JPH0937142A - Imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable hand shake correction by effectively avoiding picture quality degradation by performing the hand shake correction while using an imaging device which has the excessive number of lines in comparison with the number of vertical lines in a standard video signal. SOLUTION: At a video tape recorder 1 with integrated camera, picture quality is more improved by improving horizontal resolution in a normal mode while effectively utilizing the excessive number of horizontal picture elements composed of the difference between a reduced area AR2 and an effective area AR1 In a hand shake correction made, image pickup signals SR, SG and SB are kept similar but CC solid-state imaging devices SR, SG and SB are generated from the effective area AR1 composed of 948 picture elements ×647 of lines of CCD solid-state imaging devices 6R, 6G and 6B and converted to digital chrominance signals and a video signal SV is generated by segmenting 711 picture elements × 485 lines corresponding to the redued area AR2 from the digital chrominance signals while using converters 26 and 28. Concerning the image pickup signals SR, SG and SB, timing for outputting from the devices 6R-6B is changed so that hand shake detected by sensors 20 and 21 can be supported and oppositely, by segmenting the area at the fixed timing while using the converters 26 and 28, the position of the area AR2 is varied so that the hand shake can be corrected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an imaging device,
For example, in a camera-integrated video tape recorder for business use, by using an image sensor having an extra line number as compared with the vertical line number of a standard video signal, image quality deterioration is effectively avoided and image stabilization is performed. To be able to.

[0002]

2. Description of the Related Art Conventionally, in a video tape recorder with a built-in camera for business use, three image pickup devices are arranged so as to be shifted by 1/2 pixel so as to give the highest priority to image quality, and the effectiveness of these three image pickup devices is improved. The number of pixels is used without omission, whereby a video signal with a horizontal resolution of about 700 is obtained.

On the other hand, in a camera-integrated video tape recorder used by general users, a so-called single-plate type image pickup element is used in order to reduce the overall size and give priority to usability. Image stabilization is performed by using a part of effective pixels.

That is, this type of camera shake correction includes a method of correcting a camera shake by an optical method and a method of electrically correcting the camera shake, and the method of electrically correcting the camera shake has a larger overall shape of the video tape recorder with a built-in camera. It can be miniaturized. Further, in this method of electrically correcting, the image pickup result of a partial area is selectively fetched from the image pickup result of the image pickup element and converted into a video signal directly from the image pickup element or via a frame memory. The camera shake is corrected by displacing the area according to the camera shake.

[0005]

[Problems to be Solved by the Invention] By the way, a camera-integrated video tape recorder for professional use is
By being able to perform so-called one-man operation,
It is designed to be used in the field of news reports such as incident scenes, and in community-based interview sites. In such an interview site, quick and reliable camera operation is required.
Especially at the scene of an incident, there are cases where it is necessary to shoot from a long distance, and in this case, there are times when there is not enough time to prepare a camera tripod or the like.

As a result, even in a video camera recorder with a built-in camera for business use, if the functions such as camera shake correction and auto focus can be incorporated like the video tape recorder with a built-in camera used by general users, this kind of data collection is possible. It is considered to be convenient because it can capture a definitive image clearly and reliably on site.

However, in this type of image stabilization,
There is a problem that resolution deterioration is unavoidable by selectively capturing the imaging result of a partial area from the imaging result of the imaging device and converting it into a video signal.

The present invention has been made in consideration of the above points, and it is an object of the present invention to propose an image pickup apparatus capable of effectively avoiding image quality deterioration and correcting camera shake.

[0009]

In order to solve such a problem, the present invention is applied to an image pickup apparatus which processes an image pickup result obtained from an image pickup device and outputs a video signal of a prescribed format. In this image pickup apparatus, the preceding image pickup device has an extra number of lines in comparison with the number of vertical lines corresponding to the number of vertical lines of the video signal of the specified format.

Further, at this time, an image conversion means for taking in an image pickup result having an extra line number than the preceding image pickup element and converting the taken image pickup result into a video signal of the above specified format is provided. .

