JPS63103556A - Image input processor - Google Patents

Abstract

PURPOSE:To block the storage of an unnecessary read data into a memory by adopting a constitution that a read data is fetched in the memory when the count of a detection pulse outputted from a moving amount detection section reaches a setting value. CONSTITUTION:When the manual sweep of an image sensor is started, a detection signal is outputted continuously from a moving amount detection section 3, the generation interval of a detection pulse signal is shorter than a time when an integration value reaches a prescribed value in an integration circuit 6 and no reset signal is outputted from the integration circuit. Since a counter 8 is not reset, a detection pulse signal is counted continuously and when the count reaches a set value or above and 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 tentatively the read data from a light receiving section 4b into a memory 14. Thus, the storage of the read data into the memory 14 is blocked if the moving state and angle are not stable from the start of movement of the image sensor to the arrival of a prescribed distance.

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 rotary 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 In recent years, the resolution and accuracy of the above-mentioned movement amount detection devices have become extremely high in order to improve their detection capabilities. Therefore, when the input device, that is, the image sensor section is held in hand and placed on the data surface and a sweep is started, the sensor section moves even when the operator intends to keep it stationary. ■The detection device has high resolution accuracy. There is a problem in that the data reading operation is started and unnecessary data is input.

<Purpose of the Invention> The present invention has been made to address these conventional problems, and it is possible to input read data only when the amount of movement 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 resolving the problem> In order to achieve the above object, the image input device of the present invention outputs a detection pulse to an image sensor unit that manually sweeps the 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 four-write control section that outputs a command signal, and a memory that captures and stores data read by the data reading section by outputting a write command signal from the write control section.

Effect> When the image sensor unit is held in hand and aligned with the data reading start position on the data surface, if the image sensor unit moves even slightly, the movement amount detection unit detects this and outputs a detection pulse. , since this detection pulse is not output continuously, the counter that counts it
Since the number does not reach the set number and the write control section does not output a write command signal, unnecessary data read by the data reading section is not stored in the 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 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. ing.

As illustrated in FIG.
3a is attached in a state where it is exposed slightly below the main body case 1a, and as the sensor section 1 moves, the detection boo 'J3a rolls onto the data surface.

The rotation of the detection pulley 3a is transmitted to the transmission pulley 3c by a bell) 3b, and the transmission pulley 3c has 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. are fixed coaxially so that they rotate together. The rotation detection plate 3d also includes a photo ink club 3e that detects the slit and outputs a detection signal.
are arranged opposite each other, and the pinch of the slit is made small to set high 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 the waveform shaping circuit 5, and this detection pulse signal is input to the reset terminal R of the integration circuit 6. The integrating circuit 6 inputs and integrates the clock pulses of a constant pitch output from the pulse generator 7 from the input terminal 2, and when the integrated value exceeds a certain value, it outputs a signal to the reset terminal R of the counter 8. Outputs a seven-node signal. Also,
The reset terminal output from the integrating circuit 6 is connected to the delay circuit 9.
After a certain delay time has elapsed, the signal is again input to the reset terminal R of the integrating circuit 6. The counter 8 is a waveform shaping circuit 5
Detection pulses outputted from the controller are taken in from the count input terminal I, counted, and a count signal is output to the write control section 10 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. 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 boo IJ of part 3
3 a rotates, and the rotation detection plate 3 rotates together with this.
A detection signal is output from the photo ink clubter 3e through the slit d, which is converted into a detection pulse signal by the waveform shaping circuit 5, and the integration circuit 6 is reset each time this detection pulse signal is output.

