JPH08116391A - Image input/output device - Google Patents

Abstract

PURPOSE: To enable desired image processings for various kinds of source documents by reading a source document by a second processing mode when the source document is discriminated as a sheet medium, outputting image information and reading a specified sheet by an optimum mode. CONSTITUTION: The image processing in accordance with a prescribed setting is performed for the source document image read by a reader part 1. Further, a prescribed image processing is performed for the read signal via a core part 10, and the signal is transferred to a fax part 4, a file part 5, a computer interface part 7 and the desired block of an image memory part 9. The image signal transferred to the file part 5 is stored in a memory 520. A CPU 12 investigates the image information of the memory 520. When it is decided that the read source document is a mark sheet, the setting of an image processing mode is performed when it is decided that the image processing mode is optimum for the reading of the mark sheet. In the reader part 1, the reading of the mark sheet is performed and the image processing which is optimum for the reading of the set mark sheet is performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image input / output device such as an image electronic filing device, a digital copying machine, a facsimile, a scanner or the like.

[0002]

2. Description of the Related Art In recent years, it has been possible to perform facsimile communication using a scanner or printer of a digital copying machine, or to use a printer of a digital copying machine to develop code data from a computer into bitmap data and print it out. Multi-function machines are in practical use. In addition, such a combination can be achieved by, for example, configuring three or more functions as one unit among a copying function, a facsimile function, a printer formatter function, an image electronic file function, an image memory function, etc. Furthermore, the processing functions are being enhanced to add higher value.

In the multi-function machine configured as described above,
By sharing a scanner and a printer corresponding to each of the above functions, space saving and cost reduction of the apparatus are achieved.

On the other hand, in a digital copying machine or an image electronic filing apparatus, in order to simplify a user's operation procedure, an apparatus capable of automatically setting a copying mode using a sheet medium such as a mark sheet is disclosed in the present application. Proposed by people. In such a proposal, the document type identification is automatically detected, the copy mode for each document is automatically set, and the operation mode setting for each document is automated according to the setting contents of the mark sheet.

[0005]

However, in the conventional digital copying machine or image electronic filing apparatus that functions as an image input device, for example, in the automatic document feeder (RDF), for example, to determine a mark sheet, , CCD
There is a problem that the cost of the device is inevitably increased by providing a detection means such as a line sensor.

Further, when the above-mentioned detection means is not provided in the apparatus, the mark sheet is read by the scanner, the read image information is temporarily stored in the image memory, and the image information on this image memory is examined. Is used to determine whether the sheet is a mark sheet.

In this case, the image information read by the scanner is often subjected to various kinds of image processing, and for example, normally, the read density setting which is the setting for the original to be read and the setting for the photographic original are performed. In some cases, pseudo halftone processing is performed when binarizing the image information, which is a problem that optimum reading is not always performed in mark sheet determination.

The present invention has been made in view of the above problems, and an object of the present invention is to read a specific sheet medium in an optimum reading mode and perform desired image processing on various originals. An object is to provide an image input / output device that can be applied.

[0009]

[Means for Solving the Problems] and

In order to achieve the above object, the invention described in claim 1 is an image input / output device for visually outputting a document image optically scanned and read, and a first processing is performed on the document image. Image processing means for performing image processing in the mode, identification means for identifying whether or not the document is a specific sheet medium based on the image processing result, and the document for identifying the document as a sheet medium. In this case, a reading unit that reads the sheet medium in the second processing mode and a unit that outputs the image information read by the reading unit are provided.

In the above-mentioned configuration, the sheet medium functions to read in the optimum reading mode when reading the sheet medium.

According to a second aspect of the present invention, the identification means identifies the document based on a predetermined identification level, and the identification level is variable.

With this configuration, it functions to reduce erroneous determinations when reading a document.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the overall configuration of the image input / output apparatus according to this embodiment. In the figure, reference numeral 1 is an image input device (hereinafter referred to as a reader unit) for converting a document into image data, and 2 is a plurality of types of recording paper cassettes. An image output device (hereinafter, referred to as a printer unit) 3 that outputs the image as a visible image on recording paper is an external device electrically connected to the reader unit 1 and has various functions described below.

The external device 3 includes a fax unit 4 for accommodating a telephone line 13, a file unit 5, an external storage device 520 connected to the file unit 5, and a computer 12.
A computer interface unit 7 for connecting to
A formatter unit 8 for converting the information from the computer 12 into a visible image, an image memory unit 9 for accumulating information from the reader unit 1 and temporarily accumulating information sent from the computer 12, and A core unit 10 that controls each of the above functions.

The functions of the above-mentioned respective parts of the image input / output apparatus according to this embodiment will be described in detail below. <Reader Unit> The configuration of the reader unit 1 and the image processing performed therein will be described in detail with reference to FIGS.

FIG. 2 is a diagram showing a cross-sectional structure of the reader unit 1 and the printer unit 2 of the apparatus according to this embodiment. In the figure, originals (not shown) stacked on the original feeding device 101 are sequentially conveyed one by one onto the surface of the original glass 102. When the document is conveyed, the lamp 103 of the scanner unit is turned on and the scanner unit 104 moves to irradiate the document. Also, the reflected light from the original is
The light passes through the lens 108 via the mirrors 105, 106 and 107, and then is input to the CCD image sensor unit 109 (hereinafter referred to as CCD).

Next, referring to FIG. 3, the image processing in the reader unit 1 will be described in detail.

The image information input to the CCD 109 shown in FIG. 2 is converted from an optical signal into an electric signal by photoelectric conversion here. The color information from this CCD 109 is
Amplifiers 110R, 110G and 110B are used for the A / D of the next stage.
It is amplified according to the input signal level of the converter 111.
The output signal from the A / D converter 111 is input to the shading circuit 112, where the lamp 1
The light distribution unevenness of No. 03 and the sensitivity unevenness of the CCD 109 are corrected. The signal from the shading circuit 112 is input to the Y signal generation / color detection circuit 113 and the external I / F switching circuit 119.

The Y signal generation / color detection circuit 113 calculates the signal from the shading circuit 112 according to the following equation (1) to obtain the Y signal.

Y = 0.3R + 0.6G + 0.1B (1) The Y signal generation / color detection circuit 113 further includes R, G, B
It has a color detection circuit (not shown) that separates the signals of 7 colors into 7 colors and outputs signals for each color. This Y signal generation
The output signal from the color detection circuit 113 is input to the scaling / repeat circuit 114. In the reader unit 1, scaling in the sub-scanning direction is performed according to the scanning speed of the scanner unit 104, and scaling in the main scanning direction is performed by the scaling / repeat circuit 114. Further, the scaling / repeat circuit 114 can output a plurality of identical images.

