JPH0537846A - Picture recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain hand small movement correction processing at reproduction. CONSTITUTION:A zoom position data D1a a focus position data D2a an acceleration data D3a, a video data D4a and an audio data D5a are not subjected hand small movement correction processing at recording and the data are recorded in the state. In this case, the video data D4a and the audio data D5a are recorded on a main code recording area on one track of a magnetic tape 25, and the zoom position data D1a the focus position data D2a and the acceleration data D3a are recorded onto a subcode recording area in a form of a set. At reproduction, the hand correction processing is implemented based on the zoom position data D1a, the focus position data D2a the acceleration data D3a the video data D4a and the audio data D5a recorded in a set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording / reproducing apparatus suitable for application to, for example, a camera-integrated VTR.

[0002]

2. Description of the Related Art Conventionally, for example, in an analog recording type camera-integrated VTR, various camera shake correction techniques have been adopted. As this image stabilization technique, a technique using an acceleration sensor and a lens that mechanically shakes the head is known. In this technique, the camera shake is corrected at the time of image capturing by swinging the head of the lens according to the acceleration signal from the acceleration sensor.

As another technique for camera shake correction, there is known a technique utilizing an acceleration detecting means and a CCD image pickup device which is an area sensor. In this technique, an image pickup frame (a range for picking up an image of a subject through a lens) is set narrower than an image pickup range of the area sensor (an image pickup range of the area sensor itself), and an acceleration signal from an acceleration detection unit based on camera shake is set. Of the image pickup range of the area sensor, an image pickup frame in a predetermined range is taken out to attempt electronic image stabilization during image pickup.

[0004]

However, in the conventional technique for correcting the camera shake by shaking the head of the lens, there is a problem that the size of the camera-integrated VTR becomes relatively large and the weight thereof increases. It was

Further, in the conventional technique for correcting a camera shake by taking out an image pickup frame in a predetermined range,
Since the imaging range of the area sensor must be set larger than the imaging frame, a large CCD is required,
There was a problem that the cost increased.

Moreover, with these techniques, it is difficult to completely correct the camera shake when the object to be photographed, which is the subject, is moving, or when part of the object to be photographed is moving, and moreover, However, if incorrect correction is performed, there is a side effect that the reproduced image becomes rather difficult to see.
For this reason, you can turn on / off whether to perform image stabilization.
Although an off switch was provided, there was a problem that it was sometimes difficult to judge whether to switch the on / off switch.

Further, since the image stabilization is performed at the time of photographing (at the time of recording on the magnetic tape), there is a problem that the image recorded based on the incorrect correction cannot be recovered at the time of reproducing. It was

The present invention has been made in view of the above problems, and an object of the present invention is to provide an image recording / reproducing apparatus capable of performing a camera shake correction process during reproduction.

[0009]

Image recording / reproducing apparatus of the present invention
Is incident through the lens 1 as shown in FIG.
The converted light L to the video signal D_4aImage processing circuit 1 for converting to
2 and a signal D indicating the angle of view by detecting the angle of view at the time of imaging
_1a, D_2aAngle of view detection means 5 for outputting
Detect acceleration in at least the pan and tilt directions.
Acceleration signal S ₃Acceleration detecting means 7 for outputting
O signal D_4aAnd signal D representing the angle of view_1a, D_2aAnd acceleration signal D
_3aImage recording medium 25 for recording and
31 is provided, and the reproduction control means 31 is configured to display an image at the time of reproduction.
Video signal D from recording medium 25_4bAnd signal D representing the angle of view_1b，
D_2bAnd acceleration signal D_3bPlay as a pair with these videos
Signal D_4bAnd signal D representing the angle of view_1b, D_2bAnd acceleration signal D_3b
The image stabilization process is performed based on
It

[0010]

According to the image recording / reproducing apparatus of the present invention, the video signal D _4a and the signals D _1a , D _2a representing the angle of view and the acceleration signal D are displayed on the image recording medium 25 during the recording without the hand shake correction process.
_3a and _3a are recorded as they are without shake correction. At the time of reproduction, the reproduction control means 31 reproduces the video signal D _4a , the signals D _1a and D _2a representing the angle of view, and the acceleration signal D _3a from the image recording medium 25 as a set to electronically perform the image stabilization processing.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the image recording / reproducing apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a camera-integrated VTR to which the image recording / reproducing apparatus according to this embodiment is applied. In FIG. 1, reference numeral 1 denotes a zoom lens, and an optical element composed of a lens group (not shown) is arranged in the zoom lens 1 so as to be movable in the optical axis X direction. This optical element includes a zoom drive circuit 2 and a focus drive circuit 3.
Movement controlled by. The zoom drive circuit 2 and the focus drive circuit 3 each have a motor, and these motors have a zoom control signal S ₁ from the system controller 5.
Further, the magnification and focus of the zoom lens 1 are adjusted by being driven and controlled according to the focus control signal S ₂ .

