JP2005080060A - Image reproducing device and image reproduction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily instruct a desired still image. <P>SOLUTION: By a digital camera 10 in this embodiment, when a recording instruction of a still image is performed during the reproduction of a moving image, still image data are created from moving image data of moving images within front and rear predetermined ranges including a moving image displayed on an LCD 34 when the recording instruction of the still image is inputted and recorded in a recording medium. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an image reproduction device and an image reproduction method, and more particularly to an image reproduction device and an image reproduction method for reproducing a moving image.

  2. Description of the Related Art Conventionally, there has been known an image reproducing apparatus that obtains moving image data by shooting and reproduces a moving image of the obtained moving image data. A technique for obtaining still image data of an arbitrary still image during moving image shooting in such an image reproducing apparatus is known (see, for example, Patent Document 1). According to the above technique, in an imaging / recording apparatus that performs moving image shooting, moving image data is stored in a recording medium by moving image shooting, and when a focus and an aperture are in a predetermined state during moving image shooting, shooting under the state is performed. The acquired image data is stored as still image data in a recording medium different from the recording medium. According to this technology, a high-quality still image can be easily obtained during moving image shooting.

In the imaging and recording apparatus, it is desirable to obtain an arbitrary still image from the reproduced moving image when the moving image is reproduced. As such a technique, when a release switch instructing recording of a still image is pressed during moving image reproduction on a display screen, image data of an image displayed on the display screen is recorded on a memory card. It is known (see, for example, Patent Document 2).
Japanese Patent Laid-Open No. 11-187350 (pages 4-5, FIG. 1) JP 2002-165174 (4th page, FIG. 3)

  However, if still image recording is instructed while a moving image is being reproduced, there is a risk that the timing of the still image recording instruction input by the user and the desired still image display timing may be shifted, and unintended image data is recorded. There was a fear.

  The present invention has been made in consideration of the above facts, and an object of the present invention is to provide an image reproduction apparatus and an image reproduction method capable of easily indicating a desired still image in an image reproduction apparatus for reproducing a moving image.

  In order to achieve the above object, an image reproducing apparatus according to the present invention includes a reproducing unit that reproduces a moving image of moving image data, and the moving image data to be stored as a still image during reproduction of the moving image to the reproducing unit. An instruction means for instructing a position; a creation means for creating still image data from the moving image data for a predetermined time based on the position of the moving image data instructed by the instruction means; and the creation means Storage means for storing the created still image data.

  The image reproducing apparatus of the present invention includes a reproducing unit, and reproduces a moving image of moving image data. The instructing means is for instructing the position of moving image data to be stored as a still image during moving image reproduction to the reproducing means. The instructed position is the position of the moving image data of the moving image being reproduced. The creation unit creates still image data from the moving image data for a predetermined time before and after the reference position, for example, based on the position of the designated moving image data. Therefore, the moving image data at the designated position is included, and still image data is created for a predetermined time near the designated position. The still image data created by the creating means is stored in the storage means.

  In this way, when the position of moving image data to be stored as a still image is instructed during moving image reproduction, the still image data is extracted from the moving image data for a predetermined time based on the position of the instructed moving image data. Can be created and stored. For this reason, still image data within a predetermined time including a still image at a position intended by the user near the designated position can be created and stored.

  The creation means can use the range of the instruction time instructed to continue as a reference for the position of the moving image data when the instruction means instructs to continue during the moving image reproduction.

  When the instruction of the position of the moving image data is continuously given by the instruction means during the reproduction of the moving image to the reproduction means, the position (time) of the moving image as a desired still image intended by the user during the continuation instruction. The certainty is high. Therefore, if the instruction time range instructed by the instruction means is used as a reference in correspondence with the position of the moving image data described above, the creating means can perform a predetermined time with reference to the instruction time range instructed to continue. Still image data can be created from moving image data. For this reason, still image data with higher accuracy including a user-desired still image can be obtained.

  The moving image data can be composed of difference data composed of difference between image data of a frame image and the frame image.

  The moving image data to be reproduced to the reproducing means can be composed of image data of a frame image and difference data composed of differences between the frame images. Difference data alone cannot be a frame image (still image), and original data is required. Further, since the difference data is a difference from the original data to a certain time, a frame image can be created based on the difference from the original data until a certain time with respect to the original frame image based on the original data. Thereby, the capacity of the moving image data can be made smaller than that composed of a large number of still image data.