The contour / edge enhancement circuit 115 obtains edge enhancement and contour information by enhancing the high frequency component of the signal from the scaling / repeat 114. The signal from the contour / edge emphasis circuit 115 is used for patterning / thickening / masking / marker area determination / contour generation circuit 116.
It is input to the trimming circuit 117.

Marker area determination / contour generation circuit 116
Reads a portion of a document written with a marker pen of a specified color to generate contour information of the marker, and based on the contour information, a patterning / thickening / masking / trimming circuit 117 is used to thicken or thicken the contour information. Mask and trim. Further, patterning is performed by the color detection signal from the Y signal generation / color detection circuit 113.

An output signal from the patterning / thickening / masking / trimming circuit 117 is input to a laser driver circuit 118, and various processed signals are converted into signals for driving a laser. Then, the signal from the laser driver circuit 118 is input to the printer unit 2 where the image formation as a visible image is performed.

Next, an external I for performing I / F with an external device
The / F switching circuit 119 will be described.

When the image information is output from the reader unit 1 to the external device 3, the external I / F switching circuit forms a pattern.
The image information from the thickening / masking / trimming circuit 117 is output to the connector 120. In addition, the reader unit 1
However, when inputting image information from the external device 3, the external I
The / F switching circuit 119 inputs the image information from the connector 120 to the Y signal generation / color detection circuit 113.

Each of the above image processings is performed in accordance with an instruction from the CPU 122. Further, the area signal generation circuit 121 generates various timing signals necessary for the above image processing according to the value set by the CPU 122. Further, the CPU 122 communicates with the external device 3 by using the built-in communication function. Also, SUB / CPU1
23 controls the operation unit 124, and at the same time, the SUB
-Communication with the external device 3 is performed using the communication function built in the CPU 123. <Printer Unit> The signal input to the printer unit 2 is as shown in FIG.
The exposure control unit 201 converts the light signal into a light signal and irradiates the photoconductor 202 according to the image signal. The latent image formed on the photoconductor 202 by the irradiation light is developed by the developing device 203. At the same timing as this development, the transfer sheet is conveyed from the transfer sheet stacking section 204 or the transfer sheet stacking section 205, and the image developed as described above is transferred to the transfer sheet at the transfer section 206.

The transferred image is fixed on the transfer paper by the fixing unit 207 and then discharged from the paper output unit 208 to the outside of the apparatus. The transfer paper output from the paper output unit 208 is sent to each bin in the sorter 220 when the sort function is working, or the highest order of the sorter when the sort function is not working. It is discharged to the bottle.

Here, a method of sequentially outputting images to be read on both sides of one output sheet will be described.

In order to sequentially output the images to be read on both sides of one output sheet, the output sheet fixed by the fixing section 207 is once conveyed to the sheet discharge section 208, then the direction of the sheet is reversed, and the sheet is conveyed. The sheet is conveyed to the re-transferred transfer sheet stacking section 210 via the direction switching member 209. Then, when the next original is prepared, the original image is read in the same manner as in the above process, but the transfer paper is fed from the re-transferred transfer paper detail 210. After all, it is possible to output two document images on the front surface and the back surface of the same output paper. <External Device> The external device 3 is the reader 1 and the cable 1
4 is connected, and the core unit in the external device 3 controls signals and functions. The external device 3 includes a fax unit 4 for transmitting and receiving fax information, a file unit 5 for converting various document information into electric signals and storing the electric signals, and a computer 12.
The formatter unit 8 that develops the code information from the image information into the image information, the computer interface unit 7 that interfaces with the computer 12, the information from the reader unit 1, and the information sent from the computer 12 temporarily. It is composed of an image memory unit 9 for storing, and a core unit 10 for controlling the functions of the above respective units.

The functions of the above-mentioned units will be described in detail below. <Core Unit> FIG. 4 is a block diagram showing the internal structure of the core unit 10. In the core portion 10 shown in the figure, the connector 10
01 is connected to the connector 120 of the reader unit 1 by a cable (not shown). In addition, in the connector 1001,
The following four types of signals are handled. That is, the signal 1057
Is an 8-bit multilevel video signal, a signal 1055 is a control signal for controlling the video signal, a signal 1051 communicates with the CPU 122 in the reader unit 1, and a signal 1052 is
It communicates with the SUB / CPU 123 in the reader unit 1.

Of these signals, signal 1051 and signal 1
052 is subjected to communication protocol processing by the communication IC 1002 and transmits communication information to the CPU 1003 via the CPU bus 1053. Further, the signal 1057 is a bidirectional video signal line, and the information from the reader unit 1 is transferred to the core unit 1
It is possible to receive with 0 and output the information from the core unit 10 to the reader unit 1. Also, the signal 1057
Are connected to a buffer 1010 where they are separated from bidirectional signals into unidirectional signals 1058 and signals 1070.

The signal 1058 is an 8-bit multivalued video signal from the reader unit 1 and is input to the LUT 1011 in the next stage. In this LUT 1011, the image information from the reader unit 1 is converted into a desired value by referring to a "lookup table". Then, the output signal 1059 from the LUT 1011 is input to the binarization circuit 1012 or the selector 1013.

The binarization circuit 1012 has a multilevel signal 105.
A simple binarization function for binarizing 9 at a fixed slice level, a binarization function for a variable slice level in which the slice level fluctuates from the values of pixels around the pixel of interest, and a binarization function for an error diffusion method. Have. Then, the binarized information is converted into a multivalued signal of 00H (H means hexadecimal. The same hereinafter) when the value is “0”, and FFH when the value is “1”, which is It is input to the selector 1013 in the next stage.

The input signal of the selector 1013 is LUT1.
The signal from 011 or the output signal from the binarization circuit 1012 is selected. Then, the output signal 1060 from the selector 1013 is input to the selector 1014.

The selector 1014 outputs the output video signals from the fax unit 4, the file unit 5, the computer interface unit 7, the formatter unit 8 and the image memory unit 9 to the connectors 1005, 1006, 1007, respectively.
A signal 1064 which is a signal input to the core unit 10 via 1008 and 1009 and an output signal 1 of the selector 1013.
060 is selected by the instruction of the CPU 1003. Then, the output signal 1061 of the selector 1014 is input to the rotation circuit 1015 or the selector 1016.