Instead of this, the operation mode switching means for switching the entire operation mode between the first and second operation modes, and the magnification of the first and second operation modes by changing the magnification are used. And an imaging magnification variable optical system that forms an image of a subject on the imaging surface of the imaging device, and captures an imaging result having an extra number of lines from the imaging device in the first operation mode, and acquires the imaging result first. Converts to a video signal of the specified format and outputs it, and in the second operation mode, selectively captures the imaging result of the specified area corresponding to the number of vertical lines of the video signal of the specified format from the imaging surface of the previous image sensor. , Outputting the image pickup result of the fetched specified area by a video signal of the above specified format, and the variable imaging magnification optical system, when the first and second operation modes are switched, The video signal formats, so as to vary the magnification so that the size of the object is not changed.

Further, at this time, a displacement detecting means for detecting the displacement of the entire apparatus is provided, and in the second operation mode, the prescribed region is changed based on the detection result of the displacement detecting means. The vibration of the subject in the video signal due to the entire displacement is corrected.

The above means is applied to an image pickup apparatus for processing an image pickup result obtained from an image pickup device and outputting a video signal of a specified format, and the number of lines corresponding to the number of vertical lines of the video signal of the specified format is increased. Then, if the image pickup device has an extra line number, camera shake correction can be performed using an area obtained by subtracting the extra line number.

Further, at this time, an image conversion means for taking in the image pickup result having an extra line number from the preceding image pickup element and converting the taken image pickup result into a video signal of the above prescribed format may be provided. For example, horizontal resolution can be improved by effectively utilizing pixels in the horizontal direction corresponding to the extra number of lines.

Alternatively, when switching the entire operation mode between the first and second operation modes, in the first operation mode, an image pickup result having an extra line number from the image pickup element is fetched. , The image pickup result is converted into a video signal of the specified format and output, and in the second operation mode, a specified area corresponding to the number of vertical lines of the specified format video signal is detected from the imaging surface of the image pickup element. The imaging result is selectively captured, the captured imaging result of the specified region is output as a video signal of the above specified format, and when the imaging magnification variable optical system switches between the first and second operation modes, In the video signal of the specified format, if the magnification is changed so that the size of the subject does not change, the change of the shooting angle of view due to the switching of this operation mode is effectively avoided. Door can be.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a block diagram showing a camera section of a camera-integrated video tape recorder according to a first embodiment of the present invention. The camera-integrated video tape recorder 1 captures an image of a desired subject by the camera unit and records the resulting video signal SV in the video tape recorder unit.

That is, the camera-integrated video tape recorder 1 picks up an image of a desired subject by the optical block 3 via the lens 2 held in an exchangeable manner, and the image pickup signals SR, SG, SB which are the image pickup results are continued. The NTSC system video signal SV is generated by processing in the system.

Here, the optical block 3 is held by a set frame 4 which forms the housing of the camera-integrated video tape recorder, and as shown in FIG. 2, the light emitted from the lens 2 is emitted in red, green and blue. It is formed by a dichroic prism 5 for decomposing incident light LR, LG, LB, and CCD solid-state image pickup devices 6R, 6G, 6B for respectively receiving the red, green, and blue incident light LR, LG, LB. ing.

Here, these CCD solid-state image pickup devices 6R, 6
G and 6B have the same configuration as the CCD solid-state image pickup device applied to the single-plate type camera-integrated video tape recorder, except that the color filter is not arranged on the image pickup surface, and as shown in FIG. The number of horizontal pixels and the number of vertical lines are 1016 pixels and 674 pixels respectively (total number of pixels is about 680)
(000 pixels). Also, an effective area is set to fill the image frame, and the number of horizontal pixels and the number of vertical lines in this effective area are 962 pixels and 65 pixels, respectively.
The number can be set to four (the number of effective pixels is about 630,000 pixels).