  The instructing unit includes an interval instructing unit for instructing a creation interval of still image data in the moving image data, and the creating unit creates still image data at an interval instructed by the interval instructing unit from the moving image data. can do.

  By instructing the creation interval of the still image data by the interval instruction unit, the creation unit can create only the still image data of the creation interval. Therefore, it is possible to freely set the number of creations and time intervals for still image data from moving image data, and to efficiently create still image data.

  According to another aspect of the present invention, there is provided an image reproducing apparatus for reproducing a moving image of moving image data, and an instruction unit for instructing a position of the moving image data to be stored as a still image during moving image reproduction to the reproducing unit. And storage means for storing, in association with each other, position data indicating the position of the moving image data instructed by the instruction means, and identification data capable of identifying the moving image data.

  An image reproduction apparatus according to another invention reproduces a moving image of moving image data to a reproducing unit. When the position of the moving image data to be stored as a still image is instructed by the instruction unit, the position data indicating the position of the moving image data instructed by the instruction unit is associated with identification data that can identify the moving image data. Stored in storage means.

  Therefore, the position of the moving image data based on the identification data can be specified by the position data, and it is possible to provide effective information for creating a still image at the position.

  Note that still image data within a predetermined time including a still image at a position intended by the user can be created and stored by the following image reproduction method. More specifically, the present invention relates to an image reproduction method for reproducing a moving image of moving image data, instructing a position of the moving image data to be stored as a still image during moving image reproduction, Still image data is created from the moving image data for a predetermined time based on a position, and the created still image data is stored.

  As described above, according to the image reproducing device and the image reproducing method of the present invention, the position of moving image data to be stored as a still image can be indicated during moving image reproduction, and the instructed moving image Since still image data can be created from moving image data for a predetermined time based on the position of the data, it is easy to create and store still image data within a predetermined time including a still image at a position intended by the user. Has the effect of being able to.

[First Embodiment]
An embodiment of a digital camera 10 according to an image reproducing apparatus of the present invention will be described with reference to the drawings.

  As shown in FIG. 1A, a lens 14 and a finder 16 for visually confirming a photographing range and the like are provided on the front side of the housing 12 of the digital camera 10. A slot 22 into which a recording medium 20 such as a smart medium can be loaded is provided on the side surface of the housing 12. A power switch 26, a mode dial 24 and a release switch 28 are provided on the upper surface of the housing 12. The release switch 28 is pressed by the user when performing imaging. The release switch 28 is pressed by the user when recording a user's desired still image from a moving image displayed on an LCD for displaying an image to be described later. The power switch 26 is used when the user switches power supply to each part of the digital camera 10 or switching of supply stop. The mode dial 24 is a moving image shooting mode for obtaining moving image data of moving images by shooting, a moving image reproduction mode for displaying moving images obtained by shooting on an LCD 34 described later, and still image data of still images from the reproduced moving images. This is for selecting a process desired by the user from a creation range setting mode or the like that accepts selection of a creation range of a still image to be created.

  In addition, as shown in FIG. 1B, an LCD 34 is provided on the back surface of the housing 12. Various selection buttons such as a menu button 38, an up / down arrow key 40, and an execution button 42 are provided in the vicinity of the LCD 34. In this embodiment, the menu button 38, the up / down arrow key 40, the execution button 42, the power switch 26, the mode dial 24, and the release switch 28 are configured to function as the switch 36. The menu button 38 is used when the user displays various menu items on the LCD 34. The up / down arrow key 40 is used when the user selects an arbitrary menu item from various menus displayed on the LCD 34. The execution button 42 is used when the user instructs execution of each item.

  FIG. 2 shows a main configuration of the digital camera 10 according to the present embodiment as a block diagram.

  The digital camera 10 includes a CCD (Charge Coupled Device) 50. The CCD 50 is for converting the reflected light from the subject obtained by the lens 14 into analog image data (hereinafter referred to as image data) indicating a photographed image and outputting it. The digital camera 10 also includes a CDS (Correlated Double Sampling) 52, an analog / digital converter (hereinafter referred to as an A / D converter) 54, and a signal processing unit 56. The CCD 50, the CDS 52, the A / D converter 54, and the signal processing unit 56 are connected to the bus 51, and are configured to exchange data and commands with each other.

