JPH0888761A - Image reader and image read method - Google Patents

Abstract

PURPOSE: To obtain an image reader in which a rotation direction of a rear side image in response to the direction of an original image and a filing direction is decided and the rear side image is processed in a correct direction even to any double side original. CONSTITUTION: In order to read the image of a double side original, a core section CPU 1003 commands the execution of scanning to a reader section. The received front side image information is fed to a facsimile section 4. When the processing of the front side is finished, the facsimile section 4 informs the end of processing to the core section CPU 1003 prior to the processing of the rear side, the core section CPU 1003 decides the rotation angle of the image to be 180 deg. based on a setting (port rate/filing length) and an original size (A4R) designated by the operation section. The core section 1003 sets the rotation by 180 deg. and sends the image information rotated by 180 deg. to the facsimile section 4. Even a double side original of any form is sent by a facsimile signal without mistake in the direction of the image.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus and an image reading method for reading a double-sided original by reversing and feeding the original.

[0002]

2. Description of the Related Art Conventionally, in an image reading apparatus having such a reverse document feeder and a function of rotating a read image, a back side image is automatically rotated when a double-sided document is read and handled as a single-sided document. It is known to let it be processed.

[0003]

However, in the conventional image reading apparatus, since the rotation direction of the image is uniquely determined by the orientation of the original, the actual orientation of the image (portrait and landscape). In addition, there is a problem that depending on the binding direction of both sides (longitudinal binding and short edge binding), the image cannot be rotated in the correct direction.

Therefore, the present invention determines the rotation direction of the front or back image according to the orientation of the original image and the binding direction,
An object of the present invention is to provide an image reading apparatus that can handle an image in a correct direction for any double-sided original.

[0005]

In order to achieve the above object, an image reading apparatus according to claim 1 of the present invention is an image reading apparatus which reads a double-sided original and treats it as a single-sided original, and feeds the double-sided original. The reverse document feeding means, the reading means for reading the double-sided original, the rotating means for rotating the read image, the storing means for storing the rotated image, the orientation of the image of the original and the binding direction. A designating unit for designating and a rotation amount determining unit for determining the rotation amount of the image according to the orientation and the binding direction of the designated image are provided.

An image reading device according to a second aspect of the present invention is the image reading device according to the first aspect.
In the image reading apparatus according to the above, an image communication unit for transmitting the read image via a telephone line is provided.

An image reading apparatus according to a third aspect is the image reading apparatus according to the first aspect.
In the image reading apparatus according to the above, an external storage unit for storing the read image is provided.

An image reading apparatus according to a fourth aspect is the image reading apparatus according to the first aspect.
The image reading apparatus according to the present invention further comprises a transfer means for transferring the read image to an external device via an interface.

An image reading method according to a fifth aspect is an image reading method of reading a double-sided original and treating it as a single-sided original, feeding the double-sided original, reading the original, rotating the read image, and rotating the original. The stored image is stored, the orientation and binding direction of the image of the original are designated, and the rotation amount of the image is determined according to the designated orientation and binding direction of the image.

[0010]

In the image reading apparatus according to the first aspect of the present invention, when a double-sided original is read and handled as a single-sided original, the reverse original feeding means feeds the double-sided original and the reading means reads the double-sided original. Rotating the read image by the rotating means, storing the rotated image in the storage means, designating the orientation and binding direction of the image of the original by the designating means, and designating the orientation and binding direction of the designated image Accordingly, the rotation amount determining means determines the rotation amount of the image.

In the image reading device according to the second aspect, the image read by the image communication means is transmitted through the telephone line.

In the image reading apparatus according to the third aspect, the read image is stored by the external storage means.

In the image reading apparatus according to the fourth aspect, the image read by the transfer means is transferred to the external device through the interface.

[0014]

EXAMPLES Next, examples of the image reading apparatus of the present invention will be described. The image reading apparatus of this embodiment is applied to a facsimile machine. FIG. 1 is a block diagram showing an electrical configuration of a facsimile machine. In the figure, 1 is an image input device for converting a document into image data (hereinafter referred to as a reader unit), 2 has a plurality of types of recording paper cassettes, and image data is converted into a visible image on the recording paper by a print command. An image output device (to be referred to as a printer hereinafter) 3 for outputting is an external device electrically connected to the reader unit 1 and has various functions. The external device 3 includes a fax unit 4, a file unit 5, an external storage device 6 connected to the file unit 5, and a computer 1 as circuits for executing various functions.
2, an image memory unit 9 for temporarily storing the information sent from 2, and a core unit 1 for controlling the above-mentioned functions.
It has 0. 11 is a hard disk, 12 is a workstation (WS), personal computer (P
C) is a computer having a function, and 13 is a telephone line. The function of each unit will be described in detail below.

