TW548951B - Selective compress capacity for scanner - Google Patents

Abstract

A selective compress capacity for scanner is used to increase scanning speed. Accordance with the present invention, the method for selective compress capacity comprises the following steps: detecting decompress rate of central process unit; determining to enable the compress capacity according to the decompress rate; scanning an original; generating an image data. The key point of the present invention is adjusting the corresponding compress capacity to decompress rate of CPU. Then decrease data quantity to speed up the rate of data transmission.

Description

548951 V. Description of the invention (1) 5 -1 Field of the invention: The present invention relates to a method for improving the scanning speed of an image, and in particular to a judgment about the decompression capability of the central processing unit of the host computer to determine whether to compress the image data. Method and scanning system to reduce the amount of transmitted data and improve the overall scanning speed. 5-2 Background of the Invention: In recent years, in the era of the technology emergency mode, the image processing and analysis of the optical processing system has been widely used. Various types of multimedia resources including image processing have been used, including other image tunable effects. ” The phoenix's < / introduced poverty, rapid development, scientific and technological progress has made the text mode of communication or reception 2j turned into a so-called image theory. , Images, etc. are produced by the needs of various types of scanners, & image systems, especially because of optical engineering! Real machine, digital camera or its degree, image stability. Scanner technology is increasingly mature, and it is simple and easy. The superiority L is not affected by the light source and the external environment. ·····, have been widely used in general personal computers for images such as, logarithmic photos stored in light-bit movies, video images, scan data films, or serializers. Ancient, & installation i. A kind of device that converts a flat or printed image into a digital electronic imaging device.

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548951 V. Description of the invention (2) It is a plane-horizontal axis direction, and the belt is moved to make the final image on a computer display, reflected light Array). Therefore, from the general time to the scanner's time, the image is often placed on a computer screen and moved with the vertical axis of the image sensor. The scanner line passes through the lens and the detector scans the optical primitives (Photocel's scanning system converted by signal amplification to electrical signals. The scanning result takes about a few seconds to scan the image in the scanning window. The scan memory is collected during the scan. Turn to light image information. 1) Follow the steps to remove the clutter. Enter a piece of image data and return it to the platform for more than ten seconds. 'Use the scanner to scan and then send a strong optical sensor to the telecommunications. After the image from the computer is transmitted to the host, the image is driven from the original drive motor and the image is displayed on the original (the CCD number 'optical light intensity output is analog / digital digital signal.), The display is opened from the scan , Water ΓΓ: The scanner's resolution can be divided into two types: horizontal and vertical. The scanning direction is the optical resolution (0ptical Resolution), which refers to the light d. Tian Wei's image sensing device can capture every inch. The number of image points is in ^ P1a (drs.per Uch). The vertical direction refers to mechanical resolution. It means to drive the two motors of the image sensing device. Per inch on the structural design of the movable step. After a complete k-line scan of the first horizontal line of the original by the sensing element, the stepping motor drives the sensing element to scan the second horizontal line, and the entire image is scanned. Until 548951

Page 7 548951 V. Description of the invention (4) In view of the above-mentioned invention background, the data transmission method will be scanned due to the required method and the disadvantages of the speed reduction in the scanning system and the above-mentioned ^ flat = too large amount of material, resulting in scanning. Selectively determine whether to perform the compression function: Describe the need-a new type of traditional scanning method that can be issued by optical scanners; =; improve the operating characteristics that can also achieve the purpose of saving overall scanning time and speed, 5-3 invention objectives And the summary: / The purpose of the present invention is to provide a way to improve the scanning speed. ^ The key point of the present invention is to reduce the shrinking power of the central processing field (ssing Unit; cpu) corresponding to the host computer. 'In order to reduce the amount of data to be transmitted and speed up scanning, one of the main objectives of the present invention is to provide an image scanning force' to determine whether to compress the image data, and to know the method and scanning system of scanning speed. i The other main purpose of Mingming is to provide the scanner with a test chart 4 of the same format as the scan image to test: the time required for decompression to determine whether to perform the compression function. Early

