JP2004096783A - Video camera device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video camera device capable of simultaneously recording a moving picture and a still image, and recording the clear still image during recording of the moving picture. <P>SOLUTION: In the combined type device in which an identical optical system 21 is shared, tape recording is performed in a recorder/reproducer 36, a disk recording is possible in a recorder/reproducer 102 , a plurality of frames of image data are once stored in a buffer memory 30, a timing change SW 7 is operated at a desired timing, the desired data are read out from the buffer memory 30, and the high-quality still image is recorded in a disk in the recorder/reproducer 102. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to a video camera device capable of performing both moving image shooting and still image shooting.

  Conventionally, for example, Japanese Patent Application Laid-Open No. 5-83625 (video camera capable of recording moving images and still images) is known as a device capable of recording moving images and still images.

  Furthermore, Japanese Patent Application Laid-Open No. 5-64133 (recording or reproducing apparatus) is known as one having an improved resolution. In this method, a still image is recorded while being divided into a plurality of frames (tracks).

  By the way, there is a case where it is desired to record a desired scene as a clear still image at the same time during moving image shooting or to check and record still images before and after the desired scene. The video camera was not satisfactory.

  Further, when capturing a still image, in a conventional imaging apparatus, a shutter is operated to capture a still image, but there is a time lag in accumulating electric charge in each element after opening the shutter, and in particular, there is a time lag. However, when the image change suddenly changes, the image flows and blurs.

  An object of the present invention is to provide a video camera device that satisfies the above-mentioned needs and eliminates the above-mentioned problems.

  A video camera device according to the present invention comprises the following means 1) to 3) in order to solve the above problems.

1) The imaging light coming from the same optical system is converted into an electric signal by a photoelectric conversion unit, and the converted signal is subjected to predetermined electric processing, so that a first recording medium for a moving image and a first recording medium for a still image are processed. A video camera device for recording on both recording media as image data,
Shutter means;
In accordance with a predetermined timing signal from the operation means, a storage means for storing the image data is provided,
A video camera, wherein the image data is continuously recorded on the second recording medium based on a timing by the shutter in a recording mode for recording on a first recording medium at a first recording timing. apparatus.
2) The imaging light coming from the same optical system is converted into an electric signal by a photoelectric conversion means, and the converted signal is subjected to predetermined electric processing, so that the first recording medium for a moving image and the second recording medium for a still image are processed. A video camera device for recording on both recording media as image data,
Display means for displaying image data on a monitor;
Shutter means;
In accordance with a predetermined timing signal from the operation means, a storage means for storing the image data is provided,
In a recording mode in which recording is performed on a first recording medium at a first recording timing, the image data is continuously recorded on the second recording medium based on a timing by the shutter, and the recorded still image is recorded. A video camera device wherein image data for use can be reproduced on the display means.

  According to the apparatus of the present invention, a moving image and a high-quality still image can be simultaneously recorded, and when a still image is recorded during recording of a moving image, real-time movement of a subject and confirmation on a display can be performed. A desired scene can be selected even if there is a deviation between the movement of the subject and the image of the subject actually recorded on the recording medium. Further, the still image can be stored in another medium, and the accessibility of the still image is improved.

  In addition, a moving image and a high-quality still image can be recorded simultaneously, and a clear image without blur can be obtained even when a high-speed subject is recorded as a still image.

  Further, there is an effect that a moving image and a still image can be recorded at different timings.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a schematic block diagram of a video camera device according to one embodiment.

  First, a block system related to moving image recording will be described.

  Reference numeral 21 denotes an optical system 21 including a plurality of lenses, and is configured to be detachable from a mount unit (not shown) so that the optical system 21 can be replaced with another optical system according to the imaging accuracy of a subject. The imaging light coming from here is supplied to a solid-state imaging device (CCD) 23 via a stop 22. The aperture 22 is controlled by an aperture control unit 37. The aperture control unit 37 determines an exposure by an automatic exposure (AE) circuit 27 based on a video signal obtained from a signal processing unit 26, which will be described later, and performs control based on this. It is supposed to be.

  In a shutter mode described later, a control signal is supplied to the aperture control unit 37 from the system controller 41 which has obtained the mode information.

