JP2014027380A - Video data reproduction device, video data reproduction method, and video data reproduction program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a video data reproduction device which can extract a desired time position in video data more surely and easily than before.SOLUTION: A first time range referenced to a time position at which video data is temporarily stopped as a reference time position is set. A reproduction restart position selection image Im0 having first thumbnail images disposed at time positions corresponding to the opposite ends of the first time range and time positions into which the first time range is divided is displayed on a screen. A second time range determined by the time positions of two adjacent first thumbnail images or a second time range centering on the time position of one first thumbnail image is set. A reproduction restart position detailed selection image Im1having second thumbnail images disposed at time positions corresponding to the opposite ends of the second time range and time positions into which the second time range is divided is displayed on the screen, for extracting a desired time position.

Description

  The present invention relates to a video data reproducing apparatus, a video data reproducing method, and a video data reproducing method capable of easily extracting a desired time position in video data being reproduced in a forward direction or a reverse direction at a predetermined double speed including a single speed. Regarding the program.

  In a video data playback device that plays back video content, in order for the user to quickly reach the target scene at the playback position, the video data is fast-forwarded in the forward direction in which the time is advanced at a predetermined speed, or the time is returned. Or fast reverse in the opposite direction. In addition to fast-forwarding and fast-rewinding, jump playback in which video data is jumped for a fixed time such as 30 seconds or 60 seconds at a time and then shifted to normal playback at 1 × speed is also used.

  When a search operation for searching for these target scenes is performed, there is a case in which the normal playback is shifted past the time position desired by the user. This is until the user recognizes that the target scene has been reached, performs an operation of shifting to normal playback by an operation unit such as a remote controller, and the video data playback device performs an operation according to the operation of the operation unit. This is because it takes a predetermined time.

  When the user passes the desired time position, the user must search for the desired time position again by performing a search operation in the reverse direction at a low speed. In order to reach a desired time position, a plurality of search operations may be performed. Patent Documents 1 to 3 describe a technique for improving the problems of such a conventional video data reproducing apparatus.

JP 2005-293680 A JP 2006-324850 A JP 2007-243630 A

  A video data playback device, video data playback method, and video data playback program that can easily extract a desired time position in video data more reliably than the methods described in Patent Documents 1 to 3 are desired.

  In order to meet such a demand, an object of the present invention is to provide a video data reproducing apparatus, a video data reproducing method, and a video data reproducing program capable of more reliably and easily extracting a desired time position in video data. And

  In order to solve the above-described problems of the prior art, the present invention reproduces the video data in the forward direction by setting the time position at which the video data being played back in the forward direction or the backward direction is temporarily stopped as a reference time position. Is set in the reverse direction from the reference time position, and when the video data is being played in the reverse direction, a first time range is set in the forward direction from the reference time position, and the first time range is set to a predetermined value. A first time position extracting unit (13) for extracting each first divided time position divided by the number of divisions, and a first thumbnail image for generating the first thumbnail image of the video data at each of the first divided time positions. One thumbnail generation unit (14) and a reproduction start position selection image in which the first thumbnail images are arranged at positions corresponding to the time positions of the first divided time positions, respectively. A reproduction start position selection image generation unit (31) and a second time range determined by the time positions of two adjacent first thumbnail images in the reproduction start position selection image, or 1 in the reproduction start position selection image A second time range centered on a time position of each of the first thumbnail images is set, and a second divided time position obtained by dividing the second time range by a predetermined number of divisions is extracted. Two time position extraction units (13), a second thumbnail generation unit (14) for generating a second thumbnail image of the video data at each of the second division time positions, and the second division time position A reproduction start position detail selection image generation unit (generates a reproduction start position detail selection image in which the second thumbnail images are arranged at positions corresponding to the respective time positions ( To provide a video data reproducing apparatus comprising: a 1) and.

  In the video data reproducing apparatus, it is preferable that the first time position extracting unit sets the first time range longer as the double speed number at which the video data is reproduced is larger.

  In the video data reproducing apparatus, the second time position extracting unit is configured to operate the first cursor key (407) on the operation unit while the reproduction start position selection image is displayed on the screen. The second time range determined by the first thumbnail image selected and determined and the first thumbnail image adjacent to the right is set, and the operation is performed while the reproduction start position selection image is displayed on the screen. When the second cursor key (408) in the screen is operated, it is preferable to set the second time range determined by the first thumbnail image selected and determined and the first thumbnail image on the left side. .

  In the video data reproduction device, the second time position extraction unit is configured to operate the third cursor key (409) in the operation unit while the reproduction start position selection image is displayed on the screen. Preferably sets the second time range centered on the time position of the first thumbnail image selected and determined.

  Further, in order to solve the above-described problems of the conventional technology, the present invention sets a time position where video data being reproduced in the forward direction or the reverse direction is temporarily stopped as a reference time position, and the video data is moved in the forward direction. When reproducing, the first time range is set in the reverse direction from the reference time position, and when reproducing the video data in the reverse direction, the first time range is set in the forward direction from the reference time position. Each first division time position divided by a predetermined number of divisions is extracted, a first thumbnail image of the video data at each of the first division time positions is generated, and each of the first division time positions is generated. A reproduction start position selection image in which each of the first thumbnail images is arranged at a position corresponding to the time position is generated and displayed on the screen, and two adjacent reproduction start position selection images are displayed. The second time range determined by the time position of the first thumbnail image or the second time range centered on the time position of one of the first thumbnail images in the reproduction start position selection image is set. Extracting each second division time position obtained by dividing the second time range by a predetermined number of divisions, and generating a second thumbnail image of the video data at each of the second division time positions, A reproduction start position detailed selection image in which the second thumbnail images are arranged at positions corresponding to the time positions of the second divided time positions is generated and displayed on the screen, and the reproduction start position detailed selection image is displayed. The video data playback method is characterized in that the playback start position of the video data is selected based on the above.

  Furthermore, in order to solve the above-described problems of the prior art, the present invention sets a time position at which video data being reproduced in the forward or reverse direction is temporarily stopped as a reference time position, and the video data is A function of setting a first time range in the reverse direction from the reference time position when reproducing in the forward direction, and setting the first time range in the forward direction from the reference time position when reproducing the video data in the reverse direction; A function of extracting each first division time position obtained by dividing one time range by a predetermined number of divisions; a function of generating a first thumbnail image of the video data at each of the first division time positions; A reproduction start position selection image in which the first thumbnail images are arranged at positions corresponding to the time positions of the first divided time positions is generated and displayed on the screen. And a second time range determined by the time positions of two adjacent first thumbnail images in the reproduction start position selection image, or one of the first thumbnail images in the reproduction start position selection image. A function of setting the second time range centered on a time position, a function of extracting each second divided time position obtained by dividing the second time range by a predetermined number of divisions, and the second A function of generating a second thumbnail image of the video data at each divided time position, and a reproduction start in which each second thumbnail image is arranged at a position corresponding to each time position of the second divided time position A function for generating a detailed position selection image and displaying it on the screen, and starting playback of the video data based on the detailed playback start position selection image To provide a video data reproducing program for causing and a function for selecting the location.

