JP2005244621A - Video camera - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the various problems wherein the conventional external video recorder for the dubbing use needs a special constitution and, for the edition works, the VTR integrated with a camera cannot execute alone the edition works, and reproduced picture signals need to be copied to a take-up apparatus during the edition work. <P>SOLUTION: A list of thumbnail images reproduced from a folder corresponding to the tape ID of a memory card 16 at their recording start positions is shown to determine the dubbing start point by selecting one thumbnail image of scenes to be dubbed, using an operating part 6. When the dubbing start point is determined, a point just before the next recording start position is automatically set as a dubbing end point in a central processing microcomputer 5. According to the dubbing order, the dubbing start and end points are set up. Then the heading between dubbing recording sections is made to start reproducing on a magnetic tape 11 from the dubbing start point and an external video recorder 21 starts the dubbing recording. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a video camera, and more particularly to a video camera that includes a tape cue search means and records a video signal recorded on a recording medium onto another recording medium.

  2. Description of the Related Art Conventionally, there is known a video camera that edits a video signal recorded on a recording medium as needed and performs dubbing recording on another recording medium. FIG. 4 shows a block diagram of an example of a conventional video camera. In the figure, the video signal recorded on the magnetic tape by the camera-integrated VTR 31 is edited by the camera-integrated VTR 31 as necessary. Thereafter, synchronization is established between the camera-integrated VTR 31 and the external video recording device 34 via the control line 33, and the video signal of the recording section to be dubbed and recorded, which is reproduced by the camera-integrated VTR 31, is the signal line 32. Are supplied to the external video recording device 34 through the recording medium and recorded on a recording medium such as a magnetic tape by the external video recording device 34.

  As the camera-integrated VTR 31, a camera-integrated VTR having an editing function has been conventionally known (see, for example, Patent Document 1). In the camera-integrated VTR described in Patent Document 1, an external video recording device 34 which is an external recording device is registered in advance, and a code string for correcting a remote control signal used in association with the registered external video recording device Registering means for holding the recording medium, selecting means for selecting an arbitrary external recording device from among a plurality of external recording devices, and remote control corresponding to the selected external recording device (external video recording device 34) at the start of a predetermined operation Transmitting means for reading a code string constituting the signal and transmitting a remote control signal composed of the read code string to the external video recording device 34.

  According to this conventional video camera, since the reproduction video signal is output from the camera-integrated VTR 31 and the code signal of the recording operation pause release command is supplied to the external video recording device 34, the external video recording device 34 receives the video signal. The recording pause state is canceled based on the code signal, and at the same time, dubbing recording of the supplied reproduced video signal onto a recording medium such as a magnetic tape is started. When the camera-integrated VTR 31 plays back to the predetermined editing end position and stops the playback operation, the code signal of the pause command is supplied to the external video recording device 34. Therefore, the external video recording device 34 that has received the code signal. Automatically pauses the recording operation.

  FIG. 5 shows a block diagram of another example of a conventional video camera. In the figure, a recording section of a magnetic tape on which a video signal is recorded by a camera-integrated VTR 35 is reproduced, and the reproduced video signal is captured by a personal computer (personal computer) via a serial bus 36. Supplied to the device 37.

  The capture device 37 edits the input playback video signal as necessary, and supplies the edited playback video signal to the external video recording device 39 via the serial bus 38, where a recording medium such as a magnetic tape is provided. To record. In this conventional video camera, since the camera-integrated VTR 35 and the capture device 37 and between the capture device 37 and the external video recording device 39 are connected by the serial buses 36 and 38, the control line And signal lines can be integrated.

JP 9-191444 A

  However, in the conventional video camera of FIG. 4, it is necessary that the external video recording device 34 has a special configuration including code signal receiving means and control means corresponding to the received code, and the external video used for dubbing recording is required. An existing recording device cannot be used as the recording device 34. Further, for the editing work, the external video recording device 34 is necessary, and the editing work cannot be performed by the camera-integrated VTR 31 alone.

  Further, in the conventional video camera shown in FIG. 5, it is necessary to copy the reproduced video signal to the capturing device 37 during the editing work, so that the capturing device 37 is necessary, the entire apparatus becomes expensive, and an external video is required. There is also a problem that it takes time to connect the recording device 39 and shift to the dubbing operation.

