JP2005176175A - Image processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily delete unnecessary data on a recording medium. <P>SOLUTION: The image processor comprises: a reproduction means for reproducing image data from the recording medium; a control means for controlling the reproduction means to select a predetermined image plane in the image data indicating a series of contents, and (n) ((n) is an integer of ≥1) image planes from before and after the predetermined image plane at set time intervals, and to reproduce image data of the selected predetermined image plane and (n) image planes from the recording medium; and a display control means for displaying the images of the predetermined image plane and the (n) image planes on the same screen in a display device. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an image processing apparatus, and more particularly to processing of image data recorded on a recording medium.

Conventionally, as described in Patent Document 1, digital video cameras that digitally record audio and moving image data have been widely used in homes. Conventionally, a tape has been used as a recording medium for a digital video camera. In recent years, a video camera using a magneto-optical disk capable of random access with a large capacity has appeared instead of a tape. With the advent of magneto-optical discs, when users edit data, editing processing such as erasing unnecessary data from the recorded data or joining the necessary data becomes easy for the user to save. It is now possible to save only the image data that you want to keep on the recording medium.
JP 2001-111963 A

  In a recording / reproducing apparatus that records a plurality of moving images / sounds, a user attempts to record only image data that he / she wants to take and store it on a recording medium. However, if an unexpected event that the user does not expect, or if the recording is started after the event has occurred even if the user expects, the portion of the beginning of the event may be missed. In such a case, it is necessary to start recording before an event occurs in advance, stop recording after the event occurs, and save only the image data that is surely taken.

  SUMMARY OF THE INVENTION An object of the present invention is to solve such problems, to reliably store image data to be recorded on a recording medium, and to easily delete unnecessary data on the recording medium.

  The present invention relates to a reproducing means for reproducing image data from a recording medium, a predetermined screen of the image data indicating a series of contents, and n (n is 1 or more) at time intervals set from before and after the predetermined screen. A control unit for controlling the playback unit to select the selected predetermined screen and n-screen image data from the recording medium, and a display device for displaying the predetermined screen and n-screen image. Display control means for displaying on the same screen.

  After reliably recording the image data required by the user, only the necessary image data can be stored by a simple operation.

  Hereinafter, embodiments of the present invention will be described. FIG. 1 is a block diagram showing a schematic configuration of a recording / reproducing apparatus 100 to which the present invention is applied.

  A recording / reproducing apparatus 100 shown in FIG. 1 generates recording data by compressing a video signal input from the imaging unit 101 in the MPEG system in a recording system including the imaging unit 101, the encoding unit 103, and the memory 105. , And supplied to the memory 105. The control unit 117 controls write / read addresses for the disk 109 through the disk I / F 107 and records / reproduces the supplied data. The control unit 117 reads data from a specified position on the disk 109, which will be described later, and supplies it to the reproduction system. The reproduction system includes a memory 105, a decoding unit 111, and an output unit 113. The control unit 117 outputs the encoded moving image data in the reproduction data to the display control unit 119, and the display control unit 119 reduces the decoded moving image data, adds the superimpose etc., and outputs it to the display unit 121. To do. The operation instructed by the operation unit 115 is output to the control unit 117.

  2 is a side view (FIG. 2A) and a rear view (FIG. 2B) of the recording / reproducing apparatus 100 of the present invention. As shown in FIG. 2, the side surface of the recording / playback apparatus 100 includes a camera lens 201, a viewfinder 203, a rewind button 205, a fast forward button 207, a playback / pause button 209, a stop button 211, a time button 213, and a jog dial 215. The display panel 217 and the like are included. The back of the video camera includes a zoom key 219, a photo button 221, a recording button 223, a recording / playback switching dial 225, and an event button 227.

  Next, the data structure of the disk 109 corresponding to this embodiment will be described. The disk 109 is provided with an area for managing information other than images and sounds. These pieces of management information are recorded as TOC (Table of content) on the innermost circumference of the normal disk 109. For example, in the case of this example, the contents of the management information recorded in the TOC are data recording information on the disk 109, track information, and editing processing information such as GOP deletion described later. The management information is rewritten as needed according to the control result of the control unit 117. The outer periphery of the disk is provided as a recording area for recorded image data.