Here, the values of the zoom control signal S ₁ and the focus control signal S ₂ are respectively a signal from a zoom adjustment button (not shown) and a signal from a focus adjustment button (not shown) for adjusting the tele wide. Is determined by the system controller 5 according to a predetermined program (stored in the ROM of the system controller 5). The values thus determined are held in the RAM of the system controller 5 as zoom position data D _1a and focus position data D _2a .

An acceleration sensor 7 as an acceleration detecting means is connected to the system controller 5. As shown in FIG. 2, the acceleration sensor 7 is arranged and fixed below the zoom lens 1 in the main body 10 of the camera-integrated VTR. An acceleration signal S ₃ accompanying the movement of the main body 10 in the pan direction P and the tilt direction T from the acceleration sensor 7 is supplied to the system controller 5. The system controller 5 converts the acceleration signal S ₃ into digital data and supplies the recording processing circuit 11 with acceleration data D _3a representing the acceleration in the pan direction P and the tilt direction T. The above-described zoom position data D _1a and focus position data D _2a are also supplied to the recording processing circuit 11.

On the other hand, the light L having image information is supplied to the image pickup processing circuit 4 through the zoom lens 1. The image pickup processing circuit 4 includes an image pickup element such as a CCD area sensor, an amplifier, and an A
The supplied light L is composed of a D / D converter and the like and is supplied to the recording processing circuit 11 after forming the supplied light L into a digital video signal (hereinafter referred to as video data) D _4a . Further, a signal due to voice vibration is supplied to the audio processing circuit 15 through the microphone 14, and a digital audio signal (hereinafter referred to as audio data) D _5a formed by the audio processing circuit 15 is supplied to the recording processing circuit 11. The video data D _4a is supplied to the system controller 5, for example, contrast AF
It is used as a control input signal in the case of autofocus in the (auto focos) method.

A recording current signal I ₁ corresponding to zoom position data D _1a , focus position data D _2a , acceleration data D _3a , video data D _{4a and} audio data D _5a is supplied from the recording processing circuit 11 to the recording head 21. It

The recording head 21 and the reproducing head 22 are attached to a rotary head (not shown), and a magnetic tape 25 as a recording medium is inclined and wound around the rotary head at a predetermined angle. The magnetic tape 25 is housed in a cassette case.

The data based on the recording current signal I ₁ corresponding to the zoom position data D _1a , the focus position data D _2a , the acceleration data D _3a , the video data D _4a and the audio data D _5a is recorded by the recording head 21 as shown in FIG. As shown
It is recorded in a set on one track 26 on the magnetic tape 25. That is, the data corresponding to the video data D _4a and the audio data D _5a is recorded in the main code recording area 26a, and the zoom position data D as additional data is recorded in the hatched sub code recording area 26b in the figure.
Data corresponding to _1a , focus position data D _2a and acceleration data D _3a are recorded.

At the time of reproduction, the data recorded on the magnetic tape 25 is read by the reproduction head 22, and the zoom position data is reproduced by the reproduction processing circuit 31 as a reproduction control means having an image memory, a signal processing circuit, a digital encoder and the like. D _1b , focus position data D _2b , acceleration data D _3b , video data D _4b and audio data D
_5b is formed.

In this embodiment, a camera shake correction switch 32 is provided for whether or not camera shake correction is performed during reproduction. Here, the camera shake correction switch 32 is turned on to perform camera shake correction processing. ..

In this case, the reproduction processing circuit 31 performs camera shake correction processing based on the procedure shown in FIG. First, the shake vector 41 of the camera in the pan direction P and the tilt direction T is generated based on the reproduced acceleration data D _3b . Next, the angle of view 42 of the camera is generated from the reproduced zoom position data D _1b and focus position data D _2b . As shown in FIG. 5, the angle of view 42 of the camera is generated at the tele end, for example, as the angle θ ₁ , and at the wide end, for example, the angle θ _2.
Is generated as. The angle of view 42 of the camera is not shown in the figure when the camera body 10 is moved by the same angle θ ₃ as shown in FIGS. On the tube surface 45, the moving range of the image 46 is used to correct the change from d ₁ (wide end) to d ₂ (tele end).

Next, the motion vector 47 of the image is generated from the reproduced video data D _4b . Incidentally, when the reproduction video data D _4b is determined to be data in the zooming from the change in the zoom position data D _1b is also generate a motion vector 47 of the image with reference to the zoom position data D _1b it can.