  The CDS 52 adjusts the signal level of each color signal by subjecting the output signal indicating the subject image output from the CCD 50 to correlated double sampling processing and color separation processing to each color signal of R, G, B. It is. The A / D converter 54 converts the analog signal processed by the CDS 52 into a digital signal and outputs it to the signal processing unit 56. The analog image signal indicating the subject image output from the CCD 50 is processed by the CDS 52, converted into a digital image signal by the A / D converter 54, and then input to the signal processing unit 56 as image data.

  A control unit 60 is connected to the bus 51. The controller 60 controls the overall operation of the digital camera 10 and includes a microcomputer including a CPU, an EEROM, and a RAM (not shown).

  In addition, a storage unit 62, an I / O 64, and a creation unit 70 are connected to the bus 51. The storage unit 62 mainly stores various data including still image data and moving image data obtained by photographing, processing routines described later, and the like. In the present embodiment, the digital camera 10 will be described as obtaining moving image data by shooting.

  A switch 36 is connected to the I / O 64. The switch 36 is for inputting various instructions. In addition, a media control unit 66 and a display control unit 68 are connected to the bus 51. The control unit 60, the signal processing unit 56, the media control unit 66, the I / O 64, the storage unit 62, and the display control unit 68 are configured to exchange data and commands with each other via the bus 51.

  The signal processing unit 56 performs predetermined digital signal processing on the image data input from the A / D converter 54, and includes a gain adjustment circuit, a gamma correction circuit, and a luminance / color difference signal processing circuit (YC). Processing circuit). The image data input from the A / D converter 54 is amplified by a gain adjustment circuit, then subjected to gamma correction processing in a gamma correction circuit (not shown), and luminance (Y) in a YC processing circuit (not shown). Signal) and color difference signals (Cr, Cb signals) are converted into predetermined digital signal processing and stored in the storage unit 62.

  The media control unit 66 is for reading and writing various data including moving image data with respect to the recording medium 20. When the recording medium 20 is loaded into the slot 22, it is connected to the media control unit 66, and data can be exchanged. The moving image data stored in the storage unit 62 is compressed by the compression / decompression unit 57 by a predetermined compression method and then recorded on the recording medium 20 via the media control unit 66.

  In the present embodiment, description will be made assuming that MPEG (Moving Picture Experts Group) is adopted as a standard encoding method for moving image compression, but the present invention is not limited to such a compression method.

  The creation unit 70 is for creating still image data from moving image data in a predetermined range based on a position designated by the user from moving image data recorded on the recording medium 20. The position where the still image data is created is input by pressing the release switch 28 during the moving image reproduction process on the LCD 34, which will be described in detail later. Still image data created as still image data of a still image by the creation unit 70 is recorded on the recording medium 20.

  The display control unit 68 is for displaying the moving image of the moving image data recorded on the recording medium 20 and various menu items on the LCD 34.

  In the present embodiment, the moving image data obtained by shooting is described as being stored in the recording medium 20 after being stored in the storage unit 62, but temporarily stored in a RAM (not shown). You may make it memorize | store in the recording medium 20 later.

  The LCD 54 corresponds to the playback means of the image playback apparatus of the present invention, the release switch 28 corresponds to the instruction means and the interval instruction means, the creation unit 70 corresponds to the creation means, and the recording medium 20 stores the data. It corresponds to means and storage means.

  Next, the operation of the digital camera 10 according to the above embodiment will be described.

  FIG. 3 shows a processing routine executed by the control unit 60. In the digital camera 10, the processing routine shown in FIG. 3 is executed every predetermined time, and the process proceeds to Step 100.

  In step 100, a mode state grasping process is executed. The mode state can be grasped by reading data representing the state of the mode dial 24 stored in the storage unit 62. The state of the mode dial 24 includes a state in which a moving image shooting mode is selected by an instruction of the mode dial 24 by a user, a state in which a moving image playback mode is selected, and a state in which a creation range setting mode is selected. Data representing these states is input by operating the mode dial 24 after the power is turned on. The input data is stored in the storage unit 62 as data representing the state of the mode dial 24. By confirming the data representing the state of the mode dial 24 stored in the storage unit 62, the state of the mode dial 24 can be confirmed.

