JP2012016058A - Image recorder, image recording control program, and image recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To record a moving picture so that a plurality of files can be managed according to time.SOLUTION: A loop of steps SA2→SA3→SA4→SA2 is repeated when a recording end trigger is generated or until a fixed time elapses, and frame image data is sequentially stored in a buffer memory. When the fixed time (ten minutes) elapses from a video recording start, it is determined whether an area that can record a new file obtained by making frame image data for the fixed time one file, remains in a storage memory (step S1). If capacitance remains (step S1: Yes), new file processing is executed, which attaches a file name to the file composed of the frame image data for the fixed time created in a step SA5 and records the file in a spare area of the storage memory (step S2). If the new file cannot be recorded in the storage memory, overwriting file processing is executed (step S3).

Description

  The present invention relates to an image recording apparatus for recording a moving image, an image recording control program and an image storage method used in the image recording apparatus, and an image reproducing apparatus.

  2. Description of the Related Art Conventionally, an image recording apparatus that is used in a monitoring system or the like and that records an endless moving image has been proposed. In this image recording apparatus, for example, when a user designates a recording area for 50 files, the recording medium is equally divided into 50 files, and moving image data is recorded and stored in each area. When the number of files to be saved reaches 50, the oldest file is selected, and moving image data is overwritten and recorded on the selected oldest file. Thereby, endless recording of moving image data is enabled (for example, refer to Patent Document 1).

JP 2004-120178 A

  However, when the recording medium is equally divided into the designated number of files in this way, the capacity of each divided file is naturally the same. Therefore, when moving image data is recorded in each file, if the bit rate such as the compression rate or resolution of each frame image is changed during recording, the number of frames that can be recorded in the file differs depending on the bit rate. As a result, the recording time, which is the actual time corresponding to the moving image recorded in each file, also varies from file to file.

  On the other hand, in an image recording apparatus used for this kind of monitoring system or the like, when an unexpected event occurs, a search is made as to which file the images before and after the predetermined time are recorded in the file, and the Elucidate the cause by playing the file. At this time, if the recording time differs in each file, a plurality of files cannot be managed or searched based on the time. As a result, it becomes difficult to quickly search for the target file when the cause is elucidated and to elucidate the cause at an early stage.

  The present invention has been made in view of such conventional problems, and an image recording apparatus, an image recording control program and an image storage method for recording a moving image so that a plurality of files can be managed by time, and the moving image It is an object of the present invention to provide an image reproducing apparatus for reproducing images.

  In order to solve the above-described problem, in the image recording apparatus according to the first aspect of the present invention, an imaging unit that sequentially captures images, a storage unit, and images that are sequentially captured by the imaging unit are acquired in a certain time unit. Obtaining means, file generating means for generating a file for each image group obtained by the obtaining means, and storage control means for storing the file generated by the file generating means in the storage means, It is characterized by providing.

  In the image recording apparatus according to the second aspect of the present invention, the storage control means leaves a free space necessary for storing the file generated by the file generation means remaining in the storage means. A first storage control unit that sequentially stores the files generated by the file generation unit in the storage unit when it is determined by the determination unit that the free space exists; And a second file that stores a new file generated by the file generating means instead of the oldest file stored in the storage means when the determining means determines that the free space does not exist. Storage control means.

  In the image recording apparatus according to the third aspect of the present invention, the storage control means leaves a free space necessary for storing the file generated by the file generation means remaining in the storage means. A first storage control unit that sequentially stores the files generated by the file generation unit in the storage unit when it is determined by the determination unit that the free space exists; When the determination unit determines that the free space does not exist, the frame images in each file stored in the storage unit are thinned out, and the frame images remaining by the thinning are combined. Combined file generating means for generating a combined file, and erasing the file from the storage means to form free space in the storage means Characterized in that it comprises a second storage control means for storing the combined file.

  In the image recording apparatus according to the fourth aspect of the present invention, the combined file generation means thins out the frame image at a predetermined ratio from the whole of each file stored in the storage means. Features.

  In the image recording apparatus according to the fifth aspect of the invention, the combined file generating means leaves frame images from the start of storage to a predetermined time in each file stored in the storage means. Another frame image is thinned out.

  In the image recording apparatus according to the sixth aspect of the present invention, the information stored in the storage unit is collectively erased before the storage control unit starts storing the file in the storage unit. An erasing unit is provided.

  In the image recording apparatus according to the seventh aspect of the present invention, the file designated in advance stored in the storage means before the storage control means starts storing the file in the storage means. And an erasing unit for erasing other files except for.

  Further, in the image recording apparatus according to the invention of claim 8, the first and second storage control means attach an identifier to the file based on a predetermined condition and store the identifier in the storage means, The second storage control means stores the new file in place of the oldest file other than the file to which the identifier is attached.

  The image recording apparatus according to the ninth aspect of the present invention is characterized by comprising an imaging cycle control means for variably controlling the imaging cycle of the imaging means.

  In the image recording apparatus according to the invention of claim 10, a protection process for prohibiting erasure is performed on the oldest file in the storage means at a predetermined time interval, and files other than the file subjected to the protection process are applied. It is characterized by comprising free capacity forming means for erasing other files to form free capacity.

  In the image recording apparatus according to an eleventh aspect of the present invention, the free capacity forming means performs the protection process on a part of the oldest file.

  The image recording apparatus according to the invention of claim 12 further comprises a dynamic detection means for detecting dynamics based on an image captured by the imaging means, and the acquisition means has dynamics detected by the dynamic detection means. When detected, the image picked up by the image pickup means is acquired.

  Further, the image recording apparatus according to the invention of claim 13 is provided with a circulating storage means for sequentially circulating and storing images taken by the imaging means, and the acquisition means detects the dynamics by the dynamic detection means. In this case, the immediately preceding image is acquired from the circulating storage unit, and the image after the dynamics is detected is acquired from the imaging unit.

  In the image recording apparatus according to the fourteenth aspect of the present invention, the image recording apparatus includes a dynamic detection means for detecting dynamics based on an image captured by the imaging means, and the file generation means is dynamic by the dynamic detection means. Is detected, the generation of the file is terminated without depending on the time unit, and the next file is generated.

  In the image recording apparatus according to the fifteenth aspect of the present invention, when the dynamic state is detected by the dynamic state detecting unit, the image pickup unit increases the bit rate or the image size as compared with the normal time and displays the image. It is characterized by imaging.

  In the image recording apparatus according to the sixteenth aspect of the present invention, the dynamic detection means for detecting dynamics based on the image captured by the imaging means, and the dynamic detection in the images sequentially captured by the imaging means. And adding means for detecting the dynamics by the means and adding an identifier to the image.

  Further, in the image recording apparatus according to the invention of claim 17, the dynamic detection means includes a dynamic storage means for storing the first detected dynamic, a dynamic stored in the dynamic storage means, and thereafter Comparing means for comparing the detected dynamics, and a determining means for determining whether the dynamics are detected when the two dynamics are different based on the comparison result of the comparing means.

  Further, in the image recording apparatus according to the invention of claim 18, the dynamic detection means includes a dynamic storage means for sequentially storing the detected dynamics, and a plurality of dynamics sequentially stored in the dynamic storage means, Comparing means for comparing kinetics detected after that, and determination means for determining what detected the kinetics when the plurality of kinetics are different from the detected kinetics based on the comparison result of the comparing means. It is characterized by.

  According to a nineteenth aspect of the present invention, there is provided an image recording apparatus according to the present invention, further comprising an impact detection means for detecting an impact, wherein the acquisition means is responsive to the impact detection means when it detects the impact. Acquisition of an image from the imaging unit is stopped, and the file generation unit generates a file from images up to the time point acquired by the acquisition unit.

  In the image recording apparatus according to the twentieth aspect, the impact detection means is an impact sensor in an airbag system mounted on a vehicle.

  The image recording apparatus according to the invention of claim 21 further comprises impact detection means for detecting an impact, and the acquisition means responds to the case where the impact detection means detects an impact. The generation of the file is terminated without depending on the time unit, and the image is acquired in a time unit shorter than the certain time unit after the impact detection means detects the impact.

  In the image recording apparatus according to the twenty-second aspect of the present invention, a combined file generating unit that generates a single file by combining a plurality of files stored in the storage unit, and the combined file And a third storage control unit for storing the single file generated by the generation unit in the storage unit or another storage unit.

  In the image recording apparatus according to the invention of claim 23, the combined file generating means includes an extracting means for extracting an image for a predetermined time from each of the plurality of files stored in the storage means. And a single file is generated by combining the images for a predetermined time extracted from the files by the extracting means.

  Further, in the image recording apparatus according to the invention of claim 24, after the single file is generated by the combined file generation means, a plurality of files stored in the storage means are deleted. Selection means for selecting whether or not, and erasure means for erasing a plurality of files stored in the storage means according to a selection result of the selection means.

  Further, in the image recording apparatus according to the invention of claim 25, the combined file generating means combines the plurality of files by reducing the bit rate of other files excluding a file designated in advance. It is characterized by that.

  An image recording apparatus according to a twenty-sixth aspect of the invention is characterized in that the image recording apparatus further comprises a reproducing unit that reads and reproduces a plurality of files stored in the storage unit in the oldest order.

  In the image recording device according to the invention of claim 27, the reproduction means stores each file at a reproduction frame rate corresponding to a frame rate at the time of storage of each file stored in the storage means. It is characterized by playing.

  Further, in the image recording apparatus according to the invention of claim 28, the reproduction means stores the files at a constant frame rate irrespective of the frame rate at the time of recording of the files stored in the storage means. It is characterized by playing.

  In the image recording control program according to the invention as claimed in claim 29, a computer having an image recording apparatus comprising image pickup means for sequentially picking up images and storage means is used, and images sequentially picked up by the image pickup means are fixed. Acquisition means for acquiring in units of time, file generation means for generating a file for each image group of the time units acquired by the acquisition means, and storing the files generated by the file generation means in the storage means It is characterized by functioning as storage control means.

  The image recording method according to the invention of claim 30 is an image recording method in an image recording apparatus comprising image pickup means for sequentially picking up images and storage means, and images picked up sequentially by the image pickup means. An acquisition step of acquiring a file in a fixed time unit, a file generation step of generating a file for each image group of the time unit acquired in the acquisition step, and the file generated in the file generation step in the storage unit And a storage control step for storing the data.

  Further, in the image reproducing device according to the invention of claim 31, reading means for reading out the files in order from the oldest from the storage means storing the files for each image group of a fixed time unit sequentially captured; And a reproducing means for reproducing the file read by the reading means.

  According to the image recording apparatus, the image recording control program, and the image recording method according to the present invention, image data corresponding to the same time can be recorded in each file, so that each file can be managed by time. Therefore, it becomes easy to search for a file when elucidating the cause of a certain event, and as a result, it becomes possible to quickly search for a file and elucidate the cause at an early stage when elucidating the cause.

  Further, according to the image reproducing apparatus of the present invention, the file can be read and reproduced in the oldest order regardless of the order in which the files are stored in the storage means, and when the cause of a certain event is elucidated. Efficient reproduction can be performed.

1 is a block diagram of a digital camera according to an embodiment of the present invention. (A) is a flowchart which shows the process sequence at the time of the recording in the 1st Embodiment of this invention, (B) is a flowchart which shows the procedure of a registration process. It is a division file recording transition diagram to the storage memory. It is a division file recording transition diagram to the storage memory. It is explanatory drawing which shows the division file recording procedure to a preservation | save memory. It is a flowchart which shows the process sequence after the completion | finish of recording in the 1st Embodiment of this invention. It is a flowchart which shows the process sequence at the time of the recording in the 1st Embodiment of this invention. It is a flowchart which shows the process sequence after the completion | finish of recording in the embodiment. It is a flowchart which shows the process sequence in the 3rd Embodiment of this invention. It is a flowchart which shows the process sequence in the 4th Embodiment of this invention. It is a conceptual diagram which shows the structure of the buffer used in the 5th Embodiment of this invention. It is a flowchart which shows the process sequence in the embodiment. It is a flowchart which shows the process sequence in the 6th Embodiment of this invention. It is a flowchart which shows the process sequence in the 7th Embodiment of this invention. It is a flowchart which shows the process sequence in the 8th Embodiment of this invention. It is a flowchart which shows the process sequence in the 9th Embodiment of this invention. It is a flowchart which shows the process sequence in the 10th Embodiment of this invention. It is explanatory drawing which shows the recording operation in the same embodiment. It is a flowchart which shows the process sequence in the 11th Embodiment of this invention. It is explanatory drawing which shows the recording operation in the same embodiment. It is a flowchart which shows the process sequence in the 12th Embodiment of this invention. It is a flowchart which shows the process sequence in the 13th Embodiment of this invention. It is a flowchart which shows the detail of the combined moving image file creation process in the embodiment. It is explanatory drawing which shows operation | movement of a combined moving image file creation process. It is a figure which shows an example of the recording form of each division | segmentation file. (A) is a flowchart showing a processing procedure in the fourteenth embodiment of the present invention, and (B) is a flowchart showing an interrupt routine for erasure processing. It is a schematic diagram which shows the recording form of the division | segmentation file in the 15th Embodiment of this invention. It is a flowchart which shows the process sequence in the embodiment. It is explanatory drawing which shows the reproduction | regeneration by the embodiment. It is a flowchart which shows the process sequence in the 16th Embodiment of this invention. It is explanatory drawing which shows the difference in the reproduction | regeneration by the embodiment. It is a flowchart which shows the process sequence in the 17th Embodiment of this invention. It is explanatory drawing which shows the difference in the reproduction | regeneration by the embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the present specification, the moving image is a concept including continuous shooting.
(First embodiment)
FIG. 1 is a block diagram showing a circuit configuration of a digital camera 1 common to each embodiment of the present invention, and includes a still image shooting function and a moving image shooting function. The digital camera 1 includes a CCD 2 and a DSP / CPU 3, and the CCD 2 is provided with a Bayer array primary color filter in a photosensitive portion. The DSP / CPU 3 is a one-chip microcomputer that has various digital signal processing functions including image data compression / decompression processing and controls each part of the digital camera 1.