In the case of this embodiment, the CCD solid-state image pickup devices 6R, 6G and 6B have 948 pixels and 647 regions defined in the effective area AR1 in the horizontal and vertical directions, respectively, and the effective area AR1 is imaged. It is adapted to be driven by the drive circuits 8R, 8G and 8B so as to output the result.

Further, the CCD solid state image pickup device 6R,
In 6G and 6B, the effective number of lines 485 corresponding to the number of vertical lines of the NTSC video signal SV is vertically selected, and an area for forming an angle of view of 4: 3 with respect to the number of vertical lines (hereinafter A reduction area AR2) is set substantially at the center of the effective area AR1 so that an extra effective area AR1 of about 33 [%] can be secured in the vertical and horizontal directions. The number of horizontal pixels is 711 pixels which can ensure a sufficient horizontal resolution. In this reduced area AR2, about 350,000 effective pixels can be secured.

Thus, in the camera-integrated video tape recorder 1, the video signal SV is generated from the effective area AR1 in the normal mode in which the image stabilization is not performed. On the other hand, in the camera shake correction mode, the imaging result of the reduced area AR2 is cut out from the imaging result of the effective area AR1 at a specified timing to generate the video signal SV, and the timing of the imaging result obtained from the effective area AR1 at this time. By changing
The position of the reduction area AR2 is varied on the effective area AR1 to correct the camera shake.

Further, CCD solid-state image pickup devices 6R, 6G, 6
B is a red and blue CCD solid-state image pickup device 6R and 6B.
On the other hand, the green CCD solid-state image pickup device 6G is horizontally displaced by a 1/2 pixel pitch, so that in the camera-integrated video tape recorder 1, a so-called 1/2 is formed.
The pixel shift method is applied to improve the horizontal resolution.

The drive circuits 8R, 8G, 8B generate drive signals based on the reference signal output from the signal generator (SG) 9, and drive the CCD solid-state image pickup devices 6R, 6G, 6B by the drive signals.

At this time, the drive circuits 8R, 8G, and 8B operate on the basis of the control signal SC output from the central processing unit 10 when the operation mode of the camera-integrated video tape recorder 1 is set to the image stabilization mode. The timing of the drive signal is varied, whereby the timing of the imaging result obtained from the effective area AR1 is varied so as to correspond to the control signal SC. As a result, the drive circuits 8R, 8G, and 8B are coupled with signal processing (which is performed by the H rate converter 26 and the V rate converter 28) that cuts out the imaging result of the reduction area AR2 from the imaging result at the specified timing, together with the reduction area AR2. The position of can be changed according to the control signal SC.

As a result, in the camera-integrated video tape recorder 1, the number of effective lines corresponding to the number of vertical lines of the NTSC system video signal SV and the reduction area AR2 having a sufficient number of pixels in the horizontal direction are applied to the video signal SV. Is generated, and the position of the reduced area AR2 having sufficient areas in the upper, lower, left, and right directions is varied to perform camera shake correction, and image quality deterioration during camera shake correction is effectively avoided by that much. There is.

Further, in the camera-integrated video tape recorder 1, in the normal mode, the effective area AR1 is generated by generating the video signal SV from the effective area AR1.
The image quality is further improved as compared with the case where camera shake correction is performed by effectively utilizing the extra pixel of 1.

By the way, when the reduced area AR2 and the effective area AR1 are switched and imaged in the camera shake correction mode and the normal mode in this way, the magnification of the imaged result changes accordingly. That is, in this case, the viewing angle formed by projecting the reduced area AR2 and the effective area AR1 in the image space changes. In this case, it may happen that the image pickup result cannot be obtained at the angle of view intended by the cameraman. In addition, at the scene of an incident, it may be possible to switch the operation mode during shooting. In this case, the angle of view of the image pickup result changes abruptly, giving a feeling of strangeness.

