JPH0127319Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an image input device that inputs image information on a document as a digital signal to an information processing device, and is capable of reading only information within a desired area on the document. The present invention relates to a partial image input device.

Background of Γ Technology Image input devices are used to input text or graphic information displayed on a document into an electronic computer or facsimile machine as digital electrical signals.

FIG. 1 shows an example of the structure of an image input device, where 1 is a housing, 2 is a transparent plate provided on the top surface of the housing, 3 is a carrier that runs along the transparent plate 2, and 4 is a carrier 3. 5 is a reflecting mirror attached to carrier 3, 6 and 7 are light source lamps attached to carrier 3, and 8 and 9 are a pair of carriers attached to carrier 4. 10 is an imaging lens, 11 is a one-dimensional image sensor, 12 is a document set on transparent plate 2, 13 is a document holding cover which is pivotally attached to housing 1 14 and can be opened and closed; 15 is a document holding cover. A traveling guide for the carriers 3 and 4, 16 is a pulse motor for driving the carrier 3, 17 is a timing belt driven by the pulse motor 16, and the carrier 3 is driven by this belt 17.
The vehicle is connected to the travel guide 15 and travels back and forth along the traveling guide 15.

The original 12 is set on the transparent plate 2 with its reading side facing down, and attached to the transparent plate 2 by a cover 13. The image information on the document 12 illuminated by the light source lamps 6 and 7 is reflected by the reflection mirrors 5, 8, 9.
through the imaging lens 10 and the image sensor 11
The image is formed on the light-receiving surface of the image sensor, and is converted into a series of digital signals by the TV scan method and read by electrical main scanning by the image sensor and sub-scanning by the traveling carrier 3. The reason why the carrier 4 is made to travel in the same direction at half the speed of the carrier 3 is to prevent the length of the optical path from the document 12 to the image sensor 11 from changing even if the carrier 3 travels. Although the drive mechanism of this carrier 4 is not shown in FIG. 1, it is designed to travel in synchronization with the carrier 3 by a pulse motor 16.

When reading the document 12 with such an image input device, there is a request to input only information displayed in a partial area of the document 12.

ΓPrior Art and Problems When inputting only part of the information on the original 12 using an image input device, conventionally, as shown in FIG. I was going there depending on the situation. That is, the scales 21 and 22 are arranged along the sides perpendicular to the document reading table 20 (the upper surface of the transparent plate 2 in FIG. The operator reads the boundary position of the reading area 18 using the scales 21 and 22, inputs the read position into the device using the numeric keypad 19, etc., and then turns the original 12 over and causes the image input device to perform the reading operation. Ta.

However, with such means, the operation for specifying the desired reading area 18 is complicated, and the scale 2
1 and 22, or input errors due to incorrect operation of the numeric keypad 19. After specifying the reading area 18, the original 12 must be turned over, and the original 1
There was a problem in that when the document was turned over and the cover 13 was closed, the document was often shifted and the reading area was shifted.

Purpose of the ΓDesign This design was made to solve the problems of the conventional methods mentioned above.A bag-shaped document storage section for storing the document 12 is provided on the document holding surface side of the cover 13. By specifying the reading area and reading the image while the document is in the original, it becomes easier to specify the desired reading area, and it also prevents input errors caused by operator error or misalignment of the original. It is an object of the present invention to provide a partial image input device that can prevent this occurrence.

Configuration of the Γ Inventory The partial image input device of the present invention will be described with reference to the reference numerals of the illustrated embodiment. A document storage section 27 is provided on the surface side, and the document storage section 27 is arranged between the transparent sheet 23 and the cover 13 by fixing the bottom side 24 and at least one side 25 of the transparent sheet 23 to the cover 13. It is formed into a bag shape, and one side thereof is formed by a pressure-sensitive position detection sheet 28, and a storage device 32 for temporarily storing position information from this pressure-sensitive position detection sheet 28 is provided. The reading area 18 of the original 12 inserted into the original storage section 27 and read is controlled based on the stored position information.

Embodiment of the Γ Idea Figures 3 to 8 show an embodiment of the invention. This is a document holding cover that is pivotally attached to the housing 1 and can be opened and closed.

Sides 24, 25, 26 or 24, 2 of a rectangular transparent sheet 23 are placed on the original holding side surface of the cover 13.
5 is attached to form a bag-shaped document storage section 27 between the sheet 23 and the cover 13. Third
In the one shown in the figure, the entire length of the bottom side 24, one side 25, and the lower half of the other side 26 of the sheet 23 are attached to the cover 13. In the one shown in FIG. Only the lower half of the bottom side 24 and one side 25 are attached to the cover 13. In the figure, this pasted part is indicated by a broken line. The document 12 to be read is set in the document storage section 27 with its reading surface facing the transparent sheet 23 side.

