previous thumbnail image (1). Generated and displayed.

  According to the second embodiment described above, the same effect as that of the first embodiment can be obtained, and the reproduction start position at the normal speed can be selected from a wider range than the first embodiment.

  In the video content data playback apparatus according to the first embodiment and the second embodiment described above, the case where fast-forward playback is performed as a high-speed playback process has been described. Obtainable.

  Further, in the video content data playback device of the first embodiment and the second embodiment described above, the case where the operation button for generating and displaying the thumbnail image is a pause button has been described. However, the present invention is not limited, and it may be executed by a dedicated button for generating and displaying thumbnail images.

  It is also possible to construct a video content recording / playback program that causes the computer to function as a video content recording / playback device by programming the functional configuration of the video content recording / playback device of the above embodiment into a computer.

It is a block diagram which shows the structure of the video content data reproduction apparatus by 1st Embodiment and 2nd Embodiment of this invention. It is explanatory drawing which shows the point extracted with the video content data reproduction apparatus by 1st Embodiment and 2nd Embodiment of this invention. It is explanatory drawing which shows the time information of the relative position with respect to the pause point of the point extracted with the video content data reproduction apparatus by 1st Embodiment and 2nd Embodiment of this invention. 4 is a flowchart showing an operation of the video content data reproducing apparatus according to the first embodiment of the present invention. It is a screen display figure which shows the state where the thumbnail image produced | generated with the video content data reproduction apparatus by 1st Embodiment of this invention was displayed. 6 is a flowchart illustrating an operation of a video content data reproducing apparatus according to a second embodiment of the present invention. It is a screen display figure which shows the state (a) in which the thumbnail image produced | generated with the video content data reproduction apparatus by 2nd Embodiment of this invention was displayed, and the state (b) in which the updated thumbnail image was displayed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Video content data reproduction apparatus 2 ... Remote controller 3 ... Display apparatus 11 ... Operation signal input part 12 ... Video content data recording part 13 ... Control part 14 ... Video signal processing part 15 ... Display processing part 71 ... "prev" update button 72 ... "next" update button 121 ... video content data 131 ... reproduction control unit 132 ... position information extraction unit 133 ... thumbnail image generation unit 134 ... normal reproduction start instruction unit

Claims (3)

In a video content data playback device for playing back recorded video content data in accordance with the acquired playback instruction,
A video content data recording unit for recording video content data to be reproduced;
When the reproduction instruction is acquired, the reproduction target video content data recorded in the video content data recording unit is reproduced at a speed designated by the reproduction instruction from a reproduction start position designated by the reproduction instruction. A reproduction control unit that performs reproduction processing and pauses the reproduction processing when a pause instruction is acquired during the reproduction processing;
If the playback control is paused by the pause instruction when the playback control unit is playing back the video content data to be played back at a higher speed than the normal speed normal playback, the pause Included in the image frame data of the video content data to be played back corresponding to the pause point that is the paused point and the pause neighboring points that are a predetermined number of points around the pause point and at a predetermined time interval Each of the position information is extracted as a reproduction start position candidate for switching to the normal speed reproduction and starting reproduction; and
An image frame data group in the video content to be reproduced corresponding to each position information extracted by the position information extraction unit is acquired from the video content data recording unit, and a thumbnail image group is obtained from these image frame data groups. A thumbnail image generator for generating and displaying each;
When one thumbnail image is selected from the thumbnail image group generated and displayed by the thumbnail image generation unit, the video content to be reproduced of the image frame data from which the selected one thumbnail image is generated A normal playback start instructing section for sending a normal playback instruction, which is a playback instruction for starting playback by switching from the data position to the same speed playback, to the playback control section;
A video content data reproducing apparatus comprising: 2. The position information extracting unit is characterized in that the pause neighboring points are extracted at a time interval set in accordance with a playback speed when playback processing is performed before the pause. The video content data reproducing device described in 1. The position information extraction unit
When a thumbnail image update instruction for updating the thumbnail image generated and displayed in the thumbnail image generation unit to a thumbnail image corresponding to the image frame data of the previous or subsequent video content data in time series is acquired. The video to be played back corresponding to a predetermined number of pause neighboring points, which are points moved around the predetermined time interval with the temporary stop point moved before or after a predetermined time as a center. Extract location information in content data,
The thumbnail image generation unit
Based on the position information included in the image frame data of the video content data to be reproduced corresponding to the destination pause point and the predetermined number of pause neighboring points acquired by the position information extraction unit. 3. The video content data reproducing apparatus according to claim 1, wherein each thumbnail image group is generated and an already displayed thumbnail image is updated to the new thumbnail image group. 4.

Images