JPS62197879A - Image input device - Google Patents

Abstract

PURPOSE:To attain partial reading designation and reading operations at a time for plural areas by storing partial reading information in a memory in response to bits where a sensor reads an original and at the same time controlling the output signal of the sensor based on the memory information. CONSTITUTION:When a sensor starts reading images on an original 6, image information IFF is added successively as the input at one side of a picture gate 5. At the same time, a coordinate counter 1 counts successively coordinates and the coordinate data are successively added as addresses that read out the information an image information gate memory 7. While data that gates the image information is added as the other input of the gate 5. As a result, the image information IFP1 and 2 on the original 6 corresponding to the area where data MS1 and 2 are written are obtained from the memory 7. Here the memory 7 having the capacity larger than the maximum number of picture elements of the original 6 is used. Thus it is possible to designate the partial reading areas and the reading operations at a time and easily despite plural areas where the partial reading operations are carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image input device that obtains image information of an area designated for partial reading from an image report obtained by reading a document with a sensor.

[Conventional technology]

FIG. 5 is a block diagram showing the configuration of this type of conventional image input device. A start point register (8) is an end point register that stores the end point coordinates of partial reading. (4) is a register that compares the value of the start point register (2) with the count value of the coordinate counter (1), and The count value of the counter (1) is compared with the value of the end point register (8), and after the count value of the coordinate counter (1) reaches the value of the start point register (2), the value of the end point register (8) is compared. a comparator that outputs a significant signal until a value is reached,
(s)h An image gate inputs image information from a sensor (not shown), passes the image information while the comparator (4) outputs a significant signal, and obtains image information of an area designated for partial reading. be.

Next, the operation will be explained with reference to FIG.

As shown in FIG. 4, when trying to obtain only the image information IFP of an area S designated for partial reading out of the image information IFT of the document (6), the coordinates at which the sensor starts reading the area S, i.e. , the starting coordinate sp'2 of partial reading is set in the starting point register (2), and the coordinate at which reading of the area S ends, that is, the ending point coordinate gp of partial reading is set in the ending point register (3). When the original 6 is completely read in this state, the coordinate counter (1
), the coordinates of the document 5 are sequentially counted. Eventually,
When the count value of the coordinate counter (1) reaches the set value of the starting point register (2), the comparator (4) starts the image gate (5).
) is given a signal that allows image information to pass through. Subsequently, when the count value of the coordinate counter (1) reaches the set value of the end point register (8), the comparator (4) starts the image gate (5).
) is given a signal that does not allow image information to pass through.

In this way, when the document (6) is sequentially read by a sensor (not shown) and the image information IFT is added to the image gate (5), only the image information IFP of the area S designated for partial reading is obtained.

[Problem that the invention seeks to solve]

The conventional image input device gt is configured as described above, and by setting the partial reading start coordinate sp'6 in the start point register (2) and the partial reading end point coordinate EP in the end point register (81), further reading can be performed. The coordinates could not be set.Therefore, as shown in Figure 5, multiple areas E+1.8
For 2.83, it was not possible to specify reading and read all changes, and the speed of partial reading was extremely low.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a human-powered image processing apparatus k that can perform partial reading designation and reading for a plurality of areas at the same time.

[Means for solving problems]

The image input device according to the present invention can arbitrarily specify a partial reading area corresponding to a document, and has a memo I that stores information corresponding to pits where the sensor reads the document.
J't- is provided, and the output signal of the sensor is controlled based on the information in this memory.

[Effect]

In this invention, gate information for conditions for outputting image information is written in an area of the memory corresponding to a partial reading area of a document, and gate information for conditions for not outputting image information is written in other areas. By controlling the output of the sensor (passing or non-passing of No. g) based on the information, it is possible to designate and read partial readings of multiple locations at the same time.

〔Example〕

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, the same reference numerals as in FIG. 3 indicate the same elements. Then, start point register (
2), image information memo IJ (7)'lt% coordinate counter (1) instead of end point register (8) and comparator (4)
There is a connection between the image gate (5) and the image gate (5).

This image information gate memory (γ) has a capacity in which information can be stored in correspondence with the minimum unit in which a sensor (not shown) reads an image, that is, a pit, and the coordinate data of the coordinate counter (1) is stored in the image information gate memory (γ). The device is configured to select an address, read out gate information, and add this gate information to the image gate (5).

Hereinafter, the entire operation of this embodiment will be explained with reference to FIG. 2.

First, data MS1 and MB2 of the conditions for outputting all image information are written into the areas of the image information gate memory (7) corresponding to the areas where partial reading is to be performed in the original (6), and the data MS1 and MB2 are written into areas other than these areas. Data MsOe8# of conditions for not outputting image information is included.

Next, when a sensor (not shown) starts reading the image of the document (6), the image information IFT is sequentially read by the image gate (
6) In addition to being applied as a force, the coordinate counter (
1), the coordinates are sequentially counted. This coordinate counter (
The coordinate data in 1) is sequentially added as an address for reading information from the image information gate memory (a), and thereby the data for gating the image information is added to the image gate (6).
) is added as the other input.

As a result, data MS1 is stored in the image refresh gate memory (7).
．． Manuscript (6) corresponding to the area where MS2 was written
The above image reports rFP1 and IFP2 are obtained.

In this case, by using an image information gate memory with a capacity equal to or greater than the maximum number of pixels of the original (6), even if there are multiple areas to be partially scanned, you can specify and read the partial scan area at once. and can be done easily.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, partial reading information is stored in the memory corresponding to the pits in which the sensor reads the document, and the entire output signal of the sensor is controlled based on the information in this memory. Because of this configuration, partial reading specification and reading can be performed at a plurality of locations at the same time, and as a result, it is possible to provide an apparatus that performs partial reading at high speed at a low cost.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.
FIG. 2 is an explanatory diagram for explaining the operation of the same embodiment, and FIG.
The figure is a block diagram showing the configuration of a conventional image input device.
5 and 5 are configuration diagrams of a document partially read by this image input device. (1) Coordinate counter (5) Threat image gate (6)
. . . Manuscript (7) . . . Image information gate memory In each figure, the same reference numerals are the same, and fc indicates the corresponding portion. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Procedure corrector (self-initiated) Showa year, month, day 2, name of the invention image input device 3, representative of the person making the amendment Moriya Shiki 6, details of the amendment The entry "Manuscript 5" on the second line of page 3 of the book ("Manuscript (
6)”. Below

Claims (1)

[Claims] An image input device that obtains image information of an area designated for partial reading from image information read from a document by a sensor, comprising a memory for storing partial reading information corresponding to pits where the sensor reads the document. , an image input device characterized in that the output signal of the sensor is controlled based on information in this memory.