JP2009095047A - Recording and reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording and reproducing device by which confirmation of recording is promptly performed, the head of a video cut and one video scene comprised of a plurality of video cuts are also promptly reviewed. <P>SOLUTION: The recording and reproducing device has: an input means for inputting moving image signals; a first recording means to which random access is possible, for recording the image signals inputted from the input means; a second recording means for recording the recording starting position information and recording end position information of the moving image signals in the first recording means; a list display means for displaying the moving image signals recorded in the first recording means by list on a display means; a selection means for selecting at least one of the moving image signals displayed by list; and a review reproducing means for reproducing, for prescribed time, part based on the recording starting position information or part based on the recording end position information of the moving image signal selected by the selection means on the display means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic camera that is a recording / playback apparatus, and more particularly to a digital movie camera that digitally records a moving image.

  Conventionally, a magnetic tape is used as a recording medium in a movie camera for recording a moving image. In the case of such a recording / playback device, the user confirms by rewinding and playing back the tape recording for several seconds from the end of the video cut taken immediately before the recording end point as a means for checking the recording mistake at the time of recording. A review function is provided.

  However, the part you want to review is not necessarily the last video cut recorded immediately before, and you can check the video immediately after the start of shooting in order to check whether the photographer has recorded as intended in advance. In order to do this, it is necessary to be able to review from the beginning of the video cut. However, when reviewing from the beginning of the video cut, the operation is extremely difficult because the characteristics of the magnetic tape that is the recording medium are used to search for a break between the video cuts that are the beginning of the video cut while performing the tape rewinding operation. There is a problem that it is difficult to conduct a high-speed review.

  Further, when reviewing the entire video scene over several cuts, it is necessary to search for the head portion of the video scene while rewinding the head portion of the video scene as described above. For this reason, there is a problem that the user is required to perform complicated operations and skill.

  The present invention solves the problems of the conventional movie camera using the magnetic tape as described above, can quickly confirm the recording, and can quickly review both the top of the video cut and one video scene composed of a plurality of video cuts. A recording / playback apparatus is provided.

  In order to solve the above problems, the present invention provides a video recording / playback apparatus in which an input means for inputting a moving image signal and a random access for recording a moving image signal input from the input means are possible. First recording means, second recording means for recording the recording start position information and recording end position information of the moving image signal in the first recording means, and a list of moving image signals recorded in the first recording means on the display means A list display means for displaying, a selection means for selecting at least one moving image signal displayed as a list, and a portion based on recording start position information or a portion based on recording end position information of the moving image signal selected by the selection means. The display means has review reproduction means for reproducing for a predetermined time.

  Further, the invention of claim 2 is the recording / reproducing apparatus according to claim 1, wherein the review reproducing means records the moving image signal at a recording end position from a position retroactive to the recording start position for a predetermined time or from the recording end position. It is characterized by playing up to.

  According to a third aspect of the present invention, in the video recording / playback apparatus according to the first aspect, the review / playback unit, when there are a plurality of moving image signals selected by the selecting unit, extracts a part of the selected plurality of moving image signals. The reproduction is performed for a predetermined time according to the selected order.

  According to the present invention, it is possible to easily perform review reproduction of a moving image signal arbitrarily selected from moving image signals recorded in the first recording means.

  A first embodiment of the present invention will be described with reference to FIGS. 1, 2, 3, 4 and 5. FIG.

  FIG. 1 is an external view of a recording / playback apparatus according to the first embodiment.

  FIG. 2 is a block diagram showing the configuration of the recording / playback apparatus in the first embodiment.

  FIG. 3 is an explanatory diagram illustrating an example of a review operation setting screen according to the first embodiment.

  FIG. 4 is a flowchart showing the control of the recording / playback apparatus in the first embodiment.

  FIG. 5 is an explanatory diagram showing a video file in the first embodiment.

