129808756217252074_45Overview of CCD CCD is the technical component of photography, CMOS should be used for lower quality image of the product, its lower manufacturing costs are the advantages of a CCD, the consumption is much lower, this is also market many products without external power supply with USB interface and cheapest price reasons. Although there are large differences in the technology, but the CCD andCMOS performance gap between the two is not significant, CMOS cameras on light requirements are higher, but the issue has largely been resolved now. Current size of CCD elements for two inches or one-third inches, in the same resolution, suitable for selected components size larger as well. Image sensor and sensor. Using range image sensorsBelonging to the optoelectronic industry of opto-electronic components, digital, as well as the rapid development of network technology, semiconductor manufacturing technology, market and industry are now facing across all platforms of video, audio, communications integration coming of age, outlining the future of human beauty of everyday life. For its application in daily life, undoubtedly belongs to the digital camera products, the rate of development can beNew Moon exclusive to describe. Just a few years, digital cameras by the hundreds of thousands of pixels, to the development of even higher, 400 pixels. Not only in the developed European countries, digital cameras have a large market, is in the development of China, digital camera market is growing at an alarming rate and, therefore, its key components--the image sensor product becomes the currentAnd the object of concern to the industry, attracting many manufacturers invested. To product categories, image sensor products are mainly divided into three kinds of CCD, CMOS CIS sensor. This article mainly about CCD and CMOS sensor technology and industrial development. CCD image sensor CCD (Charged CoupledDevice) successfully developed at Bell Laboratories in 1969, by the Japanese after the company began mass production, its development has been almost more than 30 years, from the initial application has grown to more than 100,000 pixels of the current mainstream of 5 million pixels. CCD can be divided into linear (Linear) and surface (Area) in two, with styles applied to image scanningAnd on fax machines, and surface mainly used in digital cameras (DSC), video-projector, monitors, cameras, and other image input on the product.��CCD advantages generally believed that CCD sensor has the following advantages: 1. High resolution (High Resolution): image size of �� m level, sensing and identification of fine objects, improving theImage quality.��From early-stage 1-inch, six-inch, one-second inches
Diablo 3 Gold, six inches to the recent launch of one-fourth inch, from more than 100,000 in the early increase in the number of pixels to the current 400~500 pixel; 2. Low noise (Low Noise) high sensitivity: readout of the CCD has a very low noise and dark current noise, thus increasing the signal-to-noise ratio (SNR), And also with high sensitivity, the incident light can detect very low luminosity, their signal will not be covered up, the CCD's application is not subject to weather conditions yourself at home; 3. Wide dynamic range (High Dynamic Range): both reconnaissance and distinguish between strong and weak light, increase the use of system environment, are not due to differences in brightness caused by the large signal contrastLike. 4. good linear characteristic curve (Linearity): incident light intensity and size of the output signal is proportional to the relationship as well, objects without loss of information, reduce signal compensation costs; higher photon conversion efficiency (High Quantum Efficiency): very weak under incident light exposure can be recorded, If combined with image intensifier tubes and lighting, even in dark scenes can still detect the distance to be 5. Large-area photographic (Large Field of View): use of semiconductor technology has large areas of CCDD wafer manufacturing, current and the size is traditional film 35mm of the CCD has been applied in digital cameras, Become a substitute for professional key components enabling optical camera; wide spectral response (Broad Spectral Response): able to detect a wide range of wavelengths of light, increased system using elastic, expanding the fields of system application; 6. Low image distortion (Low Image Distortion): using CCDSensors, image processing no distortion, the original object information faithfully reflected; 7.��Small size, light weight characteristics of CCD with a small size and light weight, it can be easily installed in satellite and various types of navigation systems, 8.��Hao low power not under the influence of strong electromagnetic fields, 9. Charge transfer efficiency: the efficiency coefficientSignal-to-noise ratio, resolution rate, if the charge transfer efficiency is poor, images will become more fuzzy, 10.
