JPH04294671A - Picture processing unit - Google Patents

Abstract

PURPOSE:To simplify the input operation of an edit processing job of a succeeding read data by moving a processing unit onto a storage medium and implementing initial edit such as deletion of an undesired part of the read data simultaneously. CONSTITUTION:A DIR bit of a register A70 of a read controller 9 is read and checked by a CPU 1 of a main controller to detect the moving direction of a picture reader 10. When the DIR bit is '0', that is, the reader 10 is moved in the forward direction, usual picture reading is processed, and when the DIR bit is '1', that is, the reader 10 is moved in the reverse direction, the reference position is processed. In this case, the device is moved to the forward direction to increase the reference position data corresponding to the moving distance in the reverse direction. Then the reference position is used for a new reference point for a data start point to be stored in a picture processing work memory 4 and a display memory 6. Thus, a picture data corresponding to a block between the new reference data and the position data is deleted to implement initial edit such as deletion of the undesired part of the read data or the like.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention relates to an image data reading device, and particularly to an image data reading device that photoelectrically converts image information recorded on a medium such as paper by manually moving the medium and outputs the output. The present invention relates to an image processing device whose purpose is to import data into an information processing device or the like.

0002

[Background Art] In information processing such as document editing using information processing devices such as personal computers and word processors, a simple image reading device has been proposed to import images recorded on a recording medium such as paper into an edited document. has been done.

[0003] This image reading device usually includes illumination means, photoelectric conversion means, movement detection means, and control means. Then, the image reading device is manually moved over the recording medium while the recording medium is illuminated by the illumination means. The configuration is such that the reflected light is photoelectrically converted into read data for each unit movement amount of the image reading device.

[0004] The data read in this way includes:
It often includes data in unnecessary areas (for example, only background data with no image data, or unnecessary iconography), and generally this unnecessary part is deleted by an information processing device using a subsequent keyboard input operation. Processing is in progress.

For example, in Japanese Patent Application Laid-Open No. 62-125770, position information obtained according to the direction and amount of movement of an image reading device when reading an image is used as an address of read data in a memory section, and then this information is An image reading device that extracts only necessary read data by inputting an address has been disclosed.

[0006]

[Problem to be Solved by the Invention] However, in these conventional image reading devices, after reading the image data, input operations for editing such as extracting the read data must be performed from the keyboard. . In other words, the operation required two steps, which was cumbersome. Furthermore, since reading operations and editing operations are completely separated, there is a problem in that it causes interruptions in thinking. Furthermore, in particular, no consideration has been given to changing the starting point of reading an image once the reading operation has started.

An object of the present invention is to provide an image reading device that can edit read data by a series of simple operations when reading an image. In other words, it is an object of the present invention to provide an image reading device that allows easy editing of read data.

Here, editing read data means erasing data in an unnecessary area from the read image data, or in other words, extracting data in a necessary area.

[0009]

[Means for Solving the Problems] The present invention has been made to achieve the above object, and it moves on a recording medium, detects an image visibly recorded on the recording medium, and sequentially,
an image reading means for outputting the image data as image data; a storage means for storing the image data output by the image reading means; and a movement direction detection means for detecting the direction of movement and outputting it as movement direction data. , unit movement detection means for detecting and outputting the movement for each unit distance, reference position information indicating a predetermined position and/or area of the image data stored in the storage means, and the direction data There is provided an image processing apparatus characterized in that, when the -ta indicates one predetermined direction, the reference position information is sequentially updated in response to the output from the unit movement detection means.

[0010] The control means has a function of performing processing for reading and outputting image data stored in the storage means from the position and/or area indicated by the reference position information. It is preferable.

[0011] In this case, the control means may perform the above processing every time the reference position information is updated.

Further, in this case, there is provided an image display processing apparatus characterized by comprising the image processing apparatus and display means for displaying the image data outputted from the control means.

[0013] Preferably, the display means has a function of making the display mode of the area indicated by the reference position information different from that of other areas.

[0014] Furthermore, the control means may have a function of erasing image data at a position and/or area indicated by the reference position information from among the image data stored in the storage means. good.

[0015]

[Operation] The image reading means is moved over a recording medium, for example, paper, and detects an image. Then, the detected image data is stored in the storage means. At this time, the control means causes the image reading means to move on the recording medium in a predetermined direction, for example, in the opposite direction to the direction in which the image is read, based on the detection results of the movement direction detection means and the unit movement detection means. When it is detected that the unit movement detecting means is moving, the reference position information is updated in accordance with the output from the unit movement detecting means. This allows predetermined processing to be performed on the image data stored in the storage means.
For example, when reading, deleting, etc., the position and/or area of the image data to be processed is changed in accordance with the moving direction of the image reading means.