  Next, the solid-state imaging device (CCD) 23 is driven by the CCD driving unit 8 so that the accumulated charges are transferred at a predetermined speed. The transfer speed is controlled by a system controller 41. The transferred signal is taken out as an image signal, amplified by an amplifier 24, and converted into a digital signal in an A / D converter 25.

  The A / D converter 25 is supplied with a clock from the clock generator 10 under the control of the system controller 41, whereby the A / D converter 25 is converted into a digital signal at a predetermined speed and the image is converted to a digital signal. The data is read. The cycle of this clock is different between the normal mode (normal moving image capturing mode) and the shutter mode described later.

  A frame memory 9 capable of storing, for example, two frames is connected to one of the output sides. The frame memory 9 is not used in the normal mode, and is read at a high speed in the shutter mode. Data is once taken in here.

  The signal processor 26 receives the image signal directly from the A / D converter 25 in the normal mode, and temporarily stores the image data stored in the frame memory 9 in the shutter mode. Is read out at a normal speed. If the incoming signals are R, G, B signals, known signal processing such as a luminance signal or a color difference signal is performed. It is stored at a predetermined address. The signal processing section 26 reads out the stored image data again, performs known signal processing such as white balance adjustment, and stores the data in the buffer memory 30 again.

  From one output of the signal processing unit 26, a video signal is supplied to an auto-focus (AF) circuit 28, where a high-frequency signal component is extracted and passed through a lens control unit 29 to the optical system 21. Can be performed. From the other output, a video signal for monitoring is supplied to the switch SW1, and a video signal is also supplied to the recording processing circuit 35.

  The buffer memory 30 sequentially stores, for example, data for five frames of the incoming image data. When image data of five frames or more is received, the data is sequentially rewritten with new data. For example, when the still image trigger SW2 is operated, a clock is generated from the synchronization generation circuit 31 and the timing is changed. The incoming image data is held.

  When the timing change SW 7 composed of an up / down switch is further operated, a clock is generated from the synchronizing signal generation circuit 31 in response to this operation, and the image data of 5 frames in the buffer memory 30 is output. Both are read out regardless of the order of arrival. The read image data is supplied to an encoder 101 of a still image circuit system to be described later, and is also supplied to the switch SW1.

  Next, the recording processing circuit 35 is a circuit for converting the incoming image data into an analog signal or performing known signal processing such as emphasis processing to process it into a normal video signal. On the other hand, the recording processing circuit 35 receives an audio signal via the MAC 3, the amplifier 32, the A / D conversion circuit 33, and the signal processing unit 34 in this order. The signal is supplied to the next-stage recording / reproducing device 36 and the output terminal 107 as a separate signal.

  The recording / reproducing device 36 is, for example, a device having a known configuration equipped with a rotary drum and capable of recording by mounting a tape cassette. Here, the reproduced signal is subjected to known processing such as de-emphasis in the reproduction processing circuit 100, and is supplied to the switch SW2. This switch SW2 is switched by the system controller 41 as needed.

  The above is the schematic configuration of the block system related to moving image recording.

  Next, a block system related to still image recording will be described.

  This block system is mainly composed of an output system from a buffer memory 30, and an output from the buffer memory 30 is connected to an encoder 101. The encoder 101 is, for example, an international standard system. This is a circuit for compressing still image data based on JPEG (Joint Photographic Coding Experts Group).

  The output is connected to a recording / reproducing device 102, which is, for example, a known, preferably 2.5-inch disk device capable of mounting and recording a floppy disk. A high-quality still image is recorded in a predetermined track area of a disc to be recorded.

  The decoder 103 subjects the signal reproduced from the recording / reproducing device 102 to a known restoration process such as predetermined decoding, and supplies the restoration data to the buffer memory 104. The output is connected to the switch SW1. The switch SW1 is also switched by the system controller 41, like the switch SW2. Alternatively, one of the outputs from the buffer memory 104 may be connected to a modem or the like.

  The above is a schematic block diagram of the still image recording system.