The rotation circuit 1015 has a function of rotating the input image signal by +90 degrees, -90 degrees, and +180 degrees. The rotation circuit 1015 stores the information from the reader unit 1 after converting the information output from the reader unit 1 into a binary signal by the binarization circuit 1012. Next, according to an instruction from the CPU 1003, the rotation circuit 1015 rotates and reads the stored information. Then, the selector 1016 outputs the output signal 1062 from the rotating circuit 1015 and the rotating circuit 1015.
15. Any one of the input signals 1061 to 15 is selected, and the selected signal is used as a signal 1063 for the connector 1005 with the fax unit 4, the connector 1006 with the file unit 5, the connector 1007 with the computer interface unit 7, and the formatter unit 8. Input to the connector 1008, the connector 1009 to the image memory unit 9, and the selector 1017.

The signal 1063 is a synchronous 8-bit unidirectional video bus for transferring image information from the core unit 10 to the fax unit 4, file unit 5, computer interface unit 7, formatter unit 8 and image memory unit 9. is there. The signal 1064 is a synchronous 8-bit unidirectional video bus for transferring image information from the fax unit 4, file unit 5, computer interface unit 7, formatter unit 8 and image memory unit 9. The video control circuit 1004 controls the synchronous bus of these signals 1063 and 1064, and this control is performed by the output signal 1056 from the video control circuit 1004.

The above connector 1005 to connector 100
Signals 1054 are also connected to 9 respectively. This signal 1054 is a bidirectional 16-bit CPU bus signal, and asynchronously exchanges data commands. Information can be transferred between the fax unit 4, the file unit 5, the computer interface unit 7, the formatter unit 8, the image memory unit 9 and the core unit 10 by the above two video buses 1063 and 1064 and the CPU bus 1054. .

The signal 1064 from the fax unit 4, file unit 5, computer interface unit 7, formatter unit 8 and image memory unit 9 is input to the selector 1014 and the selector 1017. Selector 1014 is C
The signal 1064 is input to the rotation circuit 1015 at the next stage according to an instruction from the PU 1003. Further, the selector 1017 selects the signal 1063 and the signal 1064 according to an instruction from the CPU 1003. The output signal 1065 from the selector 1017 is the pattern matching 1018 and the selector 1
Input in 019.

The pattern matching 1018 matches the input signal 1065 with a predetermined pattern, and when the patterns match, outputs a predetermined multi-valued signal to the signal line 1066. However, if it is determined by pattern matching that they do not match, the input signal 1065 is output as the signal 1066.

Further, the selector 1019 outputs the signal 1065.
And signal 1066 are selected by the instruction of the CPU 1003. The output signal 1067 from this selector 1019 is
It is input to the LUT 1020 in the next stage. LUT1020
Converts the input signal 1067 according to the characteristics of the printer when the image information is output to the printer unit 2.

The selector 1021 selects the output signal 1068 and the signal 1065 of the LUT 1020 according to an instruction from the CPU 1003. The output signal from the selector 1021 is input to the expansion circuit 1022 at the next stage. And
The enlarging circuit 1022 can set the enlarging magnification independently in the X and Y directions according to an instruction from the CPU 1003. The enlargement method here is a first-order linear interpolation method, and the output signal 1070 of the enlargement circuit 1022 is input to the buffer 1010.

The signal 1070 input to the buffer 1010
Becomes a bidirectional signal 1057 according to an instruction from the CPU 1003 and is sent to the printer unit 2 via the connector 1001 to be printed out.

The signal flow between the core section 10 and each section will be described in detail below. <Operation of Core Unit Based on Information of Fax Unit> First, a case where information is output to the fax unit 4 will be described.

The CPU 1003 communicates with the CPU 122 of the reader unit 1 via the communication IC 1002 and issues a document scan command. In the reader unit 1, the scanner unit 104 scans the document according to this command, and outputs image information to the connector 120.

The reader unit 1 and the external device 3 are connected to the cable 14
The information from the reader unit 1 is input to the connector 1001 of the core unit 10. Connector 100
The image information input to 1 is input to the buffer 1010 through the multi-level 8-bit signal line 1057. The buffer 1010 converts the bidirectional signal 1057 into a unidirectional signal according to an instruction from the CPU 1003, and outputs the signal line 105.
Input to the LUT 1011 via 8.

The LUT 1011 converts the image information from the reader unit 1 into a desired value using a look-up table. For example, it is possible to remove the background of the original. The output signal 1059 from the LUT 1011 is input to the binarizing circuit 1012 at the next stage and is input to the binarizing circuit 1012.
Converts the 8-bit multilevel signal 1059 into a binarized signal. Specifically, the binarization circuit 1012 outputs 00H when the binarized signal is “0” and FFH when it is “1”.
As described above, the signal is converted into two multilevel signals.

The output signal from the binarization circuit 1012 is input to the rotation circuit 1015 or the selector 1016 via the selector 1013 and the selector 1014. The output signal 1062 of this rotation circuit 1015 is also
The signal is input to the selector 1016, and the selector 1016 selects either the signal 1061 or the signal 1062. The CPU 1003 selects the signal in the CPU bus 105.
It is determined by communicating with the fax unit 4 via the communication unit 4. Then, the output signal 106 from the selector 1016
3 is sent to the fax unit 4 via the connector 1005.

Next, the case of receiving information from the fax unit 4 will be described.

The image information from the fax unit 4 is transmitted to the signal line 10064 through the connector 1005 and input to the selector 1014 and the selector 1017. CPU
In the case of rotating and outputting the image at the time of fax reception to the printer unit 2 according to the instruction of 1003, the rotation circuit 1015 rotates the signal 1064 input to the selector 1014. Then, the output signal 106 from the rotation circuit 1015
2 is input to the pattern matching 1018 via the selector 1016 and the selector 1017.

The selector 1017 outputs the signal 1064 as the signal 1065. When the image at the time of fax reception is output to the printer unit 2 as it is according to the instruction of the CPU 1003, the signal 10 input to the selector 1017 is input.
64 is input to the pattern matching 1018.

The pattern matching 1018 has a function of smoothing the unevenness of the image when the fax is received. Then, the pattern-matched signal is input to the LUT 1020 via the selector 1019. LU
In T1020, the table of the LUT 1020 can be changed by the CPU 1003 in order to output the fax-received image to the printer unit 2 at a desired density.

