JPH08186758A - Video camera device - Google Patents

Abstract

PURPOSE: To easily and exactly grasp the effect of a camera shake correction function without using an apparatus such as a shaking table, etc., and demostrating a hand-held photographing by realizing the operation that a pseudo camera shake correction OFF display and a pseudo camera shake ON display are automatically repeated. CONSTITUTION: An image shake correction control part 9 is constituted so as to output horizontal/vertical moving amount data to each of a CCD reading position control part 5 and a memory control part 6 so that the 'pesudo camera shake correction OFF display'→'pseudo camera shake correction ON display' by the image shake pattern of a successively selected moving pattern table 42 is repeated at the time of a camera-shake correction demonstration mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video camera device having a camera shake correction function, which is suitable for demonstrating the effect of the camera shake correction function to a purchaser or the like at a store or the like. It is supposed to be.

[0002]

2. Description of the Related Art In recent years, a video camera device that is small, lightweight and easy to handle has been widely known for general users. It's good, but in general, I often take pictures easily by holding it. However, in the case of hand-held shooting, the video camera device inadvertently moves due to camera shake, and the captured image is shaken. For this reason, it is known that the above-mentioned video camera device is equipped with a so-called camera shake correction function, which is capable of correcting an image shake component due to camera shake and shooting.

[0003] For example, a demonstration mode for allowing a user who is about to purchase a camera to confirm the image stabilization effect of the video camera device equipped with the image stabilization function as described above at a store or a showroom. As shown in FIG. 9, the following is performed. For example, in FIGS. 9A and 9B, reference numeral 1 denotes a video camera device equipped with a shake correction function, and CK provided in the video camera device 1 is a shake correction key for turning on / off the shake correction function. . The video output of the video camera device 1 is connected to, for example, an external monitor device so that a captured image is displayed on the screen of the monitor. Further, B is a vibrating table provided for demonstration purposes, and is provided with a mechanism for fixing the video camera device 1 as shown in the figure, for example, and causing a shake in the left and right and up and down directions.

As a demonstration method for asking the user to confirm the camera shake correction function, for example, as shown in FIG. 9A, the camera shake correction function of the video camera device 1 is first turned off. Subject S
While shooting the image, a horizontal shake (also referred to as yawing) is applied to the vibrating table B, and the image shakes left and right, for example, as shown in FIG. 9B (here, represented by the shake of the subject S). Have the user see the screen P of the monitor on which is displayed. Alternatively, the viewfinder of the video camera device 1 may be looked into. Next, if the camera shake correction function CK is operated to turn on the camera shake correction function, even if the shaking table B is yawing, the left and right images are displayed on the screen P by the camera shake correction control as shown in FIG. 9 (g). An image with the shake canceled is displayed. Then, for example, the image stabilization key C
If the user repeatedly operates the K several times to repeatedly view the image states of FIGS. 9B and 9G, the effect of camera shake correction can be more accurately confirmed.

Alternatively, similarly, as shown in FIG. 9C, while the subject S is being photographed, the vibrating table B is shaken in the vertical direction (also referred to as pitching), and the image stabilization function of the video camera device 1 is turned off. A screen P (Fig. 9 (d)) in which the image shake is displayed in the vertical direction is displayed, and the image shake correction function is turned on by operating the image shake correction key CK to correct the image shake as shown in Fig. 9 (g). By alternately displaying the screens P, the effect can be confirmed.

Further, as shown in FIG. 9 (e), hand-held photographing is performed on the spot, and a screen P (FIG. 9 (e)) in which image shake actually occurs due to camera shake when the camera shake correction function is off, and the camera shake correction Screen P with the function turned on and camera shake corrected
The effect of the image stabilization function can also be confirmed by viewing (Fig. 9 (g)).

[0007]

However, as shown in FIG. 9 (a).
The vibrating table B for demonstration as shown in (c) is required to be designed so as to obtain a vibration cycle or amplitude close to an actual camera shake state so that the effect of the camera shake correction function can be obtained well. And, for example, even if the manufacturer tries to supply such a vibrating table B to as many stores as possible,
In reality, it is difficult because it is very costly.
Therefore, in many cases, as shown in FIG. 9E, hand-held photographing is actually performed on the spot to demonstrate the effect of the image stabilization function. It is difficult to confirm the effect, and there is a problem that it is not an efficient demonstration to demonstrate the handheld shooting every time a salesclerk explains the product or to have the user perform the handheld shooting. .