  According to the video data playback device, video data playback method, and video data playback program of the present invention, it is possible to more reliably and easily extract a desired time position in video data.

It is a block diagram which shows the video data reproduction apparatus of one Embodiment. It is a flowchart which shows the video data reproduction method of 1st Embodiment. It is a flowchart which shows the detailed procedure of step S13, S18 in FIG. It is a flowchart which shows the detailed procedure of step S17, S18 in FIG. It is a conceptual diagram for demonstrating the setting operation | movement of the time range from a reference | standard time position in step S6 in FIG. It is a conceptual diagram for demonstrating the operation | movement which extracts a candidate time position within the time range set in step S6 in FIG. It is a figure which shows the example of the reproduction start position selection image displayed on a screen in 1st Embodiment. It is a figure which shows the state which moved the position of the cursor image from the state shown in FIG. It is a figure which shows the state which selected and confirmed the specific thumbnail image in the reproduction start position selection image. It is a figure which shows the reproduction | regeneration start position selection image which illustrated the concrete time position. FIG. 10 is a diagram illustrating an example of a reproduction start position detail selection image when the right cursor key is pressed from the state of FIG. 9. FIG. 10 is a diagram illustrating an example of a reproduction start position detail selection image when the left cursor key is pressed from the state of FIG. 9. FIG. 10 is a diagram illustrating an example of a reproduction start position detail selection image when the down cursor key is pressed from the state of FIG. 9. It is a figure which shows the example of a concrete series of operation | movement by 1st Embodiment. It is a flowchart which shows the video data reproduction method of 2nd Embodiment. It is a conceptual diagram for demonstrating the setting operation | movement of the time range from a reference | standard time position in step S36 in FIG. FIG. 16 is a conceptual diagram for explaining an operation of extracting candidate time positions within the time range set in step S36 in FIG. It is a figure which shows the example of the reproduction | regeneration start position selection image displayed on a screen in 2nd Embodiment. It is a figure which shows the state which moved the position of the cursor image from the state shown in FIG. 18, and selected and confirmed the specific thumbnail image.

  Hereinafter, embodiments of a video data playback apparatus, a video data playback method, and a video data playback program will be described with reference to the accompanying drawings.

<Video Data Reproducing Device of One Embodiment>
The video data playback apparatus 100 according to an embodiment includes an operation control unit 10 that controls the operation of the video data playback apparatus 100, a data management unit 20 that stores various data such as content data, a display processing unit 30, and the like. Is provided. The video data reproducing apparatus 100 is operated by a remote controller 40 as an example of an operation unit. The video data reproduced by the video data reproduction device 100 is supplied to the video display device 50 and displayed.

  The operation control unit 10 includes an operation input control unit 11, a reproduction operation control unit 12, a time position extraction unit 13, and a thumbnail generation unit 14. The data management unit 20 includes a content data management unit 21 and a cache information management unit 22. The content data management unit 21 stores content data as video data. The display processing unit 30 includes a video data processing unit 31 and a video data transmission unit 32.

  The remote controller 40 has a reproduction key 401 for reproducing the content data stored in the content data management unit 21 and a stop key 402 for stopping the content data being reproduced. Further, the remote controller 40 jumps in the forward direction only for a fixed time such as 30 seconds or 60 seconds, and a fast forward key 403 for fast forwarding the content data being played back, a fast reverse key 404 for fast reverse. And a jump key 405.

  The remote controller 40 includes an enter key 406, a right cursor key 407, a left cursor key 408, a down cursor key 409, and an up cursor key 410. The remote controller 40 may be wireless or wired, and in the case of wireless, either infrared or radio waves may be used. Instead of the remote controller 40, an operation unit provided in the housing of the video data reproducing apparatus 100 may be used.

  In addition, the name (left / right / up / down) indicating the direction of each cursor key is added for the convenience of the following description, and any name may be used as long as the function added to each key can be distinguished. For example, “right” may be replaced with “first”, “left” may be replaced with “second”, “lower” may be replaced with “third”, and “upper” may be replaced with “fourth”.

  When the reproduction key 401 is pressed to reproduce the content data, a remote control signal corresponding to the reproduction key 401 is input to the operation input control unit 11. The operation input control unit 11 instructs the reproduction operation control unit 12 to reproduce the content data stored in the content data management unit 21. The reproduction operation control unit 12 controls the content data management unit 21 to read content data from the content data management unit 21.

  The content data is stored in the content data management unit 21 as compressed data such as MPEG. The content data read from the content data management unit 21 is input to the video data processing unit 31. The video data processing unit 31 includes a decoder that decompresses the compressed data. The video data processing unit 31 decodes the input content data based on the control by the reproduction operation control unit 12.

  The video data sending unit 32 sends the content data decoded by the video data processing unit 31 to the video display device 50 through, for example, a video transmission path of HDMI (High-Definition Multimedia Interface).

  When the stop key 402 is pressed during playback of content data, a remote control signal corresponding to the stop key 402 is input to the operation input control unit 11. The operation input control unit 11 instructs the reproduction operation control unit 12 to stop the content data being reproduced. The playback operation control unit 12 stops reading content data from the content data management unit 21.

  When the fast-forward key 403 is pressed during reproduction of content data, a remote control signal corresponding to the fast-forward key 403 is input to the operation input control unit 11. The operation input control unit 11 instructs the reproduction operation control unit 12 to fast-forward the content data being reproduced at a predetermined double speed. The reproduction operation control unit 12 controls the content data management unit 21 to reproduce the content data stored in the content data management unit 21 by fast-forwarding.

  When the fast reverse key 404 is pressed during reproduction of content data, a remote control signal corresponding to the fast reverse key 404 is input to the operation input control unit 11. The operation input control unit 11 instructs the reproduction operation control unit 12 to quickly rewind the content data being reproduced at a predetermined double speed. The reproduction operation control unit 12 controls the content data management unit 21 so as to reproduce the content data stored in the content data management unit 21 by fast reverse.

  When the jump key 405 is pressed during reproduction of content data, a remote control signal corresponding to the jump key 405 is input to the operation input control unit 11. The operation input control unit 11 instructs the reproduction operation control unit 12 to cause the content data being reproduced to jump forward or backward for a fixed time such as 30 seconds or 60 seconds. If the jump key 405 is pressed during playback of content data in the forward direction, the jump is made in the forward direction. If the jump key 405 is pressed during playback of content data in the reverse direction, the jump is made in the reverse direction.

  The playback operation control unit 12 controls the content data management unit 21 to play back the content data being played back from a time position where the content data is jumped forward or backward for a fixed time.

  When the enter key 406, the right cursor key 407, the left cursor key 408, the down cursor key 409, and the up cursor key 410 are pressed, a remote control signal corresponding to each key is input to the operation input control unit 11. The operations of the operation input control unit 11 and the reproduction operation control unit 12 in this case will be described later.

