JP2006244659A - Device for discriminating recording medium and method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording medium discriminating device and the like which can speedily check the content of moving images being currently recorded. <P>SOLUTION: When recording the moving images in a recording medium 13 which is a 1st recording medium, recording time information is recorded in a recording medium 16 which is a 2nd recording medium. When discriminating a recording medium, the recording medium is discriminated by extracting the recording time information from a signal reproduced from the recording medium 13 and comparing the time recording information with that held in the recording medium 16. Moreover, when recording the moving images in the recording medium 13, positional information showing a position where the moving images are recorded in the recording medium 13 is recorded in the recording medium 16. When discriminating the recording medium, the recording medium can surely be discriminated by extracting the positional information from the signal reproduced from the recording medium 13 and comparing the signal with the positional information held in the recording medium 16. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recording medium determination device and a recording medium determination method. More specifically, the present invention relates to a recording medium determination device and a recording medium determination method that can quickly check the contents of video information recorded on a recording medium.

  It is not easy to quickly confirm and grasp the contents of video information recorded on a recording medium such as a cassette tape. This is because in order to confirm the contents of the video information recorded on the cassette tape, the tape must be reproduced each time. In particular, as the number of recording media increases, it becomes more difficult to grasp what video information is recorded on which media.

  In order to solve such a problem, the following Patent Document 1 describes an invention relating to a recording medium discrimination device. In Patent Document 1, a cassette tape is reproduced in advance, and recording start time information and recording end time information at the time of image recording included in the reproduction signal are held in a storage unit. An invention is described in which a recording medium is determined by comparing time information with time information held in a recording unit.

JP 2000-11616 A

  However, the conventional techniques described above have the following problems. In the invention described in Patent Document 1, the recording start time information and the recording end time information are acquired from the reproduction signal of the cassette tape. For this reason, in order to acquire the recording start time information and the recording end time information, the cassette tape must be reproduced in advance and stored in the storage unit.

  Patent Document 1 describes that a user replaces a cassette tape and confirms the contents of each cassette (see, for example, the description of [0035]). For this reason, when there are many cassette tapes, there is a problem that the number of times the cassette tapes are replaced increases and it takes time and effort.

  Therefore, when a certain moving image is reproduced, it is desired that the recording start time information and the recording end time information of the moving image have already been acquired and recorded. Further, if the outline of the moving image recorded on each cassette tape is known without frequently replacing the cassette tape, the usability is further improved.

  Accordingly, an object of the present invention is to provide a recording medium determination device and a recording medium determination method capable of quickly grasping the contents of a moving image recorded on a recording medium.

In order to solve the above-described problem, according to a first aspect of the present invention, when moving image data is recorded, the moving image data is recorded on the first recording medium,
Recording the recording time information of the moving image data recorded on the first recording medium on the second recording medium;
When determining the recording medium, the recording time information is extracted from the moving image data recorded on the first recording medium,
A recording medium discriminating apparatus that discriminates a recording medium by comparing the extracted recording time information with the recording time information recorded on a second recording medium.

According to a second aspect of the present invention, when moving image data is recorded, the moving image data is recorded on the first recording medium,
A recording step of recording the recording time information of the moving image data recorded on the first recording medium on the second recording medium;
When determining the recording medium, the recording time information is extracted from the moving image data recorded on the first recording medium,
A recording medium determination method comprising a determination step of determining a recording medium by comparing the extracted recording time information with the recording time information recorded on a second recording medium.

  According to the present invention, it is possible to quickly grasp the contents of a moving image recorded on a recording medium. Further, according to the present invention, the recording medium can be identified without providing the recording medium with an area for recording identification information for identifying the recording medium.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a main configuration of a video camera 1 to which the present invention is applied. The video camera 1 can record and reproduce moving image data and still image data.

  First, the configuration of the video camera 1 will be described. The camera signal processing unit 10 includes, for example, an optical system, an image sensor, an analog signal processing unit, and a timing generation unit. The optical system includes a lens system that forms an image of subject light on an image sensor, an infrared cut filter, and an optical low-pass filter.

