JP2008167013A - Playback apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a playback apparatus capable of more easily selecting a desired playback start position and starting a playback. <P>SOLUTION: In a DVD player 100, an input means makes a user input optional time information to skip from a present processing position on the basis of a key operation in a key operation part 21, a selection means selects specified frame data at a position equivalent to the input optional time information and also selects two or more pieces of frame data present within a prescribed range before and/or after the specified frame data, a display control means converts the selected specified frame data and two or more pieces of frame data to thumbnail images and lists and displays them at a display part, a specifying means makes a user specify one thumbnail image from the listed and displayed thumbnail images, and a playback means performs playback with the frame data corresponding to the one specified thumbnail image as the playback start position. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a playback apparatus that plays back image data recorded on an information recording medium.

Conventionally, a reproducing apparatus for reproducing an information recording medium on which image data is recorded is known.
For example, in Patent Document 1, during fast-forward and rewind playback, a playback image is left as an index image at a certain interval in the moving image display unit, and normal playback is started from a playback position corresponding to the specified index image. There has been disclosed a moving image playback apparatus that allows a user to specify a playback start position more accurately.
Also, for example, in Patent Document 2, a moving image index in which a moving image file is divided equally, a combined frame is generated by combining the divided moving image data, which is a set of divided frames, and is combined. A moving image management method has been proposed in which the content of the entire moving image can be quickly grasped and the moving image scene to be edited can be accurately found before editing the moving image by creating and reproducing the image.
In Patent Document 3, the reduced image displayed on the list image display unit makes it easy to grasp the contents of the video and search for a desired frame, and a desired reduced image can be obtained from the reduced image on the list image display unit. There has been disclosed a video recording / reproducing apparatus that, when selected, skips an address being viewed to an address indicated by the reduced image, thereby enabling quick reproduction by skipping to a desired frame.
JP 2005-277803 A JP 2005-86344 A JP 2000-125243 A

  However, when it is desired to perform playback while skipping from the current processing position, there are cases where the user knows or predicts in advance the time required for playback to the position where the user wants to skip. In such a case, in the method of specifying the playback start position by the index image generated while performing fast-forward playback as in Patent Document 1, it takes time to reach the target playback start position by fast-forward playback. There was a problem that it took. There is also a technique for performing fast-forward playback at a high speed. However, when fast-forward playback is performed at a high speed, it often takes time, such as rewinding without stopping at the target position. Further, as in Patent Document 2 or Patent Document 3 described above, searching and selecting the frame data to be selected from the index images created from the entire moving image file takes time and effort to search for the target index image. There was a problem that.

  An object of the present invention is to provide a playback device that can easily select a desired playback start position and start playback.

In order to solve the above-mentioned problem, the invention according to claim 1 is a playback apparatus for playing back image data recorded on an information recording medium.
A key operation unit that accepts user key operations;
An input unit that allows the user to input arbitrary time information to be skipped from the current processing position in the information recording medium based on a key operation in the key operation unit;
Based on the key operation in the key operation unit, a plurality of frame data existing within a predetermined range before and / or after the specific frame data at the position corresponding to the arbitrary time information input by the input means Frame interval selection means for allowing a user to select a frame interval when selecting the frame data from a fixed interval or an interval that gradually expands from the specific frame data; and
The specific frame data at a position corresponding to the arbitrary time information inputted by the input means is selected from the image data recorded on the information recording medium, and the frame interval selected by the frame interval selection means A selection means for selecting a plurality of frame data existing within a predetermined range before and / or after the specific frame data,
Display control means for converting the specific frame data and the plurality of frame data selected by the selection means into thumbnail images and displaying a list on a display unit;
Designation means for allowing a user to designate one thumbnail image from among the thumbnail images displayed in a list on the display section by the display control means based on a key operation in the key operation section;
Reproduction means for performing reproduction with the frame data corresponding to the one thumbnail image designated by the designation means as a reproduction start position;
It is characterized by providing.

According to a second aspect of the present invention, there is provided a playback apparatus for playing back image data recorded on an information recording medium.
A key operation unit that accepts user key operations;
An input unit that allows the user to input arbitrary time information to be skipped from the current processing position in the information recording medium based on a key operation in the key operation unit;
A specific frame data at a position corresponding to the arbitrary time information input by the input means is selected from the image data recorded on the information recording medium, and a predetermined frame before and / or after the specific frame data is selected. A selection means for selecting a plurality of frame data existing within the range;
Display control means for converting the specific frame data and the plurality of frame data selected by the selection means into thumbnail images and displaying a list on a display unit;
Designation means for allowing a user to designate one thumbnail image from among the thumbnail images displayed in a list on the display section by the display control means based on a key operation in the key operation section;
Reproduction means for performing reproduction with the frame data corresponding to the one thumbnail image designated by the designation means as a reproduction start position;
It is characterized by providing.

  According to a third aspect of the present invention, in the playback apparatus according to the second aspect, the selecting means includes a plurality of frames from frame data existing within a predetermined range before and / or after the specific frame data. Data is selected at regular intervals.

  According to a fourth aspect of the present invention, in the playback apparatus according to the second aspect, the selecting means includes a plurality of frames from frame data existing within a predetermined range before and / or after the specific frame data. The data is selected from the specific frame data by increasing the interval stepwise.

