JP2007251303A - Moving picture reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a moving picture reproducing apparatus in which moving picture data recorded on a recording medium can be divided into chapters by a simple operation. <P>SOLUTION: Moving picture data divided into chapters are read out from a recording medium and a moving picture is reproduced. During the reproduction of that moving picture, moving picture data within a predetermined time range before and after a current spot is searched in response to an input of search, and such a spot as the image information constituting that moving picture data vary most are detected. The moving picture data are divided into chapters at the detected spot. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention records moving image data on a recording medium, such as an HDD (Hard Disk Drive) recorder or DVD (Digital Versatile Disk) recorder, and reads the recorded data to reproduce the moving image. Relates to the device.

  A general moving image reproducing apparatus records a broadcast program transmitted by analog broadcasting or digital broadcasting as moving image data on a recording medium such as an HD (hard disk) or a DVD in accordance with reserved recording or recording operation, and then moves the moving image. Data is sent to the monitor device in accordance with the reproduction operation to display (reproduce) the program.

  Here, the moving image data (program) recorded on the recording medium may include moving image data that the user wants to reproduce and view repeatedly. For this moving image data, the user often wants to improve viewing and listening.

  Therefore, a general moving image reproduction apparatus has a function of editing moving image data according to the user's intention. One of the editing functions is chapter division (chapter division) for one frame of moving image data. ) In this chapter division, for one frame of moving image data, the screen of the point to be divided is specified in accordance with the key operation by the user at the playback stage, and the information of the point corresponding to the screen is written to the recording medium. It is. Thus, the chapter is divided at that point. The division points of chapters here include the point where the program main part switches to CM (Commercial Message), the point where the CM changes to the main part of the program, the point where the scene changes within the main part of the program, etc. Switching point is adopted. If chapters are assigned to the moving image data, only the chapters desired by the user can be selected and viewed during subsequent playback, which improves viewing convenience.

In addition, Patent Documents 1 and 2 disclose other methods for improving the viewing of moving image data. In this method, during playback of moving image data, for example, when trying to view a scene including the current screen again from the top screen, the moving image data before the local point is changed according to the pressing operation of the rewind skip key. A point where image information and audio information change is detected from the moving image data of the backward search. Then, rewinding skips to the change point and reproduction is resumed. Conversely, when skipping a scene that includes the current screen and viewing it from the first screen of the next scene, moving image data after the local point is searched according to the pressing operation of the fast-forward skip key, and the forward search is performed. A point where image information or audio information changes is detected from the moving image data. Then, the fast-forward skip to the change point and the reproduction is resumed.
JP 2003-324686 A Special table 2001-503933 gazette

  However, in order to improve the viewing / listening of moving image data with a conventional moving image playback device, when performing chapter division as in the former case, it is used to accurately find the screen of the point to be divided by chapter division. The user must press the frame advance key many times, which is very troublesome for the user.

  Further, in the latter method described above, the search for moving image data performed in response to the key operation is performed only in one direction from the local point, that is, whether the backward search is performed in accordance with the pressing operation of the rewind skip key. Since only forward search according to the pressing operation of the fast-forward skip key is performed, if the key corresponding to the skip destination is wrong, the key operation must be performed again.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a moving image reproducing apparatus capable of dividing chapters of moving image data recorded on a recording medium with a simple operation. It is.

  In order to achieve the above object, a moving image reproducing apparatus according to the present invention is characterized by the following points in the moving image reproducing apparatus that reads moving image data recorded on a recording medium and reproduces the moving image. Reproduction means for reading out moving image data from a recording medium and reproducing the moving image, and during reproduction of the moving image by the reproducing means, searching for moving image data within a range of 1 second before and after the local point according to the input of the search Then, a change point detecting means for detecting the point where the image information constituting the moving image data changes most greatly, a chaptering means for dividing the moving image data at the point detected by the change point detecting means, Is provided. Here, the chaptering means is executed after skipping to a point detected by the change point detecting means and temporarily stopping, and then receiving an input of chaptering.

  With such a configuration, when chaptering is performed on moving image data, a chaptering point that matches the user's intention is automatically detected by searching, and chaptering can be executed at that point. In addition, since the search for the chapter division is performed at the same time both in the forward search and the backward search including the local point where the search is input, the chapter division point according to the user's intention can be surely obtained.

  In order to achieve the above object, a moving image reproducing apparatus according to the present invention reads moving image data from a recording medium in the moving image reproducing apparatus that reads moving image data recorded on the recording medium and reproduces the moving image. And reproducing means for reproducing the moving image, and during the reproduction of the moving image by the reproducing means, according to the input of the search, the moving image data within a predetermined time range including the local point is searched, and the moving image data is A change point detection unit that detects a point at which the image information or audio information constituting the change changes the most, and a chapter division unit that divides moving image data at a point detected by the change point detection unit.