  For example, a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor) is used as the image sensor, and an electrical imaging signal corresponding to subject light is generated by photoelectric conversion. The analog signal processing unit includes, for example, a CDS (Correlated Double Sampling) unit that removes various noises included in a signal supplied from the image sensor, an AGC (Automatic Gain Control) unit that adjusts a signal level, and the like. The timing generation unit includes a timing generator (TG) unit that generates a drive pulse to be supplied to the image sensor.

  In the camera signal processing unit 10, the imaging signal that has been subjected to the analog signal processing is converted into a digital imaging signal by an A / D conversion unit (not shown) and supplied to the video signal processing unit 11. The video signal processing unit 11 performs various digital signal processing such as white balance processing, interpolation processing, and contour compensation.

  In the recording / reproducing control unit 12, signal processing corresponding to the recording medium 13 is performed. For example, when the recording medium 13 is a cassette tape capable of recording a DV (Digital Video) format video signal (including an audio signal) or an HDV format video signal (including an audio signal), the recording / playback control unit 12 Then, the video signal and the audio signal are compressed according to the DV format or the HDV format, and the video signal and the audio signal of a predetermined format are formed.

  The recording / playback control unit 12 performs signal processing corresponding to the recording / playback format. For example, in the DV format, the recording / playback control unit 12 performs shuffle processing, error correction processing, multiplexing processing, and the like. The signal subjected to the compression processing or the like is record-encoded and recorded on a recording medium 13 that is a first recording medium.

  The recording medium 13 is not limited to a cassette tape. The recording medium 13 may be a medium such as an optical disk or a semiconductor memory. The recording / playback control unit 12 performs processing corresponding to the recording medium 13. For example, when the recording medium 13 is a DVD (Digital Versatile Disc), the recording / playback control unit 12 performs encoding / decoding processing of an MPEG (Moving Picture Coding Experts Group) system.

  In the video signal processing unit 11, a predetermined frame is extracted by the system control unit 14 from the frames constituting the video signal that has been subjected to the digital signal processing. The extracted frame is supplied to the recording / playback control unit 15.

  In the recording / playback control unit 15, reduction processing and compression processing are performed on the supplied image signal of a predetermined frame as necessary. As an example, an image signal of 640 × 480 (number of horizontal pixels × number of vertical pixels) is reduced to a still image of 160 × 120. Further, as an example of the compression process, for example, an image compression process based on a JPEG (Joint Photographic Coding Expert Group) format is performed, and an image file in the JPEG format is formed. At the time of reproduction of the compressed signal, the recording / reproduction control unit 15 performs image file expansion processing.

  Further, the recording / playback control unit 15 converts the image file into a format suitable for recording on the recording medium 16 as the second recording medium. The converted image file is recorded on the recording medium 16. The recording medium 16 is, for example, a flash memory that is detachable from the video camera 1, but may be a non-volatile medium such as an HDD (Hard Disk Drive).

  The system control unit 14 is realized by, for example, a microprocessor, and controls each unit of the video camera 1. Further, the electric signal corresponding to the operation input generated by the operation information processing unit 17 is supplied to the system control unit 14, and processing corresponding to the operation is executed.

  The system control unit 14 further controls the LCD panel 19 which is a display unit by controlling the display processing unit 18. In the display processing unit 18, image signal processing such as YC / RGB conversion and A / D conversion is performed, and a reproduced moving image and a reproduced still image subjected to the image signal processing are displayed on the LCD panel 19.

  The LCD panel 19 displays a playback image and a menu screen for performing various settings. The LCD panel 19 may be configured as a touch panel. When the LCD panel 19 is configured as a touch panel, a predetermined function is executed by pressing a specific part of the panel.

  Next, the operation of the video camera 1 during recording will be described. During recording, a moving image is recorded on the recording medium 13. The recording medium 16 records, for example, a still image of a predetermined frame among a plurality of frames constituting a moving image to be recorded, recording time information and position information of the frame.

  The operation during recording will be described in more detail. In the following description, as an example, it is assumed that moving image recording / reproduction is performed based on the DV format, and the recording medium 13 is a cassette tape capable of recording / reproducing in the DV format.

