JPH0418505B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an image input device that reads image information printed or written on an input paper as a digital signal. The present invention relates to a partial image input device that is capable of reading a partial image.

●Technical background Image input devices are used to input text or graphic information displayed on input paper into electronic computers or facsimile machines as electrical signals, but it is generally necessary to input information on input paper. Since information often includes information that is not included in the image, there is a growing demand for a partial image input device that can input only information within a desired area on a sheet of paper.

●Prior Art and Problems An image input device that specifies a reading area on an input sheet using a reading board that reads a pressed position in X-Y coordinates is well known. This type of conventional partial image input device places input paper on a reading board, specifies a reading area on the paper with an input pen, etc., causes the reading board to read the coordinate values, and then outputs the image sensor according to the signal. The scanning width of the vehicle and the travel width of the carrier equipped with an image input sensor are controlled.

In such conventional devices, the input paper must be placed one sheet at a time on the reading board to specify the reading area, and reading operations cannot be performed continuously, making the operation cumbersome and inefficient. It is.

●Purpose of the Invention The present invention was made to solve the above-mentioned drawbacks of the conventional device, and is a partial image input device that can continuously read only the information of a desired area on an input paper with a simple operation. The aim is to provide equipment.

●Structure of the invention The image input device of this invention has a pressing position of
- In a touch-type partial image input device that is equipped with a reading board 5 that reads in the Y coordinate and specifies a reading area of information on the input paper 11 with the input paper 11 and the reading board 5 superimposed, the input paper 11 is Paper feeding devices 2 and 3 are provided to feed the paper along the path 1, and the reading board 5 is formed of a transparent board. It is characterized in that it is formed between the paper guide 8 and the transparent reading board 5 above.

The input paper 11 supplied to the paper path 1 is fed by the paper feeding devices 2 and 3 to the paper guide 8.
and the transparent reading board 5, and is temporarily stopped. In this state, if you visually check the input paper 11 through the transparent reading board 5 and specify the required reading area by pressing the transparent reading board 5, the specified position will be read by the transparent reading board 5 and stored in the memory. is input. In this state, the input paper 11 is moved, or the image sensor 7 is moved, and only the desired area on the input paper 11 is controlled by controlling the movement amount based on the read coordinate values and controlling the scanning width of the image sensor. Read.

●Embodiments of the Invention Next, the present invention will be explained in detail based on embodiments shown in the drawings.

FIG. 1 is a diagram showing the equipment configuration of the image input device of the present invention, and FIG. 2 is a block diagram showing the control system. In FIG. 1, reference numeral 1 denotes a paper path, and along this paper path 1, three sets of feed roller devices 2, 3, and 4 are provided that rotate synchronously. 5 is a transparent reading board placed between the feed roller devices 2 and 3; 6 is a coordinate input section; and 7 is a feed roller device 3 and 4.
An image sensor arranged between them; 8 and 9 are paper guides; 10 is a photoelectric sensor for positioning the input paper 11; 12 is a photoelectric sensor that detects paper ejection; 13 is a stacker that receives the ejected paper;
Reference numeral 14 denotes a paper feeding electric motor linked to the feeding roller devices 2, 3, and 4 by a rotation transmission mechanism (not shown).

The transparent reading board 5 of the coordinate input section 6 has two transparent thin film electrodes shown as 15 and 16 in FIG. 2 arranged with a slight gap between them. , 16 are in contact and a position signal is output as a voltage signal. The transparent thin film electrodes 15 and 16 are usually made by depositing a thin conductive layer of gold or iridium tin oxide on a transparent polyester film.
Using the uniform surface resistance of the thin film electrodes 15 and 16, the pressed position can be read as voltage values in the X and Y directions. Paper path 1 is paper guide 8
Since the reading board 5 is formed of transparent thin films 15 and 16, the operator can see the image information on the input paper 11 through the reading board 5.
This means that a desired input area can be specified from above the reading board 5 with a fingertip or the like and the position can be read.