[Description of Reader Unit] FIG. 2 is an explanatory diagram showing the configurations of the reader unit and the printer unit. In the figure,
The originals accumulated on the original feeding device 101 are sequentially conveyed one by one onto the original glass surface 102. When the document is conveyed, the lamp of the scanner unit 103 is turned on and the scanner unit 104 moves to irradiate the document. The reflected light of the original passes through the lens 108 via the mirrors 105, 106 and 107, and then the CCD image sensor unit 109.
(Hereinafter referred to as CCD).

Next, the image processing in the reader unit 1 will be described in detail. FIG. 3 is a block diagram showing an electrical configuration of the reader unit 1. In the figure, the image information input to the CCD 109 is photoelectrically converted here and converted into an electric signal. The color information from the CCD 109 is amplified by the next amplifiers 110R, 110G and 110B according to the input signal level of the A / D converter 111. A / D converter 1
The output signal from 11 is input to the shading circuit 112, where the light distribution unevenness of the lamp 103 and the sensitivity unevenness of the CCD are corrected. The signal from the shading circuit 112 is input to the Y signal / 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 by the following equation to obtain a Y signal. Y = 0.3R + 0.6G + 0.1B,
Further, it has a color detection circuit that separates the R, G, and B signals into seven colors and outputs the signals for each color. The output signal from the Y signal generation / color detection circuit 113 is input to the scaling / repeat circuit 114. A scaling circuit 114 for scaling in the sub-scanning direction according to the scanning speed of the scanner unit 104.
To change the magnification in the main scanning direction. Further, the repeat circuit 114 can output a plurality of same images. The contour / edge enhancement circuit 115 obtains edge enhancement and contour information by enhancing high frequency components of the signal from the scaling / repeat circuit. Contour / edge enhancement circuit 11
The signal from 5 is applied to the marker area determination / contour generation circuit 11
6 is input to the patterning / thickening / masking / trimming circuit 117.

Marker area determination / contour generation circuit 116
Reads a portion of a document written with a marker pen of a designated color, generates contour information of the marker, and the next patterning / thickening / masking / trimming circuit 117 thickens or masks the contour information. Trimming. 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 and trimming circuit 117 is input to a laser driver circuit, and various processed signals are converted into signals for driving a laser. The signal from the laser driver is input to the printer 2 and image formation is performed as a visible image.

Next, the external I / F switching circuit 119 for interfacing (I / F) with an external device will be described. When the external I / F switching circuit outputs the image information from the reader 1 to the external device 3, the external I / F switching circuit is patterned.
The image information from the thickening / masking / trimming circuit 117 is output to the connector 120. When the reader 1 inputs image information from the external device 3, the external switching circuit 119 inputs the image information from the connector 120 to the Y signal generation / color detection circuit 113.

Each of the above-mentioned image processings is performed according to the instruction of the CPU 122, and the area generation circuit 121 generates various timing signals necessary for the above-mentioned image processing from the value set by the CPU 122. Also, communication with the external device 3 is performed using the communication function built in the CPU 122. The SUB / CPU 123 controls the operation unit 124 and communicates with the external device 3 by using the communication function built in the SUB / CPU.

[Description of Printer Unit] The signal input to the printer 2 is converted into an optical signal by the exposure control unit 201, and the photoconductor 202 is illuminated according to the image signal. The latent image formed on the photoconductor 202 by the irradiation light is developed by the developing device 203. The transfer sheet is conveyed from the transfer sheet stacking section 204 or 20 at the same timing as the latent image, and the developed image is transferred 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 discharged to each pin when the sort function is working in the sorter 220 or to the highest pin of the sorter when the sort function is not working.

[Description of External Device] The external device 3 is the reader 1.
Is connected with a cable, and the core portion in the external device 3 controls signals and controls each function. The external device 3 includes a fax unit 4 for transmitting and receiving a fax, a file unit 5 for converting various document information into electric signals and storing the same, a formatter unit 8 for developing code information from a computer into image information, and an interface with the computer. It comprises a computer interface section 7 for performing, an image memory section 9 for accumulating information from the reader section 1 and temporarily accumulating information sent from a computer, and a core section 10 for controlling the above respective functions. . The function of each unit will be described in detail below.