  The subject information captured by the image sensor included in the camera signal processing unit 10 is subjected to signal processing as described above in the camera signal processing unit 10, the video signal processing unit 11, and the recording / playback control unit 12. To be recorded.

  For example, one frame of a moving image is recorded on 10 tracks on the recording medium 13. Each track is provided with a subcode sector, and an ID portion and subcode data are recorded in the subcode sector. The information recorded in the ID portion includes an absolute track number (hereinafter, abbreviated as a track number as appropriate) which is an example of position information. The track number is a number added to each track from the beginning of the tape.

  The subcode data is information including the recording date and time. That is, information including the recording date and recording time / minute / second is recorded in the subcode sector.

  FIG. 2 shows an example of a moving image recorded on the recording medium 13. In FIG. 2, a moving image to be recorded is shown in units of frames. The moving image is recorded on the recording medium 13 in order of the frame F1, the frame F2, the frame F3,. Note that the number of frames constituting a moving image to be recorded varies.

  The recording medium 13 records recording time information for recording each frame and a track number indicating the position of the track on which the frame is recorded. For example, if the recording date / time of the frame F1 is “October 26, 2004, 20:15”, the recording date / time is recorded in a predetermined area of the recording medium 13 as recording time information.

  A track number is added to the 10 tracks on which the frame F1 is recorded. For example, since the frame F1 is the first frame in the moving image, track numbers “00000001” to “00000010” are added and recorded in a predetermined area of the recording medium 13. Similarly, the recording time information and the track number are recorded on the recording medium 13 for the other frames.

  In FIG. 2, for example, the recording time information of the frame F1 is expressed as '2004.10.26.20:15'. Further, the track number on the recording medium 13 on which the frame F1 is recorded is set to 'Tr. No. = 00000001 to 00000010 '.

  When moving images are recorded as described above, frames are extracted in synchronization with a predetermined timing. An example in which a frame is extracted in synchronization with a user operation input performed at the time of recording will be described.

  For example, when an operation input for pressing a REC button is performed to record a moving image, operation information is supplied to the system control unit 14 via the operation information processing unit 17. The system control unit 14 supplied with the operation information extracts the top or substantially top frame of the moving image recorded from the video signal processing unit 11. In the case of the moving image described with reference to FIG. 2, for example, the frame F1 is extracted.

  At this time, the system control unit 14 also extracts the recording time information of the frame to be extracted. For example, when the frame F1 is extracted, “2004.10.26.20:15” which is the recording time information of the frame F1 is also extracted.

  The system control unit 14 supplies the extracted frame to the recording / playback control unit 15. In the recording / playback control unit 15, reduction processing and compression processing are performed as necessary on the image signal of the supplied frame. The image signal subjected to the signal processing is recorded on the recording medium 16 as a still image. At this time, the still image of the frame and the recording time information of the frame are associated with each other and recorded on the recording medium 16.

  When the recording of the moving image is finished and an operation for releasing the REC button is performed, the operation information is supplied to the system control unit 14 via the operation information processing unit 17. The system control unit 14 supplied with the operation information extracts the last or substantially last frame of the moving image to be recorded from the video signal processing unit 11.

  The system control unit 14 supplies the last or substantially last frame of the moving image to be extracted to the recording / playback control unit 15. In the recording / playback control unit 15, reduction processing and compression processing are performed as necessary on the image signal of the supplied frame. The image signal subjected to the signal processing is recorded on the recording medium 16 as a still image. At this time, the still image of the frame and the recording time information of the frame are associated and recorded on the recording medium 16.

  Further, the system control unit 14 may extract the position information of the frame to be extracted and record it on the recording medium 16. That is, the system control unit 14 may acquire the track number on the recording medium 13 on which the extracted frame is recorded, and record it on the recording medium 16 via the recording / playback control unit 15.

  Further, the timing at which the system control unit 14 extracts a frame is not limited to the example by the operation of the REC button described above. For example, a predetermined frame may be extracted based on a trigger by an operation input other than the REC button. A plurality of frames may be extracted at a fixed period.