  The present invention has been made in view of the above points, and an object thereof is to provide a video camera capable of performing dubbing recording easily in a short time and with an inexpensive configuration.

  Another object of the present invention is to provide a versatile video camera capable of performing dubbing recording using an arbitrary recording device.

  FIG. 1 shows a principle configuration diagram of a video camera according to the present invention which achieves the above object. As shown in the figure, the present invention is connected to a video camera A and the video camera A via a serial bus C, and a reproduction video signal supplied from the video camera A via the serial bus C is a predetermined video signal. An external video recording device B for recording on a recording medium. The video camera A records the subject image obtained by imaging with the image sensor on the first recording medium, and records the search image at the start of recording and the recording of the first recording medium every time recording of the subject image is started. Recording means for recording start position information on a portable second recording medium, and at the time of cueing search, search images recorded on the second recording medium are displayed as a list on the display unit and displayed as a list By selecting the search image, the position of the first recording medium indicated by the recording start position information of the first recording medium recorded on the second recording medium in association with the selected search image is selected. Cue reproduction means for performing cue reproduction is provided, and dubbing recording is performed on the third recording medium.

  The present invention also provides a display means for displaying a list of a plurality of search images recorded on the second recording medium on the display unit on the video camera A, and a plurality of search images displayed as a list on the display unit. The search image corresponding to the video signal to be dubbed and recorded is recorded on the second recording medium in correspondence with the search image selected by the selection unit and the selection unit sequentially selecting the image for dubbing recording. The first recording start position information of the first recording medium is the dubbing start point, and the second recording start position of the first recording medium recorded on the second recording medium following the dubbing start point The dubbing section setting means for setting the position information immediately before the information as the dubbing end point in the order selected by the selecting means, and the dubbing section set by the dubbing section setting means of the first recording medium Find and further provided a dubbing reproducing means for reproducing, an external video recording device B records the video signal reproduced from the dubbed section of the first recording medium by the dubbing reproducing means to a third recording medium.

  In the present invention, every time recording of the subject image captured by the video camera A onto the first recording medium is started, the search image at the start of recording and the recording start position information of the first recording medium are stored in the second recording medium. Since the search images corresponding to the video signals to be dubbed are sequentially selected from the plurality of search images displayed in a list in the order of dubbing recording, the selected search is performed. The first recording start position information of the first recording medium recorded on the second recording medium in association with the image for use is used as the dubbing start point, and is recorded on the second recording medium following the dubbing start point. The position information immediately before the second recording start position information of the first recording medium can be set as the dubbing end point.

  In the present invention, the external video recording device B is configured to record the video signal reproduced from the dubbing section of the first recording medium on the third recording medium by the dubbing reproducing means. A special configuration such as a receiving function is not necessary.

  In order to achieve the above object, the present invention further includes special effect setting means for arbitrarily setting a special effect to one or both of the dubbing start point and the dubbing end point set by the dubbing section setting means. The above dubbing reproduction means provides a special effect to the reproduction video signal near the dubbing start point or dubbing end point to which the special effect is given by the special effect setting means and outputs to the external video recording device. It is characterized by

  According to the present invention, the dubbing start point is used by using the image recorded on the second recording medium every time recording starts on the first recording medium and the recording start position information, which are used in the cue / playback unit of the video camera. Since the dubbing end point is set, a desired dubbing section can be set in a short time and the video signal reproduced from the dubbing section can be recorded on the third recording medium, greatly improving user convenience. it can.

  In addition, according to the present invention, since the above-described image and recording start position information can be canceled by the video camera alone, other editing equipment such as copying to the HDD device of a personal computer or a dubbing counterpart equipment is required. Therefore, the editing operation for the dubbing recording can be performed, so that the dubbing recording can be edited without wasting time such as the destination or moving. Further, according to the present invention, since the dubbing operation can be quickly performed after the external video recording device is connected, the total time until the user obtains the final dubbing medium can be minimized.

  Further, according to the present invention, information is recorded in association with the first recording medium and the second recording medium and can be taken out from the video camera at any time. It can be reused and has the feature that it doesn't choose the other device to record.