[Description of Core Portion] FIG. 4 is a block diagram showing an electrical configuration of the core portion 10. The connector 1001 of the core unit 10 contains four types of signals.
57 is an 8-bit multi-valued video signal. Signal 1055
Is a control signal for controlling the video signal. Signal 1051
And the signal 1052 are subjected to communication protocol processing by the communication IC 1002, and the CPU 1003 via the CPU bus 1053.
Communicate communication information to.

The signal 1057 is a bidirectional video signal line, and it is possible for the core unit 10 to receive information from the reader 1 and to output information from the core unit 10 to the reader unit 1. Signal 1057 is connected to buffer 1010, where it is separated from bidirectional signals into unidirectional signals 1058 and 1070.

A signal 1058 is an 8-bit multivalued video signal from the reader 1 and is input to the LUT 1011 in the next stage. The LUT 1011 converts the image information from the reader 1 into a desired value by using a look-up table. L
The output signal 1059 from the UT 1011 is the binarization circuit 10
12 or the selector 1013. The binarization circuit 1012 has a simple binarization function for binarizing a multi-valued signal 1059 at a fixed slice level, and a binarization by a variable slice level in which the slice level changes from the values of pixels around the pixel of interest. It has a function and a binarization function by the error diffusion method. Binarized information is 00H when "0",
When it is "1", it is converted into a multilevel signal of FFH and input to the selector 1013 at the next stage.

Output signal 1060 from 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 and 10, respectively.
06, 1007, 1008, 1009 through the core portion 1
The signal 1064 input to 0 and the output signal 1060 of the selector 1013 are selected by the instruction of the CPU 1003.

The output signal of the selector 1014 is 1061.
Is input to the rotation circuit 1015 or the selector 1016. The rotation circuit 1015 adds +90 to the input image signal.
It has the function of rotating by -90 degrees and +180 degrees. The rotation circuit 1015 converts the information output from the reader unit 1 into 2
After being converted into a binary signal by the digitization circuit 1012, the information from the reader is stored in the rotation circuit 1015.

Next, in response to an instruction from the CPU 1003, the rotation circuit 1015 rotates and reads the stored information. The selector 1016 outputs the output signal 1 of the rotation circuit 1015.
062 or the input signal 1061 of the rotation circuit 1015 is selected, and as the signal 1063, the connector 1005 with the fax unit 4 and the connector 100 with the file unit 5 are selected.
6 is a synchronous 8-bit unidirectional video bus for transferring image information to the computer interface unit 7, the formatter unit 8 and the image memory unit 9. 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. It is the video control circuit 1004 that controls the synchronous bus of the signal 1063 and the signal 1064, and the control is performed by the output signal 1056 from the video control circuit 1004. Other signals 1054 are connected to the connectors 1005 to 1009, respectively. The signal 1054 is a bidirectional 16-bit CPU bus, and exchanges data commands asynchronously. 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 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 1016 is C
The signal 1064 is input to the rotation circuit 1015 at the next stage according to an instruction from the PU 1003.

The selector 1017 selects the signal 1063 and the signal 1064 according to an instruction from the CPU 1003. The output signal 1065 of the selector 1017 is input to the pattern matching 1018 and the selector 1019. The pattern matching 1018 performs pattern matching of the input signal 1065 with a predetermined pattern, and when the patterns match, outputs a predetermined multi-valued signal to the signal line 1066. If they do not match in the pattern matching, the input signal 1065 is output as the signal 1066.

The selector 1019 outputs the signals 1065 and 1
066 is selected by the instruction of the CPU 1003. The output signal 1067 of the selector 1019 is the LUT 1020 of the next stage.
To enter.

The LUT 1020 is used to output the image information to the printer 2 according to the characteristics of the printer.
Convert 67. The selector 1021 uses the LUT 1020.
Output signal 1068 and signal 1065 are selected by the instruction of CPU 1003. The output signal of the selector 1021 is input to the expansion circuit 1022 at the next stage.

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 expansion method is a linear interpolation method of the first order. The output signal 1070 of the expansion circuit 1022 is input to the buffer 1010.

Signal 1070 input to buffer 1010
Becomes a bidirectional signal 1057 according to an instruction from the CPU 1003, is sent to the printer 2 via the connector 1001, and is printed out. Hereinafter, the signal flow of the core unit and each unit will be described.

