JPH03277078A - Hand blur prevention index display device - Google Patents

Abstract

PURPOSE:To raise attention to the user and to reduce hand blur by providing a multiplex display means receiving an output of a hand blur detection means and displaying a hand blur prevention index to a fixed position of an electronic view finder in multiple. CONSTITUTION:A hand blur prevention index L consists of a vertical line and a horizontal line dividing a monitor pattern of an electronic view finder 7 into four horizontally and vertically in the middle. An index signal generating means 5a introduces an index signal to form a white hand blur prevention index L synchronously with a synchronizing signal of a video signal inputted to the electronic view finder 7. A multiple display means 5 activates a multiple means 5b on the occurrence of a hand blur detection output to multiplex the index signal and inhibits the multiplex operation for an inactivating period of the hand blur detection output. Thus, the hand blur prevention index is displayed on the electronic view finder 7 only when a hand blur of a prescribed quantity or over takes place.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a camera shake prevention index display device used to prevent camera shake in a video camera.

(b) Conventional technology Japanese Patent Application Laid-open No. 143330/1983 (GO3B19100
) discloses various configurations for detecting the direction and amount of camera shake during shooting with a video camera and changing the light receiving area within the light receiving surface of an image sensor.

Furthermore, in the above-mentioned prior art, FIGS. 4, 5, and 11 and their explanation columns, there are various display methods for displaying camera shake indicators in the direction opposite to the direction of camera shake in the electronic viewfinder. Disclosed.

(C) Problems to be Solved by the Invention However, the display method described above requires complicated display control because the position of the camera shake index is changed depending on the direction and amount of camera shake correction.

Further, although the above-mentioned prior art does not disclose detailed information regarding the period of display, it is not desirable for the display to be displayed even when there is no need for display.

Therefore, it is necessary to permanently display the camera shake correction index only when the user desires to control the camera shake correction, or only during a period when camera shake is actually occurring.

(d) Means for Solving the Problems Therefore, the first feature of the present invention is to fixedly display a camera shake prevention index on the electronic viewfinder when a camera shake detection output is generated, and the camera shake correction selection switch. It is characterized by fixedly displaying an anti-shake indicator on the electronic viewfinder in conjunction with the operation.

(E) Accordingly, according to the present invention, when camera shake occurs; a fixed index for arousing the intention and suppressing camera shake is displayed, and the burden on the camera shake correction means is reduced during the camera shake correction period. Fixed indicators are displayed for this purpose.

(f) Example Hereinafter, the present invention will be explained according to each illustrated embodiment.

(First Embodiment) First, in the first embodiment shown in FIG. 1, indicators are fixedly displayed in a multiplex manner only when camera shake is detected.

As is clear from the figure, the camcorder of this embodiment converts the image output received by the imaging means 1 into a video signal by the video processing means 2, and supplies it to the recording and reproducing means 3 to record and reproduce the video signal. Camera shake detection means 4a and camera shake correction means 1b
and supplies the correction output generated by the camera shake correction means 1b to the image pickup means 1, and the image pickup means 1 detects the image within the imaging plane according to the correction output as disclosed in the above-mentioned prior art. , and the output of the recording/reproducing means 3 is supplied to the toto section output terminal T and the electronic viewfinder 7.

In the above-mentioned camcorder, in this embodiment, a camera shake detection output issued by the camera shake detection means 4a when a camera shake of a certain amount or more occurs is inputted to the multiple display means 5.

The multiple display means 5 includes an index signal generating means 5a and a multiplex means 5b in order to display the camera shake prevention index shown in state B of FIG.

This camera shake prevention index consists of a vertical line and a horizontal line that divide the monitor screen of the electronic viewfinder into four parts at the center, vertically, horizontally, and horizontally.

The index signal generating means 5a derives an index signal for forming the above-mentioned white camera shake prevention index in synchronization with the synchronization signal of the video signal input to the electronic viewfinder 7.

Further, the multiplexing means 5b multiplexes this index signal into a video signal and supplies it to the electronic viewfinder 7.

The multiple display means 5 activates the multiplex means 5b to multiplex index signals when the camera shake detection output is generated, and prohibits this multiplexing operation during the period when the camera shake detection output is inactive. Condition in Figure 3!!!Refer to A).

