TW199218B - Handy scanner's picture quality control method - Google Patents

Abstract

One method for detecting the lost lines of handy scanner, which includes -photo interrupt counter -step trigger counter When comparing the results of the above two counter, the system will know that there are lost lines if they are not the same.

Description

199218 Λ6β V. Description of the invention () 10 15 The cooperation between Dubu and the Central Bureau of Industry and Commerce permits the du printing 20. The present invention is related to a scanning quality control method and its device. The scanner can detect the scanning image quality control method and device of the palm-type scanner for correction and compensation in order to correct errors in the scanning process. According to the press, the role of handheld scanners in the trend of office automation is becoming increasingly important. With the support of text recognition, image processing, scan editing and other software, the scanner has become the best tool for computers to process images and text data. At the same time, I advance the manufacturing technology and low price. The device will be as standard as m · _-, and it will become the standard equipment of the personal brain. The palm-type scanner pseudo-one circle or text image on the document, i thulium is replaced by the photoelectricity, and becomes an input tool for digital signals The device usually includes a scanner engine operated by hand and an interface card connected to the host computer. Among them, the operation actions of the scanner are divided into horizontal scanning and vertical scanning. The charge-coupling device (CCD) detects the reflected light intensity of the scanner projected on the image, converts it into # electrical signal, and passes it to the computer host through the interface card, and the application processes the obtained. The image is shaken and placed In the computer's display memory area, you can get the reproduction of the scanning line on the computer screen. If you want to get a two-dimensional image, you only need to move the scanner in the vertical direction. Multiple horizontal scanning lines can be obtained, and the combination of the multiple scanning lines becomes a two-dimensional image, which is vertical scanning. All in all, the working principle of the scanned image of the palm-type scanner is horizontally the internal light mechanism of the machine and the vertical direction is caused by the user moving the scanner

Read first * Note on the back-Matter il V Binding private paper% 爋 度 運用 Zhongjiashe standard (CKS) f4 specifications (21 81. 4. 10,000 sheets (H) 199218 A 6 Η 6 V. Description of invention () 15 The Shiyang Standard Bureau of the Ministry of Economic Affairs β 工 消 # Cooperative Society Printed 31 20 _ is inherently uncertain in manual operation. In order to overcome this shortcoming, the vertical scanning of the palm scanner is supplemented by a roller mechanism, which drives a The iris wheel, the width of the iris input is usually designed to be equidistant, and placed in an optical interrupter. When the scanner moves, the roller drives the transmission gear transmission group, which in turn links the iris wheel. The optical interrupter is affected by the iris wheel. The shielding when rotating, so there is the output of high and low potential signals. Through the design of this mechanism, the instability caused by hand operation can be minimized. Even if the speed of the scanner is uneven, we can still check The voltage output of the photometric interrupter, its high and low potential changes, represent a new horizontal scanning line, and each scanning line corresponds to an equidistant vertical displacement. Due to the conversion of light into a charge array, it must be sequenced in the CCD Ground moved The horizontal scanning has its shortest time limit. This is because when the charge detected by the previous scanning line is still in the CCD and it has not been removed, the new scanning cycle begins again, which will cause the upper and lower scanning lines to During the day, the imagery is distorted. I call it the “integration time” when all the charge elements in the CCD are removed. When designing the handheld scanner, to prevent 1L. The integration time is often used as a cycle to synchronize the high and low potential signals detected by the optical interrupter. When the time change time of the high and low potentials of the two adjacent optical interrupters is less than the integration time, one of the high and low potential changes Event # is ignored, this design will have a consequence that when the scanner moves faster than a certain speed, it will cause the scan image to be out of line. The actual experience of operating the handheld scanner is found, although During operation, the speed of moving the scanner is lower than a certain speed, but due to the uneven speed when moving by hand, the instantaneous speed at a certain moment may still be Please read the notes on the contrary Sun% Ben M 81. 4. 10,000 sheets (Η) 199218 A 6 It 6 V. Description of the invention () 15 Printed by the Central Consortium Bureau of the Ministry of Economic Affairs of the Beigong Consumer Cooperative 20 After exceeding the speed limit The line loss occurs. Another reason for the line loss caused by scanning is in the design of the interface card. The design of the traditional interface card, in order to solve the problem of the mismatch between the scanner input and the data reading speed of the host, usually A data flusher is added to temporarily store the scan data because the host is busy with the services of other devices on the system, and there is no time to read in time. When the load of the system is too heavy, the host may be too late to read the data on the interface card The data in the buffer causes saturation of the data in the data buffer. At this time, the scan data of the subsequent performance will be discarded due to the provision of temporary storage space, and it will also become a lost line of the scan. In the above two cases, because of the actual problems that are not considered in the design, the scan is lost and the quality of the scan is affected. In view of this, Φ invites people to continue to improve and break through this technology over the years, hoping to make use of a more complete design to make up for the problem of losing the line of conventional scanners, and to gain greater trust from consumers Based on this concept, in the spirit of excellence, innovation and breakthrough, the inventor has accumulated many years of experience in design and manufacturing, and finally developed a new invention of a palm scanner scanning quality control method and device. That is, the main object of the present invention is to provide a scanning image quality control method and device for a palm-type scanner, which can provide a detection capability for a line-out situation during scanning, so that the application can be in or out of tracing Afterwards, according to the location and number of missing lines, the missing scanning lines are compensated through the mathematical lotus calculation, thereby greatly improving the scanning effect. In order to achieve the purpose of the invention, the palm-type scanner of the present invention scans the daytime quality control method and its device. Its main feature is that it pseudo-counts the high and low potential signals generated by an optical interrupter, and synchronizes the counting result with After the light is inserted first «1 read. Note to the contrary-matters fill l · η gutter