Mass production, stable quality, strong, anti-aging, ease of use and easy maintenance. According to In-Stat in 2001, said a research report on the world image sensor, CCD industry top seven firms are for the Japanese manufacturers
wow power leveling, account for the global 98.5%Market share, in terms of technical development, now more distinctive main manufacturers include Sony, Fei li Pu and Kodak. Zafira company strengths of CCD CCD sensor with maximum size of the industry, in the application of digital camera in, the 35mm size of the CCD has been used in "Contax" digital camera, professional digitalSpokesmen of the camera. Secondly the company also has a unique "Frame-Transfer CCD" (line-by-line scanning) technology in the application of the product can be realized rate of 30-60 per second. This is the real speed of the video signal. Kodak Kodak CCD with acclaimed ITO CCD (indium tin oxide) technique, as opposed to the traditionalPoly-silicon compounds. Which is characterized by more high acuity, 20% increase in light transmittance than the average CCD, CCD sensors generally weaker Blu-ray breakthrough improvement in the anti-noise and interference, and its blue light induction capacity increased 2.5 times, and significantly lower noise interference, making the image more sharp, more accurate colors, for professional digital photography provides high resolutionAnd the sharpness of the image. Traditional CCD CCD using rectangles of the photoconductor unit, developed by Fuji company 2 years ago "SuperCCD (Super honeycomb structures) use the photoconductor unit is eight-sided polygon, use honeycomb octagonal structure, so the photoconductor unit area than conventional CCD. It would receive three benefits, one can improve theSpeed, the second is to improve the dynamic range of the CCD, three is to improve the signal-to-noise ratio. These three benefits plus the generated pixel SuperCCD later became Fuji's biggest selling points on the company products in digital cameras. Comparison of CMOS image sensor CMOS image sensors in the 80 's since the invention process because the CMOS process technologies is not high, so thatTo noise in the sensor application in larger, the commercialization process has been slow. Today, the CMOS sensor also started a very wide range of applications, including digital camera, PC Camera, video phone, third-generation mobile phones, video-conferencing and intelligent security system, parking, toys, as well as industrial and medical uses. In terms of low end products, The picture quality is close to the low end of the CCD resolution, related industries hope that efforts to replace the CCD of CMOS devices are gradually clear. CMOS sensors are to be broken down into: passive pixel CMOS sensor (Passive Pixel Sensor CMOS) and the CMOS active pixel sensor (ActivePixel Sensor CMOS����
Compared with the CCD, CMOS has a small size, power consumption less than one-tenth of the CCD, prices are cheaper than CCD one-third advantages. And compared to our CCD, CMOS process is standard technology, leverages existing semiconductor device, without additional investment in equipment, and quality with the semiconductorPromotion of technical progress. At the same time, CMOS wafer factory production lines in the world, and also conducive to reducing the cost of production in the future. In addition, CMOS sensor for maximum advantage, is that it has a high degree of system integration conditions. In theory, all the functionality required for image sensors, such as vertical displacements, horizontal shift register, time control, CDS, ADC forth And so on,Can be integrated in a chip, chip or even all include back-end chips (Back-end Chip), Flash memory (Flash RAM), also can be integrated into a single chip (SYSTEM-ON-CHIP), to achieve the aim of lower unit costs of production. Because of this, manufacturers of current research and development, production more, United States there are more than 30 enterprises, 7 in Europe, Japan about 8, Korea 1, Taiwan has 8. Leading global manufacturers are Agilent (HP), its market share of 51%, ST (VLSI Vision) 16%, Omni Vision accounted for cent, modern accounting for seven, Photobit about 8%,The five aggregate market share of 93%. According to In-Stat statistics show that CMOS sensors to global sales in 2004 are expected to exceed US $ 1.8 billion, CMOS 62% compound annual growth rate of rapid growth, gradually encroaching on CCD device applications. Especially in the last year of rapid development in the field of mobile applications, CMOSLike the photo sensor module applies the occupation of 80% per cent of its market. In the industry, different from CCD sensor is a CMOS occupy a major position in the market at the moment is the North American manufacturers, top three vendors for Agilent, OmniVision and Photobit. Image sensor technology in the industry, competition, essentiallyIs Japan and two male supremacy in North America. Markets belongs to the emerging CMOS image sensor market, its market share as always it is less mature industry unchanged, in 1999, for example, CMOS in the market, according to shipment proportion rank order of Agilent, OmniVision, STM and Hyundai, the marketShare, 24%, and 14%, respectively, of which STM is the European manufacturer, Hyundai is Korea manufacturers, but only after a year of competition in the market, Agilent and OmniVision shipped ranking order still separated one or two, and market share up to and 37.7% respectively, and STM fallsIV, market share slide sharply to 4.8%, Hyundai is sharp recession of 2.1% left in the market share, it is worth mentioning that Photobi's sharp growth in 2000, global market share growth to 13.7%, ranked third in the world. These three vendors in shipments to total global shipments of 82.2%. FromAnalysis, the concentration of industry manufacturers quite intensive, so the observation of the three recent trends and development of the company