According to the first aspect of the present invention, the playback device that plays back the image data recorded on the information recording medium is provided with the key operation unit that accepts the key operation by the user. Any time information skipped from the current processing position in the information recording medium is input by the user, and any time input by the input means based on the key operation in the key operation unit by the frame interval selection means The frame interval when selecting a plurality of frame data from the frame data existing in a predetermined range before and / or after the specific frame data at the position corresponding to the information is stepwise from the fixed interval or the specific frame data. The image selected by the user from the widening interval and recorded on the information recording medium by the selection means. The specific frame data at a position corresponding to arbitrary time information input by the input means is selected from the data, and before and / or before the specific frame data based on the frame interval selected by the frame interval selection means. Alternatively, a plurality of frame data existing within a predetermined range later are selected, and the display control unit converts the specific frame data and the plurality of frame data selected by the selection unit into thumbnail images, respectively, and displays them in a list on the display unit. Based on the key operation in the key operation unit by the designation unit, one thumbnail image is designated by the user from among the thumbnail images displayed in the list on the display unit by the display control unit, and by the reproduction unit by the designation unit. The frame data corresponding to the specified thumbnail image is the playback start position. Been with, reproduction is performed.
Therefore, frame data at a position skipped by an arbitrary time input by the user and frame data within a predetermined range before and / or after the frame data are converted into thumbnail images and presented to the user. Thus, it is possible to provide a playback apparatus that can more easily select a desired playback start position and start playback. In addition, since a thumbnail image based on frame data selected by a method in accordance with the user's wish is presented to the user from within a predetermined range corresponding to arbitrary time information input by the user, usability is improved. It will be.

According to the second aspect of the present invention, in the reproducing apparatus for reproducing the image data recorded on the information recording medium, the key operation unit that accepts the key operation by the user is provided, and the key operation in the key operation unit is performed by the input unit. Based on this, arbitrary time information to be skipped from the current processing position on the information recording medium is input by the user, and arbitrary time information input by the input means from the image data recorded on the information recording medium by the selection means Specific frame data at a position corresponding to is selected, and a plurality of frame data existing within a predetermined range before and / or after the specific frame data are selected, and the specific selected by the selection means by the display control means Each of the frame data and the plurality of frame data is converted into a thumbnail image and displayed on the display unit. One thumbnail image is designated by the user from among the thumbnail images displayed on the display unit by the display control unit based on the key operation in the key operation unit. Playback is performed with the frame data corresponding to one thumbnail image designated by the above as the playback start position.
Therefore, frame data at a position skipped by an arbitrary time input by the user and frame data within a predetermined range before and / or after the frame data are converted into thumbnail images and presented to the user. Thus, it is possible to provide a playback apparatus that can more easily select a desired playback start position and start playback.

In the invention of claim 3, it is needless to say that the effect of the invention of claim 2 can be obtained, and the selection means allows the frame data existing within a predetermined range before and / or after the specific frame data. A plurality of frame data are selected at regular intervals.
Therefore, the user can select a playback start position from thumbnail images based on frame data obtained evenly from a predetermined range of a position corresponding to the input arbitrary time information.

In the invention according to claim 4, it is needless to say that the effect of the invention according to claim 2 can be obtained, and by the selection means, the frame data existing within a predetermined range before and / or after the specific frame data is selected. A plurality of pieces of frame data are selected from the specific frame data by increasing the intervals step by step.
Therefore, since more thumbnail images based on the frame data existing at positions close to the position corresponding to the arbitrary time information input by the user are presented, the user can reproduce the vicinity of the input arbitrary time information at the reproduction start position. It becomes possible to select more finely.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The scope of the invention is not limited to the illustrated example.

  In this embodiment, a DVD player that plays back content data including video data (image data) recorded on a DVD (Digital Versatile Disc) is used as a playback device that plays back image data recorded on an information recording medium. An explanation will be given by way of example.

First, the overall configuration of the DVD player 100 according to the present embodiment will be described with reference to FIG.
As shown in FIG. 1, a DVD player 100 as a playback device includes a device main body 1 that plays back content data composed of video data, audio data, sub-video data, etc. recorded on a DVD 11a, and a user gives various operation instructions. A remote controller 2 and the like for inputting and remotely operating the apparatus main body 1 are provided. The apparatus main body 1 is connected to a television receiver 3 that outputs video / audio based on content data reproduced in the apparatus main body 1.

A remote controller (hereinafter referred to as a remote controller) 2 includes a key operation unit 21 having a plurality of operation keys, and remotely operates the apparatus main body 1 of the DVD player 100. Specifically, in the key operation unit 21 provided in the remote controller 2 or the like, when a key is pressed by the user, an input operation signal such as infrared rays corresponding to the pressed key is output, and the input operation signal Is output to the control unit 18 via the remote control signal light receiving unit 17 provided in the apparatus main body 1.
The key operation unit 21 includes, for example, a frame interval selection key 21a for displaying a frame interval selection screen D1 (described later), a skip time input key 21b for displaying a skip time input screen D2 (described later), and a skip time input screen. A numeric keypad 21c, an up / down key 21d, a decision key 21e, etc., to which numbers (0 to 9) for inputting a skip time (to be described later) in D2, an instruction input of a channel number, and the like are assigned, are provided. Further, although not shown, a power key for turning on / off the power of the DVD player 100, a reproduction key for inputting a reproduction instruction, a stop key for inputting a stop instruction, and various menu screens are displayed. Menu key, etc.
The key operation unit 21 may be configured to be provided in the apparatus main body 1.

