JPS63103558A - Image input processor - Google Patents

Abstract

PURPOSE:To prevent an undesired data from being stored in a memory by fetching and storing a read data when the count of a detection pulse reaches a setting value. CONSTITUTION:When the manual sweep operation of an image sensor is started and its moving speed reaches a prescribed value or above the generation interval of a detection pulse signal from a moving quantity detection section 3 is shortened more than the time of an integration value in a moving speed detection section 6 reaching a prescribed value and no reset signal is outputted from the moving speed detection section 6. Since a counter 8 is not reset, a detection pulse signal is counted continuously, the count reaches a set value or above, a write command signal is outputted from a write control section 10 and a central processing unit 12 applies signal processing so as to store a read data from a reception section 4b into a memory 14 temporarily. Thus, the storage of undesired read data into a memory 14 is blocked while the moving speed of the image sensor section reaches a prescribed speed or above and the angle is not stable.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is a method for optically reading data by manually sweeping an image sensor section along a data surface on which data such as characters or images is written. The present invention relates to an image input processing device.

<Prior Art> This type of image input processing device is generally equipped with a device for detecting the amount of movement, such as a low-resolution encoder.
When this movement amount detection device detects manual movement of the image sensor section, the data reading section is driven to start reading data, and the read data is made to correspond to the position detected by the movement amount detection device. It is stored in memory.

<Problems to be Solved by the Invention> Incidentally, in recent years, the resolution accuracy of the above-mentioned movement amount detection device has become extremely high in order to improve its detection ability. Therefore, when the input device, that is, the image sensor section is held in hand and placed on the data surface and the sweep is started, the movement amount detection device detects even the slightest movement of the sensor section when the operator intends to keep it stationary. There is a problem in that the data is detected due to a high value, and the data reading operation is started and unnecessary data is input.

<Purpose of the Invention> The present invention has been made in view of the above-mentioned problems of the conventional art, and it is possible to read data manually only when the moving speed of the manually swept image sensor section exceeds a certain level. The object of the present invention is to provide an image input processing device that eliminates the need for manual processing of unnecessary data.

<Means for Solving the Problems> In order to achieve the above object, the image input device of the present invention outputs detection pulses to an image sensor unit that manually sweeps a data surface as the sensor unit moves. It is equipped with a movement amount detection section, a data reading section that optically reads the data on the data surface when the detection pulse is output, a counter that counts the detection pulse, and a write operation when the count number of this counter reaches a set value. The present invention is characterized by a configuration comprising a write control section that outputs a command signal, and a memory that captures and stores data read by the data reading section in response to the output of the write command signal from the write control section.

<Function> When the image sensor section is held in hand and aligned with the data reading start position on the data surface, if the image sensor section moves even slightly, the movement amount detection section detects this and outputs a detection pulse. , this detection pulse is i! Since the counter that counts Va is not output, the counter that counts it is reset by the movement speed detection unit and the count number does not reach the set number (Since the write command double angle is not output from the write control unit, the data reading unit Unnecessary read data is not stored in memory.

<Embodiments> Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

First, to explain the outline of the image input processing device of the present invention, as shown in FIG. and a printer section 2 for printing data read and input by the section 1.

- The image sensor section 1 has a built-in data reading section that optically reads the data written on the data surface, and a movement amount detection section that outputs detection pulses as the image sensor section 1 moves on the data surface. has been done.

As shown in FIG. 3, this movement amount detection section includes a detection pulley 3 at the lower end of the main body case 1a of the image sensor section 10.
The detection pulley 3a is attached with the part a exposed slightly below the main body case 1a, and as the sensor part 1 moves, the detection pulley 3a
is now moving to the data side. The rotation of this detection pulley 3a is controlled by the transmission pulley 3C by the bell 1-3b.
A rotation detection plate 3d, in which a large number of slits are formed radially and at equal intervals on the periphery of a disc, is coaxially fixed to the transmission boob IJ3C so as to rotate together. There is. Further, the rotation detection plate 3d has a configuration in which a photointerrupter 3e that detects a slit and outputs a detection signal is provided oppositely, and the pitch of the slit is made small to increase the resolution accuracy ( .