  In this embodiment, the compression processing employs a moving picture coding experts group (MPEG) system. In the MPEG system, the data compression rate is increased by preparing a frame having only a difference from the previous frame or the previous and subsequent frames. The MPEG system has a GOP (Group of Pictures) structure. Frames that include only the difference between a frame that includes all the data necessary for reproduction and the previous frame or the previous and subsequent frames are managed as one group, and this group unit is called GOP. One GOP is usually a group of frames of 0.5 seconds (about 15 frames), and a GOP structure enables random access in units of GOPs.

  When compressed data is supplied from the recording system, the control unit 117 records the compressed data in the data area of the disk 109 for each GOP unit, and rewrites TOC management information as needed. When an event occurrence signal is input from the operation unit 115, the control unit 117 rewrites the TOC of the disk 109 in order to add event information that an event has occurred to the address of the image data.

  During reproduction, the control unit 117 reads data from the disk 109 through the disk I / F 107 at a communication rate according to the maximum data transfer speed and timing, and records the data in the memory 105. The decoding unit 111 decodes the data recorded in the memory 105 by the decoding unit 111 and outputs the decoded data to the output unit 113.

  The operation of the recording / reproducing apparatus having such a configuration will be described. Here, a case where a subject to be photographed under a condition with poor visibility such as a curve, for example, a car will be described as an example. If the user wants to take a picture of the object to be photographed from a curve with poor visibility, it cannot predict when the car will appear in the field of view.

  Therefore, in order to reliably record the object, the recording / reproduction switching dial 225 is switched to the recording mode from the stage before the car of the object to be photographed appears, and the recording button 223 is pressed to start recording as usual. When an event occurs that a car that is an object to be photographed enters the field of view, the user presses an event button 227 to generate an event occurrence signal. When the event button 227 is operated, the control unit 117 controls the disc I / F 107 so that event information is added and recorded on the image data of the frame that was captured at that time. After the event occurs, the recording is stopped by pressing the recording button 215 after the car passes.

  Next, the operation of the recording / reproducing apparatus 100 during the trimming process for deleting unnecessary portions of a series of contents recorded on the disc 109 using the event information added at the time of recording in this way is shown in the flowchart and FIG. A display panel example 4 will be described.

  When the content to be trimmed is selected by the operation unit 115 and the trimming mode is instructed, the control unit 117 checks the display interval of the reduced image in the designated content (S301). The display interval can be arbitrarily set as will be described later, but is initially set according to the length of the captured content. For example, 30 seconds is set for 3 minutes of image data, and 60 seconds is set for 30 minutes of image data.

  Next, based on the TOC, the recording address of the GOP including the frame to which the event information is added is detected from the designated content (S302), and further, before and after the frame to which the event information is added. The image data of n screens are selected at the intervals set in S301 (S303). In this embodiment, as shown in FIG. 4, nine screens of reduced images are displayed per screen, so that four screens are selected at intervals set from the front and the back of the event information screen, here at intervals of one second.

  Next, the GOP data including the event information screen and the n screen image data selected in this way is reproduced from the disk 109 and decoded, and the selected event information screen and the n screen images before and after the event information are reduced. Then, the display control unit 119 is controlled to display on the same screen in the form shown in FIG.

  FIG. 4 shows a reduced image list display screen displayed on the display panel 217 at this time. In FIG. 4, reduced images before and after the event are displayed at 60 second intervals.

  Next, in the time setting zone 419 of the display panel 217, the user can reset the time interval using the time button 213 and the jog dial 215 (S306). For example, each time the time button 213 is pressed, the time interval is switched to 1 second, 5 seconds, 10 seconds, 60 seconds, and 120 seconds, and the time interval is further finely set by operating the jog dial 215. As shown in FIG. 4B, after the time interval is set, resetting such as further shortening or widening the time interval is also possible. In this example, the time interval is shortened from 60 seconds to 15 seconds. If there is an instruction to change the display interval in this way, the process returns to S301, and the image data of n screens before and after the event is reproduced again at the set interval, and the reduced images are displayed as a list.