[Operation of Core Unit According to Information of Fax Unit 4] A case of outputting information 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 outputs a document scan command. The reader unit 1 outputs the image information to the connector 120 when the scanner unit 104 scans the document according to this command. The reader unit 1 and the external device 3 are connected by a cable, and 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 input to the buffer 1010 through the multi-level 8-bit signal line 1057.
The buffer circuit 1010 inputs the bidirectional signal 1057 as a unidirectional signal to the LUT 1011 via the signal line 1058 according to an instruction from the CPU. 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 of the LUT 1011 is input to the binarization circuit 1012 at the next stage. The binarization circuit 1012 converts the 8-bit multilevel signal 1059 into a binarized signal. Two
The output signal of the binarization circuit 1012 is input to the rotation circuit 1015 or the selector 1016 via the selectors 1013 and 1014. Output signal 1 of rotating circuit 1015
062 is also input to the selector 1016, and the selector 101
6 selects either the signal 1061 or the signal 1062. The signal is selected by the CPU 1003 on the CPU bus 105.
It is determined by communicating with the fax unit 4 via the communication unit 4. The output signal 1063 from the selector 1016 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 1064 via the connector 1005. The signal 1064 is the selector 1014 and the selector 1.
Enter it in 017. When the image at the time of fax reception is rotated and output to the printer 2 according to the instruction of the CPU 1003, the rotation circuit 1015 rotates the signal 1064 input to the selector 1014. The output signal 1062 from the rotation circuit 1015 is the selector 1016 and the selector 101.
7 to the pattern matching 1018. The signal 1064 is output as the signal 1065. CPU1003
When the image at the time of fax reception is to be output to the printer 2 as it is, the signal 1064 input to the selector 1017 is input to the pattern matching 1018.

The pattern matching 1018 has a function of smoothing the rattling of the image when the fax is received. The pattern-matched signal is sent to the selector 101.
9 into the LUT 1020. LUT1020
Uses the CPU of the table of the LUT 1020 to output the received fax image to the printer 2 at a desired density.
It can be changed in 1003. The output signal 1068 of the LUT 1020 is input to the expansion circuit 1022 via the selector 1021.

The enlargement circuit 1022 has two values (00H,
FFH) 8-bit multi-value is expanded by a linear interpolation method of the first order. An 8-bit multi-valued signal having many values from the expansion circuit 1022 is sent to the reader unit 1 via the buffer 1010 and the connector 1001. The reader unit 1 inputs this signal to the external I / F switching circuit 119 via the connector 120. The external I / F switching circuit 119 inputs the signal from the fax unit 4 to the Y signal generation / color detection circuit 113. Y signal generation / color detection circuit 11
The output signal from the printer 3 is processed by the printer 2 after the above-mentioned processing.
And the image is formed on the output paper.

[Operation of core section based on information of file section]
The case of outputting information to the file unit 5 will be described.
The CPU 1003 is a reader unit 1 via the communication IC 1002.
The CPU 122 communicates with the CPU 122 to output a document scanning command. The reader unit 1 outputs image information to the connector 120 when the scanner unit 104 scans a document according to this command.

The reader unit 1 and the external device 3 are connected by a cable, 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 becomes a unidirectional signal 1058 by the buffer 1010. The signal 1058 which is a multi-valued 8-bit signal is converted into a desired signal by the LUT 1011. The output signal 1059 of the LUT 1011 is input to the connector 1006 via the selector 1013, the selector 1014, and the selector 1016. That is, the binarization circuit 1
012 and the rotation circuit 1015 are not used, and the 8-bit multi-value data is transferred to the file unit 5 as it is. CPU1003
When filing a binarized signal by communicating with the file unit 5 via the CPU bus 1054, the functions of the binarization circuit 1012 and the rotation circuit 1015 are used.
The binarization process and the rotation process are the same as those in the case of the above-mentioned fax unit, and will be omitted.

Next, a case of receiving information from the file section 5 will be described. Image information from the file unit 5 is input as a signal 1064 to the selector 1014 or the selector 1017 via the connector 1006. In the case of 8-bit multi-valued filing, the processing is carried out to the selector 1017, and in the case of binary filing, the processing is the same as the fax, and therefore the description thereof is omitted. In the case of multi-value filing, the output signal 1065 from the selector 1017 is sent to the LU via the selector 1019.
Input in T1020. In the LUT 1020, a look-up table is created according to an instruction from the CPU 1003 in accordance with a desired print density. The output signal 1068 from the LUT 1020 is input to the expansion circuit 1022 via the selector 1021. The 8-bit multi-level signal 1070 expanded to a desired expansion ratio by the expansion circuit 1022 is sent to the reader unit 1 via the buffer 1010 and the connector 1001. The information in the file section sent to the reader section 1 is output to the printer 2 in the same manner as the above-mentioned fax, 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 a computer connected to the external device 3. It has SCSI, RS232C, and Centronics as a computer interface. The computer interface unit 7 has the above three types of interfaces, and information from each interface is transmitted via the connector 1007 and the data bus 1054.
It is sent to the CPU 1003. The CPU 1003 performs various controls based on the contents sent.