[0008]

Therefore, in the present invention, in consideration of the above-mentioned problems, a user (purchaser) can easily and cost-effectively use without using a special instrument such as a vibrating table. It is an object of the present invention to provide a video camera device that can be demonstrated such that the effect of the image stabilization function can be sufficiently grasped.

In order to achieve the above object, the present invention is based on the detection information of the camera shake detecting means for detecting the camera shake state,
In a video camera device having an image shake correction control unit capable of correcting the image shake of the captured image due to camera shake by setting the amount of movement of the captured image in the vertical and horizontal directions, the image shake correction control unit When the camera shake correction demo mode is set, the amount of movement in the vertical and horizontal directions of the captured image is changed based on the preset image shake pattern data, so that a pseudo camera shake image or a pseudo camera shake is obtained. A correction image can be formed.

Further, as a concrete configuration of the image shake correction control section, the amount of vertical movement of the picked-up image is set by controlling the reading position of the image pickup device, and the image memory stores the image pickup signal data. The image shake correction is performed by moving the horizontal line and setting the amount of horizontal movement of the captured image. Alternatively, as a configuration for image shake correction control, a variable vertical angle prism that is driven by changing the optical axis in the vertical and horizontal directions is provided, and by driving and controlling this variable vertical angle prism, the horizontal and vertical directions of the captured image can be adjusted. Image shake correction is performed by setting the amount of movement.

[0011]

According to the above structure, the vertical / vertical direction of the picked-up image is controlled by the read / write control of the CCD image sensor and the image memory.
In a video camera device with a camera shake correction function that sets the amount of movement in the horizontal direction or the so-called active prism system that has a variable apex angle prism, a predetermined image movement pattern is set when the camera shake correction demo mode is set. The image stabilization control unit controls the movement of the readout position of the image sensor and the horizontal line of the image memory, or drives the variable apex angle prism to change the amount of movement of the captured image. It is possible to express a captured image that is shaken by hand shake, and it is possible to control the movement amount to a small amount so that the amount of this shake is reduced, and a state in which the shake correction function is operated in a pseudo manner. It becomes possible to express. If both operations are repeated, the image stabilization function can be demonstrated such that the picked-up images in the on / off state of the image stabilization function always appear alternately.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, with reference to FIG. 6, a demonstration of an image stabilization function by a video camera device according to an embodiment of the present invention will be described. FIG. 6A schematically shows, for example, a state in which the video camera device 1 according to the present embodiment is exhibited at a store, a showroom, or the like of a store. In this case, the video camera device 1 has a special vibration. Instead of a stand or the like, it may simply be installed on a fixed stand B such as a proper display stand or tripod as shown in the figure. Then, in order to demonstrate the image stabilization function with the video camera device 1 installed in this way,
First, the video camera device 1 is set to the demo mode of the image stabilization function by a predetermined operation. In addition to the illustrated image stabilization key CK (for switching the image stabilization function on / off in the normal mode), the video camera device 1 of the present embodiment has
It is assumed that various operation keys for recording, playback, fast forward, rewind, etc. are provided, but in order to enter the image stabilization demo mode, for example, it is possible to operate at the same time under normal user usage conditions. A plurality of impossible keys may be simultaneously operated (for example, the power key is turned on while operating the stop key and the pause key). By such a key combination operation, for example, even when the user purchases the video camera device of the present embodiment and appropriately operates the keys, it is prevented that the image stabilization demo mode is inadvertently entered, I try not to confuse the user.

In the present embodiment, when the camera shake correction demonstration mode is entered as described above, the video camera device 1 first performs control so as to impart a predetermined pattern of image shake to the captured image. For example, if the image shaking pattern set at this time is in the left-right direction, the screen P (may be the viewfinder of the main body) of the monitor device or the like connected to the video camera device 1 at this time is As shown in FIG. 6 (b), the image is displayed with shaking in the horizontal direction. Further, for the purpose of the present invention, it is preferable that the amount of image shake be obtained with a period and amplitude that are similar to the image shake that occurs during actual handheld shooting. That is, the display of FIG. 6B is assumed to represent the state of the captured image in a pseudo manner when the camera shake correction function is turned off during handheld shooting. Then, on the screen P at this time, for example, a message display M ("shake correction OF" is displayed to indicate to the user that the current image state corresponds to when the shake correction function is off.
F ") is displayed. The display mode of the image shake as shown in FIG. 6B is also referred to as "pseudo image stabilization function off display".