The X-direction voltage and Y-direction voltage output from the reading board 5 by the pressing operation are transferred to the A-D converter 1.
The maximum and minimum values in the X and Y directions are converted into digital quantities at 7 and 18, compared with the stored values in registers 21 to 24 by comparators 19 and 20, and stored in registers 21 to 24, respectively. be done. Here, the X direction is the feeding direction of the input paper 11, and the Y direction is the direction perpendicular to the feeding direction of the paper 11. X stored in registers 21 and 22
The positional information in the direction is given to the feed control device 25 to control the rotation of the feed roller devices 2, 3, and 4, and is also given to the read command device 26 via the feed control device 25 to cause the image sensor 7 to perform the read operation. commands the start and end of. Registers 23, 24
The Y-direction position information stored in is given to the reading width control device 27, which deletes information outside the designated area from the reading information output from the image sensor 7 and outputs it. The image sensor 7 of this embodiment is a one-dimensional contact type sensor, and the image sensor 7 is a one-dimensional contact type sensor.
1 in the Y direction, image information of the entire width on the paper 11 is read. In the apparatus of the present invention, the image sensor 7 is placed above the paper path 1, so in order to downsize the apparatus,
It is effective to use a contact type image sensor that does not require an optical system.

Further, in the illustrated embodiment, the image sensor 7
The reading operation is performed while running the input paper 11 at a fixed position.
Reading may be performed while moving the image sensor 7 at a fixed position. Note that the memories in the registers 21 to 24 are cleared when the photoelectric sensor 12 detects paper ejection.

Next, the operation of the apparatus configured as described above will be explained. When input paper 11 is inserted into paper path 1, the paper is nipped and fed by feed roller device 2, and after the leading edge of paper 11 is nipped by feed roller device 3, photoelectric sensor 10 detects the leading edge of the paper. Then, the electric motor 14 stops and the position of the paper 11 is set. In this state, the operator uses his or her fingertips or an appropriate input pen to
The position information is stored in the registers 21 to 24 by pressing from above the reading board 5 so as to surround a desired input area on the reading board 5. Next, the start of the reading operation is commanded, and the feed roller devices 2, 3, and 4 rotate to feed the paper 11 at high speed until the image reading position a reaches the position specified by Xmin of the paper.
Next, a reading start signal is given to the image sensor 7, and the image sensor 7 reads the image information while the feed roller devices 2, 3, and 4 feed the paper 11 at the reading speed. Image sensor 7
reads the information on the entire width in the Y direction on the paper 11, but the reading width control device 27 does not store the information.
Based on the information of Ymax and Ymin, the read information outside the specified area is deleted and only the read information within the specified area is output. When the paper is fed to the Xmax position, a reading stop signal is sent to the image sensor 7, and the feed roller devices 2, 3, and 4 rotate at high speed to eject the paper 11. When the paper 11 is ejected, the photoelectric sensor 12 detects this and clears the stored contents of the registers 21 to 24, and the apparatus enters a state in which it waits for the next paper to be inserted.

●Effects of the Invention As described above, according to the image input device of the present invention, partial information can be obtained by the operator specifying a desired reading area by a pressing operation while viewing the input paper positioned on the position input device from the front side. can be input, it is possible to read partial images of a plurality of input sheets continuously, and there is an effect that partial reading of a plurality of sheets can be efficiently performed with a simple operation.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, with FIG. 1 being a side view schematically showing the equipment configuration of an image input device, and FIG. 2 being a block diagram showing a control system. In the figure, 1 is a paper path, 2 to 4 are feed roller devices, 5 is a reading board, 6 is a coordinate input unit, 7 is an image sensor, 10 is a photoelectric sensor, 11 is an input paper, 12 is a photoelectric sensor, and 14 is paper A feeding motor, 15 and 16 are transparent thin film electrodes, 21 to 24
is a register.

Claims (1)

[Scope of Claims] 1. A reading board 5 is provided for reading the pressed position in X-Y coordinates, and a touch is provided to specify the reading area of information on the input paper 11 with the input paper 11 and the reading board 5 superimposed. The partial image input device includes paper feeding devices 2 and 3 for feeding input paper 11 along paper path 1, reading board 5 is formed of a transparent board, and is located upstream from the arrangement position of image sensor 7. The touch-type partial image input device is characterized in that the paper path 1 is formed between a lower paper guide 8 and an upper transparent reading board 5, which are arranged parallel to each other.