  First, the structure of the recording / reproducing apparatus 100 of 1st Embodiment is demonstrated using FIG. 1 and FIG.

  As shown in FIG. 1, the recording / playback apparatus 100 according to the first embodiment has a configuration in which a display unit main body 1 and a camera unit main body 2 are attached to be rotatable relative to each other.

  The display unit main body 1 is provided with a liquid crystal display unit 4 and a touch panel 5 disposed on the front surface of the liquid crystal display unit 4. The display unit body 1 is also provided with a power switch 7, a camera / DDR switch 8, a recording start button 9, a review switch 10, and a zoom button 11 that are operating means of the magneto-optical recording device 6 and the recording / reproducing device 100. ing.

  The camera body 2 is provided with a photographing lens 3 that is an imaging optical system.

  As shown in FIG. 2, the recording / playback apparatus 100 includes a lens driving unit 12, an image sensor 13, an A / D conversion unit 14, a signal processing unit 15, a frame memory 16, a data compression / decompression unit 17, and a buffer memory. 18, data access unit 19, audio input / output unit 20, D / A conversion unit 21, A / D conversion unit 22, audio signal processing unit 23, display image processing unit 24, control unit 25, touch panel input unit 26, ROM 27, The RAM 28 and the operation member input unit 29 are included. The lens driving unit 12, the image sensor 13, the A / D conversion unit 14, and the signal processing unit 15 are arranged in the camera unit main body 2, and other configurations are arranged in the display unit main body 1.

  The photographing lens 3 is an imaging optical system for forming an image of a subject to be photographed on an imaging surface of an imaging element 13 to be described later. The photographing lens 3 is controlled to drive autofocus or the like by a lens driving unit 12 described later.

  The liquid crystal display unit 4 is a liquid crystal display that displays an image taken by the image sensor 12. The liquid crystal display unit displays a menu when the recording / playback apparatus 100 is set.

  The touch panel 5 is an input device that performs input by touching the panel surface with a finger or a pen tip. The touch panel 5 outputs a position signal corresponding to the position designated by the contact operation. The touch panel 5 is made of a transparent material such as glass or resin, and an image displayed on the liquid crystal display unit 4 formed inside the touch panel 5 can be viewed via the touch panel 4. Yes. A position signal from the touch panel 5 is output to the touch panel input unit 26.

  The magneto-optical recording medium 6 is a recording medium for recording captured video and audio. The magneto-optical recording medium 6 has a disk shape capable of random access.

  The power switch 7 is a main switch that activates the recording / playback apparatus 100.

  The camera / DDR switch 8 is a switch for switching the operation mode in the recording / playback apparatus 100. The camera / DDR switch 8 is set to a shooting mode for performing a shooting operation by switching to the camera side. Further, the camera / DDR change-over switch 8 is set to a reproduction mode in which an image recorded on the magneto-optical recording medium 6 is reproduced by switching to the DDR (digital disk recorder) side.

  The recording start button 9 is a button for causing the recording / reproducing apparatus 100 to execute a recording operation. The recording start button 9 starts the recording operation when the recording / reproducing apparatus 100 is set to the shooting mode and is pressed in a standby state, and ends the recording operation by pressing the recording button 9 again during the recording operation. Return to standby mode.

  The review switch 10 executes a review operation when the button is pressed, that is, an operation of reproducing a predetermined time from the recording start portion of the image recorded immediately before or a predetermined time of the last portion.

  The zoom button 11 is a button for changing the shooting magnification at the time of recording. The zoom button 11 makes the photographing magnification lower than the current magnification when the wide (W) side is pressed. Further, the zoom button 11 increases the photographing magnification from the current magnification when the tele (T) side is pressed. In the present embodiment, the means for changing the photographing magnification may be either an optical zoom or an electronic zoom.

  The lens driving unit 12 controls driving such as an autofocus operation in the photographing lens 3. The lens driving unit 12 controls the driving of the photographing lens 3 based on the signal output from the signal processing unit 15.