When the image shake state shown in FIG. 6B is performed for a predetermined time (for example, about 2 seconds), the shake amount of the left and right image shake patterns is changed in the video camera device 1. Then, as shown in FIG. 6C, the camera shake correction function is turned on, and an image as if the image shake due to the camera shake was corrected is artificially expressed. In this case, it is possible to set the shake amount to 0 for the captured image so that there is no image shake at all. However, in the present embodiment, a small predetermined shake amount is given, so that the shake is corrected during actual hand-held shooting. I try to get closer to the image condition. Further, in this case, the message display M indicating that the camera shake correction function is ON (“camera shake correction ON”) is displayed, and it is indicated that the image state is simulated and the camera shake is corrected. And this Figure 6
The display form shown in (c) is also referred to as "pseudo image stabilization function ON display".

Then, for example, when the pseudo image stabilization function ON display of FIG. 6C is performed for 2 seconds, the pseudo image stabilization function OFF display of FIG. 6B is returned again, and thereafter, the image stabilization demo mode is released. 6 (b) and 6 (c) until
Will be repeated every 2 seconds. Therefore, if the video camera device 1 of the present embodiment is set to the demo mode and is simply fixed and installed in a store or the like, the video camera device 1 is not particularly picked up and the operation of the image stabilization key is repeated. In addition, the user can easily imagine the operation of the image stabilization function by just looking at the screen P of the monitor device to which the video camera device 1 is connected, and sufficiently confirm the effect.

Although the image shake pattern is shown only in the left-right direction in the description with reference to FIG. 6, in actuality, for example, the image shake pattern may include vertical, oblique, circular orbits and random motions. Similarly, it is also possible to similarly perform a camera shake correction demonstration, and it is also possible to sequentially generate a plurality of these image shake patterns and perform a camera shake correction demonstration.
For example, specifically, the display switching of FIG. 6B to FIG. 6C depending on the image shake pattern in the left and right direction is repeated a predetermined number of times, and then the “pseudo image stabilization OFF display” based on the image shake pattern in the up and down direction → It is also possible to repeat the operation of switching the image state corresponding to "pseudo image stabilization ON display" a predetermined number of times as long as it is in the demo mode. You can also avoid the monotonous appearance of.

FIG. 1 is a block diagram schematically showing the structure of a functional circuit section related to the image stabilization function of the video camera apparatus 1 according to the embodiment of the present invention.
Is a lens block including a lens and an iris. Reference numeral 3 is a CCD image pickup device, and the image light of the subject through the lens block 2 is formed on the light receiving surface thereof. If the video camera device 1 of this embodiment is compatible with the NTSC system, for example, the CCD image pickup device 3
The number of lines is larger than that corresponding to the NTSC system, for example, the one corresponding to the PAL system (effective line 582 lines) is adopted, and it is possible to correct the image shake component in the vertical direction described later. It is done like this. Reference numeral 4 denotes a camera signal processing circuit, which performs required video signal processing on the signal input from the CCD image pickup device 3 and finally outputs it as a video signal.

A CCD read position control unit 5 variably controls the read start position of the CCD image pickup device 3 based on a vertical image shake correction signal supplied from a screen shake correction control unit 9, which will be described later. Further, 6 is a memory control circuit for controlling the writing and reading timings of lines of the image memory unit 7, and 7 is constituted by, for example, a line memory, and stores and holds the video signal data of the camera signal processing unit 4 for each line. It is an image memory unit that does. As described above, in this embodiment, since the CCD image pickup device 3 corresponding to the number of lines of the PAL system, which has more lines than the NTSC system, is adopted, the image pickup screen looks vertically long as it is. Therefore, the memory control circuit 6 performs time-axis conversion of the lines held in the image memory unit 7 according to the vertical enlargement ratio so that the horizontal screen is enlarged.

Reference numeral 8 denotes a vibration detector, which is composed of, for example, angular velocity sensors provided in the vicinity of the lens block 2 in the vertical and horizontal directions, respectively, to prevent vibration and shake of the video camera apparatus in the vertical and horizontal directions. The component is converted into a detection signal and output. Reference numeral 9 denotes a screen shake correction control unit configured by a microcomputer or the like for executing control processing for image shake correction, and based on the detection signal supplied from the vibration detection unit, image shake in the vertical and horizontal directions. The movement amount data for correction is generated. The vertical movement amount data is output to the CCD read position control unit 5, and the horizontal movement amount data is output to the memory control unit 6. Reference numeral 10 denotes an operation unit including various operation keys provided on the main body of the video camera device 1. For example, by operating the image stabilization key CK provided on the operation unit 10, as described above, the image stabilization is performed in the normal mode. The function can be switched on / off. Further, for example, a required simultaneous operation of a plurality of keys corresponds to the camera shake correction demo mode, and when this operation is performed, the screen shake correction control unit 9 performs the camera shake for performing the operation described in FIG. 6 from the normal mode. It will enter the correction demo mode.