  Alternatively, the moving image to be recorded can be temporarily stored in a buffer memory (not shown), and after the recording is completed, a predetermined frame can be extracted and recorded on the recording medium 16.

  Alternatively, only frame recording time information may be extracted and recorded on the recording medium 16.

  Here, the recording process of the still image of the frame and the recording time information and position information of the frame on the recording medium 16 will be described in more detail with reference to FIG. When a cassette tape is attached to the video camera 1 and recording is started, a unique ID is assigned to the cassette tape. This ID is held until the cassette tape is detached from the video camera 1. The system control unit 14 forms a folder on the recording medium 16 based on this ID, and stores a still image, recording time information, and position information of the extracted frame.

  For example, when a cassette tape is attached to the video camera 1 to record the moving image described with reference to FIG. 2, 001 is assigned as a unique ID to the cassette tape. This ID may be made recognizable by the user, for example, displayed on the LCD 19. Further, a label on which the ID is described may be printed by a printer connected to the video camera 1.

  The system control unit 14 forms a folder “TAPE001” on the recording medium 16 based on the assigned ID, for example. When a moving image is actually recorded, the still image, recording time information, and position information of the frame extracted by the system control unit 14 are stored in the folder “TAPE001”.

  For example, as shown in FIG. 3, a still image of a frame at the start of recording and a frame at the end of recording is recorded in a folder 'TAPE001' together with recording time information and position information. Of course, not only the still image of the frame at the start and end of recording, but also the still images of a plurality of frames extracted periodically by a fixed period trigger may be recorded. Further, when the extracted information is only the recording time information, only the recording time information is recorded.

  Further, when another cassette tape is mounted on the recording medium 13 and a moving image is recorded, for example, an ID “002” is assigned to the cassette tape, and a folder “TAPE002” is formed on the recording medium 16.

  Next, the recording medium discrimination operation will be described. The determination operation is performed by comparing the recording time information extracted from the recording medium 13 with the recording time information extracted from the recording medium 16.

  When an operation input for executing the discrimination process is performed, a control signal for executing the discrimination process is supplied from the operation information processing unit 17 to the system control unit 14. The system control unit 14 supplied with the control signal controls the recording / reproducing control unit 12 to reproduce the recording medium 13 and performs control to extract recording time information from a predetermined portion such as a head position of the reproduced signal. For example, in the DV format, recording time information can be extracted from information of video AUX (Auxilialy).

  Further, the system control unit 14 controls to reproduce the recording medium 16 and extracts recording time information from the recording medium 16. As described above, the recording medium 16 holds recording time information recorded for each recording medium. The system control unit 14 compares the recording time information extracted from the recording medium 13 with a plurality of recording time information for each recording medium acquired from the recording medium 16.

  For example, as shown in FIG. 4, it is assumed that recording time information “2004.10.26.20:18” is extracted from the recording medium 13. On the other hand, it is assumed that the folder TAPE001 to the folder TAPE003 are extracted from the recording medium 16. Each folder holds a still image and recording time information and position information of the still image. The comparison performed by the system control unit 14 is performed by determining whether or not the recording time information extracted from the recording medium 13 is included in the range of the recording time information held in the recording medium 16.

  In the example of FIG. 4, the recording time information '2004.10.26.20:18' extracted from the recording medium 13 is recorded from the recording time information '2004.10.26.20:00' to '2004.10.26.21:00' held in TAPE003. Within range. Therefore, in this case, it is possible to determine that the recording medium 13 to be reproduced is associated with the information held in TAPE003. The recording time information is continuously extracted from the recording medium 13, for example, for several minutes, and the range of the extracted recording time information is compared with the recording time information held in each folder of the recording medium 16. Also good.

  Further, not only the recording time information but also the position information may be compared. That is, the position information is extracted from the recording medium 13 and it is determined whether or not it is within the range of the position information held in each folder of the recording medium 16. For example, in the example shown in FIG. 4, the position information “Tr. No = 00081 ’to‘ Tr. No = 00090 ”indicates that the position information‘ Tr. No = 00001 ’to‘ Tr. It can be determined that it is within the range of No = 00130 '.