  The imaging element 13 is a photoelectric conversion element that converts light incident on the imaging surface into a video signal and outputs the video signal. An example of the image sensor 13 is a CCD. The imaging element 13 adjusts the gain at the time of imaging based on the signal from the signal processing unit 15. The converted video signal is output to the A / D converter 14.

  The A / D conversion unit 14 converts the video signal output from the image sensor 13 from an analog signal to a digital signal. The video signal converted into the digital signal is output to the signal processing unit 15.

  The signal processing unit 15 performs signal processing such as white balance adjustment and gamma conversion on the video signal output from the A / D conversion unit 14. The video signal subjected to the signal processing is output to the frame memory 16. Further, the signal processing unit 15 detects the in-focus state from the contour component in the video signal, and outputs the detected information to the lens driving unit 12. Further, the signal processing unit 15 detects luminance information in the video signal, and outputs the detected information to the image sensor 13.

  The frame memory 16 is a memory that stores video signals for one frame or one field. The frame memory 16 stores the video signal output from the signal processing unit 15 for one frame or one field and then outputs it to the data compression / decompression unit 17 and the display image forming unit 24. Further, the frame memory 16 stores the video signal output from the data compression / decompression unit 17 for one frame or one field and then outputs it to the display image forming unit 24.

  The data compression / decompression unit 17 compresses the video signal output from the frame memory 16 and the uncompressed video signal and audio signal output from the buffer memory 18, and outputs them to the buffer memory 18. The data compression / decompression unit 17 decompresses the compressed video signal output from the buffer memory 18 and outputs the decompressed video signal to the frame memory 16. The data compression / decompression unit 17 is controlled by the control unit 25 for compression operation and decompression operation.

  The buffer memory 18 is a memory for temporarily storing video signals and audio signals output from the data compression / decompression unit 17, data access unit 19, and audio signal processing unit 23. The buffer memory 18 outputs the video signal output from the data compression / decompression unit 17 to the data access unit 19. Further, the buffer memory 18 outputs the video signal output from the data access unit 19 to the data compression / decompression unit 17. Further, the buffer memory 18 outputs the audio signal output from the audio signal processing unit 23 to the data access unit 19. Further, the buffer memory 18 outputs the audio signal output from the data access unit 19 to the audio signal processing unit 23.

  The data access unit 19 is an interface for reading and writing video signals and audio signals with respect to the magneto-optical recording medium 6. The data access unit 19 is controlled by the control unit 25. The data access unit 19 causes the compressed video signal and audio signal output from the buffer memory 18 to be written in the magneto-optical recording medium 6. Further, the data access unit 19 outputs the video signal and the audio signal read from the magneto-optical recording medium 6 to the buffer memory 18.

  The voice input / output unit 20 includes a microphone (not shown) for capturing the voice to be recorded and a speaker (not shown) for reproducing the recorded voice. The sound taken in by the microphone is converted into an audio signal and then output to the A / D converter 22. Further, the speaker reproduces the audio signal output from the D / A converter 21.

  The D / A conversion unit 21 converts the audio signal output from the audio signal processing unit 23 from a digital signal to an analog signal. The D / A converted audio signal is output to the audio input / output unit 20 and output to the outside via a speaker (not shown).

  The A / D conversion unit 22 converts the audio signal output from the audio input / output unit 20 from an analog signal to a digital signal. The A / D converted audio signal is output to the audio signal processing unit 23.

  The audio signal processing unit 23 compresses the audio signal supplied from the A / D conversion unit 22 and outputs the compressed audio signal to the buffer memory 26. The audio signal processing unit 23 decompresses the audio signal read from the buffer memory 26 and outputs the decompressed audio signal to the D / A conversion unit 30.

  The display image creation unit 24 converts the video signal output from the frame memory 16 for display on the liquid crystal display unit 4. The converted video signal is output to the liquid crystal display unit 4 and displayed as an image.