Private paper ruler Tiger Road uses China's "Home" standard (CKS) A 4 specifications (210X297S 81. 4. Ιό, ΟΟΟΛ (Η) 199218 Λ 6 Η 6 V. Description of the invention (15 Ministry of Economics + Central Industry Bureau The consumer cooperative printed a 20-breaker signal count value for comparison. If there is a difference, it indicates that a line loss situation has occurred. With an application, during the scanning process or after completion, the line loss position and number are corrected to achieve The purpose of scanning image quality control 0 Other objectives, advantages and special features of the present invention can be circled as follows, and the detailed description of the preferred embodiment can be further understood. The first figure is the signal of a pseudo-traditional scanner Timing waveform diagram. The second figure is a circuit block diagram of the first embodiment of the scanning honey quality control method and device of the palm scanner of the present invention. The europium three figures are pseudo scanning quality control method and device of the palm scanner of the present invention. The circuit block diagram of the second embodiment. The fourth figure is a signal timing waveform diagram of the scanning image quality control method and device of the palm scanner of the present invention. First, the quality control of the palm scanner of the present invention is scanned as much as possible. Method: Explanation: We must first count the signals of the high and low potential changes of the output of the optical interrupter, and detect whether the internal space of the data register is full, as a reference to determine whether to perform the sub-scan synchronization signal Count, and then compare the results of the above two counts. If It is different from the result, it indicates that there is a line loss. Use an application software, or perform line compensation in real time, or record the position of the line loss. After the scan is completed, all The missing line is compensated for the purpose of scanning quality control. The upper inter-scan step signal M is the signal of the synchronized optical interrupter, abbreviated as ST (step trigger), and an AR signal ( a.tss reset), which represents the starting point of the horizontal scan, there can be several times between the two ST pulses before reading the back ift note-matters write π