  The apparatus main body 1 includes a DVD drive unit 11 that reproduces content data recorded on the DVD 11a, a data processor 12 that outputs content data captured from the DVD drive unit 11 to each unit, and a content output from the DVD drive unit 11. A decoder unit 13 that performs a predetermined decoding process on data, an OSD (On Screen Display) circuit 14 that adds OSD data 1822b to video data, and a predetermined signal output for content data output from the decoder unit 13 The output interface unit 16 that performs processing, the input operation signal from the key operation unit 21, and the remote control signal light receiving unit 17 that outputs the received input operation signal to the control unit 18, and each unit of the apparatus main body 1 are comprehensively controlled. And a control bus 19 for connecting each part of the apparatus main body 1 , And a like.

  The DVD drive unit 11 rotates, for example, a DVD 11a loaded on a disc tray (not shown) of the DVD drive unit 11, an optical pickup 11b for reading data recorded on the DVD 11a, and a DVD 11a loaded on the disc tray. A spindle motor 11c to be driven, a feed motor 11d to move the optical pickup 11b in the radial direction of the DVD 11a, and the like are provided.

Specifically, the DVD 11a is a rewritable DVD-Video / DVD-ROM (DVD-Read Only Memory), a write-once DVD-R (DVD-Recordable) / DVD-RW (DVD-ReWritable), rewritable. A DVD-RAM (DVD-Random Access Memory) or the like, a disk substrate (not shown), a recording layer (not shown) formed by a material whose crystal structure changes by heating by laser light irradiation, and laser light A reflection layer (not shown) for reflection is provided.
In the DVD drive unit 11 configured as described above, in the reproduction processing of the content data recorded on the DVD 11a, the optical pickup 11b irradiates the reflective layer of the DVD 11a with laser light, and responds to the reflected light by photoelectric conversion and current-voltage conversion. By generating a voltage signal, the data recorded on the DVD 11a is read and output to the data processor 12 at the subsequent stage.

  Here, in the selection program 183c described later, when obtaining predetermined frame data from the image data recorded on the DVD 11a, this is an area corresponding to the file management system by the DVD player 100 and recorded in the VTS area. The address information of the area in which the target frame data is recorded is read from the VMG (Video Manager) area where the management information for managing the content data is recorded and the video title set information (VTSI). Frame data is acquired based on the issued address information and the like.

The data processor 12 includes, for example, a buffer memory 12a, and performs predetermined signal processing on content data read from the DVD 11a based on control from the control unit 18. In the data processor 12, for example, an ATAPI (AT Attachment Packet Interface) method is adopted.
Specifically, the data processor 12 performs A / D conversion after converting the content data input from the DVD drive unit 11 into a digital signal. Thereafter, 8/16 demodulation is performed, and error correction processing based on an error correcting code (ECC) added to the content data is performed.
Further, the data processor 12 is controlled so that the content data input from the DVD drive unit 11 is temporarily stored in the buffer memory 12a and output to the subsequent stage at a constant rate.

The decoder unit 13 includes, for example, a separation unit 13a, a video decoder 13b, an audio decoder 13c, a sub-picture decoder 13d, and the like.
The separation unit 13a separates the content data input from the data processor 12 into a plurality of data such as video data (image data), audio data, and sub-video data, and the separated video data is sent to the video decoder 13b. The sub-picture data is output to the audio decoder 13c to the sub-picture decoder 13d. The video decoder 13b decodes the video data separated in the separation unit 13a according to the MPEG system, and the audio decoder 13c decodes the audio data separated in the separation unit 13a according to the MPEG audio system. Further, the sub picture decoder 13d decodes the sub video data separated in the separation unit 13a.

  For example, the thumbnail image creation unit 14 acquires image data (frame data) for one frame for generating the thumbnail image Tn from the video data decoded by the video decoder 13b according to the control from the control unit 18. The obtained frame data is scaled to a predetermined reduced size to generate a thumbnail image Tn, which is output to the output interface unit 16.

  The OSD circuit 15 performs processing for synthesizing OSD data 1822b stored in a memory unit 182 and a ROM 183, which will be described later, with video data constituting the content data.

  The output interface unit 16 includes, for example, a D / A converter 16a and the like, and performs various output interface processes on the content data input from the decoder unit 13 in the reproduction process, and a television such as an NTSC system or a PAL system. The data is converted into data suitable for the receiver 3. The video data, audio data, and sub-video data that have been subjected to the output interface processing in the output interface unit 16 are output to the television receiver 3 connected to the apparatus body 1 and are displayed on the display unit 31 of the television receiver 3. The video based on the data is displayed, the audio based on the audio data is output from the speaker 32, and the sub video based on the sub video data is displayed on the display unit 31.