  Next, the best mode for carrying out the present invention will be described. FIG. 2 shows a block diagram of an embodiment of a video camera according to the present invention. In the figure, the portion excluding the serial bus 20 and the external video recording device 21 corresponds to the video camera A provided with the above-described tape cue search means. The serial bus 20 is connected to the serial bus C and the external video recording device. 21 corresponds to the external video recording device B.

  The video camera of the present embodiment uses the video camera previously disclosed by the present applicant in Japanese Patent Laid-Open No. 2002-218366. First, the operation during recording will be described. Incident light from the subject focused by the lens 1 is imaged on the image sensor 2 and photoelectrically converted, supplied to the A / D converter 3 as an image signal, and converted into a digital signal. The digital signal output from the A / D converter 3 is supplied to an image processing DSP (digital signal processor) 4 so as to have a luminance signal Y and two kinds of color difference signals (RY) and (BY). And various signal processing such as automatic gain control (AGC), gamma correction, and setup.

  When an instruction for moving image recording (recording) is given by the operation unit 6, the instruction signal is input to the central processing microcomputer 5. The central processing microcomputer 5 constitutes a control unit that comprehensively controls the entire video camera, and supplies a control signal indicating a moving image recording instruction to the image processing DSP 4 and the deck control microcomputer 8 based on the above instruction signal input. To do. The deck control microcomputer 8 supplies a control signal and the like to the DV signal processing DSP 7.

  The DV signal processing DSP 7 applies compression processing and shuffling processing based on the DV standard to the luminance signal and two kinds of color difference signals supplied from the image processing DSP 4, as well as tracking information, subcodes, and the like. Various control data such as area information, audio recording format information, time code, date and time information are added and supplied as a DV format signal to the pre-recording amplifier 9, where it is NRZI modulated and then supplied to the rotary head 10. The inclined track 11a is sequentially formed on the magnetic tape 11 and recorded. Note that a plurality of rotary heads 10 are actually mounted on a rotary drum (not shown), and they are sequentially used cyclically. However, for convenience of illustration, only one representative is shown.

  Here, in the video camera according to the present embodiment, when an instruction to record a moving image is given by the operation unit 6, the captured initial image (video at the start of recording) is recorded on the memory card 16 as a still image (thumbnail image). And has a function of searching for a tape cue using this still image (thumbnail image).

  That is, when a moving image recording instruction is given by the operation unit 6, the central processing microcomputer 5 supplies a control signal to the still image recording / reproducing control microcomputer 14 so as to perform still image recording. The still image recording / reproducing control microcomputer 14 controls the still image DSP 12 and causes the still image DSP 12 to capture a video signal composed of a luminance signal of the captured moving image generated by the image processing DSP 4 and two kinds of color difference signals. The video signal supplied to the still image DSP 12 is temporarily stored in a synchronous dynamic random access memory (SDRAM) 13, read out by the still image DSP 12, subjected to JPEG compression processing, and further subjected to three primary color signals. And is supplied to the still image recording / reproducing control microcomputer 14.

  The still image recording / reproducing control microcomputer 14 supplies the input three primary color signals to the memory card 16 via the interface (I / F) unit 15 and stores them. The still image stored in the memory card 16 is a thumbnail image (still image file) of, for example, about 160 horizontal pixels × 120 vertical pixels from the image at the start of shooting.

  Next, the operation during reproduction will be described. When an instruction to reproduce the information recorded on the magnetic tape 11 is given by the operation unit 6, the signal reproduced from the magnetic tape 11 by the rotary head 10 is pre-amplified by the pre-recording amplifier 9 and supplied to the DV signal processing DSP 7. In this case, decompression processing, deshuffling processing, and the like are performed. The image processing DSP 4 converts the playback video signal input from the DV signal processing DSP 7 into a component signal or a composite signal, and supplies the component signal or composite signal to the AV output unit 18 via the D / A converter 17. Is output.

  On the other hand, the deck control microcomputer 8 supplies the control data input from the DV signal processing DSP 7 to the central processing microcomputer 5. Of the control data, time code, date and time information, etc. are supplied as display information to the image processing DSP 4 and are superimposed on the reproduced video signal.

