JP2015070523A - Image reading apparatus and image reading system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To edit a read image even in an image reading apparatus whose storage capacity is small.SOLUTION: A multifunction machine, when reading out a document sheet and acquiring read image data (S10), generates compressed image data from the read image data and transmits the compressed image data to a PC 3 (S12). The multifunction machine generates read image data for display by compressing the read image data and displays a read image for display on a touch panel (S24). The multifunction machine, when an edition instruction is inputted following the display of the read image for display (S26: YES), accepts the edition instruction (S28), transmits a processing content table in which the edition instruction is stored to the PC 3 (S34), and instructs execution of image processing according to the processing content table (S36).

Description

  The present invention relates to a technique for editing a read image obtained by reading a document.

  When an original is scanned by an image reader and displayed on a display or the like of an external terminal, the scanned image is upside down, the scanned image order is incorrect, or unnecessary scanned images are included. In such a case, it may be necessary to read the document again. Therefore, conventionally, an image reading apparatus capable of editing a read image is known (for example, Patent Document 1). In this apparatus, the acquired read image is displayed on the display unit of the image reading apparatus, the read image is edited in the image reading apparatus according to the conditions set by the user, and the read image after processing is processed in the external terminal. Forward.

JP 2001-45239 A

  However, in the prior art, in order to edit the read image in the image reading apparatus, a storage capacity for storing the read image in the apparatus and a storage capacity for storing the read image after editing are required. The storage capacity was increasing. There is a demand for a technique that can edit a read image even in an image reading apparatus having a small storage capacity.

  It is an object of the present specification to disclose a technique capable of editing a read image even with an image reading apparatus having a small storage capacity.

  An image reading apparatus disclosed in this specification includes a reading unit that reads a document, a transmission unit, a display unit, an operation unit, a storage unit, and a control unit, and the control unit includes the reading unit. A reading process for reading a document and acquiring a read image, an image transmission process for transmitting the read image acquired by the reading process to an external terminal using the transmission unit, and a resolution corresponding to the display of the display unit And a display read image generation process for generating a display read image having a resolution lower than the resolution and storing the display read image in the storage unit, and a display process for displaying the display read image on the display unit. A receiving process for receiving an editing instruction for the read image for display displayed on the display unit using the operation unit, and the editing received in the receiving process for the read image transmitted in the image transmission process. An instruction to perform shows executes, an instruction transmitting process of transmitting to the external terminal.

  In this image reading apparatus, a read image acquired using a reading unit is transmitted to an external terminal using a transmission unit, and the storage unit has a resolution lower than a preset resolution and a necessary storage capacity. A read image for display with a small amount is stored. Then, when the display read image is displayed on the display unit and an editing instruction is accepted by the display, the external terminal is instructed to execute the editing instruction. Thereby, the read image can be edited using the external terminal. According to this image reading apparatus, it is not necessary to store the read image in the storage unit, and it is not necessary to store the read image after processing. Therefore, even with an image reading apparatus having a small storage capacity, the read image is edited. be able to.

  In the image reading apparatus, the instruction to execute the editing instruction includes information specifying a reading image transmitted to the external terminal corresponding to the reading image for display that has received the editing instruction in the receiving process, and the information And an instruction to execute the editing instruction on the read image specified by the above.

  According to this image reading apparatus, since the instruction for executing the editing instruction includes information for specifying the read image transmitted to the external terminal, the read image is specified for the external terminal and the editing instruction is executed. Can be instructed.

  In the image reading apparatus, the control unit further executes a redisplay process of editing the display read image in accordance with the editing instruction and redisplaying the edited read image on the display unit. It is also good.

  In this image reading apparatus, the display read image after editing is redisplayed on the display unit, so that the user confirms whether or not the content of the instructed editing is correct by the redisplayed display read image. Can do. In addition, since the display read image has a relatively low resolution and requires a small storage capacity, even if the display read image after editing is stored in the storage unit together with the display read image, an increase in the storage capacity is suppressed. can do.

  The image reading apparatus further includes a conveyance unit capable of continuously conveying the document along a conveyance path, and the reading unit continuously reads the document at a predetermined position on the conveyance path. Also good.

  In this image reading apparatus, a plurality of originals are continuously conveyed and a plurality of read images are acquired at a time. However, a read image for display with a relatively low resolution is stored in the storage unit, and the read image needs to be stored. Therefore, increase in storage capacity can be suppressed.

  In the image reading apparatus, the instruction to execute the editing instruction includes, for each document, information specifying the read image transmitted to the external terminal and the editing instruction for the read image specified by the information. It is good also as a structure which has the instruction | indication which performs.

  According to this image reading apparatus, in the instruction for executing the editing instruction, information for specifying the read image is generated for each original. Therefore, the read image of each original is specified and an editing instruction is issued to the external terminal. Can be instructed to do so.