FIG. 2 is a block diagram showing the internal processing of the screen shake correction control section 9. In FIG. 2, reference numeral 30 is a block of the camera shake correction processing in the normal mode. In the camera shake correction processing block in the normal mode, the angular velocity sensor output signal (vertical / horizontal) output from the vibration detection unit 8 is input (processing block 30), and DC fluctuation components and noise components are removed from the angular velocity sensor output signal. Yes (processing block 32). Then, in the next processing block 33, vertical and horizontal correction (movement amount) data is obtained (pan / tilt processing) based on the result of integration processing of the angular velocity data supplied from the processing block 32, and vertical / horizontal processing is performed. The directional movement amount data is output to the switch 36.

Further, in the figure, reference numeral 34 is a processing block for executing the processing operation when the image stabilization mode is set. Note that a specific example of processing inside the processing block 34 will be described later. Reference numeral 35 denotes a mode switching block for switching on / off the image stabilization function in the normal mode and switching to the image stabilization demo mode in response to a key operation of the operation unit 10. Reference numeral 36 denotes a switch, which is controlled by the mode switching block 35 to be switched to the normal mode image stabilization processing block 30 side in the normal image stabilization mode and to the image stabilization demo mode processing block 34 side in the demo mode. Is switched to.
The switch 36 is shown as hardware, but can be realized by software processing.

In the case of the video camera device 1 provided with the camera shake correction circuit system having the above-mentioned structure, the camera shake correction operation in the normal camera shake correction mode is roughly as follows. For example, when the camera shake correction function is turned on in the normal mode, the mode switching block 35 shown in FIG. 2 causes the camera shake correction processing block 30 in the normal mode to execute the processing, and the switch 36 switches the processing block. Switched to the 30 side. If the user is performing hand-held shooting with the camera shake correction function turned on as described above, the processing of the camera shake correction processing block 30 in the normal mode is executed, and the vertical movement corresponding to the actual camera shake state is performed. / Horizontal movement amount data is supplied to the CCD read position control unit 5 and the memory control unit 6 via the switch 36.

Then, the correction of the image shake component in the vertical direction by the CCD read position controller 5 is performed as follows. The number of effective lines of the NTSC system supported by the video camera device of this embodiment is 494, and the CCD image pickup device 3 is actually used.
Similarly, the number of lines read from and used from 494 is 494, but as described above, the CCD image pickup device 3 of this embodiment adopts the PAL system having 582 effective lines. As a result, the CCD image pickup device 3 has a line of 58
2-492 = 90 lines of allowance can be obtained. In other words, by using the margin of the number of lines, C is calculated based on the vertical movement amount data of the screen shake correction control unit 9.
By changing the read start position of the line of the CCD image pickup device 3 by the CD read position control unit 5, it becomes possible to correct the image shake component in the vertical direction.

Regarding the horizontal image shake component,
The memory control unit 6 converts the line data of the image memory unit 7 into
The correction is performed by performing the writing / reading control so as to move according to the horizontal movement amount data. In this way, the image shake component is corrected by controlling the movement amount in each of the vertical and horizontal directions of the captured image. As a result, the video signal output from the camera signal processing unit 4 shown in FIG. 1 is output after the image shake due to camera shake is corrected.

Next, the image stabilization demo mode of this embodiment will be described. FIG. 3 is a block diagram showing the internal processing of the image stabilization demo mode processing block 34 in FIG. 2 described above. In this figure, 41 is a timing generation block that outputs a timing signal at each set predetermined time. In this case, a trigger signal for selecting the screen movement tables 42, 42, 42, ... A screen position address is generated by giving a trigger signal to the screen movement table selection block 43 to switch the "pseudo image stabilization OFF display" to the "pseudo image stabilization ON display" described above with reference to FIGS. 6B and 6C. Supply to block 44. 42, 42, 42, ... Are movement pattern tables (A), (B), (C), .. It may be arbitrarily provided according to the number of image shake patterns to be displayed in the image stabilization demo mode. A specific example will be described later with reference to FIG.