  Next, in step 102, it is determined whether or not the moving image shooting mode is set. The determination in step 102 can be made by determining whether or not the data indicating the state of the mode dial 24 stored in the storage unit 62 is data indicating the moving image shooting mode.

  If the determination in step 102 is affirmative, the process proceeds to step 104, and the negative determination is repeated until a moving image shooting instruction is issued. The determination at step 104 can be made by determining an input signal from the release switch 28. If the result in step 104 is negative, this routine may be terminated.

  Next, in step 106, a moving image shooting process is executed. The process of step 106 is to perform various adjustments by the CCD 50 when photographing a subject and continuously obtain photographed images. For example, the shutter speed, aperture value, and the like that can obtain a subject image for 10 frames per second are set, and continuous image data is sequentially stored in a plurality of buffers (not shown) provided in the storage unit 62, and then these are stored. The image data is compressed by the compression / decompression unit 57 into the MPEG system which is a standard compression system for moving image compression.

  Next, in step 108, the moving image data obtained by the moving image photographing process in step 106 is sequentially recorded on the recording medium 20, and then this routine is terminated. That is, one MPEG file is recorded on the recording medium 20 by one moving image shooting.

  On the other hand, if the result in Step 102 is negative, the process proceeds to Step 124, and it is determined whether or not the creation range setting mode is selected. The determination in step 124 can be made by determining that the data indicating the mode state stored in the storage unit 62 is data indicating a creation range setting instruction.

  If the determination in step 124 is affirmative, the process proceeds to step 125, and the negative determination is repeated until the creation range is input. If the determination is affirmative, the process proceeds to step 126. The creation range indicates a creation range in which still image data of a still image is created from moving image data recorded on the recording medium 20 by moving image shooting processing. In the present embodiment, it is assumed that a moving image is reproduced on the LCD 24 at a constant speed in a moving image reproduction process to be described later, and a still image recording instruction by a user as a creation range from the moving image displayed on the LCD 24 at the time of reproducing the moving image. The playback time before and after the input as a base point is set as a range for creating still image data. For this reason, for example, a reproduction time such as 1 second or 2 seconds is set as the creation range.

  In the present embodiment, as the capture condition, the playback time before and after the still image recording instruction input is set as the creation range for creating the still image data will be described. However, the number of frames, the data capacity, etc. may be set.

  The determination in step 125 can be determined by receiving a signal output by operating the up / down arrow key 40 by the user. For example, an item that prompts the user to set the creation range of the still image data of the still image is displayed on the LCD 34 to prompt the user to input the creation range. Then, when the execution button 42 is pressed after the signal indicating the creation range is input by the operation of the up / down arrow key 40, the creation range information indicating the creation range may be output. For example, with the up / down arrow key 40, a value indicating a different creation range is displayed on the LCD 34 by pressing the up / down arrow part or the left / right arrow part, and further, the execution button 42 is pressed and displayed on the LCD 34. Creation range information corresponding to the value indicating the creation range is input.

  In the next step 126, this routine is terminated after the memory processing for storing the creation range information indicating the creation range of the still image data input in step 125 in the storage unit 62 is executed.

  Note that predetermined data may be preset as initial values in the still image data creation range information. Further, the initial value may be updated by the processing in steps 124 to 126 described above.

  On the other hand, if the determination in step 124 is negative, the process proceeds to step 110 to determine whether or not the moving image playback mode is set. The determination in step 110 can be made by determining whether or not the data representing the state of the mode dial 24 stored in the storage unit 62 is data representing the moving image reproduction mode.

  When the result in step 110 is negative, this routine is terminated. When the result is affirmative, the process proceeds to step 112. In step 112, the negative determination is repeated until a moving image reproduction instruction is given. The determination in step 112 can be made by determining signal input by pressing the release switch 28.

  Next, in step 114, a reproduction process is executed. In the process of step 114, the moving image data recorded on the recording medium 20 is MPEG expanded by the compression / decompression unit 57, and the expanded image is displayed on the LCD 34 while being sequentially written in a buffer (not shown). It is displayed on the LCD 34.