  With such a configuration, when chaptering is performed on moving image data, a chaptering point that matches the user's intention is automatically detected by searching, and chaptering can be executed at that point. In addition, since the search for the chapter division is performed at the same time both in the forward search and the backward search including the local point where the search is input, the chapter division point according to the user's intention can be surely obtained.

  Practically, it is preferable that the chaptering unit is executed after skipping to a point detected by the change point detecting unit and temporarily stopping, and then receiving an input of chaptering.

  According to the moving image reproducing apparatus of the present invention, chapter division of moving image data recorded on a recording medium can be performed with a simple operation.

  Hereinafter, an embodiment of a moving image reproduction apparatus of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of an HDD recorder which is an embodiment of the moving picture reproducing apparatus of the present invention, and FIG. 2 is a flowchart showing an operation at the time of chapter division in the HDD recorder.

  As shown in FIG. 1, the moving picture reproducing apparatus 1 according to the present embodiment is an HDD recorder that employs a hard disk 13 as a recording medium, and the received broadcast program is transferred to the hard disk 13 according to scheduled recording or recording operation. And the moving image data is then sent to the monitor device 30 based on the reproduction operation to display (reproduce) the program for viewing.

  The moving image reproduction apparatus 1 is roughly composed of a system control circuit 2, an OSD (On Screen Display) image generation circuit 4, an operation unit 5, a light receiving unit 6, a timing circuit 7, a display unit 8, a tuner. 9, a moving picture experts group (MPEG) encoder 10, a buffer memory 11, a hard disk device (HDD) 12, an MPEG decoder 16, and an output unit 17. The system control circuit 2 includes a memory 3. The HDD 12 includes a hard disk 13 and an information recording head 14. An antenna 20 is connected to the tuner 9. The output unit 17 is connected to a monitor device 30 such as a television or a display-only monitor.

  The system control circuit 2 controls the operation of the entire moving image playback apparatus 1 while inputting and outputting signals. This operation includes recording of received moving image data (consisting of image information, audio information, etc.), reading out of the recorded data, data searching for chapter division editing, execution of chapter division, and the like. This control is performed based on a program stored in advance in the memory 3, for example. In the memory 3, time information that defines a data range to be subject to chapter search is registered.

  When the system control circuit 2 detects an instruction from the user, the system control circuit 2 generates a signal for displaying a predetermined screen on the monitor device 30. This screen includes a screen for setting periodic recording and scheduled recording, a screen for playing back a moving image based on the recorded moving image data (including a paused screen), an index image and a title for each moving image. A screen on which a list is displayed is included.

  The OSD image generation circuit 4 generates a message image based on an instruction from the operation unit 5, an instruction from a remote control terminal acquired via the light receiving unit 6, or based on a condition predetermined in the system control circuit 2. Generate a signal to display. This message image is an image such as channel display, recording setting screen display, index list display, title list display, volume display, etc., and is different from the moving image from the HDD 12. When the OSD image generation circuit 4 generates such a message image signal, the OSD image generation circuit 4 outputs the message image signal to the output unit 17. When this signal is output, a message image represented by the signal is displayed on the monitor device 30.

  The operation unit 5 detects an instruction input by the user. The operation unit 5 is, for example, an input button provided on the front panel of the moving image playback apparatus 1, but is not limited thereto. The input buttons include a play key, stop key, rewind key, fast forward key, frame advance key, pause key, recording key, chapter key, and the like. When an instruction is detected, a signal for executing processing corresponding to the instruction is generated. This signal is output to the system control circuit 2.

  The light receiving unit 6 receives a remote control signal emitted from the remote control terminal. This signal is output to the system control circuit 2. The remote control terminal includes a reproduction key, a stop key, a rewind key, a fast forward key, a frame advance key, a pause key, a recording key, a chapter key, and the like as input buttons.

  The timer circuit 7 measures the time in the moving image playback apparatus 1. The timer circuit 7 operates based on power supplied from the outside, but can continue to operate for a preset time even if there is a temporary power failure. The timer circuit 7 outputs time data to the system control circuit 2. Further, a control signal from the system control circuit 2 is input. The time of the time measuring circuit 7 is corrected based on the signal from the system control circuit 2.

  The display unit 8 displays information related to the moving image playback device 1. This information includes items such as time, reception channel, counter, recording / playback mode, and the like. The display unit 8 is, for example, an LCD (Liquid Crystal Display) or an LED (Light Emitting Diode) provided on the front surface of the moving image playback device 1, but is not limited thereto.