  The DSP / CPU 3 is connected to a TG (Timing Generator) 4 that drives the CCD 2 at a predetermined frame rate, and an analog imaging signal corresponding to the optical image of the subject output from the CCD 2 is input to the TG 4. A unit circuit 5 is connected. The unit circuit 5 includes a correlated double sampling circuit (CDS circuit) that reduces drive noise of the CCD 2 included in the imaging signal output from the CCD 2, and an automatic gain control circuit (AGC circuit) that adjusts the gain of the signal after noise reduction. ) Including an A / D converter that converts the gain-adjusted signal into a digital signal, converts an analog imaging signal input from the CCD 2 into a digital image signal, and sends the digitized Bayer data to the DSP / CPU 3.

  A display device 6 and a key input unit 7 are connected to the DSP / CPU 3, and a buffer memory (DRAM) 11, a ROM 12, a storage memory 13, and an input / output interface 14 are connected via an address / data bus 10. Yes. The buffer memory 11 is a buffer for temporarily storing the Bayer data and the like, and is also used as a working memory for the DSP / CPU 3.

  That is, the DSP / CPU 3 performs processing such as pedestal clamping on the Bayer data sent from the unit circuit 5 and then converts the data into RGB data, and further converts the RGB data into a luminance (Y) signal and a color difference (UV). Convert to signal. The YUV data converted by the DSP / CPU 3 stores data for one frame in the buffer memory 11. One frame of YUV data stored in the buffer memory 11 is sent to the display device 6, where it is converted into a video signal and then displayed as a through image.

  Further, when a shutter key operation by the user is detected in the still image shooting mode, the still image shooting process is performed by switching the CCD 2 and the unit circuit 5 to a still image shooting driving method and drive timing different from those for through image shooting. The YUV data for one frame stored in the buffer memory 11 by this still image shooting processing is encoded after being compressed by the DSP / CPU 3 using the JPEG method or the like, and then converted into a file in the buffer memory 11. The still image data (still image file) is recorded in the storage memory 13 via the address / data bus 10.

  In addition, when a recording start trigger is detected by a user's operation of a recording start key or the like in the video mode, a recording process is started, and a plurality of frames until the end trigger is detected by an operation of a recording end key or the like. YUV data is stored in the buffer memory 11.

  The YUV data for a plurality of frames stored in the buffer memory 11 is sequentially sent to the DSP / CPU 3 and is encoded after data compression by the JPEG method or the like (a predetermined MPEG codec in the case of moving image shooting). In addition, a file name is given as moving image data via the address / data bus 10 and written to the storage memory 13.

  Further, the DSP / CPU 3 expands the still image or moving image data read from the storage memory 13 when reproducing the still image or moving image, and the image data work area of the buffer memory 11 as still image data or moving image frame data. Expand to.

  The display device 6 includes a color LCD and its driving circuit, and displays the subject image captured by the CCD 2 as a through image when in the shooting standby state, and is read out from the storage memory 13 and expanded when the recorded image is played back. The recorded image is displayed. The key input unit 7 includes a plurality of operation keys such as a shutter key, a mode setting key, a recording start key and a recording end key, a protect key, a menu key, and a power key. A key input signal corresponding to a key operation by the user is provided. Output to the DSP / CPU 3. The shutter key also functions as a movie start / end button in the movie shooting mode.

  The ROM 12 is a program diagram showing combinations of aperture values (F) and shutter speeds corresponding to appropriate exposure values (EV) at the time of shooting such as still image shooting, moving image shooting, and through image shooting. Are also stored. The charge accumulation time set by the DSP / CPU 3 based on the shutter speed set by the program diagram is supplied as a shutter pulse to the CCD 2 via the TG 4, and the charge accumulation time, that is, the exposure time is obtained by operating the CCD 2 in accordance with this. Is controlled. That is, the CCD 2 functions as an electronic shutter. Further, the ROM 12 stores a program shown in a flowchart to be described later and various programs necessary for functioning as a digital camera.

  Further, an input / output interface 14, an impact sensor 15, and a combined file memory 16 are connected to the DSP / CPU 3. Therefore, the digital camera 1 can be connected to an external device such as a printer, a personal computer, or a TV receiver via the input / output interface 14. The impact sensor 15 is turned on when a predetermined impact or more occurs in the vehicle and operates the airbag system. The impact ON signal from the impact sensor 15 is input to the DSP / CPU 3. The combined file memory 16 is a memory that records a combined file when a single combined file is created by combining divided files recorded in the storage memory 13 by processing to be described later.

  Next, the operation of this embodiment according to the above configuration will be described with reference to the flowchart shown in FIG. When a recording start key provided in the key input unit 7 is operated, the DSP / CPU 3 controls the TG 4 to start moving image shooting for driving the CCD 2 at a recording frame rate of 30 fps, for example, and this flowchart according to the program. The process is executed as shown in FIG. That is, a file open process is executed to secure a moving image data storage area in the buffer memory 11 (step SA1). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SA2).

  Next, it is determined whether or not a recording end trigger is generated by a recording end operation at the key input unit 7 or a recording end instruction based on occurrence of a predetermined condition (step SA3). If the recording end trigger has not occurred, it is determined whether or not a certain time (10 minutes in this embodiment and each embodiment described later) has elapsed (step SA4), and the certain time has elapsed. If not, the process returns to step SA2. Therefore, the loop of steps SA 2 → SA 3 → SA 4 → SA 2 is repeated until a recording end trigger occurs or a predetermined time elapses, and frame image data is sequentially stored in the buffer memory 11.

  When a certain time (10 minutes) has elapsed since the start of recording, the determination in step SA4 is YES. Therefore, the process proceeds from step SA4 to step SA5 to execute file creation processing. At this time, frame image data for a certain time (10 minutes) is stored with high accuracy in the storage area secured in step SA1 of the buffer memory 11. Therefore, in this file creation process (step SA5), the frame image data group stored in the buffer memory 11 is compressed into a file within the predetermined time. Subsequently, a recording process is executed, and the file created in step SA5 (hereinafter also referred to as a divided file) is recorded in the storage memory 13 (step SA6).

  FIG. 2B is a flowchart showing details of the recording process (step SA6). First, it is determined whether or not there is an area in the storage memory 13 where a divided file in which the frame image data for a certain period of time is made into one file can be recorded (step S1). In other words, in this embodiment, since the recording frame rate is constant and the recording time is also constant, the recording amount of this recording is converted into a file and saved by considering the compression rate at the time of file creation. Thus, the capacity required for storing the data in 13 can be easily calculated. Further, since the remaining capacity of the storage memory 13 can be easily detected, it is possible to determine whether or not a new file can be recorded in the storage memory 13 by comparing the required capacity with the remaining capacity. .

  If the storage memory 13 has a capacity for recording a new file (step S1; YES), a new file process is executed (step S2). That is, a file name is assigned to the divided file created by the file creation process (step SA4) and recorded in an empty area of the storage memory 13. Therefore, as shown in FIG. 3A, the moving image files CIMG0001. AVI-CIMG0025. In the state where AVI is stored, if the determination in step S1 is YES, as shown in FIG. 3 (B), a new CIMG0026. An AVI movie file is recorded.

  However, as shown in FIG. 3B, CIMG0026. If it is impossible to record a new divided file in the storage memory 13 by recording the AVI moving image file, the determination in step S1 is NO. Therefore, in this case, the process proceeds from step S1 to S3, and overwrite file processing is executed. That is, as shown in FIG. 3C, the oldest divided file in the storage memory 13 is CIMG0001. Delete the AVI and overwrite the newly created split file.

  The file name of the divided file uses a serial value. Therefore, CIMG0001. The file name when overwriting the divided file created this time by deleting AVI is CIMG0027. AVI. And if the process of step S2 or step S3 is performed, it will return to step SA1.

  Therefore, the loop from step SA1 to SA6 → step SA1 is repeatedly executed until the recording end trigger is detected in step SA3, and the new divided file is recorded in the storage memory 13 while the oldest divided file is deleted. Go.

  When the recording end trigger is detected, the determination in step SA3 is YES, and the process proceeds from step SA3 to step SA7. In step SA7, a recording stop process is executed to stop the driving of the CCD 2 at the recording frame rate of 30 fps, and the live image display frame rate is switched to a lower frame rate. Further, a file close process is executed to prohibit writing of frame image data to the buffer memory 11 (step SA8). Further, a through image is displayed on the display device 6 based on the frame image data captured at the through image display frame rate switched in step SA10 (step SA9).

  Therefore, according to the present embodiment, the plurality of divided files recorded in the storage memory 13 are all for a fixed time (10 minutes). Therefore, when an unexpected event occurs during recording, it is possible to easily search in which divided file the images before and after a predetermined time from the time when the event occurred are recorded. Also, management based on a plurality of divided file times recorded in the storage memory 13 is facilitated. Therefore, by managing and searching a plurality of divided files recorded in the storage memory 13 based on time, when the cause of the event is solved, the file is quickly searched and the cause is quickly clarified. It becomes possible to do.

  In the present embodiment, immediately before recording the divided file in the storage memory 13, it is determined whether or not there is an area in the storage memory 13 where a new file can be recorded (step S1). . However, as shown in FIG. 4A, immediately after recording the new file “temp0001.AVI”, it is determined whether or not an area where the next new file can be recorded remains. As shown in FIG. 4B, the oldest file CIMG0001. The AVI may be deleted, and then “temp0001.AVI” may be renamed to “CIMG0001.AVI” as shown in FIG.

  By processing in this way, when recording a new file, there is always a free space in the storage memory 13, and a reliable new file can be recorded.

  In the present embodiment, the process from step SA1 is started without deleting the divided file recorded in the storage memory 13 until the previous recording stop, but the process of step SA1 is started. Immediately before this, all file erasure processing for erasing all divided files and directories recorded in the storage memory 13 may be executed. Thereby, forgetting to delete unnecessary divided files can be prevented.

  Further, in the present embodiment, as shown in FIG. 5A, a plurality of divided files a to f (six files in the figure) are sequentially recorded in units of 10 minutes, which is a fixed time, and new divided files are recorded. When it becomes impossible, the oldest divided file a is deleted and a new divided file is recorded. However, as shown in FIG. 5B, when it becomes impossible to record a new divided file, the oldest file a is left and the next old divided file b is sequentially deleted and recorded. It may be. In this way, if the oldest divided file a remains at the recording start time, the divided files are combined in time series as will be described later, and the change from the recording start time is confirmed when the divided files are played back. Easy to do.

  Also, as shown in FIG. 5C, when recording of a new divided file becomes impossible, file division is performed for each of the divided files a to f, leaving only the first two minutes, and the rest is deleted. Then, a new divided file may be recorded. Thereby, although it is intermittent, the image of the whole area in recording time can be recorded. In this case, when the number of files for 2 minutes becomes 5, when these files are combined into one file, the combined file can be made into a unit of 10 minutes in the same manner as other divided files.

In FIG. 5C, when recording of a new divided file becomes impossible, file division is performed so that only the first two minutes are left from each of the divided files a to f. As shown in (D), file division may be performed using a thinning technique.
That is, when recording of a new divided file becomes impossible, the frame image data is divided from the divided files a to f for 10 minutes shown in (1) of FIG. The frame image data a ′ to f ′ having a ratio of 20% are left evenly thinned and deleted. Then, 20% of the frame image data a ′ to f ′ remaining in each of the divided files a to f are combined to generate a new divided file x corresponding to 10 minutes shown in (2). Thereby, a memorable area for 50 minutes is formed.