  Specifically, for example, the output interface unit 16 creates a later-described frame interval selection screen D1 based on the OSD data 1822b for the frame interval selection screen template output from the OSD circuit 15 according to the control of the control unit 18. Then, the data is output to the display unit 31 of the television receiver 3. Further, the output interface unit 16 creates a skip time input screen D2, which will be described later, based on the OSD data 1822b for the skip time input screen template output from the OSD circuit 15 under the control of the control unit 18, and displays the display unit. To 31. Further, the output interface unit 16 superimposes the thumbnail image Tn input from the thumbnail image creation unit 14 on the OSD data 1822b for the reproduction start position designation screen template output from the OSD circuit 15 in accordance with the control of the control unit 18. As a result, a reproduction start position designation screen D3 described later is created and output to the display unit 31.

  The remote control signal light receiving unit 17 receives an input operation signal such as an infrared ray that is output when various keys provided in the key operation unit 21 of the remote control 2 are pressed by the user, and the received input operation signal is sent to the control unit 18. Output.

  The control unit 18 includes a CPU (Central Processing Unit) 181, a memory unit 182, a ROM (Read Only Memory) 183, and the like.

  The CPU 181 is stored in the ROM 183 according to input signals input from each unit of the apparatus main body 1 or input operation signals input via the remote control signal light receiving unit 17 by pressing various keys of the key operation unit 21. The various operations of the DVD player 100 are comprehensively controlled by outputting output signals to the respective parts of the apparatus main body 1 based on the programs for execution.

The memory unit 182 includes a work area 1821 made of a volatile memory such as a RAM (Random Access Memory), for example. Processing results generated when various programs are executed by the CPU 181, input data, etc. Stored in work area 1821.
The memory unit 182 includes a data area 1822 made of a nonvolatile memory such as an EPROM (Erasable Programmable ROM).
This data area 1822 stores setting data 1822a such as a mode selected by the user in a frame interval selection program 183a described later.
The data area 1822 stores OSD data 1822b related to OSD display to be displayed on the display unit 31 of the television receiver 3. Although not shown in the figure as OSD data 1822b, the OSD data for the frame interval selection screen template for creating the frame interval selection screen D1 and arbitrary time information to be skipped from the current processing position are input to the input user. OSD data for a skip time input screen template for creating a skip time input screen D2, and OSD data for a playback start position designation screen template for creating a reproduction start position designation screen D3.
Further, the data area 1822 stores a thumbnail image information table 1822 (see FIG. 5) created simultaneously with the creation of the thumbnail image Tn in the execution of the display control program 183b described later.

  The ROM 183 has a program storage area made up of, for example, a non-volatile memory. Specifically, the frame interval selection program 183a, skip time input program 183b, selection program 183c, display control program 183d, designation program 183e, and playback A program 183f and the like are provided.

The frame interval selection program 183a, for example, causes the CPU 181 to execute a skip time input program 183b, which will be described later, based on a key operation in the key operation unit 21, and to specify a specific frame at a position corresponding to arbitrary time information input by the user. The frame interval for selecting a plurality of frame data from among the frame data existing within a predetermined range before and / or after the data Sf is selected from a fixed interval or an interval that gradually expands from the specific frame data Sf. This is a program for realizing a function to be selected by the user.
Specifically, an input operation for displaying the frame interval selection screen D1 on the display unit 31 of the television receiver 3 by the key operation of the frame interval selection key 21a in the key operation unit 21 provided in the remote controller 2 or the like by the user. When the signal is input to the control unit 18 via the remote control signal light receiving unit 17, the CPU 181 reads the OSD data 1822b for the frame interval selection screen template stored in the memory unit 182 and reads the read OSD data 1822b into the OSD. By adding to the data output to the output interface unit 16 by the circuit 15, the frame interval selection screen D1 is displayed on the display unit 31.
FIG. 2 is a diagram illustrating a frame interval selection screen D1 displayed on the display unit 31. As shown in FIG. 2, the frame interval selection screen D1 includes a mode 1 in which a plurality of frame data to be displayed as thumbnail images Tn on a reproduction start position designation screen D3 (to be described later) is acquired at regular intervals, and a reproduction start position designation screen D3. The user is allowed to select any one of the mode 2 in which a plurality of frame data to be displayed as thumbnail images Tn are acquired from a specific frame data Sf (described later) at a stepwise interval. In such a frame interval selection screen D1, when mode 1 or mode 2 is selected by a key operation in the key operation unit 21 provided in the remote controller 2 or the like, the selected mode is set as a frame interval selected by the user as a memory unit. The setting data 1822a is stored in the data area 1822 of 182.
The CPU 181 functions as a frame interval selection unit by executing the frame interval selection program 183a.

The skip time input program 183b is a program for causing the CPU 181 to realize a function of allowing the user to input arbitrary time information to be skipped from the current processing position on the DVD 11a based on the key operation in the key operation unit 21, for example. .
Specifically, an input for displaying a frame interval selection screen D1 on the display unit 31 of the television receiver 3 by a user's key operation such as a skip time input key 21b in the key operation unit 21 provided in the remote controller 2 or the like. When the operation signal is input to the control unit 18 via the remote control signal light receiving unit 17, the CPU 181 reads the OSD data 1822b for the skip time input screen template stored in the memory unit 182 and reads the OSD data 1822b read out. The skip time input screen D2 is displayed on the display unit 31 by adding to the data output to the output interface unit 16 by the OSD circuit 15.
FIG. 3 is a diagram illustrating a skip time input screen D <b> 2 displayed on the display unit 31. As shown in FIG. 3, on the skip time input screen D2, arbitrary time information to be skipped from the current processing position on the DVD 11a (hereinafter, “arbitrary time information to be skipped from the current processing position” is referred to as “skip time”. Can be input in units of hours, minutes, and seconds, and further, it is possible to select whether to skip backward or forward from the current processing position. When the user wants to skip and play before starting playback or during playback or pause of content data, the user operates a predetermined key in the key operation unit 21 such as the remote controller 2 to skip to the display unit 31. The time input screen D2 is displayed, and the skip time (for example, “30 minutes”) and the skip direction are displayed on the skip time input screen D2 by operating the numeric keypad 21c or the up / down key 21d provided in the key operation unit 21. (For example, “backward”). The skip time and skip direction input by the user are temporarily stored in the work area 1821 of the memory unit 182, and a selection program 183c described later is executed based on the skip time and skip direction.
The CPU 181 functions as an input unit by executing the skip time input program 183b.