This paper is Λ scale Λ1. ^ # ^ (CHS) T4ift «K210X297 ^ i! TV 81. 4_ 10,000 sheets (Η) 199218 Λ 6 Π 6 V. Description of invention () 15 Ministry of Economics, Ministry of Economic Affairs Consumer #Cooperative printed 20 scan cycles, but each scan cycle is aligned to the same line on the image. The scan interface only intercepts the data obtained from the first value cycle, and discards the rest, covering these data with the first week. The scanned data is the same. In this case, the scanner movement speed is lower than the maximum speed limit, and no line loss will occur. In contrast, between two AR pulse waves, there are more than two high and low potential changes between the optical interrupters, and only one of them can be synchronized at the integration time to send out-tilt ST signal to notify the media The card starts with a new scanning line. In this situation, more than one optical interrupter signal is ignored, that is, the scanner shifts several lines in the vertical direction, and only one scanning line is sent out. As the speed of the scanner moving above the maximum speed limit, Dicheng lost the line. Even though there is only a cupboard of ST pulses between the two AR pulses, but the data register is full, it cannot accommodate the scanned image data from the CCD, and the line shape will also appear. See the first figure. The signal timing waveform diagram of Fu Tong ’s scanner, where να pseudo represents the image signal, when there is more than one optical interrupter pulse wave between the two tuna AI? Pulse waves, as shown in the first picture, pulse waves 1, 3, only A synchronous ST signal 5 can be obtained, which will not reflect the loss of line status after completion. Please refer to the second figure again, the circuit block diagram of the first embodiment of the palm-type scanning image quality control method and device of the present invention. The control device 1 mainly includes: an optical interrupter signal counter 11 (phQtc .Interrupt counter; PIC)., a scanning line counter 12 (scanning line counter; SLC for short), a comparator 13, a multiplexing device 14, a memory device 15, a lost line counter 16 (lost line counter ; Jian Zuoshan 〇: item-ih- first 3ft. Note to the contrary-matters 塡 本 A Η binding line ΜΛΛ standard and + «B 家« quasi (CKS) IM specifications (210X297 public Λ) 81. 4. 10,000 sheets (Η) 199218 H6 V. Description of the invention () Ministry of Economic Affairs, Bureau of Economics, Bizhong, Employee Consumers, #Cooperative Du Printing 1 LLC), a data flip-flop 17 and an interrupt processing device 18. The input signal of the PIC U mentioned above is the output of the optical interrupter. Because the output is a high and low potential fee, E can count the number of changes. The count result represents the distance the scanner travels straight back; and The above SLC 12 5 has two input signals, one is the sub-scan synchronization signal ST, and the other is the enable signal FULL sent by the data buffer on the ffi card, under normal conditions, the optical interrupter signal counts As a result, the count value in PIC 11 will be equal to the count value in SLC 12; however, between the two AR pulse waves, there will be changes in the high and low potentials between the two chests between the optical interrupters. One 10 can send an ST signal during the integration time, resulting in the count value in PIC 11 is greater than the count value in SLC 12, which means that there is a line loss situation, or the interface card data memory has been Then, the FULL signal will turn to a high level, which will stop the SLC 12 from counting, and also cause the value of PIC 11 to be greater than SLC 12, which also represents the occurrence of line loss. 15 Make comparator 13 act 1 The trigger signal is ST, the comparison result If the value of PIC 11 and the value of SLC 12 are equal, it means that there is no line loss in the scan, if it is not f, etc., it means that the line is lost, the comparator 13 will output A signal indicating lost line. The lost signal side is sent to the interrupt processing device 19 through the data flip-flop 18, depending on whether the interruption of scanning lost line is enabled, if it is enabled, it can be 20 in the center After the processing unit finishes the interrupt with higher priority, it will directly deal with the occurrence of the missing line. The host can cooperate with an application to automatically wedge the missing scanning line. If the scanning lost line interrupt is not set, the above comparator can be used The lost signal output by 13 is sent to the multiplexer 14 above, so that the values in the PIC 11 and SLC 12 are recorded in the above notes by the multiplexer 14 and read first. Note on the back-matters written by Sun八-本 产 > πinstalled • Lamp line paper "The standard is used in the" Musaka "quasi (CHS) T4 regulation (210X297 81. 