  Next, as shown in (3), when the newly divided files g to k are stored in the formed 50-minute storage area and recording of the new divided file becomes impossible, ( The frame image data is equally thinned out at a ratio of 80%, for example, and deleted from the divided files x, g to k for 10 minutes shown in 4), respectively, and the frame image data x ′, g ′ to 20% is deleted. Let k 'remain. Then, the 20% frame image data x ′ and g ′ to k ′ remaining in each of the divided files x ′ and g ′ to k ′ are combined to form a new expression for 10 minutes as shown in (2). A divided file x is generated. Thereafter, the loop of (2) → (3) → (4) → (2) is repeated.

  Here, focusing on the old divided files a to f, 20% of the frame image data a ′ to f ′ remains in the new divided file x by the first thinning of (1). , (4), the frame image data a ″ to f ″ remain in the new divided file x ′, which is 20% of the second thinning.

  Accordingly, the frame image up to the present time can be left in a state including the frame image of the oldest file although the number of frames is small.

  Further, as described above, the new divided file x is deleted from the divided files x, g to k for 10 minutes by thinning out the frame image data evenly at a ratio of 80%, for example, to obtain a frame with a ratio of 20%. Since the image data x ′ and g ′ to k ′ remain, when they are reproduced at the same frame rate as the shooting frame rate, the reproduction is 5 × speed. In addition, when the new divided file x ′ is reproduced at the same frame rate as the shooting frame rate, it is reproduced at 25 × speed.

  Therefore, it is possible to quickly reproduce an old frame image having a relatively low importance at a speed corresponding to the age.

  Note that the thinning rate of 80% used in the above description is merely an example, and the thinning rate may be any value. In addition, the thinning rate in each file does not need to be the same, and the thinning rate may be increased in the order of the oldest file, or the thinning rate may be decreased.

  FIG. 6 is a flowchart showing a processing procedure after the end of recording in the present embodiment. It is determined whether or not there is an instruction to perform file combination by an operation on the key input unit 7 by the user (step SB1). If there is no instruction for file combination, the above-described display of the through image is continued (step SB2). If there is an instruction to combine files, the files recorded in the storage memory 13 are sequentially read into the buffer memory 11, and the read files are combined in the buffer memory 11 (step SB3). At this time, since each file recorded in the storage memory 13 has a serial file name as described above, it can be read into the buffer memory 11 in the oldest order by referring to the file name.

  Further, the divided file read into the buffer memory 11 in step SB3 is deleted from the storage memory 13 (step SB4). Next, it is determined whether or not all divided files have been combined (step SB5), and the loop of step SB3 → SB4 → SB5 → SB3 is repeated until the combination of all the divided files is completed. Therefore, by repeatedly executing this loop, the division file is read from the storage memory 13 to the buffer memory 11, the division files are combined in the buffer memory 11, and the division file read into the buffer memory 11 is stored in the storage memory. The process of deleting from 13 is repeated.

  Therefore, when the combination of all the divided files in the buffer memory 11 is completed and the determination in step SB5 is YES, all the divided files in the storage memory 13 are deleted and become empty, while all the files in the buffer memory 11 are stored. A combined file is generated by combining the frame image data of the divided files in time series. Therefore, this combined file is recorded in the free storage memory 13 (step SB7). Thus, a single file in which the frame image data of each divided file is combined in time series can be generated and saved. After that, the through image display state is entered (step SB7).

  In this embodiment, the combined file is generated in the buffer memory 11 and the divided file in the storage memory 13 is deleted. However, without deleting the divided file in the storage memory 13, A single file may be generated by combining the divided files by processing in the storage memory 13.

  Further, the file name used for the divided file is not limited to a serial value, and any file name may be used as long as the time series of each divided file such as a time stamp can be recognized.

(Second Embodiment)
FIG. 7 is a flowchart showing a processing procedure during recording in the second embodiment of the present invention. That is, a file open process is executed to secure a moving image data storage area in the buffer memory 11 (step SC1). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SC2).

  Next, it is determined whether or not a protect key operation input has been made by the user at the key input unit 7 (step SC3). If there is a protect key operation input, the protect flag is turned ON (step SC4). Further, it is determined whether or not a recording end trigger has occurred (step SC5). If a recording end trigger has not occurred, it is determined whether or not a certain time (10 minutes) has elapsed (step SC6). If a certain time has not elapsed, the process returns to step SC2. Therefore, the loop of steps SC 2 → SC 3 → SC 4 → SC 5 → SC 6 → SC 2 is repeated until a recording end trigger occurs or a predetermined time elapses, and frame image data is sequentially stored in the buffer memory 11.

  When a certain time (10 minutes) has elapsed since the start of recording, the determination in step SC6 is YES. Therefore, the process proceeds from step SC6 to step SC7 to execute the file creation process described above. Subsequently, the recording process described in FIG. 2B is executed, and the divided file created in step SC7 is recorded in the storage memory 13 (step SC8).

  At this time, in the overwriting process in step S3 of FIG. 2B in the present embodiment, unlike the first embodiment described above, the oldest file is deleted except the protected divided files. And overwrite the created file. Note that, as in the first embodiment, the oldest file may be simply deleted in the storage memory 13 and the file created this time may be overwritten.

  Next, it is determined whether or not the protect flag is ON (step SC9). If it is ON, the divided file recorded this time in the storage memory 13 by the recording process (step SC8) is protected. (Step SC10). Subsequently, the protect flag is turned OFF (step SC11), and the process returns to step SC1.

  Therefore, the loop of steps SC1 to SC11 → step SC1 is repeatedly executed until the recording end trigger is detected in step SC3, and the new divided file is recorded in the storage memory 13 while the oldest divided file is deleted. If the protect flag is ON, the recorded divided file is protected.

  When the recording end trigger is detected, the determination in step SC3 is YES, and the process proceeds from step SC3 to step SC12. In this step SC12, the same recording stop process as described above is executed, the drive of the CCD 2 at the recording frame rate of 30 fps is stopped, and the through image display frame rate having a lower frame rate is switched to this. Also, a file close process is executed to prohibit writing of frame image data to the buffer memory 11 (step SC13). Further, the through image is displayed on the display device 6 based on the frame image data captured at the through image display frame rate switched in step SC10 (step SC14).

  Therefore, according to the present embodiment, as in the first embodiment, not only can a plurality of files recorded in the storage memory 13 be managed and searched based on time, but also the user can The divided file at the time when the protect key is operated can be protected and recorded.

  FIG. 8 is a flowchart showing a processing procedure after the end of recording in the present embodiment. It is determined whether or not there is an instruction to perform file combination by an operation of the key input unit 7 by the user (step SD1). If there is no instruction for file combination, the above-described display of the through image is continued (step SD2). If there is an instruction to combine files, the divided files recorded in the storage memory 13 are sequentially read into the buffer memory 11, and the read divided files are combined in the buffer memory 11 (step SD3). ).

  Next, it is determined whether or not an instruction for deleting a protected divided file has been made in advance by an operation of the key input unit 7 by the user (step SD4). If an instruction to delete the protected divided file is given in advance (step SD4; YES), the divided file read into the buffer memory 11 in step SD3 is immediately deleted from the storage memory 13 (step SD5). .

  Further, if there is no instruction to delete the protected divided file in advance and the user intends to leave the protected divided file, the divided file read into the buffer memory 11 in step SD3 is the protected file. Is determined (step SD6). If it is not a protected file, the process proceeds to step SD5, and the divided file read into the buffer memory 11 in step SD3 is deleted from the storage memory 13. However, if it is a protected file, the process proceeds to step SD7 without executing the process of step SD5.

  Therefore, the protected file can be left in the storage memory 13 without deleting the protected file at the time of file combination.

  Then, in step SD7 following step SD5 or step SD6, it is determined whether or not all the divided files are combined, and the loop of steps SD3 to SD7 → SD3 is repeated until the combination of all the divided files is completed. Therefore, by repeatedly executing this loop, the reading of the divided file from the storage memory 13 to the buffer memory 11 and the combination of the divided files in the buffer memory 11 are repeated. Further, depending on whether or not an instruction to delete the protected divided file has been made in advance, the process of deleting the divided file read into the buffer memory 11 from the storage memory 13 or the deletion of the divided files excluding the protected file is repeated. .

  Therefore, when the combination of all the divided files in the buffer memory 11 is completed and the determination in step SD7 is YES, all the divided files in the storage memory 13 are deleted and become empty, or the protected file remains. In addition, a combined file in which the frame image data of all the divided files are combined in time series in the buffer memory 11 is generated. Therefore, this combined file is recorded in the combined file memory 16 (step SD8), and the live image display state is entered (step SD9).

Therefore, according to the present embodiment, it is possible to generate and save a single file in which the frame image data of each divided file is combined in time series, and to leave the protected file.
In the present embodiment, all divided files are combined, but the case where only protected files are combined will be described later.

  In this embodiment, all the divided files are simply combined. However, the frame images of files other than the protected file are re-encoded to reduce the bit rate and the image size. You may make it combine a file. As a result, frame images corresponding to important protected files are combined at the bit rate and image size at the time of recording, while frame images corresponding to files other than the less important protected files are compared to those at the time of recording. Combined by bit rate and image size. Thereby, it is possible to reduce the capacity of the combined file while enabling clear reproduction of the frame image having high importance.

(Third embodiment)
FIG. 9 is a flowchart showing a processing procedure in the third embodiment of the present invention. When the user operates the menu key on the key input unit 7, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, the moving image recording time change selection screen is displayed on the display device 6 (step SE1). This video recording time change selection screen includes options of “desired time” and “desired recording frame rate”. If the user selects “desired time” from the options “desired time” and “desired recording frame rate”, the determination in step SE2 is YES. Accordingly, the process proceeds from step SE2 to step SE3, and a plurality of types of recordable times are calculated based on the capacity of the storage memory 13 and a plurality of types of frame rates, and the calculated types of recordable times are displayed on the display device 6. Display (step SE3). If any one of the displayed plural types of recordable times is selected, the determination in step SE4 is YES. Accordingly, the process proceeds from step SE4 to step SE8, and the frame rate at the time of recording is updated to a frame rate corresponding to the selected recordable time.

  In step SE5 following step SE2 or step SE4, it is determined whether or not “desired recording frame rate” is selected from the options “desired time” and “desired recording frame rate”. When “desired recording frame rate” is selected, a plurality of types of frame rates are calculated based on the capacity of the storage memory 13 and a plurality of types of recordable time, and the calculated types of frame rates are displayed. The information is displayed on the device 6 (step SE6). When any one of the displayed frame rates is selected, the determination in step SE7 is YES. Accordingly, the process proceeds from step SE7 to step SE8, and the frame rate at the time of recording is updated to a frame rate corresponding to the selected recordable time.

  When the frame rate is updated in this way, the updated frame rate is used in the recording process of the flowchart of FIG. 2 in the first embodiment and the flowchart of FIG. 7 in the second embodiment. Record.

  Therefore, according to the present embodiment, in the storage memory 13 having a limited storage capacity, it is arbitrarily selected whether to perform video recording with priority on the recording time or video with priority on the frame rate. be able to. As a result, it is possible to record an appropriate moving image according to the purpose and application within a limited storage capacity.

(Fourth embodiment)
FIG. 10 is a flowchart showing a processing procedure in the fourth embodiment of the present invention. When the user sets the monitoring moving image recording mode by operating the key input unit 7, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, first, a dynamic state is detected (step SF1). In detecting the dynamic state, the frame images sequentially fetched from the CCD 2 at a predetermined frame rate are compared, and the difference and the coincidence point are detected to determine the dynamic state based on the difference. If the dynamics are detected in this manner, the detected dynamic images are stored in a predetermined area of the buffer memory 11 (step SF2).

  Next, a file open process is executed to secure a storage area for moving image data in the buffer memory 11 (step SF3). Subsequently, it is determined whether or not a recording end trigger has occurred (step SF4). If the recording end trigger has not occurred, it is determined whether or not other dynamics have been detected (step SF5). In other words, the dynamic stored in step SF1 is a steady dynamic, and the stationary dynamic is ignored and it is determined whether any other dynamic is detected. Then, the loop of steps SF4 → SF5 → SF4 is repeated until the recording end trigger is generated or another dynamic is detected.