  Of the skip directions here, “backward” means a fast-forward direction in special reproduction processing, and “forward” means a fast-reverse direction in special reproduction processing.

The selection program 183c selects, for example, specific frame data Sf at a position corresponding to arbitrary time information input by the execution of the skip time input program 183b from the video data recorded on the DVD 11a to the CPU 181 and the frame interval. This is a program for realizing a function of selecting a plurality of frame data existing in a predetermined range R before and / or after the specific frame data Sf based on the frame interval selected by executing the selection program 183a.
Specifically, in the execution of the skip time input program 183b, the CPU 181 inputs the skip time and the skip direction, which are arbitrary time information to be skipped from the current processing position, by the user. Based on the direction, the specific frame data Sf existing at the position skipped from the current processing position in the skip direction by the skip time is selected from the video data recorded on the DVD 11a, and before the specific frame data Sf. A plurality of frame data existing within a predetermined range after that are selected.
The CPU 181 functions as a selection unit by executing the selection program 183c.

Here, the frame data selection process in the execution of the selection program 183c will be described more specifically.
FIG. 4 (a) shows that in execution of the frame interval selection program 183a, the user has selected a frame interval in mode 1 in which a plurality of frame data to be displayed as thumbnail images Tn on the reproduction start position designation screen D3 is acquired at regular intervals. It is a figure for demonstrating the selection process of the frame data performed by execution of the selection program 183c in the case. FIG. 4B shows a plurality of pieces of frame data to be displayed as thumbnail images Tn on the reproduction start position designation screen D3 when the frame interval selection program 183a is executed, with the intervals being gradually increased from the specific frame data Sf. It is a figure for demonstrating the selection process of the frame data performed by execution of the selection program 183c, when the frame space | interval of the mode 2 to perform is selected by the user.

First, referring to FIG. 4A, the execution of the frame interval selection program 183a selects mode 1 for acquiring frame data at a constant interval, and the mode 1 is set as setting data 1822a in the data area 1822 of the memory unit 182. The frame data selection process when stored is described.
For example, the skip time input screen D2 is displayed on the display unit 31 by a key operation on the key operation unit 21 such as the remote controller 2 at a position p1 (current processing position) where the user temporarily stops the content data reproduction process. When “30 minutes” is input as the skip time and “backward” is input as the skip direction, the CPU 181 is input by the user from the current processing position p1, as shown in FIG. 4A. The specific frame data Sf1 existing at the backward position p2 by the skip time of 30 minutes is selected and acquired from the image data recorded on the DVD 11a in the DVD drive unit 11.
Further, the CPU 181 selects and acquires a plurality of pieces of frame data existing within a predetermined range R1 before and after the specific frame data Sf1. For example, the CPU 181 selects and obtains six pieces of frame data A to F existing at intervals of 5 minutes in R1 within the range of 20 minutes forward and 10 minutes backward of the specific frame data Sf1.
Thus, the specific frame data Sf1 existing at the position p2 skipped from the position p1 that is the current processing position by the skip time input by the user from the image data constituting the content data recorded on the DVD 11a, and the specific frame Six pieces of frame data A to F existing at intervals of 5 minutes in the range R1 within 20 minutes in the forward direction and 10 minutes in the backward direction of the data Sf1 are read out.

Next, referring to FIG. 4B, the execution of the frame interval selection program 183a described above selects mode 2 in which the frame data is acquired from the specific frame data Sf in a stepwise manner. The frame data selection process in the case where is stored as setting data 1822a in the data area 1822 of the memory unit 182 will be described.
For example, the skip time input screen D2 is displayed on the display unit 31 by a key operation on the key operation unit 21 such as the remote controller 2 at a position p3 (current processing position) where the user has paused the content data reproduction process. When “40 minutes” is input as the skip time and “forward” is input as the skip direction, the CPU 181 is input by the user from the current processing position p3 as shown in FIG. 4B. The specific frame data Sf2 existing at the forward position p3 by the skip time of 40 minutes is selected and acquired from the image data recorded on the DVD 11a in the DVD drive unit 11.
Further, the CPU 181 acquires a plurality of frame data existing in a predetermined range R2 before and after the specific frame data Sf2 from the specific frame data Sf2 at intervals that are increased stepwise. For example, the CPU 181 exists within a 30-minute range R2 centered on the specific frame data Sf2 at intervals of 1 minute, 2 minutes, 3 minutes, 4 minutes, and 5 minutes around the specific frame data Sf2. Ten pieces of frame data G to P are selected and acquired.
Thus, the specific frame data Sf2 existing at the position p4 skipped from the position p3 that is the current processing position by the skip time input by the user from the image data constituting the content data recorded on the DVD 11a, and the specific frame Frame data G to P existing in a step-by-step interval such as a 1-minute interval, a 2-minute interval, a 3-minute interval, a 4-minute interval, and a 5-minute interval within a 30-minute range R2 centered on the data Sf2, It will be read out.