Page 8 548951 V. Description of the invention (5) According to the purpose described in >, the present invention is one of the > scanner's M selective compression function, in order to describe; system. The present invention mainly provides a method of scanning speed and the shortcomings of a predetermined scanning mode of a scanning scanner. Tian Er f can be used to improve the ability of traditional light shrinkage to determine whether to perform pressure = j on 4 computer hosts. If the speed is fast enough, then the image 4 will be decompressed and restored after the host at the central processing unit, so that the redundant data will be transferred to the reduced transmission to be improved. After decompressing the image, it takes more time: the processing speed is faster than t man, and the compression and scaling function is transmitted to the host, so it is targeted. Elephant data does not pass through. The method of the present invention is further: Γ: the step of passing the entire data to the host through the towel surface. "Transmission" surface, transmitting the 5-4 invention from the scanning system. Detailed description: The direction of the invention discussed here is a function. The preferred embodiment of the invention will be described in detail 2 =: he: real :: can also It is widely implemented; its target range of the present invention is not limited, and the range of profit is subject to limitation. // The following is a simplified block diagram of the system of an embodiment of the present invention with reference to the first figure below. Which contains at least scan / descriptive system 12, the interface of the wheel

Page 9 548951 V. Description of the invention (6) 24 and computer host side 26. The scanning system 12 includes at least a signal processing device 14 ′, a sensing device (sen s), an analog / digital conversion device (a d C) 18, a data memory buffer device 20, and a drive motor 22. The scanning system 12 is used to scan the original image to generate digital image data. The signal processing device 14 is a control device unit that converts a flat image into digital image data. The control unit includes a special application integrated circuit (

Application Specific Integrated Circuit). A sensing device 16 (sensor), such as a charge-coupled element CCD (Charge Coupled Dev ^ c ^), and an optical sensor (CCD Array) converts optical image information into electricity L τί Tiger, a camera element in the CCD ( ph〇t〇ce 丨 1) output analog data of different voltage values according to different reflected light intensities. Analog / digital conversion device (18 iArLa2tDigitai converter) converts the analog image data into a digital shirt, = 枓, which can be input to a computer's digital signal for image analysis and calculation. I 22! The material memory buffer device 20 is a body 11 for storing digital image data. The driving motor 22 is used to drive the belt to move in the longitudinal direction to perform the image: the scanning process is performed by the optical sensing device 16 and the scanning device 16 after the first line '# the driving image is driven by the driving motor 22 and the scanning is completed. The data is repeated all the way to the entire machine end; the transmission interface 24 is used for data transmission between the data generator and the main end 26. The scanning system 12 and the host computer in this embodiment are used to transmit data. The transmission interface 24 can be any commercial product of the communication protocol version 1.1 (usb) If rate, such as the universal serial bus •) ’universal serial bus version 2.0 (USB2 · 〇), a new computer

548951 V. Invention description (7) type industry standard bus (IEEE1 3 94), enhanced, small computer system interface transmission interface (SCSi), serial port (EPp), host side 26 is for inputting digital signal data: limited to this. Computing or image output requirements. The shame for image analysis = the second picture is a system flowchart of a specific implementation of the present invention. The method flow of the present invention is connected to the host computer side of the step image scanning and inserting method, and the scanner driver sends out the first one. When the test images of the same scanner format are used to test any of the same as the scanner compression processing unit decompression The central processing unit of the central host of the computer mainframe required for the test image is to resolve this test image: assuming that the computer assumes that the design value of this system is T and the value of τ is the same == time is t, and The difference between the time required for transmission and the compressed image data and the uncompressed image data, the value of which is the maximum time required for the system to allow solution 2 to determine the value of t value and T value, heart = Reduce the time, and then enter the central processing unit of the two-brain host. The value of "4 t values is less than the system design value τ," that is, decompressed to the computer host, and then compressed and transmitted through the computer host. The time required for data decompression is more directly transmitted. 疋 Lose the time for this compression, then start the system pressure ::: == speed by name, if the decompression time t value is greater than the system j The value T 'means the image The material is compressed and transmitted to the host computer, and then == the central processing unit decompresses the compressed data. It takes a long time for b to directly transmit the uncompressed image data. Page 11 548951 Five description of the invention ( 8) The scanning speed is slower than when it is not compressed. 1 The scanning system's compression function, such as the fourth step 36 in the second picture, and then proceed to step 38 to start the scanning of this image. The advantages and steps of the present invention allow users to select an appropriate compression function before scanning an image to increase the overall scanning speed of the image. For this 'Full Speed' transmission, the compression ratio is known as the 3Mb compression, and the data volume will be faster for the central processing unit. If the compression of this 3Mb is slowed down, it is not suitable for the time difference of the image data transmission ’The compression function that the system can allow for the trial image decompression. For example, suppose that the actual full-speed transmission speed of the USB transmission interface is about 12 M b per second. Now a 12 μ b of 4 is compressed into 3 Mb compressed data, so ^ data 'takes 0 · 25 seconds Time transmission, if the data is not compressed 1 2Mb, it takes one second to transmit. Therefore, if the decompression is completed in less than 0.75 seconds, the whole scan will be performed. However, if the central processing unit cannot decompress the lean materials in less than 0.75 seconds, the compression function will be enabled to make the overall scan speed deplete the lean compression function. Therefore, according to the time required for this uncompressed image and the transmission of compressed image data, the design value of this system is designed to be 0.75 seconds, and its value is the maximum decompression time. Compare with time, and then judge whether the system is implemented—the above is only a specific embodiment of the present invention, and is not intended to limit the scope of the patent application; all others that have not deviated from the spirit disclosed by the present invention Equivalent changes or modifications should be included in the scope of patent application described below.