  In the image reading apparatus, a correction unit that corrects a read image obtained by reading the document, a compression unit that generates a compressed read image by compressing the correction read image corrected by the correction unit, and the correction A reduction unit that reduces the read image and generates the display read image, and in the image transmission process, the control unit transmits the compressed read image generated by the compression unit to an external terminal, and In the display read image generation process, the display read image is generated using the reduction unit, and the correction unit, the compression unit, and the reduction unit are connected by a branch wiring and output from the correction unit. The corrected read image may be input to the compression unit and the reduction unit via the branch wiring.

  In this image reading apparatus, since the corrected read image output from the correction unit enters the dormitory through the branch wiring, the compression unit and the reduction unit can execute processing in parallel. .

  In the image reading apparatus, the editing instruction may include a rotation instruction of the read image. In the rotation processing of the read image, it is necessary to secure a storage capacity for storing the read image after the rotation processing prior to the rotation processing, and substantially the same storage capacity as the read image. Compared with editing processing, the storage capacity required for processing tends to increase. In this image reading apparatus, since editing processing including rotation processing is not performed in the apparatus, an increase in storage capacity can be suppressed.

  The present specification also discloses an image reading system realized by using the image reading apparatus. An image reading system disclosed in the present specification is an image reading system including the above-described image reading apparatus and an external terminal, and the external terminal transmits the read image and the editing instruction transmitted from the transmission unit. A receiving unit that receives an instruction to execute the image, an external terminal storage unit that stores the read image, and an external terminal control unit. The external terminal control unit includes a receiving unit that receives the image from the image reading apparatus. When a read image is received, a reception process for storing the read image in the external terminal storage unit, and when the reception unit receives an instruction to execute the edit instruction, the external terminal storage is performed according to the edit instruction. Editing processing for editing the read image stored in the copying unit.

  In this image reading system, the image reading apparatus transmits a read image and an instruction for executing an editing instruction to an external terminal. When the external terminal receives the instruction to execute the editing instruction, the external terminal edits the previously received read image according to the editing instruction. That is, the image reading apparatus causes the external terminal to edit the read image and does not edit the read image itself. Therefore, there is no need to store the read image or the processed read image, and an image reading system that edits the read image using an image reading apparatus with a small storage capacity is configured. be able to.

  According to the invention disclosed in this specification, a read image can be edited even by an image reading apparatus having a small storage capacity.

Block diagram schematically showing system configuration Perspective view showing the external configuration of the multifunction machine Schematic cross-sectional view of a multifunction machine Block diagram schematically showing the electrical configuration of the system The block diagram which shows roughly the procedure of the image processing in an image processing circuit Flow chart showing image reading process Flow chart showing acceptance process Schematic showing changes in the read image for display on the touch panel Schematic diagram showing changes in processing content table Flow chart showing editing process

<One Embodiment>
An embodiment will be described with reference to FIGS. 1 to 10.
1. System Configuration FIG. 1 is a block diagram illustrating a configuration example of a system 1 according to the present embodiment. The system 1 includes a multi-function device 2 that can execute a plurality of modes such as a copy mode and a print mode in addition to a scan mode, and a personal computer (hereinafter, PC) 3 that is an external terminal. The multifunction machine 2 and the PC 3 are connected to each other via the network line 4 and perform data communication and input / output of instruction requests between the apparatuses. The multifunction device 2 is an example of an image reading device, and the system 1 is an example of an image reading system.

2. As shown in FIG. 2, the multifunction machine 2 includes a cover unit 5 and an apparatus body 6. In the following description, the lower right side of FIG. 2 is the front side (F) of the multifunction device 2, the lower left side of the paper is the left side (L) of the multifunction device 2, and the upper side of the paper is the upper side (U) of the multifunction device 2. . A support member (not shown) is provided on the rear end side of the upper surface of the apparatus body 6, and the rear end side of the cover portion 5 is connected to the support member so as to be rotatable around a rotation axis along the left-right direction. ing. Thereby, the cover part 5 above the dotted line W can be displaced between a closed posture (see FIG. 3) covering the upper surface of the device body 6 and an open posture (see FIG. 2) where the upper surface of the device body 6 is opened. is there.

  As shown in FIG. 2, the cover 5 includes a supply tray 11, a front sensor (hereinafter referred to as “F sensor”) 12, a discharge tray 13, an automatic document feeder (hereinafter referred to as “ADF”) 14, an opposing member 15, and a flat bed. (Flat Bed, hereinafter referred to as FB) pressing member 16, a rear sensor (hereinafter referred to as R sensor) 18, and the like. In the cover portion 5, a conveyance path R for folding a document sheet (not shown) from the supply tray 11 into a U shape and conveying it to the discharge tray 13 is formed. The ADF 14 is an example of a transport unit.

  A plurality of original sheets before image reading can be arranged on the supply tray 11. The F sensor 12 detects the presence or absence of a document sheet on the supply tray 11 at a detection position RF on the leading end side (left end side) of the supply tray 11. The R sensor 18 detects the presence or absence of a document sheet at a detection position RR downstream of the detection position RF in the transport path R.