Specifically, when a landscape as shown in FIG. 4 is photographed, this landscape is captured by each CCD as shown in FIG.
An image is formed on the image pickup surfaces of the solid-state image pickup devices 6R, 6G, and 6B (FIG. 5A), and in the normal mode, the effective area AR
The image of No. 1 is recorded as the image pickup result (see FIG. 5).
(B)). When the camera shake correction mode is switched to in this state, the image of the reduced area AR2 is recorded as an image pickup result (FIG. 5C), and only the magnification determined by the size of the reduced area AR2 and the effective area AR1 is changed. Therefore, the angle of view is expanded.

On the other hand, as shown in FIG. 6, in contrast to this, in the camera shake correction mode, the image of the reduced area AR2 is recorded as the image pickup result (FIG. 6A).
And (B)), when the mode is switched to the normal mode in this state, the image of the effective area AR1 is recorded as the captured result (FIG. 6C), and the size of the reduced area AR2 and the effective area AR1 is changed. The angle of view is instantaneously reduced by the determined magnification.

Therefore, in this embodiment, the magnification of the lens 2 is switched in association with this mode switching, thereby effectively avoiding a change in the angle of view and eliminating this kind of discomfort.

That is, the lens 2 is formed by a zoom lens, and while monitoring the position of the variable magnification lens 14 held in the lens barrel by the lens position detecting means 13, the driving mechanism 15 is driven by a prescribed driving signal. By moving the position of the variable magnification lens 14 back and forth, the magnification can be freely changed within a specified range.

The lens control circuit 17 is responsive to the operation of the zoom / wide switch 18 to operate the lens position detecting means 13.
A predetermined drive signal is output to the drive circuit 19 while monitoring the detection result of 1., and the drive circuit 19 drives the drive mechanism 15 by this drive signal to move the position of the variable magnification lens 14 back and forth. Accordingly, the lens control circuit 17 forms a feedback loop, and the zoom / wide switch 1
The variable magnification lens 14
The position of is moved to change the magnification of the lens 2.

Further, the lens control circuit 17 is the same when the operation mode of the camera-integrated video tape recorder 1 is switched from the normal mode to the image stabilization mode based on the mode setting signal SM input from the central processing unit 10. While monitoring the detection result of the lens position detecting means 13, the drive circuit 19 outputs a prescribed drive signal,
This moves the position of the variable magnification lens 14 to reduce the magnification of the lens 2 to 3/4.

Thus, in the camera-integrated video tape recorder 1, when the normal mode is switched to the image stabilization mode (FIGS. 5A and 5D), the reduced area AR2 of the CCD solid-state image pickup devices 6R, 6G, 6B is displayed. Image 3 /
The size of the subject is reduced to 4 and the subject is imaged with the same angle of view as before the mode switching (FIG. 5E).

Further, on the contrary, when the operation mode of the camera-integrated video tape recorder 1 is switched from the camera shake correction mode to the normal mode on the basis of the mode setting signal SM, the lens control circuit 17 similarly changes the variable magnification. The position of the lens 14 is moved to enlarge the magnification of the lens 2 to 4/3 times.

As a result, in the camera-integrated video tape recorder 1, when the camera shake correction mode is switched to the normal mode (FIGS. 6A and 6D), the effective area AR1 of the CCD solid-state image pickup devices 6R, 6G, 6B is changed. Image 4 /
3 is enlarged, and the object is imaged with the same angle of view as before the mode switching even after the mode switching (FIG. 6E).

The sensor 20 is formed of an angular velocity sensor for detecting the acceleration in the yawing and panning directions, and is fixed and held on the set frame 4. On the other hand, the sensor 21 is formed by an angular velocity sensor that detects acceleration in the pitching and tilting directions, and is similarly fixed and held on the set frame 4.

The central processing unit 10 controls the overall operation of the camera-integrated video tape recorder 1 by executing a prescribed processing procedure, and the camera shake correction switch 22
The mode setting signal SM is output in response to the pressing operation of, and thereby the operation mode of the camera-integrated video tape recorder 1 is alternately switched between the normal mode and the image stabilization mode.