  As a result of changing the display interval in this way, when a reduced image in the range desired by the user is displayed centered on the event occurrence time, the start point and end point images of the portion to be saved are selected from the reduced image. (S307).

  For example, as shown in FIG. 4B, when a scene where an unnecessary road is moving is cut out from the reduced images before and after the event occurrence and the range of image data in which a car appears is selected, the jog dial 215 is operated. Then, the respective pointers of the storage start point 423 and the storage end point 425 are moved, and the storage start point 423 is aligned with the reduced image 405 and the storage end point 425 is aligned with the reduced image 413. In this state, when the jog dial 215 is operated and deletion is instructed, the control unit 117 controls the disk I / F 107 to transfer data other than the range from the arbitrary storage start point 423 to the storage end point 425 specified by the pointer. The TOC recorded on the disk 109 is rewritten so as to be deleted from the 109.

  In this embodiment, when the content recording time is short, there is not much need to specify the storage end point 425. In this case, only the storage start point 423 may be set. On the contrary, when the recording time is long, the display panel 217 is provided with a scroll function of the jog dial 215 to facilitate image selection. Further, as an operation on the display panel 217, a touch panel structure configured by detecting coordinate position information to which pressure is applied may be used.

  As described above, according to the present embodiment, after the image data required by the user is reliably recorded, only the necessary image data can be stored by a simple operation.

It is a figure which shows the structure of the recording / reproducing apparatus to which this invention is applied. 1 is an external view of a recording / reproducing apparatus to which the present invention is applied. It is a flowchart which shows a trimming process. It is a figure which shows the display screen in a trimming process.

Claims (10)

Reproduction means for reproducing image data from a recording medium;
N (n is an integer greater than or equal to 1) screens are selected at a predetermined screen of the image data indicating a series of contents and time intervals set before and after the predetermined screen, and the selected predetermined screen and n Control means for controlling the reproduction means to reproduce the image data of the screen from the recording medium;
An image processing apparatus comprising: a display control unit configured to display the predetermined screen image and the n-screen image on the same screen in the display device.   A setting unit configured to arbitrarily set the time interval; and when the time interval is changed by the setting unit, the control unit selects the n screen again based on the changed time interval. The image processing apparatus according to claim 1.   The image processing apparatus according to claim 2, wherein the setting unit selects an arbitrary time unit from a plurality of predetermined time units.   The image processing apparatus according to claim 1, wherein the control unit sets the time interval according to a recording time length of the series of contents.   A selection unit that arbitrarily selects a screen corresponding to a range to be saved among the screens displayed on the display device, and the control unit further selects the image data of the series of contents by the selection unit. The image processing apparatus according to claim 1, wherein image data outside a range corresponding to the displayed screen is deleted from the recording medium.   The reproduction means reproduces the image data based on management information for managing image data recorded on the recording medium, and the control means is an image outside the range corresponding to the screen selected by the selection means. 6. The image processing apparatus according to claim 5, wherein the content of the management information is changed to delete data from the recording medium.   6. The image processing apparatus according to claim 5, wherein the image data is encoded and recorded, and the control unit deletes the image data for each unit of encoding.   The image processing apparatus according to claim 1, wherein the display control unit displays the image of the n screen before and after the predetermined screen.   The image processing apparatus according to claim 1, wherein the control unit detects the predetermined screen based on identification information indicating the predetermined screen.   A recording unit configured to record the image data on the recording medium; and an operation instruction unit operable during recording of the image data by the recording unit. The recording unit is further configured according to an instruction from the operation instruction unit. The image processing apparatus according to claim 9, wherein the identification information is generated, and the identification information is added to a screen corresponding to an instruction from the operation instruction unit and recorded on the recording medium.

Images