Then, the shake of these generated cameras
Vector 41, angle of view 42 of camera and motion vector
Image movement processing from the tor 47 according to camera shake (eg
For example, by performing the addressing process in the image memory)
It is possible to perform the image stabilization processing 43 of the image. Hand gesture
Video data D after correction processing_4cIs audio data D
_5bAnd output terminals 48 and 49 to the outside
Supplied and after image stabilization processing by a monitor not shown
You can see the image of. The video data D_4cWhen
Audio data D_5bIs output as an analog signal
You may do it.

As described above, according to the above-described embodiment, the zoom position data D _1a , the focus position data D _2a , the acceleration data D _3a , and the video data D _4a are recorded on the magnetic tape 25 during recording.
And the audio data D _5a is recorded as it is without the image stabilization process. In this case, data corresponding to the video data D _4a and the audio data D _5a is recorded in the main code recording area 26a of one track 26 on the magnetic tape 25, and the sub code recording area 2
Data corresponding to the zoom position data D _1a , the focus position data D _2a and the acceleration data D _3a is recorded in 6b in the form of a set. Therefore, it is possible to obtain an effect that the problem that the signal which is erroneously subjected to the camera shake correction process as described in the section of the related art is recorded and the recovery becomes impossible at the time of reproduction can be avoided. .. Also, during playback,
An advantage is obtained in that whether or not electronic camera shake correction is performed can be determined by operating the camera shake correction switch 32.

Further, since the zoom position data D _1b is obtained, the motion vector 47 of the image can be easily generated in combination with the acceleration data D _3b .

Furthermore, during reproduction, zoom position data D _1b
Since it can be determined that the image is a zoomed image, it is possible to perform appropriate camera shake correction for the zoomed image.

In the example of FIG. 1, the motion vector 47 of the image is also used as the data for the image stabilization process 43 of the image, but the motion vector 47 of the image is not used, but the shake vector 41 of the camera is used. It is also possible to perform image stabilization on the image from the angle of view 42 of the camera at the time of reproduction.

Further, in the example of FIG. 1, the zoom position data D _1a and the focus position data D _2a are separately recorded on the magnetic tape 2.
However, not limited to this, the system controller 5 forms the angle-of-view data D _6a from the zoom position data D _1a and the focus position data D _2a ,
The angle-of-view data D _6a may be recorded in the subcode recording area 26a of the magnetic tape 25. in this case,
The system controller 5 has a function as a view angle detecting means.

Further, in the example of FIG. 1, the acceleration data D _3a is recorded as it is, but the system controller 5 converts it into an angle change amount, and the angle change amount is recorded in the subcode recording area 26a of the magnetic tape 25. It may be recorded.

The present invention is not limited to the above-described embodiments, and it goes without saying that various configurations can be adopted without departing from the gist of the present invention.

[0031]

As described above, according to the image recording / reproducing apparatus of the present invention, at the time of recording, the video signal, the acceleration signal, and the signal representing the angle of view are recorded in the same state on the image recording medium. At the time of reproduction, it is possible to obtain the effect that the reproduction control unit can reproduce the video signal, the acceleration signal, and the signal representing the angle of view from the image recording medium to perform the camera shake correction process.

Therefore, the effect that the video signal is not recorded on the recording medium based on the erroneous image stabilization can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration in which an embodiment of an image recording / reproducing apparatus according to the present invention is applied to a camera-integrated VTR.

FIG. 2 is a diagram provided for explaining a pan direction and a tilt direction.

FIG. 3 is a diagram showing a format of recording tracks on a magnetic tape mounted on the camera-integrated VTR shown in the example of FIG.

FIG. 4 is a diagram showing a flow of data processing during reproduction of the camera-integrated VTR shown in the example of FIG.

FIG. 5 is a diagram used for explaining an angle of view.

FIG. 6 is a diagram used for explaining a relationship between zooming and an image.

[Explanation of symbols]

1 Lens 5 System Controller 7 Acceleration Sensor 12 Imaging Processing Circuit 25 Magnetic Tape 26 Track 26a Main Code Recording Area 26b Sub Code Recording Area D _1a , D _1b Zoom Position Data D _2a , D _2b Focus Position Data D _3a , D _3b Acceleration Data D _4a and D _4b video data

Claims (1)

Claim: What is claimed is: 1. An imaging processing circuit for converting light incident through a lens into a video signal, and an angle-of-view detection means for detecting an angle of view at the time of imaging and outputting a signal representing the angle of view. An acceleration detecting means for detecting acceleration in at least the pan direction and the tilt direction at the time of the image pickup and outputting an acceleration signal; and an image recording medium for recording the video signal, the signal representing the angle of view and the acceleration signal as a set. And a reproduction control means, wherein the reproduction control means reproduces the video signal, the signal representing the angle of view, and the acceleration signal from the image recording medium as a set during reproduction. An image recording / reproducing apparatus characterized in that a camera shake correction process is performed based on a signal representing an angle and an acceleration signal.