JP2006148683A - Image / audio recording and playback device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an audio / video storage device capable of increasing the capacity of an expensive flash memory and easily grasping the temporal or positional relationship between a moving image and a still image.
A card recording mode for recording external data on a memory card 135 and a batch transfer mode for batch transfer of data in the memory card from the memory card 135 to a disk 133 are provided. Install and copy to disk. In addition, the memory card data copied to the disk is read, and when it is confirmed that the data has been normally copied to the disk recording medium, the data on the memory card is erased. Further, when a moving image is reproduced on the disc, if there is a still image taken at the same time as the moving image, the still image is displayed on a part of the screen for a predetermined time.
[Selection] Figure 1

Description

  The present invention relates to an audio / video storage device that stores captured images and audio, and more particularly to an audio / video storage device in which a memory card can be attached.

  In recent years, video / audio recording / reproducing apparatuses such as camcorders (camera-equipped recorders) are also available that can improve random access by using a disk medium and perform simple index editing. Furthermore, in addition to moving images, still image functions are enhanced, and there are models that can write still images to a memory card such as a flash memory in addition to a disk. However, since moving image shooting is the main purpose, it is not distorted that the image quality is inferior to that of a digital camera mainly for still image shooting.

  This is inevitable as long as a moving image pickup device (CCD or the like) and an optical system are used. For this reason, it seems that it will continue to carry a camcorder and a digital camera together for shooting. In this case, in addition to an inexpensive recording medium disk, it is necessary to carry an expensive flash memory for a digital camera. Also, the temporal and positional relationships of images taken with camcorders and digital cameras must be remembered and organized later by the photographer, which is cumbersome and uncertain.

Japanese Patent Laid-Open No. 2003-087615 discloses a technique in which a group is formed between a plurality of digital cameras, a representative digital camera is determined, and image data is aggregated wirelessly thereto.
Japanese Patent Laid-Open No. 2003-087615

  When shooting with a camcorder and a digital camera, as described above, an inexpensive disk and an expensive flash memory are used, so a device that increases the free space of the expensive flash memory as much as possible is used. It is necessary to. Further, Patent Document 1 describes a technique for collecting images between representative groups determined in advance as described above in a wireless manner in real time. There was no mention of positional association.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an image / audio storage device that can increase the capacity of an expensive flash memory and can easily grasp the temporal or positional relationship between a moving image and a still image. .

  In order to achieve the above object, the present invention is an image / audio storage device capable of mounting a disk recording medium and a memory card for recording moving image audio or still images, and a card recording mode for recording external data on the memory card; And a batch transfer mode in which data in the memory card is batch transferred from the memory card to the disk recording medium.

  According to the present invention, in addition to the recording / playback function of video / audio data, it is also possible to record data of a device using a memory card such as a digital camera as a recording medium, and to transfer the data from the memory card to a disk recording medium at once. As a result, the free space of the expensive memory card can be increased. In addition, by displaying still images taken at the same time or at the same place on a part of the display screen of the moving image, the temporal relationship or positional relationship between the moving image and the captured still image can be clarified. Help with editing.

  Next, the best mode for carrying out the invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of an audio / video storage apparatus according to the present invention. The image / sound storage apparatus of the present invention mainly includes a camera unit 10, a system control unit 11, a display unit 12, and a storage unit 13.

  The camera unit 10 includes a focus lens 101, an IRIS 102, a CCD 103, a camera signal processing circuit 104, an ADC 105, and a camera control unit 106. The system control unit 11 includes a system controller 111, a work memory 113, an RTC 114, and a GPS 115.

  The display unit 12 includes an LCD driver 121, an LCD unit 124, a DAC 123, and the like, and the storage unit 13 includes a CODEC 131, a disk drive 132, a memory card slot 134, and the like. A disk 133 is mounted on the disk drive 132, and the captured image / audio data is recorded on the disk 133. A memory card (flash memory) 135 can be mounted in the memory card slot 134. Data taken by another digital camera or the like can be recorded on the memory card 135, and the data on the memory card 135 can be recorded on the disk 133.