For example, the display control program 183d realizes a function of causing the CPU 181 to convert the specific frame data Sf and the plurality of frame data selected by the execution of the selection program 183c into thumbnail images Tn and display the list on the display unit 31. It is a program to make it.
Specifically, the selection program 183c is executed based on the mode 1 or mode 2 setting indicating the frame interval selected by the execution of the frame interval selection program 183a, and the image recorded on the DVD 11a in the DVD drive unit 11 is executed. When the specific frame data Sf and the plurality of frame data existing within the predetermined range R of the specific frame data Sf are read from the data, the CPU 181 converts the read frame data into the decoder unit 13 via the data processor 12. And the video decoder 13b in the decoder unit 13 performs the decoding process. Further, the decoded frame data is output to the thumbnail image creation unit 14, and the thumbnail image creation unit 14 converts each frame data into a thumbnail image Tn by performing a reduction process or the like.
Further, the CPU 181 outputs the thumbnail image Tn created in the thumbnail image creation unit 14 to the output interface unit 16 to perform a predetermined output process, and performs the predetermined output processing on the thumbnail image Tn output to the output interface unit 16. The OSD circuit 15 adds the OSD data 1822b for the reproduction start position designation screen template read from the memory unit 182, thereby creating a reproduction start position designation screen D3 displaying a list of thumbnail images Tn. Then, it is displayed on the display unit 31.
The CPU 181 functions as a display control unit by executing the display control program 183d.

Here, the thumbnail image creation / list display process in the execution of the display control program 183d will be described more specifically.
For example, by executing the selection program 183c described above, from the video data (image data) constituting the content data recorded on the DVD 11a, the specific frame data Sf1, the forward direction 20 minutes and the backward direction 10 minutes of the specific frame data Sf1. When six pieces of frame data A to F existing at an interval of 5 minutes in the range R1 are read, the CPU 181 converts these specific frame data Sf and frame data A to F into the thumbnail image creation unit 14. To be converted into thumbnail images Tn1 to Tn7.
In addition, when the thumbnail image Tn is created by the thumbnail image creation unit 14, the CPU 181 records the identification ID and the image data that is the origin of the thumbnail image Tn in each of the created thumbnail images Tn. The thumbnail image information table 1822c (see FIG. 5) to which the address information and the time information for the normal playback process from the current processing position are assigned is created, and the created thumbnail image information table 1822c is used as the data area of the memory unit 182. 1822 is temporarily stored.
Next, the CPU 181 creates thumbnail images Tn1 to Tn7 in the thumbnail image creation unit 14 based on the specific frame data Sf and the frame data A to F selected and read from the DVD 11a by executing the selection program 183c. Then, the generated thumbnail images Tn 1 to Tn 7 are output to the output interface unit 16, and the OSD data 1822 b for the reproduction start position designation screen template is read from the memory unit 182, and the read OSD data 1822 b is converted to the OSD circuit 15. The reproduction start position designation screen D3 on which the thumbnail images Tn1 to 7 are displayed in a list is created and displayed on the display unit 31 by performing the process of superimposing the thumbnail images Tn1 to Tn7 output to the output interface unit 16 by the above. .

For example, the designation program 183e allows the CPU 181 to select one thumbnail image Tn from the thumbnail images Tn displayed as a list on the display unit 31 by executing the display control program 183d based on the key operation in the key operation unit 21. It is a program for realizing the function to be specified.
Specifically, when the reproduction start position designation screen D3 on which the thumbnail images Tn are listed together with the identification IDs is displayed on the display unit 31 by the execution of the display control program 183d, the user can use the keys on the remote controller 2 or the like. A key operation on the operation unit 21 is performed, and one thumbnail image Tn to be designated as the reproduction start position is selected from the thumbnail images Tn displayed as a list on the reproduction start position designation screen D3. The identification ID and time information are associated with the identification ID and time information assigned to the thumbnail image Tn in the thumbnail image information table 1822c stored in the memory unit 182, for example.

FIG. 6 is a diagram illustrating a reproduction start position designation screen D3 displayed on the display unit 31 by the thumbnail image creation / list display process based on the execution of the display control program 183d by the CPU 181 described above.
As shown in FIG. 6, on the reproduction start position designation screen D3, for example, the frame data selected by the execution of the selection program 183c (for example, the specific frame data Sf1 and the specific frame data Sf1 forward 20 minutes / reverse) Thumbnail images Tn1 to Tn7 created on the basis of six pieces of frame data A to F) existing at intervals of 5 minutes in R1 within a range of 10 minutes are displayed together with time information. The time information is, for example, the time required for normal reproduction processing from the current processing position (for example, p1 in FIG. 4A), and the thumbnail image Tn existing in the backward direction with respect to the current processing position is positive. The thumbnail image Tn existing in the forward direction is assigned a negative time. That is, for example, the skip time (for example, “+30 minutes”) input by the user is assigned to the specific frame data Sf.
In such a reproduction start position designation screen D3, the user designates a thumbnail image Tn to be selected as a reproduction start position by a key operation on the key operation unit 21 such as the remote controller 2.
The CPU 181 functions as a designation unit by executing the designation program 183e.