Output signal 1068 from LUT 1020
Is input to the enlargement circuit 1022 via the selector 1021. Then, the enlarging circuit 1022 uses two values (00
H, FFH) and 8-bit multi-value are subjected to enlargement processing by a linear interpolation method of the first order. This enlargement circuit 102
An 8-bit multi-valued signal having many values from 2 is sent to the reader unit 1 via the buffer 1010 and the connector 1001.

The reader unit 1 sends the above signals to the connector 12
It is input to the external I / F switching circuit 119 via 0.
When the external I / F switching circuit 119 inputs the signal from the fax unit 4 to the Y signal generation / color detection circuit 113, the output signal from the Y signal generation / color detection circuit 113 is
After the above-described processing, the image is output to the printer unit 2 and an image is formed on the output paper. <Operation of Core Part According to Information of File Part> First, a case of outputting information to the file part 5 will be described.

The CPU 1003 communicates with the CPU 122 of the reader unit 1 via the communication IC 1002 and issues a document scan command. The reader unit 1 outputs the image information to the connector 120 by the scanner unit 104 scanning the document image according to this command.

The reader unit 1 and the external device 3 are connected to the cable 14
The information from the reader unit 1 is
The image information input to the 0 connector 1001 and input to the connector 1001 becomes a unidirectional signal 1058 by the buffer 1010.

Signal 1058 which is a multi-valued 8-bit signal
Is converted into a desired signal by the LUT 1011 and L
The output signal 1059 of the UT 1011 is the selector 101
3, input to the connector 1006 via the selector 1014 and the selector 1016. That is, the binarization circuit 10
The 8-bit multi-value signal is transferred to the file unit 5 as it is without using the functions of the 12 and the rotation circuit 1015.

However, the CPU bus 10 of the CPU 1003
When filing a binarized signal by communicating with the file unit 5 via 54, the binarization circuit 101
2. The function of the rotating circuit 1015 is used. Since the binarization processing and the rotation processing here are the same as the processing in the above-mentioned fax unit, the description thereof will be omitted here.

Next, the case of receiving information from the file section 5 will be described.

The image information from the file section 5 is output as a signal 1064 via the connector 1006 to the selector 101.
4 or input to the selector 1017. Specifically, in the case of 8-bit multi-value filing, the selector 1
017, in the case of binary filing, selector 1
014 or can be input to the selector 1017. Note that in the case of binary filing, the same processing as in the case of the above fax is performed, and therefore the description thereof is omitted.

In the case of multi-value filing, the selector 10
The output signal 1065 from 17 is input to the LUT 1020 via the selector 1019. In LUT1020,
A look-up table is created according to an instruction from the CPU 1003 in accordance with a desired print density. And
The output signal 1068 from the LUT 1020 is the selector 1
It is input to the expansion circuit 1022 via 021.

The 8-bit multilevel signal 1070 expanded by the expansion circuit 1022 in accordance with a desired expansion ratio is sent to the reader unit 1 via the buffer 1010 and the connector 1001. The information of the file section sent to the reader section 1 is output to the printer section 2 in the same manner as the processing in the above-mentioned fax section, and an image is formed on an output sheet. <Operation of Core Unit According to Information of Computer Interface Unit> The computer interface unit 7 interfaces with the computer 12 connected to the external device 3. The computer interface has, for example, SCSI, RS-232C, Centronics. The computer interface section 7 is
It has the above three types of interfaces, and the information from each interface is the connector 1007 and the data bus 10.
It is sent to the CPU 1003 via 54. CPU100
The control unit 3 performs various controls based on the contents of the information sent. <Operation of Core Unit According to Information of Formatter Unit> The formatter unit 8 is the computer interface unit 7 described above.
It has a function of expanding command data such as a document file sent from the server into image data. CPU1003
When it judges that the data sent from the computer interface section 7 via the data bus 1054 is the data relating to the formatter section 8, it transfers it to the formatter section 8 via the connector 1008. The formatter unit 8 develops the transferred data in the memory as a visible image.

Receives information from the formatter unit 8,
When the image is formed on the output paper, the formatter unit 8
The image information from is transmitted through the connector 1008 as a multilevel signal having two values (00H, FFH) on the signal line 1064. The signal 1064 is input to the selector 1014 and the selector 1017. The selector 1014 and the selector 1017 are the CPU 100.
3 is controlled by the instruction. Since the subsequent operation is the same as in the case of the above fax, the description thereof will be omitted here. <Operation of Core Unit According to Information of Image Memory Unit> A case of outputting information to the image memory unit 9 will be described.

The CPU 1003 communicates with the CPU 122 of the reader unit 1 via the communication IC 1002 and issues a document scan command. The reader unit 1 receives this command
The scanner unit 104 scans the document to output the image information to the connector 120. Reader unit 1
The external device 3 and the external device 3 are connected by the cable 14 as described above, and the information from the reader unit 1 is input to the connector 1001 of the core unit 10.

The image information input to the connector 1001 is the multilevel 8-bit signal line 1057 and the buffer 10.
Sent to LUT 1011 via 10. This LUT1
The output signal 1059 from 011 is the selector 1013,
The multivalued image information is transferred to the image memory unit 9 via the connectors 1014 and 1016 and the connector 1009.

The image information stored in the image memory unit 9 is transferred to C via the CPU bus 1054 of the connector 1009.
The image data is sent to the PU 1003, and the CPU 1003 causes the image memory unit 9 to the computer interface unit 7 described above.
Transfer the data sent from. Then, the computer interface unit 7 has three types of interfaces (SCSI, RS-232C, Centronics).
, And transfers it to the computer 12 using a desired interface.

Next, the case of receiving information from the image memory unit 9 will be described.

First, the computer interface section 7
Image information from the computer 12 via the core unit 10
Sent to The CPU 1003 of the core unit 10 receives the CPU bus 1054 from the computer interface unit 7.
If it is determined that the data sent via the data is data relating to the image memory unit 9,
It is transferred to the image memory unit 9 via 009.

The image memory unit 9 has a connector 1009.
The 8-bit multilevel signal 1064 via the selector 101
4, transmitted to the selector 017. The output signal from the selector 1014 or the selector 1017 is the CPU 100.
According to the instruction of No. 3, it is output to the printer unit 2 as in the case of the above-mentioned fax, and the image is formed on the output paper there. <Fax section> The operation of the fax section 4 will be described below.
This will be described in detail with reference to FIG.

The fax unit 4 is connected to the core unit 10 by the connector 400 and exchanges various signals. The binary information from the core unit 10 is stored in the memories A405 to D40.
8 is stored, the signal 453 from the connector 400 is input to the memory controller 404,
Under the control of the memory controller 404, the memory A4
05, memory B406, memory C407, memory D40
8 or any of these two sets of memory connected in cascade.