  The dial switch 112 is a switch for switching modes. By operating the dial switch 112, a still image recording mode, a moving image recording mode, power on / off, a card still image recording mode (from other digital cameras, etc.). It is possible to select a mode in which external data is recorded on the memory card 135 and a copy from the card (a mode in which data on the memory card 135 is copied to the disk 133). Reference numeral 116 denotes a reproduction button, and 117 denotes a recording button. In FIG. 1, the components for recording audio data are omitted.

  FIG. 2 is a flowchart showing the operation when the mode for copying the data in the memory card 135 to the disk 133 is selected. First, image data shot by another digital camera is recorded on a memory card attached to the digital camera. Thereafter, the memory card is removed from the digital camera and inserted into the memory card slot 134, and the dial switch 112 is switched from “power / off” to “copy from card”.

  When the system controller 111 of the system control unit 11 confirms that “copy from card” is selected by the dial switch 112 (S101), it confirms whether the memory card 135 is inserted in the memory card slot 134 (S102). If it is confirmed that it is installed, the file number N of the memory card 135 is set to N = 1 (S103). N is a number assigned to a file on the memory card, and a younger number is assigned to the file in the oldest order. A file with N = 1 indicates the oldest file data on the memory card.

  Next, the system control unit 11 controls each unit, reads the oldest data of the memory card 135, and records the data on the disk 133 by the disk drive 132 (S104). Thereafter, the data copied to the disk 133 is read out, and verification is performed to confirm whether or not the data has been copied normally compared with the original data of the memory card 135 (S106). When it is confirmed that the copy has been normally completed, the system control unit 11 controls each unit to delete the file data of N = 1 in the memory card 135 (S107).

  Thereafter, the file number N = N + 1 of the memory card 135 is set (S108), and it is determined whether all the files on the memory card 135 have been deleted (S109). In this case, since the oldest data has just been erased, the processing from S104 is performed, the memory card having the second oldest N = 2 data, the third oldest N = 3, and so on. The data 135 is copied to the disk 133 in the oldest order, and the data corresponding to the data in the memory card 135 is erased. On the other hand, if a verify error occurs in S106 during this series of processing, the processing ends as a disk error. Thus, by copying the data of the memory card 135 to the disk 133, the free space of the memory card 135 can be increased.

  Next, in the present embodiment, when a moving image is reproduced on the disc 135, if there is a still image (still image copied from a memory card) taken at the same time as the moving image, a part of the reproduction screen is displayed. The still image can be displayed for a predetermined time.

  Specifically, first, when the dial switch 112 is set to “moving image”, the system control unit 11 enters the camera mode, and instructs the camera control unit 106 of the camera unit 10 to perform an imaging process. The camera control unit 106 controls the focus lens 101 and the IRIS 102 to capture an image on the CCD 103. The camera signal processing circuit 104 converts the image signal of the CCD 103 into an electric signal of an appropriate level, and the electric signal is converted into a digital signal by the ADC 105 and sent to the display unit 12 and the storage unit 13. In the display unit 12, the input electric signal is converted into an LCD electric signal by the LCD driver 121, and the photographed video is displayed on the screen of the LCD unit 121.

  When the record button 117 is pressed, the system controller 111 of the system control unit 11 instructs the CODEC 131 to start encoding. Upon receiving this, the CODEC 131 converts the moving image information sent from the ADC 105 of the camera unit 10 into a moving image such as MPEG. The data is compressed by the compression method and transferred to the disk drive 132. Further, the system controller 111 instructs recording on the disk 133. At this time, the system controller 111 acquires date / time information at the time of shooting from the RTC 114 and sends it to the CODEC 131. The CODEC 131 combines these date and time information, transfers them to the disk drive 132, and records them on the disk 133.

  When the dial switch 112 in FIG. 1 is set to “movie”, a movie file to be played back is selected and the play button 116 is pressed, the system controller 111 of the system control unit 11 takes the shooting start date and time information and the shooting of the selected movie file. End date / time information (these information is recorded in the memory at the time of shooting) is read and compared with the shooting date / time information of the still image previously copied from the memory card 135 (this information is also recorded in the memory). Then, a still image reproduction list in which the shooting date and time is included in the shooting time of the moving image (the time from the start of shooting to the end of shooting) is created on the work memory 113 that can be accessed at high speed. It should be noted that the preparation operation for preparing the play list requires about 1 second to several seconds in consideration of the seek operation of the head to the disk 133 and the like.