  When the operation unit 6 gives an instruction to reproduce the recorded still image on the memory card 16, the still image file reproduced from the memory card 16 passes through the I / F unit 15 and the still image recording / reproduction control microcomputer 14. To the still image DSP 12. The still image DSP 12 once writes and reads the input still image file in the SDRAM 13, performs JPEG expansion processing on the read still image signal, and supplies it to the image processing DSP 4. The image processing DSP 14 converts the still image signal into a predetermined signal and then supplies it to the AV output unit 18 via the D / A converter 17 to output a still image.

  Various control data such as the image size and date / time information of the still image are supplied from the still image DSP 12 to the central processing microcomputer 5 via the still image recording / reproducing control microcomputer 14. Of the control data, date information and the like are input to the image processing DSP 4 as display information and superimposed on the video signal. This still image is reproduced when it is used as a thumbnail image for searching video recorded on the magnetic tape 11.

  By the way, in this embodiment, a tape ID and a tape number, which are identification numbers, are assigned to each tape cassette containing the magnetic tape 11, a folder is created for each tape ID in the memory card 16, and the above thumbnail image is obtained. In the folder. On the magnetic tape 11, the tape ID and the unique number (memory ID) of the memory card 16 are recorded continuously (for example, on all tracks) in the subcode area 11a1 of each track 11a. Since a memory card such as a multimedia card has a readable serial number, at least a part of the serial number is used as the memory ID.

  Further, the deck control microcomputer 8 manages the position information (time code) of the magnetic tape, supplies the time code to the still image recording / playback control microcomputer 14 via the central processing microcomputer 5, and the time code at the start of photographing. Is associated with the thumbnail image and written in the folder of the memory card 16. The recording of the thumbnail image to which the above time code is added is performed every time recording is started. Note that when recording is started, not only when recording is newly started from a state where recording is completely stopped, but also when the captured video signal is being input, recording is temporarily stopped. This includes the case where recording is started by releasing the pause from the recording standby state.

  Next, the tape cueing operation of this embodiment will be described. When the tape cassette containing the magnetic tape 11 is loaded, the central processing microcomputer 5 and the deck control microcomputer 8 rewind the magnetic tape 11 a little and read the tape ID and card ID written on the magnetic tape 16. . Thereby, the tape ID of the loaded tape cassette is determined. If the card ID of the memory card 16 matches the card ID read from the magnetic tape 11, a search thumbnail image can be read from the folder in the memory card 16 corresponding to the tape ID.

  One or more thumbnail images reproduced from the folder corresponding to the tape ID are output from the AV output unit 18 and displayed in accordance with the operation of the search switch in the operation unit 6. Move the cursor to the image and press the switch to determine the thumbnail image you want to cue. The still image recording / playback control microcomputer 14 reads out the time code associated with the determined thumbnail image from the memory card 16 via the I / F unit 15 and supplies it to the central processing microcomputer 5. A comparison is made with the current position of the magnetic tape 11 acquired from the subcode area 11a1 based on the time code currently reproduced.

  The central processing microcomputer 5 rewinds the magnetic tape if the current position of the magnetic tape 11 is before the tape position to be cued, and fast-forwards the magnetic tape 11 if it is after the current position. A control signal is supplied to the control microcomputer 8. Thereby, the moving image corresponding to the thumbnail image to be cued is cued and reproduced.

  In the video camera having the above cue search function, in this embodiment, the time code of the tape position at the start of shooting is written in the folder of the memory card 16 in association with the thumbnail image every time shooting is started. Thereby, for example, as schematically shown in FIG. 3A, shooting is started at each position indicated by # 1, # 2, # 3, # 4, # 5, and # 6 of the magnetic tape 11. Then, the time code at the tape positions at positions # 1, # 2, # 3, # 4, # 5, and # 6 and the thumbnail image of the photographed image are associated with each other and recorded on the memory card 16.