Reference numeral 43 denotes a screen movement table selection block, which sequentially selects from the preset movement pattern table 42 based on the trigger signal of the timing generation block 41. Reference numeral 44 denotes a screen position address generation block, which is a movement pattern selected in order to move the image so as to obtain the pseudo camera shake image and the camera shake correction image as described above with reference to FIGS. 6B and 6C. Based on the data in the table 42, horizontal and vertical movement amount data is output. At this time, for example, switching from “pseudo image stabilization OFF display” to “pseudo image stabilization ON display” corresponding to FIGS. 6B to 6C is performed according to the timing of the trigger signal supplied from the timing generation block 41. , The movement amount data is changed so as to be increased or decreased.

Here, the movement pattern table 42 is shown in FIG.
The following is a specific example of the image shaking pattern output from. For example, in order to generate vertical image shake as shown in FIG. 4A, the x coordinate (horizontal address) is set to a constant value along the time axis and the y coordinate (vertical address is shown as shown on the right side). ) May be set as a movement pattern table with data giving a value that changes in a triangular wave shape as shown in the figure. Further, when the image is shaken in the horizontal direction, data in which the value of the x coordinate changes in a triangular wave shape along the time axis as shown in FIG. 4B so that the y coordinate has a constant value. Set the movement pattern table that outputs. Also, FIG.
As shown in (c), if the moving pattern table is such that both the values of the x and y coordinates change along the time axis in a triangular wave shape, it is possible to obtain a pattern in which the image shakes in an oblique direction. Further, in the case of FIG. 4D, a pattern in which the image sways like a circle is shown, but in order to obtain this image swaying pattern, as shown in the figure, the values of the x and y coordinates are both sinusoidal. The movement pattern table may be set such that it changes in a wave shape and the phases thereof are shifted from each other. Furthermore, when random image shake is generated, a movement pattern table is set so that both x and y coordinate values randomly change, as shown in FIG. 4 (e). In this way, by setting various data for changing the values of the x and y coordinates on the time axis, various image shake patterns can be freely generated.

As described above, in this embodiment, the movement pattern table 42 is set in advance in accordance with each type of the image shake pattern to be executed in the actual image stabilization demo mode. It should be noted that although the temporal change speeds of the values of the x and y coordinates in these movement pattern tables can be set arbitrarily, it is possible to set the change speeds equivalent to the cycle of the image shake caused by actual camera shake, for example. It is preferable for the purpose of the invention.

Next, the processing operation of the screen shake correction control section 8 (shown in FIG. 1) in the camera shake correction demonstration mode of the video camera apparatus 1 of the present embodiment configured as described above will be described with reference to the flowchart of FIG. It will be described with reference to FIG. In this case, a specific display mode in the image stabilization demo mode will be described assuming that it is set to operate as follows. First, when entering the image stabilization demo mode, after the "pseudo image stabilization OFF display" is performed for 2 seconds with the pattern that shakes the image in the vertical direction, then the "pseudo image stabilization ON display" is similarly performed for 2 seconds. repeat. Next, the switching from "pseudo image stabilization OFF display" to "pseudo image stabilization ON display" depending on the image shake pattern in the left-right direction is repeated in the same manner every 2 seconds for 3 times, and thereafter, the above series of operations is performed. It is repeated as long as it is in the correction demo mode.

In the routine shown in FIG. 5, the screen shake correction control section 8 first waits for an operation for setting the camera shake correction demonstration mode (F101). When this operation is performed, the process proceeds to step F102 and the camera shake correction is performed. You're in demo mode. In this step, in the screen shake correction control unit 8, the switch 36 is switched to the camera shake correction demo mode processing block 34 side by the control of the mode switching block 35 in FIG. 2, and the detection system of the camera shake correction control in the normal mode is disconnected, and camera shake correction is performed. The processing by the correction demo mode processing block 34 is executed.

Next, in the screen shake correction control section 8, step
After proceeding to F103, m = 1 is set for the variable m corresponding to the number of times of switching "pseudo image stabilization OFF display" to "pseudo image stabilization ON display", and then the process proceeds to step F104, where the image stabilization pattern is used for pseudo image stabilization. Off display is performed for 2 seconds.