[0016] That is, since it is possible to delete image data while checking it on the display means, extraction of the necessary part of the image data can be realized by a single operation of the image reading device by the operator, and the reading Processing and initial data editing processing can be performed simultaneously and easily.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is an overall block diagram of the image reading device according to the present invention connected to an information processing device such as a word processor.

The image reading processing apparatus of this embodiment has a configuration in which a main controller and an image reading apparatus 10 are connected via an image reading control circuit 9. The image reading device 10 includes an image reading section 11, a reading range changeover switch 54, and an image signal on/off switch 53, and is connected to an image reading control circuit 9 via a cable 21.
is connected to.

[0020] Inside the cable 21, a DIR signal 22,
It includes a start signal 23, image information 24 such as image data and a data clock, a power supply line 25, a reading range switching signal 26, and an image information on/off signal 27.

The main control circuit includes a central processing unit (hereinafter referred to as CPU) 1 which is a program storage type calculation unit;
a program memory 2 that stores a program for executing functions as an information processing device after power is turned on; an information processing work memory 3 that stores input information processing data;
An image processing work memory 4 that stores data input from the image reading device 10, a character generator 5 that stores dot data representing characters in a dot matrix using character codes as indexes, and a liquid crystal display device 8 that displays status. , a display memory 6 that stores display data for displaying status, a liquid crystal controller 7 that transfers the data stored in the display memory 6 to a liquid crystal display device 8 at regular intervals and controls the display, and a keyboard 15 control. A keyboard controller 14 that controls the FDD 17 and an FDC 16 that controls the FDD 17
, and a printer controller 18 that controls the printer 19 and causes it to print, and these are connected by a bus line 20.

28, 29, and 30 are cables, which include a keyboard 15 and a flexible disk device 17 (hereinafter referred to as FDD).
), printer 19 are respectively connected to keyboard controller 14 and flexible disk control circuit 16 (hereinafter referred to as
It is called FDC. ), and is connected to the printer controller 18, and is configured to transmit input data, printing, and storage data via the cable.

FIGS. 3 and 4 are diagrams showing the structure and appearance of the image reading device 10.

A pair of left and right drive rollers 41 are provided at the bottom of the case 48 of the image reading device 10 . The driving roller 41 is used to guide the direction of movement of the entire image reading device 10 in order to read an image.

One of the drive rollers 40 includes a drive roller.
A slit disk 40 is attached so that the axis of rotation is the same as that of the roller 41.
The rollers 41 are configured to rotate as a unit. The slit disk 40 is provided with slits at predetermined intervals on its circumference.

On the circumference of the slit disk 40, that is, above the slits of the slit disk 40, a photointerrupter A45 and a photointerrupter B46 are provided at a predetermined interval. These constitute an encoder that detects the rotation angle of the drive roller 40. The photointerrupter A45 and photointerrupter B46 are fixed on the controller board 47.

In addition to this, on the controller board 47, there is a cable 56 for connection with the sensor board 52, and a main control circuit for an information processing device, in this example, an image reading control circuit 9.
A terminal on one side of the cable 21, which serves as a connection to the camera, and a control circuit section 55 that controls image reading are mounted.

The control circuit section 55 corresponds to the image reading section 11. The control circuit section 55 controls a photointerrupter A45, a photointerrupter B46, an image sensor 51 described later, and the like, and outputs a DIR signal 22, a start signal 23, and image data 24 constituting image information 24.
(a), and a function of generating output signals such as a data clock 24 (b).

A slit-shaped opening 43 is provided in the lower part of the case 49 in a direction perpendicular to the moving direction of the image reading device 10 when reading an image on the original 44 . Above this opening 43, a light source 42 for illuminating the original is provided, such as a light emitting diode array. Further, a lens 50 is provided at a position where it can receive reflected light from the original 44. Furthermore, an image sensor 51 is arranged on the imaging plane of the light incident on the lens 50. Note that the image sensor 51 has an image signal on/off.
It is provided on the sensor board 52 together with an off switch 53 (hereinafter referred to as switch A) and a reading range changeover switch 54 (hereinafter referred to as switch B). The switch A53 and the switch B54 respectively output an image signal on/off signal 27 and a reading range switching signal 26, and when each switch is turned on, the level is "0", and when it is turned off, the level is "0".
1” level is output.

