JPS6198073A - Image pickup device - Google Patents

Abstract

PURPOSE:To obtain a still picture signal of high resolution while projecting it on the screen of a display device by shifting a two-dimensional sensors mechanically by 1/2 pitch laterally and slantingly and composing one image plane of a still picture of four frames of signals. CONSTITUTION:Light from a lens 10 is converted by the two-dimensional sensor 20 into an electric signal, which is displayed on the television display device 60 through a signal processing circuit 50. The two-dimensional sensor 20 is scanned in two dimensions by a driving circuit 40 and also moved laterally or slantingly by 1/2 pitch by a moving device 30. The obtained video signal while displayed on the display device 60 is inputted to a still picture memory 70, whose output signal is speed-converted and displayed on a high-definition display device 80, and further printed out on a video printer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an imaging device using a two-dimensional sensor, and particularly to a device suitable for capturing still images.

[Background of the invention]

2. Description of the Related Art Conventionally, when capturing a high-resolution still image using a fax machine, an image scanner, or the like, a two-dimensional screen is captured by mechanically moving a -dimensional sensor. In this case, mechanical scanning takes time, so it takes several seconds to obtain one screen.
It takes several minutes. For this reason, it is not possible to align the screen while moving the screen on the display.

The Television Society of Japan 1983 National Conference 16-3 is an example of a reading device using a one-dimensional sensor, but although it has been made faster, it still takes several seconds or more for one scan.

[Purpose of the invention]

An object of the present invention is to provide a device that uses a two-dimensional sensor, which is used in household cameras and the like, and which has a lower resolution than a one-dimensional sensor, to obtain a high-resolution still image signal while displaying a screen on a display. It is in.

[Summary of the invention]

When a two-dimensional sensor is divided into two operations and an image is displayed on a display, a normal two-dimensional sensor is scanned so that, for example, one frame of television signal can be obtained in 1/30 seconds. On the other hand, when filing the signal from a 2D sensor as a still image signal, the 2D sensor is mechanically erected, horizontally and diagonally aligned by 1/2 pitch, and 4 frames of signals form one screen. do. Or diagonally 1/
One screen may be composed of two frames, even two pitches.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. ]0
20 is a two-dimensional sensor, 30 is a two-dimensional sensor moving device, 40 is a two-dimensional sensor drive circuit, 50 is a signal processing circuit, 60 is a television display, 70 is a still image memory, 80 is a high definition The display 90 is a video printer.

A two-dimensional sensor 20 converts incident light from a lens 10 into an electrical signal. The two-dimensional sensor performs two-dimensional scanning by a drive circuit 40. The moving device 30 is a device that moves the two-dimensional sensor 20 vertically, horizontally, or diagonally by 1/2 pitch. 2
The output signal of the dimensional sensor is converted into a video signal by a signal processing circuit and displayed on the television display 60. At the same time, the video signal is input to the still image memory 70, and the output signal from the still image memory is speed-converted and displayed on the high-definition display 80, and further printed on the video printer 90.

FIG. 2 shows the internal configuration of the two-dimensional sensor 20.

21 is a horizontal shift register, 22 is a vertical shift register, 23 is a horizontal signal switch, 24 is a vertical signal switch,
25 is a photodiode. The signal photoelectrically converted by the photodiode 25 is sent to the vertical signal switch 24. The signals are sequentially output by opening and closing the horizontal signal switch 23 and become output signals of the two-dimensional sensor.

FIG. 3 shows how the two-dimensional sensor 20 is moved by a moving device 30. 100 is a two-dimensional sensor mounting board, 31 is a vertical movement device, and 32 is a horizontal movement device.

FIG. 4 shows the position of the photodiode 25 of the two-dimensional sensor 20. In the first frame, the photodiode is located at 25-1, and then in the 27th frame, as shown in FIG.
Move it 2 pitches to the side and it will be in a state of 25-2. Third
Similarly, in the frame, in addition to the horizontal movement device 32 in FIG. 3, the vertical movement device 31 is activated to bring it into the state 25-3. In the fourth frame, the lateral movement device 32 is released and the state is set to 25-4. By storing the four-frame signals in the still image memory 70 in FIG. 1 and sequentially outputting them in this way, it is possible to obtain a resolution equivalent to that of a photodiode, which is double both vertically and horizontally compared to the original two-dimensional sensor. I can do it. At this time, the original 2
Since the signal from the dimensional sensor is added as is, it is possible to monitor the signal in real time as a video signal. The movement of the two-dimensional sensor mounting board is not limited to one frame at a time; it is sufficient to store the signal in the still image memory after stably moving from state 25-1 to state 25-2. The response speed does not necessarily have to be fast.

In FIG. 5, the moving device 30 is a diagonal moving device 33,
As shown in FIG. 6, the first frame 25-1 and the second frame 25-2 are moved in a diagonal direction. By adopting such an arrangement, the number of still image memories can be halved compared to that in FIG. 4, and almost the same resolution can be obtained.

As described above, by using the two-dimensional sensor, it is possible to constantly monitor real-time signals and at the same time accumulate high-resolution still image signals.

〔Effect of the invention〕

According to the present invention, it is possible to monitor image signals in real time, which has not been possible with conventional one-dimensional sensors, and at the same time, it is possible to image high-resolution still image signals with a two-dimensional sensor whose resolution is not very high.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a configuration diagram of a two-dimensional sensor, FIG. 3 is a block diagram of a moving device, and FIG. 4 is a layout diagram of photodiodes obtained by FIG. 3. Figure 5 is an explanatory diagram of another moving device shown in Figure 3;
V is a photodiode layout diagram obtained according to FIG. 20... Two-dimensional sensor 30... Two-dimensional sensor moving device 60... Television display 70... Still image memory, 90... Video printer.

Claims (1)

[Claims] 1. A two-dimensional sensor having a discrete pixel arrangement, a device that moves the sensor so as to interpolate the pixels of the two-dimensional sensor, a display device that displays an output signal of the sensor, and a display device that displays the output signal. It has a recording and reproducing device and a function of outputting a reproduction signal of the recording and reproducing device, and continuously displays the output signal of the two-dimensional sensor on a display device, and at the same time displays one frame of the signal before moving the two-dimensional sensor. An imaging device characterized in that it records one frame of a signal after moving in an interpolative manner and reproduces it as a combined one-frame signal.