  The control unit 25 is a control circuit that controls each component in the recording / playback apparatus 100. The control unit 25 receives instructions input by operating the operation members of the power switch 7, the camera / DDR switch 8, the recording start button 9, the review button 10, and the zoom button 11 via the operation member input unit 29. The recording / reproducing apparatus 100 is controlled based on the received instruction. A ROM 27 and a RAM 28 are connected to the control unit 25. The control unit 25 reads the control program stored in the ROM 25 and controls the recording / playback apparatus 100. Further, the control unit 25 has a built-in timer (not shown) and always performs a time measuring operation. When the camera / DDR switch 8 is on the camera side, the control unit 25 sets the recording / playback apparatus 100 to the shooting mode and stands by. Further, the control unit 25 sets the recording / playback apparatus 100 to the playback mode when the camera / DDR switch 8 is on the DDR side. Further, the control unit 25 starts the recording operation in response to the recording start button 9 being pressed during standby in the shooting mode state, and ends the recording operation when the recording start button 9 is pressed again during the recording operation. To do. After the end of recording, the video imaged during the video recording operation, that is, one cut video signal is recorded as one file on the magneto-optical recording medium 6 and returns to the imaging standby state. Further, the control unit 25 records the file name of the cut to be recorded at the start of the recording operation, the address of the recording start position in the magneto-optical recording medium 6 and the scene identification code in the RAM 28. Here, the scene in the first embodiment refers to a group of video cuts shot from when the recording / playback apparatus 100 is set to the shooting mode to when it is switched to the playback mode, as one scene. Further, when the recording operation is finished, the control unit 25 records the address of the magneto-optical recording medium 6 at the end time in the RAM 28. The control unit 25 sets a recording operation for a predetermined time as one interval, and records the recording position address at the time when one interval elapses in the magneto-optical recording medium 6 in the RAM 28 every time one interval elapses. Whether or not a predetermined time for one interval has elapsed may be determined by measuring time by a built-in timer (not shown) to determine whether or not a recording operation for a predetermined time has been performed. It may be determined whether or not a predetermined number of frames have been recorded after setting the number of recording frames when performing the recording operation. In addition, as a unit of one interval, a GOP (Group Of Picture) in a MPEG (Motion Picture Experts Group) format which is a standard format in moving image recording may be regarded as a unit of the interval. Further, in response to an input from the review switch 10, the control unit 25 causes a review playback of a certain time from the beginning of the cut of the image recorded immediately before or a certain time at the end of the cut. The playback time at the time of review playback is the predetermined number of intervals from the beginning of the cut when review playback is performed at the beginning of the cut, and is determined from the interval position immediately before the end of the cut when review playback is performed at the end of the cut. You can play back a number of intervals.

  The touch panel input unit 26 outputs a position signal that is an operation input signal from the touch panel 5 to the control unit 25.

  The ROM 27 is a read-only memory in which a program for controlling the recording / reproducing apparatus 100 is stored. The program stored in the ROM 27 is used by being appropriately read by the control unit 25 as necessary.

  The RAM 28 is a memory for appropriately recording data, programs, and the like necessary for the control unit 25 to execute various processes. The RAM 28 records the recording start address and recording end address of the video file, and the interval number and interval address during the recording operation. The RAM 28 records the scene identification code of the video file. The RAM 28 is composed of a non-volatile memory so that the recorded content does not disappear even when the recording / reproducing apparatus 100 is turned off.

  The operation member input unit 29 outputs signals from the operation members of the power switch 7, the camera / DDR switch 8, the recording start button 9, the review switch 10, and the zoom button 11 to the control unit 25.

  The data compression / decompression unit 16, the display image creation unit 24, the control unit 25, and the touch panel input unit 26 are realized by internal functions of the microprocessor.