  The ADF 14 separates a plurality of document sheets placed on the supply tray 11 one by one, continuously conveys them along the conveyance path R, and sequentially discharges them to the discharge tray 13. Specifically, the ADF 14 includes a supply roller 14A, a separation roller 14B, a separation pad 14C, a plurality of conveyance rollers 14D, a plurality of driven rollers 14E driven in pressure contact with the respective conveyance rollers 14D, and a plurality of guides for guiding the document sheet. It has member 14F etc.

  The supply roller 14A, the separation roller 14B, and the conveyance roller 14D are rotationally driven by a drive motor U1 (see FIG. 4). As a result, the supply roller 14A conveys the plurality of document sheets stacked on the supply tray 11 to the conveyance path R side, and the separation roller 14B and the separation pad 14C feed the plurality of document sheets one by one. Separated and sent out in the transport path R. The conveyance roller 14 </ b> D conveys the separated document sheet along the conveyance path R and discharges it onto the discharge tray 13.

  The facing member 15 is disposed on the downstream side of the detection position RF in the transport path R, and faces the reading unit 25 described later via the ADF glass 21A described later when the cover unit 5 is in the closed posture. The FB pressing member 16 is provided on the lower surface side of the cover portion 5 and covers substantially the entire surface of the FB glass 21B described later when the cover portion 5 is in the closed posture.

  As shown in FIG. 2, the apparatus main body 6 is formed in a box shape that is long in the left-right direction as a whole, and a platen glass 21 is disposed on the upper surface portion thereof. A partition member 22 is provided on the upper surface of the platen glass 21 at a position on the left side. The platen glass 21 is divided into two parts by the partition member 22. Hereinafter, the left part is referred to as ADF glass 21A, and the right part is referred to as FB glass 21B.

  Inside the apparatus main body 6, a reading unit 25, a device moving unit 26 (see FIG. 4), and the like are provided. When the cover unit 5 is in the closed posture, the reading unit 25 is positioned at the reading position RL and faces the facing member 15. The reading unit 25 is a reading device having a CIS (Contact Image Sensor), and includes a light emitting unit 25A and a light receiving unit 25B. The reading position RL is an example of a predetermined position on the transport path.

  The light emitting unit 25A is configured by arranging a plurality of light emitting elements (such as light emitting diodes) in the main scanning direction Z1 corresponding to the front-rear direction of the apparatus main body 6. The light receiving unit 25B has a plurality of pixels in the main scanning direction Z1. The light receiving unit 25B receives the light emitted from the light emitting unit 25A and reflected by the document sheet using each pixel, and reads the document sheet by one line in the main scanning direction Z1.

  The device moving unit 26 moves the reading unit 25 below the platen glass 21 in the sub-scanning direction Z2 corresponding to the left-right direction of the apparatus main body 6, in other words, perpendicular to the main scanning direction Z1. The device moving unit 26 rotationally drives a moving roller (not shown) by the moving motor U2 (see FIG. 4), and moves the reading unit 25 in the sub-scanning direction Z2.

  The reading unit 25 performs so-called ADF reading, in which the original sheet conveyed in the conveying direction Z3 by the ADF 14 is repeatedly read one line at the reading position RL to read the original sheet. Further, the reading unit 25 repeatedly reads one line while moving the lower side of the FB glass 21B in the sub-scanning direction Z2 by the device moving unit 26, and reads the original sheet placed on the upper side of the FB glass 21B. A so-called FB reading is performed.

  In addition to this, the apparatus main body 6 includes a touch panel 24. The touch panel 24 includes a liquid crystal display unit (LCD) of about 3.7 inches, for example, and displays a reduced image of a document sheet having a size such as A4 read by the reading unit 25, for example. In this case, the touch panel 24 functions as the display unit 28 (see FIG. 4). Various buttons are displayed on the touch panel 24, and various instructions from the user are accepted. The touch panel 24 accepts an editing instruction for each reduced image while the reduced image of the document sheet is displayed. In this case, the touch panel 24 functions as the operation unit 27 (see FIG. 4). The touch panel 24 is an example of a display unit and an operation unit.

3. System electrical configuration (configuration of multifunction devices)
As shown in FIG. 4, the multifunction device 2 includes an ASIC (Application Specific Integrated Circuit) 39, a ROM 36, and a RAM 37, to which a reading unit 25, a transmission / reception unit 29, and the like are connected. As shown by a solid line 31 in FIG. 4, an example including a ASIC 39, a ROM 36, and a RAM 37 is an example of a control unit. The RAM 37 is an example of a storage unit, and the transmission / reception unit 29 is an example of a transmission unit.

  The ASIC 39 includes a CPU 30 and a dedicated hardware circuit such as the image processing circuit 32. Various programs for controlling the operation of the MFP 2 are stored in the ROM 36, and the CPU 30 controls each part according to the program read from the ROM 36, and will be described later using a hardware circuit as necessary. Processing such as image reading processing is executed.

  Based on a command from the CPU 30, the reading unit 25 causes the light emitting unit 25A to emit light and reads a document sheet. In the reading unit 25, the light receiving unit 25B reads one line in the main scanning direction Z1 in one reading, and acquires read image data that is a collection of pixel data acquired by a plurality of pixels arranged in the main scanning direction Z1. . When reading the document sheet, the reading unit 25 repeats reading a plurality of times, and acquires a plurality of read image data continuous in the sub-scanning direction Z2. Each read image data acquired by the reading unit 25 is converted into read image data of a digital signal and temporarily stored in the RAM 37.