Further, in the camera shake correction mode, the central processing unit 10 detects the displacement of the image in the reduced area AR2 due to the vibration of the camera-integrated video tape recorder 1 from the detection results of the sensors 20 and 21, and detects this displacement. The control signal SC is output to the drive circuits 8R, 8G, and 8B so as to perform the correction, and the camera shake is corrected by this.

Correlated double sampling circuit (CDS) 24
After amplifying the image pickup signals SR, SG, SB output from the CCD solid-state image pickup devices 6R, 6G, 6B with a specified gain,
The correlated double sampling technique is applied to convert the color signals R, G, and B of red, green, and blue. The analog-digital conversion circuit (A / D) 25 performs analog-digital conversion processing on each color signal R, G, B to obtain a color signal R,
G and B are converted into digital color signals and output.

The H rate converter 26 is formed of a memory circuit which stores sequentially input digital color signals and outputs the digital color signals at a specified timing, and switches the operation according to the mode setting signal SM. That is, the H rate converter 26
Is the effective area A when the operation mode of the camera-integrated video tape recorder 1 is set to the image stabilization mode.
A digital color signal of 711 pixels corresponding to the reduction area AR2 is selected from the digital color signal of 948 horizontal pixels of R1 and time-axis expanded and output. As a result, the H rate converter 26
The reduced area AR2 is cut out from the digital color signal formed by the effective area AR1, and even if the 1/2 pixel is not shifted during camera shake correction, the horizontal pixel number of about 13.5 [MHz] corresponding to 711 pixels in the horizontal direction is obtained. It is designed to secure. Actually, by shifting by 1/2 pixel, in this embodiment, the horizontal resolution becomes about 700 when the camera shake is corrected, and it is possible to sufficiently secure the horizontal resolution that can be used for the broadcasting station. .

On the other hand, the H rate converter 26
When the operation mode of the camera-integrated video tape recorder 1 is set to the normal mode, the effective area AR
A digital color signal corresponding to 1 horizontal 948 pixels is output as it is. As a result, the camera-integrated video tape recorder 1 ensures a horizontal pixel number of about 18 [MHz] corresponding to 948 pixels in the horizontal direction in the normal mode even when the pixel is not shifted by 1/2 pixel. Actually, the horizontal resolution is about 850 lines in this embodiment by shifting by 1/2 pixel.

The V rate converter 28 is formed of a memory circuit which stores digital color signals which are sequentially input in the same manner and outputs the digital color signals at a specified timing, and a mode setting signal SM.
The operation is switched according to. That is, when the operation mode of the camera-integrated video tape recorder 1 is set to the image stabilization mode, the V rate converter 26 corresponds to the reduced area AR2 from the digital color signal corresponding to the number of lines 647 in the effective area AR1 485. The digital color signal of the line is selected and the time axis is expanded and output. As a result, the V rate converter 28 cuts out the reduced area AR2 from the digital color signal formed by the effective area AR1 and outputs it in the vertical direction.

On the other hand, the V rate converter 28
When the operation mode of the camera-integrated videotape recorder 1 is set to the normal mode, the digital color signal of one line is thinned out every four lines and the timing is corrected and output, whereby 647 digital colors are output. The number of signal lines is converted to 485 and output.

As a result, in the camera-integrated video tape recorder 1, the extra pixel number in the horizontal direction, which is the difference between the reduced area AR2 and the effective area AR1, is effectively used to improve the horizontal resolution in the normal mode, and to further improve. It is designed to improve image quality.

Thus, each digital color signal is corrected by the H rate converter 26 and the V rate converter 28 into the number of lines and the video period corresponding to the video signal SV,
The video signal processing circuit 29 performs signal processing such as gamma correction and knee correction required for a normal television camera on each digital color signal, converts the signal to a luminance signal and a color difference signal, and then a video signal. Convert to SV and output.