  For example, when the recording medium 13 is two recording media having the same recording time information, any recording medium may be identified as a recording medium associated with TAP 003 in the recording medium 16. Therefore, as described above, it is possible to reliably determine the recording medium by comparing not only the recording time information but also the positional information.

  Thus, the following effects are acquired by discriminating the recording medium 13. For example, it is assumed that recording is performed on the recording medium 13 and the recording medium 13 is detached from the video camera 1 after the recording is completed. Then, it is assumed that the recording medium 13 is again attached to the video camera 1 and the second recording is performed in an empty area of the recording medium 13. Also during the second recording, the recording time information, position information, and still image of the recording medium 13 are recorded on the recording medium 16 by the system control unit 14. At this time, the folder in the recording medium 16 corresponding to the recording medium 13 is identified, so that the recording time information related to the same recording medium 13 can be recorded in the same folder in the recording medium 16.

  When the recording time information and position information of the recording medium 13 are not within the range of any information held in the recording medium 16, the recording medium 13 is determined as the recording medium used for the first time for the video camera 1. Can do. Therefore, when recording a moving image, a new folder is created in the recording medium 16, and recording time information and the like are recorded in the created new folder. For example, consecutive numbers are added to the new folder.

  Next, a function for identifying the recording medium 13 using information stored in the recording medium 16 will be described. As described above, when the recording medium 13 is a cassette tape or the like, it is necessary to play the cassette tape once mounted on the video camera 1 in order to know the contents of the cassette tape. Therefore, in the present invention, only the information held in the recording medium 16 is used so that the outline of the moving image recorded on the recording medium 13 can be grasped.

  This will be described in more detail. For example, when a predetermined button provided in the video camera 1 is pressed, operation information is supplied from the operation information processing unit 17 to the system control unit 14. The system control unit 14 supplied with the operation information reads information recorded on the recording medium 16. The system control unit 14 displays the read information on the LCD 19 via the display processing unit 18.

  FIG. 5 shows an example of a GUI displayed on the LCD 19. For example, it is assumed that six folders TAPE001 to TAPE006 are recorded on the recording medium 16. At this time, icons indicating TAPE001 to TAPE006 as indicated by reference numerals 45 to 50 are displayed on the LCD 19, and a screen on which each icon can be selected is displayed.

  An icon to be displayed is selected using an operation means such as a cross key provided in the video camera 1, for example. At this time, when the LCD 19 is configured as a touch panel, a direct operation can be performed by simply touching the LCD 19.

  If the icons of all the folders cannot be displayed due to restrictions on the display area of the LCD 19, for example, the screen is scrolled by operating the direction instruction button 41 and the direction instruction button 42 displayed on the LCD 19 to display other icons. You can also.

  In the GUI shown in FIG. 5, for example, when the TAPE001 icon is selected and the OK button 51 is pressed, the screen of the LCD 19 changes to a screen on which information in the TAPE001 is displayed. FIG. 6 is an example of a screen showing the contents of TAPE001.

  For example, the still image 61 to the still image 66 recorded on the TAPE001 are displayed on the LCD 19. Of course, the number of still images to be displayed is not limited to six. By operating the direction instruction button 67 or the direction instruction button 68, another still image can be displayed.

  The still images 61 to 66 are still images extracted from a moving image when the moving image is recorded on a cassette tape assigned with an ID of TAPE001. As described above, when recording a moving image, for example, by recording a plurality of still images on the recording medium 16 at a fixed period, the recorded still images can be used as index images.

  The user can know the outline of the moving image recorded on the tape by confirming the plurality of displayed still images. For example, when a still image of TAPE001 is viewed and the still image is a moving image to be reproduced, a tape corresponding to TAPE001 may be reproduced. At this time, if the label “001” is attached to the tape, the correspondence can be made clearer.

  After confirming the still image, the user can return to the GUI screen or menu screen described with reference to FIG. 5 by operating the OK button 69 or the menu button 70, for example.

  As described above, the tape to be reproduced can be identified only by reproducing the information recorded on the recording medium 16 without reproducing the recording medium 13.