4. 10,000» (Η) 199218 Λ 6 Η 6 Central Bureau of Economic Affairs of the Ministry of Economic Affairs Printed by SC Industry and Consumer Cooperatives 31 V. Description of invention () 100 million devices 15 In the meantime, the difference between the value of PIC 11 and the value of SLC 12 represents the number of lost lines. At the same time, the content value of the lost line counter 16 is increased by one. The lost line counter 16 is the content of the lost line counter 16 every time The value is accumulated by 1. After the recording is completed, the value of PI C 11 is loaded into SLC 12, so that the contents of the two 5 counters are equal to two degrees, and the detection of line loss is continued. When the scanning process is over, the CPU f praises The value of the lost line counter 16 is used to determine whether there are lost lines and several lost lines, and the value is distributed to the recording device 15 to read the corresponding data and obtain the lost line. The host can According to the capabilities of its application, the user is notified to rescan or automatically miss the 10 lines to be missed and become a scanty system. In order to comply with the requirements of the standard interface of the handheld scanner to transmit signals, the present invention has another- Please refer to the third figure for the two methods of applying, the circuit block diagram of the second embodiment of the scanning honey quality control method and device of the palm scanner of the present invention. The difference between the second embodiment valve and the first embodiment is The above light 15 interpolator signal and The interface's output signal, so in addition to still outputting the signal to the optical interrupter, a counter 21 is used to count, and the above-mentioned count value is shifted through a parallel rotation rate shift register (P ara 11 e 1 t 〇 seria 1 shift register; abbreviated as PSR) 22, output to a multiplexer 23 in the form of serial data, the multiplexer 23 is input twice, one is image data / the other is 20 CONTROL signal, please cooperate Refer to the fourth figure, which is the signal timing waveform diagram of the scanning quality control method and device of the palm scanner of the present invention. When the sub-scan synchronization signal ST occurs, the CONTROL signal will turn to a low potential, causing the PSR 22 to operate, and Make the multiplexer 23 connect the channel to the output of the PSR 22, when the horizontal synchronization signal AR occurs, the C0.NT R0 L signal will return to high (please read the back and the precautions before you know this page) Private paper Λ scale use + home sample rate (CNS) T4 specifications (210χ 297 ^^ Λ 3 Π _81.4.10,000 sheets (11) 199218 Λ 6 It 6 V. Description of invention () 15 Shiyang Central Bureau of Standards A Industrial Consumer Cooperative printed the potential, so that the channel of the multiplexer 23 was switched to the image data The input terminal, such as the signal h in the fourth image, is pseudo image data with a number. After each scan line is numbered, the number is placed at the front of the image data. The number is marked on the ST pulse and AR Between pulses, usually 16 bits, and between AR and the next ST is image data. The above-mentioned Vd signal is the standard interface transmission signal. The \ ^ signal will be sent to the interface card located in the expansion slot of the host through a scanner transmission line. The Vd also inputs a serial to parallel displacement register (serial to parallel shift register; abbreviated as SPR) 24 and one-bit counter 25, when the sub-scanning step signal ST occurs, the SPR 24 and the bit counter 25 ?: Move, edit the above 16-bit scan line The signal is collected and output in a parallel manner and sent to a buffer 26. At this time, the bit counter 25 will count the 16-bit numbered signal until the 16-bit transmission is completed. Then output a signal to start a tb comparator 27. The comparator 27 will compare the contents of the upper SLC and the buffer 26. When the comparison result is different and the table loss occurs, the processing method is the same as The above f is the same, so I won't make another ride here. The task is that the scanning quality control method and device of the palm-type scanner of the present invention can indeed expose the dew, and achieve the following advantages: 1. Quickly and accurately detect the number and position of lost lines. 2. For the position of the above-mentioned missing line, according to the number of missing lines, borrow the line to make the scanning more perfect. In summary, the scanning image quality control method and device of the palm-type scanner of the present invention can indeed achieve the object of the present invention by dew exposure.

