TW200531521A - Method for detecting intensity of an exposure light source to adjust an image signal - Google Patents

Abstract

A method for detecting intensity of an exposure light source to adjust an image signal is applied to a scanner. After the scanner turns on and before the luminance of the exposure light source becomes stable, the scanner scans a document first, to gather an opto-electric signal corresponding to each pixel in the document. Then, transferring the opto-electric signal to a memory unit in an opto-mechanical module, to adjust the factors in a shading table and an ASIC. The method is to compensate the brightness of each pixel in order to generate image data of the document immediately.

Description

200531521 V. Description of the invention (1) '-[Technical field to which the invention belongs] Methodology ^ Γ! ^ About a method of sensing the intensity of an exposure source to adjust the image signal ^ A ^ 2 A method applied after the optical scanning device is turned on And before the brightness of its light source has stabilized, I &, 庵, 许 许 & generate the real-time scanning or preview of the exposure source intensity U § weekly change image signal method. [Previous technology] Scanner :; 疋 ::: == 4 for image, traditional platform-type parts (can be H /, basic equipment includes ... a coal machine for carrying objects to be scanned, field, Pieces or pictures) of the glass platform (W i ndow), and a light is a generation and the next generation to convert the image into a telecommunication signal; and the core of the optical machine module is the image sensor + m to focus on the German recognition (ImaK sens〇r), and the lens of the object (such as cc, 5) with a right ^ shirt image sensing element (Lens), the image sensing element is subject to strong light sound ° midnight scene & image Sensing pixels, as each image is digitally picked up, the charge is accumulated to form a pressure difference, and then converted to digital telecommunications signals by analog / original = A / D, ConVerter) to convert the brain Software ;, 隹 is converted into an electronic file, and after this, users can perform image processing, editing, storage, and output operations on the fly. In the cold shade ^ = f or multi-function business machine, the calender module is mostly used as the main "Vk ^ ° de Flu ° reseent Lamp (CCFL)" ... The m tube has high brightness and low power consumption. Long service life ^ Cry two, but, the main disadvantage is that whenever the user restarts the scanning multifunction MFP ... The glass flat panel shown in Figure 1 "and / or the corresponding coordinate axis is taken as an example. For illustration, when it goes through a warm machine

Page 6 200531521 V. Description of the invention (2)-(Warm up) Time allows the brightness of the lamp to gradually increase to a stable state as shown in "Figure 2" (that is, 榍 corresponds to the image sensing element in the "1st Map, the relationship between each captured pixel (X axis) and its corresponding photoelectric output signal), the difference between the signals captured by the pixels at the X position and the cold cathode tube The fixed characteristics and the black / white light balance table (shading Ub) contained in the memory of the scanner or the multi-function transaction can be adjusted into the brightness compensation of each point before the image scanning can be started. At room temperature In the state, this warm-up time is about 1-3 minutes. However, for some cold countries, it can take a while to use it: before using the scanner, the user is quite large = convenient, and some The user even mistakenly believes that the waiting time is too long; the original reason, and requested the return processing. 疋 糸 ,, Yuntian machine's, therefore, increasingly in this product, <hardware or multifunction business machine in the cold machine p: yi 锿^ How to reduce the scanning and opening The function to be used will be: the waiting time of Tian Zhuo, which will have [inventive content] &amp; important topics. The above-mentioned technology of the province knows the intensity of the exposure source to adjust a, The purpose of narration is to provide a scanning device, such as a scanner or a method of "Xuanfan", which can be applied after optical power-on, and the brightness of the light source of the Xuanxi function business machine, when the user's brightness to perform Real-time p L, timing, users can wait for the light source to warm up by compensating for each pixel :::: J Preview printing job, to save the time of multifunctional MFP with the cost of η, so that scanning Device or convenience. Intentional out-of-the-box functions increase user operation

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V. Description of the invention (3) _ This method is first after the user turns on the light source, but the brightness of the light source is still stable: before the situation, | Corresponding to a photoelectric output signal. . … 'To send the obtained photoelectric wheel output signal to the optical machine module's production: Second, to adjust the parameter settings of the -black / white light balance table and -specific application integrated circuit in this memory unit, to know The brightness condition when the light source is stable is prepared, and the U ^, compensation, and mode balance table is produced. After the updated black / white light is taken, the photoelectric output signals are compensated by the updated black / white light balance table to generate the corresponding material after scanning, so that the image data generated after scanning will not Strict = the image is too stable and the image is too dark. In this way, the brightness of the two sources is not strong to adjust the image signal flow. In order to understand the purpose, structural features, and functions of the present invention, the Fan * sensing exposure source is described in detail with the illustrations below: ^ Further [Embodiment] The intensity of the sensing exposure source of the present invention is applied to adjust the shadow An optical scanning device, for example, a method of scanning a cry or / I, is a machine. The optical-mechanical module of the optical scanning device includes a sensor device and a memory unit. Foot source, an image, and a black / white light level is uploaded to this memory unit to scan the document or preview the print job, '^, when the user's white light balance table performs the brightness compensation of each point, using = The brightness of this black / position is different ', resulting in scans, darkening or overshooting of each mound