  FIG. 7 is a flowchart showing a flow of processing performed when recording a moving image. When recording of a moving image is started, in step S11, it is determined whether or not there is a user trigger. If there is a trigger from the user, the process proceeds to step S13. If there is no trigger from the user, the process proceeds to step S12.

  In step S12, it is determined whether or not there is a fixed period trigger. If there is a fixed-cycle trigger, the process proceeds to step S13. If there is no fixed period trigger, the process proceeds to step S14.

  In step S13, since there is a trigger from the user or a fixed cycle, a still image of a predetermined frame of the moving image is recorded on the recording medium 16 based on the trigger. Further, as described above, recording time information and position information of a still image recorded on the recording medium 16 may be recorded on the recording medium 16.

  In step S14, it is determined whether or not moving image recording has been completed. If the recording is finished, the process is finished. If the recording has not ended, the process returns to step S11, and the presence or absence of a trigger is determined again.

  Note that when an operation to start recording a moving image is used as a trigger, a still image, recording time information, and position information are recorded on the recording medium 16 by the recording start operation.

  FIG. 8 is a flowchart showing a process during reproduction of a moving image. In the video camera 1 in this embodiment, a still image or the like can be recorded on the recording medium 16 not only at the time of recording a moving image but also at the time of reproduction.

  In step S21, it is determined whether or not there is a user trigger. If there is a trigger from the user, the process proceeds to step S23. If there is no trigger from the user, the process proceeds to step S22.

  In step S22, it is determined whether or not there is a fixed period trigger. If there is a fixed-cycle trigger, the process proceeds to step S23. If there is no fixed period trigger, the process proceeds to step S24.

  In step S23, since there is a trigger from the user or at a fixed period, a still image of a predetermined frame of the moving image is recorded on the recording medium 16 based on the trigger. Further, as described above, the recording time information and / or position information of the still image recorded on the recording medium 16 may be recorded on the recording medium 16.

  In step S24, it is determined whether or not the reproduction of the moving image has ended. When the reproduction is finished, the process is finished. If the reproduction has not ended, the process returns to step S21, and it is determined again whether or not there is a trigger.

  FIG. 9 is a flowchart showing the flow of processing during discrimination. That is, the flow of determination processing performed by comparing the information extracted from the recording medium 13 and the information held in the recording medium 16 described with reference to FIG.

  In step S31, it is determined whether or not the recording time information is within the range. Recording time information is extracted from the recording medium 13. In addition, a folder for each ID assigned to each tape is formed on the recording medium 16, and each folder holds recording time information and position information. In step S31, it is determined whether or not the recording time information extracted from the recording medium 13 is within the range of the recording time information in the folder called TAPE001 of the recording medium 16, for example.

  In step S31, if the recording time information extracted from the recording medium 13 is not within the range of the recording time information held in TAPE001, the process proceeds to step S34. In step S34, the information to be compared with the recording time information extracted from the recording medium 13 is switched to the next information. For example, the recording time information extracted from the recording medium 13 is compared with the recording time information held in TAPE002.

  In step S31, when the time information extracted from the recording medium 13 is within the range of the recording time information held in TAPE001, the process proceeds to step S32. In step S32, it is determined whether or not the position information extracted from the recording medium 13 is within the range of position information held in the TAPE001. As described above, it is possible to reliably determine the recording medium by comparing the position information together with the recording time information.

  If the position information extracted from the recording medium 13 is not within the range of the position information held in TAPE001, the process proceeds to step S34. Information to be compared with the position information extracted from the recording medium 13 is switched to the next information. For example, the position information extracted from the recording medium 13 is compared with the position information held in TAPE002.

  If the position information extracted from the recording medium 13 is within the range of position information held in TAPE001, the process proceeds to step S33. In step S33, the corresponding recording medium is determined. That is, in step S33, a folder corresponding to the recording medium 13 is determined from among a plurality of folders that are recorded on the recording medium 16 and assigned a unique ID. For example, if it is determined that the folder corresponding to a certain recording medium 13 is TAPE001, when a moving image is recorded again on the same recording medium 13, information such as a still image is recorded on TAPE001 of the recording medium 16. The

  The present invention can be variously modified and applied without departing from the gist of the present invention, and is not limited to the above-described embodiment. In the above-described embodiment, the video camera 1 which is an example of the imaging apparatus has been described. However, the present invention can also be applied to a recording / reproducing apparatus that does not have an imaging function.