In the above structure, the incident light of the lens 2 is decomposed by the dichroic prism 5 into incident lights LR, LG and LB of red, green and blue, and then each incident light L.
R, LG and LB are CCD solid-state image pickup devices 6R and 6 respectively.
It is condensed on the image pickup surfaces of G and 6B, photoelectrically converted, and converted into image pickup signals SR, SG and SB.

The image pickup signals SR, SG and SB are converted into color signals R, G and B by the correlated double sampling circuit 24, and then converted into digital color signals by the subsequent analog-digital conversion circuit 25, and the subsequent H rate. The converter 26 and the V rate converter 28 perform prescribed signal processing, and the subsequent video signal processing circuit 29 corrects gamma and the like and converts it into a video signal SV.

In this series of processing, in the normal mode, the image pickup signals SR, SG, SB are generated from the 948 effective pixels AR1 of 948 pixels of the CCD solid-state image pickup devices 6R, 6G, 6B, and are generated by the V rate converter 28. The number of lines of the digital color signal is thinned out and converted into a digital color signal of 948 pixels × 485 lines, and a video signal SV is generated from this digital color signal. Thus, in the normal mode, the high resolution video signal S
V is generated.

On the other hand, in the image stabilization mode,
Similarly, the image pickup signals SR, SG and SB are generated from the 948 pixels × 647 effective areas AR1 of the CCD solid-state image pickup devices 6R, 6G and 6B and converted into digital color signals.
The H rate converter 26 and the V rate converter 28 cut out 711 pixels × 485 pixels corresponding to the reduced area AR2 from the digital color signal, and a video signal SV is generated from the cut out digital color signal.
As a result, even in the image stabilization mode,
11 pixels can be secured, and the deterioration of resolution is effectively avoided.

Further, in this camera shake correction mode, the image pickup signals SR, SG and SB are arranged so that the CCD solid-state image pickup device 6 can compensate the camera shake detected by the sensors 20 and 21.
The timing output from the R, 6G, and 6B changes, and the H rate converter 26 and the V rate converter 28 cut out the changed timing at a constant timing, so that the position of the reduction area AR2 is changed and camera shake occurs. Will be corrected.

On the other hand, when the operation mode is switched from the camera shake correction mode to the normal mode and the video signal SV generated from the reduction area AR2 is generated from the effective area AR1, the lens control is performed in conjunction with this. The circuit 17 increases the magnification of the lens 2 to 4/3, whereby the image formed in the reduction area AR2 in the image stabilization mode is enlarged and formed in the effective area AR1, and the variation in the angle of view is effectively avoided. It

On the contrary, the operation mode is switched from the normal mode to the image stabilization mode, and the effective area AR
The video signal SV generated from 1 is reduced area AR2
Then, in conjunction with this, the lens control circuit 17 reduces the magnification of the lens 2 to 3/4,
As a result, the image formed in the effective area AR1 in the normal mode is reduced and formed in the reduced area AR2, and the variation in the angle of view is effectively avoided.

According to the above-mentioned structure, the shake correction is performed by using the image pickup device having the number of extra lines and the number of pixels corresponding to the number of lines corresponding to the number of vertical lines of the video signal. By doing so, it is possible to effectively avoid image quality deterioration during camera shake correction.

Further, in the normal mode, since the video signal SV is generated by the effective area AR1 formed by the extra pixels corresponding to the extra number of lines, the extra pixels are effectively used to take a further step. The image quality can be improved.

By switching the magnification of the lens 2 when switching between the normal mode and the image stabilization mode, it is possible to effectively avoid the change in the angle of view due to the switching of the operation mode, and it is possible to obtain a comfortable image. it can.

In the above embodiment, the case where the sensors 20 and 21 detect acceleration to detect camera shake is described, but the present invention is not limited to this. Various camera shake detection methods can be widely applied.

Further, in the above embodiment, CC
Although the case has been described in which the timing of the D solid-state image sensor is controlled to perform the image stabilization, the present invention is not limited to this, and the image stabilization may be performed by changing the timing of cutting out the reduced area by the H rate converter and the V rate converter. Alternatively, the image stabilization may be performed by temporarily storing the image data in the frame memory and reading the image data.