  When other dynamics are detected during standby in this loop and the determination in step SF5 is YES, the moving image recording start process is executed, and the frame obtained at the frame rate is stored in the storage area secured in the buffer memory 11. Recording of image data is started (step SF6). In addition, it is determined whether or not a total of a certain amount of time (10 minutes) has been recorded in the storage area secured in the buffer memory 11 (step SF7). If the recording for a fixed time has not been made in total, it is determined whether or not the detection of the other dynamics is continued (step SF8). The loop of steps SF7 → SF8 → SF7 is repeated until the detection of other dynamics is completed or the recording for a fixed time is made in total, and the storage of the frame image data is continued.

  When no other dynamics are detected and the determination in step SF8 is NO, the process proceeds from step SF8 to step SF9 to execute the moving image recording end process, and the writing of the frame image data to the buffer memory 11 is stopped. The process returns to step SF4. Therefore, in the present embodiment, the recording process is stopped when no other dynamics are detected, and the frame image data is written into the buffer memory 11 only in the detected state. Therefore, the frame memory 11 can store only frame image data in a state where other dynamics are detected.

  Then, when the total recording time of the frame image data in a state where the other dynamics are detected reaches a certain time, the determination in step SF7 becomes YES. Accordingly, the process proceeds from step SF7 to step SF10 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, the divided file created in step SF10 is recorded in the storage memory 13 (step SF11), and the process returns to step SF3.

  On the other hand, when the recording end trigger is detected, the determination in step SF4 is YES, and the process proceeds from step SF4 to step SF12. In this step SF12, recording stop processing similar to that described above is executed, the drive of the CCD 2 at the recording frame rate of 30 fps is stopped, and the through image display frame rate having a lower frame rate is switched to this. Further, a file close process is executed to prohibit writing of frame image data into the buffer memory 11 (step SF13). Further, the through image is displayed on the display device 6 based on the frame image data captured at the through image display frame rate switched in step SF10 (step SF14).

  Therefore, in the present embodiment as well, as in the first and second embodiments, all of the plurality of files recorded in the storage memory 13 are fixed time, so that they can be managed and searched based on time. can do.

  Further, in the present embodiment, since the recording is performed only in a state where the dynamics are detected, efficient monitoring moving image recording is possible.

(Fifth embodiment)
11 and 12 are views showing a fifth embodiment of the present invention. In the present embodiment, the buffer memory 11 is provided with a ring buffer 111 and a file buffer 112 as shown in FIG. The ring buffer 111 is a buffer that circularly stores frame image data for several seconds, for example, 30 seconds, by sequentially recording new frame image data while erasing the oldest frame image data. The file buffer 112 is a storage area that is secured by a file open process described later and stores frame image data for a predetermined time (10 minutes).

  FIG. 12 is a flowchart showing a processing procedure in the present embodiment. When the user selects the divided moving image recording mode by operating the key input unit 7, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, the circular storage to the ring buffer 111 is started (step SG1), whereby the frame image data from the present time to the past 30 seconds is always updated and stored in the ring buffer 111. Next, it is determined whether or not a recording start trigger has occurred (step SG2), and if a recording start trigger has occurred, a file open process is executed, and the buffer memory 11 is fixed in shooting at the frame rate. The file buffer 112, which is a storage area for the recording time, is secured (step SG3). Subsequently, the data recording process before the designated time is executed, and the frame image data before the designated time, for example, 15 seconds before the recording start trigger is read out from the ring buffer 111. The image data is copied to the file buffer 112 (step SG4).

  Next, a recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area following the copied storage area in the file buffer 112 of the buffer memory 11 (step SG2). Further, it is determined whether or not a recording end trigger has occurred (step SG6). If the recording end trigger has not occurred, it is determined whether or not a fixed time has elapsed (step SG7). Here, unlike the above-described embodiments, the fixed time is a time obtained by subtracting the past time 15 seconds copied in step SG4 from 10 minutes that is the recording time of the divided file, that is, in this embodiment. 9 minutes 45 seconds. And when this fixed time (9 minutes 45 seconds) has not passed, it returns to step SG5. Therefore, the loop of steps SG5 → SG6 → SG7 → SG5 is repeated until a recording end trigger occurs or a predetermined time elapses, and new frame image data is sequentially stored in the buffer memory 11.

  When a certain time (9 minutes 45 seconds) has elapsed from the start of recording, the determination in step SG7 is YES. Accordingly, the process proceeds from step SG7 to step SG8 to execute the file creation process described above. Subsequently, the recording process described in FIG. 2B is executed, and the divided file created in step SG8 is recorded in the storage memory 13 (step SG9).

  Therefore, in the present embodiment, the frame image data that has been past for 15 seconds and the frame image data that has been past for 15 seconds from the point in time when recording of new frame image data to the file buffer 112 is started 9. A divided file of 10 minutes in total consisting of the frame image data up to the point when the minute 45 seconds elapses is recorded in the storage memory 13.

  Further, the loop of steps SG3 to SG9 is repeatedly executed until a recording end trigger is detected in step SG3, and a new divided file is recorded in the storage memory 13 while erasing the oldest divided file.

  When the recording end trigger is detected, the determination in step SG6 is YES, and the process proceeds from step SG6 to step SG10. In this step SG10, the circular storage to the ring buffer 111 is stopped, the recording stop process is executed, the driving of the CCD 2 at the recording frame rate of 30 fps is stopped, and the through image display frame having a lower frame rate than this is stopped. Switch to rate. Further, a file close process is executed to prohibit writing of frame image data into the buffer memory 11 (step SG11). Further, a through image is displayed on the display device 6 based on the frame image data captured at the through image display frame rate switched in step SG10 (step SG12).

  Therefore, according to the present embodiment, the plurality of files recorded in the storage memory 13 include frame image data for the past 15 seconds from the time of writing to the file buffer 112, and are all for a fixed time (10 minutes). It is. Therefore, when an unexpected event occurs during recording, it is possible to easily search in which file the images before and after the predetermined time are recorded. It is also easy to manage a plurality of files recorded in the storage memory 13 based on time. Therefore, by managing and searching a plurality of files recorded in the storage memory 13 based on time, when the cause of the event is clarified, the file is quickly searched and the cause is clarified at an early stage. It becomes possible.

(Sixth embodiment)
FIG. 13 is a flowchart showing a processing procedure in the sixth embodiment of the present invention. When the user sets the monitoring moving image recording mode by operating the key input unit 7, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, first, a dynamic state is detected (step SH1). In detecting the dynamic state, the frame images sequentially fetched from the CCD 2 at a predetermined frame rate are compared, and the difference and the coincidence point are detected to determine the dynamic state based on the difference. If dynamics are detected in this way, the detected dynamic images are stored in a predetermined area of the buffer memory 11 (step SH2).

  Next, a file open process is executed to secure a storage area for moving image data in the buffer memory 11 (step SH3). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SH4). Further, it is determined whether or not a certain time (10 minutes) has elapsed (step SH5). If the certain time has not elapsed, it is determined whether or not other dynamics have been detected (step SH6). That is, the dynamics stored in step SH1 are steady dynamics, and the static dynamics are ignored and it is determined whether any other dynamics are detected. If no movement is detected, it is determined whether a recording end trigger has occurred (step SH7). If no recording end trigger has occurred, the process returns to step SH4.

  Therefore, before a certain time elapses, the loop of steps SH4 → SH5 → SH6 → SH7 → SH4 is repeated until the dynamic state is detected or the recording end trigger is generated, and the frame image data is sequentially stored in the buffer memory 11. To go.

  When a certain time (10 minutes) has elapsed since the start of recording, the determination in step SH5 is YES. Accordingly, the process proceeds from step SH5 to step SH8 to execute the file creation process described above. Subsequently, the recording process described in FIG. 2B is executed, the divided file created in step SH8 is recorded in the storage memory 13 (step SH9), and the process returns to step SH3.

  On the other hand, in the state where the loop of step SH4 → SH5 → SH6 → SH7 → SH4 is repeated, if other dynamics are detected and the determination in step SH6 is YES, the process proceeds from step SH6 to step SH8, as described above Steps SH8 and SH9 are executed, the process returns to step SH3, and the process from step SH3 described above is started.

  Therefore, in the present embodiment, the static moving image data up to the time when the dynamic state is detected in step SH6 and the detected dynamic moving image data can be recorded as separate files in the storage memory 13. Further, when the dynamics are detected and the determination in step SH6 is YES, the process proceeds from step SH6 to step SH8, and when the above-described steps SH8 and SH9 are executed, the file open process is immediately executed again. Thus, a state where a maximum (10 minutes) recording is possible is formed.

  Therefore, according to the present embodiment, the dynamic moving image data after the dynamics are detected can be recorded as long as possible (10 minutes).

  Further, when the recording end trigger is detected in a state where the loop of step SH4 → SH5 → SH6 → SH7 → SH4 is repeated, the determination in step SH7 becomes YES, and the process proceeds from step SH7 to step SH10. In this step SH10, the same recording stop process as described above is executed, the drive of the CCD 2 at the recording frame rate of 30 fps is stopped, and the through image display frame rate having a lower frame rate is switched to this. Further, a file close process is executed to prohibit writing of frame image data to the buffer memory 11 (step SH11). Further, the through image is displayed on the display device 6 based on the frame image data captured at the through image display frame rate switched in step SH13 (step SH12).

  In the present embodiment, until dynamics are detected in step SH6, frame image data is recorded at a low bit rate or a small image size. After dynamics are detected in step SH6, the processing from step SH3 is performed. When starting the storage for the next file, it is preferable to record the frame image data at a high bit rate or a large image size. As a result, static video data with low importance can be recorded with a low bit rate and a small image size, while dynamic video data with high importance can be clearly recorded with a high bit rate and a large image size. .

(Seventh embodiment)
FIG. 14 is a flowchart showing a processing procedure in the seventh embodiment of the present invention. When the user sets the monitoring moving image recording mode by operating the key input unit 7, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a file open process is executed to secure a storage area for moving image data obtained by shooting at the frame rate in the buffer memory 11 (step SI1). Subsequently, moving image recording at a low frame rate is started, and frame image data obtained at a low frame rate, for example, 30 fps is stored in the storage area secured in the buffer memory 11 (step SI2).

  Also, it is determined whether or not a recording end trigger has occurred (step SI3). If a recording end trigger has not occurred, it is determined whether or not dynamics have been detected by comparing the preceding and following frame images and determining whether or not a difference has occurred (step SI4). Then, the loop of steps SI3 → SI4 → SI3 is repeated until a recording end trigger occurs or dynamics are detected, and storage of the frame image data at the low frame rate is continued.

  If dynamics are detected during the storage of the frame image data at the low frame rate and the determination in step SI4 is YES, the process proceeds from step SI4 to step SI5, and after moving image recording at the low frame rate is stopped (step SI5), moving image recording at a high frame rate is started (step SI6). The high frame rate is a frame rate higher than the low frame rate (30 fps), for example, 60 fps. Therefore, the frame image data obtained at 30 fps is stored in the storage area secured in the buffer memory 11 after the frame image data obtained at 60 fps.

  Also, it is determined whether or not a recording end trigger has occurred (step SI7). If the recording end trigger has not occurred, the previous and next frame images are compared, and based on the difference, it is determined whether dynamics are no longer detected (step SI8). Then, the loop of steps SI7 → SI8 → SI7 is repeated until the recording end trigger is generated or the dynamic state is not detected, and the storage of the frame image data at the high frame rate is continued.

  If dynamics are not detected during storage of the frame image data at the high frame rate and the determination in step SI8 is YES, the process proceeds from step SI8 to step SI9, and the moving image recording at the high frame rate is stopped. Next, it is determined whether or not a predetermined time (10 minutes) has elapsed since the start of storing frame image data in step SI4 (step SI10), and the processing from step SI2 is performed until the predetermined time has elapsed. repeat.

  Therefore, in the present embodiment, frame image data obtained at a low frame rate is stored in the buffer memory 11 in a state where dynamics are not detected, and at a high frame rate in a state where dynamics are detected.

  When a certain time (10 minutes) has elapsed since the start of recording, the determination in step SI10 is YES. Therefore, the process proceeds from step SI10 to step SI11 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, the divided file created in step SI11 is recorded in the storage memory 13 (step SI12), and the process returns to step SI1.

  Therefore, the loop of steps SI1 to SI12 is repeatedly executed until the recording end trigger is detected in step SI3 or step SI7, and the new divided file is recorded in the storage memory 13 while the oldest divided file is deleted. Go.

  When the recording end trigger is detected, the determination in step SI3 or step SI7 is YES, and the process proceeds to step SI13. In this step SI13, recording stop processing similar to that described above is executed, the drive of the CCD 2 at the recording frame rate of 30 fps or 60 fps is stopped, and the through image display frame rate that is lower than these is switched. Further, a file close process is executed to prohibit writing of frame image data to the buffer memory 11 (step SI14). Further, a through image is displayed on the display device 6 based on the frame image data captured at the through image display frame rate switched in step SI10 (step SI15).

