JPH02104061A - Document reader - Google Patents

Abstract

PURPOSE:To eliminate the need for the control of dislocation between a coordinate and a document by using an operation instruction means to move a coordinate instruction section and to read the document, applying coordinate instruction while observing the document from the element side and using the operation instruction means to control the moving operation mode. CONSTITUTION:The document 20 on an original platen glass 14 is irradiated downward with a coordinate lamp 5 on a carriage 2. Then the image is confirmed visually by an operator through a window 15 by means of mirrors 7, 8. The operator uses a stick controller to bring the tip of the arrow 6 onto a desired control through the mirrors and stores the coordinate in a controller by depressing a coordinate input button. Furthermore, since the inside is lighted by a coordinate lamp, even if a document pressing plate 13 is closed, the coordinate designation is attained and the coordinate is designated accurately without dislocating the original.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to coordinate indicating means in a document reading device.

[Conventional technology]

Conventionally, many coordinate indicating devices for specifying positions on a document have been proposed for copying machines, document reading devices, and the like.

[Problems to be solved by the invention] In many conventional examples, the coordinate indicating means and document reading means are different devices, and the document is placed on the reading device after specifying the coordinates, making alignment difficult. Other functions such as document position detection were also required.

[Means for solving problems]

The present invention provides an image reading device in which a reading section that reads an image, converts it into an electrical signal, and outputs it, also serves as a coordinate indicating section, and further includes an instruction mechanism for moving the coordinate indicating section, and further includes an instruction mechanism for moving the coordinate indicating section. Coordinates can be easily and reliably specified using a document reading device that is characterized in that its operation mode can be controlled.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overview diagram of a document reading device 1 (hereinafter referred to as a scanner) embodying the present invention.

A scanner 1 illuminates a document on a Braden glass 14 for document placement with a document illumination lamp 3 on a carriage 2, and converts the reflected light into an electrical signal by a photoelectric conversion unit 4 composed of a photoelectric conversion element (COD) and a lens. It is a reading device that converts

The COD is a color reading COD that can read information of 256 pixels simultaneously by separating it into RGBa colors.

The carriage 2 moves on top of the rail 9 in the vertical direction in the figure (arrow a
, C), and the operation stepping (
(not shown). Therefore, since the original is normally placed at the origin 17, the original is read while moving the carriage in the direction of arrow a, and then back (in the direction of arrow A).
While doing so, the carriage is moved by 256 pixels in the direction of arrow d (no reading is performed at this time). Then repeat the reading in the same way. After reading the required size, the document returns to the origin 17. When returning, there is a home position sensor (not shown) in the direction of arrow C, so return to that position.

Now, the carriage 2 is equipped with a coordinate lamp 5, a coordinate indicating arrow 6, and a reflecting mirror 7, which operate simultaneously with the carriage.

Further, a mirror 8 is fixed to the rail 9 and moves in the left-right direction (arrows d and b).

The index 16 is used to help the operator understand the standard, size, etc. of the document.

The window 15 is a window for viewing the original through the mirrors 8 and 7. The pressure plate 13 is for pressing the original.

The operator 10 uses it for various settings, copy operation instructions, etc. This machine has a liquid crystal touch panel display 11 on the operation section 10, and the screen and key display change for each setting, making it easy for the operator to use. Coordinate indicating device (
Reference numeral 12 (hereinafter referred to as stick controller) is a device that controls the movement of the carriage when specifying coordinates.

FIG. 2 shows an external view of the stick controller 12, which will be explained below.

When the stick 32 is moved vertically and horizontally using the keys on the operating unit 10 when entering the coordinate designation mode, the carriage is also moved vertically and horizontally in response.

The stick 32 has four switches on the top, bottom, left and right, and when you move the stick, the switches turn 0N10FF.

Control of the stick and carriage will be explained in detail in the flowchart described later.

The coordinate input switch 30 is used to store the coordinates of the carriage in a controller (not shown) of the apparatus.

The speed button 31 is used to control the speed of the carriage (details will be explained in the flow chart below).

Figure 3 shows how to confirm the coordinates. The original 20 on the original table glass 14 is illuminated from below by the coordinate lamp 5 on the carriage 2. The image can be visually confirmed by the operator through the window 15 using the mirror 7.8.

The operator uses the stick controller to bring the tip of the arrow 6 to the desired coordinates through the mirror, and stores the coordinates in the controller by pressing the coordinate entry capo button.

Since the coordinate lamp illuminates from the inside, it is possible to specify the coordinates even when the document pressure plate 13 is closed, and the coordinates can be specified accurately without shifting the document.

Next, this machine has a built-in microcomputer for device control, and its operation when specifying coordinates is shown in a flowchart (Fig. 5) and will be explained below.

If coordinates are being specified (STP500), check whether the instructing flag, which is work information, is ON (5TP501); if it is not ON, coordinates specification has started, so turn on the power to the motor that moves the carriage up, down, left and right. 5TP502
) (Normally, the power to the motor is turned off as a measure to save power, etc.) Sets an instruction flag (STP503). Then, if the coordinate position has not been confirmed (STP504)
, the carriage is returned to the home position which is the reference position described above (STP505). In this embodiment, since a stepping motor is used which is operated by outputting a phase signal from a controller, the position of the carriage can be confirmed by counting the number of phase signal outputs (steps) from the home position. Therefore, since the position of the carriage is not confirmed when the power is turned on, etc., the carriage is returned to the home position.

Then, it is determined whether the film projector is in use (5TP506), and if it is not in use, the coordinate lamp 5 is turned on (STP507), and if the projector is in use, the projector lamp is turned on (STP508). A film projector is a device that can be mounted on this machine and has a length of 35 m.
A light source projects an M film or the like from behind, and the image is formed on a document table glass 14 by a lens. Then, if the image is photoelectrically converted by the CCD unit 4,
It is possible to obtain an image signal similar to that obtained by reading a document.