[Operation of Core Unit According to Information of Formatter Unit] The formatter unit 8 has a function of expanding command data such as a document file sent from the computer interface unit 7 into image data.
The CPU 1003 is a computer interface unit 7.
When it is determined that the data sent from the data bus 1054 via the data bus 1054 is data relating to the formatter unit, the data is transferred to the formatter unit via the connector 1008. The formatter unit 8 develops the transferred data in the memory as a visible image. Next, a procedure for receiving information from the formatter unit 8 and forming an image on an output sheet will be described. Image information from the formatter unit 8 is sent to the signal line 1064 via the connector 1008.
It is transmitted as a multi-valued signal having one value (00H, FFH). The signal 1064 is input to the selector 1014 and the selector 1017. The selectors 1014 and 1017 are controlled by the instruction of the CPU 1003. The subsequent steps are the same as in the case of the above-mentioned fax and will be omitted.

[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 outputs a document scan command. The reader unit 1 outputs the image information to the connector 120 when the scanner unit 104 scans the document according to this command. The reader unit 1 and the external device 3 are connected by a cable, 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 sent to the LUT 1011 via the multilevel 8-bit signal line 1057 and the buffer 1010. The output signal 1059 of the LUT 1011 is the selectors 1013, 1014, 101.
6, to the image memory unit 9 via the connector 1009,
Transfer multi-valued image information.

The image information stored in the image memory unit 9 is transferred to C via the CPU bus 1054 of the connector 1009.
It is sent to the PU 1003. The CPU 1003 includes an image memory unit 9 in the computer interface unit 7 described above.
Transfer the data sent from. The computer interface unit 7 transfers to the computer by a desired interface among the above three types of interfaces (SCSI, RS232C, Centronics).

Next, the case of receiving information from the image memory unit 9 will be described. First, image information is sent from the computer to the core unit 10 via the computer interface unit 7. CPU 1003 of core unit 10
Determines that the data sent from the computer interface unit 7 via the CPU bus 1054 is the data related to the image memory unit 9, the connector 1
It is transferred to the image memory unit 9 via 009. Next,
The image memory unit 9 outputs the 8-bit multilevel signal 1064 via the connector 1009 to the selector 1014 and the selector 1
It is transmitted to 017. Selector 1014 or Selector 1
The output signal from 017 is output to the printer 2 in the same manner as the above-mentioned fax according to an instruction from the CPU 1003, and an image is formed on an output sheet.

[Explanation of Fax Unit] FIG. 5 shows the fax unit 4.
3 is a block diagram showing the electrical configuration of FIG. The fax unit 4 is connected to the core unit 10 by a connector 400 and exchanges various signals.

Binary information from the core unit 10 is stored in the memory A40.
5 to the memory D 408, when the signal 453 from the connector 400 is stored in the memory controller 4
04, the memory A405, the memory B406, the memory C407, and the memory D under the control of the memory controller.
Any one of 408 or two sets of memories connected in cascade.

The memory controller 404 is a CPU 412.
The mode for exchanging data with the memory A 405, the memory B 406, the memory C 407, the memory D 408 and the CPU bus 462, and the mode for exchanging data with the CODEC bus 463 of the CODEC 411 having an encoding / decoding function. The contents of A405, memory B406, memory C407, and memory D408 are D
The scaling circuit 403 is controlled by the MA controller 402.
From the memory A405 to the memory D408, and a mode in which binary video input data 454 is stored in any of the memories A405 to D408 under the control of the timing generation circuit 409. It has five functions in a mode of outputting the memory contents to the read signal line 452.

The memory A 405, the memory B 406, the memory C 407, and the memory D 408 each have a capacity of 2 Mbytes and store an image corresponding to A4 at a resolution of 400 dpi. The timing generation circuit 409 uses the connector 400.
Are connected to the signal line 459, and control signals (HSYNC, HEN, VSYNC, VE) from the core unit 10 are connected.
N), it generates signals to accomplish the following two functions:

The first is a function of storing the image signal from the core unit 10 in one of the memories A405 to D408 or two memories, and the second is the function of storing one of the memories A405 to D408. From one to the read signal line 452. The dual port memory 410 is connected to the CPU 1003 of the core unit 10 via a signal line 461 and the CPU 412 of the fax unit 4 via a signal line 462. Each CP
U exchanges commands via this dual port memory 410. The SCSI controller 413 is connected to the hard disk 11 (see FIG.
Interface).