  Therefore, according to the present embodiment, the plurality of files recorded in the storage memory 13 are all for a fixed time (10 minutes). Therefore, when an unexpected event occurs during recording, it is possible to easily search in which file the images before and after the predetermined time are recorded. It is also easy to manage a plurality of files recorded in the storage memory 13 based on time. Therefore, by managing and searching a plurality of files recorded in the storage memory 13 based on time, when the cause of the event is clarified, the file is quickly searched and the cause is clarified at an early stage. It becomes possible.

  Further, in each divided file, frame image data captured at a low frame rate is stored in a state where no dynamic state is detected, and in a state where the dynamic state is detected, frame image data captured at a high frame rate is stored. Therefore, it is possible to clearly reproduce and display a moving image in a state where dynamics important for elucidating the cause of the event are detected. Also, only the frame image data recorded at a high frame rate from each divided file is left and combined according to a time series, whereby a dynamic-only moving image can be easily created.

(Eighth embodiment)
FIG. 15 is a flowchart showing a processing procedure in the eighth embodiment of the present invention. When a recording start key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a file open process is executed to secure a moving image data storage area in the buffer memory 11 (step SJ1). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SJ2).

  Next, it is determined whether or not dynamics have been detected by comparing the preceding and following frame images and determining whether or not the difference has occurred (step SJ3). If no dynamic is detected, the process proceeds to step SJ5 without executing the process of step SJ4. If a dynamic state is detected, a dynamic flag is added to the frame image data stored in step SJ2 (step SJ4).

  Further, it is determined whether or not a certain time (10 minutes) has elapsed (step SJ5). If the predetermined time has not elapsed, it is determined whether or not a recording end trigger has occurred (step SJ6). If no recording end trigger has occurred, the process returns to step SJ2. Accordingly, the loop of steps SJ2 to SJ6 is repeated until a certain time elapses or a recording end trigger is generated, and frame image data is sequentially stored in the buffer memory 11, and a frame image in which dynamics are generated. A dynamic flag is added to the data and stored.

  When a certain time (10 minutes) has elapsed since the start of recording, the determination in step SJ5 is YES. Therefore, the process proceeds from step SJ5 to step SJ7 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, the divided file created in step SJ7 is recorded in the storage memory 13 (step SJ8), and the process returns to step SJ1.

  Therefore, the loop of steps SJ1 to SJ11 is repeatedly executed until a recording end trigger is detected in step SJ6, and the oldest divided file is erased and a new divided file is recorded in the storage memory 13.

  When the recording end trigger is detected, the determination in step SJ6 is YES, and the process proceeds from step SJ6 to step SJ9. In this step SJ9, the same recording stop process as described above is executed, the drive of the CCD 2 at the recording frame rate of 30 fps is stopped, and the through image display frame rate having a lower frame rate is switched to this. Further, a file close process is executed to prohibit writing of frame image data to the buffer memory 11 (step SJ10). Further, a through image is displayed on the display device 6 based on the frame image data captured at the through image display frame rate switched in step SJ9 (step SJ11).

  Therefore, according to the present embodiment, the plurality of files recorded in the storage memory 13 are all for a fixed time (10 minutes). Therefore, when an unexpected event occurs during recording, it is possible to easily search in which file the images before and after the predetermined time are recorded. It is also easy to manage a plurality of files recorded in the storage memory 13 based on time. Therefore, by managing and searching a plurality of files recorded in the storage memory 13 based on time, when the cause of the event is clarified, the file is quickly searched and the cause is clarified at an early stage. It becomes possible.

  Further, in each divided file, a dynamic flag is added to the frame image data recorded when the dynamic is detected. Therefore, only the frame image data to which the dynamic flag is added from each divided file is left and combined according to the time series, whereby a dynamic-only moving image can be easily created. Moreover, in the present embodiment, unlike the seventh embodiment, it is possible to easily create a dynamic movie without changing the shooting frame rate.

(Ninth embodiment)
FIG. 16 is a flowchart showing a processing procedure in the ninth embodiment of the present invention. When a recording start key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a file open process is executed to secure a moving image data storage area in the buffer memory 11 (step SK1). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SK2).

  Next, it is determined whether or not dynamics have been detected by comparing the preceding and following frame images and determining whether or not the difference has occurred (step SK3). If no dynamics are detected, the process proceeds to step SK6 without executing the processes of steps SK4 and SK5. If a dynamic state is detected, it is determined whether or not the detected dynamic state is a new dynamic pattern (step SK4).

  That is, in the case of a new dynamic pattern as described above, a dynamic flag is added to the frame image data in step SK5 to be described later and stored in the storage area of the buffer memory 11. Therefore, the current dynamic state is detected by comparing the frame image in which the current dynamic state is detected with each frame image stored with the dynamic flag added to the storage area of the buffer memory 11 in step SJ4. It is possible to determine whether or not the obtained frame image is a new dynamic pattern. If it is a new dynamic pattern, a dynamic flag is added to the frame image data stored in step SK2 (step SK5).

  Next, it is determined whether or not a certain time (10 minutes) has elapsed (step SK6). If the predetermined time has not elapsed, it is determined whether or not a recording end trigger has occurred (step SK7). If no recording end trigger has occurred, the process returns to step SK2. Therefore, the loop of steps SK2 to SK7 is repeated until a certain time elapses or a recording end trigger is generated, and frame image data is sequentially stored in the buffer memory 11 and dynamics are generated in a new pattern. The frame image data is added with a dynamic flag and stored.

  When a predetermined time (10 minutes) has elapsed since the start of recording, the determination in step SK6 is YES. Therefore, the process proceeds from step SK6 to step SK8 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, the divided file created in step SK8 is recorded in the storage memory 13 (step SK9), and the process returns to step SK1.

  Therefore, the loop of steps SK1 to SK9 is repeatedly executed until the recording end trigger is detected in step SK7, and the oldest divided file is erased and the new divided file is recorded in the storage memory 13. When the recording end trigger is detected, the determination in step SK7 is YES, and the process proceeds from step SK7 to steps SK10 → SK11 → SK12, and the above-described recording stop process, file close process, and through display are executed.

  Therefore, according to the present embodiment, the plurality of files recorded in the storage memory 13 are all for a fixed time (10 minutes). Therefore, when an unexpected event occurs during recording, it is possible to easily search in which file the images before and after the predetermined time are recorded. It is also easy to manage a plurality of files recorded in the storage memory 13 based on time. Therefore, by managing and searching a plurality of files recorded in the storage memory 13 based on time, when the cause of the event is clarified, the file is quickly searched and the cause is clarified at an early stage. It becomes possible.

  Further, in each divided file, a dynamic flag is added to the frame image data recorded when the dynamic of the new pattern is detected. Therefore, by leaving only the frame image data to which the dynamic flag is added from each divided file, and combining them according to the time series, it is possible to easily create a moving image of only a new pattern of dynamics.

(Tenth embodiment)
FIG. 17 is a flowchart showing a processing procedure in the tenth embodiment of the present invention. When a recording start key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a file open process is executed to secure a moving image data storage area in the buffer memory 11 (step SL1). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SL2).

  Next, it is determined whether or not an impact ON signal is input from the impact sensor 15 (step SL3). If the impact ON signal is not input, it is determined whether or not a certain time (10 minutes) has elapsed (step SL4). If the predetermined time has not elapsed, the process returns to step SL2. Therefore, the loop of steps SL <b> 2 to SL <b> 4 is repeated until a shock ON signal is input from the shock sensor 15 or a predetermined time elapses, and frame image data is sequentially stored in the buffer memory 11.

  Then, when a certain time (10 minutes) has elapsed from the start of recording without receiving the impact ON signal, the determination in step SL4 is YES. Therefore, the process proceeds from step SL4 to step SL5 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, the divided file created in step SL5 is recorded in the storage memory 13 (step SL6), and the process returns to step SL1.

  Therefore, the loop of steps SL1 to SL6 is repeatedly executed until the input of the impact ON signal is detected in step SL3, and the storage memory 13 stores the buffer memory in units of a fixed time (10 minutes) as shown in FIG. 11 is transferred to the storage memory 13 and recorded, and the oldest divided file is erased and a new divided file is recorded.

  When an impact ON signal is input from the impact sensor 15 in association with the occurrence of an accident in the vehicle on which the digital camera 1 is mounted, the determination in step SL3 is YES. Therefore, the process advances from step SL3 to steps SL7 → SL8 → SL9, and the above-described recording stop process, close process, and through display are executed.

  Further, the process proceeds from step SL9 to step SL5 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, the divided file created in step SL5 is recorded in the storage memory 13 (step SL6), and the process returns to step SL1.

  At this time, when the process proceeds from step SL4 to step SL5 → SL6, as described above, in step S1 of FIG. 2B, a new file consisting of frame image data for a fixed time (10 minutes) is recorded. It is determined whether or not the area to be obtained remains. However, when the process proceeds from step SL9 to step SL5 → SL6, as shown in FIG. 18, a file consisting only of the frame image data group D from the most recent file open to the file close by impact is recorded.

  Accordingly, when the process proceeds from step SL9 to step SL5 → SL6, in step S1 in FIG. 2B, does the storage memory 13 have an area where a new file composed of the frame image data group D can be recorded? Judge whether or not. If there remains an area where a new file composed of the frame image data group D can be recorded, the new file process is executed to record the new file composed of the frame image data group D in the storage memory 13 ( Step S2). However, if there is no area in the storage memory 13 where a new file consisting of the frame image data group D can be recorded, the determination in step S1 in FIG. Accordingly, in this case, the process proceeds from step S1 to step S3, and the oldest file is deleted from the storage memory 13 and the file formed of the frame image data group D created this time is overwritten.

  Therefore, in the present embodiment, the division file in the steady state is a fixed time unit (10 minute unit), but the divided file immediately before the impact sensor 15 is turned on after the occurrence of the accident is less than the fixed time unit. It becomes a short time and the file recorded in the storage memory 13 lastly. Therefore, when the cause of the accident is clarified, not only the last divided file can be easily retrieved from the storage memory 13 quickly, but also by playing back the last divided file that is shorter in time than a certain time, the earlier It becomes possible to elucidate the cause.

(Eleventh embodiment)
FIG. 19 is a flowchart showing a processing procedure in the eleventh embodiment of the present invention. When a recording start key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a file open process is executed to secure a moving image data storage area in the buffer memory 11 (step SM1). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SM2).

  Next, it is determined whether or not it is after the impact, that is, whether or not it is after the impact ON signal is input from the impact sensor 15 (step SM3). If it is not after the impact, it is determined whether or not an impact ON signal is input from the impact sensor 15 (step SM4). If the impact ON signal is not input, it is determined whether or not a certain time (10 minutes) has elapsed (step SM5). If the predetermined time has not elapsed, the process returns to step SM2. Therefore, the loop of steps SM2 to SM5 is repeated until after the impact, or the impact ON signal is input from the impact sensor 15 or a predetermined time elapses, and the frame image data is sequentially stored in the buffer memory 11. It will be done.

  Then, if a certain time (10 minutes) has elapsed from the start of recording without receiving the impact ON signal, the determination in step SM5 is YES. Accordingly, the process proceeds from step SM5 to step SM6 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, the divided file created in step SM6 is recorded in the storage memory 13 (step SM7), and the process returns to step SM1.

  Accordingly, the loop of steps SM1 to SM7 is repeatedly executed until it is determined in step SM3 that the impact has occurred or until it is determined in step SM4 that there is an impact, and the storage memory 13 has a predetermined time ( The divided file in the buffer memory 11 is transferred to the storage memory 13 and recorded in units of (10 minutes), and a new divided file is recorded while erasing the oldest divided file.

  When an impact ON signal is input from the impact sensor 15 in association with the occurrence of an accident in the vehicle on which the digital camera 1 is mounted, the determination in step SM4 is YES. Therefore, the process proceeds from step SM4 to step SM8.fwdarw.SM9.fwdarw.SM10, and the file creation and recording process described above is executed and one file storage time is changed.

  At this time, if the process proceeds from step SM5 to step SM6 → SM7, as described above, in step S1 in FIG. 2B, a new file consisting of frame image data for a fixed time (10 minutes) is recorded. It is determined whether or not the area to be obtained remains. However, when the process proceeds from step SM4 to step SM8 → SM9, as shown in FIG. 20, a file consisting only of the frame image data group D from the most recent file open to the file close by impact is recorded.