Page 548951 The drawings briefly explain the above-mentioned objects, features, and advantages of the present invention, which can be fully understood from the detailed description of the foregoing embodiments and the related descriptions of the accompanying drawings, wherein: The first diagram is based on a specific embodiment of the present invention A simplified block diagram of an image scanning system; and the second figure is a flowchart of an image scanning method according to a specific embodiment of the present invention. Main symbols: 12 scanning system 14 signal processing device 16 sensing device 18 analog / digital conversion device 20 data memory buffer device 2 2 drive motor 24 transmission interface 26 computer host side

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Claims (1)

548951 w ： Amendment —— 1 ^ 90129004_year… · Sixth, patent application scope 1 · An image scanning system includes: a sensing device for scanning a document; the position conversion device is connected to the The sensing device is used to convert " _ ^ two analog analog signals into digital signals; and processing: ΪThe processing device is connected to the analog, and the digital conversion device is the signal output by the host end bit conversion device. And test the computer's "iron time, and judge whether to perform image data compression. 2) For example, the shadow of the patent application scope of the first item> 2 / Memory device in the body device: f 糸 系 'more contains-memory bit Image data. Horse and bite memory, used to store the number of shadow times # motors in the scope of patent application # 1, which is connected to the sensing device, and the imaging system also includes a driving measuring device. Drive a belt to bring a sense of motion 4 由 • ° A Patent claim 1 of the shadow 2 clothing set is to transfer optical image information :: tracing ”: where the above feeling: 'The device receives from the scanning plane back Pass on Gu Guxin? Tiger ’s use optical to produce analog data of different voltage values. , Quan ’according to different light intensity input / digital conversion device is analogy to shadow Jun! Scanning system ’where the above-mentioned image data is converted into digital image data For example, the shadow of item 1 of the scope of patent application 548951 amendment Huang 90129004 Sixth, the scope of patent application materials, so that digital signal data can be input requirements. Date to computer for image analysis and calculation 6 · If the first scope of the patent application is applied, the input interface connection-the computer host side = image scanning system 'can be transmitted through a computer. Transfer the image data to the computer owner. 7 · If the application of the 6th scope of the patent application is recommended, the transmission interface is selected from the general: Zhizhi system, of which the above (USB1.1), the general serial bus pumping f row丨 · 1 version of the transmission interface (USB2.〇), the computer's new L / 0 version of the transmission interface IEEE1 3 94), enhanced stringing ceremony: quasi-bus transfer interface (system interface transfer wheel interface (SCD), ^^ 介Family face group (P), and small computer system δ. A shadow test of selective shrinking function-a computer host $ cup method, including: judging the decompression time and the decompression time required by the same u The image c is like the data transmission wheel & does the system perform the data? The time difference of the contraction month is determined to 9 # such as the patent application scope No. δ 浐 ' The scanning system transmits to the computer 4 ::;: image and image ΪΞ 548951 塞 -Serial No. 9012 such as γ / ,, patent application scope M, patent application scope, 9th method, in which the above-mentioned test image sexuality I The shadow of the shrinking function of her brain is driven by the scanner when the scanning system is connected The t7 (22) view yields the test image. &Amp; method, 1: f is the same as a # of the selective compression function of item 10. The compression format of the test image described above is the same as that of the scanner. The version of the transmission interface and the interface s are selected from the universal serial bus (USB2.0). The new serial bus of the computer 2.0 version of the transmission interface. The new industry standard bus transmission interface (曲 ΙΓΓΓ ^ α '^ ^,] 4 # ι # ^ Φ (Ερρ) 1 The group consisting of the traditional interface of the round wheel interface (SCSI). Electricity such as 1 3... The expansion method includes the above-mentioned value of the time