  Next, setting of the shooting mode by the liquid crystal display unit 4 and the touch panel 5 will be described with reference to FIG. As shown in FIG. 3, the setting menu is displayed by clicking the touch panel at the menu switch position displayed on the liquid crystal display unit 4. In the setting menu, the lower hierarchy is displayed every time the upper hierarchy menu displayed at the upper left in the figure is selected. In the setting menu, the shooting mode and optional functions of the recording / playback apparatus 100 can be set. In the present embodiment, a review mode setting is provided in the option menu. In the review mode setting, as the selection of the part to be reviewed, the beginning or the end of the video cut is selected. In addition, it is configured to select ON / OFF of an auto review mode in which a review is automatically performed immediately after shooting. The setting is selected by clicking on the touch panel where the menu to be selected is displayed. In FIG. 3, the head display mode is selected as the review portion, and the auto review mode indicates a state where ON is selected.

  Next, a control procedure in the first embodiment will be described with reference to FIG.

  When the camera / DDR selector switch 8 is switched to the camera side and the recording / reproducing apparatus 100 is set to the photographing mode, the process jumps to step S1 of the flowchart shown in FIG.

  Next, in step S2, the on / off state of the review switch 10 is investigated. If the review switch 10 is on, it is determined that a review operation is to be performed, and the process proceeds to step S3. On the other hand, if the review switch 10 is OFF, the process proceeds to step S4 as a determination that no review operation is performed.

  If the state of the review switch 10 is on in step S2, the process proceeds to step S3. In step S3, the reproduction time of the video signal recorded on the magneto-optical recording medium is set to a predetermined time TL. When the process of step S3 is completed, the process proceeds to step S13.

  If the state of the review switch 10 is OFF in step S2, the process proceeds to step S4. In step S4, it is investigated whether or not the recording start button 9 is input. If there is an input of the recording start button 9, it is determined that recording is to be performed, and the process proceeds to step S5. If there is no input from the recording start button 9, it is determined that recording is not performed, and the process proceeds to step S <b> 2 and waits until there is an input to the recording start button 9 or the review switch 10.

  If there is an input of the recording start button 9 in step S4, the process proceeds to step S5. In step S5, the file name of the cut to be recorded, the start position address of the file in the magneto-optical recording medium 6, and the recording time interval T0 are recorded in the RAM 28. In addition, a scene identification code used for reviewing a scene to be described later is also recorded in the RAM 28. When the process of step S5 is completed, the process proceeds to step S6.

  Next, in step S6, a recording operation is performed. When the process of step S6 is completed, the process proceeds to step S7.

  Next, in step S7, it is determined whether or not a recording operation for a predetermined time has been performed. If recording has been performed for a predetermined time, the process proceeds to step S7. If the recording operation for a predetermined time has not been performed, the process proceeds to step S9.

  If a recording operation for a predetermined time is performed in step S8, the process proceeds to step S8. In step S8, 1 is added to the recording position address of the file on the magneto-optical recording medium 6 at the present time when the recording for a predetermined time is performed, and the value of the recording time interval is recorded in the RAM 28. When the process of step S8 is completed, the process proceeds to step S9.

  Next, in step S9, it is investigated whether or not the recording start button 9 has been input. If there is an input from the recording start button 9, it is determined that the recording operation is to be terminated, and the process proceeds to step S10. If there is no input from the recording start button 9, it is determined that the recording operation is to be continued, and the process proceeds to step S6 to continue the recording operation.

  If there is an input of the recording start button 9 in step S9, the process proceeds to step S10. Step S10 ends the recording operation. Then, the end position address in the magneto-optical recording medium 6 of the video file at the end of the recording operation is recorded in the RAM 28. When the process of step S10 is completed, the process proceeds to step S11.

  Next, in step S11, the on / off setting state of the auto review operation is investigated. If the setting state of the auto review operation is on, it is determined that the review operation is performed, and the process proceeds to step S12. On the other hand, if the setting state of the auto review operation is OFF, it is determined that the review operation is not performed and the process proceeds to step S2 and waits.