  Therefore, when the process proceeds from step SM4 to step SM8 → SM9, in step S1 in FIG. 2B, does the storage memory 13 have an area where a new file composed of the frame image data group D can be recorded? Judge whether or not. If there remains an area where a new file composed of the frame image data group D can be recorded, the new file process is executed to record the new file composed of the frame image data group D in the storage memory 13 ( Step S2). However, if there is no area in the storage memory 13 where a new file consisting of the frame image data group D can be recorded, the determination in step S1 in FIG. Accordingly, in this case, the process proceeds from step S1 to step S3, and the oldest file is deleted from the storage memory 13 and the file formed of the frame image data group D created this time is overwritten.

  Thereafter, the processing from step SM1 is executed. At this time, since the impact ON signal has already been input from the impact sensor 15 and an impact has occurred, the determination in step SM3 is YES. Accordingly, the process proceeds from step SM3 to step SM14 to determine whether or not a recording end trigger has occurred. If no recording end trigger has occurred, it is determined whether or not a fixed time has elapsed (step SM5). At this time, the fixed time determined in step SM5 is the fixed time changed in step SM10 and is about 1 second. If this fixed time has not elapsed, the process returns to step SM2. Therefore, after the impact, the loop of steps SM2, SM3, SM11, SM5, and SM2 is repeated until a recording end trigger occurs or a certain time (about 1 second) elapses, and the buffer memory 11 sequentially stores frames. Image data is stored.

  Then, when a predetermined time (about 1 second) elapses from the start of recording without generating a recording end trigger, the determination in step SM5 becomes YES. Accordingly, the process proceeds from step SM5 to step SM6 → SM7 to execute file creation and recording processing (step SM7).

  At this time, in the recording process of step SM7, it is determined whether or not there remains an area in the storage memory 13 where a new file in which the frame image data for a certain period of time can be recorded (FIG. 2B ) Step S1). Here, as shown in FIG. 20, the new file is composed of a small frame image data group DS of about 1 second. Accordingly, it is determined whether or not there is an area in the storage memory 13 where a new file composed of the small frame image data group DS can be recorded. If there remains an area where a new file consisting of the small frame image data group DS can be recorded, new file processing is executed to record the new file consisting of the small frame image data group DS in the storage memory 13. (Step S2). If there is no remaining area in the storage memory 13 where a new file consisting of the small frame image data group DS can be recorded, the determination in step S1 in FIG. Therefore, in this case, the process proceeds from step S1 to S3, and the oldest file in the storage memory 13 is deleted and the file composed of the small frame image data group D created this time is overwritten.

  However, since the new file after the occurrence of the impact is composed of the small frame image data group DS of about 1 second as described above, the determination at step SM8 is likely to be YES, and therefore, as shown in FIG. In addition, a file composed of the small frame image data group D created this time can be recorded without deleting the old file.

  Thereafter, the process returns to step SM1. Therefore, after the impact occurs, the loop of steps SM1 to SM3 → SM11 → SM5 to SM7 → SM1 is repeated until a recording end trigger is generated, and the storage memory 13 has a predetermined time (1) as shown in FIG. A divided file consisting of the small frame image data group DS in the buffer memory 11 is transferred to the storage memory 13 and recorded in units of about seconds).

  When the recording end trigger is generated, the process proceeds from step SM11 to step SM12 to execute the recording stop process and the file close process (step SM13) to shift to the through image display state (step SM14).

  Therefore, in the present embodiment, the division file in the steady state is a fixed time unit (10 minute unit), but the divided file immediately before the impact sensor 15 is turned on after the occurrence of the accident is less than the fixed time unit. It becomes a short unspecified time. A file having an unspecified time length can be easily searched, and a file in which a video at the time of an accident is recorded can be quickly searched.

  In addition, after the occurrence of an impact due to an accident, since the frame image data is recorded in divided files each having a recording time of about 1 second, these divided files can be easily searched. In addition, these divided files with a recording time of about 1 second are recorded with the process up to the end of the anomaly caused by the impact being subdivided, so each file can be played back and examined in detail. This makes it possible to easily elucidate the process up to abnormal termination.

(Twelfth embodiment)
FIG. 21 is a flowchart showing a processing procedure in the twelfth embodiment of the present invention. When a recording start key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a file open process is executed to secure a moving image data storage area in the buffer memory 11 (step SN1). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SN2).

  Next, it is determined whether or not there has been an operation input of the important information key at the key input unit 7 by the user (step SN3). If there is an operation input of the important information key, the important information flag is turned on (step S3). SN4). Further, it is determined whether or not a recording end trigger has occurred (step SN5). If the recording end trigger has not occurred, it is determined whether or not a certain time (10 minutes) has elapsed (step SN6), and if the certain time has not elapsed, the process returns to step SN2. Therefore, the loop of steps SN 2 → SN 3 → SN 4 → SN 5 → SN 6 → SN 2 is repeated until a recording end trigger occurs or a predetermined time elapses, and frame image data is sequentially stored in the buffer memory 11.

  When a certain time (10 minutes) has elapsed since the start of recording, the determination in step SN6 is YES. Accordingly, the process proceeds from step SN6 to step SN7 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, and the divided file created in step SN7 is recorded in the storage memory 13 (step SN8).

  Next, it is determined whether or not the important information flag is ON (step SN9). If it is ON, the important information flag is added to the divided file recorded in the storage memory 13 in step SN8. (Step SN10). Subsequently, the important information flag is turned OFF (step SN11), and the process returns to step SN1.

  Therefore, the loop of steps SN1 to SN11 → step SN1 is repeatedly executed until the recording end trigger is detected in step SN3, and the new divided file is recorded in the storage memory 13 while the oldest divided file is deleted. If the important information flag is ON, the divided file to which the important information flag is added is recorded.

  When the recording end trigger is detected, the determination in step SN5 is YES, and the process proceeds from step SN5 to step SN12. In this step SN12, the same recording stop process as described above is executed, the drive of the CCD 2 at the recording frame rate of 30 fps is stopped, and the through image display frame rate having a lower frame rate is switched to this. Further, a file close process is executed to prohibit writing of frame image data to the buffer memory 11 (step SN13).

  Subsequently, a head file open process is executed to select a head file from the plurality of divided files stored in the storage memory 13 and open it in the buffer memory 11 (step SN14). The first file and the like will be described in detail in FIG. Then, it is determined whether or not an important information flag is added to the opened file (step SN15). If the important information flag is not added, the file is deleted from the storage memory 13 (step SN16). If the important information flag is added, the file opened in the buffer memory 11 is closed without deleting the file from the storage memory 13 (step SN17).

  Next, it is determined whether or not the above processing has been executed up to the final file of the divided file recorded in the storage memory 13 (step SN18). If the processing has not been performed up to the final file, the next divided file is opened. (Step SN19), the processing from step SN15 is repeated. If the determination at step SN18 is YES by executing the process up to the final file, the through image is displayed and the process according to this flow is terminated (step SN20).

  Therefore, according to the present embodiment, only the important information file can remain in the storage memory 13, and the non-important information file can be deleted to secure a free area in the storage memory 13.

(Thirteenth embodiment)
22 to 24 are flowcharts showing the thirteenth embodiment of the invention. When a recording start key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in the flowchart of FIG. 22 according to the program. That is, a file open process is executed to secure a moving image data storage area in the buffer memory 11 (step SO1). Subsequently, the recording process is executed, and the frame image data obtained at the frame rate is stored in the storage area secured in the buffer memory 11 (step SO2).

  Next, it is determined whether or not a certain time (10 minutes) has elapsed (step SO3). If the fixed time has not elapsed, it is determined whether or not a recording end trigger has occurred (step SO4). If no recording end trigger has occurred, the process returns to step SO2. Therefore, the loop of steps SO 2 → SO 3 → SO 4 → SO 2 is repeated until a recording end trigger occurs or a predetermined time elapses, and the frame image data is sequentially stored in the buffer memory 11.

  When a certain time (10 minutes) has elapsed since the start of recording, the determination in step SO3 is YES. Accordingly, the process proceeds from step SO3 to step SO5 to execute the file creation process described above. Subsequently, the recording process described with reference to FIG. 2B is executed, the divided file created in step SIO5 is recorded in the storage memory 13 (step SO6), and the process returns to step SO1. Therefore, the loop of steps SO1 to SO6 is repeatedly executed until the recording end trigger is detected in step SO4, and the new divided file is recorded in the storage memory 13 while erasing the oldest divided file.

  When the recording end trigger is detected, the determination in step SO4 is YES, and the process proceeds from step SO4 to step SO7. In this step SO7, the same recording stop process as described above is executed, the drive of the CCD 2 at the recording frame rate of 30 fps is stopped, and the through image display frame rate having a lower frame rate is switched to this. Also, a file close process is executed to prohibit writing of frame image data to the buffer memory 11 (step SO8).

  Further, after executing the combined moving image file creation process described later (step SO9), it is determined whether or not “leave the divided file” is selected in advance by the user's operation on the key input unit 7 (step SO10). . If “leave split file” is not selected, all the split files recorded in the storage memory 13 are deleted (step SO11). If “leave the divided file” is selected, the through image display is started without performing the process of step SO11 (step SO12).

  Therefore, even when a combined file is created as will be described later, the divided file can remain and the user can select whether or not the divided file remains.

  FIG. 23 is a flowchart showing details of the combined moving image file creation processing in step SO12. First, a combined moving image file open process is executed to form a combined file Z (see FIG. 24) in the combined file memory 16 (step SP1). Next, the first divided moving image file open process is executed, and the first file is selected from a plurality of divided files stored in the storage memory 13 and developed in the buffer memory 11 (step SP2). Further, the divided moving image data is extracted from the expanded divided file (step SP3). In the process of step SP3, as shown in FIG. 24, the divided video data a for the first two minutes is extracted from the divided file A in units of 10 minutes.

  Next, the extracted divided moving image data a is written in the combined file Z in the combined file memory 16 formed in step SP1 in the combined file memory 16 (step SP4). Thereafter, the divided moving image file closing process is executed to delete the divided files developed in the buffer memory 11. Further, it is determined whether or not the processing of steps SP3 to SP5 has been executed up to the final file of the divided files recorded in the storage memory 13 (step SP6).

  If the process up to the final file has not been completed, the next divided moving image file open process is executed, the next divided file is read from the storage memory 13 and expanded in the buffer memory 11 (step SP7), and the final file is read. The processing from step SP3 is repeated until Therefore, by repeating the processing from step SP3 until the final file is reached, the first two minutes of the divided moving image data a to f are extracted from the divided files A to F in units of 10 minutes as shown in FIG. Then, the combined files are recorded in the combined file Z combined in time series. When the processing up to the final file is completed, the process proceeds from step SP6 to step SP8, the combined moving image file closing process is executed, and writing to the combined moving image file Z is prohibited.

  Therefore, according to the present embodiment, it is possible to create a moving image file in which only moving image data for a predetermined time is extracted from each divided file in units of a predetermined time and combined. Therefore, in the case of the example of FIG. 24, a digest video file of 12 minutes can be created from a video file of 60 minutes, and by reproducing this, a long time (60 minutes) can be recorded in a short time (12 minutes). The contents can be grasped.

  In the present embodiment, 2 minutes of moving image data is extracted from each divided file. However, the time for extraction is not limited to this, and even if it is shorter than this, it takes a long time. There may be. Moreover, the time slot | zone to extract is not restricted from the beginning, For example, it may be any time slot | zones, such as 2 minutes for 5-7 in 10 minutes. Further, a combined moving image file may be generated by combining all the divided files without performing extraction.

  Further, as described with reference to FIG. 5D, the frame image data is evenly thinned and deleted at a ratio of 80%, for example, from each divided file using the thinning technique, and the frame image data at a ratio of 20% is deleted. The frame image data for 20% remaining in each of the divided files may be combined to generate a combined moving image file.

  In addition, in this way, when extracting a specific part from divided files and combining them in time series to generate a combined file, or combining divided files in time series without extracting them, or playback described later For example, when playing back the divided files in time series, it is necessary to record each divided file in the storage memory 13 so that the temporal relationship becomes clear. Therefore, when the divided file is recorded in the storage memory 13, it is preferable to perform the recording as shown in FIG.

  That is, in FIG. 25A, “previous data” and “following data” are recorded for each divided file. Data indicating the recorded divided file immediately before the divided file is recorded in “previous data”, and data indicating the divided file recorded immediately after the divided file is recorded in “following data”. As shown in the figure, the “preceding data” of the first file and the “following data” of the last file are NULL. If recording is performed in this way, even if a new file is overwritten and an old file is deleted, the time series of the divided files remaining in the storage memory 13 can be grasped finally.

  In the case of FIG. 25B, serial file names are sequentially added to new divided files. Even in this case, when the new file is overwritten and the old file is deleted, the time series of the divided files remaining in the storage memory 13 can be grasped finally.

  Of course, the method of clarifying the time series of the divided files remaining in the storage memory 13 is not limited to these, and other methods such as writing the recording start time in each divided file as shown in FIG. A technique may be used.