Note that the above-mentioned DIR signal 22, start signal 23, image data 24(a), data clock 24(
b) The image signal on/off signal 27, the reading range switching signal 26, and the power supply line 25 that supplies power to the image reading device 10 are connected to the image reading control circuit 9 of the main control circuit.
and is connected via a cable 21.

An overview of the image reading operation by the image reading device 10 will be explained.

After various procedures for operation, the image reading device 10 is set on the original 44 to be read. In this state, when the document 44 is manually moved, the drive roller 41 rotates in accordance with the amount of movement. Then, in synchronization with this, the slit disk 40 and the photo interrupter A4
5 and a photointerrupter B46 detects the rotation angle of the drive roller 41 and outputs this signal to the control circuit section 55. At the same time, the light source 42 is also turned on, and the portion of the document 44 located in the opening 43 is irradiated with light. Then, the reflected light forms an image on the image sensor 51 via the lens 50, is read as image data, and is sent to the control circuit unit 55 as analog data.
is output to. The control circuit section 55 performs processing such as digitization of the input analog data, and converts the DIR signal 22
, a start signal 23, image data 24(a), data clock 24(b), etc., to the image reading control circuit 9.

Next, the configuration and operation of the control circuit section 55 will be explained in more detail using FIG.

The control circuit section 55 includes a binarization circuit 57, a moving direction detection circuit 58, a start signal generation circuit 59, and a data clock generation circuit 60.

The binarization circuit 57 has a function of converting the analog signal image data outputted from the image sensor 51 into a serial digital signal and outputting it as image data 24(a).

Signal A61 and signal B62, which are two signals having a phase difference from photointerrupter A45 and photointerrupter B46, are input to the moving direction detection circuit 58, start signal generation circuit 59, and data clock generation circuit 60. There is.

The moving direction detection circuit 58 has a function of generating a DIR signal 22 indicating the moving direction of the image reading device from the signal A61 and the signal B62. In addition, its composition,
The operation etc. will be explained in detail later.

The start signal generation circuit 59 has a function of generating and outputting a start signal 23 based on the signal A61 and signal B62, which are the rotation angle detection signals of the encoder. The start signal 23 is transmitted by the image reading device 10.
This is a synchronization signal for indicating the valid period of the image data 24(a) every time the image data 24(a) is moved by a unit amount. Therefore, although the generation cycle of the start signal 23 depends on the moving speed of the image reading device 10, the data valid period after generation is constant.

The data clock generation circuit 60 generates a signal A6.
1 and signal B62, it has a function of generating a data clock 24(b) which is a transfer clock for transferring image data.

FIG. 5(b) shows the read data on/off switch, FIG. 5(c) shows the read range changeover switch,
FIG. 5(d) shows the power supply line.

FIGS. 6 and 7 show the configuration and operation of the moving direction detection circuit 58, in which the photointerrupter A4
5. The photointerrupter B46 sets the relative positional relationship to a certain value in order to obtain the signal A61 and the signal B62 having an output phase difference φs.

FIG. 6 is a block diagram of the moving direction detection circuit 58. With this circuit, the DI outputs a "0" level when the drive roller 41 rotates in the forward direction and a "1" level when it rotates in the reverse direction.
An R signal 27 is generated. In addition, the reset signal in the figure is
This is a signal necessary for initializing the circuit.

FIG. 7(a) shows the waveforms of the signal A61 and the signal B62 when the drive roller 41 rotates in the normal direction. Since the signal A61 temporally leads the signal B62 by the phase φs, the state of the signal B62 is always at the "0" level at the rising edge of the signal A61.

FIG. 7(b) shows the waveforms of the signal A61 and the signal B62 when the drive roller 41 rotates in the reverse direction. In this case, signal A61 lags signal B62 by a time corresponding to phase φs. Therefore, the state of signal B62 is always "1" at the rising edge of signal A61.
level.

FIG. 8 shows the relationship between the moving direction of the image reading device 10 and the rotating direction of the drive roller 41. When the document 44 is moved in the forward direction as shown in the figure, the drive roller 41 rotates in the forward direction and the DIR signal 22 goes to the "0" level. Furthermore, when the drive roller 41 is moved in the opposite direction, the drive roller 41 rotates in the opposite direction, and the DIR signal 22 becomes the "1" level.