  At the time of dubbing, first, dubbing recording section setting is performed. In the dubbing recording section setting, when the user operates the dubbing recording setting switch on the operation unit 6, as in the above-described cueing search operation, # 1 reproduced from the folder corresponding to the tape ID of the memory card 16, Since thumbnail images at the recording start positions indicated by # 2, # 3, # 4, # 5, and # 6 are output from the AV output unit 18 and displayed in a list on the screen, # 1, # 2, # 3, # The user determines the dubbing start point by moving the cursor from the thumbnail images at the recording start positions indicated by 4, # 5, and # 6 to the thumbnail image briefly indicating the scene to be dubbed and pressing the switch. When the dubbing start point is determined, the central processing microcomputer 5 automatically sets the dubbing end point immediately before the next recording start position.

  At this time, the dubbing start point and dubbing end point are set in the dubbing order. Thus, for example, if the thumbnail images are selected in the order of recording start positions # 1, # 5, and # 3 in the recording section of the magnetic tape 11 shown in FIG. The point is the recording start position # 1, and immediately before the next recording start position # 2 of # 1 is automatically set in the central processing microcomputer 5 as the first dubbing end point.

  Similarly, the second dubbing start point is the recording start position # 5, and immediately before the next recording start position # 6 of # 5 is automatically set as the second dubbing end point. The start point is the recording start position # 3, and the point immediately before the next recording start position # 4 of # 3 is automatically set in the central processing microcomputer 5 as the third dubbing end point.

  In this embodiment, when the dubbing recording section is set, special operations such as fading in near the dubbing start point and fading out at the dubbing end point for each of the dubbing start point and dubbing end point are performed by operating the operation unit 6. The effect can be arbitrarily set independently of the image processing DSP 4 via the central processing microcomputer 5. Therefore, here, as an example, it is assumed that special effects are set at the dubbing start points # 1, # 3, and # 5 and the dubbing end point (immediately before # 6).

  When the above setting process of the dubbing recording section is completed, a dubbing recording process start operation is subsequently performed by the operation unit 6. Thereby, first, the first dubbing recording section is cued based on the above-described tape cueing operation, and the dubbing start point # 1 of the first dubbing recording section is searched. When the magnetic tape 11 comes to the dubbing start point # 1, the reproduction of the magnetic tape 11 is started and the recording of the external video recording device 21 is started.

  That is, a video signal or the like started to be reproduced from the position of the dubbing start point # 1 of the magnetic tape 11 by the rotary head 10 is preamplified by the pre-recording amplifier 9 and supplied to the DV signal processing DSP 7, where decompression processing or deshuffling is performed. Processing is performed. The image processing DSP 4 performs special effect processing on the reproduced video signal input from the DV signal processing DSP 7 when the central processing microcomputer 5 instructs to apply the special effect, and then converts it into a component signal or a composite signal. The video signal and the audio signal are supplied to the AV output unit 18 via the D / A converter 17 and output from the external video recording device via the serial bus IF (interface) 19 such as IEEE1394 or USB and the serial bus 20. 21 to be recorded on a recording medium.

  Here, until the dubbing start point # 1 is searched, the central processing microcomputer 5 outputs a recording standby command and controls not to output a signal from the serial bus IF 19 to put the external video recording device 21 in a recording standby state. When the search is completed, a recording start command is output and the serial bus IF 19 is controlled to be in an operating state, and the external video recording device 21 is brought into a recordable state from the previous recording standby state. The external video recording device 21 may be any device capable of recording such as a VTR and an optical disk device, and the recording medium may be a desired recording medium such as a magnetic tape, an optical disk, an HDD, or a semiconductor memory.

  The central processing microcomputer 5 determines that the current position of the magnetic tape 11 acquired based on the time code reproduced from the subcode area 11a1 of the magnetic tape 11 during the reproduction is the first dubbing end point (immediately before the recording start position # 2). ) And the deck control microcomputer 8 and the image processing DSP 4 are controlled to stop the reproduction operation.

  After the reproduction operation is stopped, the central processing microcomputer 5 automatically supplies a control signal to the deck control microcomputer 8 so as to find the tape position of the next dubbing start point # 5. Thereby, the deck control microcomputer 8 controls the running of the magnetic tape 11 so that the rotary head 10 can start reproduction from the tape position at the dubbing start point # 5. When the magnetic tape 11 comes to the position of the next dubbing start point # 5, the reproduction of the magnetic tape 11 is automatically started as described above, and the recording of the external video recording device 21 is automatically started.