The memory controller 404 is the CPU 41.
According to the instruction 2, the mode for exchanging data between the memory A 405, the memory B 406, the memory C 407, the memory D 408 and the CPU bus 462 and the exchanging data for the CODEC bus 463 of the CODEC 411 having an encoding / decoding function. Mode, memory A405,
Binary video input data 454 under the control of the timing generation circuit 409 and the mode in which the contents of the memory B 406, the memory C 407, and the memory D 408 are exchanged with the bus 454 from the scaling circuit 403 under the control of the DMA controller 402. To memory A405 to memory D4
It has five functions: a mode for storing in any one of the memory 08 and a mode for reading out the memory content from any one of the memories A405 to D408 and outputting it to the signal line 452.

The memory A 405, the memory B 406, the memory C 407, and the memory D 408 each have 2 Mbytes.
And stores image information corresponding to A4 size at a resolution of 400 dpi. Also, the timing generation circuit 40
9 is connected to the connector 400 by a signal line 459, and control signals (HSYNC, HE) from the core unit 10 are provided.
N, VSYNC, VEN), the following 2
Generate signals to accomplish one function.

That is, one of the functions is to store the image signal from the core unit 10 in any one or two of the memories A405 to D408, and the second function is
This is a function of reading from any one of the memories A405 to D408 and transmitting it to the signal line 452.

The dual port memory 410 is connected to the CPU 103 of the core unit 10 via the signal line 461, and
The CPU 412 of the fax unit 4 via the signal line 462.
It is connected to the. Each CPU exchanges commands via the dual port memory 410.
The SCSI controller 413 interfaces with the hard disk 11 connected to the fax unit 4 as shown in FIG. 1 and stores data at the time of fax transmission and fax reception.

The CODEC 411 reads out the image information stored in any of the memories A405 to D408, encodes the image information in a desired one of the MH, MR, and MMR systems, and then, stores it in the memories A405 to D4.
The data is stored in any of 08 as encoded information. In addition, after reading the encoded information stored in the memories A405 to D408 and performing the decoding by a desired one of the MH, MR, and MMR methods, the decoding is performed by any one of the memories A405 to D408. It is stored as information, that is, image information.

The MODEM 414 is a CODEC 411,
Alternatively, the coded information from the hard disk connected to the SCSI controller 413 has a function of modulating a signal for transmission on a telephone line, and demodulates the information sent from the NCU 415 to convert it into coded information. CODE
This encoded information is transferred to the hard disk connected to the C411 or the SISC controller 413. The NCU 415 is a network control device that is directly connected to a telephone line and exchanges information with an exchange installed in a telephone office or the like according to a predetermined procedure.

Here, a specific example of this fax transmission will be described.

The binary image signal from the reader unit 1 is input from the connector 400 and reaches the memory controller 404 through the signal line 453. The signal on the signal line 453 is transferred to the memory A by the memory controller 404.
405. The timing stored in the memory A 405 is generated by the timing generation circuit 409 in response to the timing signal 459 from the reader unit 1.

The CPU 412 is the memory controller 40.
4 memory A405 and memory B406, CODEC
It is connected to the bus line 463 of 411. CODEC41
1 reads the image information from the memory A405,
Encoding is performed by the R method and encoded information is stored in the memory B4.
Write to 06. Then, when the CODEC 411 encodes the A4 size image information, the CPU 412 connects the memory B 406 of the memory controller 404 to the CPU bus 462. As a result, the CPU 412 sequentially reads the encoded information from the memory B 406 and transfers it to the MODEM 414. MODEM414
Modulates the encoded information and sends it as fax information over the telephone line via the NCU 415.

Next, a specific example of this fax reception will be described.

The information sent from the telephone line is NCU.
Input to 415, and NUC 415 connects to the telephone line by a predetermined procedure. The information from the NCU 415 is demodulated by the MODEM 414. CPU412
Stores information from the MODEM 414 in the memory C407 via the CPU bus 462.

When the information for one screen is stored in the memory C407, the CPU 412 controls the memory controller 404 to cause the data line 4 of the memory C407 to be read.
57 is connected to line 463 of CODEC 411. As a result, the CODED 411 sequentially reads the encoded information in the memory C407 and decodes it, that is, stores it in the memory D408 as image information.

The CPU 412 is a dual port memory 4
The CPU 1003 of the core unit 10 communicates with the printer unit 2 via the unit 10, and the printer unit 2 is set to print out an image from the memory D 408 through the core unit 10. When this setting is completed, the CPU 412 activates the timing generation circuit 409 and outputs a predetermined timing signal from the signal line 460 to the memory controller 404.

The memory controller 404 synchronizes with the signal from the timing generation circuit 409 and synchronizes with the memory D408.
The image information is read from and output to the connector 400. Since the method of outputting from the connector 400 to the printer is the same as the processing in the core unit 10, the description thereof will be omitted here. <File Section> FIG. 6 is a block diagram showing the detailed structure of the file section 5. The file unit 5 shown in the figure is connected to the core unit 10 via the connector 500 and exchanges various signals.

The multi-valued input signal 551 is input to the compression circuit 503 of the file section, where the multi-valued image information is converted into compression information and output to the memory controller 510. The output signal 552 from the compression circuit 503 is, under the control of the memory controller 510, to any one of the memory A 506, the memory B 507, the memory C 508, and the memory D 509, or one of the two memories in a cascade connection. Remembered.

The memory controller 510 is the CPU 51.
6, a mode for exchanging data with the memory A 506, the memory B 507, the memory C 508, the memory D 509, and the CPU bus 560, a mode for exchanging data with the CODEC bus 570 of the CODEC 517 for encoding / decoding, The contents of memory A506, memory B507, memory C508, and memory D509 are
A mode in which data is exchanged with the bus 562 from the scaling / rotation circuit 511 under the control of the DMA controller 518, and a mode in which the signal 553 is stored in any of the memories A506 to D509 under the control of the timing generation circuit 514, The memory contents are read from any one of the memory A506 to the memory D509, and are read by the signal line 5
It has five functions of outputting to 59.

Memory A 506, memory B 507,
Memory C508 and memory D509 are 2 Mby each
It has a capacity of tes and stores image information corresponding to A4 size at a resolution of 400 dpi.