Using FIG. 9, the DIR signal 22, start signal 23, image data 24(a), data clock 24
The output timing in (b) will be explained.

The start signal 23 reads the rotational movement angle of the drive roller 41 using an encoder made of a slit disk 40 or the like, and is output as a positive pulse when a predetermined angle change occurs. Therefore, the output cycle Tsp depends on the moving speed of the image reading device 10 on the original 44,
In other words, when the moving speed is high, Tsp is short, and when the moving speed is low, Tsp is long.

Image data 24(a), data clock 2
4(b) is output only during a preset period T1 after the start signal 23 is generated. The data clock 24(b) functions as a synchronization clock for transferring the image data 24(a). Further, time T1 indicates a data valid period, which depends on the number of pixels read by the image sensor 51, and can generally be expressed as T1=(number of image sensor pixels)×(transfer clock cycle).

The DIR signal 22 outputs a "0" or "1" level in synchronization with the generation of the start signal 23, and can notify the outside of the rotational direction of the drive roller 41 at that time. Note that the method for detecting the rotation direction is as described above.

This concludes the explanation of the configuration of the image reading device 10.

Next, the configuration and operation of the image reading control circuit 9 shown in FIG. 2 will be explained with reference to FIG.

The image reading control circuit 9 has an interface function between the image reading device 10 and the information processing device.

The image reading control circuit 9 stores status information of the image reading control circuit 9, and the CPU 1
is a readable register A70 via the bus line 20,
Register B71 capable of writing control signals, data conversion circuit 76, register C72, read start detection circuit 74
, a start pulse monitoring circuit 73, and the like.

The data conversion circuit 76 is connected to the image reading device 1.
Serial image data 24(a) input from 0 to C
It has a function of converting it into parallel data so that PU1 can read it.

Register C72 has a function of storing parallel data output from data conversion circuit 76. Note that the data stored in the register C72 is
is configured to be readable.

The reading start detection circuit 74 monitors the start signal 23, detects the valid period (T1 period) of the image data 24(a) after the start signal 23 is generated, and outputs a start detection signal 78 indicating the period. It has the function of

The start pulse monitoring circuit 73 monitors the start signal 23, calculates the moving speed of the image reading device 10 from the input cycle (number of inputs per unit time) of the start signal 23, and uses the calculation result as a built-in standard. detecting the moving state of the image reading device 10 by comparing it with the speed;
It has a function of outputting a status signal 77. This start pulse monitoring circuit 73 can be realized by hardware using a retriggerable multivibrator or the like or by software executed by a CPU.

Furthermore, the counter 75 counts the data clock 24(b) and outputs a REQ signal 79 indicating that data has been completely stored in the register C72 (in this example, 8 bits) and a data conversion circuit 76. It has a function of generating two types of signals, including a latch clock 80 for transferring the image data converted into serial data to the register C72.

Further, the switch level detection circuit 85 has a function of detecting the level of the image signal on/off signal 27, which is the output signal of the switch A53, and outputting a read prohibition signal 82.

The switch level detection circuit 86 has a function of detecting the level of the reading range switching signal 26, which is the output signal of the switch B54, and outputting a range signal 83.

The buffer 81 also receives the DIR signal 22,
This circuit controls whether or not any signal among the start signal 23 and image information 24 is input to the internal circuit of the image reading control circuit 9, and uses a reading inhibit signal 82 as the control signal.

More specifically, when the switch A53 is on, the read inhibit signal 82 goes to the "0" level and the buffer 81 becomes inactive. Conversely, when it is off, the level is "1" and the buffer 81 is activated. As a result, the DIR signal 22, start signal 23, and image information 24 are input only when the switch A53 is on.

Next, the configuration of register A70 will be explained.

The register A70 is composed of a DIR bit, a status bit, a start detection bit, a REQ bit, and a range bit.

The DIR bit is set or reset depending on the level of the DIR signal 22. in particular,
When the moving direction of the image reading device 10 is forward/reverse,
The drive roller 41 rotates forward/reversely, and the DIR signal is
Indicates "0 level"/"1 level". At this time, the DIR bit becomes "0"/"1". By reading this data, the CPU 1 can know the rotational direction of the drive roller 41, that is, the moving direction of the image reading device 10. Further, the DIR bit data read by the CPU 1 is stored in the DIR flag 109 in the program memory 2.