  Next, an embodiment of the present invention will be described in further detail by describing the operation of such a configuration. First, a case in which a desired still image is recorded on a disk while capturing a moving image will be described. In this case, first, the moving image trigger SW6 is operated. As a result, a control signal is supplied from the system controller 41 to the recording / reproducing device 3, and, for example, the recording / reproducing device 36 is operated, that is, the tape is moved from the mounted tape cassette to the peripheral surface of the rotating drum. It is pulled out to a known recording mode state. Similarly, the recording / reproducing device 102 is also in a standby state.

  On the other hand, a control signal is supplied to the CCD driving unit 8 and the clock unit 10 so as to set the transfer speed and the readout speed in a normal state.

  Thus, the imaging light that has entered through the optical system 21 is photoelectrically converted by the solid-state imaging device 23, extracted as an electric signal at a normal transfer speed, amplified by the amplifier 24, and then supplied to the A / D converter 25. Here, it is converted into a digital signal by a clock of a normal speed.

  In the case of this normal speed, the frame memory 9 is not used, but is supplied to the signal processing unit 26 as it is, and is subjected to the processing described above. At this time, the switch SW1 has been switched to the terminal b by the system controller 41, and the output signal is supplied to the display 105 to monitor the imaging state.

  From the other output of the signal processing unit 26, image data is supplied to the buffer memory 30. Here, the image data that has passed through the signal processing unit 26 and has been subjected to signal processing are sequentially stored. Is done. On the other hand, the image data is also supplied to a recording circuit 35, where it is subjected to the above-described signal processing, and together with the audio signal coming from the MIC 3, a magnetic tape in the recording / reproducing device 36 is provided. Is recorded as a moving image.

  The output of the signal processing unit 26 is connected to the output terminal 107 so that it can be connected to another display or a dubbing device.

  In the playback mode, when a mode switch (not shown) is operated, the terminal of the switching SW1 is switched to the a side, and the terminal of the switching SW2 is switched to the a side. The signal can be viewed on the display unit 105.

  By the way, when the desired scene can be confirmed on the display unit 105 and the still image trigger SW2 is operated during the above-described moving image shooting, operation information is supplied to the synchronization signal generation circuit 31, and the synchronization signal is generated at this timing. Generated. As a result, the specific image data of the incoming image data and the preceding and following image data are held in the buffer memory 30 in total of five sheets. At the same time, the system controller 41 switches the switching SW1 to the terminal a and the switching SW2 to the terminal b.

  In this state, the held specific still image is displayed on the display unit 105.

  Thereafter, when the timing change SW 7 is operated, the preceding and succeeding image data is read regardless of the time series according to the operation direction, that is, the up-down direction, and the image is confirmed on the display unit 105. And select one or all of them. As a result, those images are supplied to the encoder 101, and the selected image is supplied to the encoder 101 as a trigger by simultaneously pressing the up / down operation switches of the timing change SW 7, and is mounted on the recording / reproducing device 102. It is recorded as a high-quality still image on a disc.

  When this image is reproduced, when a mode switch (not shown) is operated, the switch SW1 is switched to the terminal c, and the still image temporarily restored in the buffer memory 104 after being restored by the decoder 103 is processed. It can be confirmed on the display unit 105.

  Therefore, in such a case, even when a desired scene comes in while shooting a moving image, the scene can be recorded as a high-quality still image simultaneously with the moving image recording.

  In particular, the timing change SW 7 enables the user to determine the image before and after a predetermined frame, and to determine the movement of the subject in real time, the movement of the subject confirmed on the display unit 105, and the actual recorded motion on the recording medium. According to such a function, a desired scene can be selected from a plurality of frames of image data even if there is a deviation from the image of a subject, and such a problem is solved. In the conventional device, a slight delay occurs in each circuit unit, and a slight shift occurs between the still image at the time of the shutter and the recorded still image. However, such a problem does not occur in the present device. .

  Next, the shutter mode will be described. The shutter mode is an effective mode in which a subject is in a high-speed moving state or a subject that may shift from a still state to a high-speed moving state is used during moving image shooting.

  For example, when the still image trigger SW1 is operated during moving image shooting, a control signal for opening the aperture 22 is supplied from the system controller 41 to the aperture control unit 37 via the AE circuit 27 at that timing.

  At the same time, a drive signal for high-speed transfer is supplied to the CCD driving unit 8, and the charge accumulated up to this point is canceled in the solid-state imaging device 23, and the image at that timing is accumulated. Then, the charge image is transferred from each charge element of the solid-state imaging device 23 within a short time, and is supplied to the A / D converter 25 through the amplifier 24 at the next stage.