  When the remote controller 40 performs an operation for extracting a desired time position in the video data, which will be described later, the time position extracting unit 13 follows a command from the operation input control unit 11 to perform a predetermined time of the content data being reproduced. Extract position. The thumbnail generation unit 14 generates a thumbnail image corresponding to the time position extracted by the time position extraction unit 13 based on the content data read from the content data management unit 21.

  Information indicating the time position extracted by the time position extraction unit 13 and the thumbnail image generated by the thumbnail generation unit 14 are stored as cache information in the cache information management unit 22.

  Information indicating the time position and the thumbnail image are input to the video data processing unit 31. Information indicating a time position and a thumbnail image stored in the cache information management unit 22 may be read from the cache information management unit 22 and input to the video data processing unit 31. The video data processing unit 31 superimposes various on-screen data such as thumbnail images, characters or graphics on the content data read and decoded from the content data management unit 21. The video data processing unit 31 includes an on-screen data generation unit.

  The video data sending unit 32 may send content data on which thumbnail images and on-screen data are superimposed to the video display device 50.

  In video data playback apparatus 100 configured as described above, a specific operation for extracting a desired time position in video data being played back in the forward or reverse direction at a predetermined double speed (video data playback method) Will be described in order.

<Video Data Reproducing Method of First Embodiment>
The operation of the video data playback apparatus 100 according to the embodiment described above, and the video data playback method of the first embodiment will be described. The first embodiment described with reference to FIGS. 2 to 11 shows an example in which when the video data is fast-forwarded or fast-rewinded, the time position desired by the user is extracted and shifted to normal playback. . The process of each step in the flowchart shown in FIG.

  In FIG. 2, the operation control unit 10 determines whether or not an n-times high-speed playback instruction has been issued in step S <b> 1 during playback of content data. For example, n is a positive or negative integer having an absolute value of 2 or more. As an example, when the fast-forward key 403 is pressed once, the double-speed and double-speed states are further increased, and when the fast-forward key 403 is further pressed once, the speed is tripled and n increases to the upper limit according to the number of times the fast-forward key 403 is pressed. It shall be. The same applies when the fast reverse key 404 is pressed.

  If there is an instruction for n-times high-speed reproduction (YES), the operation control unit 10 causes n-times high-speed reproduction to be executed in step S2. Since n is initially 2 or -2, the operation control unit 10 reproduces the content data at double speed in the forward direction or the reverse direction. If there is no instruction for n-times high-speed playback (NO), the operation control unit 10 repeats the process of step S1.

  In step S3, the operation control unit 10 determines whether or not there is an instruction to shift to normal reproduction. When the reproduction key 401 is pressed, it is assumed to shift to normal reproduction at 1 × speed. If there is an instruction to shift to normal playback (YES), the operation control unit 10 shifts the process to step S22.

  If there is no instruction to shift to normal reproduction (NO), the operation control unit 10 determines whether or not an operation for selecting a reproduction start position has been performed in step S4. The operation of selecting the reproduction start position is an operation in which the user selects a time position to shift to normal reproduction. In the first embodiment, when the enter key 406 is pressed, the operation shifts to an operation for selecting a reproduction start position.

  If there is no operation for selecting the reproduction start position (NO), the operation control unit 10 returns the process to step S1 so as to repeat steps S1 to S4. As described above, every time the fast-forward key 403 or the fast-rewind key 404 is pressed in step S1, n increases and faster high-speed playback is achieved.

  Hereinafter, an operation when an operation for selecting a reproduction start position is performed will be described. When an operation for selecting the reproduction start position is performed in step S4 (YES), the operation control unit 10 shifts the process to step S5. In step S5, the operation control unit 10 temporarily stops the content data that is being fast-forwarded or fast-reversely played.

  As described above, since the user reproduces the content data at high speed in order to search for the target scene, recognizes that the target scene has been reached, and presses the decision key 406, the content data is usually the target data. Is paused after passing the time position of the scene. In step S6, the time position extraction unit 13 in the operation control unit 10 extracts candidate time positions.

  The extraction of candidate time positions in step S6 will be described with reference to FIGS. The time position in the playback time of the content data paused when the enter key 406 is pressed is t0, the maximum time required for the user to check the scene at the time position to be stopped and pause (hereinafter, the maximum delay time) ) Is D and high-speed playback magnification is n. The maximum delay time D may be appropriately set to 1 to 3 seconds, for example. The user may be allowed to set the maximum delay time D.

  First, as shown in the conceptual diagram of FIG. 5, in the case of fast forward, the time position extraction unit 13 sets a time range TR1 () between a time position t0 and a time position t0-nD before the time position t0. In the case of fast reverse, a time range TR1 (−) between the time position t0 and a time position t0 + nD after the time position t0 is set. The time position t0 is a reference time position when setting the time range TR1 (+) or the time range TR1 (−).

  In the case of fast-forwarding, the time position t0 is a position after the time position that the user originally intended to stop, so the time position that the user originally intended to stop is located within the time range TR1 (+). Similarly, in the case of fast reverse, the time position t0 is a position after the time position that the user originally intended to stop, so the time position that the user originally intended to stop is within the time range TR1 (-). To position.

  Next, the time position extraction unit 13 divides the time range TR1 (+) or the time range TR1 (−) by a predetermined division number x. The division number x is an integer of 2 or more, and is 4 in the first embodiment. The division number x is preferably 3 to 6, and 4 is particularly preferable. The division number x may be set to increase according to the length of the time ranges TR1 (+) and TR1 (−). FIG. 6 shows a state where the time range TR1 (+) is divided by 4 with the division number x.

  Since the operation in the case of fast-forwarding and the case of fast-rewinding are substantially the same, the case where the time range TR1 (+) is set in the case of fast-forwarding will be described below. As shown in FIG. 6, the time range TR1 (+) of time positions t0 to t0-nD is divided into four regions each having a time of nD / 4. The time position t0-nD is the time position tnD10, the time position t0 is the time position tnD14, and the first time positions of the second to fourth areas from the time position tnD10 are tnD11, tnD12, and tnD13, respectively.

  As described above, the time position extraction unit 13 (first time position extraction unit) sets the time position t0 where the video data being reproduced in the forward direction or the reverse direction is temporarily stopped as the reference time position, and sets the video data as the normal time position. When playing back in the direction, the first time range (TR1 (+), TR1 (-)) is set in the reverse direction from the reference time position, and when playing back video data in the reverse direction, the first time range (TR1 (+), TR1 (-)) It is set. The time position extraction unit 13 extracts each first divided time position (tnD11 to tnD13) obtained by dividing the first time range by a predetermined division number x.