The status bit is set or reset depending on the level of the status signal 77. in particular,
If the moving speed of the image reading device 10 is smaller than a predetermined value, that is, close to a stopped state, "0" is shown, and if the moving speed is high, "1" is shown. The CPU 1 is configured to know the movement state of the image reading device 10 by reading this data.

The start detection bit is set or reset depending on the level of the start detection signal 78. Specifically, it indicates "0" during the valid period (T1) of the image data 24(a) and data clock 24(b), and indicates "1" during the other periods. C
The PU 1 is configured to know the validity period of the image information 24 by reading this.

The REQ bit is set or reset depending on the level of the REQ signal 79. The REQ signal 79 is the image data 24 that is serially input one after another.
(a) is the number of bits of register C72, which is 8 in this example.
When data is extracted according to the bit, it functions as a completion signal for the extraction. Specifically, the register C72 is configured to indicate "1" when the data to be read by the CPU 1 is set in the register C72, and to indicate "0" after the CPU 1 reads the data until the next new data to be read is set. .

The range bit is set or reset depending on the level of the range signal 83. in particular,
The state of switch B54 is communicated to the range bit as a range signal 83. When the switch B54 is on, the reading range switching signal 26 becomes "0" level and the range bit also becomes "0". Conversely, when it is off, the reading range switching signal 26 is at the "1" level and the range bit is also at "1". By reading the range bits via the bus line 20, the CPU 1 causes the image reading device 10 to read the range bits at that time.
It is configured to know whether the image is in the image reading area or in the area where image reading is not required.

Register B71 is a register writable by CPU1. The initial bit of the register B71 outputs an initial signal 84 when data is written by the CPU1. The initial signal 84 is input to the start pulse monitoring circuit 73, reading start detection circuit 74, counter 75, and data conversion circuit 76 described above to instruct initialization of each circuit.

The register C72 is a register that can be read by the CPU 1, and functions to store the read data converted by the data conversion circuit 76 and relay the read data to the CPU 1.

FIG. 11 shows the scanning direction of the display operation in the liquid crystal display device 8 of FIG. This shows the mutual relationship with the array.

The liquid crystal display device 8 is made up of a collection of minute pixels (not shown) that have two states: on and off.
The configuration is such that display is performed by scanning the pixels in the order shown in FIG. 11(a). here,
Each memory array is defined with the flow from left to right and from top to bottom in the display as a forward direction, and the direction opposite thereto as a reverse direction.

FIG. 11(b) and FIG. 11(c) are similar to FIG.
It shows what kind of arrangement should be used to write data to each memory in order to display a). Each of these pixels corresponds one-to-one to a bit, which is a memory cell unit of the display work memory 6 and the image processing work memory 4. Furthermore, in data representing characters or images, dots representing the shape or characteristics of the characters or images are read pixels (or read images), and dots in the background are taken as background pixels (or background images).

The CPU 1 of the main control circuit shown in FIG. 2 stores the image data transferred from the image reading device 10 in the image processing work memory 4, and also stores the image data transferred from the image reading device 10 in the display work memory 6 to execute display processing. Transfer to. The data transferred to the display work memory 6 is displayed on the liquid crystal display device 8 by the display operation of the liquid crystal controller 7 shown in FIG. The image reading operation will be explained using a specific example shown in FIG.

FIG. 12A shows an image to be read, which is configured to be read in the horizontal direction with the forward direction from left to right. Here, in the read image of FIG. 12A, dot data "1" corresponds to the read pixel (black pixel) and dot data "0" corresponds to the background pixel (white pixel).

FIG. 12(b) shows the moving state of the image reading device 10 with the positional relationship shown in FIG. 12(a). The image reading device 10 follows a moving path from point P1 to point P2, stops there, changes the direction of movement, moves to point P4 via point P3, stops, and then changes the direction of movement to point P5 and then to P6. It shows. Also, points P1 and P2, P2 and P3
, P3 and P4, P4 and P5, and P5 and P6 are respectively designated as L1, L2, L3, L4, and L5. Here, routes L1, L4, and L5 are forward movement, and routes L2 and L
3 is a movement in the opposite direction.

FIG. 12(c) shows the display screen at each point P1 to P6. Icon 111, Icon 11
2. The image reading device 10 reads the icon 113, moves in the opposite direction midway, excludes the icon 111 from being displayed, and finally displays the desired icon 112 and icon 113.

At point P1, before the image is read, the screen is blank due to initial processing.

[0080] At point P2, distance L from the image starting point
The data for section 1 is read and displayed.