  The image processing circuit 32 includes a correction circuit 33, a reduction circuit 34, a compression circuit 35, and the like, and executes various types of image processing on the read image data stored in the RAM 37 according to instructions from the CPU 30. As shown in FIG. 5, the read image data is composed of RGB color data, and when the correction circuit 33 reads the read image data stored in the RAM 37, correction processing such as shading correction processing is performed. The corrected read image data is transmitted to the reduction circuit 34 and the compression circuit 35 via the branch wiring BH. When the correction circuit 33 reads the read image data from the RAM 37, the read image data temporarily stored in the RAM 37 is deleted. The correction circuit 33 is an example of a correction unit, the reduction circuit 34 is an example of a reduction unit, and the compression circuit 35 is an example of a compression unit.

  The reduction circuit 34 performs a reduction process for reducing the read image data transmitted from the correction circuit 33 and generating read image data for display. As will be described later, since the display read image displayed on the touch panel 24 is generated from the display read image data, the display read image data has a resolution corresponding to the display on the touch panel 24, specifically, the touch panel. The resolution is required to be lower than the reference resolution set from the size of 24. For example, the reduction circuit 34 reduces read image data of about 9 million pixels generated by reading an A4 size original sheet with a resolution of 300 dpi by linear interpolation, and generates read image data for display of about 20,000 pixels. . In FIG. 5, the read image data for display is indicated by three color data R′G′B ′, and is stored in the RAM 37 after generation.

  The compression circuit 35 compresses the read image data transmitted from the correction circuit 33 and executes a compression process for generating compressed image data. For example, the compression circuit 35 generates JPEG compressed image data by JPEG compressing read image data composed of three color data of RGB. The generated compressed image data is temporarily stored in the RAM 37.

  The transmission / reception unit 29 is connected to the network line 4 and performs data communication and instruction request input / output with the PC 3. For example, the transmission / reception unit 29 transmits the compressed image data stored in the RAM 37 to the PC 3 according to a command from the CPU 30. When the transmission / reception unit 29 transmits the compressed image data to the PC 3, the compressed image data temporarily stored in the RAM 37 is deleted. In addition, the transmission / reception unit 29 transmits, to the PC 3, a compressed image data editing execution instruction, which will be described later, according to a command from the CPU 30.

(PC configuration)
Next, the configuration of the PC 3 will be described. As illustrated in FIG. 4, the PC 3 includes a CPU 40, a ROM 46, and a RAM 47, to which a transmission / reception unit 42, an operation unit 43, and a display unit 44 are connected. As shown by a solid line 41 in FIG. 4, the one including the CPU 40, the ROM 46, and the RAM 47 is an example of the external terminal control unit. The RAM 47 is an example of an external terminal storage unit, and the transmission / reception unit 42 is an example of a reception unit.

  Various programs for controlling the operation of the PC 3 are stored in the ROM 46, and the CPU 40 executes control of each unit in accordance with the program read from the ROM 46, and executes processing such as editing processing described later. The operation unit 43 is, for example, a keyboard or a mouse, and the display unit 44 is, for example, a liquid crystal display.

  The transmission / reception unit 42 is connected to the network line 4 and performs data communication and input / output of an instruction request with the multifunction device 2. For example, the transmission / reception unit 42 receives the compressed image data transmitted from the multifunction device 2 and an editing execution instruction for the compressed image data. The compressed image data received by the transmission / reception unit 42 is stored in the RAM 47, and the compressed image data received by the transmission / reception unit 42 is transmitted to the CPU 40.

4). Image Reading Process Next, the image reading process in the multifunction machine 2 will be described with reference to FIGS. When a reading instruction is input from the user to the touch panel 24, the multifunction device 2 executes an image reading process. In the present embodiment, a case where ADF reading is continuously executed on a plurality of document sheets placed on the supply tray 11 will be described.

  As shown in FIG. 6, when the image reading process is started, the CPU 30 accepts the reading setting of the original sheet set in accordance with the reading instruction (S2). The reading settings include monochrome / color settings in addition to document size settings and resolution settings.

  Next, the CPU 30 waits for a document sheet to be placed on the supply tray 11 based on the detection result of the F sensor 12 (S4: NO). When the document sheet is placed on the supply tray 11 (S4: YES), the CPU 30 instructs the ADF 14 to convey (S6) and starts conveying the document sheet along the conveyance path R.

  When starting the conveyance of the document sheet, the CPU 30 waits for the leading end (hereinafter referred to as the leading end) in the conveyance direction Z3 of the document sheet to reach the detection position RR based on the detection result of the R sensor 18 (S8: NO). When the leading edge of the document sheet reaches the detection position RR, the CPU 30 waits for a specified conveyance time for the document sheet to be conveyed from the detection position RR to the reading position RL, and then reads the document to the reading unit 25. (S10), the original sheet is read one line.