Read in advance · Contrary note & fill in 3¾ ^ ig.- This A binding line k paper size is not used t home «quasi (CHS) A 4 *« K210X297IW) 0 ^ 81. 4. 10,000 sheets (H) Λ 6 η 6

1893.1A Fifth, the description of the invention () meets the requirements of the invention patent, and has the same structural design for public use. It also meets the requirements of the new patent, utility and progress of the invention patent, and at the same time makes the implementation of the scanner More complete, he filed an invention patent application according to law. However, the above-mentioned disclosures and descriptions are only preferred embodiments of the present invention. Anyone who is familiar with this technology will still have the modifications or equivalent changes made in accordance with the spirit of this case, including the application of this case. Within range. tk- Read it first. 背 之 it- 意-事 # Write, this, page 10 15 Binding Line Ministry of Economic Affairs Central Bureau of Justice cs: industrial consumer cooperation cooperation Du Yin 51 ο 2 this paper ”彳 彳 1 using Chinese national salamander Standard (CNS) Ή specifications (210x297 ^ itn members 81. 4. 10,000 sheets (H)

Claims (1)

On 99218 A7 B7 C7 D7 Sixth, apply for 4 profit scopes 1 1 · A palm-type scanner to scan for loss of quality line detection method, which includes the following first · K1 Please back d & : Count the high and low potentials of the output of the optical interrupter; then count the step signal between the sub-scans; and, 5 Compare the count value with the high and low potentials of the output of the optical interrupter. Compare, if different, it indicates that there is a line loss occur. 2. As described in Section 1. of the Fanyuan, the palm-type scanner scans out of line detection method. In order to cooperate with the scanner's standard interface to transmit signals, it also includes the following steps:! 〇 The high and low potential counting results from the device_ are sequentially used as the scan line number; a, if the scan line number has a jump number, it means that the line is missing. 3. The palm-type scanner scan-out-of-line loss detection method as described in item 1. or 2. of the application scope, which further includes the following steps: 15 If a line loss occurs / the number of lines lost and the location of the line loss Make a record, once the scan is complete, cooperate with an application program, and perform image simulation to fill the line in the missing line part. _ s 4. The palm scanner as described in the application example _ item 1. or 2. scans out of quality. The Ministry of Economy Standards Bureau ®: Industrial Consumers Cooperative Cooperative Printed Line Detection Method, which further includes the following steps : 1 2 〇 If there is a loss of line, the interruption part of the central processing unit is enabled, and the image simulation line is immediately repaired. '5. — A palm-type scanner scan quality control device, which basically includes the first counting device, which is mainly used to fuse the signal from the optical interrupter, and counts it. (CNS) T4 specification (210x297mm) 199218 Α7 Β7 C7 D7 -u Central Ministry of Economics, Central Purchasing Agency BeiH Consumer Cooperative Printing Class, Patent Application Fan Circle Number; ~ Second counting device, receiving sub-scanning synchronization signal ST and interface The card data processor sends one of the enable signals to determine that the data storage is full. When the data buffer is full, the ST signal is counted;-the comparator uses the ST pulse signal as the enable signal. Compare the counting results of the first counting device and the second counting device. If they are not the same, output a signal indicating line loss; and, an interrupt processing device receives the signal indicating the line loss output by the comparator, and Notify the CPU to request an interrupt to handle a lost line. 6. The palm-type scanner scanning quality control device as described in item 5 of the patent application scope, which further includes: 15 (please read the precautions on the back before filling in this page) —multiplexing device, some departments accept The signal output by the comparator indicates a line loss, and starts to work. When receiving the counting result output by the first counting device and the second counting device, the channels are connected to them in order; \ —memory device, which Pseudo-multiplexing device starts to work, and then receives the output of the multiplexing device, counting the count value in the first counting device and the second counting device, the output of the billion counting device is connected to the bus bar; And, the V lost line counter receives the output of the above billion-counting device to record the number of lost lines .; After the above-mentioned billion count device and the lost-line counter are recorded, the value of the counting device will be loaded into the second counting device, Make the count value in the counting device equal again, and the mine will detect Zhu «Scan page 13 of this paper. The paper degree is applicable to China National Standards (CNS) A 4 specifications (210x297; jt) 4199218 A7 B7 C7 D7 Six Zhongfan Patent Fan Garden 15 Printed by Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs 20 After the process is completed, the CPU will read the value of the lost-line counter, based on which it is determined that there are missing lines and several missing lines, and according to Read the value to the 100 million device, fetch the corresponding data, and get the location of the missing line. The host can notify the user to rescan or automatically wedge the missing scanning line according to the ability of its application program Quality control. 『Palm type scanner # description quality control device as described in item 5 or 6 of the patent application scope, in order to cooperate with the standard interface of the scanner to transmit signals, wherein the first counting device pseudo includes: an optical interrupter Signal counter, pseudo counting the output signal of the optical interrupter; a parallel conversion serial displacement register, pseudo-pulling the counting result of the above counter, and changing it to output in a serial manner; a multiplexer, its pseudo Receiving the serial output count signal, an image data and a control signal of the above-mentioned parallel-to-serial shift register, the control signal enables the multiplexer to connect the channel upward when the sub-scanning step back signal ST pulse is generated鈑 平 ^ Convert the output of the serial displacement register, and when the AR pulse of the horizontal scanning signal is generated, the channel is connected to the image data input, so that the multiplexer outputs a numbered image signal; a string The serial-to-parallel shift register receives the image signal with the number output from the multiplexer, input it to the ST pulse wave, and activates the serial parallel shift register to capture the serial number attached to the image signal , Changed to side by side The signal output, and at the AR pulse signal input device, the tandem parallel displacement register is closed until the next ST urea wave signal is input before it is restarted; a one-bit counter, which is basically a ring counter ， It also accepts the 14th page of the paper》 Standard Universal BH Family Tree Rate (CNS) A 4 specifications (210X297 mm) yuan · Read the notes on back Λ. Refill '% This page is installed with thread 19921 »AB c D 六、 Patent application Fan® The image signal with number output from the above multiplexer, after ST pulse input, start the bit counter, depending on the number of bits occupied by the number, when the count value of the bit counter reaches this bit When the number of epochs, the bit counter will output a start signal, and after the AR pulse signal is input, the bit counter is turned off, 'a ST ST pulse signal input will be started again; and a buffer for serial transfer The trigger signal output by the parallel shift register output in parallel with the output of the bit device will be sent to the comparator, and the output of the buffer will also be sent to the comparator, the other input of the tb comparator, Weng for Ii. The count output of the second counting device. When the comparator receives the start signal, it compares the input values of the buffer and the second counting device. If they are not the same, it indicates that a line loss has occurred. Please first · K1 Please memorize it-Note l · Then fill in the manuscript Τι Install 15 dozens Printed by the Ministry of Economic Affairs, Pyongyang Bureau of Beigong Consumer Cooperatives ο 2 pages 5 1Λ The size of this paper is applicable to "« 家 flMMCNS) ^ Specifications (210X297 公 #)