JP3554584B2 - Integrated video camera and playback device for recording still and moving images - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to an integrated video camera and a reproducing apparatus for recording a still image and a moving image, and is particularly useful when a still image having a high image quality relative to a moving image is obtained.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an integrated video camera capable of recording and reproducing a still image and a moving image has been proposed. As an example of this type of integrated video camera, there is a camera in which a still image is divided and recorded in a PCM area of an 8 mm video format. The recording in this case is to record 525 signals each having a scanning line in the moving image and still image areas.
[0003]
[Problems to be solved by the invention]
In the prior art as described above, the same image pickup device as that for a moving image is used even for a still image. That is, the number of pixels for a still image is small, and as a result, a still image with a very low image quality cannot be obtained.
[0004]
On the other hand, even if an image sensor having a larger number of pixels is used, improvement in image quality cannot be expected unless the specifications of the entire recording system are changed. This is because the number of inspection lines in the NTSC system is 525, and the number of pixels is almost determined by this number.
[0005]
The present invention has been made in view of the above-described conventional technology, and a moving image is recorded with approximately the same number of pixels as a conventional one, and a still image having a higher image quality than a moving image can be obtained without changing the specifications of the conventional recording method. It is an object of the present invention to provide an integrated video camera and a playback device for recording images and moving images.
[0006]
[Means for Solving the Problems]
The structure of the first invention for achieving the above object is as follows.
High-pixel imaging means for converting an image formed through an optical system into image information which is an electric signal,
A storage unit for temporarily storing image information which is an output signal of the imaging unit, reading the image information, and sending the image information to a magnetic recording system;
A magnetic recording system for magnetically recording the image information transmitted by the storage means on a recording medium,
An image mode selecting means for selecting one of a still image mode and a moving image mode,
When the image mode selection means selects the still image mode, all of the image information sent by the imaging means is made to correspond to a plurality of tracks of the recording medium and is divided into one track for each recording medium. On the other hand, when the image mode selection means selects the moving image mode, the storage means selects a part of the image information sent by the imaging means and reads it in correspondence with one track of the recording medium. And control means for controlling.
[0007]
The configuration of the second invention is as follows.
In the above still image and moving image reproducing apparatus, a still image is divided into a plurality of tracks of a recording medium and one still image is magnetically recorded, and a moving image assigned to each track of the recording medium is magnetically recorded.
Having an image mode selection means for selecting either the still image mode or the moving image mode,
When the still image mode is selected by the image mode selection means, the reproduced signal is temporarily stored in the storage means, the divided and recorded still image information is assembled into one piece of still image information, displayed on the display means, and the image mode selection is performed. When the moving image mode is selected by the means, the reproduction signal is temporarily stored in the storage means or displayed directly on the display means.
[0008]
[Action]
According to the first aspect of the present invention, in the still image mode, the image information reflecting the number of pixels of the high-pixel imaging means is divided into a plurality of tracks on the recording medium and recorded, while in the moving image mode, the image information is recorded. The image information equivalent to the image information of the imaging means having a smaller number of pixels than that of the means is allocated to one track of the recording medium and recorded.
[0009]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The integrated video camera according to the present embodiment is a video camera having a recording / reproducing function.
[0010]
As shown in FIG. 1, an image sensor 1 is an image sensor (CCD) of a general NTSC integrated video camera that converts an image formed through an optical system 2 such as a lens into image information as an electric signal. ) Is an image sensor having a higher number of pixels than the number of pixels. The storage means comprises a buffer memory 3 and a display memory 4. The buffer memory 3 temporarily stores image information obtained by converting an output signal of the image sensor 1 into a digital signal by an A / D converter 6 based on a synchronization signal generated by a synchronization signal generator 5. . The display memory 4 reads the contents stored in the buffer memory 3 in synchronization with the digitization of the image information in the A / D converter 6 based on the synchronizing signal generated by the synchronizing signal generator 5, and stores this. .
[0011]
The operation panel 7 is provided with operation switches for selecting various functions of the integrated video camera. One of these operation switches is an image mode selection switch 7a. The image mode selection switch 7a selects either the moving image mode or the still image mode of the integrated video camera, and sends a mode signal indicating the mode selected by the image mode selection switch 7a to the system controller 8. .
[0012]
The system controller 8 controls the overall control of the integrated video camera. That is, the system controller 8 controls the buffer memory 3 and the display memory 4 together with the control of the magnetic recording / reproducing system.
[0013]
More specifically, in the still image mode, all the pixels of the image information corresponding to one image stored in the display memory 4 are read, and this reading is performed by recording the one image. All pixels are equally divided so as to be divided into a plurality of tracks of the existing standard of a magnetic tape as a medium and magnetically recorded.
[0014]
On the other hand, in the moving image mode, a part of the image information corresponding to one image stored in the display memory 4 is read, and this reading is performed according to the existing standard of the magnetic tape. All pixels are regularly thinned out and recorded so as to be assigned to tracks.
[0015]
The magnetic recording / reproducing system 9 is the same as the existing magnetic recording / reproducing system deck 10, the magnetic recording / reproducing processing unit 11, the recording / reproducing servo unit 12, and the D / A / A / D conversion unit 13. Become.
[0016]
The magnetic recording / reproducing mechanical deck 10 includes a rotating drum on which a magnetic head is mounted, a tape driving system such as a capstan roll, a mechanism for ejecting and loading a magnetic tape, and the like. -The reproduction servo unit 12 is controlled to operate as specified.
[0017]
The magnetic recording / reproducing processing unit 11 FM-modulates an analog signal output from the D / A / A / D converter 13 and supplies the analog signal to the magnetic head, and demodulates an FM signal read by the magnetic head. This is the part that performs processing.
[0018]
The display monitor section 14 is a section for reproducing the image information read by the magnetic head as a screen. That is, the image information subjected to reproduction processing by the magnetic recording / reproduction processing unit 11 and demodulated as an analog signal is converted into a digital signal by the D / A / A / D conversion unit 13 and stored in the display memory 4. However, in the case of the still image mode, information of a plurality of tracks corresponding to one screen is stored in the display memory 4, and the high-quality still images of the plurality of tracks are displayed on the display monitor via the display processing unit 15. It is displayed on the unit 14.
[0019]
On the other hand, in the case of the moving image mode, information of one track corresponding to one screen is stored in the display memory 4, and the same image quality of one track is obtained via the display processing unit 15. The moving image is displayed on the display monitor 14.
[0020]
The still image in the still image mode can be printed out by the printing device 16 or transmitted by the transmission device 17.
[0021]
The system controller 8 also controls the display memory 4 at the time of reproduction as described above.
[0022]
Note that, at the time of reproducing a moving image, an output signal of the magnetic recording / reproduction processing unit 11 may be directly supplied to the display processing unit 15.
[0023]
In the above embodiment, when the still image mode is selected by the image mode selection switch 7a, all of the image information stored in the display memory 4 corresponding to the number of pixels of the image sensor 1 is stored in a plurality of tracks as still image information. Recorded separately.
[0024]
FIG. 2 is an explanatory diagram conceptually showing the recording signal at this time. As shown in the figure, this example is a case where the image is divided into eight tracks, and as shown in FIG. 3, a case where one screen is formed by 1024 scanning lines by allocating 128 scanning lines per track. is there.
[0025]
On the other hand, when the still image mode is selected by the image mode selection switch 7a, a part of the image information stored in the display memory 4 is replaced with the moving image by regularly thinning out the image information as in the still image mode. Information is allocated to one track and recorded.
[0026]
At the time of reproduction, in the moving image mode, a moving image having the same image quality as an existing moving image is reproduced, and in the still image mode, information divided and recorded on a plurality of tracks is assembled to reproduce a high quality still image.
[0027]
【The invention's effect】
As described above in detail with the embodiments, according to the present invention, a still image is recorded while being divided into a plurality of tracks on a recording medium as high-quality image information corresponding to the number of pixels of a high-pixel imaging unit. The moving image is recorded on one track of the recording medium as image information having an image quality equivalent to the image quality obtained by an image sensor having a smaller number of pixels than the above-mentioned number of pixels. At the same time, a still image of higher image quality can be recorded.
[0028]
Therefore, the reproduction of the still image and the moving image recorded as described above can be performed without changing the existing specification, and the still image obtained by the reproduction has high image quality.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an embodiment of the present invention.
FIG. 2 is an explanatory diagram conceptually showing a recording signal in a still image mode in the embodiment.
FIG. 3 is an explanatory view conceptually showing a recording screen in a still image mode in the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Image sensor 3 Buffer memory 4 Display memory 7 Operation panel 7a Image mode selection switch 8 System controller 9 Magnetic recording / reproducing system