  When the read image data is temporarily stored in the RAM 37 by reading one line of the original sheet, the CPU 30 instructs the image processing circuit 32 to perform image processing. Thereby, as described above, the correction processing by the correction circuit 33, the reduction processing by the reduction circuit 34, and the compression processing by the compression circuit 35 are executed. The CPU 30 further instructs the transmission / reception unit 29 to transmit the compressed image data generated by the compression circuit 35 to the PC 3 (S12). Further, the read image data for display generated by the reduction circuit 34 is stored in the RAM 37 (S14).

  Based on the detection result of the R sensor 18, the CPU 30 determines whether or not the reading of the document sheet is completed (S16). When the original sheet has not passed the detection position RR, or when the specified conveyance time has not elapsed since the original sheet passed the detection position RR (S16: NO), the CPU 30 conveys the original sheet. Since the trailing edge (hereinafter, trailing edge) in Z3 does not pass through the reading position RL and the reading of the original sheet is not completed, the processing from S12 is continued.

  On the other hand, when the specified conveyance time has elapsed after the original sheet has passed the detection position RR (S16: YES), the CPU 30 determines that the rear end of the original sheet has passed the reading position RL and An instruction to stop reading is given (S18), and reading of the original sheet is stopped.

  The CPU 30 determines whether or not a document sheet remains on the supply tray 11 based on the detection result of the F sensor 12 (S20). When the original sheet remains on the supply tray 11 (S20: NO), the CPU 30 continues the processing from S10. On the other hand, when no document sheet remains on the supply tray 11 (S20: YES), the CPU 30 instructs the ADF 14 to stop conveyance (S22), and stops conveyance of the document sheet.

  When the conveyance of the document sheet is stopped, the CPU 30 displays the display read image on the touch panel 24 using the display read image data (S24). As shown in FIG. 8, a plurality (three in FIG. 8) of read images for display are displayed on the touch panel 24 in accordance with the order (A, B, C,...) Read by the reading unit 25. Further, the screen can be scrolled by the user's operation, and the user can confirm all of the read images for display on the plurality of document sheets read by the reading unit 25 by scrolling the screen.

  Further, the user can input an editing instruction to the display read image displayed on the touch panel 24, and the user selects one of the display read images displayed on the touch panel 24. It is possible to input editing instructions such as rotation, order change, and deletion. For example, as shown in the upper diagram of FIG. 6, when the display read image B is different from the direction intended by the user and the display read image B is rotated 90 ° counterclockwise, the user reads the display read image B. Is selected, and a “rotation” button 51 displayed on the touch panel 24 is pressed to input a rotation instruction. As a result, as shown in the lower diagram of FIG. 8, the display read image B rotated 90 degrees counterclockwise is displayed again on the touch panel 24.

  In addition to this, on the touch panel 24, a “previous” button 52 for changing the selected read image for display to the previous order, and a selected read image for display are changed to the next order “ All the original sheets read by the image reading process, including the “next” button 53, the “delete” button 54 for deleting the selected display read image, and the display read image that can be scrolled to display. An “OK” button 55 indicating that editing input has been completed is displayed for the display read image.

  As described above, when there is an input of an editing instruction from the user (S26: YES), the CPU 30 executes a reception process (S28). In the reception process, the CPU 30 detects the editing instruction from the user in order to update the processing content table ST using the editing instruction from the user.

  Here, the processing content table ST is created for each image reading process. Specifically, when the CPU 30 instructs the reading unit 25 to read in S10, the processing content table ST is associated with the document sheet instructed to read. More precisely, the processing content is stored in the RAM 37 in association with the read image data for display and read image data generated from the original sheet instructed to read (hereinafter, the display read image data will be used as a representative). A table ST (see FIG. 9) is created. The processing content table ST is an example of information for specifying a read image.

  As shown in FIG. 9, in the processing content table ST, ID is given to each display read image data, and angle information KJ, order information ZJ, and residual information SJ of each display read image data are stored. . Here, the angle information KJ is information indicating the counterclockwise rotation angle with respect to the read image data for display stored in S14, and the initial value is 0 °. The order information ZJ is information indicating the order read by the reading unit 25 in the image reading process. The remaining information SJ is information indicating whether or not the corresponding display read image data remains without being deleted, and the initial value is “◯” indicating that it remains.

  As shown in FIG. 7, in the reception process, the CPU 30 first detects which display read image has been selected (S52), and which type of editing instruction is given to the selected target display read image. Is detected (S54, 56). For example, when the “rotate” button 51 is pressed (S54: YES), the CPU 30 detects that a rotation instruction has been input (S58). Further, when the “one after” button 53 or the “one after” button 53 is pressed (S54: NO, S56: YES), the CPU 30 detects that an order change instruction has been input (S60). Further, when the “delete” button 54 is pressed (S54: NO, S56: NO), the CPU 30 detects that a delete instruction has been input (S62).