200531521 V. Description of the invention (4) Bright situation. When the user turns on the light source before it reaches the stable state, the method disclosed in the present invention can compensate and correct the brightness of each pixel to perform real-time scanning or preview printing. In this way, It can save the user's time waiting for the lamp to warm up for real-time scanning or preview printing. Please refer to "Figure 3", which is a flowchart of the method of sensing the intensity of the exposure source to adjust the image signal according to the present invention, which is explained as follows: First, after the user turns on the brightness of the light source has not yet reached stability Before the situation, a file is scanned to obtain a photoelectric output signal corresponding to one of the pixels in the file (step 20). First, the entire document is scanned by the image sensing element in the optical scanning device, and the coordinate axis of the glass platform 10 shown in "Figure 1" is taken as an example for illustration. The position is moved to the position of Yn, and scanning in the X direction (X), χ2 to χη is performed at each position of the y-axis (Yi,) 2 to Υη). Each time you complete the X-direction scan of one of the positions on the Z axis, you can get the relationship between each pixel and its photoelectric output signal as shown in Figure 4. After the graph of the relationship between the pixel at each position on the Z axis and its photoelectric output signal is integrated, the position of each position on the Z axis (Υ :, Υ2 ... Υη) on the file as shown in "Figure 5" can be obtained. Relationship between pixels and their photoelectric output signals. After that, each photoelectric output signal is transmitted to a memory unit to adjust a black / white light balance meter and a special application integrated circuit's father number setting in the memory unit to perform the degree compensation of each pixel ^ and generate a Update

200531521

------ --- --- 5. Description of the invention (5) The black / "white balance sheet (step 21) α, γ2 ... γη) pixel weight: each position of the m-axis One of the black / white light balance tables is transmitted to the memory list or the multiplication algorithm (for example, 'γ = using interpolation (Interpolation). The electrical output signal is multiplied by a multiple of the number of love-a Position γ] pixels and their lightness or shrinkage), enter the "夂 /, nine" output signal at the same time and put a compensation operation Y 2 pixel compensation 'and generate the final, in order to update the black / white and black ^ White light balance meter. Photoelectric output signal, corresponding to each pixel of the balance meter compensation (step 2 2). Keep one of the scanned image data of this file to update the zero / white color /, and rotate the signal to turn Its full-scale mock-up, "balance, and table compensation, the secondary scan of the image scanned by the corresponding optoelectronics of each pixel. It is close to the second time when the lamp is scanned in a stable state = because of the light source. The brightness is unstable, so that the preview prints when the display is displayed =. Bay; too dark, and at the same time To provide users, as described above, only rabbits are used to limit the implementation of the present invention! Among them are the preferred embodiments, and the equivalent changes are made around :; Modifications are patents of this invention

Page 10 200531521 Brief description of the diagram. The first diagram is a schematic diagram of the glass platform and its corresponding coordinate axis. The second diagram is each of the f captured when the image sensing element of the optical module is at the Υη position. The relationship between the pixel (X axis) and its corresponding photoelectric output signal; Figure 3 is a flowchart of the method of sensing the intensity of the exposure source to adjust the image signal according to the present invention; Figure 4 is each position on the gamma axis A diagram of the pixels and their photoelectric output signals; and the pixels at each position on the gamma axis (I, Yn) on the resulting file after the pixels at each position on the gamma axis and their photoelectric output are integrated toward the beta system. Relation diagram with its photoelectric output signal. [Illustration of Symbols] 10 Slope Platform Step 20 Step 2 1 Step 2 2 After the user starts up, but before the brightness of the light source has reached a stable state, 'scan a file first to get the corresponding; in this file One of each pixel's photoelectric output signal and electrical output signal are stored in the -memory unit to adjust: a black / white light balance meter and a special integrated circuit parameter setting in the unit k 'to perform the compensation of each pixel. And generate-update the "black and white light balance of the table" and the black / white light balance table to compensate the signal of the photoelectric wheel corresponding to each pixel to produce this file in real time. After scanning

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Claims (1)

200531521 々 、 Scope of patent application 1. A method for sensing the intensity of an exposure source to adjust an image signal, which is applied to an optical scanning device. The optical scanning device includes a light source, an image sensing element, and a memory unit. When the brightness of the light source has not been stabilized, by compensating the brightness of each pixel for real-time scanning or preview printing, it includes the following steps: Scan a document to obtain the corresponding value of each pixel in the document. A photoelectric output signal; transmitting each of the photoelectric output signals to the memory unit to adjust a black / white light balance meter and a parameter setting of a special application integrated circuit in the memory unit to perform brightness compensation of each pixel, and Generating an updated black / white light balance table; and compensating the photoelectric output signal corresponding to each pixel with the updated black / white light balance table, so as to instantly generate an image contribution after the document is scanned. 2. The method of adjusting the image signal by sensing the intensity of the exposure source as described in item 1 of the scope of the patent application, wherein the step of scanning a file to obtain a photoelectric output signal corresponding to each pixel in the file is The document is scanned by the image sensing element of the optical scanning device. 3. The method of adjusting the image signal by sensing the intensity of the exposure source as described in item 1 of the scope of the patent application, wherein the transmitting each of the photoelectric output signals to the memory unit to adjust a black / white light in the memory unit The steps of setting the balance table and a special application integrated circuit to compensate for the brightness of each pixel and generate an updated black / white light balance table are the pixels at each position on the Y axis obtained by scanning the file Relation between its photoelectric output signal Page 12 200531521 $, patent application scope Send to a black / white light balance table in the memory unit, and perform interpolation to calculate the brightness of each pixel. 4. The method of adjusting the image signal by sensing the intensity of the exposure source as described in item 1 of the scope of the patent application, wherein the transmitting each of the photoelectric output signals to the memory unit to adjust a black / white light in the memory unit The steps of setting the balance table and a special application integrated circuit to compensate for the brightness of each pixel and generate an updated black / white light balance table are the pixels at each position on the Y axis obtained by scanning the file The relationship with its photoelectric output signal is transmitted to a black / white light balancing table in the memory unit, and is multiplied to perform brightness compensation of each pixel. Page 13