  Next, in step 116, the negative determination is repeated until a still image recording instruction is given. The determination in step 116 can be made by determining the input of a still image recording instruction signal by pressing the release switch 28. In the present embodiment, as described above, the case where the still image recording instruction signal is input by pressing the release switch 28 during the moving image reproduction process on the LCD 34 will be described. A switch for performing an image recording instruction signal may be separately provided in the housing 12 and input by a pressing operation by a user of the switch.

  In step 117, a recording position information memory process is executed. In step 117, when the still image recording instruction signal is input in step 116, the position of the moving image displayed on the LCD 34 in the moving image data recorded on the recording medium 20 in step 108 can be specified. The recording position information is stored in the storage unit 62.

  Next, in step 120, a process of grasping moving image data corresponding to the creation range and recording position of still image data to be recorded on the recording medium 20 is executed. The process of step 120 is executed based on the still image data creation range information stored in the storage unit 62 and the recording position information. Specifically, in the present embodiment, from the moving image data recorded on the recording medium 20, the recording position information is used as a reference, the recording position serving as the reference is included, and the range corresponding to the creation range information before and after To grasp the moving image data.

  In this embodiment, the case where the moving image data within the set creation range is ascertained based on the recording position information will be described. However, the recording range information is used as a reference before or after the creation range. You may make it grasp | ascertain the corresponding moving image data.

  Next, in step 122, still image data creation processing of a still image for creating still image data from the moving image data grasped in step 120 is executed. Next, in step 124, the still image data of the still image created in step 122 is recorded on the recording medium 20, and then this routine is finished.

  As described above, according to the digital camera 10 of the present embodiment, when a still image recording instruction is given during reproduction of a moving image, the moving image displayed on the LCD 34 when the still image recording instruction is input is displayed. Still image data can be created from moving image data of a moving image within a predetermined range including before and after, and recorded on a recording medium. Therefore, since still image data of a still image can be obtained from the previous and next moving images including the displayed moving image when an instruction is input, the still image data of the still image that surely includes the still image data desired by the user can be obtained. Can be obtained.

  In addition, since the created still image data can be recorded on a recording medium, still image data created from moving image data can be provided so that it can be separately processed by another device other than a digital camera.

  In the present embodiment, the case where the digital camera 10 is used as the image reproducing device has been described. However, the image reproducing device is not limited to the digital camera, and a video camera having a function of reproducing moving image data, The present invention can be applied to various devices having a playback function such as a video deck and a monitor.

  Further, in the present embodiment, a case has been described in which moving image data is reproduced after the moving image data is obtained by shooting. However, the moving image data to be reproduced is limited to that acquired by the digital camera. is not. For example, moving image data obtained by a device for acquiring moving images, such as another video camera or a digital camera, is recorded on the recording medium 20 and is reproduced by mounting the recording medium 20 on the digital camera 10. You may make it do.

  In this embodiment, the case where the moving image data compressed by the MPEG method is used has been described. However, the moving image data is not limited to the MPEG, and is, for example, motion JPEG or AVI. Also good.

  In the present embodiment, before the moving image playback process, the creation range information indicating the still image data creation range of the still image is stored in the storage unit 62 by the processing of step 124 to step 126, and the moving image playback process is performed. A case has been described in which when a still image recording instruction is given, moving image data within the creation range is recorded on the recording medium 20 as still image data from the determination of the input of the instruction signal. However, the still image data creation range may be input by determining the continuous input of the still image recording instruction signal during moving image reproduction on the LCD 34. In this case, after the determination of step 116, the continuous input time of the still image recording instruction signal by the continuous pressing operation of the release switch 28 may be measured. Further, the measured continuous input time may be stored in the storage unit 62 as still image data creation range information, and then the process may proceed to step 120.

  Note that this continuous input time is a timer built in the CPU whose illustration of the control unit 60 is omitted after the processing of step 116 when a still image recording instruction signal is input by pressing the release switch 28 in step 116. The measurement may be started until the input of the still image recording instruction signal is interrupted.

  In this case, the capture condition setting process in steps 124 to 126 can be omitted.