  Thereafter, by repeating the same operation as described above, the recording medium of the external video recording device 21 has a dubbing start point # 1 to a dubbing end point (# 2) as schematically shown in FIG. The video signal of the recording section R1 until immediately before), the video signal of the recording section R2 from the dubbing start point # 5 to the dubbing end point (immediately before # 6), and the dubbing start point # 3 to the dubbing end point (# 4) The dubbing recording synthesized in time series is performed in the order of the video signals in the recording section R3 until immediately before.

  As described above, the recording medium of the external video recording device 21 is as shown in FIG. 3B in the order in which the dubbing recording is designated irrespective of the recording order of the original magnetic tape 11 shown in FIG. In addition, dubbing recording is performed in a desired order. In the dubbing recording, when a special effect is designated, the video signal to be dubbed is recorded with a special effect. When a digital interface such as IEEE1394 is used as the serial bus IF 19 and the serial bus 20, dubbing with high image quality is possible.

  As described above, according to the present embodiment, dubbing can be easily performed in a short time by using the cue search means of the video camera, and the cue position information is taken (recorded). Because it is possible to cancel the setting at an arbitrary position with the selected video camera alone, editing equipment such as copying to the HDD device of the personal computer and the dubbing partner equipment are not required during editing work for setting the dubbing recording section. The editing operation can be completed, so that time such as going to the destination or moving is not wasted.

  Furthermore, in this embodiment, since the memory card 16 on which the dubbing start point time code and the thumbnail image are recorded is provided for each magnetic tape to be dubbed and recorded, the memory card 16 is taken out at any time and another device is used. It can also be reused when connected to the PC, and has the feature that it does not choose the other device.

It is a principle block diagram of this invention. It is a block diagram of one embodiment of the present invention. It is a recording state explanatory diagram of a recording medium for explaining the operation of dubbing recording in the present invention. It is a schematic block diagram of an example of the prior art. It is a schematic block diagram of the other conventional example.

Explanation of symbols

A Video camera B, 21 External video recording device C, 20 Serial bus 2 Image sensor 4 Image processing DSP (digital signal processor)
5 Central processing microcomputer 6 Operation part 7 DV signal processing DSP (digital signal processor)
8 Deck control microcomputer 10 Rotating head 11 Magnetic tape 12 Still image DSP (digital signal processor)
14 Still image recording / playback control microcomputer 16 Memory card 19 Serial bus IF (interface)

Claims (2)

A subject image obtained by imaging with an imaging element is recorded on a first recording medium, and each time recording of the subject image is started, a search image at the start of recording and recording start position information of the first recording medium are recorded. Are recorded on a portable second recording medium, and at the time of cueing search, the search images recorded on the second recording medium are displayed as a list on a display unit, and the list is displayed. By selecting the search image, the first recording indicated by the recording start position information of the first recording medium recorded on the second recording medium in association with the selected search image. A video camera comprising cue / reproducing means for performing cue / reproduction from the position of the medium, wherein dubbing recording is performed on a third recording medium,
Display means for displaying a list of the plurality of search images recorded on the second recording medium on a display unit;
Selection means for sequentially selecting the search images corresponding to the video signal to be dubbed recorded from among the plurality of search images displayed in a list on the display unit in the order of dubbing recording;
The first recording start position information of the first recording medium recorded on the second recording medium in association with the search image selected by the selection means is used as the dubbing start point, and the dubbing start point Subsequently, the selection unit selects that the position information immediately before the second recording start position information of the first recording medium recorded on the second recording medium is set as the dubbing end point. Dubbing section setting means for performing in order;
Dubbing reproduction means for searching and reproducing the dubbing section set by the dubbing section setting means of the first recording medium;
A video camera comprising: an external video recording device which receives as an input a video signal reproduced from the dubbing section of the first recording medium by the dubbing reproducing means and records it on the third recording medium. Further comprising special effect setting means for arbitrarily setting a special effect to one or both of the dubbing start point and the dubbing end point set by the dubbing section setting means, and the dubbing reproduction means, The special effect is applied to the reproduced video signal near the dubbing start point or the dubbing end point to which the special effect is set by the special effect setting means, and the resultant is output to the external video recording device. The video camera according to claim 1.

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