  The A / D converter 25 is supplied with a clock synchronized with the CCD driving unit 8 from the clock generation unit 10, converts the clock into a high-speed digital signal based on the clock, and temporarily stores the image data in the frame memory 9. It is stored. At the same time, the already recorded image data is read out at a normal speed by the signal processing section 26, subjected to the same signal processing as described above, and processed in the buffer memory 30 and the recording processing circuit in the same manner as described above. 35, respectively. The still image subjected to the predetermined processing by the recording processing circuit 35 is recorded in the recording / reproducing device 36 continuously to the already recorded moving image.

  On the other hand, as the still image data stored in the buffer memory 30, a high-quality still image is recorded through the encoder 101. Further, when the timing change SW 7 is operated, a switch connected to the display unit 105 is switched, a desired still image is selected, and a high-quality still image is recorded in the same manner as described above.

  Therefore, according to the mode of this embodiment, the charge stored in the solid-state imaging device 23 is immediately canceled when the shutter mode is set, and the image is stored from this point on, and the digital image is stored at a speed corresponding to this. , The subject image moving at a high speed does not flow, and the image at the corner is not missed.

  Further, another embodiment of the above-described shutter mode will be described. In this embodiment, the CCD driving unit 8 and the clock unit 10 are always operated at high speed, and are processed by the signal processing unit 26 and the buffer memory 30. Since the operation is always performed at a high speed, the operation of the CCD driving unit 8 and the clock unit 10 is suspended. In this shutter mode, the data is written to the frame memory 9 in the above-described time zone immediately before the timing of the shutter (still image trigger SW1), and is transferred to the buffer memory 30 via the signal processing unit 26. Therefore, the still image data from the frame memory 9 is added to the moving image and subjected to signal processing. Therefore, a still image is recorded without affecting the moving image at all.

  Furthermore, four moving images are held before and after the shutter timing. These can be similarly recorded by reading out and confirming by the timing change SW7. In this case, the four image data from the moving image have less blur.

  In this manner, a moving image may be recorded as a continuous image in a strobe manner. In this case, in the recording mode on the first recording medium (tape), the stored image data is recorded on the second recording medium (disk) at a timing different from the recording timing on the first recording medium. Can be.

1 is a schematic block diagram of a video camera device according to one embodiment of the present invention.

Explanation of reference numerals

1,2 Still image trigger SW
6 Movie Trigger SW
7 Timing change SW
Reference Signs List 8 CCD drive unit 9 Frame memory 10 Clock generation unit 21 Optical system 22 Aperture 23 Solid-state imaging device 30 Buffer memory 31 Synchronization generation circuit 35 Recording processing circuit 36, 102 Recording / reproducing device 37 Aperture control unit 35 Recording processing circuit 36, 102 Recording / playback device 37 aperture control unit 100 playback processing circuit 101 encoder 103 decoder

Claims (2)

The imaging light received from the same optical system is converted into an electric signal by a photoelectric conversion unit, and the converted signal is subjected to predetermined electric processing, so that a first recording medium for a moving image and a second recording medium for a still image are processed. A dual-purpose video camera device that records each as image data on a recording medium,
Shutter means;
In accordance with a predetermined timing signal from the operation means, a storage means for storing the image data is provided,
A video camera, wherein the image data is continuously recorded on the second recording medium based on a timing by the shutter in a recording mode for recording on a first recording medium at a first recording timing. apparatus. The imaging light received from the same optical system is converted into an electric signal by a photoelectric conversion unit, and the converted signal is subjected to predetermined electric processing, so that a first recording medium for a moving image and a second recording medium for a still image are processed. A dual-purpose video camera device that records each as image data on a recording medium,
Display means for displaying image data on a monitor;
Shutter means;
In accordance with a predetermined timing signal from the operation means, a storage means for storing the image data is provided,
In a recording mode in which recording is performed on a first recording medium at a first recording timing, the image data is continuously recorded on the second recording medium based on a timing by the shutter, and the recorded still image is recorded. A video camera device wherein image data for use can be reproduced on the display means.

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