  Information indicating the time positions tnD10 to tnD14 extracted by the time position extraction unit 13 is input to the thumbnail generation unit 14. In step S7, the thumbnail generation unit 14 generates a thumbnail image at each of the time positions tnD10 to tnD14. The thumbnail generation unit 14 (first thumbnail generation unit) generates first thumbnail images of video data at both ends of the first time range and at the first division time positions.

  In step S <b> 8, the operation control unit 10 controls the video data processing unit 31 to generate a reproduction start position selection image, and displays the reproduction start position selection image on the screen of the video display device 50. The video data processing unit 31 is a reproduction start position selection image generation unit.

  FIG. 7 shows an example of the reproduction start position selection image Im0 displayed on the screen 50s of the video display device 50. The reproduction start position selection image Im0 includes a bar image Im0b conceptually showing content data in a predetermined time range with a bar extending in the horizontal direction. The time range of the bar image Im0b is a range including the time range TR1 (+). In the example shown in FIG. 7, the bar image Im0b extends to the left side from the time position tnD10 and extends to the right side from the time position tnD14. The time range of the bar image Im0b may be matched with the time range TR1 (+).

  The thumbnail images at the time positions tnD10 to tnD14 generated by the thumbnail generation unit 14 are arranged at positions corresponding to the time positions tnD10 to tnD14 in the reproduction start position selection image Im0, and are displayed as thumbnail images Itn10 to Itn14.

  In the example shown in FIG. 7, “temporary stop position” is displayed at the time position t0 of the content data paused by pressing the enter key 406. By displaying “pause position”, the user can easily understand at which time position the pause is made. In the initial state where the reproduction start position selection image Im0 is displayed on the screen 50s, the cursor image Icur is at the position of the thumbnail image Itn14, which is the pause position, and the thumbnail image Itn14 is selected.

  The content data is displayed on the screen 50s as a still image in the same state as the thumbnail image Itn14, and the reproduction start position selection image Im0 is superimposed on the still image.

  FIG. 8 shows a state in which the cursor image Icur is moved to the thumbnail image Itn12 by pressing the right cursor key 407 or the left cursor key 408 of the remote controller 40 in step S12 described later. By pressing the right cursor key 407 or the left cursor key 408, the cursor image Icur can be moved to any position of the thumbnail images Itn10 to Itn14.

  Returning to FIG. 2, the operation control unit 10 determines in step S <b> 9 whether there is an instruction for normal reproduction. When the enter key 406 is pressed while the thumbnail image Itn12 is selected as shown in FIG. 8, the selected thumbnail image is in a so-called focused state, as shown in FIG. It is said. Here, the operation control unit 10 controls the video data processing unit 31 so as to superimpose, for example, a frame image Ifm indicating a selection confirmation state.

  As shown in FIG. 9, when the reproduction key 401 is pressed with the selection confirmed (YES), the operation control unit 10 shifts to normal reproduction from the selected thumbnail image in step S22. If the reproduction key 401 is not pressed (NO), the operation control unit 10 shifts the process to step S10.

  In step S9, the thumbnail image is simply selected as shown in FIGS. 7 and 8, and even if the selection key 406 does not determine the selection, the reproduction key 401 is pressed to shift to normal reproduction. It may be.

  In step S10, the operation control unit 10 determines whether or not a preview reproduction instruction has been issued. If the determination key 406 is pressed while any one of the thumbnail images Itn10 to Itn14 is confirmed as shown in FIG. 9, the operation control unit 10 determines that an instruction for preview reproduction has been given.

  If there is no preview reproduction instruction (NO), the operation control unit 10 determines whether or not the cursor image Icur has been moved by pressing the right cursor key 407 or the left cursor key 408 in step S11. If there is an operation for moving the cursor image Icur (YES), the operation control unit 10 moves the cursor image Icur in step S12 and shifts the processing to step S9. If there is no movement operation of the cursor image Icur (NO), the operation control unit 10 shifts the process to step S13.

  In step S <b> 13, the operation control unit 10 determines whether or not there is an instruction to shift to the reproduction start position detailed selection image. If there is no instruction to shift to the reproduction start position detail selection image (NO), the operation control unit 10 returns the process to step S9, and if there is a shift instruction (YES), shifts the process to step S18. The reproduction start position detail selection image will be described later.

  FIG. 10 shows that the maximum delay time D is 2 seconds, the high speed reproduction magnification (double speed number) n is 40, the time range TR1 (+) is 80 seconds, the division number x is 4, and the time position t0 is 30 minutes 00 seconds ( 30:00), an example of a specific reproduction start position selection image Im0 is shown. Thumbnail images Itn10 to Itn14 are displayed at the time positions of 28:40, 29:00, 29:20, 29:40, and 30:00.

  Thumbnail images Itn10 to Itn14 in FIG. 10 are images different from those in FIG. 9, and the cursor image Itur is moved to the thumbnail image Itn11 to indicate selection.

  As shown in FIG. 9 and FIG. 10, if any one of the thumbnail images Itn10 to Itn14 is selected and pressed and the reproduction key 401 is pressed, the normal reproduction can be started, and if the decision key 406 is pressed, the preview reproduction is performed. And can be migrated.

  If there is an instruction for preview reproduction in step S10 (YES), operation controller 10 causes preview reproduction to be executed in step S14. For example, in FIG. 10, when the determination key 406 is pressed while the thumbnail image Itn11 is selected and the preview reproduction is instructed, the operation control unit 10 performs preview reproduction of video data after the thumbnail image Itn11. . At this time, the reproduction start position selection image Im0 may be erased and the video data after the thumbnail image Itn11 may be reproduced as a sub-screen, or the video data after the thumbnail image Itn11 may be reproduced on the full screen.

  In step S15, the operation control unit 10 determines whether or not a predetermined time has elapsed. The predetermined time is, for example, 5 to 10 seconds. If the predetermined time has elapsed (YES), the operation control unit 10 shifts the process to step S22. If the predetermined time has not elapsed (NO), the operation control unit 10 determines in step S16 whether or not there is an instruction to shift to normal reproduction. If the playback key 401 is pressed during preview playback, the operation control unit 10 determines that there is an instruction to shift to normal playback (YES), and shifts the processing to step S22.

  Step S16 can be omitted. In particular, when preview playback is playback in full screen display, step S16 may be omitted because it does not appear to be different from normal playback.

  If there is no instruction to shift to normal reproduction (NO), the operation control unit 10 determines whether or not there is an instruction to shift to the reproduction start position detailed selection image in step S17. If there is no instruction to shift to the reproduction start position detail selection image (NO), the operation control unit 10 returns the process to step S15.

  The reproduction start position detailed selection image in steps S13 and S17 is an image obtained by subdividing the reproduction start position selection image Im0 shown in FIGS. 9 and 10 into thumbnail images at finer time positions.

  If there is an instruction to shift to the reproduction start position detail selection image (YES), the operation control unit 10 controls the video data processing unit 31 to generate a reproduction start position detail selection image in step S18, and the video display device. The reproduction start position detailed selection image is displayed on the 50 screen 50s. The video data processing unit 31 is a reproduction start position detail selection image generation unit.