  The tuner 9 receives moving image data of a program transmitted by analog broadcasting, digital broadcasting or the like via the antenna 20. The data signal received by the tuner 9 is output to the MPEG encoder 10. The tuner 9 can switch the reception channel based on the signal from the system control circuit 2.

  The MPEG encoder 10 converts the analog signal input from the tuner 9 into an MPEG-encoded digital signal and outputs it to the system control circuit 2.

  Based on the signal from the system control circuit 2, the HDD 12 writes MPEG encoded data to the hard disk 13 by the information recording head 14 and reads data stored in the hard disk 13. The hard disk 13 here has a management data area and an object data area as its data storage area. In the object data area, object data representing the moving image object itself is recorded. On the other hand, in the management data area, management data for managing the data of each moving image recorded on the hard disk 13 is recorded. This management data includes data relating to the data system for each moving image object, data relating to attributes such as recording channels and recording dates, data relating to index images, data relating to chaptered points, and the like.

  The buffer memory 11 temporarily records the moving image data received by the moving image reproducing device 1 when recording a broadcast program based on the signal from the system control circuit 2, and the temporarily recorded data. Are sequentially sent to the HDD 12. In addition, at the time of chapter division editing, information on the points detected according to the search input is temporarily recorded.

  The MPEG decoder 16 decodes the MPEG encoded data read from the HDD 12 and outputs the decoded data to the output unit 17.

  The output unit 17 outputs the signal from the OSD image generation circuit 4 and the signal from the MPEG decoder 16 to the monitor device 30. As a result, the image message generated by the OSD image generation circuit 4 and the moving image read from the HDD 12 are displayed on the monitor device 30.

  Next, reservation recording setting by the moving image playback apparatus 1 will be described. When a reservation recording setting command is received from the operation unit 5 or the remote control terminal, the system control circuit 2 displays a recording setting screen on the monitor device 30 through the OSD image generation circuit 4. On the recording setting screen, items such as a recording target program channel, recording start time, recording end time, recording date, weekly recording, and daily recording are displayed.

  When you want to record a series of broadcast programs that are transmitted at a fixed period, the remote control is mainly used for the program's channel, recording start time, recording end time, weekly recording that specifies periodic recording, daily recording, etc. Set by operation on the terminal. When one-time reservation recording is to be performed, the channel, recording start time, recording end time, recording date, etc. of the target program are set.

  The input setting data relating to such reserved recording is stored in the memory 3. The data relating to the periodic recording here continues to be stored in the memory 3 until the periodic recording is canceled, and the data relating to the one-time reserved recording is deleted when the recording is completed.

  The reserved recording set in this way is executed as follows. The system control circuit 2 receives moving image data of a predetermined channel from the tuner 9 via the MPEG encoder 10 at a predetermined start time based on the data relating to the reserved recording stored in the memory 3. The moving image data is temporarily recorded in the buffer memory 11 and sequentially sent to the HDD 12. The sent data is written and recorded on the hard disk 13 by the information recording head 14. When the predetermined end time is reached, these operations are ended and the recording is completed.

  Next, the operation at the time of chapter division by the moving image reproducing apparatus 1 will be described with reference to FIG. In step # 5, the moving image data to be subject to chapter editing is displayed from the index list display screen or title list display screen of the moving image data recorded on the hard disk 13 from the user through the operation unit 5 or the remote control terminal. Program).

  In subsequent step # 10, upon receiving a reproduction input operation (reproduction key pressing operation), the HDD 12 is driven by the signal from the system control circuit 2, and the selected moving image data is read from the hard disk 13. The read data is sequentially output to the output unit 17 via the MPEG decoder 16. Thus, a moving image based on the moving image data to be divided into chapters is displayed on the monitor device 30, and reproduction is started.

  First, in step # 15, it is determined whether or not there is a stop input operation (stop key pressing operation) from the user. If there is a stop input, reading by the HDD 12 is stopped, and the playback of the moving image ends.

  On the other hand, if there is no stop input in step # 15, in step # 20, whether there is a search input operation for chapter division from the user (in this embodiment, an instantaneous pressing operation of the chapter division key). Is determined. If there is no chapter search input, the process returns to step # 15 to wait for a stop or chapter search input.

  If there is an input for chapter search in step # 20, the process proceeds to step # 25. The chapter search is input as the user intends while viewing the playback screen. For example, immediately after switching from the main program to the CM or immediately before switching, the CM is switched to the main program. Immediately after or immediately before switching, immediately after the scene switches in the main part of the program or immediately before switching. In other words, it is done when the screen changes or is about to change.