Claims (3)

High-pixel imaging means for converting an image formed through an optical system into image information which is an electric signal,
A storage unit for temporarily storing image information which is an output signal of the imaging unit, reading the image information, and sending the image information to a magnetic recording system;
A magnetic recording system for magnetically recording the image information transmitted by the storage means on a recording medium,
An image mode selecting means for selecting one of a still image mode and a moving image mode,
When the image mode selection means selects the still image mode, all of the image information sent by the imaging means is made to correspond to a plurality of tracks of the recording medium and is divided into one track for each recording medium. On the other hand, when the image mode selection means selects the moving image mode, the storage means selects a part of the image information sent by the image pickup means and reads it in correspondence with one track of the recording medium. An integrated video camera for recording a still image and a moving image, characterized by having control means for controlling. In the above still image and moving image reproducing apparatus, a still image is divided into a plurality of tracks on a recording medium and one still image is magnetically recorded, and a moving image allocated to each track of the recording medium is magnetically recorded.
Having an image mode selection means for selecting either the still image mode or the moving image mode,
When the still image mode is selected by the image mode selection means, the reproduced signal is temporarily stored in the storage means, the divided and recorded still image information is assembled into one piece of still image information, displayed on the display means, and the image mode selection is performed. A reproducing apparatus characterized in that when the moving image mode is selected by the means, the reproduction signal is temporarily stored in the storage means or is directly displayed on the display means. An integrated video camera for recording / reproducing still images and moving images, wherein the integrated video camera for recording still images and moving images described in [Claim 1] is equipped with the reproducing device described in [Claim 2]. camera.

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