Data at the time of fax transmission and at the time of fax reception are stored. CODEC 411 is memory A405
-After reading the image information stored in any of the memories D408 and performing encoding by a desired method of the MH, MR, and MMR methods, the memories A405 to D408
Is stored as encoded information.

Further, the coded information stored in the memories A405 to D408 is read out and MH, MR, MM are read.
After decoding in the desired method of the R method, the memory A4
05-stored in any of the memories D408 as decryption information, that is, image information.

The MODEM 414 has a function of modulating the coded information from the hard disk 11 connected to the CODEC 411 or the SCSI controller 413 for transmission on the telephone line, and demodulating the information sent from the NCU 415 to obtain the coded information. Converted to CODEC411
Alternatively, the encoded information is transferred to the hard disk 11 connected to the SCSI controller 413. NCU41
Reference numeral 5 is directly connected to a telephone line and exchanges information with an exchange installed in a telephone station by a predetermined procedure.

Next, an embodiment of fax transmission will be described. The binary image signal from the reader 1 is input from the connector 400 and reaches the memory controller 404 through the signal line 453. The signal 453 is stored in the memory A 405 by the memory controller 404. The timing to be stored in the memory A 405 is based on the timing signal 459 from the reader 1
9 is generated. The CPU 412 is the memory controller 4
04 memories A405 and B406 to CODEC411
Connected to the bus line 463. The CODEC 411 reads the image information from the memory A 405, performs the encoding by the MR method, and writes the encoded information in the memory B 406. When the CODEC 411 encodes the A4 size image information, the CPU 412 causes the memory controller 404
Memory B 406 of FIG. CP
The U 412 sequentially reads the coded information from the memory B 406 and transfers it to the MODEM 414. MODEM4
14 modulates the encoded information and sends the fax information over the telephone line via the NCU.

Next, an embodiment of fax reception will be described. The information sent from the telephone line is NCU41
5 and connect to the telephone line by the NCU 415 according to a predetermined procedure. The information from NCU 415 enters MODEM 414 and is demodulated.

The CPU 412 stores the information from the MODEM 414 in the memory C407 via the CPU bus 462. When the information of one screen is stored in the memory C407, C
The PU 412 controls the memory controller 404 to cause the data line 457 of the memory C 407 to be CODE.
Connect to line 463 of C411.

The CODEC 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 the CPU 10 of the core unit 10 via the dual port memory 410.
03, and makes settings for printing out an image from the memory D408 to the printer 2 through the core section. When the 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. The memory controller 404 reads the image information from the memory D 408 in synchronization with the signal from the timing generation circuit 409, transmits the image information to the signal line 452, and the connector 400
Output to. The description up to the output from the connector 400 to the printer 3 has been given in the description of the core section, and will be omitted.

[Description of Computer Interface Unit 7] FIG. 6 is a block diagram showing the configuration of the computer interface unit 7. The connector A700 and the connector B701 are connectors for SCSI interface. The connector C702 is a Centronics interface connector. Connector D703 is RS2
32C interface connector. Connector E
Reference numeral 707 is a connector for connecting to the core unit 10.

The SCSI interface has two connectors (connector A700, connector B701),
When connecting a device having a plurality of SCSI interfaces, a connector A700 and a connector B701 are used for cascade connection. When the external device 3 and the computer are connected one-to-one, the connector A700 and the computer are connected with a cable, and the connector B701 is connected with a terminator, or the connector B701 and the computer are connected with a cable and the connector A700 is connected with a terminator. Connect.

Connector A700 or Connector B701
Information input from the SC via the signal line 751
SI / I-F-A704 or SCSI I / F-B
Input to 708. The SCSI I / F-A 704 or the SCSI I / F-B 708 sends data to the signal line 75 after performing the procedure according to the SCSI protocol.
4 to the connector 707E. Connector E7
07 is connected to the CPU bus 1054 of the core unit 10. The CPU 1003 of the core unit 10 is connected to the CPU bus 1054.
4 to SCSI I / F connector (connector A70
0, the information input to the connector B701) is received.

The RS232C interface is connected to connector D703 and is connected to RS2 via signal line 753.
32. Input to I / F 706. RS232 / I / F
706 receives data according to the procedure of the determined protocol, and the connector E70 is received via the signal line 754.
Output to 7. 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 the CPU bus 1054 to RS232C I / F
The information input to the connector (connector D703) is received. RS from data from the CPU 1003 of the core unit 10
When outputting to the 232C I / F connector (connector D703), the procedure is reversed.