For example, the reproduction program 183f is a program for causing the CPU 181 to realize a function of performing reproduction using the frame data corresponding to one thumbnail image Tn designated by the execution of the designation program 183e as a reproduction start position.
Specifically, when one thumbnail image Tn is designated by the user on the reproduction start position designation screen D3 by executing the above-described designation program 183e, the CPU 181 determines based on the identification ID of the selected thumbnail image Tn. In the execution of the display control program 183d, referring to the thumbnail image information table 1822c created at the same time as the thumbnail image Tn and stored in the memory unit 182, frame data that is the source of the thumbnail image Tn selected by the user is recorded. The address information of the DVD 11a being read is read out. Then, the DVD drive unit 11 starts the reproduction process with the read address information as the reproduction start position.
For example, on the playback start position designation screen D3, when a thumbnail image Tn that exists at a position skipped 25 minutes backward from the current processing position is selected by a user key operation on the key operation unit 21 such as the remote controller 2, The CPU 181 refers to the thumbnail image information table 1822c based on the identification ID (eg, “004”) assigned to the thumbnail image Tn, and the DVD 11a in which the original frame data of the thumbnail image Tn is recorded. Address information (for example, “xxxxxxxx004”) is read out, and playback of the content data recorded on the DVD 11a is started using the read address information as a playback start position.
The CPU 181 functions as a playback unit by executing the playback program 183f.

Next, skip processing performed by the CPU 181 will be described with reference to the flowchart of FIG.
First, the CPU 181 monitors the presence or absence of a key operation in the key operation unit 21 such as the remote controller 2 and determines whether or not the skip time input key 21b is operated in the key operation unit 21 in step S1. When the user presses the skip time input key 21b and an input operation signal corresponding to the key operation is input to the control unit 18, the CPU 181 determines in step S1 that the skip time input key 21b has been operated. (Step S1; Yes) In step S2, the OSD data 1822b for the skip time input screen template stored in the memory unit 182 is output to the OSD circuit 15, and the OSD data 1822b is output to the output interface unit 16 in the OSD circuit 15. Is added to the data to be output, the skip time input screen D2 is displayed on the display unit 31. Next, based on the skip time input screen D2 displayed on the display unit 31, when the user inputs a skip time and a skip direction by a key operation such as the numeric keypad 21c in the key operation unit 21 in step S3, the CPU 181 is executed. In step S4, the specific frame data Sf present at the position skipped by the skip time input by the user from the current processing position is selected and read from the DVD 11a loaded in the DVD drive unit 11. Further, in step S5, the CPU 181 refers to the setting data 1822a stored in the data area 1822 of the memory unit 182 and refers to the mode 1 in which a plurality of frame data to be displayed as the thumbnail image Tn is acquired at regular intervals. It is read out from frame data Sf (described later) which mode 2 is set to acquire frame data by gradually increasing the interval, and the frame interval based on the read mode is determined from the specific frame data Sf selected in step S4. A plurality of frame data existing within a predetermined range before and / or after are selected and read from the DVD 11a.

  In step S6, the CPU 181 outputs the frame data read in steps S4 and S5 to the decoder unit 13 via the data processor 12, and performs a decoding process by the video decoder 13b. Further, in step S7, the CPU 181 outputs the decoded frame data to the thumbnail image creation unit 14, and the thumbnail image creation unit 14 performs scaling on each frame data to convert it into a thumbnail image Tn. In step S8, the CPU 181 outputs a plurality of thumbnail images Tn created in the thumbnail image creation unit 14 to the output interface unit 16 to perform output processing, and outputs them to the output interface unit 16 by the OSD circuit 15. The reproduction start position designation screen D3 on which the thumbnail images Tn are displayed as a list is created by superimposing the OSD data 1822b for the reproduction start position designation screen template on the thumbnail image Tn to be created, and the created reproduction start position designation is performed. The screen D3 is displayed on the display unit 31.

  Next, in step S9, when one thumbnail image Tn is selected by the user by a key operation on the key operation unit 21 on the reproduction start position designation screen D3 displayed on the display unit 31, the CPU 181 selects the selected thumbnail image Tn. The address information of the DVD 11a in which the image data that is the source of the thumbnail image Tn is read from the thumbnail image information table 1822c, and the frame data that is the source of the thumbnail image Tn is recorded based on the read address information in step S10. The playback is started with the position thus set as the playback start position, and this processing is terminated.