(Fourteenth embodiment)
FIG. 26A is a flowchart showing a processing procedure in the fourteenth embodiment of the present invention. When an erase key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a head file open process is executed to select a head file from a plurality of divided files stored in the storage memory 13 and open it in the buffer memory 11 (step SQ1). Next, it is determined whether or not an important flag is included in the opened file (step SQ2).

  Here, the important flag is the protect flag used in the second embodiment, the dynamic flag used in the eighth and ninth embodiments, the important information flag used in the twelfth embodiment, etc. A generic term for flags added when recording a split file.

  If the important flag is not added to the opened file, a file closing process is performed to delete the divided file from the buffer memory 11 (step SQ3), and the file is deleted from the storage memory 13 (step SQ3). SQ4). If the important information flag is added, the file opened by executing the file close process is deleted from the buffer memory 11 without deleting the file (step SQ5).

  Next, it is determined whether or not the above processing has been executed up to the final file of the divided file recorded in the storage memory 13 (step SQ6). If the processing has not been performed up to the final file, the next divided file is opened. (Step SQ7), the processing from step SQ2 is repeated. If the determination in step SQ6 is YES by executing the process up to the final file, the process according to this flow is terminated.

  Therefore, according to the present embodiment, only the important file can remain in the storage memory 13, and the non-important file can be deleted to secure a free area in the storage memory 13.

  In the case of the twelfth embodiment described above, at the end of recording in the storage memory 13, the same processing as the above processing is performed. However, as in the present embodiment, the key input unit 7 has If this erasure process is performed on the condition that the provided erasure key is operated, it is possible to prevent inconvenience that the divided file is erased even though it is not intended by the user.

  In this embodiment, the erasure process is executed on the condition that the erasure key provided in the key input unit 7 is operated. However, the interrupt routine shown in FIG. Thus, the erasing process may be executed periodically. That is, it is determined whether or not it is the erasing timing based on whether or not a predetermined time has elapsed since the previous erasing process according to this flow (step SX1). If the predetermined time has elapsed from the previous erasing process and the erasing timing is reached, the oldest file in the storage memory 13 is protected and its erasure is prohibited (step SX2), and other files are erased (step SX3). ).

  Thereby, for example, the oldest file at that time is protected and remains in the storage memory 13 every 60 minutes. As a result, in the storage memory 13 having a limited capacity, it is possible to form a free area for recording a new file by erasing while intermittently leaving past files.

  In step SX2, the oldest entire file is protected. However, only the first two minutes of the file are protected, and other parts and other files are deleted. Also good. As a result, more free space for recording a new file can be formed.

(Fifteenth embodiment)
27 to 29 are views showing a fifteenth embodiment of the present invention. In the storage memory 13 according to the present embodiment, each divided file is recorded in chronological order as shown in FIG. 5A, and when each divided file is recorded in time series as shown in FIG. In some cases, the recording start time information is recorded for each divided file. In addition, the shooting frame rates of the divided files are all the same.

  FIG. 28A is a flowchart showing the main routine of the present embodiment. When a reproduction key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a head file open process is executed, and a head file is selected from a plurality of divided files stored in the storage memory 13 based on the time information and opened in the buffer memory 11 (step SR1). A frame is read from the divided file opened in the buffer memory 11 (step SR2) and encoded (step SR3).

  Also, it is determined whether or not the frame subjected to the encoding process is a “final frame-n” frame, that is, whether or not the reproduction of the divided file is just before the end (step SR4). If it is not immediately before the end, it is determined whether or not the reproduction of all frames in the divided file has been completed (step SR5). If the reproduction of all frames has not been completed, the process returns to step SR2. Therefore, the loop of steps SR2 to SR5 is repeated until the reproduction of the divided file is just before the end, and the frames of the divided file are sequentially encoded.

  When the encoded frame becomes the “final frame-n” frame and the reproduction of the divided file is immediately before the end of the reproduction, the process proceeds from step SR4 to step SR6 to save the next file of the currently encoded divided file. Search is performed in the memory 13 (step SR6). Of course, this search is also performed based on the time information. Next, based on the search result, it is determined whether or not the next file exists in the storage memory 13 (step SR7). If there is no next file, the process returns to step SR2 without performing the process of step SR8. . If there is a next file, a file open process is executed to expand the next file in the buffer memory 11 in advance (step SR8), and then the process returns to step SR2.

  When the loop of steps SR2 to SR5 is repeatedly executed, the determination at step SR5 becomes YES, and when all the frames of the divided file being encoded have been encoded, the process proceeds from step SR5 to step SR9. Perform close processing. By this file closing process, the divided file that has been encoded is deleted from the buffer memory 11. Subsequently, it is determined whether or not there is a next file in the storage memory 13 (step SR10). At this time, if there is a next file, the process of step SR8 has already been executed, and the next file is expanded in the buffer memory 11. Therefore, if the determination in step SR10 is YES and there is a next file, the process returns to step SR2 to start frame reading from the next file already developed in the buffer memory 11.

  In this way, when the divided files in the storage memory 13 are encoded in chronological order and the encoding process of the final divided file is completed, the determination in step SR5 is YES, and the process proceeds from step SR5 to SR9 to SR10. Further, since the determination in step SR10 is NO, the reproduction is terminated.

  On the other hand, for this main routine, the interrupt routine shown in FIG. 28 (B) is executed by interrupting each timing corresponding to the same playback frame rate as the shooting frame rate of the divided file. That is, it is determined whether there is image data encoded by the encoding process (step SR3) (step SS1). If there is encoded frame image data, the frame image data encoded on the display device 6 is determined. Is output (step SS2). If there is no encoded frame image data, it is determined whether or not the reproduction has ended in the main routine (step SS3), and the loop of steps SS1 to SS3 is repeated until the reproduction ends.

  Therefore, by executing the processing according to the flowcharts of FIGS. 28A and 28B described above, a plurality of divided files recorded in the storage memory 13 at the same shooting frame rate are shown in FIG. As shown in FIG. 29, when the time series is recorded, the files 1, 2, 3,... Recorded in the storage memory 13 are reproduced frames having the same shooting frame rate. It is possible to continuously reproduce at a rate in chronological order and display on the display device 6.

(Sixteenth embodiment)
FIG. 30A is a flowchart showing a main routine in the sixteenth embodiment of the present invention. When a reproduction key provided in the key input unit 7 is operated, the DSP / CPU 3 executes processing as shown in this flowchart according to the program. That is, a predetermined reference frame rate is set regardless of the shooting frame rate of each divided file recorded in the storage memory 13 (step ST1). Next, frame rate cycle processing is started, and an interrupt at a timing corresponding to the reference frame rate of an interrupt routine shown in FIG.

  Subsequently, a head file open process is executed to select a head file from the plurality of divided files stored in the storage memory 13 and open it in the buffer memory 11 (step ST3). A frame is read from the divided file opened in the buffer memory 11 (step ST4) and encoded (step ST5). It is determined whether or not the frame subjected to the encoding process is a “final frame-n” frame, that is, whether or not the reproduction of the divided file is immediately before the end (step ST6). If it is not immediately before the end, it is determined whether or not the reproduction of all frames in the divided file has been completed (step ST7). If the reproduction of all frames has not been completed, the process returns to step ST4. Therefore, the loop of steps ST4 to ST7 is repeated until the reproduction of the divided file is just before the end, and the frames of the divided file are sequentially encoded.

  When the encoded frame becomes the “final frame-n” frame and the reproduction of the divided file is just before the end, the process proceeds from step ST6 to step ST8, and the next file of the currently encoded divided file is saved. Search is performed in the memory 13 (step ST8). Next, based on the search result, it is determined whether or not the next file exists in the storage memory 13 (step ST9). If there is no next file, the process returns to step ST4 without performing the process of step ST10. . If there is a next file, a file open process is executed to expand the next file in the buffer memory 11 in advance (step ST10), and then the process returns to step ST2.

  When the loop of steps ST4 to ST7 is repeatedly executed, the determination in step ST7 is YES, and if all the divided file frames currently being encoded have been encoded, the process proceeds from step ST7 to step ST11. Perform close processing. By this file closing process, the divided file that has been encoded is deleted from the buffer memory 11. Subsequently, it is determined whether or not there is a next file in the storage memory 13 (step ST10). At this time, if there is a next file, the processing of step ST10 has already been executed, and the next file is expanded in the buffer memory 11. Therefore, if the determination in step ST12 is YES and there is a next file, the process returns to step ST4 to start frame reading from the next file already developed in the buffer memory 11.

  In this way, when the divided files in the storage memory 13 are encoded in chronological order and the encoding process of the final divided file is completed, the determination in step ST7 is YES, and the process proceeds from step ST7 to ST11 to ST12. Further, since the determination in step ST12 is NO, the process proceeds from step ST12 to step ST13. In step ST13, the frame rate cycle process is stopped.

  On the other hand, for this main routine, the interrupt routine shown in FIG. 30B is executed by interrupting at the timing corresponding to the reference frame rate. That is, it is determined whether there is image data encoded by the encoding process (step ST5) (step SU1). If there is encoded frame image data, the frame image data encoded on the display device 6 is determined. Is output (step SU2). If there is no encoded frame image data, it is determined whether or not there has been a frame period stop process by the process of step ST13 (step SU3), and a loop of steps SU1 to SU3 is performed until there is a frame period stop process. repeat.

  Here, as shown in FIG. 31A, for example, the divided files 1, 2, 3,... Are recorded in the storage memory 13 at different shooting frame rates x (fps), y (fps), z (fps). If the divided files 1, 2, 3,... Are reproduced at the same frame rate (x, y, z) as the reproduction frame rate, the divided files 1, 2, 3,. Will be played in the same way as normal video playback.

  However, when the divided files 1, 2, 3,... Are recorded in the storage memory 13 at different shooting frame rates x (fps), y (fps), z (fps), as in the present embodiment. If playback is performed at a predetermined reference frame rate a (fps), all the divided files 1, 2, 3,... Are played back at the same frame rate a as shown in FIG.

  Therefore, for example, when the frame rate y is equal to the reference frame rate a, the frame rate x is higher than the reference frame rate a, and the frame rate z is lower than the reference frame rate a, that is, x> y = a> z. In FIG. 31B, file 1 is played back slowly, file 2 is played back normally, and file 3 is played back quickly. Therefore, files recorded at a frame rate higher than the reference frame rate a and moving image data of a part of the file can be automatically slow-played and displayed.

(Seventeenth embodiment)
FIG. 32A is a flowchart showing a main routine in the seventeenth embodiment of the present invention. In this flowchart, steps SV1 to SV5 and steps SV7 to SV14 excluding step SV6 are the same as steps ST1 to ST13 in the flowchart shown in FIG. 30A in the sixteenth embodiment described above. Then, in the only different step SV6, a frame rate change flag is set in accordance with a reproduction frame rate change operation by the user at the key input unit 7. Note that the playback frame rate set by the operation of the key input unit 7 is stored in the buffer memory 11.

  On the other hand, the interrupt routine shown in FIG. 30B is interrupted and executed for this main routine. That is, it is determined whether there is image data encoded by the encoding process (step SV5) (step SW1). If there is encoded frame image data, an output timing changing process using a flag is executed (step SW2). That is, when the frame rate change flag is not set, the output timing is controlled to be the timing corresponding to the reference frame rate. When the frame rate change flag is set, the output timing is controlled so that the timing corresponds to the changed frame rate stored in the buffer memory 11 as described above.

  Then, the encoded frame image data is output to the display device 6 at the timing controlled in the step SW2 in the next step SW3 (step SW3). If there is no encoded frame image data, it is determined whether or not the frame rate cycle processing stop in step SV14 of the main routine has been executed (step SW4), and step SW1 is performed until the frame rate cycle processing is stopped. Repeat the process of ~ SW4.

  Therefore, as shown in FIG. 33A, for example, the divided files 1, 2, 3,... Are recorded in the storage memory 13 at different shooting frame rates x (fps), y (fps), z (fps). If these split files 1, 2, 3,... Are played back at the same frame rate as the playback frame rate, each split file 1, 2, 3,. Will be.

  However, when the divided files 1, 2, 3,... Are recorded in the storage memory 13 at different shooting frame rates x (fps), y (fps), z (fps), as in the present embodiment. In addition, if the frame rate is changed to a (fps) when the divided file 2 is reproduced, the divided file 1 is reproduced at the frame rate a (fps) as shown in FIG. Therefore, regardless of the frame rate at which each divided file is recorded, it can be played back at the frame rate desired by the user.

1 Digital camera 2 CCD
3 DSP / CPU
4 TG
5 Unit Circuit 6 Display Device 7 Key Input Unit 10 Data Bus 11 Buffer Memory 12 ROM
13 Saved memory

The present invention relates to an image recording apparatus for recording moving picture, it relates to an image recording control program and an image storage how used in the image recording apparatus.