Now, check if there is any input for the top, bottom, left, or right of the stick.5TP509) If there is an input, it is the starting point (right or jouniniki) or the end point (left or jouniniki) (S
TP510) It does not work because it is inoperable, but in other cases, please check the speed button 31.
4) If the speed button is off, move it by 0.5 mm (STP515). Note that this machine operates 63.5 μm in one step, so if it is 0.5 mm, it will output an 8-step phase signal. If the speed button is ON, the operating distance according to the input direction of the stick is calculated from the current coordinates, and step signals are issued sequentially to operate the stick (ST
P516,5TP517). Then, while operating, it is checked whether the coordinates are the end point or the start point, and if it is either, the operation is stopped (STP).

If it is not the end point or the starting point, determine whether there is no stick input (5TP519), and when there is no stick input (when the stick is no longer tilted up, down, left, or right), stop the operation and check the coordinate type capotin.

If the coordinate type capotan is ON, the coordinate data is stored. Then, when the coordinate input is canceled by the operation unit (ST
P500) Instructing or setting the flag to 0FFL (STP511
), turn the power to the motor to 0FFL (STP512), turn the coordinate lamp (projector lamp) to 0FFL (STP513), and end the process.

The coordinate input procedure using the operation unit 10 will be explained with reference to FIG. If it is desired to copy only one area on the original, the area designation key 40 on the operation unit 10 is pressed (FIG. 4-1).

Then, the touch panel display 11 becomes as shown in FIG. 4-2, and coordinates can be specified using the stick controller 12.

Therefore, move the carriage using the stick controller, check the coordinate position using the mirror 7.8, and enter the two diagonal points of the desired area by pressing the input button.
-3 diagrams are shown.

Then, if the coordinates are correct, press the OK key 45 and the 4-4
Since we want to copy only the area shown in the figure, press the trimming key 46 and press the end key 50 to finish the setting.

Note that coordinates can be specified using the stick controller in the cases shown in FIGS. 4-2 and 4-3.

゛See Figure 4-2? The key 41 is used to display a screen explaining this designation, the finger key 42 moves to a screen for inputting numerical values of coordinates, and the AC key 43 cancels the area designation mode. C
Key 44 clears coordinate input information.

The on-screen display area 49 in FIG. 4-2 outlines the coordinate input points and displays them each time they are input.

When the OK key 45 is pressed, the points are connected and a rectangle is displayed as shown in FIG. 4-4.

A masking key 47 and an image separation key 48 are keys for indicating image processing.

Next, FIG. 6 shows a diagram of the internal configuration of the document reading device, which will be described below.

The CPU 601 uses the RAM 608 and I1 connected to the CPU bus 609 according to the program written in the ROM 600.
The entire device is controlled through the 0 port 607 and the like.

A communication circuit 602 communicates with a printer, which is an image forming apparatus, and a host computer, and a timer circuit 60
3 is a timer circuit used for various processes.

An image processing circuit 604 is used to perform various processes (such as scaling) for outputting image signals to the outside.

The liquid crystal controller 605 is a controller for controlling the touch panel display 11 of the operation unit 10, and the I10 board 607 is for controlling various input/outputs. For example, the stepping motor 610 is operated in response to the input from the joystick 12 or the input from the joystick 12.
, 611, etc.

[Other Examples]

In this embodiment described above, the coordinate indicating section and the document reading section were installed in different locations on the reading unit, but mechanical changes (for example, the reflective mirror can be moved in and out by a motor, etc.) allow the coordinate indicating section and the document reading section to be placed at different locations on the reading unit. It is also possible to configure the reading section at the same location.

In addition, the liquid crystal display of this machine has rough dots and slow response speed, so it cannot be used, but if you use a fast-response liquid crystal (color liquid crystal is also fine) or CRT as the operation part, you can use the liquid crystal or CRT without looking through the mirror. If the read images are sequentially displayed on the screen, specifying the coordinates becomes easy.

Also, although this machine uses buttons to change the moving distance, it is also possible to sequentially change the moving speed depending on how long the stick is pressed.

It is also possible to have a confirmation key and press the key after designation to sequentially move the designated points so that the operator can confirm them.

Although this machine has separate reading light sources and coordinate indicating light sources, it is also possible to use the same light source.

〔Effect of the invention〕

As explained above, in an image reading device that reads an image and converts it into an electrical signal, the reading section and the coordinate indicating section are used together, and the coordinate indicating section is moved by the operation instruction means to read the original while viewing the document from the reading element side. By making it possible to specify the coordinates and controlling the movement operation mode by the operation instruction means, it was possible to realize a reading device that is easier for the operator to use. In particular, since the specification can be made without moving the document, there is also the effect that there is no need to control coordinates and displacement of the document.

[Brief explanation of drawings]

Fig. 1 is an external view of the reading device of this embodiment, Fig. 2 is an external view of the coordinate indicating device, Fig. 3 is a general view of coordinate specifying, Fig. 4-1, Fig. 4-2, Fig. 4- 3 and 4-4 are diagrams showing display examples of the operation section, FIG. 5 is an operation flowchart, and FIG. 6 is an internal configuration diagram. 1...Reading device 2...Reading operation unit 6...Coordinate indicating index 7.8...Reflecting mirror 12...Coordinate indicating device

Claims (1)

[Claims] A reading section that reads an image, converts it into an electrical signal, and outputs the electrical signal is provided with an instruction means for moving the coordinate indicating section in an image reading device that also serves as a coordinate indicating section, and further controlling an operation mode of movement of the reading section. A document reading device characterized by: