JPH065854B2 - Image input processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Field of Application> The present invention is designed to optically read data by manually sweeping an image sensor unit along a data surface on which data such as characters and images are written. The present invention relates to an image input processing device.

<Prior Art> This type of image input processing device is generally provided with a device for detecting the amount of movement such as a rotary encoder,
When the movement amount detecting device detects the movement by the manual operation of the image sensor unit, the data reading unit is driven to start the data reading operation, and the read data is made to correspond to the detection position by the movement amount detecting device. It is designed to be stored in memory.

<Problems to be Solved by the Invention> By the way, the above-mentioned movement amount detection device has extremely high resolution accuracy in recent years in order to improve its detection capability. Therefore, the movement amount detection device has high resolution accuracy even for a slight movement that the operator intends to keep the sensor unit stationary at the start of the sweep when the input device, that is, the image sensor unit is held on the data surface and started to sweep. However, there is a problem that the data reading operation is started and unnecessary data is input.

<Objects of the Invention> The present invention has been made in view of the above-mentioned conventional problems, and it is possible to input read data only when the amount of movement of the image sensor unit to be manually swept exceeds a certain amount. It is an object of the present invention to provide an image input processing device which excludes unnecessary data input.

<Means for Solving Problems> In order to achieve the above object, the image input processing device of the present invention includes an image sensor unit for manually sweeping a data surface,
A movement amount detection unit that outputs a number of detection pulses corresponding to the movement amount of the sensor unit; and a data reading unit that optically reads and outputs the data on the data surface in synchronization with the output of the detection pulse, Detecting pulse counting means and output time interval of the detecting pulse from the moving amount detecting unit when the image sensor unit is moved by a manual operation for reading a data surface at a moving speed of a predetermined speed or more and for a predetermined distance or more. While repeatedly measuring a longer time and outputting a reset signal to the counting means each time the counting ends, the counting means resets the counting operation by the detection pulse or the counting output of the counting means, and the counting means. A write control unit that outputs a write command signal when the count reaches a set value, and the data read unit when the write command signal is not input. And a control unit for preventing the read data from the acquisition unit from being stored in the memory and controlling the read data from the data reading unit to be stored in the memory from the time when the write command signal is input from the write control unit. It is characterized by the configuration provided.

<Operation> When the image sensor unit is held by hand and aligned with the data reading start position on the data surface, even if the image sensor unit moves slightly, the movement amount detection unit detects this and a detection pulse is output. Since the movement amount of the image sensor unit at this time is smaller than the movement amount corresponding to the number of detection pulses set in the writing control unit, the detection pulse is not output at intervals smaller than the time measured by the time measuring means. So
Since the time counting means outputs the reset signal to the counting means each time before the time counting means is reset with the detection pulse, the counting means resets the count value of the detection pulse so far and resets the initial value. Count again from the state.
Therefore, for example, the count number of the counter that counts the detection pulse at this time does not reach the set value of the write control unit, and the write command signal is not output from the write control unit, so unnecessary data read by the data reading unit Is never stored in memory.

<Examples> Hereinafter, preferred examples of the present invention will be described in detail with reference to the drawings.

First, the outline of the image input processing apparatus of the present invention will be described. As shown in FIG. 2, an image sensor unit 1 serving as a data input unit by a manual sweep for gripping and moving along a data surface, and this image sensor. A printer unit 2 for printing the data read and input by the unit 1. The image sensor unit 1 includes a data reading unit that optically reads data written on the data surface, and a movement amount detection unit that outputs a detection pulse as the image sensor unit 1 moves on the data surface. ing.

As shown in FIG. 3, this movement amount detecting portion is provided at the lower end portion of the main body case 1a of the image sensor portion 1 with a detecting pulley 3
A is attached so as to be exposed slightly below the main body case 1a, and the detection pulley 3a rolls on the data surface as the sensor unit 1 moves. The rotation of the detection pulley 3a is transmitted to the transmission pulley 3c by the belt 3b, and the transmission pulley 3c has a rotation detection plate 3d in which a large number of slits are radially formed at equal intervals on the peripheral edge of the disk. , Is fixed coaxially so as to rotate integrally, and the rotation detecting plate 3d is provided with a photo interrupter 3e which detects a slit and outputs a detection signal. The resolution accuracy is set high by reducing the pitch of.

Next, in FIG. 1 showing an embodiment of the present invention, the movement amount detection unit 3 is the same as that described in FIG. Then, the data reading unit 4 built in 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 to data such as characters and images written on the paper. The light emitting section 4a for irradiating and the light emitting section 4
The light receiving section 4b receives the reflected light corresponding to the data in response to the light projected from a and reads the data.

The detection signal output from the movement amount detection unit 3 is waveform-shaped into a pulse signal by the waveform shaping circuit 5, and this detection pulse signal is input to the reset terminal R of the integration circuit 6. The integrator circuit 6 inputs the clock pulse having a constant pitch output from the pulse generator 7 from the input terminal I and integrates it, and resets the reset terminal R of the counter 8 when the integrated value exceeds a certain value. Output a signal. Also,
The reset signal output from the integrating circuit 6 is supplied to the delay circuit 9
As a result, the signal is again input to the reset terminal R of the integrating circuit 6 after a certain delay time has elapsed. The counter 8 is the waveform shaping circuit 5
The detection pulse output from the counter is fetched from the count input terminal I and counted, and the count signal is output to the write control unit 10 including a comparison circuit.

The writing control unit 10 compares the count signal of the counter 8 with the setting signal stored in the setting device 11 and corresponding to the number of detection pulses of the predetermined movement amount, and when the count signal becomes larger than the setting signal, the central processing unit. A write command signal is output to 12. The central processing unit 12 performs various kinds of signal processing according to a program stored in the read-only memory (ROM) 13, and synchronizes with the detection pulse signal output from the waveform shaping circuit 5 to emit light from the light emitting unit 4a.
Is driven to emit light, and a data read signal output from the light receiving unit 4b is taken in by a write command signal input from the write control unit 10 to be temporarily stored in the memory 14, and the read data is also printed by the printing unit of the printer 2 described above. Print out from 15.

Next, the operation of the above-described embodiment will be described. When the image sensor unit 1 moves slightly when the image sensor unit 1 is gripped and aligned with the reading start position of the data surface to be read, the movement amount is detected accordingly. Pulley 3 for detecting part 3
a rotates, and a slit of the rotation detection plate 3d that rotates together with a causes a detection signal to be output from the photo interrupter 3e, which is converted into a detection pulse signal by the waveform shaping circuit 5 and integrated for each output of this detection pulse signal. The circuit 6 is reset.

Since the detection pulse signal at this time is not output continuously because it is not in the sweep state and becomes an intermittent output, until the integrating circuit 6 is reset by this detection pulse signal and is subsequently reset by the detection pulse signal. During this period, the output clock pulse of the pulse generator 7 has an integral value of the integrator circuit 6 of the integrator circuit 6 becomes a certain value or more, and the reset signal output from the integrator circuit 6 resets the counter 8 and the memory 14. The integration circuit 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 set value of the setting device 11, and therefore the write control unit 10
The write command signal is not output from the data reading unit 4, and the read data from the light receiving unit 4b of the data reading unit 4 is blocked by the central processing unit 12 and is not stored in the memory 14. That is, after the integrating circuit 6 is reset by the detection pulse signal,
Unless the component circuit 6 is reset by the detection pulse signal during the time until the integrated value of the integration circuit 6 reaches a predetermined value, the reset signal is intermittently output from the integration circuit 6 and the counter 8 is reset each time. . In other words,
The image sensor unit 3 is moved at a predetermined moving speed or more,
The read data is prevented from being stored in the memory 14 unless it is moved by a predetermined distance or more.

Then, when the manual sweep operation of the image sensor unit 1 is started, a detection signal is continuously output from the movement amount detection unit 3 as the image sensor unit 1 moves, and the generation interval of the detection pulse signal is integrated. In the circuit 6, the integrated value becomes shorter than the time required to reach a constant value, and the reset signal is no longer output from the integrating circuit 6. As a result, it is detected that the moving speed of the image sensor unit 1 has reached a certain level or more.

When the reset signal is not output from the integration circuit 6 in this way, the counter 8 continuously counts the detection pulse signal because it is not reset, and the count value becomes equal to or larger than the set value, and the write control member 10 issues the write command. A signal is output, and the central processing unit 12 performs signal processing so that the read data from the light receiving unit 4b is temporarily stored in the memory 14. This prevents the read data from being stored in the memory 14 when the image sensor unit 1 starts moving and reaches a certain distance in a moving state and when the angle is not stable.

FIG. 4 shows another embodiment of the present invention, in which the same or equivalent parts as those in FIGS. 1 to 3 are designated by the same reference numerals. The counter 16 that counts the detection pulse signal output from the waveform shaping circuit 5 counts a predetermined number, for example, “2”, and then the central processing unit 1
7. A signal is output to each of the reset terminal R of the timer circuit 18 and the set terminal S of the write control unit 19 including a flip-flop. The write control unit 19 outputs a signal when the counter 16 does not output a signal. A memory 14 including a RAM in a reset state by a reset signal input to the reset terminal R from 17 and in a set state by a signal input to the set terminal S
A write command signal is output to. Further, the timer circuit 18 inputs the output signal of the counter 16 to the reset terminal R for resetting, outputs a reset signal to the reset terminal R of the counter 16 by measuring a fixed timer time, and resets itself. The reset signal is also input to the terminal R to enter the reset state again.

Therefore, in the state immediately before the manual sweep operation of the image sensor unit 1 is started, the detection pulse signal from the movement amount detection unit 3 is intermittently output, and the count of the counter 16 that counts this detection pulse signal is counted. Before the number becomes "2", the counter 16 is reset by the reset signal output from the timer circuit 18 due to the lapse of the timer time of the timer circuit 18, and the count number "2" is not reached from the counter 16. As a result, no signal is output and the write control unit 19 maintains the reset state, so that the read data from the light receiving unit 4b is not written in the memory 14.

When the manual sweeping operation of the image sensor unit 1 is started, the detection pulse signal is continuously output from the movement amount detection unit 3, so that the count number of the counter 16 is output from the timer circuit 18 as a reset signal. Before it reaches “2”, the write control unit 19 is activated by the output signal of the counter 16.
At the same time that the data is set, the data reading start signal is also input to the central processing unit 17. The memory 14 becomes writable by the write command signal output from the write control unit 19 in the set state, and the light receiving unit 4
The read data from b is fetched and sequentially stored at a predetermined address. Also in this embodiment, since the reading data read-in prohibition time is set by setting the input of two pulses to the counter 1 within the timer time of the timer 18, the slight movement of the image sensor unit 1 immediately before the manual sweeping is performed. It is possible to prevent unnecessary reading data from being stored in the memory 14 at the time and immediately after the manual sweep in which the movement state is not stable.

<Effects of the Invention> As described in detail above, according to the image input processing apparatus of the present invention, the detection pulse output from the movement amount detection unit along with the movement of the image sensor unit is counted by the counting means, and the detection pulse is detected. Alternatively, the counting means is reset periodically every time the counting time preset in the counting means reset by the counting output of the counting means elapses, and the count value of the counting means is equal to the predetermined moving amount. Since the set value is output and the read data is stored in the memory and stored, when the image sensor is equipped with a moving amount detector with high resolution accuracy and the image sensor is manually swept, Read data by a slight movement, and when moving a certain distance until the movement state and angle of the image sensor section stabilize. It is possible to prevent unnecessary read data from being stored in the memory.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an image input processing apparatus of the present invention, FIGS. 2 and 3 are perspective views of the entire configuration of FIG. 1 and a perspective view of a movement amount detector, respectively. FIG. 6 is a block diagram of another embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Image sensor part 3 ... Moving amount detection part 4 ... Data reading part 8, 16 ... Counter 10, 19 ... Writing control part 14 ... Memory.

Claims (1)

[Claims] 1. An image sensor unit for manually sweeping a data surface, a moving amount detecting unit for outputting a number of detection pulses corresponding to the moving amount of the sensor unit, and a data surface for synchronizing with the output of the detection pulse. A data reading unit for optically reading and outputting data, and counting means for the detection pulse;
The image sensor unit is repeatedly operated by a manual operation for reading the data surface at a moving speed that is equal to or higher than a predetermined speed and that is longer than a predetermined distance and that is longer than the output time interval of the detection pulse from the moving amount detection unit. And outputs a reset signal to the counting means each time the counting ends, and the counting means resets the counting operation by the detection pulse or the counting output of the counting means, and the count of the counting means reaches a set value. A write control unit that outputs a write command signal at a time point, and a read command signal is input from the write control unit while preventing the read data from the data reading unit from being stored in the memory when the write command signal is not input. From the time point, the control is performed so that the read data from the data reading unit is loaded into the memory and stored. Image input processing apparatus characterized by comprising; and a part.