  First, the details of step S13 and step S18, which are cases where the state of FIGS. 7 and 8 is shifted to the reproduction start position detailed selection image without executing preview reproduction, will be described with reference to FIG. As shown in FIG. 3, step S13 specifically includes four steps, steps S131 to S134, and step S18 specifically includes steps S181 to S189.

  In step S131, the operation control unit 10 determines whether or not an operation for confirming selection has been performed by pressing the enter key 406. If there is no selection confirmation operation (NO), the operation control unit 10 returns the process to step S9 in FIG. If there is an operation for confirming the selection (YES), the operation control unit 10 determines whether or not the right cursor key 407 is pressed in step S132. When the selection confirmation operation is performed, the state shown in FIGS. 9 and 10 is obtained. If the right cursor key 407 is pressed (YES), the operation control unit 10 shifts the process to step S181.

  If the right cursor key 407 is not pressed (NO), the operation control unit 10 determines whether or not the left cursor key 408 is pressed in step S133. If left cursor key 408 is pressed (YES), operation control unit 10 causes the process to proceed to step S184.

  If the left cursor key 408 is not pressed (NO), the operation control unit 10 determines whether or not the down cursor key 409 is pressed in step S134. If the down cursor key 409 is pressed (YES), the operation control unit 10 shifts the process to step S187. If the down cursor key 409 is not pressed (NO), the operation control unit 10 returns the process to step S9 in FIG.

  Next, the details of step S17 and step S18, which is a case of shifting to the reproduction start position detail selection image in a state where preview reproduction is being executed, will be described using FIG. As shown in FIG. 4, step S17 specifically includes three steps of steps S171 to S173. In FIG. 4, the details of the same step S18 as in FIG. 3 are also shown for easy understanding.

  In step S171, the operation control unit 10 determines whether the right cursor key 407 has been pressed. If the right cursor key 407 is pressed (YES), the operation control unit 10 shifts the process to step S181. If the right cursor key 407 is not pressed (NO), the operation control unit 10 determines whether or not the left cursor key 408 is pressed in step S172. If left cursor key 408 is pressed (YES), operation control unit 10 causes the process to proceed to step S184.

  If the left cursor key 408 has not been pressed (NO), the operation control unit 10 determines whether or not the down cursor key 409 has been pressed in step S173. If the down cursor key 409 is pressed (YES), the operation control unit 10 shifts the process to step S187. If the down cursor key 409 is not pressed (NO), the operation control unit 10 returns the process to step S15 in FIG.

  Each playback start position detail selection image when the right cursor key 407, the left cursor key 408, and the lower cursor key 409 are pressed in the state of FIG. 9 or the state in which preview playback is executed from the state of FIG. Will be described.

When the right cursor key 407 is pressed, the operation control unit 10, screen playback start position details selected image Im1 _R as shown in FIG. 11 was subdivided between the thumbnail images Itn12 and right of the thumbnail images Itn13 50s To display. The reproduction start position detail selection image Im1 _R is a reproduction start position detail selection image in the positive direction with respect to the thumbnail image Itn12 selected in FIG.

The reproduction start position detail selection image Im1 _R is generated by the procedure shown in steps S181 to S183 in FIGS. 3 and 4 and displayed on the screen 50s. The thumbnail image Itn12 is a thumbnail image at the time position tnD12, and the thumbnail image Itn13 is a thumbnail image at the time position tnD13. The time range TR2 of the time positions tnD12 to tnD13 is nD / 4. In step S181, the time position extraction unit 13 in the operation control unit 10 extracts candidate time positions divided by 4 with the time range TR2 as the division number x.

  Here, the number of divisions x in step S181 is set to 4, which is the same as the number of divisions x in step S6, but they may be different numbers.

As shown in FIG. 11, the time range TR2 of the time positions tnD12 to tnD13 is divided into four regions each having a time of nD / 4 ² . The first time positions of the second to fourth areas from the time position tnD12 are set to tnD231, tnD232, and tnD233, respectively.

  In step S182, the thumbnail generation unit 14 generates thumbnail images at time positions tnD12, tnD231 to tnD233, tnD13, or reads them from the cache information management unit 22. Since the thumbnail images at the time position tnD12 and the time position tnD13 are stored in the cache information management unit 22, the thumbnail generation unit 14 may read the thumbnail images from the cache information management unit 22.

The operation control unit 10, at step S183, and controls to create a Im1 _R time plus direction playback start position details selected image by the image data processing unit 31, the image display device 50 of the screen 50s to the playback start position details selected image Im1 _R is displayed.

As shown in FIG. 11, the reproduction start position detailed selection image Im1 _R includes a bar image Im1b similar to the bar image Im0b of the reproduction start position selection image Im0. Thumbnail generating unit 14 is generated or read time position tnD12, tnD231~tnD233, tnD13 each thumbnail image, the playback start position details selected image Im1 time position of _{R tnD12, tnD231~tnD233,} is arranged at positions corresponding to TnD13, Thumbnail images Itn12, Itn231, Itn232, Itn233, Itn13 are displayed.

  11 and FIGS. 12 and 13 described later include information that is not actually displayed on the screen 50s in order to facilitate understanding. Of course, all the information shown in FIGS. 11 to 13 may be displayed on the screen 50s.

When the left cursor key 408 is pressed, the operation control unit 10 displays the reproduction start position detailed selection image Im1 _L as shown in FIG. 12 in which the thumbnail image Itn12 and the thumbnail image Itn11 on the left are subdivided on the screen 50s. To display. The reproduction start position detail selection image Im1 _L is a reproduction start position detail selection image in the negative direction with respect to the thumbnail image Itn12 selected in FIG.

The reproduction start position detail selection image Im1 _L is generated by the procedure shown in steps S184 to S186 and displayed on the screen 50s. The thumbnail image Itn11 is a thumbnail image at the time position tnD11, and the thumbnail image Itn12 is a thumbnail image at the time position tnD12. In step S184, the time position extraction unit 13 in the operation control unit 10 extracts candidate time positions obtained by dividing the time range TR2 of the time positions tnD11 to tnD12 by 4. As shown in FIG. 12, the time range TR2 is divided into four regions each having a time of nD / 4 ² .

  In FIG. 12, the first time positions of the second to fourth areas from the time position tnD11 are tnD121, tnD122, and tnD123, respectively.

In step S185, the thumbnail generation unit 14 generates thumbnail images at time positions tnD11, tnD121 to tnD123, tnD12, or reads them from the cache information management unit 22. In step S 186, the operation control unit 10 controls the video data processing unit 31 to generate the reproduction start position detailed selection image Im 1 _L in the time minus direction, and displays the reproduction start position detailed selection image on the screen 50 s of the video display device 50. Im1 _L is displayed.