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 integration circuit 6 is reset by this detection pulse signal, it will not be reset by the next detection pulse signal. During this period, the integral value of the integrating circuit 6 that integrates the output clock pulse of the pulse generator 7 becomes a certain value or more, and the counter 8 and the memory 14 are reset by the reset signal output from the integrating circuit 6, and the delay time is After the elapse of time, the integrating circuit 6 itself is reset. 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 data reading section 4
The data read from the light receiving section 4b is sent to the central processing unit 12.
It is prevented from being stored in the memory 14. That is, after the integration circuit 6 is reset by the detection pulse signal, unless the integration circuit 6 is reset by the detection pulse signal during the time until the integral value of the integration circuit 6 reaches a predetermined value, the integration circuit 6 will intermittently A reset signal is output to the counter 8, 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.

Then, when a manual sweep 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 generation interval of the detection pulse signal is determined by the integral The time required for the integral value to reach a certain value in the circuit 6 becomes shorter than that, and the reset signal is not output from the integrating circuit 6. As a result, it is detected that the moving speed of the image sensor section 1 has reached a certain value or higher. There is.

When the reset signal is no longer output from the integrating circuit 6 in this way, the counter 8 continues to count the detected pulse signals because it is not reset. A write command signal is output, 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. This prevents reading data from being stored in the memory 14 when the movement state and angle of the image sensor unit 1 are not stable from the start of movement until the image sensor unit 1 reaches a certain distance.

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 timer circuit 18 and the set terminal S of the write system '<Tl1 section 19, which consists of a flip-flop. 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 cent terminal S puts it in the cent state, and outputs a write command signal to the memory 14 consisting of a RAM. Further, the timer circuit 18 is reset by inputting the output signal of the counter 16 to the reset terminal R, and also outputs a reset signal to the reset terminal R of the counter 16 by counting a certain timer time, and also resets itself. A reset signal is also input to the terminal R, and the reset state is again established.

Therefore, in the state immediately before the manual sweeping operation of the image sensor unit 1 is started, the detection pulse signal from the movement amount detection unit 3 is intermittently output, so that the counter 16 that counts this detection pulse signal is Before the count reaches "2", the counter 16 is reset by the reset signal output from the timer circuit 18 as the timer time of one day has elapsed, and the counter 16 outputs the count number "2". '', no signal is output and the write control section 19 maintains the reset state, so the data read from the light receiving section 4b is not written into the memory 14.

Then, when the manual sweep operation of the image sensor section 1 is started, the detection pulse signal is continuously output from the movement amount detection section 3, so that the count number of the counter 16 is outputted from the timer circuit 18 as a reset signal. The value has previously reached "2", and at the same time the write control unit 19 enters the cent state due to the output signal of the counter 16, a data read start signal is also input to the central processing unit 17. A write command signal output from the write control section 19 in the set state puts the memory 14 into a writable state, and the light receiving section 4b
The read data is taken in and sequentially stored at a predetermined address. In this embodiment as well, by setting the input of two pulses to the counter 16 within the timer time of the timer 18, a period of time during which reading data is prohibited is provided, so that a slight movement of the image sensor unit 1 immediately before the manual sweep is performed. It is possible to prevent unnecessary read data from being stored in the memory 14 both at the time of the manual sweep and immediately after the manual sweep when the moving state is not stable.

<Effects of the Invention> As described in detail 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 count of this counter is The configuration is such that when the value reaches the set value, a write command signal is output and the read data is captured and recorded in the memory. Prevents unnecessary reading data from being stored in memory due to slight movements of the sensor section when placed at the reading start position, and when the image sensor section is moved a certain distance until the movement state and angle are stabilized. be able to.

[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 8.16... Counter 1019... Write control section 14... Memory patent applicant Sharp Corporation Agent
Patent Attorney Nishi 1) New Figure 2 Figure 4 j-=--1

Claims (1)

[Claims] (1) An image sensor unit that manually sweeps the data plane, and a movement amount detection unit that outputs a detection pulse as the sensor unit moves, and a data reader that optically reads data on the data plane when the detection pulse is output. means for counting the detection pulses; a write control section that outputs a write command signal when the count of the counting means reaches a set value; An image input processing device comprising: a memory for capturing and storing data read by a data reading section.