  If the setting state of the auto review operation is on in step S11, the process proceeds to step S12. In step S12, the reproduction time of the video signal recorded on the magneto-optical recording medium is set to a predetermined time TS shorter than TL. When the process of step S12 is completed, the process proceeds to step S13.

  Next, in step S13, it is checked whether the review position is set at the beginning or end of the cut. If the review position is set at the top of the cut, the process proceeds to step S14. If the review position is set at the end of the cut, the process proceeds to step S17.

  If the review position is set at the top of the cut in step S13, the process proceeds to step S14. In step S14, the recording position address of the video file recorded in the RAM 28 is called, the head of the file, that is, the address at the recording start time is set as the reproduction start position, and the head is set at the reproduction start position. When the process of step S14 is completed, the process proceeds to step S15.

  Next, in step S15, a video file playback operation is performed. When the process of step S15 is completed, the process proceeds to step S16.

  Next, in step S16, it is investigated whether or not the reproduction time set in step S3 or step S12 has elapsed. If the set playback time has elapsed, the process proceeds to step S2 and waits. If the set playback time has elapsed, the process proceeds to step S15 to continue the video file playback operation.

  If the review position is set at the end of the cut in step S13, the process proceeds to step S17. Step S17 calls the recording position address of the video file recorded in the RAM 28, sets the file address at the position obtained by subtracting the playback time set in step S3 or S12 from the end of the file as the playback start position, and starts playback. Head to the position. When the process of step S17 is completed, the process proceeds to step S18.

  Next, in step S18, a video file reproduction operation is performed. When the process of step S18 is completed, the process proceeds to step S19.

  Next, in step S19, it is investigated whether or not the reproduction time set in step S3 or step S12 has elapsed. If the set playback time has elapsed, the process proceeds to step S2 and waits. If the set playback time has elapsed, the process proceeds to step S18 to continue the video file playback operation.

  In the first embodiment, there is a difference between the playback time in the review mode according to the user's instruction set in step S3 in FIG. 4 and the playback time in the auto review mode immediately after recording set in step S12. ing. In the auto review mode, if the review time is set to be long, the timing of entering the next recording is delayed, and it is assumed that it may be inconvenient in some cases, so the playback time is set to a short time. On the other hand, since it is considered that the review based on the user's instruction has a certain playback time, it is considered that the review is longer than the auto review mode. FIG. 5 shows an example of setting the reproduction time depending on the review mode. FIG. 5 is an explanatory diagram showing a video file according to the first embodiment of the present invention. As shown in FIG. 5, the video file of the first embodiment includes a recording start address and a recording end address in the magneto-optical recording medium 6, an interval number for each predetermined recording operation during the recording operation, and recording on the magneto-optical recording medium. An interval address as a position is recorded in the RAM 28. Then, in the example of FIG. 5, the control unit 25 sets three intervals from T0 to T2 or Tn-2 to Tn as TS which is the reproduction time in the auto review mode, and performs auto review reproduction based on the recording position address. I do. In the case of the review mode in response to an instruction from the operator, four intervals from T0 to T3 or Tn-3 to Tn are set as the reproduction time TL, and review reproduction is performed based on the recording position address. In this way, the control unit 25 provides a difference in the reproduction time by changing the number of intervals when performing the reproduction in accordance with the review mode.

  Also, depending on the video recording time, there may be a case where one video file is shorter than the review mode playback time. In such a case, the entire file may be reproduced.

  In the first embodiment, the file name assigned to the video file is recorded in the RAM 28. However, the file name may be recorded in a different area from the video file of the magneto-optical recording medium 6. Similarly, the recording start address, the interval number during recording operation, the address, and the recording end address in the magneto-optical recording medium 6 may be recorded in another area of the magneto-optical recording medium 6.

  Next, the scene review operation in the first embodiment will be described with reference to FIGS.