According to the DVD player 100 of this embodiment according to the present invention described above, the key operation unit 21 that accepts a key operation by the user is provided, and the key operation in the key operation unit 21 can be performed by the execution of the skip time input program 183b by the CPU 181. Based on this, arbitrary time information to be skipped from the current processing position on the DVD 11a is input by the user, and is input by the execution of the skip time input program 183b based on the key operation in the key operation unit 21 by the frame interval selection means. The frame interval when selecting a plurality of frame data from frame data existing in a predetermined range before and / or after the specific frame data Sf at a position corresponding to arbitrary time information is a fixed interval or the specific While expanding gradually from the frame data Specific frame data at a position corresponding to arbitrary time information input by execution of the skip time input program 183b from image data selected by the user and executed by the execution of the selection program 183c. Sf is selected, and a plurality of frame data existing in a predetermined range R before and / or after the specific frame data Sf are selected based on the frame interval selected by executing the frame interval selection program 183a, As the display control program 183d is executed, the specific frame data Sf and the plurality of frame data selected by the execution of the selection program 183c are converted into thumbnail images Tn and displayed in a list on the display unit 31. Further, when the designation program 183e is executed by the CPU 181, one thumbnail image Tn is selected from the thumbnail images Tn displayed as a list on the display unit 31 by execution of the display control program 183d based on the key operation in the key operation unit 21. The reproduction is performed by the reproduction means with the frame data corresponding to one thumbnail image Tn designated by the designation means designated by the user.
Therefore, frame data at a position skipped by an arbitrary time input by the user and frame data within a predetermined range before and / or after the frame data are converted into thumbnail images and presented to the user. Thus, it is possible to provide a playback apparatus that can more easily select a desired playback start position and start playback. In addition, since a thumbnail image based on frame data selected by a method in accordance with the user's wish is presented to the user from within a predetermined range corresponding to arbitrary time information input by the user, usability is improved. It will be.

In the present invention, various improvements and design changes may be made without departing from the spirit of the invention.
For example, the information recording medium and the reproducing apparatus are not limited to the DVD 11a / DVD player 100, and may be a hard disk apparatus that reproduces image data recorded on the hard disk, for example.
Further, the frame interval, the number of frame data, and the like when selecting a plurality of frame data existing within a predetermined range of specific frame data are not limited to those exemplified in the above embodiment, and can be arbitrarily set. Further, the range for selecting a plurality of frame data is not limited to that exemplified in the above embodiment.

It is a block diagram which shows the whole structure of the DVD player in this embodiment. It is a figure which illustrates the frame space | interval selection screen displayed on a display part. It is a figure which illustrates the skip time input screen displayed on a display part. It is a figure for demonstrating the selection process of the frame data in execution of a selection program. It is an example of a thumbnail image information table. It is a figure which illustrates the reproduction start position designation screen displayed on a display part. It is a flowchart which shows the skip process performed by CPU.

Explanation of symbols

100 DVD player (playback device)
11a DVD (information recording medium)
21 Key operation unit 181 CPU (frame interval selection means, input means, selection means, display control means, designation means, reproduction means)
183a Frame interval selection program (frame interval selection means)
183b Skip time input program (input means)
183c Selection program (selection means)
183d Display control program (display control means)
183e Designated program (designating means)
183f Reproduction program (reproduction means)
Sf Specific frame data Tn Thumbnail image

Claims (4)

In a playback device for playing back image data recorded on an information recording medium,
A key operation unit that accepts user key operations;
An input unit that allows the user to input arbitrary time information to be skipped from the current processing position in the information recording medium based on a key operation in the key operation unit;
Based on the key operation in the key operation unit, a plurality of frame data existing within a predetermined range before and / or after the specific frame data at the position corresponding to the arbitrary time information input by the input means Frame interval selection means for allowing a user to select a frame interval when selecting the frame data from a fixed interval or an interval that gradually expands from the specific frame data; and
The specific frame data at a position corresponding to the arbitrary time information inputted by the input means is selected from the image data recorded on the information recording medium, and the frame interval selected by the frame interval selection means A selection means for selecting a plurality of frame data existing within a predetermined range before and / or after the specific frame data,
Display control means for converting the specific frame data and the plurality of frame data selected by the selection means into thumbnail images and displaying a list on a display unit;
Designation means for allowing a user to designate one thumbnail image from among the thumbnail images displayed in a list on the display section by the display control means based on a key operation in the key operation section;
Reproduction means for performing reproduction with the frame data corresponding to the one thumbnail image designated by the designation means as a reproduction start position;
A playback apparatus comprising: In a playback device for playing back image data recorded on an information recording medium,
A key operation unit that accepts user key operations;
An input unit that allows the user to input arbitrary time information to be skipped from the current processing position in the information recording medium based on a key operation in the key operation unit;
A specific frame data at a position corresponding to the arbitrary time information input by the input means is selected from the image data recorded on the information recording medium, and a predetermined frame data before and / or after the specific frame data is selected. A selection means for selecting a plurality of frame data existing within the range;
Display control means for converting the specific frame data and the plurality of frame data selected by the selection means into thumbnail images and displaying them in a list on a display unit;
Designation means for allowing a user to designate one thumbnail image from among the thumbnail images displayed in a list on the display section by the display control means based on a key operation in the key operation section;
Reproduction means for performing reproduction with the frame data corresponding to the one thumbnail image designated by the designation means as a reproduction start position;
A playback apparatus comprising:   The said selection means selects several frame data from the frame data which exists in the predetermined range before and / or after the said specific frame data at fixed intervals, The Claim 2 characterized by the above-mentioned. Playback device.   The selecting means selects a plurality of frame data from among the frame data existing within a predetermined range before and / or after the specific frame data by gradually increasing the interval from the specific frame data. The reproducing apparatus according to claim 2, wherein

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