At point P3, due to the backward movement of the image reading device 10, the image starting point moves by a distance L2 with respect to the read image, and a part of the icon 111 is deleted.

At point P4, by continuing to move in the opposite direction, the image starting point is set to the reference position data Z=L2.
The value becomes +L3, the image starting point is further moved by a distance L3, and the icon 111 is completely deleted.

At point P5, reading of the icon 113, which had been interrupted at point P2, continues.

At point P6, the reading operation is completed, and the extraction of the icon 112 and icon 113 has been completed.

[0085] Therefore, by a series of simple movement operations from point P1 to point P6, image extraction, which is initial editing of the read figure, is realized while checking the actual image on the display screen.

Next, the processing performed during the reading operation described above will be explained with reference to the flowchart of FIG.

The image reading processing program stores the read data read by the image reading device 10 in the image processing work memory 4, and at the same time writes the data in the display memory 6 so that the screen is displayed on the liquid crystal display device 8. do.

Steps 90 and 91 show processing before the start of the image reading operation. Step 101
Steps 109 to 109 are normal image reading processes performed during forward scanning, and these processes are repeated for each line during reading. Further, the processing from step 94 to step 100 is a reference position updating process performed during reverse direction scanning, and these processes are repeated for each line during reverse direction scanning.

In step 90, the image reading control circuit 9
Initializes each circuit in the program memory 2, work registers defined on the program memory 2, and memory for storing data. For example, the CPU 1 writes data to the register B71, the start pulse monitoring circuit 73, the read start detection circuit 74, the counter 75, and the data conversion circuit 7.
Initialize 6. Further, the work registers include position data X115, position data Y116, and data Nx and Ny, which are the maximum values of each, and are each initialized to a predetermined value.

Here, using FIG. 12(a), position data X115, position data Y116, and data Nx, Ny
I will explain about it.

FIG. 12(a) shows the relationship between the image to be read and the position data X, Y, Nx, Ny, and will be explained using an example where the image is read from left to right in the horizontal direction by the image reading device 10. .

The position data X115 is updated in synchronization with the start signal 23 which is read by an encoder and is output when a predetermined angle change occurs. Also, the maximum value of position data X115 (
The rightmost value) is set as Nx. The position data Y116 is extracted from the image data 24(a) sent as serial data from the image sensor 51 according to the number of bits in the register C72 (8 bits in this example), and updated in synchronization with the reading operation of the CPU 1. It is something that will be done. Therefore, the value is determined for each reading line, that is, for each position data X11.
It changes sequentially from 1 to Ny corresponding to 5. Note that the value of Ny is defined by the following equation.

Ny=number of image sensor pixels/cutting unit (
8 bits) Furthermore, in step 90, steps 95 and 1 to be described later are performed.
The reference position data Z117 handled as 00 and 104 and defined in the program memory 2 is initialized (in this case, it is zero-valued).

[0094] Here, the reference position data Z117 is a mark for specifying a processing target when processing such as reading is performed when using the read data stored in the memory. For example, in this embodiment, the data stored at the address indicated by the reference position data Z117 is displayed at the leftmost position of the liquid crystal display device 8. As described above, the reference position data Z117 is configured to update the reference position in the forward direction, that is, to increase the value, by scanning the image reading device 10 in the reverse direction. . Further, initially, position data X115=reference position data Z117.

In step 91, the operator instructs the direction of the read image and the read image editing mode using the keyboard 15.
Use to input. When inputting the reading direction, for example, if the read image is in the vertical direction with respect to the display screen, the operator specifies vertical reading, and if the read image is in the horizontal direction, the operator specifies horizontal reading. When vertical reading is instructed, the CPU 1 stores data in the image processing work memory 4 and display memory 6 so that the data is oriented vertically with respect to the display screen, and similarly when horizontal reading is instructed, , the CPU 1 stores data in the image processing work memory 4 and the display memory 6 so as to be oriented horizontally with respect to the display screen.

Step 92 is for detecting the start of the image reading operation, and while the start detection bit of register A70 is "1", step 92 is repeated;
”, the process advances to step 93. That is, until the reading operation is started, the process in step 92 is repeated and the process is in a standby state.

Step 93 is a process of detecting the moving direction of the image reading device 10. Specifically, register A
This is executed by the CPU 1 reading and checking the DIR bit 70. As a result, if the DIR bit is "0", that is, if the image reading device 10 is moving in the forward direction, the process advances to step 101 and normal image reading processing is performed. On the other hand, if the DIR bit is "1", that is, if the image reading device 10 is moving in the opposite direction, the process advances to step 94 and the reference position is updated.