  FIG. 6 is an explanatory diagram showing an example of a display screen in the playback mode in the first embodiment.

  FIG. 7 is a flowchart showing the control of the scene review operation in the first embodiment.

  First, the scene review operation in the first embodiment refers to the same scene identification code in the shooting mode when the recording / playback apparatus 100 is set to the playback mode after shooting a plurality of cuts in one shooting mode. This is a function for fast-forward playback of recorded video cut files in the order of recording.

  Next, a display example of the liquid crystal display unit 4 in the playback mode of the recording / playback apparatus 100 will be described with reference to FIG.

  In FIG. 6, A, B, C, D, E, and F indicate thumbnail images of one-cut video files. In each thumbnail image, a corresponding scene identification code and a serial number in the scene are displayed below the image. For example, in the case of the thumbnail image of B, a 3-2 code is displayed below the image, among which 3 on the left side indicates a scene identification code and 2 on the right side indicates a serial number in the scene. That is, the B video file is the second video file with the identification code 3. Therefore, in the example shown in FIG. 6, one scene named scene 3 is shown in the A, B, and C video files, and recording is performed in the order of C, B, and A. Similarly, the video files of D and E are one scene called scene 2 and indicate that they were recorded in the order of E and D.

  In addition, arrows L and R in FIG. 6 indicate switching buttons for switching the display of the thumbnail list when more than the number of video files that can be displayed on the liquid crystal display unit 4 is recorded on the magneto-optical recording medium 6. Show.

  The REV button displayed at the lower left in FIG. 6 is a scene review button for performing a scene review. The scene review operation will be described by taking the image of scene 3 as an example. When the touch panel 5 at the position of any thumbnail image of A, B, or C is clicked and then the touch panel 5 at the position of the scene review button REV is clicked, C, B , A in order of video file fast-forward playback. Thereby, a series of scenes can be confirmed.

  A button S displayed at the lower right in FIG. 6 is a button for deleting a video file. The video file is deleted by clicking the touch panel 5 at the position of the thumbnail image to be deleted and then clicking the touch panel 5 at the position of the delete button S.

  In addition, six buttons displayed between the REV button and the delete button are buttons for reproducing a video file. The buttons indicate operation buttons for reverse fast forward, reverse playback, stop, pause, forward playback, and forward fast forward from the left.

  Next, control during a scene review operation will be described with reference to FIG.

  First, in step S51, the presence / absence of input of the scene review button REV is checked. If there is an input of the scene review button REV, it is determined that the scene review is to be performed, and the process proceeds to step S52. If there is no input of the scene review button REV, it is determined that the scene review is not performed, and the process waits in step S51.

  Next, in step S52, the identification code of the scene to be subjected to the scene review is searched. When the process of step S52 is completed, the process proceeds to step S53.

  Next, in step S53, after picking up video files with identification codes of scenes to be reviewed, they are arranged in ascending order of scene serial numbers to create a video signal playback order list. Also, the reproduction count flag i is initialized and i = 1 is set. When the process of step S53 is completed, the process proceeds to step S54.

  Next, in step S54, the i-th video file in the list is played back in fast-forward. When the process of step S54 is completed, the process proceeds to step S55.

  Next, in step S55, it is investigated whether or not a stop button has been input. If there is an input of a stop button, it is determined that the scene review operation is to be stopped, and the process proceeds to step S51 and waits. If no stop button is input, it is determined that the scene review operation is to be continued, and the process proceeds to step S56.

  If no stop button is input in step S55, the process proceeds to step S56. In step S56, the current address of the video file is checked. If the address matches the recording end address, it is determined that the reproduction of one video signal file has been completed, and the process proceeds to step S57. If the address does not match the recording end address, it is determined that the reproduction of the video signal file has not been completed, and the process proceeds to step S54 to continue the reproduction operation.