The present invention has been made in view of such conventional problems, an image recording apparatus for recording moving picture to be able to manage the multiple files time, to provide an image recording control program and an image storage how It is for the purpose.

Wherein is a problem in the image recording apparatus according to the invention of claim 1, wherein in order to resolve an imaging means for sequentially imaging a storage unit, an acquisition unit acquire the sequentially captured images by the imaging means, For each group of images acquired by the acquisition unit in a fixed time unit, a file generation unit that generates a file in synchronization with the acquisition unit and the file generated by the file generation unit are stored in the storage unit Storage control means , dynamic detection means for detecting dynamics based on an image captured by the imaging means, and imaging control means for changing imaging conditions of the imaging means when dynamics are detected by the dynamic detection means; The file generating means generates the next file from the time when the dynamic state is detected by the dynamic state detecting means .

Further, in the image recording apparatus according to the second aspect of the present invention, the imaging control unit is configured to perform imaging with a higher bit rate or image size than usual when the dynamics are detected by the dynamic detection unit. The imaging is performed under conditions.

In the image recording apparatus according to the third aspect of the present invention, a file in which dynamics are recorded from a plurality of files stored in the storage means is divided into the time unit and each recording time of the plurality of files. Searching means for searching based on this is provided.

Further, in the image recording apparatus according to the invention of claim 4, the dynamic detection means includes a dynamic storage means for storing the first detected dynamic, a dynamic stored in the dynamic storage means, and thereafter Comparing means for comparing the detected dynamics, and a determining means for determining whether the dynamics are detected when the two dynamics are different based on the comparison result of the comparing means.

Further, in the image recording apparatus according to the invention of claim 5, the dynamic detection means includes a dynamic storage means for sequentially storing the detected dynamics, a plurality of dynamics sequentially stored in the dynamic storage means, Comparing means for comparing kinetics detected after that, and determination means for determining what detected the kinetics when the plurality of kinetics are different from the detected kinetics based on the comparison result of the comparing means. It is characterized by.

Further, in the image recording control program according to the sixth aspect of the present invention, taken with an imaging means for sequentially imaging, a computer image recording apparatus has and a storage unit, the sequentially captured images by the imaging means An acquisition unit to obtain, a file generation unit for generating a file in synchronization with the acquisition unit for each group of images obtained by the acquisition unit, and the file generated by the file generation unit. Storage control means for storing in the storage means , dynamic detection means for detecting dynamics based on an image captured by the imaging means, and changing imaging conditions of the imaging means when dynamics are detected by the dynamic detection means And the file generation means obtains the next file from the time when the movement is detected by the movement detection means. Characterized in that it formed.

The image recording method according to the invention of claim 7 is an image recording method in an image recording apparatus comprising an imaging means for sequentially imaging and a storage means, wherein the images are sequentially captured by the imaging means. an acquisition step get the, for each image group of a certain time unit acquired by the acquiring step, and a file generating step of generating a file in synchronization with the acquisition means, the file generated by the file generation step Is stored in the storage means, a dynamic detection step for detecting dynamics based on an image captured by the imaging means, and an imaging condition of the imaging means when dynamics are detected by the dynamic detection step An imaging control step of changing the file, and the file generation step detects the dynamics by the dynamic detection step. And generating the following files from the time it is.

Therefore, according to the present embodiment, the plurality of files recorded in the storage memory 13 are all for a fixed time (10 minutes). Therefore, when an unexpected event occurs during recording, it is possible to easily search in which file the images before and after the predetermined time are recorded. Further, it is also easy to manage on the basis of a plurality of files recorded in the storage memory 1 3 times. Therefore, by managing and searching a plurality of files recorded in the storage memory 13 based on time, when the cause of the event is clarified, the file is quickly searched and the cause is clarified at an early stage. It becomes possible.

Thereafter, the processing from step SM1 is executed. At this time, since the impact ON signal has already been input from the impact sensor 15 and an impact has occurred, the determination in step SM3 is YES. Accordingly, the process proceeds from step SM3 to step SM14 to determine whether or not a recording end trigger has occurred. The recording end trigger is the to have a have field coupling occurs, it is determined whether a predetermined time has elapsed (step SM5). At this time, the fixed time determined in step SM5 is the fixed time changed in step SM10 and is about 1 second. If this fixed time has not elapsed, the process returns to step SM2. Therefore, after the impact, the loop of steps SM2, SM3, SM11, SM5, and SM2 is repeated until a recording end trigger occurs or a certain time (about 1 second) elapses, and the buffer memory 11 sequentially stores frames. Image data is stored.

On the other hand, the interrupt routine shown in FIG. 32B is interrupted and executed for this main routine. That is, it is determined whether there is image data encoded by the encoding process (step SV5) (step SW1). If there is encoded frame image data, an output timing changing process using a flag is executed (step SW2). That is, when the frame rate change flag is not set, the output timing is controlled to be the timing corresponding to the reference frame rate. Moreover, when said frame rate change flag is set, it controls the output timing so that the timing corresponding to the frame rate has been changed is stored in the buffer memory 11 as described above.

Claims (31)

Imaging means for sequentially imaging;
Storage means;
Acquisition means for acquiring images sequentially taken by the imaging means in a fixed time unit;
File generation means for generating a file for each image group in units of time acquired by the acquisition means;
An image recording apparatus comprising: a storage control unit that stores the file generated by the file generation unit in the storage unit. The storage control means
Determining means for determining whether or not a free space necessary for storing the file generated by the file generating means remains in the storage means;
A first storage control unit configured to sequentially store the files generated by the file generation unit in the storage unit when it is determined by the determination unit that the free space exists;
A second storage for storing a new file generated by the file generation means instead of the oldest file stored in the storage means when the determination means determines that the free space does not exist; The image recording apparatus according to claim 1, further comprising a control unit. The storage control means
Determining means for determining whether or not a free space necessary for storing the file generated by the file generating means remains in the storage means;
A first storage control unit configured to sequentially store the files generated by the file generation unit in the storage unit when it is determined by the determination unit that the free space exists;
When it is determined by the determination means that the free space does not exist,
A combined file generating unit that thins out the frame images in each file stored in the storage unit and combines the frame images remaining by the thinning out to generate a combined file;
2. The image recording apparatus according to claim 1, further comprising: a second storage control unit that deletes the file from the storage unit to form a free space in the storage unit and stores the combined file. The combined file generation means includes:
4. The image recording apparatus according to claim 3, wherein the frame image is thinned out at a predetermined ratio from the whole of each file stored in the storage means. The combined file generation means includes:
4. The image recording apparatus according to claim 3, wherein in each file stored in the storage means, a frame image from the start of storage to a predetermined time is left and another frame image is thinned out.   3. The image according to claim 1, further comprising an erasing unit that collectively erases information stored in the storage unit before the storage control unit starts storing the file in the storage unit. Recording device.   Prior to the start of storage of the file in the storage unit by the storage control unit, the storage control unit includes an erasing unit that deletes other files excluding a predesignated file stored in the storage unit. Item 3. The image recording apparatus according to Item 1 or 2. The first and second storage control means attach an identifier to the file based on a predetermined condition and store the identifier in the storage means,
3. The image recording apparatus according to claim 2, wherein the second storage control unit stores the new file instead of the oldest file other than the file to which the identifier is attached.   The image recording apparatus according to claim 1, further comprising an imaging cycle control unit that variably controls an imaging cycle of the imaging unit.   Provided with a free capacity forming means for performing a protection process for prohibiting erasure of the oldest file in the storage means at a predetermined time interval, and erasing other files other than the protected file to form a free capacity. The image recording apparatus according to claim 1, wherein the image recording apparatus is an image recording apparatus.   The image recording apparatus according to claim 10, wherein the free capacity forming unit performs the protection process on a part of the oldest file. Comprising a dynamic detection means for detecting dynamics based on an image captured by the imaging means;
The image recording apparatus according to claim 1, wherein the acquisition unit acquires an image captured by the imaging unit when a dynamic state is detected by the dynamic detection unit. A circulation storage means for sequentially circulating and storing images picked up by the image pickup means;
The acquisition means acquires the immediately preceding image from the circulating storage means and acquires the image after the dynamics are detected from the imaging means when dynamics are detected by the dynamic detection means. The image recording apparatus according to claim 12, wherein the apparatus is an image recording apparatus. Comprising a dynamic detection means for detecting dynamics based on an image captured by the imaging means;
3. The file generation unit according to claim 1, wherein when the dynamic state is detected by the dynamic state detection unit, the generation of the file is terminated without depending on the time unit, and the next file is generated. Image recording device.   15. The image recording apparatus according to claim 14, wherein the image pickup means picks up an image with a bit rate or an image size higher than normal when a movement is detected by the movement detection means. Dynamic detection means for detecting dynamics based on an image captured by the imaging means;
The image recording apparatus according to claim 1, further comprising an adding unit that detects a dynamic state of the images sequentially picked up by the imaging unit and adds an identifier to the image. The dynamic detection means includes
Dynamic storage means for storing the first detected dynamic,
A comparison means for comparing the dynamics stored in the dynamic storage means with the dynamics detected thereafter;
The image recording apparatus according to any one of claims 11 to 16, further comprising a determination unit configured to determine whether a dynamic state is detected based on a comparison result of the comparison unit when the two dynamic states are different. The dynamic detection means includes
Dynamic storage means for sequentially storing detected dynamics;
Comparison means for comparing a plurality of kinetics sequentially stored in the kinetic storage means with the kinetics detected thereafter,
The determination unit according to any one of claims 11 to 16, further comprising: a determination unit that determines a detection of a dynamic when the plurality of dynamics and a detected dynamic are different based on a comparison result of the comparison unit. Image recording device. Equipped with an impact detection means for detecting an impact,
In the case where the impact detection means detects an impact, the acquisition means stops acquiring an image from the imaging means in response thereto,
The image recording apparatus according to claim 1, wherein the file generation unit generates a file based on images up to a point of time acquired by the acquisition unit.   The image recording apparatus according to claim 19, wherein the impact detection means is an impact sensor in an airbag system mounted on a vehicle. Equipped with an impact detection means for detecting an impact,
In the case where the impact detection means detects an impact, the acquisition means ends the generation of the file without depending on the time unit in response thereto, and after the impact detection means detects the impact, 3. The image recording apparatus according to claim 1, wherein the image is acquired in a unit of time shorter than a predetermined unit of time. A combined file generating unit configured to combine a plurality of files stored in the storage unit to generate a single file;
3. The image recording apparatus according to claim 1, further comprising a third storage control unit that stores the single file generated by the combined file generation unit in the storage unit or another storage unit. . The combined file generating means includes an extracting means for extracting an image for a predetermined time from each of the plurality of files stored in the storage means,
23. The image recording apparatus according to claim 22, wherein the single file is generated by combining the images for a predetermined time extracted from the files by the extracting unit. A selection means for selecting whether or not to delete a plurality of files stored in the storage means after the single file is generated by the combined file generation means;
24. The image recording apparatus according to claim 22, further comprising an erasing unit that erases a plurality of files stored in the storage unit in accordance with a selection result of the selection unit.   23. The image recording apparatus according to claim 22, wherein the combined file generating unit combines the plurality of files by reducing a bit rate of other files excluding a file designated in advance.   The image recording apparatus according to any one of claims 1 to 25, further comprising a reproducing unit that reads and reproduces a plurality of files stored in the storage unit in chronological order.   27. The image recording apparatus according to claim 26, wherein the reproduction unit reproduces each file at a reproduction frame rate corresponding to a frame rate at the time of storing each file stored in the storage unit.   27. The image recording apparatus according to claim 26, wherein the reproduction unit reproduces each file at a constant frame rate regardless of a frame rate at the time of recording each file stored in the storage unit. A computer included in an image recording apparatus that includes an imaging unit that sequentially captures images and a storage unit,
Acquisition means for acquiring images sequentially taken by the imaging means in a fixed time unit;
File generation means for generating a file for each image group in units of time acquired by the acquisition means;
An image recording control program that functions as a storage control unit that stores the file generated by the file generation unit in the storage unit. An image recording method in an image recording apparatus comprising imaging means for sequentially imaging and storage means,
An acquisition step of acquiring the images sequentially captured by the imaging means in a certain time unit;
A file generation step for generating a file for each image group of the time unit acquired by the acquisition step;
A storage control step of storing the file generated by the file generation step in the storage means. Reading means for reading out the files in order from the oldest, from the storage means storing the files for each group of images taken in a fixed time unit sequentially,
An image reproduction apparatus comprising: reproduction means for reproducing the file read by the reading means.

Images