JPS637076A - Picture reader - Google Patents

Abstract

PURPOSE:To eliminate the need for transmission of useless data and to shorten a read time by providing a read width specification means prescribing the read width of an original to a necessary width and a scanning length specification means prescribing the scanning distance of said means. CONSTITUTION: On the upper face of a body 1 a read window 2, a set window 5 having X set knobs 3 and 4 and a groove 8 having Y set knob 6 and 7 are provided. The X set knob 3 and 4 are installed in the set window 5 to slide freely and the Y set knobs 6 and 7 providing a light emission diode 10 respectively on their lower part is installed slidable in the groove 8. A read width storage means 16 stores the location data set by the knobs 3 and 4 and a control means 17 controls the actions of the respective parts of a line sensor 11, a drive motor 14, a photosensor 15 and the read width storage means 16. The location of the knobs 6 and 7 is detected by the sensor 15. With this constitution, the picture data in the location from the knob 3 to the knob 4 is read out every one line in the location from the knob 7 to the knob 6, so that the range of the read of the picture data can be set at need.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an image reading device that reads image information of a document and sends the read image information to a computer or the like.

2. Description of the Related Art Conventionally, there have been image reading apparatuses that separate image information of a document such as a printed matter into dots, read the image information, and send the read image information to a computer or the like.

Such image reading devices generally use a charge transfer device (hereinafter abbreviated as CCD) and read image data by scanning the reading element, which reads one-dimensional data, with a motor or the like. Then, when reading an image, the entire width of the reading element is read line by line, scanning as much as possible within the scanning range. All the read image data is sent to the computer once, and unnecessary data is erased from the computer's image memory. I tried to keep only the necessary image data.

Problems to be Solved by the Invention Conventional image reading devices consist of the following two technologies. Even if the image to be read is only a part of the readable range, the data in the entire readable range is read and sent to the combicoater. Reading and data transfer took time, and the computer's memory needed to be large enough to receive and receive as much data as the reader could read.

Means for Solving the Problems In order to solve the following problems, the present invention sets the reading width of the reading means that reads the image data of the original by moving it relative to the original to the width of the reading window. A control means is provided for reading and regulating the position of the setting knob in the width direction on the setting window provided parallel to the direction, and controlling the scanning position of the reading means by reading the position of the setting knob in the length direction.

Operation With the above configuration, the reading means scans only a specific portion within a regulated width to read the document.

Embodiment An embodiment of the image reading device of the present invention will be described below.

Reference numeral 1 denotes a main body, and two sides thereof are provided with a reading window 2, a setting window 5 having X setting knobs 3 and 4, and a groove 8 having X setting knobs 6 and 7. The X setting knobs 3 and 4 are slidably attached to the setting window 5, and the X setting knobs 6 and 7 are provided with light emitting diodes 9 and 10 at the bottom, respectively, and are slidably attached to the groove 8.

Reference numeral 11 is a line sensor, and a CCD having light receiving elements lined up in a row is attached to the top surface, and is moved along the pair of rails 12, 1.3 by the driving force of a drive motor 14 at a position facing the setting window 5. It is provided so that it can be slid from the reading window to the opposite end of the setting window. Also, in the line sensor 11, a photosensor 15 has light emitting diodes 9, 10.
It is installed to face the

In FIG. 4, 16 is a knob position storage means, and 17
is a control means. The reading width storage means 16 stores the data of the position set by the X setting knobs 3 and 4, and the control means 17 stores the data of the position set by the X setting knobs 3 and 4. Drive motor 14. It controls the operation of each part of the photosensor 15 and the reading width storage means 16, and the state of the control will be described later.

Control means 17. The reading width storage means 16 is a central processing unit such as a microcomputer, or a read-only memory (hereinafter abbreviated as ROM) that stores processing procedures of the central processing unit 18.

) 19 and read/write memory (hereinafter abbreviated as RAM) 20. Further, an interface (hereinafter abbreviated as I10) 21 for connection with the line sensor 11, photo sensor 15, and drive motor 14 is coupled to the central processing unit 18.

Next, the operation of the control means]6 will be explained.

First, in step a of FIG. 6, the line sensor 11 is moved to the home position, that is, the position where the line sensor 11 faces the setting window 5 by controlling the drive motor 14. Next, in step b, the X setting knob 3 set by the user in advance,
4 position is read by the line sensor 11. That is, the setting window 5 is provided with the X setting knobs 3 and 4, and the setting window 5 is shaded at two locations in the longitudinal direction by the X setting knobs 3 and 4. Therefore, when the central processing unit 18 reads the output data of the line sensor 11, the position of each X-axis setting knob 3.4 can be found. Therefore, the central processing unit 18
stores the positions of X setting knobs 3 and 4 in R, AM 20. Then, in steps C and d, the line sensor 11 is moved until the light emitting diode 10 of the X setting knob 7 and the photosensor 15 are opposed to each other. When the light emitting diode 10 of the X setting knob 7 and the photosensor 15 are facing each other, the process moves to steps e, f, and g, and the X line is changed one line at a time until the light emitting diode 9 of the X setting knob 6 and the photosensor 15 are facing each other. Image data from the position of the setting knob 3 to the position of the X setting knob 4 is read and output to a connected computer (not shown) or the like. When the light emitting diode 9 of the X setting knob 6 and the photosensor 15 face each other, reading of the image data ends.

As shown above, move from the position of X setting knob 3 to the position of X setting knob 4.
In order to read the image data up to the position , line by line from the position of the X setting knob 7 to the position of the X setting knob 6,
You can set the range of image data reading.

Effects of the Invention As described above, the present invention provides a reading width regulating means that regulates the reading width of a reading means that reads image data of a document in a specific width by moving relative to the original, and a scanning distance of the reading means. By simply setting the scanning width regulating means and the scanning length regulating means, the scanning range of the document in the reading window F can be set, and the reading range of the document can be set to the host computer. There is no need to send unnecessary data, and the reading time is short.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the image information reading device of the present invention, FIG. 2 is a cross-sectional view of the same, FIG. 3 is a vertical cross-sectional view of the same, FIG. The figure is a block diagram of the same, and FIG. 6 is a flowchart showing the same operation. 1...Main unit 2...Reading window 3.4...X setting knob 5...Setting window 6.7...X setting knob 8.
...Groove 9.10...Light emitting diode 11...Line sensor 14...Drive motor 15...Photo sensor 16...Reading width storage means 17.
...Name of control means agent Patent attorney Toshio Nakao and 1 other person
Name 1 --- Book (Book fl;, 7 --- Y Tomi Moxibustion, Takuma 8- Groove @ 2 Figures 36 Figures

Claims (1)

[Claims] A document reading window is provided on the top surface of the main body, a setting window is provided parallel to the width direction of the reading window, first and second width direction setting knobs are slidably mounted on the setting window, and the reading window a groove is provided parallel to the length direction of the groove, and first and second length direction setting knobs are slidably attached to the groove;
A line sensor is provided inside the main body to read image information entering through the reading window by moving relative to the reading window, and when the line sensor faces the setting window, the pair of width direction settings are set. Read the position of the knob from the output data of the line sensor, output the position data of the first and second width direction setting knobs to the width direction setting knob position storage means, and according to the data of the width direction setting knob position storage means. The invention further comprises a control means for controlling the line sensor to read image information between the first and second width direction setting knobs and between the first and second length direction setting knobs. image reading device.