The timing generation circuit 514 is connected to the connector 5
00 and signal line 553, and control signals (HSYNC, HEN, VSYN) from the core unit 10 are connected.
C, VEN) to generate signals to achieve the following two functions.

One of them is to store the information from the core unit 10 in one of the memories A506 to D509,
Alternatively, the function of storing in two memories, and the second function is a function of reading information from any one of the memories A506 to D509 and transmitting the information to the signal line 556.

The CPU 1003 of the core unit 10 is connected to the dual port memory 515 via the signal line 554.
CPU 51 of the file unit 5 via the signal line 560
6 is connected. Each CPU exchanges commands via the dual port memory 515.

The SCSI controller 519 is the external storage device 5 connected to the file unit 5 as shown in FIG.
Interface with 20. This external storage device 520 is specifically a replaceable magneto-optical disk 521.
And stores data such as image information. In addition, the CODEC 517 is a memory A506 to a memory D5.
09, the image information stored in one of the memory A09 and the memory 506 is read out, and the coded information stored in the memory A506 to the memory D509 is read out, and the MH, MR and MMR are read. , MMR method is used for decoding, and the decoded information, that is, image information is stored in any of the memories A506 to D509.

Here, a specific example of accumulating file information in the external storage device 520 will be described.

The 8-bit multi-valued image signal from the reader unit 1 is input from the connector 500 and input to the compression circuit 503 through the signal line 551. The signal 551 is converted into compression information 552 by the compression circuit 503. And
This compression information 552 is input to the memory controller 510.

The memory controller 510 includes the core unit 10
From the timing generation circuit 559
The compressed signal 552 is stored in the memory A 506 in accordance with the timing signal 559 generated in step A. CPU 516
The memory A 506 and the memo B of the memory controller 510
507 is connected to the bus line 570 of the CODEC 517.

The CODEC 517 reads the compressed information from the memory A 506, encodes it by the MR method, and writes the obtained encoded information in the memory B 507. When the CODEC 517 finishes encoding, the CPU 5
16 connects the memory B 507 of the memory controller 510 to the CPU bus 560. The CPU 516 sequentially reads the encoded information from the memory B507 and transfers it to the SCSI controller 519. The SCSI controller 519 stores the encoded information 572 in the external storage device 520.

Next, a specific example of extracting information from the external storage device 520 and outputting it to the printer unit 2 will be described.

Upon receiving the information retrieval / print command, the CPU 516 receives the encoded information from the external storage device 520 via the SCSI controller 519, and the memory controller 510 stores the encoded information in the memory C508. Forward. At this time, the memory controller 510 connects the CPU bus 560 to the bus 566 of the memory C508 according to an instruction from the CPU 516.

When the transfer of the encoded information to the memory C 508 is completed, the CPU 516 causes the memory controller 510 to
By controlling the memory C508 and the memory D50.
9 is connected to the bus 570 of the CODEC 517. CO
The DEC 517 reads the encoded information from the memory C 508, sequentially decodes it, and then transfers it to the memory D 509.

If scaling or rotation such as enlargement / reduction is necessary when outputting to the printer, the memory D509 is connected to the bus 562 of the scaling / rotation circuit 511, and the DMA controller 5 is connected.
Under the control of 18, the contents of the memory D509 are scaled or rotated. CPU 516 is a dual port memory 5
The CPU 1003 communicates with the CPU 1003 of the core unit 10 via 15, and makes settings for printing out an image from the memory D509 to the printer 2 through the core unit 10.

Upon completion of this setting, the CPU 516
The timing generation circuit 514 is activated and the signal line 5 is activated.
A predetermined timing signal from 59 is sent to the memory controller 5
Output to 10. The memory controller 510 synchronizes with the signal from the timing generation circuit 514 and synchronizes with the memory D5.
09 to read the decoding information and send it to the signal line 55
6 is transmitted. The signal from signal line 556 is input to decompression circuit 504 where it decompresses information. And
The output signal 555 of the expansion circuit 504 is output to the core unit 10 via the connector 500. Since the operation from the connector 500 to output to the printer is the same as the operation in the core unit 10, the description thereof is omitted here. <Computer Interface Unit> FIG. 7 is a block diagram showing the detailed arrangement of the computer interface unit 7. In the figure, a connector A700 and a connector B701 are connectors for a SCSI interface. The connector C702 is a Centronics interface connector, and the connector D703 is an R connector.
It is an S-232C interface connector. Further, the connector E707 is, as shown in FIG.
It is a connector for connecting with 0.

The SCSI interface has two connectors (connector A700 and connector B701). When connecting a device having a plurality of SCSI interfaces, connector A700 and connector B701 are provided.
Use to connect in cascade. Further, when connecting the external device 3 and the computer 12 in a one-to-one manner, a terminator is connected to the connector B701, or the connector B701 and the computer 12 are cable-connected and the terminator is connected to the connector A700.

Connector A700 or connector B70
The information from 1 is transmitted via the signal line 751 to SCSI.
-I / F-A704 or SCSI-I / F-B70
Enter in 8. SCSI I / F-A704 or S
The CSI I / F-B 708 conducts the procedure according to the SCSI protocol and then transfers the data to the signal line 754.
To the connector 707E via.

The connector E707 is the CPU of the core unit 10.
The CPU 1 of the core unit 10 connected to the bus 1054
003 is a SCSI I from this CPU bus 1054.
/ F connector (connector A700, connector B70
Receive the information entered in 1). In addition, C of the core portion 10
When outputting data from PU1003 to SCSI connector (connector A700, connector B701),
The procedure is the reverse of the above.

The Centronics interface is connected to the connector C702 and input to the Centronics I / F 705 via the signal line 752. The Centronics I / F 705 receives the data according to the procedure of the determined protocol and sends the data to the signal line 7
It outputs to the connector E707 via 54.

As described above, the connector E707 is connected to the CPU bus 1054 of the core unit 10, and the CPU 1003 of the core unit 10 inputs from the CPU bus 1054 to the Centronics I / F connector (connector C702). Receive information.

The RS-232C interface is connected to the connector D703, and the data is input to the RS-232C I / F 706 via the signal line 753. The RS-232C I / F 706 receives data according to the procedure of the determined protocol and outputs it to the connector E707 via the signal line 754.

Like the other connectors, the connector E70 is used.
7 is connected to the CPU bus 1054 of the core unit 10, and the CPU 1003 of the core unit 10 is connected to the CPU bus 1054.
4 receives the information input to the RS-232C I / F connector (connector D703). The core part 1
Data from the CPU 1003 of 0 to RS-232C I
When outputting to the / F connector (connector D703), the procedure is reversed. <Formatter Unit> FIG. 8 is a block diagram showing the configuration of the formatter unit 8.