Therefore, the electronic viewfinder 7 displays the camera shake prevention index only during a period when camera shake of a certain amount or more is occurring.

When the camera shake prevention index is displayed, the displacement state of the image relative to the camera shake prevention index becomes clear, and the user consciously supports the camcorder to suppress the camera shake state. The camera shake prevention index skillfully utilizes this psychological effect.

The camera shake detection means 4a of this embodiment detects the displacement of a still image between fields from the video signal to detect the amount and direction of camera shake, but the camera shake detection method of the present invention detects the amount and direction of camera shake. Regarding this, it is also possible to appropriately utilize various methods disclosed in the prior art mentioned above.

In addition, the camera shake detection output of this embodiment is the display selection switch 1.
0 to the multiplex display means 5, and by operating this display selection switch 10, the user can select to prohibit display.

Further, in this embodiment, the operation of the multiplexing means 5b is controlled by the camera shake detection output, but the present invention can adopt various configurations as long as they can control the display of the camera shake index as a result. can.

(Second Embodiment) In the second embodiment shown in FIG. 2, similarly to the first embodiment, the image pickup output received by the image pickup means 1 is converted into a video signal by the video processing means 2, and the recording and reproducing means 3 A camera shake detection and correction means 4 is provided, and a correction output generated by the camera shake detection and correction means 4 is supplied to the imaging means l having an area selection function. As disclosed in the prior art described above, the image pickup means 1 selects an image selection area within the image pickup plane according to the correction output. The output of the recording and reproducing means 3 is supplied to an external output terminal T and an electronic viewfinder 7, making it possible to monitor recorded and reproduced images.

In this embodiment, a camera shake correction selection switch 9 is provided, and a switching output is supplied to the operation control means 8.

This operation control means 8 includes the camera shake correction selection switch 9
When the circuit is closed, a drive output is generated, causing the camera shake detection and correction means 4 to function and the multiple display means 5 to function.

Conversely, when the camera shake selection switch 9 is opened, the drive output is deenergized and the operations of the camera shake detection and correction means 4 and the multiple display means 5 are prohibited.

The multiplexed signal display means 5 comprises an index signal generation means 5a and a multiplexing means 5b, similar to the first embodiment described above.

The index signal generating means 5a derives an index signal for forming the above-mentioned white anti-shake index in synchronization with the synchronization signal of the video signal input to the electronic viewfinder 7, and outputs an index signal for forming the above-mentioned white camera shake prevention index, multiplexes this index signal with a video signal and supplies it to the electronic viewfinder 7.

Note that the display selection switch 10 can block the supply of drive output to the multiple display means 5 by a release operation,
It is also configured so that the camera shake correction index can be removed as shown in state A in FIG. 3 when the user does not wish to display it.

In each of the above-described embodiments, the camera shake prevention index is formed in a cross shape with a solid line, but the present invention does not necessarily have to be a solid line or have a shape of a cross, and various display modes may be adopted.・It goes without saying that you can do it.

(G) Effects of the Invention According to the present invention, a camera shake prevention indicator is displayed as necessary, the user is alerted to the camera shake, and the camera shake can be reduced, which is highly effective.

[Brief explanation of the drawing]

FIG. 1 is a functional block diagram according to a first embodiment of the present invention, FIG. 2 is a functional block diagram according to a second embodiment, and FIG. 3 is a detailed explanatory diagram of the present invention. 1-ffl image means 4a-camera shake detection means 5-multiple display means 7-electronic viewfinder 9-camera shake correction switch 4-・camera shake detection and correction means

Claims (2)

[Claims] (1) In a video camera equipped with a camera shake detection means 4a and an electronic viewfinder 7, the output of the camera shake detection means 4a is input to set a camera shake prevention index L at a fixed position of the electronic viewfinder 7. An anti-shake index display device characterized by disposing a multiple display means 5 for multiple display. (2) A camera shake detection and correction means 4 that detects the amount of camera shake of the video camera and generates a camera shake correction signal, and a multiplex display unit 5 that displays a camera shake prevention index L in a multiplexed manner at a fixed position of the electronic viewfinder 7. A camera shake prevention index display device comprising: a camera shake correction selection switch 9 for controlling the operations of the camera shake detection and correction means 4 and the multiple display means 5, respectively.