By the way, as the movement pattern table 42 shown in FIG. 3 in this case, at least a movement pattern table (FIG. 4) for generating an image shake pattern in the vertical direction is used.
(See FIG. 4A) and a movement pattern table (FIG. 4) for generating a horizontal image shake pattern that is displayed and output thereafter.
(See (b)) is set. Then, as a specific processing operation of step F104, the screen movement table selection block 43 performs processing of selecting the movement pattern table 42 of the vertical image shake pattern,
The screen position address generation block 44 moves horizontally / vertically based on the x, y coordinate (horizontal / vertical address) data of the selected movement pattern table 42 and the amplitude data set corresponding to the image shake amount due to camera shake. Generate and output quantity data. The movement amount data is supplied to the CCD read position control unit 5 and the memory control circuit 6 via the switch 36, so that the read start position of the CCD image pickup device 3 is changed according to the temporal change of the x and y coordinate values. And the horizontal movement of the line data held in the image memory unit 7 are performed. As a result, the video signal output from the camera signal processing unit 4 becomes an image in which image shake occurs vertically due to camera shake in a state in which the camera shake correction function is off, that is, “up / down pseudo camera shake correction off display”. ]
Is done.

It should be noted that, during this "up / down pseudo camera shake correction off display" period, a message display M indicating that it corresponds to the "camera shake correction off" state as shown in FIG. 6B.
As described above, the video signal processing is performed in the camera signal processing unit 4.

When the "up / down pseudo camera shake correction OFF display" by the processing in step F104 has elapsed for 2 seconds, a trigger signal is supplied from the timing generation block 41 to the screen position address generation block 44. In accordance with this timing, the screen position address generation block 44 changes the amplitude given to the x and y coordinate data of the movement pattern table of the vertical image shake pattern to a smaller one, and outputs it as horizontal / vertical movement amount data. To do. As a result, as the display image of the video signal output,
The camera shake correction function is turned on, and the "up / down pseudo camera shake correction ON display" is performed as if the image shake in the vertical direction was corrected, and this is the processing in step F105. Also, this step F105
Even during the period when the process of (1) is being performed, the video signal processing is performed in the camera signal processing unit 4 so that the message display M indicating “camera shake correction on” in FIG.

Then, when approximately 2 seconds have passed in step F105 and a trigger signal is output from the timing generation block 41, for example, the screen shake correction control section 8 proceeds to step F106, and m ≧ 3 for the variable m. If it is determined that m ≧ 3 is not satisfied, the “upper / lower pseudo hand-shake correction OFF display” → “upper / lower pseudo hand-shake correction on display” has not been repeated three times yet, so step F107 To step F104 after incrementing m = m + 1 for the variable m, and if m ≧ 3 is determined to have been repeated three times, a demo display with an image shaking pattern in the vertical direction is displayed. Step F108 and go to Step F108.

In the above step F108, the process of resetting the variable m to m = 1 is performed, and the step F109
Proceed to. The following steps F109 → F110 → F111 → F112
The process of (F109) is the same as the above-described "up / down pseudo camera shake correction OFF" except that the movement pattern table 42 set corresponding to the horizontal image shake pattern is selected by the screen movement selection block 43 shown in FIG. "/ ON display switching" is the same as the processing operation of steps F104->F105->F106->F107-> (F104), and therefore its explanation is omitted. Then, by the process of step F109 → F110 → F111 → F112 → (F109), “left / right pseudo camera shake correction OFF display” → “left / right pseudo camera shake correction ON display” are repeated three times every two seconds, and in step F111, m ≧ 3 If it is determined that there is, the processes after step F103 will be executed again. As a result, as long as it is in the image stabilization demo mode, switching from "pseudo image stabilization off display" to "pseudo image stabilization on display"
Depending on the image shake patterns in the up-down direction and the left-right direction, a series of operations of repeating 3 times for 2 seconds each will be continuously performed.

Although not shown in the flowchart of FIG. 5, the cancellation of the camera shake correction demonstration mode is executed by turning off the power, for example. Further, as in the case of entering the image stabilization demo mode, it is possible to cancel the image stabilization demo mode by operating a plurality of keys simultaneously.

If the video camera device 1 of the present embodiment having the above-mentioned configuration is set in the image stabilization demo mode,
Even if the camera shake correction key CK is not operated one by one for the purpose of explaining the function or the handheld photographing is not actually performed, for example, FIG.
As shown in, the device can be fixed at a store or the like, and the demonstration can be performed while automatically repeating the image state of the OFF operation and the ON operation of the image stabilization function in a pseudo manner. When performing the image stabilization demo mode of the present embodiment, for example, the screen image stabilization control unit 9 configures a processing block for the image stabilization demo mode in a software manner so as to generate image shake in a pseudo manner. The camera shake correction system is controlled. Therefore, as can be seen from the configuration of the block diagram of FIG. 1, the circuit configuration of the normal image stabilization function system realizes the operation of the image stabilization demo mode and does not require any cost.