[Description of Formatter Unit 8] FIG. 7 is a block diagram showing the configuration of the formatter unit 8. When the data from the computer interface unit 7 described above is discriminated by the core unit 10 and is data relating to the formatter unit 8, the CPU 1003 of the core unit 10 causes the connector 1008 and the formatter unit 9 of the core unit 10.
The data from the computer is transferred to the dual port memory 803 via the connector 800 of FIG. The CPU 809 of the formatter unit 8 receives the code data sent from the dual port memory 803 to the computer. The CPU 809 sequentially develops this code data into image data, and transfers the image data to the memory A 806 and the memory B 807 via the memory controller 808. The memory A 806 and the memory B 807 each have a capacity of 1 Mbyte, and one memory (memory A 806 or memory B 807) can handle up to A4 paper size at a resolution of 300 dpi. A at a resolution of 300 dpi
In the case of handling up to three sheets, the memory A806 and the memory B807 are connected in cascade to develop the image data.

The memory control is performed by the memory controller 808 according to an instruction from the CPU 809.
Further, when it is necessary to rotate characters or figures when expanding the image data, after rotation by the rotation circuit 804,
Transfer to memory A 806 or memory B 807. When the expansion of the image data in the memory A806 or the memory B807 is completed, the CPU 809 causes the memory controller 8
08 and controls the data bus line 85 of the memory A806.
8 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 communicates with the CPU 1003 of the core unit 10 via the dual port memory 803 to set the mode in which the image information is output from the memory A 806 or the memory B 807. CP of core part 10
The U 1003 sets the print output mode in the CPU 122 using the communication function built in the CPU 122 of the reader unit 1 via the communication circuit 1002 in the core unit 10. The CPU 1003 of the core unit 10 is the connector 100
8 and the timing generation circuit 802 is activated via the connector 800 of the formatter unit 8. The timing generation circuit 802 sends the memory A 806 or the memory B 806 to the memory controller 808 according to the signal from the core unit 10.
A timing signal for reading the image information from 807 is generated.

The image information from the memory A 806 or the memory B 807 is input to the memory controller 808 via the signal line 858. The output image information from the memory controller 808 is the signal line 851 and the connector 8
00 to the core unit 10. The output from the core unit 10 to the printer 2 has been described in the core unit 10 and will be omitted.

Next, a process of reading a double-sided original and outputting it as a single-sided image to the outside, which is a characteristic part of the image reading apparatus of this embodiment, will be described below. In this embodiment, a case where the read image is transmitted by facsimile via a telephone line will be described.

FIG. 8 is an explanatory view showing the front and back sides of a double-sided original. The inverted document feeder 101 inverts the document around the side of the document in the main scanning direction as an axis. A4 paper double-sided original 2001
When sending (portrait, long-edge binding) by facsimile, set the document widthwise to the main scanning direction (A4R
Orientation), if the original is flipped and the image on the back side read is sent as is, an upside-down image will be sent. FIG. 9 is an explanatory diagram showing an upside down image. In order to avoid this, the following processing is performed in this embodiment.

11 and 12 are flowcharts showing the document reading processing routine. In the document reading apparatus, first, the manuscript reading mode (single-sided / double-sided), image orientation (portrait / landscape), and
Set the binding direction (long / short) on both sides (step S
101). In this embodiment, double-sided / portrait / longitudinal binding is set. Next, when the transmission start key is pressed, the setting contents are notified from the operation unit 124 to the core CPU 1003 together with an instruction to start facsimile (FAX) transmission (step S102).
The core CPU 1003 instructs the fax unit 4 to start transmission, and instructs the reader unit 1 to start document reading in the duplex mode (step S103). The reader unit 1 pulls in the document (step S104), detects the paper size (A4R) of the document, and notifies the core unit CPU 1003 (step S105).

When the CPU 1003 of the core unit instructs the reader unit 1 to execute the scan (step S106), the reader unit 1 starts scanning the document and the image information of the front surface is input to the core unit 10 via the connector 1001. (Step S107).

The connector 10 is then routed through the above-mentioned route.
The image information is sent to the fax unit 4 via 05. When the surface treatment is completed, the fax unit 4 to the core unit CPU 10
03 is notified of the end of processing.

The core CPU 1003 starts the back side image processing (step S 108), and the operation unit 12
The rotation direction of the image is determined based on the settings (portrait / longitudinal binding) designated from No. 4 and the document size (A4R) (step S109). In the present embodiment, when double-sided / portrait / long-edge binding is set, it is determined that the rotation is 180 degrees. The core unit CPU 1003 sets the rotation circuit to rotate 180 degrees, executes the rotation process, and sends the image information rotated through the same route as the above-described procedure to the fax unit 4 (step S111). FIG. 10 is an explanatory diagram showing an image that has been rotated by 180 degrees.

