JPH04235455A - Camera type image scanner - Google Patents

Abstract

PURPOSE:To facilitate the focusing with a lens and simultaneously to display an original on a monitor in real time by providing a CCD line senser and a CCD area senser on one carrage. CONSTITUTION:In this camera type image senser, the CCD area senser 7 is attached to the carrage 2 attached with the CCD line senser 3. When a high resolution image is inputted to it, two-dimensional video information is inputted from one dimensional image in a still image by moving the carrage 2 in the direction of an arrow with the use of the CCD line senser 3. On the other hand, at the time of focusing or in the case of requesting real-time input, the image is inputted by the CCD area senser 7.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera-type image scanner using a CCD sensor.

0002

2. Description of the Related Art FIG. 4 is a block diagram showing a conventional camera-type image scanner. In the figure, (1) indicates a camera body;
(2) is a carriage that moves in the direction of the arrow inside the camera body (1) and is mechanically scanned; (3) is a carriage (2)
(4) is the lens attached to the camera body (1), (5) is the document placed on the document table, and (6) is the optical path from the document (5). represent.

Next, the operation will be explained. Light from the original (5) placed on the original table passes through the lens (4) along the optical path (6) and is imaged onto the CCD line sensor (3) inside the camera body (1). . The image formed is a CCD
The line sensor (3) converts the light into a one-dimensional video signal. Next, two-dimensional information is obtained from the one-dimensional video signal by mechanically scanning the carriage (2) in the direction of the arrow.

0004

[Problems to be Solved by the Invention] Since the conventional camera-type image scanner is configured as described above, it takes time to read the image because the carriage (2) is mechanically scanned. There were other problems, such as difficulty in focusing, and the lack of real-time processing from reading by the CCD run-in sensor (3) to displaying on the monitor.

[0005] This invention has been made to solve the above-mentioned problems, and the object is to provide a camera-type image scanner that facilitates lens focusing and that can display originals on a monitor in real time. .

[0006]

A camera-type image scanner according to the present invention has a CCD area sensor attached to a carriage on which a CCD line sensor is attached.

[0007]

[Operation] When inputting a high-resolution image, the camera-type image scanner of the present invention reads the image using a CCD line sensor as before, but when focusing the lens, the camera-type image scanner reads the image at a low resolution (same as a general television). level), but when real-time display is required, the CCD area sensor performs more real-time display.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the same parts as those in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 1, (7) indicates C on the carriage 2.
This is a CCD area sensor installed together with a CD line sensor (3).

Next, the operation will be explained. When inputting a high-resolution image, as in the conventional example, by moving the carriage (2) in the direction of the arrow using the CCD line sensor (3), two-dimensional video information is converted from a one-dimensional still image. Enter.

In general, it is necessary to focus the lens (4) before carrying out the above operation, so in that case, move the carriage (2) so that the CCD area sensor (7) is above the lens (4) and focus the lens (4) in real time. The lens (4) is focused while watching the changing video information. Thereafter, a high resolution image is input using the CCD line sensor (3).

[0012] Furthermore, even when there is no need for high-resolution images and real-time input is required, image input is performed using the CCD area sensor (7).

[0013] When the camera-type image scanner of the present invention is used as a document stage, it is possible to input both high-resolution images and low-resolution real-time images with one camera body. If only to achieve the purpose, the same effect can be obtained by using two camera bodies, such as a high-resolution camera and a low-resolution camera, for one document stand.

One method is to use CC as shown in FIG.
High-resolution camera body (8) with D-line sensor and C
A low-resolution camera body (9) having a CD area sensor is rotatably provided on a pedestal (10), and the camera bodies (8) and (9) are rotated and used for each purpose.

Furthermore, as shown in FIG. 3, two camera bodies (
The camera bodies (8) and (9) are removable, and the camera bodies (8) and (9) may be used interchangeably depending on the purpose.

[0016]

As described above, according to the present invention, since the CCD line sensor and the CCD area sensor are provided in one carriage, it becomes very easy to focus a high-resolution camera, and it is possible to The camera body can perform both high-resolution image input and low-resolution real-time image input, making it compact and extremely easy to operate.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a camera-type image scanner according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a camera-type image scanner according to another embodiment of the present invention.

FIG. 3 is a configuration diagram of a camera-type image scanner according to still another embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional camera-type image scanner.

[Explanation of symbols]

1 Camera body 2 Carriage 3 CCD line sensor 7 CCD area sensor In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] 1. A camera-type image scanner comprising a carriage movably provided within a camera body, a CCD line sensor provided on the carriage, and a CCD area sensor provided on the carriage.