The data from the computer interface unit 7 described above is discriminated by the core unit 10, and when it is the data relating to the formatter unit 8, the CPU 1003 of the core unit 10 determines the connector 1 of the core unit 10.
Data from the computer 12 is transferred to the dual port memory 803 via the connector 008 and the connector 800 of the formatter unit 9.

The CPU 809 of the formatter unit 8 receives the code data sent from the computer from the dual port memory 803. The CPU 809 sequentially develops this code data into image data, and stores the image data in the memory A 80 via the memory controller 808.
6 or to the memory B807.

These memory A806 and memory B80
7 has a capacity of 1 Mbytes each, and one memory (memory A806 or memory B807) is 300
It is possible to support up to A4 size paper with a resolution of dpi. In addition, in the case of supporting up to A3 size paper at a resolution of 300 dpi, the memory A806 and the memory B807
Expand the image data by connecting in cascade.

The above memory control is performed by the memory controller 808 in accordance with an instruction from the CPU 809. Further, when it is necessary to rotate a character, a graphic or the like when developing the image data, the image data is rotated by the rotation circuit 804 and then transferred to the memory A 806 or the memory B 807.

When the expansion of the image data in the memory A 806 or the memory B 807 is completed, the CPU 809
The memory controller 808 is controlled to control the memory A 806.
Data bus line 858 or the data bus line 859 of the memory B 807 is connected to the output line 855 of the memory controller 808. Next, the CPU 809 executes the CP of the core unit 10 via the dual port memory 803.
It communicates with U1003 and sets the mode in which image information is output from memory A806 or memory B807.

The CPU 1003 of the core unit 10 is the core unit 1
CPU of the reader unit 1 via the communication circuit 1002 in 0
Using the communication function built in 122, the CPU 122
Set to print output mode. The CPU 1003 of the core unit 10 also receives the timing generation circuit 8 via the connector 1008 and the connector 800 of the formatter unit 8.
02 is activated.

The timing generation circuit 802 has the core unit 10
A timing signal for reading image information from the memory A 806 or the memory B 807 is generated in the memory controller 808 in accordance with the signal from Accordingly, the image information from the memory A 806 or the memory B 807 is input to the memory controller 808 through the signal line 858 or the signal line 859. Then, the output image information from the memory controller 808 is transferred to the core unit 10 via the signal line 851 and the connector 800. The output from the core unit 10 to the printer unit 2 is the same as that of the core unit 10, and therefore the description thereof is omitted here. <Image Memory Unit 9> FIG. 9 is a block diagram showing the detailed arrangement of the image memory unit 9. As shown in the figure,
The image memory unit 9 includes a connector 900 and a core unit 10
It is connected to and exchanges various signals. The multi-valued input signal 954 is stored in the memory 904 under the control of the memory controller 905. This memory controller 905
The memory 904 and the CPU according to the instruction of the CPU 906.
It has three functions: a mode for exchanging data with the bus 957, a mode for storing the signal 954 in the memory 904 under the control of the timing generation circuit 902, and a mode for reading the memory content from the memory 904 and outputting it to the signal line 955. Have.

The memory 904 has 32 Mbytes.
The image storage device has a capacity of, and stores an image corresponding to A3 size with a resolution of 400 dpi and 256 gradations.

The timing generation circuit 902 is connected to the connector 9
00 and the signal line 952, and the core unit 10
Control signals from (HSYNC, HEN, VSYNC, V
EN) to generate signals for performing the following two functions.

That is, one of the functions is a function of storing information from the core unit 10 in the memory 904, and the second function is a function of reading data from the memory 904 and transmitting it to the signal line 955. .

The dual port memory 903 is connected to the CPU 1003 of the core unit 10 via a signal line 953 and to the CPU 906 of the image memory unit 9 via a signal line 957. Each CPU exchanges commands via the dual port memory 903.

An example in which image information is stored in the image memory unit 9 and this information is transferred to the computer 12 will be described.

The 8-bit multi-valued image signal from the reader unit 1 is input from the connector 900 and input to the memory controller 905 via the signal line 954. The memory controller 905 stores the signal 954 in the memory 904 in accordance with the timing signal 956 generated by the timing generation circuit 902 by the signal 952 from the core unit 10.

The CPU 906 is the memory controller 90.
No. 5 memory 904 is connected to the CPU bus 957. Further, the CPU 906 sequentially reads the image information from the memory 904 and transfers it to the dual port memory 903. On the other hand, the CPU 1003 of the core unit 10 reads the image information of the dual port memory 903 of the image memory unit 9 via the signal line 953 and the connector 900, and transfers this information to the computer interface unit 7. The operation of transferring information from the computer interface unit 7 to the computer 12 has already been described, and will be omitted here.

Next, an example of outputting the image information sent from the computer 12 to the printer unit 2 will be described.

The image information sent from the computer 12 is sent to the core unit 10 via the computer interface unit 7. CPU 1003 of core unit 10
Is a dual port memory 903 of the image memory unit 9 via the CPU bus 1054 and the connector 1009.
Transfer image information to.

At this time, the CPU 906 controls the memory controller 905 to transfer the CPU bus 957 to the memory 9.
04 bus. The CPU 906 transfers the image information from the dual port memory 903 to the memory 904 via the memory controller 905. When the transfer of the image information to the memory 904 is completed, the CPU
906 controls the memory controller 905 to connect the data line of the memory 904 to the signal 955.

The CPU 906 is the dual port memory 9
03 to communicate with the CPU 1003 of the core unit 10 to pass from the memory 904 through the core unit 10 to the printer 2
Make settings to print out the image on.

When the above setting is completed, the CPU 906
Activates the timing generation circuit 902 and outputs a predetermined timing signal from the signal line 956 to the memory controller 905. The memory controller 905 is
In synchronization with the signal from the timing generation circuit 902,
Image information is read from the memory 904, transmitted to the signal line 955, and output to the connector 900.
The operation of outputting from the connector 900 to the printer unit 2 is the same as the description of the core unit 10, and thus will be omitted.

Next, the operation of reading the sheet medium, determining the sheet medium, and setting the image processing mode in this embodiment will be described.

FIG. 10 is a flow chart showing the processing procedure in the image input / output apparatus according to this embodiment, particularly the recognition procedure of the mark sheet.