  Still images recorded on the recording medium 16 can also be used for cueing the reproduction of the recording medium 13. For example, it is assumed that the recording medium 13 and the recording medium 16 are attached to the video camera 1. Assume that, for example, a still image 61 is selected in the GUI described with reference to FIG. The system control unit 14 may extract the position information of the still image 61 held in the recording medium 16 and reproduce the recording medium 13 using the extracted position information of the still image 61 as a reproduction start position. In this way, the user can view the desired scene of the recorded moving image as well as know the contents of the recorded moving image.

It is a block diagram which shows the structure of the video camera in one Embodiment of this invention. It is a basic diagram which shows an example of a structure of the moving image recorded on the recording medium 13 in one Embodiment of this invention. It is a basic diagram which shows an example of the information recorded on the recording medium 16 in one Embodiment of this invention. It is a basic diagram which shows an example of the discrimination | determination process in one Embodiment of this invention. An example of GUI displayed on LCD in one Embodiment of this invention is shown. An example of other GUI displayed on LCD in one Embodiment of this invention is shown. It is a flowchart which shows the process at the time of the recording of the moving image in one Embodiment of this invention. It is a flowchart which shows the process at the time of reproduction | regeneration of a moving image in one Embodiment of this invention. It is a flowchart which shows the process at the time of recording medium discrimination | determination in one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Video camera 12 Recording / reproducing control part 13 Recording medium 14 System control part 15 Recording / reproducing control part 16 Recording medium 19 LCD

Claims (10)

When recording moving image data, the moving image data is recorded on the first recording medium,
Recording the recording time information of the moving image data recorded on the first recording medium on the second recording medium;
When determining the recording medium, the recording time information is extracted from the moving image data recorded on the first recording medium,
A recording medium discriminating apparatus for discriminating a recording medium by comparing the extracted recording time information with the recording time information recorded on the second recording medium. When recording the moving image data, the position information of the moving image data recorded on the first recording medium is further recorded on the second recording medium,
When determining the recording medium, position information is extracted from the moving image data recorded on the first recording medium,
The recording medium determination apparatus according to claim 1, wherein the recording medium is determined by comparing the extracted position information with the position information recorded on the second recording medium.   2. The recording medium discriminating apparatus according to claim 1, wherein, at the time of recording moving image data, further, a still image of a selected frame among a plurality of frames constituting the moving image data is recorded on the second recording medium. .   3. The recording medium discriminating apparatus according to claim 2, wherein when recording moving image data, a still image of a selected frame among a plurality of frames constituting the moving image data is further recorded on the second recording medium. .   The recording medium determination device according to claim 3, wherein the still image is displayed on a display unit for identification of the first recording medium.   The recording medium determination apparatus according to claim 4, wherein the still image is displayed on a display unit for identification of the first recording medium. When recording moving image data, the moving image data is recorded on the first recording medium,
A recording step of recording recording time information of moving image data recorded on the first recording medium on a second recording medium;
When determining the recording medium, the recording time information is extracted from the moving image data recorded on the first recording medium,
A recording medium determination method comprising a determination step of determining a recording medium by comparing the extracted recording time information with the recording time information recorded on the second recording medium. The recording step is a step of further recording position information of moving image data recorded on the first recording medium on the second recording medium,
In the determination step, position information is extracted from moving image data recorded on the first recording medium,
The recording medium determination method according to claim 7, wherein the recording medium determination method is a step of determining the recording medium by comparing the extracted position information with the position information recorded on the second recording medium.   8. The recording medium discrimination according to claim 7, wherein the recording step further includes a step of recording a still image of a selected frame among the plurality of frames constituting the moving image data on the second recording medium. Method.   9. The recording medium determination according to claim 8, wherein the recording step further includes a step of recording a still image of a selected frame among the plurality of frames constituting the moving image data on the second recording medium. Method.

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