FIG. 7 is a block diagram showing the configuration of a video camera device 1 as another embodiment of the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. In the video camera device 1 of FIG. 1 shown as an example above,
Although the shake detection is performed by detecting the vibration of the apparatus itself by the vibration detection unit 8 including an angular velocity sensor, in the present embodiment, the screen shake vector detection / signal processing circuit 11 detects the shake. It

The screen shake vector detection / signal processing circuit 11 of this embodiment performs necessary signal processing on the data of the picked-up image sequentially supplied from the camera signal processing unit 4,
The motion vector of the captured image is detected, and the detection data is output to the screen shake correction control unit 9. Then, when the camera shake correction function is turned on in the normal mode, the screen shake correction control unit 9 sets vertical and horizontal movement amount data for image shake correction based on the input image motion vector data. , The CCD read control unit 5 and the memory control unit 6 to supply the video camera device 1 of the embodiment shown in FIG.
The camera shake correction is performed by the same operation as. The operation in the image stabilization demo mode in this embodiment is also shown in FIG.
It can be realized by the same configuration and processing operation as those of the embodiment shown in FIG. 7, and therefore the internal processing block of the screen shake correction unit 9 may be the same as the configuration of FIGS. 2 to 3 described above. Further, the processing operation in the image stabilization demo mode is also realized by the same processing as the flowchart of FIG.

Next, FIG. 8 shows the configuration of a video camera device 1 as still another embodiment of the present invention. The same parts as those in FIGS. 1 and 2 are designated by the same reference numerals and the description thereof will be omitted. A so-called active prism system using a variable apex angle prism is known as a camera shake correction function.However, in this embodiment, the camera shake is corrected by this system, and the variable apex prism is intentionally used in the camera shake correction demo mode. By driving it, image shake is generated and a demo display is performed.

In this figure, 20 provided in front of the lens block 2 is a variable apex angle prism. This variable apex angle prism 20 has plate glasses 21 and 23 joined by bellows and has the same refractive index as glass inside. It is configured by enclosing a liquid. Further, 22 provided on the plate glass 21
Indicates a vertical rotation axis, and the optical axis in the vertical direction changes when the plate glass 21 is rotated with the vertical rotation axis 22 as the rotation center axis. Similarly, as the plate glass 23 rotates about the horizontal rotary shaft 24 as a rotary shaft, the optical axis in the horizontal direction changes.

In this case, when the camera shake correction function is turned on in the normal mode, the screen shake correction control unit 9 performs horizontal / vertical correction for image shake correction based on the detection signal input from the vibration detection unit 8. Driving data for the variable vertical angle prism 20 is set and supplied to the driving circuit 25. Drive circuit 2
In 5, the drive signal according to the input drive data signal is applied to the prism drive motor 26, and the vertical and horizontal rotation shafts 22 and 24 of the variable apex angle prism 20 are rotationally driven by the prism drive motor 26. This causes the plate glasses 21 and 23 of the variable apex angle prism 20 to rotate,
Image stabilization is performed by changing the optical axis so as to cancel image shake.

Also in this embodiment, in the camera shake correction demonstration mode, the processing operation of the screen shake correction control section 9 may be the same as that shown in the flowchart of FIG. 5, but step F104 or step F109. The process for "(up / down / left / right) pseudo image stabilization OFF display" and "(up / down / left / right) pseudo image stabilization ON display" in step F105 or step F110 are specifically described in the above embodiments. different.

That is, during the processing of "(up / down / left / right) pseudo camera shake correction off display" (steps F104 and F109), the data of the x and y coordinates of the selected movement pattern table 42 and the camera shake correction off display are supported. The screen shake correction control unit 9 generates drive data in the horizontal / vertical directions based on the amplitude data to be output and outputs it to the drive circuit 25. As a result, when the variable apex angle prism 20 is driven, the image shakes in the vertical or horizontal direction, and a hand shake image is simulated.

The process of "(up / down / left / right) pseudo image stabilization ON display" (steps F105, F110) corresponds to the x, y coordinate data of the selected movement pattern table 42 and the image stabilization ON display. The horizontal / vertical drive data generated by the data of smaller amplitude is output to the drive circuit 25. Thus, the variable apex angle prism 20
Is driven, so that a state in which camera shake is corrected is simulated.