As shown in FIG. 12, the thumbnail generating unit 14 is generated or read time position tnD11, tnD121~tnD123, tnD12 each thumbnail image, the playback start position details selected image Im1 _L time positions tnD11, tnD121~tnD123, corresponding TnD12 The thumbnail images Itn11, Itn121, Itn122, Itn123, Itn12 are displayed.

When the down cursor key 409 is pressed, the operation control unit 10 displays a reproduction start position detailed selection image Im1 _D as shown in FIG. It is displayed on the screen 50s. Playback start position details selected image Im1 _D is the playback start position details selected image near around the thumbnail images Itn12 which has been selected in FIG.

Playback start position details selected image Im1 _D is displayed is generated in the procedure shown in step S187~S189 the screen 50s. The thumbnail image Itn12 is a thumbnail image at the time position tnD12. In the reproduction start position details selected image Im1 _D is the time range TR2 of nD / 4 around the time position tnD12 is set. In step S187, the time position extraction unit 13 in the operation control unit 10 extracts candidate time positions obtained by dividing the interval range TR2 by 4. Time range TR2 is divided into four regions each having a time of nD / 4 ² .

  In FIG. 13, the beginning of the third area is the time position tnD12, the beginning time positions of the first, second, and fourth areas are tnD12L2, tnD12L1, and tnD12R1, respectively. tnD12R2.

In step S188, the thumbnail generation unit 14 generates thumbnail images at the time positions tnD12L2, tnD12L1, tnD12, tnD12R1, and tnD12R2, or reads them from the cache information management unit 22. The operation control unit 10, at step S189, and controls to create a playback start position details selected image Im1 _D near the center by the video data processor unit 31, the image display device 50 of the screen 50s to the playback start position details selected image Im1 _D is displayed.

As shown in FIG. 13, the thumbnail images of the time positions tnD12L2, tnD12L1, tnD12, tnD12R1, and tnD12R2 generated or read by the thumbnail generation unit 14 are the time positions tnD12L2, tnD12L1, tnD12, and the reproduction start position detail selection image Im1 _D It is arranged at a position corresponding to tnD12R1, tnD12R2, and is displayed as thumbnail images Itn12L2, Itn12L1, Itn12, Itn12R1, Itn12R2.

The reproduction start position detailed selection images Im1 _R , Im1 _L , and Im1 _D shown in FIGS. 11 to 13 are collectively referred to as a reproduction start position detailed selection image Im1.

  The time position extraction unit 13 (second time position extraction unit) is a second time range (TR2) determined by the time positions of two adjacent first thumbnail images in the reproduction start position selection image Im1, or the reproduction start. A second time range (TR2) centering on the time position of one first thumbnail image in the position selection image Im1 is set. The time position extraction unit 13 divides the second time range by a predetermined division number x (second time division positions (tnD231 to tnD233 in FIG. 11, tnD121 to tnD123 in FIG. 12, tnD12L1, tnD12R1 in FIG. 13). ) Is extracted.

  The thumbnail generation unit 14 (second thumbnail generation unit) generates a second thumbnail image of the video data at both ends of the second time range and the second divided time position.

  By the way, when the display is shifted to the reproduction start position detailed selection image Im1 while the preview reproduction is being executed, the position of the cursor image Icur displayed in the initial state on the reproduction start position detailed selection image Im1 is as follows. It is preferable to do. The cursor image Icur is displayed on the thumbnail image at the time position before the timing at which the preview reproduction is interrupted by pressing the right cursor key 407, the left cursor key 408, and the down cursor key 409, at the time position closest to the timing.

  In this way, it is possible to improve the operability of selecting the reproduction start position after shifting to the reproduction start position detail selection image Im1.

  Returning to FIG. 2, the operation control unit 10 determines whether or not a return operation has been performed in step S19 in a state where any one of the reproduction start position detailed selection images Im1 shown in FIGS. 11 to 13 is displayed on the screen 50s. Determine whether. In the first embodiment, the up cursor key 410 is used as a return operation key. If the up cursor key 410 is pressed, the operation control unit 10 shifts the process to step S20. If the up cursor key 410 is not pressed, the operation control unit 10 returns the process to step S9.

  As can be seen from FIG. 2, when the process returns to step S9, steps S9 to S18 described above can be repeated again. Therefore, in the first embodiment, the reproduction start position detailed selection image obtained by subdividing the reproduction start position detailed selection images Im1 shown in FIGS. 11 to 13 into thumbnail images at finer time positions is displayed on the screen 50s. Can do.

If the reproduction start position detail selection image Im1 is the first hierarchy reproduction start position detail selection image, the reproduction start position detail selection image obtained by subdividing the reproduction start position detail selection image Im1 is the second hierarchy. In the reproduction start position detailed selection image of the second hierarchy, the time range of nD / 4 ² in FIGS. 11 to 13 is divided into four areas, and the time ranges of nD / 4 ² are set at the three time positions at both ends and in the middle. A thumbnail image will be displayed.

  Although not particularly shown in FIG. 2, what level of the reproduction start position detail selection image is displayed may be set as appropriate in consideration of the details that can be refined. Further, the final hierarchy may be fixed like the second hierarchy or the third hierarchy.

  If the up cursor key 410 is pressed, the operation control unit 10 determines in step S20 whether or not the reproduction start position detailed selection image currently displayed is the first layer. If the reproduction start position detail selection image is the first hierarchy, the operation control unit 10 returns the process to step S8 to display the reproduction start position selection image Im0 as shown in FIGS. If the reproduction start position detail selection image is not the first hierarchy, the operation control unit 10 returns to the reproduction start position detail selection image one level higher in step S21, and returns the process to step S9.

  In step S22, the operation control unit 10 normally reproduces the content data. In step S <b> 23, the operation control unit 10 determines whether or not a reproduction stop operation has been performed by pressing the stop key 402. If the reproduction stop operation is not performed (NO), the operation control unit 10 repeats normal reproduction of the content data in step S22. If the reproduction stop operation is performed (YES), the operation control unit 10 stops the reproduction of the content data and ends in step S24.

  An example of a specific series of operations according to the first embodiment described above will be described with reference to FIG. In FIG. 14, (a) shows the same reproduction start position selection image Im0 as in FIG. FIG. 14A shows a state in which the frame shown in FIG. 10 is omitted and the reproduction start position selection image Im0 is simplified.

In the reproduction start position selection image Im0 shown in (a) of FIG. 14, the right cursor key 407 is pressed while the thumbnail image at the time position 29:00 is selected and confirmed, or from the state of (a) of FIG. When the right cursor key 407 is pressed in a state where preview reproduction is being performed, a reproduction start position detailed selection image Im1 _{R of} the first hierarchy shown in FIG. 11B is obtained. FIG. 11B also shows a state in which the frame is omitted and the reproduction start position detailed selection image Im1 _R is simplified.

In the reproduction start position detailed selection image Im1 _R , the time between the time position 29:00 and the time position 29:20 is subdivided. Thumbnail images are displayed at 29:00, 29:05, 29:10, 29:15, and 29:20.