  As illustrated in FIG. 6, when the acceptance process ends, the CPU 30 updates the process content table ST using the editing instruction detected in the acceptance process (S30). For example, when the rotation instruction is detected, the CPU 30 increases the angle information KJ of the display read image data corresponding to the target display read image by 90 °. Further, when the order change instruction is detected, the CPU 30 increases the order information ZJ of the display read image data corresponding to the target display read image by 1 (decrease by 1), and in response thereto, other display readings The image data order information ZJ is changed. In addition, when a deletion instruction is detected, the remaining information SJ of the display read image data corresponding to the target display read image is changed to “x” indicating that it does not remain, The order information ZJ of the read image data for display is changed. As a result, the processing content table ST shown in the upper diagram of FIG. 9 is changed to the processing content table ST shown in the lower diagram of FIG.

  Next, the CPU 30 redisplays the display read image on the touch panel 24 using the updated processing content table ST and the display read image data (S32). In the processing content table ST, when there is display read image data whose angle information KJ is not 0 °, the CPU 30 supports the correction circuit 33 of the image processing circuit 32 to rotate the display read image data. . For example, when the angle information KJ of certain display read image data is 90 °, the CPU 30 causes the correction circuit 33 to rotate the display read image data counterclockwise by 90 °.

  The rotation of the read image data for display includes the following processing. First, the correction circuit 33 secures a storage area in the RAM 37 that is about the same as the read image data for display and in which the read image data for display after writing is written. Next, the correction circuit 33 selects one pixel data included in the display read image data, and calculates an address to be written in the storage area in which the pixel data is secured. Then, the correction circuit 33 writes the pixel data at an address obtained by calculation. The correction circuit 33 repeats the above process for all the pixel data included in the display read image data, and generates display read image data after rotation.

  Then, the CPU 30 redisplays the display read image on the touch panel 24 in accordance with the updated order information ZJ of the processing content table ST. In the change process of the processing content table ST described above, the order information ZJ is deleted (see “−” in FIG. 9) for the display read image data whose residual information SJ is “×”, and the touch panel 24 The read image for display is not displayed.

  The CPU 30 receives one editing instruction for one read image data for display in one receiving process, and executes the processes of S30 and S32. When a plurality of editing instructions are input from the user, the CPU 30 repeats the processing from S28 to S32. Then, the CPU 30 displays the read image for display on the touch panel 24 (S24, S32), or when the user does not input an editing instruction for the first specified time, or the user clicks the “OK” button 55. When pressed (S26: NO), the transmitter / receiver 29 is instructed to transmit the processing content table ST to the PC 3 (S34). Subsequently, an editing execution instruction is transmitted to the PC 3, and based on the previously transmitted processing content table ST, an instruction is given to execute image processing on the compressed image data, and the image reading process is terminated.

5. Editing Processing Next, editing processing in the PC 3 will be described with reference to FIG.
When the CPU 40 detects that compressed image data has been received from the multifunction device 2 via the transmission / reception unit 42, the CPU 40 starts editing processing. As shown in FIG. 10, when starting the editing process, the CPU 40 receives the compressed image data (S72).

  The CPU 40 waits for the end of the reception of the compressed image data (S74: NO), and determines that the reception of the compressed image data has ended when the period during which the compressed image data is not transmitted continues for a second specified time or longer ( (S74: YES), the received compressed image data is stored in the RAM 47 (S76). Then, the CPU 40 decompresses the compressed image data and stores it in the RAM 47 as read image data (S77).

  Next, the CPU 40 waits for reception of the processing content table ST and the editing execution instruction from the multifunction device 2 (S78: NO), and receives the processing content table ST and the editing execution instruction from the multifunction device 2 ( (S78: YES), the read image data received earlier is edited according to the processing content table ST (S80). Specifically, the CPU 40 deletes the read image data whose residual information SJ is “x” in the processing content table ST. Next, the CPU 40 rearranges the read image data according to the order information ZJ in the processing content table ST. Then, when there is compressed image data whose angle information KJ is not 0 ° in the processing content table ST, the CPU 40 rotates the read image data according to the angle information KJ.

  Note that the process of rotating the read image data in the CPU 40 is the same as the process of rotating the read image data for display in the correction circuit 33, and therefore a duplicate description is omitted. On the other hand, the read image data includes more pixels than the display read image data. Therefore, the storage area secured in the RAM 47 of the PC 3 for the process of rotating the read image data is larger than the storage area secured in the RAM 37 of the multifunction machine 2 for the process of rotating the read image data for display. large. Further, the number of processes performed by the CPU 40 for rotating the read image data is larger than the number of processes performed by the correction circuit 33 for rotating the read image data for display.

  The CPU 40 stores the edited read image data (S82). The CPU 40 edits the read image data for each read image data, and repeats the processing from S80 until the editing is completed for all the read image data (S84: NO). When the editing is completed for all the read image data (S84: YES), the CPU 40 performs a compression process on all the read image data and ends the editing process (S85). Note that the compression process in the CPU 40 is the same as the compression process in the compression circuit 35, and thus a duplicate description is omitted.