Next, in FIG. 1 showing an embodiment of the present invention, the movement amount detection section 3 is the same as that explained in FIG. 3. The data reading unit 4, which is built into the image sensor unit 1 together with the movement amount detection unit 3, emits light in synchronization with the detection pulse of the movement amount detection unit 3, for example, on data such as characters or images written on the paper. A light emitting section 4a that emits light, and this light emitting section 4
The light receiving section 4b receives the reflected light corresponding to data in response to the light emitted from the light source 4b and reads the data.

The detection signal output from the movement amount detection section 3 is waveform-shaped into a pulse signal by a waveform shaping circuit 5, and this detection pulse signal is input to a reset terminal R of a movement speed detection section 6 consisting of an integrating circuit. The moving speed detection unit 6 inputs and integrates clock pulses of a constant pitch output from the pulse generator 7 from an input terminal I, and when the integral value exceeds a certain value, outputs a signal to a reset terminal R of a counter 8. Outputs a seven-node signal. Further, the reset signal outputted from the moving speed detecting section 6 is input again to the reset terminal R of the moving speed detecting section 6 after a certain delay time has elapsed by the delay circuit 9. The counter 8 takes in the detection pulses outputted from the waveform shaping circuit 5 from the count input terminal 1, counts them, and outputs a count signal to the write control section 1° consisting of a comparison circuit.

The write control unit 10 compares the count signal of the counter 8 with the movement amount setting signal stored in the setting device 11, and sends a write command signal to the central processing unit 12 when the count signal becomes larger than the setting signal. Output. The central processing unit 12 is a read-only memory (ROM)
It performs various signal processing according to programs stored in the waveform shaping circuit 5, and drives the light emitting section 4a to emit light in synchronization with the detection pulse signal output from the waveform shaping circuit 5, and also processes the data reading signal output from the light receiving section 4b. The read data is captured by inputting a write command signal from the write control section 10 and temporarily stored in the memory 14, and the read data is printed out from the printing section 15 of the printer 2 described above.

Next, to explain the operation of the above embodiment, if the image sensor section 1 moves even slightly when the image sensor section 1 is gripped and aligned with the reading start position of the data surface to be read, the amount of movement is detected accordingly. Detection pulley 3 of section 3
a rotates, and a detection signal is output from the photointerrupter 3e through the slit of the rotation detection plate 3d that rotates together with this, which is converted into a detection pulse signal by the waveform shaping circuit 5, and moves every time this detection pulse signal is output. The speed detection section 6 is reset.

Since the detection pulse signal at this time is not in the sweep state, it is not output continuously, but is output intermittently, so after the moving speed detection unit 6 is reset by this detection pulse signal, it is reset by the next detection pulse I 3. Until the clock pulse output from the pulse generator 7 is integrated, the integral value of the moving speed detecting section 6 reaches a certain value or more, and the moving speed detecting section 6
The counter 8 and the memory 14 are reset by the reset signal outputted from the controller, and the moving speed detector 6 itself is reset after the delay time has elapsed. Therefore, the count number of the counter 8 that counts the detection pulse signal does not exceed the setting value of the setting device 11, and therefore, the write command signal is not output from the write control section 10, and the light receiving section of the data reading section 4 Data read from 4b is blocked by central processing unit 12 and is not stored in memory 14. That is, unless the moving speed detecting section 6 is reset by the detection pulse signal during the time until the integral value of the moving speed detecting section 6 reaches a predetermined value after the moving speed detecting section 6 is reset by the detection pulse signal, That is, unless the image sensor section 1 is moved at a predetermined speed, the moving speed detection section 6 intermittently outputs a reset signal, and the counter 8 is reset each time. In other words, storage of read data in the memory 14 is prevented unless the image sensor section 3 is moved at a predetermined moving speed or more and is moved a predetermined distance or more.

When the manual sweeping operation of the image sensor section 1 is started, a detection signal is continuously output from the movement amount detection section 3 as the image sensor section 1 moves, and the moving speed of the image sensor section 1 is When the value exceeds a certain value, the generation interval of the detection pulse signal becomes shorter than the time required for the integral value to reach a certain value in the moving speed detecting section 6, and the reset signal is no longer output from the moving speed detecting section 6. It is detected that the moving speed of the sensor unit 1 has reached a certain level or higher.

In this way, when the reset signal is no longer output from the movement speed detection unit 6, the counter 8 is not reset and continues to count the detection pulse signals continuously, and when this count value exceeds the set value, the write control unit 10 outputs a write command No. 13, and the central processing unit 12 performs signal processing to temporarily store the read data from the light receiving section 4b in the memory 14. As a result, the image sensor section 1
This prevents unnecessary read data from being stored in the memory 14 when the moving state and angle are not stable until the moving speed reaches a certain level.