In the reproduction start position detailed selection image Im1 _R shown in FIG. 14B, the down cursor key 409 is pressed while the thumbnail image at the time position 29:10 is selected and confirmed, or as shown in FIG. 14B. in a state where the state running preview reproduction, the down cursor key 409 is pressed, the playback start position details selected image Im2 _D of the second hierarchy shown in FIG. 14 (c).

Playback start position details selected image Im2 _D includes bar image Im2b. But (c) of FIG. 14 shows a state in which by omitting the frame to simplify the reproduction start position details selected image Im2 _D was. Playback start position in detail selected image Im2 _D, the time before and after the time position 29:10 is subdivided. Thumbnail images are displayed at the time positions of 29:07, 29:08, 29:10, 29:11, and 29:12. Here, the decimal places in the time position are not displayed, and 29:07, 29:08, 29:10, 29:11, and 29:12 are actually equal time intervals.

  As described above, according to the first embodiment, when video data is fast-forwarded or fast-rewinded, it is possible to more easily and easily extract the time position at which the user wants to shift to normal playback.

<Video Data Reproducing Method of Second Embodiment>
The video data playback method according to the second embodiment, which is an operation performed by the video data playback apparatus 100 according to the above-described embodiment, will be described. In the second embodiment described with reference to FIGS. 15 to 19, when jump playback is performed in which video data is jumped for a fixed time such as 30 seconds or 60 seconds at a time and then the normal playback at 1 × speed is performed. In the example, normal playback is performed after the start position of normal playback is moved to a time position desired by the user. The processing of each step in the flowchart shown in FIG.

  In the description of the second embodiment, descriptions of common parts with the first embodiment will be omitted as appropriate, and differences will be mainly described.

  In FIG. 15, the operation control unit 10 determines whether or not a m-second jump has been instructed by pressing the jump key 405 in step S31 during normal playback of content data. m seconds are 30 seconds, 60 seconds, and the like. A single press of the jump key 405 results in a 30 second jump. If the jump key 405 is pressed twice in succession, it will jump 60 seconds. If it is pressed continuously, it will jump 90 seconds. If it is pressed, a jump of 120 seconds may be performed.

  If there is a m-second jump instruction (YES), the operation control unit 10 causes preview playback to be executed from the position where the m-second jump has occurred in step S32. If there is no m-second jump instruction (NO), the operation control unit 10 repeats the process of step S31.

  The operation control unit 10 determines whether or not a predetermined time has elapsed in step S33. If the predetermined time has elapsed (YES), the operation control unit 10 shifts the process to step S52. If the predetermined time has not elapsed (NO), the operation control unit 10 determines in step S34 whether or not an operation for selecting a reproduction start position has been performed. Also in the second embodiment, when the enter key 406 is pressed, the operation shifts to an operation for selecting a reproduction start position.

  If there is no operation for selecting the reproduction start position (NO), the operation control unit 10 returns the process to step S32 so as to repeat steps S32 to S34.

  When an operation for selecting the reproduction start position is performed in step S34 (YES), the operation control unit 10 temporarily stops the content data being reproduced in step S35. In step S36, the time position extraction unit 13 in the operation control unit 10 extracts candidate time positions.

  The extraction of candidate time positions in step S36 will be described with reference to FIGS. Let t0 be the time position in the playback time of the content data paused by pressing the enter key 406. As shown in the conceptual diagram of FIG. 16, the time position extraction unit 13, in the case of the m-second jump when playing in the forward direction, the time position t 0 and the time position t 0-before the time position t 0- Set the time range TJ1 (+) between m.

  As shown in the conceptual diagram of FIG. 16, the time position extraction unit 13 performs the time position t0 and the time position t0 + after the time position t0 in the case of the m-second jump when playing in the reverse direction. Set the time range TJ1 (-) between m. Thus, the time ranges TJ1 (+) and TJ1 (-) are times corresponding to the value of m of the m-second jump.

  When the jump is performed for m seconds during playback in the forward direction, the time position where the user originally wants to start playback is located within the time range TJ1 (+). When jumping for m seconds during playback in the reverse direction, the time position at which the user originally wants to start playback is located within the time range TJ1 (−).

  Next, the time position extraction unit 13 divides the time range TJ1 (+) or the time range TJ1 (−) by a predetermined division number x. Also in the second embodiment, the division number x is four. Hereinafter, a case where the time range TJ1 (+) is set in the case of the m-second jump when playing in the forward direction will be described.

  As shown in FIG. 17, the time range TJ1 (+) of the time positions t0 to t0-m is divided into four regions each having a time of m / 4. The time position t0-m is the time position tJ10, the time position t0 is the time position tJ14, and the first time positions of the second to fourth areas from the time position tJ10 are tJ11, tJ12, and tJ13, respectively.

  Information indicating the time positions tJ10 to tJ14 extracted by the time position extraction unit 13 is input to the thumbnail generation unit 14. In step S37, the thumbnail generation unit 14 generates a thumbnail image at each of the time positions tJ10 to tJ14. In step S38, the operation control unit 10 controls the video data processing unit 31 to create a reproduction start position selection image, and displays the reproduction start position selection image on the screen 50s of the video display device 50.

  FIG. 18 shows an example of the reproduction start position selection image Im20 displayed on the screen 50s of the video display device 50. FIG. 18 shows an example in which the time position t0 is 30:00 and m of the m-second jump is 60 seconds. The reproduction start position selection image Im20 includes a bar image Im20b that conceptually shows content data in a predetermined time range as a bar extending in the horizontal direction. The time range of the bar image Im20b is a range including the time range TJ1 (+).

  The thumbnail images generated by the thumbnail generation unit 14 at 29:00, 29:15, 29:30, 29:45, and 30:00 time positions correspond to the respective time positions in the reproduction start position selection image Im20. The thumbnail images Itn20, Itn21, Itn22, Itn23 and Itn24 are displayed at the positions.

  When the reproduction start position selection image Im20 as shown in FIG. 18 is displayed in step S38, the operation control unit 10 shifts the process to step S39. Steps S39 to S54 in FIG. 15 are substantially the same as steps S9 to S24 in FIG.

  FIG. 19 shows the cursor image Icur from the state of FIG. 18 in order to shift to normal playback in step S39, to perform preview playback in step S40, and to shift to the playback start position detailed selection image in step S43. Is moved to the thumbnail image Itn21, and the selection confirmation state is shown in which the frame image Ifm is superimposed by pressing the enter key 406.

  The transition from the reproduction start position selection image Im20 to the reproduction start position detail selection image will be described. In the second embodiment, as in the first embodiment, when any of the right cursor key 407, the left cursor key 408, and the down cursor key 409 is pressed in step S43 from the state of FIG. In step S48, the unit 10 shifts to the reproduction start position detailed selection images corresponding to the right cursor key 407, the left cursor key 408, and the lower cursor key 409, respectively.