As shown in FIG.
or cover 1 as shown in FIG.
A pressure-sensitive position detection sheet 28 is attached to the document holding surface side of No. 3. As shown in FIG. 7, the pressure-sensitive position detection sheet has band-shaped electrodes
(1), X(2)... and Y(1), Y(2)... are placed facing each other with a slight gap, and the switch matrix detects the pressed position by contacting the electrodes with each other due to pressing. Some resistive film voltage division methods detect the contact position of resistive thin films placed at a small distance from each other by dividing the voltage applied to them, and others detect changes in the electrode spacing due to pressure. There are capacitive type devices, and transparent sheet-like devices using thin films of gold or iridium tin oxide as electrodes are also in practical use.
Transparent sheet 23 or cover 1 of document storage section 27
If such a pressure-sensitive position detection sheet 28 is used on the document holding surface of No. 3, the desired reading area 18 of the document 12 set in the document storage section 27 can be traced with a fingertip or a pen-like stick 29 to detect the corresponding position. It becomes possible to specify an area.

FIG. 7 is a block diagram showing a pressure position detection circuit, and FIG.
A scan pulse is applied from the output port 30 to one electrode Y(1), Y(2)... of (2) The pressed position is detected by detecting at the input port 31 that it appears in any of the following. In the flowchart of Fig. 8, Q is the number of one electrode Y(1), Y(2)..., M is the number thereof, P is the number of the other electrode X(1), X(2)..., N
is the number of electrodes, and first, if electrode Y(1) is 1, then X(1)
Scans to see if the relevant signal appears on X(N), and if it does not appear, sequentially scans Y
Similarly, X(1) to X(N) with (2), Y(3)... as 1
When a signal is detected on the electrode on the X side, the electrode numbers P and Q are stored in the storage device 3 as position coordinates.
The control procedure to be stored in 2 is shown.

After storing a series of coordinates on the boundary line surrounding the desired reading area 18 in the storage device 32 as described above, the cover 13 is closed and an image reading operation is performed. If only the signals within the area surrounded by the coordinate group among the output signals of the image sensor 11 are treated as significant signals, only the information within the designated area 18 of the original 12 will be read.

Effects of the Γ device According to the device of the present invention described above, the reading area on a document can be specified by simply tracing the document set in the storage section with a fingertip or stick.
It is extremely easy to operate and there is no risk of reading errors. In addition, since the original is inserted into the original storage area on the back of the cover and placed on the original reading table together with the cover, there is no risk of the original moving on the original reading table in the original storage area, and positioning of the original is extremely easy and accurate. The effect is that it can be done.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an example of the structure of an image input device, and FIG. 2 is a perspective view showing a means for specifying a partial reading area in a conventional device. Figures 3 to 8 are views showing embodiments of the present invention, with Figure 3 being a perspective view of the device with the cover open, and Figure 4 being a perspective view showing only the cover portion of another embodiment. , 5th
6 and 6 are partially enlarged sectional views showing the positional relationship between the pressure-sensitive position detection sheet and the document, FIG. 7 is a block diagram showing the control system, and FIG. 8 is a flowchart showing the procedure for setting the reading area. . In the figure, 1 is a housing, 2 is a carrier, 5, 8, 9 are reflective mirrors, 10 is an imaging lens, 11 is a one-dimensional image sensor, 12 is a document, 13 is a document holding cover, 18 is a reading area, 20 is the manuscript reading table, 2
3 is a transparent sheet, 24, 25, 26 are sides of the transparent sheet, 27 is a document storage section, and 28 is a pressure-sensitive position detection sheet.

Claims (1)

[Scope of utility model registration request] In an image input device in which a document holding cover is provided on the document reading stand so that it can be opened and closed, a document storage section is provided on the document holding surface side of the cover, and this document storage section is connected to at least one side of the bottom side of the transparent sheet. A bag-like shape is formed between the transparent sheet and the cover by fixing the sides of the transparent sheet and the cover to the cover, and one side of the transparent sheet is formed of a pressure-sensitive position detection sheet, and this pressure-sensitive position detection sheet 1. A partial image input device, comprising: a storage device for temporarily storing positional information from a partial image input device; and a reading area of a document inserted into the document storage section is controlled based on the positional information.