FIG. 4 shows another embodiment of the present invention, in which the same or equivalent parts as in FIGS. 1 to 3 are given the same reference numerals. Then, when a counter 16 that counts the detection pulse signals output from the waveform shaping circuit 5 counts a predetermined number, for example, "2", the central processing unit 1
7. Signals are output to the reset terminal R of the moving speed detection section 18 consisting of a timer circuit and the write control section 190 cent terminal S consisting of a flip-flop, respectively.The write control section 19 receives the signal from the counter 16. When no output is being output, a reset signal input from the central processing unit 17 to the reset terminal R puts it in the reset state, and a signal input to the set terminal S puts it in the sent state, and outputs a write command signal to the memory 14 consisting of a RAM. Further, the moving speed detecting section 18 is reset by inputting the output signal of the counter 16 to the reset terminal R, and the moving speed detecting section 18 is reset by inputting the output signal of the counter 16 to the reset terminal R.
A reset signal is output to the reset terminal R of the terminal R, and a reset signal is also input to the terminal R of itself, and the reset state is again established.

Therefore, in the state immediately before the manual sweeping operation of the image sensor section 1 is started, the detection pulse signal from the movement amount detection section 3 is intermittently output, so that the detection pulse (
The count number of the counter 16 that counts words is "2".
”, the counter 16 is reset by the reset signal output from the moving speed detecting unit 18 as the timer time of the moving speed detecting unit 18 elapses, and the counter 16 does not reach the count number “2”. As a result, no signal is output, and the mouthing control section 19 maintains the reset state, so that data read from the light receiving section 4b is not written to the memory 14.

When the manual sweep operation of the image sensor unit 1 is started, a detection pulse signal is continuously output from the movement amount detection unit 3, and when this movement speed exceeds a certain level, the counter 1
The count number of 6 reaches "2" before the moving speed detection section 18 outputs the cent signal, and at the same time the write control section 19 is set to the set state by the output signal of the counter 16, the data is also sent to the central processing unit 17. A reading start signal is input. The memory 14 becomes ready for writing by the write command signal outputted from the write control section 19 which is in the set state, and the read data from the light receiving section 4b is taken in and sequentially written to a predetermined address. do. In this embodiment as well, by setting the input of two pulses to the counter 16 within the timer time of the moving speed detecting section 18, a period of time during which reading data is prohibited is provided. Memory 1 of unnecessary read data during slight movement and immediately after manual sweep when the movement state does not reach a certain movement speed and is unstable.
4 can be prevented.

<Effects of the Invention> As detailed above, according to the image input processing device of the present invention, the detection pulses output from the movement amount detection section as the image sensor section moves are counted by the counter, and the detection pulses of the image sensor section are The counter is reset by the movement speed detector until the movement speed reaches a certain level, and when the count value of this counter reaches the set value, a write command signal is output and the read data is captured and stored in the memory. With this configuration, in a device that is equipped with a movement amount detection section with high resolution accuracy and manually sweeps the image sensor section, the read data due to a slight movement when the image sensor section is placed at the reading start position, and the read data of the image sensor section. It is possible to prevent unnecessary read data from being stored in the memory during movement until a movement speed at which the movement state and angle are stabilized is reached.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of an embodiment of the image input processing device of the present invention, FIGS. 2 and 3 are a perspective view of the overall configuration of FIG. 1 and a perspective view of the movement amount detection section, respectively, and FIG. 4 FIG. 2 is a block diagram of another embodiment of the present invention. 1... Image sensor section 3... Movement amount detection section 4... Data reading section 6.18... Movement speed detection section 8.16... Counter 10.19... Write control section 14. ...Memory patent applicant Sharp Corporation Agent
Patent Attorney Nishi 1) New Figure 2

Claims (1)

[Claims] (1) The image sensor section that manually sweeps the data surface has a movement amount detection section that outputs a detection pulse as the sensor section moves, and a data reader that optically reads the data on the data surface when the detection pulse is output. a means for counting the detected pulses; a moving speed detection section for resetting the counting means when a predetermined number of pulses are not output in a predetermined period of time; The present invention is characterized by comprising: a write control unit that outputs a write command signal when a set value is reached within a set value; and a memory that captures and stores data read by the data reading unit by outputting the write command signal. Image input processing device.