  According to the second embodiment, when the video data is played back in the forward direction or the backward direction and is subsequently played back after jumping for a fixed time, even if the user has exceeded the desired time position, the playback position Video data can be reproduced after correcting the above. Also in the second embodiment, the reproduction time position desired by the user can be extracted more reliably and easily.

<Video Data Reproducing Method of Third Embodiment>
The video data playback method according to the third embodiment, which is an operation performed by the video data playback apparatus 100 according to the above-described embodiment, will be described. In the first and second embodiments, an example is shown in which a time position at which normal playback desired by the user is extracted is extracted, the playback start position is corrected to the extracted time position, and normal playback is started. The method for extracting a specific time position by a series of operations described in FIG. 14 can be used not only for reproduction when viewing content data but also for reproduction when editing content data. is there.

  In content data editing work, for example, the first frame and the last frame of the time range to be deleted may be designated for partial deletion of content data. In some cases, the first frame and the last frame of the remaining time range in the content data are designated. In these cases, the content data is reproduced in the forward direction or the reverse direction at a predetermined double speed including the single speed to search for a time range to be deleted or a time range to be left.

  The method for extracting a specific time position described in detail in the first embodiment can also be used when, for example, a frame at a specific time position of content data is designated during editing of content data.

  The present invention is not limited to the first to third embodiments described above, and various modifications can be made without departing from the scope of the present invention. In FIG. 1, the operation control unit 10 is configured by hardware, but the operation control unit 10 may be configured by software based on a computer program.

  In this case, a video data reproduction program for executing processing equivalent to that in the first to third embodiments may be stored in a storage medium, and the video data reproduction program may be operated by a microcomputer. The storage medium for storing the video data reproduction program may be built in the operation control unit 10 or provided outside. The video data reproduction program may be installed in a storage medium via a network.

  Although FIG. 1 shows an example in which the video display device 50 and the video data reproduction device 100 are separate, the video display device 50 and the video data reproduction device 100 may be integrated. The video data reproducing apparatus 100 has a video data recording function and may be a video data recording / reproducing apparatus.

DESCRIPTION OF SYMBOLS 10 Operation control part 11 Operation input control part 12 Playback operation control part 13 Time position extraction part 14 Thumbnail generation part 20 Data management part 21 Content data management part 22 Cache information management part 30 Display processing part 31 Video data processing part (Reproduction start position) Selection image generation unit, playback start position detail selection image generation unit)
32 Video data transmission unit 40 Remote controller 50 Video display device 100 Video data playback device

Claims (6)

The time position at which video data being reproduced in the forward direction or the reverse direction is temporarily stopped is set as a reference time position. When the video data is being reproduced in the forward direction, the video data is moved in the reverse direction from the reference time position. When playing back in the reverse direction, a first time range is set in the forward direction from the reference time position, and each first divided time position obtained by dividing the first time range by a predetermined number of divisions is extracted. A first time position extraction unit;
A first thumbnail generator for generating a first thumbnail image of the video data at each of the first division time positions;
A reproduction start position selection image generation unit that generates a reproduction start position selection image in which each of the first thumbnail images is arranged at a position corresponding to each time position of the first divided time position;
The second time range determined by the time positions of two adjacent first thumbnail images in the reproduction start position selection image, or the time position of one first thumbnail image in the reproduction start position selection image is the center. A second time position extracting unit that extracts the second divided time positions obtained by dividing the second time range by a predetermined number of divisions,
A second thumbnail generator for generating a second thumbnail image of the video data at each of the second division time positions;
A reproduction start position detail selection image generation unit that generates a reproduction start position detail selection image in which each of the second thumbnail images is arranged at a position corresponding to each time position of the second divided time position;
A video data reproducing apparatus comprising:   2. The video data reproducing apparatus according to claim 1, wherein the first time position extracting unit sets the first time range to be longer as the speed of reproduction of the video data is larger. The second time position extraction unit includes:
When the first cursor key in the operation unit is operated in a state where the reproduction start position selection image is displayed on the screen, the first thumbnail image selected and determined and the first thumbnail image adjacent to the right are selected. Set the second time range determined by
When the second cursor key in the operation unit is operated in a state where the reproduction start position selection image is displayed on the screen, the first thumbnail image selected on the left side and the first thumbnail on the left are selected. The video data reproducing apparatus according to claim 1, wherein the second time range determined by an image is set.   When the third cursor key in the operation unit is operated in a state where the reproduction start position selection image is displayed on the screen, the second time position extraction unit selects the determined first thumbnail. 4. The video data reproducing apparatus according to claim 3, wherein the second time range centering on the time position of the image is set. The time position at which video data being reproduced in the forward direction or the reverse direction is temporarily stopped is set as a reference time position. When the video data is being reproduced in the forward direction, the video data is moved in the reverse direction from the reference time position. When playing in the reverse direction, set the first time range in the forward direction from the reference time position,
Extracting each first divided time position obtained by dividing the first time range by a predetermined number of divisions;
Generating a first thumbnail image of the video data at each of the first division time positions;
Generating a reproduction start position selection image in which each of the first thumbnail images is arranged at a position corresponding to the time position of each of the first divided time positions, and displaying it on the screen;
The second time range determined by the time positions of two adjacent first thumbnail images in the reproduction start position selection image, or the time position of one first thumbnail image in the reproduction start position selection image is the center. Set the second time range as
Extracting each second divided time position obtained by dividing the second time range by a predetermined number of divisions;
Generating a second thumbnail image of the video data at each of the second division time positions;
Generating a reproduction start position detail selection image in which the second thumbnail images are arranged at positions corresponding to the time positions of the second divided time positions, and displaying the selected images on the screen;
A video data playback method, comprising: selecting a playback start position of the video data based on the playback start position detail selection image. On the computer,
The time position at which video data being reproduced in the forward direction or the reverse direction is temporarily stopped is set as a reference time position. When the video data is being reproduced in the forward direction, the video data is moved in the reverse direction from the reference time position. A function of setting the first time range in the forward direction from the reference time position when playing in the reverse direction;
A function of extracting each first divided time position obtained by dividing the first time range by a predetermined number of divisions;
A function of generating a first thumbnail image of the video data at each of the first division time positions;
A function of generating a reproduction start position selection image in which each of the first thumbnail images is arranged at a position corresponding to the time position of each of the first divided time positions and displaying the selected image on the screen;
The second time range determined by the time positions of two adjacent first thumbnail images in the reproduction start position selection image, or the time position of one first thumbnail image in the reproduction start position selection image is the center. A function for setting the second time range as
A function of extracting each second divided time position obtained by dividing the second time range by a predetermined number of divisions;
A function of generating a second thumbnail image of the video data at each of the second division time positions;
A function of generating a reproduction start position detailed selection image in which each of the second thumbnail images is arranged at a position corresponding to a time position of each of the second divided time positions and displaying the selected image on the screen;
A function of selecting a reproduction start position of the video data based on the reproduction start position detail selection image;
A video data reproduction program characterized by realizing the above.

Images