  In this way, the still image creation range can be provided so that it can be easily changed by the user's adjustment of the continuous pressing instruction of the release switch 28 during moving image reproduction.

[Second Embodiment]
In the above embodiment, when a signal indicating a still image recording instruction is input, still image data is generated from the moving image data within the previous and next generation range with reference to the position in the moving image data to which the signal is input. Explained the case. In the present embodiment, a case will be described in which still image data at a position that matches a specific condition is created from moving image data within the creation range.

  Here, in the present embodiment, as in the first embodiment, moving image data obtained by moving image shooting processing and stored in the recording medium 20 will be described as being compressed by the MPEG method. For example, as shown in FIG. 5, the MPEG image has a screen group structure having several screen groups (GOP (Group Of Pictures)) between a sequence header and a sequence end. This GOP has a structure having a plurality of picture frames (encoded screen data) after the GOP header. There are three types of picture frames: an I picture 90, a P picture 92, and a B picture 94. That is, in MPEG, these three types are predetermined. The I picture 90 is image data obtained by intra-coding all of the screen information included in the image frame, and the P picture 92 is obtained by calculating the difference with reference to the immediately preceding I picture 90 or P picture 92 and compressing the image data. The B picture 94 is image data that is bidirectionally predicted from the preceding and succeeding I pictures 90 or P pictures 92.

  FIG. 5 shows a case where the number N of pictures in the GOP is 15 and the period in which the I picture 90 or the P picture 92 appears is 3, but the first picture of the GOP is the I picture 90. At the same time, the value is not limited to the above value as long as the last GOP is the I picture 90 or the P picture 92 in the order of arrangement of the original images.

  In the present embodiment, the MPEG I picture, P picture, or B picture is set as the specific condition. Thus, a picture type image designated from a moving image within the capture condition range is designated as a target to be created as a still image.

  Since the digital camera according to the present embodiment has the same configuration as that of the digital camera 10 according to the first embodiment (see FIG. 1), the same portions are denoted by the same reference numerals and detailed description thereof is omitted. In the present embodiment, the mode dial 24 of the plurality of switches functioning as the switch 36 is further provided in addition to the moving image shooting mode, the moving image playback mode, and the creation range setting mode described in the above embodiment. The description will be made assuming that the specific condition setting mode is provided.

  In the present embodiment, the mode selection is described using the mode dial 24, but different mechanisms such as switches and buttons may be provided for each instruction mode.

  Next, the operation of this embodiment will be described.

  An example of the operation of the digital camera is substantially the same as the flowchart shown in FIG. The difference is that in the first embodiment, in the process of creating still image data from the moving image data in the creation range in steps 116 to 124, all the moving image data corresponding to the creation range is targeted. Still image data was created. In the present embodiment, only the image data corresponding to a specific condition designated by the user is created as still image data from the moving image data corresponding to the creation range.

  As shown in FIG. 4, in the digital camera of the present embodiment, the processing of Step 100 to Step 108 is executed at predetermined time intervals in the same manner as in the first embodiment, and when a moving image shooting instruction is given, MPEG is performed. The moving image data compressed by the method is recorded on the recording medium 20. Similarly, if the result in step 102 is negative, the processing from step 124 to step 126 is executed, and the creation range information indicating the still image data creation range of the still image is stored in the storage unit 62.

  On the other hand, if the result in Step 124 is negative, the process proceeds to Step 200, where it is determined whether or not a specific condition setting instruction to be recorded as a still image has been issued. The determination in step 200 can be made by determining whether data indicating the specific condition setting mode is stored in the storage unit 62. For example, when the specific condition setting mode is selected by the user operating the mode dial 24, the storage unit 62 stores data indicating that the selected state of the mode dial 24 is in the state in which the specific condition setting mode is instructed. What should I do?

  If the determination in step 200 is affirmative, the process proceeds to step 202. The negative determination is repeated until a specific condition is input. If the determination is affirmative, the process proceeds to step 204. The determination in step 202 can be determined by a signal input output by the user operating the up / down arrow key 40. For example, an item list for selecting an I picture, a P picture, or a B picture is displayed on the LCD 34 as an item for setting a specific condition. When the execution button 42 is pressed after any one of the I picture, P picture, and B picture is selected by operating the up / down arrow key 40, a signal indicating the type of the selected picture is displayed. May be output.

  In step 204, the data indicating the picture type input in step 202 is stored in the storage unit 62, and then this routine is terminated.

  On the other hand, if the result in Step 200 is negative, the process proceeds to Step 110, and, as in the first embodiment, the processing of Step 110 to Step 120 is performed, and when the still image recording instruction is executed, The recording position information is stored in the storage unit 62. Furthermore, based on the recording position information and the still image data creation range information stored in the storage unit 62, moving image data corresponding to the still image data creation range and the recording position to be recorded on the recording medium 20 Grasping process is executed.

  Next, in step 208, a process for creating still image data that matches the specific condition is executed from the moving image data grasped in step 120. In the process of step 208, image data corresponding to data indicating the type of picture stored in the storage unit 62 is grasped from the moving image data grasped in step 120, and still image data is created from the grasped image data. Is. By the processing in step 208, still image data is created from the image data of the designated I picture, B picture, or P picture. The created still image data is recorded on the recording medium 20 in the next step 210.

  In the present embodiment, the case where an I picture, a P picture, or a B picture is set as a specific condition has been described. However, the present invention is not limited to such a form. For example, when handling moving image data consisting of a plurality of image frames, the number of frames indicating the capture interval of image frames stored as still images may be set. Also, it may be a setting such as a time or a data capacity indicating the moving image data capturing interval. In this way, still image data can be created and obtained from moving image data at user-desired intervals.

  As described above, according to the digital camera of the present embodiment, image data that further satisfies a specific condition can be obtained as still image data of a still image from moving image data corresponding to the still image data creation range. Therefore, it is possible to instruct an image to be recorded as still image data in more detail. Also, the memory can be used effectively.

[Third Embodiment]
In the above embodiment, a case has been described in which, when data indicating a still image recording instruction is input, still image data is created from moving image data within the still image data creation range and recorded on the recording medium 20. In the present embodiment, a case will be described in which only identification data that can identify moving image data within the still image data creation range is recorded on the recording medium 20.

  Since the digital camera according to the present embodiment has substantially the same configuration as that of the first embodiment, the same reference numerals are given to the same portions, and detailed description thereof is omitted. The digital camera according to the present embodiment has the same configuration as that of the digital camera 10 according to the first embodiment (see FIG. 1), and thus the description thereof is omitted.

  Next, the operation of this embodiment will be described. An example of the operation of the digital camera of the present embodiment is substantially the same as the flowchart shown in FIG. The main difference is that only the identification data that can identify the moving image data within the still image data creation range is stored in the recording medium 20 in the process of recording the still image data in the recording medium 20 in step 124. .

  As shown in FIG. 6, in the digital camera according to the present embodiment, the processing from step 100 to step 108 is executed every predetermined time as in the first embodiment, and when a moving image shooting instruction is given, Image data is recorded on a recording medium. Similarly, when the result in Step 102 is negative, the processing from Step 124 to Step 126 is executed, and the creation range information indicating the creation range of still image data is stored in the storage unit 62.

  If the determination in step 124 is negative, the process proceeds to step 110, and the processing from step 110 to step 117 is executed as described above, and the recording position information indicating the recording position of the still image is stored in the storage unit 62.

  Next, in step 300, the creation range information and the recording position information, which are stored in the storage unit 62 and indicate the creation range of still image data to be recorded on the recording medium 20, are stored in the original (recording medium 20. The moving image data is recorded on the recording medium 20 in association with the identifiable identification information.

  On the other hand, if the result in step 110 is negative, the process proceeds to step 303, where it is determined whether or not a recording image selection instruction has been issued. The recorded image selection instruction includes identification data that can be used to identify moving image data, creation range information of still image data in the moving image data, and recording position information that are stored in the recording medium 20 by the processing of step 300 above. In response to this, an instruction for creating still image data of a still image and recording it on the recording medium 20 is given. The determination in step 303 can be made by determining whether or not data indicating the recording image selection instruction mode is stored in the storage unit 62. This data may be stored in the storage unit 62 by operating the mode dial 24, for example.

  If the result in step 303 is negative, the routine ends. If the result is affirmative, the process proceeds to step 304, and identification data that can identify video data from the video data stored in the storage unit 62, and the video data In accordance with the still image data creation range information and the recording position information in FIG. More specifically, as in the first embodiment, still image data is created from moving image data within a creation range based on the recording position.

  In step 305, the still image of one of the still image data created in step 305 is displayed on the LCD 34.

  Next, in step 306, it is determined whether or not a recording instruction has been given within a predetermined time. The determination in step 306 can be determined by inputting an execution signal from the execution button 42. For example, when recording still image data of the still image on the recording medium 20 while the still image is displayed on the LCD 34 in step 304, a message indicating that the execution button 42 is instructed is displayed, and the execution button is displayed. The instruction input by 42 may be prompted.

  If the determination in step 306 is affirmative, the process proceeds to step 308, the still image data of the still image displayed on the LCD 34 is recorded on the recording medium 20, and the process proceeds to step 310. If the result in step 306 is negative, the process proceeds to step 310.

  In step 310, it is determined whether still image data of other still images other than those displayed on the LCD 34 in step 305 is stored in the storage unit 62. If the determination is affirmative, the process returns to step 304. This routine ends.

  As described above, according to the digital camera of the present embodiment, identification data that can identify moving image data, still image data creation range information in the moving image data, and recording position information are associated and recorded. Since it can record on the medium 20, the memory of the recording medium 20 can be used effectively. In addition, information capable of creating still image data can be easily provided.

  Further, still image data is created from the moving image data within the creation range based on the recording position from the moving image data, creation range information, and recording position information stored in the recording medium 20, and a recording instruction is further issued. If it is made, the still image data of the still image corresponding to the recording instruction can be stored in the recording medium 20, so that the still image data of the still image can be stored efficiently.

  The identification data that can identify the moving image data, the still image data creation range information in the moving image data, and the recording position information may be stored in the storage unit 62 in association with each other.

BRIEF DESCRIPTION OF THE DRAWINGS It is an example of the external view of the digital camera which concerns on this Embodiment, (A) is a front view of the digital camera which concerns on embodiment of this invention, (B) is the digital camera which concerns on embodiment of this invention FIG. It is a block diagram which shows the main structures of the digital camera which concerns on this Embodiment. 3 is a flowchart showing a flow of processing in the digital camera according to the first embodiment. It is a flowchart which shows the flow of a process in the digital camera which concerns on 2nd Embodiment. It is a schematic diagram which shows the structure of MPEG. It is a flowchart which shows the flow of a process in the digital camera which concerns on 3rd Embodiment.

Explanation of symbols

10 Digital Camera 20 Recording Media 28 Release Switch 40 Up / Down Arrow Keys 70 Creation Section

Claims (6)

Playback means for playing back a moving image of moving image data;
Instruction means for instructing the position of the moving image data to be stored as a still image during moving image reproduction to the reproducing means;
Creating means for creating still image data from the moving image data for a predetermined time determined in advance with reference to the position of the moving image data instructed by the instruction means;
Storage means for storing still image data created by the creation means;
An image reproducing apparatus comprising:   2. The creation unit according to claim 1, wherein when the instruction unit instructs to continue during playback of the moving image, a range of the instruction time instructed to continue is used as a reference of the position of the moving image data. The image reproducing device described.   The image reproduction apparatus according to claim 1, wherein the moving image data is configured by difference data including a difference between the image data of a frame image and the frame image.   The instructing unit includes an interval instructing unit for instructing a creation interval of still image data in the moving image data, and the creating unit creates still image data at an interval instructed by the interval instructing unit from the moving image data. The image reproduction device according to claim 1, wherein the image reproduction device is a device. Playback means for playing back a moving image of moving image data;
Instruction means for instructing the position of the moving image data to be stored as a still image during moving image reproduction to the reproducing means;
Storage means for associating and storing position data indicating the position of the moving image data instructed by the instruction means and identification data for identifying the moving image data;
An image reproducing apparatus comprising: An image reproduction method for reproducing a moving image of moving image data,
Instructing the position of the moving image data to be stored as a still image during moving image reproduction,
Creating still image data from the moving image data for a predetermined time based on the position of the instructed moving image data,
Store the created still image data,
An image reproduction method characterized by the above.

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