  FIG. 3A shows a movie at the start of shooting when playing back a shot movie, FIG. 3B shows a state in which a still image is displayed on a part of the movie after a predetermined time, and FIG. A state in which a still image is displayed on a part of a moving image after a predetermined time is shown. FIG. 4 shows the movie shooting time and the still image shooting time in association with each other. FIG. 5 shows an example of the above-described reproduction list.

  Here, when a moving image is reproduced, first, a moving image at the shooting start time is displayed as shown in FIG. During playback, the system control unit 11 generally performs time management by using an interrupt signal of a moving image field rate. It is compared whether or not the shooting time of jpg has arrived. When that time arrives, the system control unit 11 superimposes the still image on a part of the screen as shown in FIG. A specific method of superimposing will be described later in detail.

  Then, the next 0003. Similarly, whether or not the shooting time of jpg has arrived is compared. During that time, as shown in FIG. 3C, the still image is not changed but the moving image is updated. Furthermore, 0003. If the jpg shooting time has come, although not shown, the still image portion is set to 0002. jpg to 0003. Switch to jpg. The above operation is continued until the photographing end time.

  Next, a specific method for superimposing a JPEG still image in an MPEG moving image will be described. FIG. 6 is a detailed block diagram of the CODEC 131, and FIG. 7 is a diagram showing screen addresses during superimpose. FIG. 6 shows an example in which the MPEG system is used for the moving image codec and the JPEG system is used for the still image codec. Also, other character and graphics circuit blocks may be included, but they are omitted.

  As shown in FIG. 7, the read address (MXmin, MYmin) is the upper left image address of the MPEG image displayed on the full screen, and is generally (0, 0). Also, (MXmax, MYmax) is the lower right image address, and is (719, 479) in the case of the NTSC system, but this is not limited because there may be a border or a character display area in the peripheral part. .

  In FIG. 6, a bold line is a signal path at the time of reproduction. MPEG or JPEG data is reproduced from the disk drive 132, decoded by the respective CODECs 601 and 602, and sent as an image to the reproduction multiplexer 603. In the case where only the moving image is displayed without the superimposition of the still image, the system control unit 11 sets the selection signal JVALID to the low level so that the output from the MPEG CODEC 601 is output to the multiplexer 603 to the LCD driver 121 and the DAC 123. Negate.

Next, when the still image capturing time arrives and the system controller 11 performs the superimpose of the still image as described above, the timing for reading out the image address (x, y) of the screen is determined to superimpose the still image. When entering the part to be paused, that is, here is the still image area inside the rectangle at the lower right of the screen of FIG.
JXmin <= x <= JXmax and JYmin <= y <JYmax
At this timing, the selection signal JVALID is asserted to a high level. As a result, the reproduction multiplexer 603 outputs the output of the JPEG CODEC 602 to the LCD driver 121 and the DAC 123 only while the selection signal JVALID is at a high level. Accordingly, only the still image area inside the lower right rectangle in FIG. 7 is switched to the output of the still image JPEG CODEC 602, and the superimpose can be realized.

  By displaying still images taken at the same time as the movie on a part of the movie display screen in this way, the time relationship between the captured moving image and the captured still image becomes clear, so the scene can be confirmed. It can help to edit and improve usability.

  Next, in the present embodiment, as described above, not only the still image shot at the same time as the moving image is displayed on a part of the screen, but also a still image shot at almost the same place to limit the shooting location. Can be displayed on a part of the screen. In the present embodiment, as shown in FIG. 8, the moving picture shooter takes a picture at the point A, and the still picture shooter also sets the 0001. jpg to 0004. Take a still image up to jpg, and then move to point B, which is a considerable distance away from point A. jpg to 0006. Assume that still images have been taken up to jpg.