In the embodiment shown in FIG. 8, the vibration detection unit 8 detects the camera shake. However, as in the embodiment shown in FIG. 7, the screen shake vector detection / signal processing circuit 11 detects the camera shake. It may be configured to perform.

Further, in each of the above-mentioned embodiments, the effect of the hand-shake correction is demonstrated by the dedicated "hand-shake correction demo mode". However, for example, another solarization function (the gradation of the video signal is intentionally dropped) is used. And a monotone function (the effect of intentionally converting a color image to a black-and-white image to create the atmosphere of a black-and-white movie), and a demo mode for each demo mode. It may be possible to call it by a required key operation. Further, it is of course possible to configure such various functions to sequentially demonstrate in one demo mode. Furthermore, the present invention is not limited to the configuration shown in the above-mentioned embodiment, and various display forms at the time of actual demonstration can be considered.

[0049]

As described above, in the video camera apparatus of the present invention, if the camera shake correction demo mode is set, the camera shake correction function is automatically turned off, and a pseudo image with camera shake is displayed.
It is possible to repeatedly express the pseudo image in which the camera shake is corrected. Therefore, even if you do not prepare a special thing such as a vibrating table or perform a handheld shooting demonstration, you can simply install the video camera device on a fixed table and shoot some object, This has the effect of allowing the purchaser to fully understand the effects of the image stabilization function. Further, since the demonstration of the image stabilization function is automatically repeated, it is possible to save the trouble of repeating the on / off operation of the image stabilization function for explaining the function. Further, according to the present invention, since the display in the demo mode is performed by utilizing the image stabilization function normally provided in the video camera device, it is necessary to newly provide a functional circuit section in order to realize the operation of the image stabilization demo mode. It is also advantageous in terms of cost.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a video camera device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing the internal processing of a screen shake correction control unit according to the present embodiment.

FIG. 3 is a block diagram showing a process in a hand shake correction demo mode in a screen shake correction control unit of the present embodiment.

FIG. 4 is a diagram showing an example of a movement pattern table of the present embodiment.

FIG. 5 is a flowchart showing a process in a hand shake correction demo mode of a screen shake correction control unit of the present embodiment.

FIG. 6 is a diagram for specifically explaining the operation of the image stabilization demo mode.

FIG. 7 is a block diagram showing a configuration of a video camera device according to another embodiment of the present invention.

FIG. 8 is a block diagram showing a configuration of a video camera device according to still another embodiment of the present invention.

FIG. 9 is a diagram illustrating a method of demonstrating a conventional image stabilization function.

[Explanation of symbols]

 1 video camera device 2 lens block 3 CCD image sensor 4 camera signal processing unit 5 CCD readout position control unit 6 memory control unit 7 image memory unit 8 vibration detection unit 9 screen shake correction control unit 10 operation unit 11 screen shake vector detection / signal Processing circuit 20 Variable apex prism 25 Drive circuit 26 Prism drive motor 42 Movement pattern table CK Image stabilization key P screen S Subject M Message display

Claims (4)

[Claims] 1. The image shake of the captured image due to the camera shake can be corrected by setting the vertical and horizontal movement amounts of the captured image based on the detection information of the camera shake detection means for detecting the camera shake state. In a video camera device equipped with image shake correction control means, the image shake correction control means, when in the image shake correction demo mode, sets at least a vertical and horizontal movement amount of a captured image to a preset image. A video camera device characterized in that a pseudo camera shake image or a pseudo camera shake correction image can be formed by varying based on shake pattern data. 2. The image blur correction control means sets a vertical movement amount of a picked-up image by controlling a reading position of an image pickup element, and moves a horizontal line of an image memory in which image pickup signal data is stored. The video camera device according to claim 1, wherein the video camera device is configured so as to set the amount of horizontal movement of the captured image. 3. The image shake correction control means includes a variable apex angle prism which is driven by changing an optical axis in vertical and horizontal directions, and by driving and controlling the variable apex angle prism, a horizontal direction of a captured image is obtained. The video camera device according to claim 1, wherein the video camera device is configured to set a vertical movement amount. 4. When displaying the pseudo-shake image,
A message display indicating that the image stabilization function is turned off is displayed, and a message indicating that the image stabilization function is turned on is displayed when the pseudo image stabilization image is displayed. The video camera device according to claim 1, claim 2, or claim 3.