  In step # 25, in response to the chapter search input, 1 frame before and after the point (local point) at which the search input is received for one frame of moving image data being played (0.5 points before the local point in this embodiment). Moving image data within a range from the second to 0.5 seconds after the local point) is searched. By this search, the image information constituting the moving image data for 1 second before and after is sequentially compared and collated, and the point where the image information changes most greatly is detected. This change point corresponds to a screen switching point, and the information is temporarily stored in the buffer memory 11. The comparison and collation of the image information here is performed by collating color information of each pixel or collation of pixel distribution of the same color for data representing each temporally adjacent screen.

  Subsequently, in step # 30, the screen is skipped to the change point detected by the search in step # 25, and the playback state is paused.

  Thereafter, in step # 35, it is determined whether or not there is an input operation for executing chapter division (in this embodiment, pressing operation by pressing the chapter division key for about 2 seconds). If there is an input to execute chaptering, that is, if the user confirms the screen of pause and determines that the screen is a screen switching point suitable for chaptering, the process proceeds to step # 40. In step # 40, the information on the change point temporarily stored in the buffer memory 11 is sent to the HDD 12 and written to the hard disk 13. In this way, chapters are divided at the change points for one frame of the moving image data, and chapter division is executed.

  In step # 45, the pause is released and the reproduction is resumed. Thereafter, the process returns to step # 15 and the above-described operation is performed. In step # 35, if there is no input operation for executing chapter division and there is an input operation for restarting playback (pressing a playback key or pause key), that is, the user confirms the pause screen. If it is determined that the screen is inappropriate for chapter division, the process proceeds to step # 45.

  According to such a moving image reproducing device 1, when dividing chapters into moving image data, chapter division points that match the user's intention are automatically detected by searching, and chapter divisions can be executed at those points. . Therefore, it is not necessary to press the frame advance key many times as in the prior art, and this can be done with a simple operation. In addition, since the search for the chapter division is performed at the same time both in the forward search and the backward search including the local point where the search is input, the chapter division point according to the user's intention can be surely obtained.

  In addition, in the above embodiment, the period for determining the data range to be subject to chapter search is 1 second before and after the current time when the search input operation is performed, but as long as it is before and after the current time, It is not limited to that. In the above embodiment, the same key (chapter key) is used as the key used for the chapter search input and the key used for the chapter search so that the input content is distinguished by the pressing time. However, separate dedicated keys may be used. Further, in the above embodiment, the image information constituting the moving image data is adopted as the target for comparison and matching in the chapter search. However, as long as the screen switching point can be determined, for example, audio information is used. You may adopt.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, in the above embodiment, after the chapter search, the screen of the point where the chapter is to be divided is displayed in a paused state, and the chapter division is executed at that point after receiving a new input operation from the user. However, the chapter division may be executed immediately after the chapter division search. In the above embodiment, the HDD recorder has been described as an example of a moving image playback device. However, a DVD recorder that employs a DVD as a recording medium may be used.

  The present invention is useful for a moving image reproduction apparatus that reads out moving image data recorded on a recording medium and reproduces a moving image based on the data.

It is a block diagram which shows schematic structure of the HDD recorder which is one Embodiment of the moving image reproducing device of this invention. It is a flowchart which shows the operation | movement at the time of the chapter division in a moving image reproducing device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Moving image reproducing device 2 System control circuit 3 Memory 4 OSD image generation circuit 5 Operation part 6 Light-receiving part 7 Timekeeping circuit 8 Display part 9 Tuner 10 MPEG encoder 11 Buffer memory 12 Hard disk device 13 Hard disk 14 Information recording head 16 MPEG decoder 17 Output Section 20 Antenna 30 Monitor device

Claims (3)

In a moving image reproducing apparatus for reading out moving image data recorded on a recording medium and reproducing the moving image,
Reproducing means for reading moving image data from a recording medium and reproducing the moving image;
During playback of a moving image by this playback means, a search is made for moving image data within a range of 1 second before and after the local point in accordance with a search input, and a point at which the image information constituting this moving image data changes most greatly Change point detecting means for detecting
Chapter division means for dividing moving image data into chapters at the points detected by the change point detection means,
A moving picture reproducing apparatus, wherein the chapter division unit is executed after skipping to a point detected by the change point detection unit and temporarily stopping, and then receiving a chapter division input. In a moving image reproducing apparatus for reading out moving image data recorded on a recording medium and reproducing the moving image,
Reproducing means for reading moving image data from a recording medium and reproducing the moving image;
During the reproduction of the moving image by the reproducing means, the moving image data within a predetermined time range including the local point is searched according to the input of the search, and the image information or audio information constituting the moving image data is the largest. Change point detecting means for detecting a changing point; and
A moving image reproducing apparatus comprising: chapter division means for dividing moving image data at a point detected by the change point detection means.   3. The moving picture reproducing apparatus according to claim 2, wherein the chaptering unit is executed after skipping to a point detected by the change point detecting unit and temporarily stopping and then receiving a chaptering input. .

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