  First, when the dial switch 112 in FIG. 1 is set to “movie”, a movie file to be played back is selected and the play button 116 is pressed, the system controller 111 of the system control unit 11 takes shooting start date / time information and shooting of the selected movie file. End date / time information (these information is recorded in the memory at the time of shooting) is read and compared with the shooting date / time information of the still image previously copied from the memory card 135 (this information is also recorded in the memory). In this case, the position information is acquired from the GPS 115 during moving image shooting and stored in a memory (not shown).

  Next, the system control unit 11 is a still image whose shooting date and time is included in the shooting time of the moving image (the time from the start of shooting to the end of shooting), and was shot at substantially the same place (point A). A still picture reproduction list is created on the work memory 113 capable of high-speed access. The preparation operation for preparing the reproduction list requires about 1 second to several seconds in consideration of the seek operation of the head to the disk 133 and the like.

  FIG. 9 shows a reproduction list in this case. As shown in FIG. 9, since the reproduction list has a condition of still images taken at the same time and at the same place, 0002. jpg-0004. jpg still images are listed. When a still image of this playlist is displayed as a moving image taken in the same manner as described above, it is displayed on a part of the display screen. Even when taking a still image with a digital camera, it is necessary to acquire position information using GPS and store it in a memory.

  Here, an example of a method for determining that a moving image and a still image are taken at the same place will be described. In this case, it is premised that the position information (longitude / latitude information) is acquired both when a still image is shot with the digital camera as described above and when a moving image is shot with the apparatus of this embodiment.

  First, since longitude is 90 degrees from its definition, the distance in the longitude direction is the longitudinal component of the distance between the points A and B = the longitude difference between the points A and B / 90 degrees × 10000 km. If this value is equal to or greater than a predetermined distance (for example, 100 m), it is determined as another point, and if it is less than that, the distance in the longitude direction is calculated. The longitude needs to be corrected except on the equator where longitude = 0 degrees, and the longitude direction component of the distance between the points A and B = the longitude difference between the points A and B × COS (the longitude of the point A) × 10000 km. If this value is greater than or equal to a predetermined distance (for example, 100 m), it is determined that it is a different point, and if it is less than that, it is determined that it is the same point.

It is a block diagram which shows one Embodiment of the image sound storage apparatus of this invention. It is a flowchart explaining operation | movement of embodiment of FIG. It is a figure explaining the example which displays a still image on a part of display screen of a moving image, when the moving image shooting time by this invention is the same as a still image shooting time. It is a figure explaining in association with the time of movie shooting and still image shooting. It is a figure which shows an example of a still image reproduction list. It is a block diagram which shows CODEC of FIG. 1 in detail. It is a figure explaining the screen address at the time of superimpose. It is a figure explaining the example which displays a still image on a part of display screen of a moving image, when the moving image shooting time by this invention is the same as a still image shooting time, and the imaging | photography place is the same. FIG. 9 is a diagram illustrating an example of a still image reproduction list in the case of FIG. 8.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Camera part 11 System control part 12 Display part 13 Accumulation part 101 Focus lens 102 IRIS
103 CCD
104 Camera processing circuit 105 ADC
106 Camera Control Unit 111 System Controller 112 Dial Switch 113 Work Memory 114 RTC
115 GPS
116 Playback button 117 Record button 121 LCD driver 123 DAC
124 LCD part 131 CODED
132 disk drive 133 disk 134 memory card slot 135 memory card 601 MPEG CODEC
602 JPEG CODEC
603 Playback multiplexer

Claims (4)

An image / sound storage device capable of mounting a disk recording medium and a memory card for recording moving image audio or still images, a card recording mode for recording external data on the memory card, and a memory recording card to the disk recording medium A video / audio storage device having a batch transfer mode for batch transfer of data in a memory card. 2. The image / audio according to claim 1, wherein the data of the memory card copied to the disk recording medium is read, and the data of the memory card is erased when it is confirmed that the data is normally copied to the disk recording medium. Storage device. When a moving image is played back on the disc recording medium, if there is a still image taken at the same time as the moving image, the still image is displayed on a part of the screen for a predetermined time. Item 3. The image and sound storage device according to Item 1 or 2. When a moving image is played back on the disk recording medium, if there is a still image taken at the same time as the moving image at the same place, the still image is displayed for a predetermined time on a part of the screen. The image / sound storage device according to claim 1, wherein