Further, in the above-mentioned embodiments, the case where the video signal of the NTSC system is generated from the image pickup result is described, but the present invention is not limited to this, and various standard video signals such as the PAL system are obtained from the image pickup result. It can be widely applied when generating.

Further, in the above-mentioned embodiment, the case where the present invention is applied to the three-plate type camera-integrated video tape recorder has been described. However, the present invention is not limited to this, and a single-plate type, two-plate type, four-plate type, etc. When it is applied to the camera-integrated video tape recorder, it can be widely applied not only to the camera-integrated video tape recorder but also to an imaging device such as a camera head unit.

[0063]

As described above, according to the present invention, image stabilization is effectively performed by performing image stabilization by using an image pickup device having an extra line number as compared with the vertical line number of a standard video signal. The camera shake can be corrected by avoiding it. When the image stabilization is not performed, a video signal is generated by the area having the extra line number, and the extra line number can be effectively used to improve the image quality. Furthermore, by changing the magnification of the lens system at the time of switching the operation mode, it is possible to effectively avoid a change in the angle of view due to the switching of the operation mode.

[Brief description of drawings]

FIG. 1 is a block diagram showing a video tape recorder integrated with a camera according to a first embodiment of the present invention.

2 is a side view showing an optical block of the camera-integrated video tape recorder shown in FIG. 1. FIG.

[FIG. 3] C of the camera-integrated video tape recorder of FIG.
It is an approximate line figure showing the image pick-up side of a CD solid-state image sensing device.

FIG. 4 is a schematic diagram showing an example of a subject in the camera-integrated video tape recorder of FIG.

5 is a schematic diagram showing a result of imaging the subject of FIG. 4 when switching the operation from the normal mode to the image stabilization mode.

FIG. 6 is a schematic diagram showing a result of capturing an image of the subject in FIG. 4 when the operation is switched from the camera shake correction mode to the normal mode.

[Explanation of symbols]

1 Camera-integrated video tape recorder 2 Lens 3 Optical block 6R, 6G, 6B CCD solid-state image sensor 10 Central processing unit 14 Variable magnification lens 17 Lens control circuit 20, 21 Sensor 26 H rate converter 28 V rate converter

Claims (4)

[Claims] 1. An image pickup apparatus for processing an image pickup result obtained from an image pickup device to output a video signal of a specified format, wherein the image pickup is performed in comparison with the number of vertical lines of the video signal of the specified format. An image pickup device, wherein an element has an extra number of lines. 2. An image conversion means for capturing an imaging result having the extra number of lines from the imaging element and converting the captured imaging result into a video signal of the specified format. The image pickup apparatus according to claim 1. 3. An operation mode switching means for switching the entire operation mode between a first operation mode and a second operation mode, and in the first operation mode and the second operation mode, a magnification is varied to obtain an object on an imaging surface of the imaging device. And an imaging magnification variable optical system for forming an image of the image, and in the first operation mode, captures an imaging result having the extra line number from the imaging device, and acquires the imaging result in the prescribed format. Converting into a video signal and outputting, and in the second operation mode, selectively captures an imaging result of a specified area corresponding to the number of vertical lines of the video signal of the specified format from the imaging surface of the imaging device, The captured imaging result of the specified area is output as a video signal of the specified format, and the variable imaging magnification optical system is used when switching between the first and second operation modes. In the video signal of the prescribed format, the image pickup apparatus according to claim 1, characterized in that to vary the magnification so that the size of the object is not changed. 4. Displacement detection means for detecting the displacement of the entire apparatus is provided, wherein in the second operation mode, the prescribed region is varied based on the detection result of the displacement detection means, and the displacement of the entire apparatus is changed. The image pickup apparatus according to claim 3, wherein vibration of a subject in the video signal is corrected.