6). Advantages of the present embodiment (1) In the system of the present embodiment, the MFP 2 generates compressed image data and display read image data from the read image data acquired using the reading unit 25, and deletes the read image data. To do. The generated read image data for display is stored in the RAM 37, while the compressed image data is transmitted to the PC 3 and is not stored in the RAM 37. That is, among the read image data, the compressed image data, and the display read image data, the image data stored in the RAM 37 is only the display read image data generated by reducing the read image data. The memory area that must be secured in the RAM 37 to store the data can be reduced.

  In particular, when a plurality of document sheets are continuously read by ADF reading as in the present embodiment, a plurality of read image data corresponding to the plurality of document sheets are acquired and stored in the RAM 37. The storage area that must be secured in the RAM 37 increases. In the MFP 2 according to the present embodiment, only the read image data for display is stored in the RAM 37, so that even when a plurality of read image data is acquired, the storage area that must be secured in the RAM 37 can be reduced.

  Then, in the multifunction device 2, when the display read image is displayed on the touch panel 24 using the display read image data and an edit instruction is received from the user, the processing content table ST and the edit instruction stored therein are stored. An editing execution instruction is transmitted to the PC 3, and the compressed image data is decompressed according to the editing instruction, and the read image data is edited. For this reason, it is not necessary to edit the read image data having a large data size in the multi function device 2, and in particular, it is not necessary to execute a process for rotating the read image data.

  As described above, when executing the process of rotating the read image data in the multifunction machine 2, it is necessary to secure a relatively large storage area in the RAM 37, and the correction circuit 33 performs a relatively large number of processes. Therefore, it is necessary to prepare a processing circuit having a high processing capability. In the multifunction device 2 of the present embodiment, it is not necessary to execute the process of rotating the compressed image data in the multifunction device 2, so that the storage area that must be secured in the RAM 37 can be reduced and advanced processing is performed. The multifunction device 2 can be configured by using the correction circuit 33 having no capability.

  On the other hand, the PC 3 edits the read image data. Generally, however, the RAM 47 of the PC 3 has a larger capacity than the RAM 37 of the multifunction machine 2, and the capacity of the RAM 47 is used for the process of rotating the read image data. There is no need to expand. Further, the CPU 40 of the PC 3 has a higher processing capacity than the correction circuit 33 of the multifunction machine 2, and it is not necessary to improve the processing capacity of the CPU 40 for the process of rotating the read image data. The PC 3 edits the read image data according to the processing content table ST.

  That is, according to the system of the present embodiment, by using the MFP 2 in which the storage area that must be secured in the RAM 37 is reduced and the processing capability required for the correction circuit 33 is suppressed from being advanced, An editing instruction from the user can be received, and the compressed image data generated from the read image data can be edited in accordance with the editing instruction.

(2) In the system of the present embodiment, when the edit execution instruction is transmitted to the PC 3, the processing content table ST is transmitted. In the processing content table ST, an ID is assigned to the display read image data and the read image data, and angle information KJ, order information ZJ, and remaining information SJ are stored in association with the ID. Therefore, when the edit execution instruction is transmitted to the PC 3, by transmitting the processing content table ST, it is possible to specify the read image data, that is, the original sheet, and instruct the edit execution.

(3) In the system of the present embodiment, when receiving an editing instruction from the user, the multifunction device 2 edits the display read image according to the editing instruction and redisplays it on the touch panel 24. Therefore, the user can confirm whether the content of the instructed editing is correct or not by the display read image redisplayed on the touch panel 24.

  Further, as described above, the storage area secured in the RAM 37 of the multifunction device 2 for the process of rotating the read image data for display is secured in the RAM 47 of the PC 3 for the process of rotating the compressed image data. Therefore, even if the display read image is edited in the multifunction device 2, it is possible to suppress an increase in the storage area that must be secured in the RAM 37. Further, since the number of processes performed by the correction circuit 33 to rotate the read image data for display is smaller than the number of processes performed by the CPU 40 to rotate the compressed image data, the processing capability required of the correction circuit 33 is increased. Sophistication can be suppressed.

(4) In the system of the present embodiment, in the image processing circuit 32 of the multifunction device 2, as shown in FIG. 5, the correction circuit 33, the compression circuit 35, and the reduction circuit 34 are connected by the branch wiring BH. The read image data corrected by the circuit 33 is transmitted to the reduction circuit 34 and the compression circuit 35 via the branch wiring BH. Therefore, the read circuit data corrected by the correction circuit 33 is received almost simultaneously by the reduction circuit 34 and the compression circuit 35, and the reduction circuit 34 and the compression circuit 35 can execute processing in parallel.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and the drawings, and for example, the following various aspects are also included in the technical scope of the present invention.
(1) In the above embodiment, the description has been given using the multi-function device 2 having a plurality of functions such as a scan function, a copy function, and a print function. However, the present invention is not limited to this, and only a scanner function is provided. It may be an image reading device.

(2) In the above-described embodiment, the MFP 2 includes the ASIC 39 having the CPU 30, and the CPU 30 configures a control unit that executes various processes such as an image reading process using a hardware circuit in the ASIC 39 as necessary. Although the description has been given using an example, the present invention is not limited to this. For example, if the CPU exists separately from the ASIC and the processing executed by the control unit may be executed by the CPU, the CPU does not exist in the ASIC, and the control unit is installed by a hardware circuit provided in the ASIC. Processing to be executed may be executed. Furthermore, the process which a control part performs may be performed by one or several CPU and ASIC.