First, the image reading process after step 101 will be explained.

In step 101, position data X115 is incremented (
Plus 1). In other words, the next line after the previously read line is to be read.

In step 102, in order to start reading the image data of the line corresponding to the position data X115 updated in step 101, position data Y116 indicating the position on the line is initialized. Thereby, reading can be started from the end point of the line indicated by the position data X115.

In step 103, R of register A70 is
The EQ bit is checked to determine whether the transfer of image data from the data conversion circuit 76 to the register C72 has been completed. While the REQ bit is "0", that is, if the transfer is not completed, the transfer continues, and step 103 continues to be executed during this time. REQ bit is “1”
”, the process moves to step 104.

Step 104 is a process for determining whether the image reading device 10 is currently in the unnecessary data area (0≦X<Z) or in the confirmed area (Z≦X). The location data X115 is only updated without being imported. If the position data X115 is in the unnecessary data area, the process moves to step 108, and if it is in the confirmed area, the process moves to step 105 to perform data import processing.

In step 105, the CPU 1 takes in the read data stored in the register C 72 into an internal register (not shown) of the CPU 1 via the bus line 20.

[0104] In step 106 and step 107,
The read data taken into the internal register of CPU1 in step 105 are transferred to position data X115, position data Y
116, the data is stored at the address calculated with reference to the reference position data Z on the image processing work memory 4 and the display memory 6. Specifically, the value (position data X - reference position data Z) is used as the position address in the reading direction. When storing, the direction of the read image specified by the operator in step 91 is referred to. Step 9
1, when the direction of the read image is specified as vertical, the image processing work memory 4 and the display memory 6
Data is stored from the top to the bottom of the display screen.

Further, when the direction of the read image is specified as horizontal, data is stored in the image processing work memory 4 and the display memory 6 from left to right with respect to the display screen. Due to this storage, screen display is also performed at any time.

Step 108 is executed after the read unit data stored in the register C72 is transferred to a predetermined memory, and the position data Y116 is incremented.

In step 109, the position data Y116 updated in step 107 is compared with the data Ny to determine whether the reading operation for one line corresponding to the position data X115 has been completed. As a result, the position data Y
If 116 matches the data Ny, it is determined that reading for that line has been completed, and the process moves to step 110. On the other hand, if it is smaller, it is determined that the reading has not been completed, and the process returns to step 103 to continue reading data for the unread portion of the line.

Step 110 is for determining whether a series of image data reading operations have been completed. If the position data X115 and the data Nx are compared and the reading operation in a predetermined range is completed, or if a reading end instruction is input from the keyboard 15, the operation is ended. If not, execution returns to step 92 to process the next line.

Next, the reference position updating process from step 93 to step 100 will be explained.

In step 93, the DIR bit is set to 1.
In other words, if it is detected that the object is being moved in the opposite direction, the process proceeds to step 94.

In step 94, the position data X115 is updated to be smaller (decrement=minus 1).

[0112] In step 95, the reference position data Z117 is updated to increase (increment=plus 1) in accordance with the moving distance in the opposite direction. In other words, the reference position is moved in the forward direction. This is then used as a new reference for the starting point of data to be stored in the image processing work memory 4 and the display memory 6. As a result, the image data corresponding to the section between the newly updated reference position data Z117 and the position data X=0 is deleted in step 100, which will be described later.

Step 96 initializes the position data Y116 in order to start reading one line of image data for the position data X115 updated in step 94.

In step 97, the REQ of register A70 is
From the data conversion circuit 76 that checks the bit and converts the image data 24(a) serially transferred from the image reading device 10 into parallel read data, the register C
It is determined whether the transfer of the image data to 72 is completed. While the REQ bit is "0", step 97 continues to be executed, and only when the REQ bit becomes "1" does step 98 proceed.

At step 98, the position data Y116 is incremented to update the position data Y116. In this case, only the position data Y116 is updated, and no data is read.

Step 99 compares the position data Y116 updated in step 98 with data Ny to determine whether the reading operation for one line corresponding to position data X115 has been completed. As a result, if it matches the data Ny, it is assumed that the process has ended and the process moves to step 100. If it is smaller, it is assumed that the data has not been completed and the process returns to step 97 to continue reading the data. However, as mentioned above, in this case, no data is actually read.

In step 100, the reference position data Z117 updated in step 95 in accordance with the movement distance in the reverse direction.
The display screen and work memory are compatible with the above. Specifically, the data in the image processing work memory 4 and the display memory 6 are moved and updated using the new reference position data Z117 as the origin. As a movement update method, all data is moved using the following address calculation.

Pre-update data address: S Post-update data address: S-(Ny×Z) In addition, in this embodiment, in step 100, data is deleted from the starting point of the image according to the backward movement distance. This method is not limited to this method. For example, it is possible to simply not display the content without deleting it. Furthermore, as another method, it may be distinguished from other parts (data to be determined) by using shading, half-brightness display, or the like.

As described in detail above, according to this embodiment, the direction of movement, etc. is monitored, and when there is movement in the opposite direction, the standard is set according to the distance of movement in the opposite direction. Image data can be deleted from the location. Therefore, it is possible to perform the initial editing of extracting or deleting image data while checking the read image, without forcing the operator to interrupt his or her thinking at the same time as the reading operation, with only a series of simple operations such as moving the image reading device. This makes it possible to improve operability.

[0120]

As described above, according to the present invention, by moving the image processing device over the recording medium, initial editing such as deleting unnecessary portions of the read data can be performed simultaneously with reading.
This can be done while checking the read image on the screen, and subsequent input operations for editing the read data can be simplified.

Furthermore, since it is possible to change the reading start portion of the image while confirming it on the screen after the data has been read once, operability can be improved.

[Brief explanation of drawings]

FIG. 1 is a flowchart of data processing in an embodiment of the present invention.

FIG. 2 is a block diagram showing the configuration of this embodiment.

FIG. 3 is a longitudinal sectional view of the image processing device.

FIG. 4 is a cross-sectional view taken along line AA of the image processing device shown in FIG. 3;

FIG. 5 is a block diagram showing the configuration of a circuit for generating various control signals.

FIG. 6 is an explanatory diagram showing the configuration of a moving direction detection circuit 58.

FIG. 7 is an explanatory diagram showing the states of signals related to the movement of the image reading means.

FIG. 8 is an explanatory diagram showing the moving direction of the image reading means and the rotating direction of the moving roller.

FIG. 9 is an explanatory diagram showing the timing of image reading.

FIG. 10 is a block diagram showing the configuration of an image reading control circuit 9. FIG.

FIG. 11 is a diagram illustrating the relationship between a display screen and a data array stored in a memory.

FIG. 12 is an explanatory diagram showing the relationship between an image to be read, an image reading operation, and a screen display of read data.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1... CPU, 2... Program memory, 3... Information processing program, 4... Work memory for image processing, 8... Liquid crystal display device, 9... Image reading control circuit, 10... Image reading device,
11... Image reading unit, 15... Keyboard, 22... DIR
Signal, 24... Image information, 45... Photo interrupter, 4
6... Photo interrupter, 51... Image sensor, 53
...Image signal on/off switch, 54...Reading range selection switch, 55...Control circuit section, 57...Binarization circuit, 5
8...Movement direction detection circuit, 59...Start signal generation circuit,
73...Start pulse monitoring circuit.

Claims (6)

[Claims] 1. An image reading means that moves on a recording medium, detects an image visibly recorded on the recording medium, and sequentially outputs the image as image data; and an image data outputted by the image reading means. - a storage means for storing data; a movement direction detection means for detecting the direction of the movement and outputting it as movement direction data; a unit movement detection means for detecting the movement for each unit distance and outputting the movement direction data; The unit movement detecting means has reference position information indicating a predetermined position and/or area of the image data stored in the storage means, and when the direction data indicates one predetermined direction, the unit movement detecting means An image processing apparatus characterized in that the reference position information is sequentially updated in response to output from the image processing apparatus. 2. The control means has a function of performing processing for reading and outputting image data stored in the storage means from a position and/or area indicated by the reference position information. The image processing apparatus according to claim 1, characterized in that it has: 3. The image processing apparatus according to claim 2, wherein said control means performs said processing every time said reference position information is updated. 4. An image display processing apparatus comprising the image data processing apparatus according to claim 3 and display means for displaying the image data outputted by said control means. 5. The image display processing apparatus according to claim 4, wherein the display means has a function of making the display mode of the area indicated by the reference position information different from that of other areas. 6. The control means has a function of erasing image data at a position and/or area indicated by the reference position information from the image data stored in the storage means. The image processing apparatus according to claim 1.