JPS5856581A - Video camera - Google Patents

Abstract

PURPOSE:To obtain video signals with high resolution, by increasing apparent total number of arrays, through the control of position of a solid-state image pickup element in synchronizing with signal of the video signals. CONSTITUTION:A solid-state image pickup element 1 is position-controlled with actuators a2 and b3. Driving pulses for the actuators a2 and b3 are obtained from actuator drive circuits a4 and a5 to which a signal of a vertical signal generating circuit 6 is given. At the initial state, the position of the array is at the position (a) as shown in figure and in the 2nd state, the position of array is at the position (b) through the driving of the actuator a2. In the 3rd state, the actuator b3 is driven and the position is at the (c). In the 4th state, the array takes the position (d) with the actuator a2 driven. In the 5th state, the array is restored to the position (a) with the actuator b3. Thus, apparent number of the arrays is four times and the resolution can be doubled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for obtaining a static high-resolution video signal in a video camera using a solid-state imaging probe.

Conventionally, in order to convert an image into a video signal using a solid-state image sensor, the optical system of the video camera condenses the image onto a solid-state image sensor, and the light intensity on the 7 rays of the image sensor is measured in chronological order. The video signal is obtained from the K. The solution 11 of the video signal is determined by the total number of arrays,
For example, in the case of an NT8C video signal, there are 525 vertical lines (one frame) and 4.2 MH2 horizontal lines.

In this method, for example, a still image is converted into a video signal, and the still image is converted into a notebook based on the video signal. Even if you try to obtain it, K, which satisfies the solution g11 degrees and about 15 dots x 15 dots for fully recognizing characters of about 5 wm x 3-, can only be copied in a size of about B7.

SUMMARY OF THE INVENTION An object of the present invention is to provide a video camera that eliminates the above-mentioned drawbacks of the prior art and can obtain high-resolution video signals without increasing the total number of arrays.

The main point of the present invention is that in a video camera, the position of the solid-state imaging probe is controlled in synchronization with the vertical synchronization signal of the video signal, and by moving the play to the position that was the dark line of the conventional array, it is possible to create an apparent array. It is possible to obtain a high-resolution video signal by increasing the total number of video signals.

Specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a circuit that controls the position of a solid-state image sensor in a video camera, where 1 indicates a solid-state image sensor, 2F
With i actuator as 5/d actuator b, the position of the solid-state image sensor 1 is controlled by actuator a2 and actuator b5. nuclear actuator a
The drive pulses for actuator 2 and actuator b3 are obtained by actuator drive circuit 14% and actuator drive circuit b5, which input the vertical synchronization signal obtained by vertical synchronization signal generation circuit 6.

FIG. 2 is a timing chart of the vertical synchronizing signal and the actuator driving circuit. In the initial state 1ITo, the play position is at position 2 in FIG. Second state TI
The actuator a2 is driven to the position of the array at
Figure 5 becomes ■. Fifth state T! At this point, the actuator b5 is driven, and the position of the array becomes as shown in FIG.

In the fourth state T3, the actuator a2 is driven again, resulting in the state shown in FIG.

The fifth state returns to the first state by the actuator b6 being driven again.

As a result, the total number of apparent soil arrays is quadrupled, and a video signal with twice the vertical and horizontal resolution is obtained.

In addition, by pressing one actuator circuit system, synchronizing the position of the solid-state image sensor with the vertical synchronization signal, and moving it diagonally, the total number of apparent arrays can be doubled, and the resolution of the video signal can be doubled. It is also possible that you can.

According to the present invention, by equipping a video camera with a system for controlling the position of a solid-state image sensor, the total number of apparent soil arrays can be increased, and if the apparent number of arrays is quadrupled, B5 Approximately 3M written on a piece of paper about the size of
A video signal with a resolution sufficient to make the characters X 5- visible can be obtained.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a specific embodiment of the present invention, FIG. 2 is a timing chart of an actuator drive circuit, and FIG. 3 is a diagram showing how the position of the solid-state image sensor array changes. t solid-state image sensor 2, actuator a 3 actuator b 4, actuator drive circuit a 5 actuator drive circuit b 6, vertical synchronization signal generation circuit patent attorney Usui 1) Toshiyuki 41st second offender, 7 b

Claims (1)

[Claims] t. Equipped with a solid-state imaging device From K, a video camera for obtaining a video signal is provided with a device capable of changing the position of the wrinkled solid-state imaging device, and the change in the position of the solid-state imaging device is synchronized with a vertical synchronization signal. A video camera that is characterized by its ability to move.