(3) In addition, the program executed by the CPU 30 is not necessarily stored in the ROM 36, and may be stored in the CPU 30 itself or in another storage device.

(4) In the above-described embodiment, the description has been given using the multi-function device 2 that can perform both ADF reading and FB reading. However, only one of the functions can be executed. Further, in the above-described embodiment, the description has been given using an example in which ADF reading is performed, but the present invention can also be applied to a case in which FB reading is performed. When a plurality of document sheets are continuously read by the FB reading, for example, the user inputs that the plurality of document sheets are continuously read via the touch panel 24, so that the cover unit 5 is read each time. One processing content table ST and a read image data group can be generated from a plurality of document sheets read by opening and closing the.

(5) In the above embodiment, the description has been made using an example in which the read image data for display and the compressed image data are generated from one reading of the original sheet. However, the present invention is not limited to this. For example, in the FB reading, when a pre-scan for confirming the size of the original sheet is performed before the main scan for reading the original sheet, display read image data is generated from the pre-scan and the main scan is performed. Compressed image data may be generated from In this case, the correction circuit 33, the compression circuit 35, and the reduction circuit 34 are not necessarily connected by the branch wiring BH.

(6) In the above embodiment, the rotation instruction, the order change, and the deletion are exemplified as the editing instruction input via the touch panel 24 of the multifunction machine 2, but the present invention is not limited to this. For example, an instruction such as 90% reduction or 110% enlargement may be included.

1: System, 2: Multifunction machine, 3: PC (external terminal), 24: Touch panel, 25: Reading unit, 29: Transmission / reception unit, 32: Image processing circuit, 33: Correction circuit, 34: Reduction circuit, 35: Compression Circuit: 42: Transmission / reception unit, BH: Branch wiring, ST: Processing content table, KJ: Angle information, SJ: Remaining information, ZJ: Order information

Claims (8)

A reading section for reading a document;
A transmission unit;
A display unit;
An operation unit;
A storage unit;
A control unit;
With
The controller is
A reading process for causing the reading unit to read a document and obtaining a read image;
An image transmission process for transmitting a read image acquired by the reading process to an external terminal using the transmission unit;
A display read image generation process that generates a display read image having a resolution corresponding to the display of the display unit and lower than the resolution, and stores the display read image in the storage unit;
Display processing for displaying the read image for display on the display unit;
A reception process for receiving an editing instruction for the display read image displayed on the display unit using the operation unit;
An instruction transmission process for transmitting, to the external terminal, an instruction to execute the editing instruction received in the reception process for the read image transmitted in the image transmission process;
An image reading apparatus that executes The image reading apparatus according to claim 1,
The instruction to execute the editing instruction is:
Information for identifying the read image transmitted to the external terminal corresponding to the read image for display that has received an editing instruction in the reception process;
An instruction to execute the editing instruction on the read image specified by the information;
An image reading apparatus. The image reading apparatus according to claim 1, wherein:
The controller is
Furthermore,
Re-display processing for editing the display read image according to the editing instruction, and re-displaying the display read image after editing on the display unit;
An image reading apparatus that executes An image reading apparatus according to any one of claims 1 to 3,
Furthermore,
A transport unit capable of continuously transporting the document along a transport path;
With
The image reading apparatus, wherein the reading unit continuously reads the document at a predetermined position on the conveyance path. The image reading apparatus according to claim 4,
The instruction to execute the editing instruction is:
For each document,
Information specifying the read image transmitted to the external terminal;
An instruction to execute the editing instruction on the read image specified by the information;
An image reading apparatus. The image reading apparatus according to claim 5,
Furthermore,
A correction unit that corrects a read image obtained by reading the original;
A compression unit that generates a compressed read image by compressing the corrected read image corrected by the correction unit;
A reduction unit that reduces the corrected read image to generate the display read image;
With
The controller is
In the image transmission process, the compressed read image generated by the compression unit is transmitted to an external terminal,
In the display read image generation process, the display read image is generated using the reduction unit,
The correction unit, the compression unit, and the reduction unit are connected by a branch line, and the corrected read image output from the correction unit is input to the compression unit and the reduction unit via the branch line. An image reading apparatus. The image reading apparatus according to any one of claims 1 to 6,
An image reading apparatus, wherein the editing instruction includes a rotation instruction of a read image. An image reading system comprising the image reading device according to any one of claims 1 to 7 and an external terminal,
The external terminal is
A receiving unit that receives the read image transmitted from the transmitting unit and an instruction to execute the editing instruction;
An external terminal storage unit for storing the read image;
An external terminal control unit;
With
The external terminal control unit
A receiving process for storing the read image in the external terminal storage unit when the receiving unit receives the read image from the image reading device;
An editing process for editing the read image stored in the external terminal storage unit according to the editing instruction when the receiving unit receives an instruction to execute the editing instruction;
Executing an image reading system.

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