required for the test image to be decompressed, and the host computer side of the computer generates the corresponding decompression time f. ≪ The image scanning method of the selective compression function 'wherein the above comparison is made between the time of the decompression and the time required for the transmission of the same uncompressed image data and the time required for the transmission of the compressed image data Step, the time difference is the system design value, Page 16 548951 Case No. 90129004 Sixth, the longest decompression allowable for the patent application range scanning system + Nissan 15. For the selection method of item No. 14 of the patent application scope, the above comparison should be made of the decompression function. The image scanning and inserting step includes: when the decompression time _: the time of the compression function of the system design value of the 5H system, plus + $ first sigh value, start the scan speed of the image data. 16 · As described in the patent application scope of the 14th K-wide method, where the above comparison should be decompressed = Q ::: ;; The image scan step includes, when the time of the decompression is: : The compression work of the execution system of the system design value to accelerate the system T? Man, close. Scan speed of Hai image data. 7. · Image compression method with selective compression function 1. 3 ^ ^ heart 1 maze method, including: generating a test image on the end, and transmitting it to a computer host / regular via a pass_ 1% interface. The computer host side decompression ratio is thinner% 4 Time required for test image · Dagger car 乂 The time and judgment of decompression is required, %% of the time required for the transmission of the lean material, N number of rounds The required time difference; f the compressed image data is transmitted based on the computer host's decompression, b | ; And the other malformations are 1 8 · If the scope of the patent application No. 17 of the range of L (because of the selective compression function to draw an image, generate an image data image scan page 17 1 _-7 548951 92 ”----- Case No. 9012Q004_year, month, date, and patent application scope ----------- Machine ί 中 i; The test image is when a scanning system is connected to the electric king Qian Yan The test image is sent by the scanner driver. Β on == If the method of selective compression work of item 18 in the scope of patent application, The compression format of the above-mentioned test images is the same as +, and the two-image scanning.. Field compression format 法 · Method such as: The 11th version of the optional compression function of the patent scope of the image 11 version 佶, the above-mentioned transmission The interface is selected from the general sequence rendition method i! Sagata · The first version of the round robin and m ς mouth, "L machine row (USB2. 0) Vx // ^ # 2 · ^ ^ ^ 驷 New industry standards The bus transmission surface 39 ″) is a group consisting of eight enhanced serial port transmission interfaces (Epp) and small computer interfaces (SCSI). Children's knowledge system 2 1 · If == the method of selective shrinking function in item J 7 of the patent scope, where the test image described above is different from the computer host, and the value of the gatekeeper is based on between. @i 生 此 corresponding solutions I need to shrink households = method, which ί i selective selective shrinking image scanning scan image data transmission time m: time difference with the same-pen uncompressed time difference The value step is the longest solution that Ye Guangxie ’s scanning system for the lean material transmission system can allow :: System Design Value 'is-Page 18 548951 _Case No. 90129004_year month_l «| i_ VI. Patent application scope 23. If the image scanning method of the selective compression function of item 17 of the patent application scope, wherein the above step of comparing the time of decompression with the system design value includes, when the time of decompression When it is faster than the system design value, the compression function of the execution system is started to further accelerate the scanning speed of the image data. 24. If the image scanning method of the selective compression function of item 17 in the scope of patent application, wherein the step of comparing the decompression time with the system design value includes, when the decompression time is slower than the system design value At this time, the compression function of the execution system is turned off to accelerate the scanning speed of the image data. Page 19