Next, a case will be described in which a similar original is placed with its longitudinal direction in the main scanning direction (A4 direction). In this case, if the image is rotated by 90 degrees on both the front and back sides, the image is transmitted in the correct direction, and therefore both image information are rotated by 90 degrees and sent to the fax unit 4.

As described above, according to the image reading apparatus of this embodiment, the orientation and binding direction of an image are set, and the image is rotated according to the orientation, so that the image can be printed on a double-sided original of any form. It becomes possible to perform facsimile (FAX) transmission without erroneous orientation.

The present invention is also applicable to a copying apparatus that prints a read image on paper, an image storage apparatus that stores the image in a storage device such as a MOD, and an image reading apparatus that outputs the image to an external computer. Easy to apply.

[0078]

According to the image reading apparatus of the first aspect of the present invention, when a double-sided original is read and handled as a single-sided original, the double-sided original is fed by the reverse original feeding means.
The double-sided original is read by the reading means, the read image is rotated by the rotating means, the rotated image is stored by the storage means, and the orientation and binding direction of the image of the original are designated by the designating means, and the designation is performed. The rotation amount determining means determines the rotation amount of the image according to the orientation and the binding direction of the image thus formed. Therefore, the orientation of the image and the binding direction are set, and the image is rotated in accordance with the rotation amount. It is possible to send a facsimile to an original without making an error in the orientation of the image.

According to the image reading apparatus of the second aspect, since the image read by the image communication means is transmitted through the telephone line, the image of the double-sided original is sent to the facsimile apparatus at a remote place using the telephone line. You can send.

According to the image reading apparatus of the third aspect, since the read image is stored by the external storage means,
Images of double-sided originals can be stored.

According to the image reading apparatus of the fourth aspect, since the read image is transferred to the external device through the interface by the transfer means, the image read by the external device can be processed.

According to the image reading apparatus of the fifth aspect, in the image reading method of reading a double-sided original and treating it as a single-sided original, the double-sided original is fed, the original is read, and the read image is rotated, The rotated image is stored, the orientation and binding direction of the image of the original are designated, and the rotation amount of the image is determined according to the designated orientation and binding direction of the image. By setting the direction and rotating the image accordingly, it is possible to handle a double-sided original of any form without erroneous orientation of the image.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a facsimile apparatus.

FIG. 2 is an explanatory diagram showing configurations of a reader unit and a printer unit.

FIG. 3 is a block diagram showing an electrical configuration of the reader unit 1.

FIG. 4 is a block diagram showing an electrical configuration of the core section 10.

FIG. 5 is a block diagram showing an electrical configuration of a fax unit 4.

FIG. 6 is a block diagram showing a configuration of a computer interface unit 7.

FIG. 7 is a block diagram showing a configuration of a formatter unit 8.

FIG. 8 is an explanatory diagram showing the front and back sides of a double-sided original.

FIG. 9 is an explanatory diagram showing an upside-down image.

FIG. 10 is an explanatory diagram showing an image that has been rotated by 180 degrees.

FIG. 11 is a flowchart showing a document reading processing routine.

FIG. 12 is a flowchart showing a document reading processing routine continued from FIG. 11;

[Explanation of Codes] 1 ... Reader unit 2 ... Printer unit 3 ... External device 4 ... Fax unit 10 ... Core unit 2001 ... Double-sided document

Claims (5)

[Claims] 1. An image reading apparatus which reads a double-sided original and treats it as a single-sided original, a reverse original feeding unit for feeding the double-sided original, a reading unit for reading the double-sided original, and a rotation for rotating the read image. Means, storage means for storing the rotated image, designating means for designating the orientation and binding direction of the image of the document, and according to the designated orientation and binding direction of the image,
An image reading apparatus comprising: a rotation amount determining unit that determines the rotation amount of the image. 2. The image reading apparatus according to claim 1, further comprising an image communication unit that transmits the read image via a telephone line. 3. The image reading apparatus according to claim 1, further comprising an external storage unit that stores the read image. 4. The image reading apparatus according to claim 1, further comprising a transfer unit that transfers the read image to an external device via an interface. 5. An image reading method for reading a double-sided original and treating it as a single-sided original, wherein the double-sided original is fed, the original is read, the read image is rotated, and the rotated image is stored. , Specifying the orientation and binding direction of the image of the document, and according to the designated orientation and binding direction of the image,
An image reading method for determining the rotation amount of the image.