  If it is determined in step S56 that the reproduction of one video file has been completed, the process proceeds to step S57. A step S57 compares the value of the counter flag i with the total number of listed video files. If the value of the counter flag i is equal to the total number of listed video files, it is determined that all playback operations of the listed video files have been completed, and the process proceeds to step S51 and waits. If the value of the counter flag i is not equal to the total number of listed video files, it is determined that all playback operations of the listed video files have not been completed, and the process proceeds to step S58.

  If it is determined in step S57 that the reproduction operation has not been completed, the process proceeds to step S58. Step S58 increments the value of the counter flag i by one. When the process of step S58 is completed, the process proceeds to step S54, and the reproduction operation is continued.

  In the first embodiment, a set of video cuts that have been shot from when the recording / playback apparatus 100 is set to the shooting mode to when it is switched to the playback mode is regarded as one scene. As a method for discriminating a scene, a group of video cuts shot before the power switch 7 is turned on and turned off may be regarded as one scene. Further, the recording date of the file may be checked from the management information of the video cut file, and a group of video cuts having the same recording date may be regarded as one scene. Alternatively, the user may arbitrarily select a plurality of video cuts, and add a common scene identification code to the selected video cuts, so that a group of the selected video cuts may be regarded as one scene.

  As described above, in the present embodiment, the review is performed in order to store the address of the disk recording medium indicating the head position of the video cut at the time of video recording and the address of the disk recording medium at the time of recording for a certain period of time. It is possible to quickly search for a video cut to be performed. In addition, at the time of video reproduction, it is possible to perform review for each video scene by storing a scene identification code indicating a video scene composed of a plurality of video cuts.

FIG. 1 is an external view of a recording / playback apparatus according to the first embodiment. FIG. 2 is a block diagram showing the configuration of the recording / playback apparatus in the first embodiment. FIG. 3 is an explanatory diagram illustrating an example of a review operation setting screen according to the first embodiment. FIG. 4 is a flowchart showing the control of the recording / playback apparatus in the first embodiment. FIG. 5 is an explanatory diagram showing a video file in the first embodiment. FIG. 6 is an explanatory diagram showing an example of a display screen in the playback mode in the first embodiment. FIG. 7 is a flowchart showing the control of the scene review operation in the first embodiment.

Explanation of symbols

1: Display unit body 2: Camera unit body 3: Shooting lens 4: Liquid crystal display unit 5: Touch panel 6: Magneto-optical recording device 7: Power switch 8: Camera / DDR switch 9: Recording start button 10: Review switch 11: Zoom button 12: Lens drive unit 13: Image sensor 14: A / D conversion unit 15: Signal processing unit 16: Frame memory 17: Data compression / decompression unit 18: Buffer memory 19: Data access unit 20: Audio input / output unit 21: D / A converter 22: A / D converter 23: Audio signal processor 24: Display image processor 25: Control unit 26: Touch panel input unit 27: ROM
28: RAM
29: Operation member input unit 100: Recording / playback apparatus

Claims (3)

An input means for inputting a moving image signal;
Randomly accessible first recording means for recording the moving image signal input from the input means;
Second recording means for recording recording start position information and recording end position information of the moving image signal in the first recording means;
List display means for displaying a list of the moving image signals recorded in the first recording means on a display means;
Selecting means for selecting at least one of the video signals displayed in the list;
Review reproduction means for reproducing a part based on the recording start position information or a part based on the recording end position information of the moving image signal selected by the selection means on the display means for a predetermined time;
A recording / playback apparatus comprising: The said review reproduction | regeneration means reproduces | regenerates the said moving image signal from the said recording start position to the said recording end position from the position traced back for the predetermined time or predetermined time from the said recording end position. Recording / playback device. 2. The review reproduction unit, when there are a plurality of the moving image signals selected by the selection unit, reproduces a part of the selected plurality of moving image signals for a predetermined time according to a selected order. The recording / reproducing apparatus described in 1.