In FIG. 10, as the start of processing, a start key (not shown) provided in the operation unit 124 of the image input / output apparatus is pressed, and the SUB CPU 123 switches to the CPU.
When this is notified to the CPU 122 or 122 or the CPU 1003 of the core unit 10, the default image processing mode of each is set.

Next, the document feeding device 101 of the reader unit 1 is checked for the presence or absence of a document (step S1). If the determination here is NO, this process ends, but if the determination is YES, the document feeding is performed. Start feeding documents from the feeder 101,
The document is read by the reader unit 1 (step S2). Then, the read original image is subjected to image processing according to a predetermined setting (step S3).

Further, when the read signal passes through the core unit 10, for example, the image processing unit of the core unit 2
Predetermined image processing is performed via the digitization circuit 1012.
After these image processes, the image signal is transferred to a desired block of the fax unit 4, file unit 5, computer interface unit 7, and image memory unit 9.

In the present embodiment, the case where the image signal is transferred to the file unit 5 will be described as an example, but the transfer destination is not limited to the file unit 5.

The image signal transferred to the file unit 5 via the core unit 10 is stored in the memory A506. CPU
516 checks the image information stored in the memory A 506 to check whether the read document is a mark sheet (step S4).

FIG. 11 shows an example of a mark sheet, and reference numerals 1101 to 1106 are identification marks of the mark sheet,
Reference numerals 1107 to 1113 are mark fields for setting various modes using a mark sheet.

In step S5, it is determined by the identification of the CPU 516 whether the document read is a mark sheet. If it is determined that the document is a mark sheet, the process proceeds to step S6, where the CPU 122 and the CP are connected.
The U 516 communicates, and the CPU 516 receives the image processing mode for the read original. And CPU5
Step 16 determines whether or not the image processing mode for the read document (mark sheet) is optimum for reading the mark sheet (step S6).

For example, the binarization circuit 1012 of the core unit 10
When pseudo halftone processing is being performed in
Fine dots are distributed on the read image, and unintended points are plotted in the mark columns 1107 to 1113.

If the determination in step S6 is NO, in step S7, CPU 516 to CPU 10
03 is notified by communication of the setting of the image processing mode most suitable for reading the mark sheet. CPU1003
Sets the image processing mode as described above, and further notifies the CPU 122 of the optimum image processing mode setting for reading the mark sheet.
Sets the image processing mode as described above.

Next, in step S8, the reader 1 reads the mark sheet, and the read mark sheet image is subjected to the optimum image processing for reading the mark sheet set in step S7. (Step S9).

The mark sheet image thus read is read by the CPU 516 in the mark columns 1107 to 11
13 is read (step S10). Then, the document set on the document table 102 is discharged (step S11).

In step S5, if the mark sheet determination result is NO, the process proceeds to step S12.
After the processing for the normal image is performed, step S11
Proceed to the document discharge process. In step S6,
Even when the default image processing mode is optimum for reading the mark sheet, that is, when the determination there is YES, the process proceeds to step S11.

As described above, according to this embodiment,
When a sheet medium such as a mark sheet is read as a document, by optimizing the reading mode of the medium and performing the reading, it is possible to read the sheet medium with the smallest erroneous determination.

In the above embodiment, the mark sheet identifying marks 1101 to 1106 are used in the mark sheet determination in step S4 of FIG. Further, when the pseudo halftone process is performed, white level fine dots may occur in the mark sheet identification marks 1101 to 1106. In this case, the recognition rate can be improved by lowering the determination level in step S4.

That is, the mark sheet is recognized with the determination level lowered, and the optimum image processing mode for mark sheet recognition is set in the same procedure as in the above embodiment to read the mark sheet. Then, after that, by performing the recognition again, even if the mark sheet is read in the unintended image processing mode, the recognition level can be lowered by recognizing the mark sheet, and the erroneous determination can be reduced.
In addition, it is possible to reliably recognize the mark sheet.

The present invention may be applied to a system composed of a plurality of devices or an apparatus composed of a single device. Further, it goes without saying that the present invention can be applied to the case where it is achieved by supplying a program to a system or an apparatus.

[0146]

As described above, according to the present invention,
By recognizing the sheet medium, performing image processing in the optimum reading mode and reading the sheet medium, it is possible to reduce erroneous determination in reading.

According to another aspect of the invention, the sheet medium can be surely recognized by changing the document identification level.

[0148]

[Brief description of drawings]

FIG. 1 is a block diagram showing an overall configuration of an image input / output device according to an embodiment of the present invention.

FIG. 2 is a structural cross-sectional view showing a configuration of a reader unit and a printer unit according to an embodiment.

FIG. 3 is a block diagram illustrating a configuration of an image processing unit of a reader unit.

FIG. 4 is a block diagram showing a configuration of a core unit and a connection with each unit.

FIG. 5 is a block diagram showing a configuration of a fax unit.

FIG. 6 is a block diagram showing a configuration of a file unit.

FIG. 7 is a block diagram showing a configuration of a computer interface unit.

FIG. 8 is a block diagram showing a configuration of a formatter unit.

FIG. 9 is a block diagram showing a configuration of an image memory unit.

FIG. 10 is a flowchart showing a mark sheet recognition procedure in the embodiment.

FIG. 11 is a diagram showing an example of a mark sheet.

[Explanation of symbols]

 1 Reader Part 2 Printer Part 3 External Device 4 Fax Part 5 File Part 7 Computer Interface Part 8 Formatter Part 9 Image Memory Part 10 Core Part 11 Hard Disk 12 Computer 13 Telephone Line 14 Cable 520 External Storage Device

Claims (6)

[Claims] 1. An image input / output device for visually outputting a document image optically scanned and read, and image processing means for performing image processing on the document image in a first processing mode, and the image processing. Identification means for identifying whether the document is a specific sheet medium based on the result, and reading the sheet medium in the second processing mode when the document is identified as the sheet medium An image input / output device comprising: means and means for outputting the image information read by the reading means. 2. The image input / output device according to claim 1, wherein the identification means identifies the document based on a predetermined identification level, and the identification level is variable. 3. The image input / output device according to claim 1, wherein the identification unit identifies the sheet medium based on an identification mark on the original. 4. The image input / output device according to claim 1, wherein the sheet medium is a mark sheet. 5. The image input / output apparatus according to claim 1, further comprising communication means for transmitting the document image processed by the image processing means to the outside of the image input / output apparatus. 6. The image input / output apparatus according to claim 1, further comprising input means for inputting the original image from outside the image input / output apparatus.