Diablo 3 power leveling, you can see the industry and technology development. Main products to CIF for the second generation of Agilent (352*288) of HDCS-1020 and the second generation VGA (640*480) HDCS-2020, is mainly used in digital cameras, mobile phones, PDA, PC Camera, and other emerging information appliance products, in addition to Agilent in 2000 was another successful strategies and Logitech and Microsoft Strategic Alliance, the two companies, into the optical mouse products, but this is a very low order of CMOSProducts, but not to capture the image, so when doing global statistics of the image sensor is not the number of join together, but this will see the Agilent optical components based on CMOS technology into the planning intentions. OmniVision it's main products include: CIF (352 x 288), VGA (640X 480), SVGA (800 x 600) and SXGA (1280 x 1024). Omnivision now developing level of 1.3 million pixel CMOS image sensors are used by industry in digital cameras. Industry generally, megapixel for watershed using CMOS and CCD, CMOS successful entering this market, illustrates the development of CMOS technology on market penetration, and may in the future replace the CCD as low to medium range of imaging products without leaving the application. Omnivision in May 2001 the development of CIF (352 x 288) CMOS sensor, featuring low-Hao, target market positioning in mobile phones, Which echoes product development strategies and major research institutions, in mobile phones on the market today, and CMOS camera modules of the module has become the most significant products of the mobile communication applications. Photobit in 2000 was a big success. 2001 Photobit first developed CMOS image PB-0330 modelSensors, this logic of product characteristics with single chip go digital converter, one-fourth-inch, it is the second VGA (640 x 480), but also launched the PB-0111 model of CMOS image sensor, is the second generation one-fifth CIF (352 x 288). Photobit launched these two products are mainly aimed atDigital cameras and PC Camera of the digital boom in recent years, and OmniVision CIF (352 x 288) segments on the position in the mobile phone market, launched its CIF (352 x 288) or VGA (640 x 480), this analysis of the two different levels of image sensors,Intended to cover the scope of distribution in the low-order and high-order market. Last year, the industry developed CMOS image sensor technology--C3D. C3D technology's greatest feature is the pixel response uniformity. C3D technology had redefine imaging performance (that is, the overall performance of the system, including) and improved CMOS image sensor in uniform and dark current, standardPerformance. Earlier this year, the United States Foveon Foveon company displayed its latest development of X3 technology, immediately aroused the concern of the industry. Foveon X3 is the world's first full color can be captured on a pixel of image sensor array. Optoelectronic coupled devices can only be traditional induction light intensity, not sensing color information, you need toInduction through the filter color information, we call it a Bayer filter. Foveon X3 induction through the different depth of color on a pixel, the surface layer of induction blue, second-tier sensors can be green, third level sensing red. It is based on the absorption effect of Silicon on different wavelengths of light to achieve a pixel-sensing all color information is nowUsing this technique of CMOS image sensor and its application products are "Sigma SD9" digital camera. This innovative technology can provide a more sharp-edged images, better color than previous image sensors, X3 is the first built-in Silicon photoelectric sensors to detect the color. Foveon sense of traditional semiconductor technology for X3Optical technology is a great breakthrough, the effectiveness of traditional techniques, believe that Foveon X3 have very good prospects. High resolution pixel products, recently Taiwan sharp technology has industry-leading bulk roll out 2.1 million pixels CMOS image sensor, and American businessmen and Taiwan optical lens worked, will be launched in the third quarter of this CMOS sensor module combined with lens, CMOS has been started in 2 million pixel digital cameras product applications. CMOS linear image sensor on DLIS-2K---world's fastest single-port reconfigured linear image sensor measuring range: 200nm~1100nm output: digital DLIS-2K linePixel array image sensor including 4 rows, each row is 2,081 optical and 16 black pixels. 3 4 x 4 micron square pixel, another 4x32 Micron square pixel. Through the use of Correlated Multi-Sampling (CMS), the equivalent sensitivityUp to 160 V/lux-s. Each line can be any exposure and output control. In addition, the background sample can use conventional Correlated Double Sampling (CDS) value or values set to user controlled ambient light. Sensor controlled by 3-wire serial, integrating our patented technology of high speedDistributed 8 to 11 bit Analog to Digital Converter (D/AD), XtremeIX and the Active column sensor technologies to the maximum realization of application functions. Expand readsRead: 2k family of DLIS-line scan CMOS image sensor that can be configured. Sensors are used for the DLIS-2K of building advanced photodiode (APD) processes of the pixel, and IP architecture of the pannaweishen patent of image pixels. The reconfigured linear image sensor provides high performance at a low cost, combined with high sensitivityHigh speed, multi-functional, to address consumer, industrial, automotive and many applications of technology in the market. According to analysis from global industrial company is the world image sensor market value reports $ 11.7 billion is expected until 2012. Overall, image sensor has been expanded, such as video cameras, security cameras and computers, portable communications equipment and consumer electronicApplication, in the field of industrial and commercial sectors, such as biometric technology, machine vision, broadcasting, film cameras and drugs. In the automotive industry, has angular velocity increases, occupied seat sensor cruise control, lane departure systems and rear view camera needs. Imaging of the DLIS-2K is a four-line sensor, with 11-bit a/d conversion, high dynamicScope and sampling (CMS) increase the sensitivity. The sensor can be used for Spectroscopy, barcode, touchscreen, optical character recognition, computer vision, measurements and other applications. In these patented technologies and advanced products in image acquisition and reading, including flexibility: ambient light subtraction, oversampling, non-destructive read mode, different integration, automatic thresholdRead out the pixel values and a 120MHz unprecedented high resolution mode of packing. The DLIS environment surrounding the sensor with 12-bit digital and automatic light threshold subtraction. This provides a simple binary output chip, allows the bar code, touch screen or any application that needs to find a location or a mass removal of many parts of the system. UseHouseholds can also input analog signal, your application may need to be digitized. You can mix or match the operation mode, there are four possible combinations of pixels are the best solution for many different applications, line. "Our goal is to resolve at a highly competitive price point, expanded bar code image sensor and a programmable touch-screen market. CMOS imageSensor is the world's leading technology and manufacturing ability, our design team and engineers in close interaction between will help us achieve fast start production, said, "Jeffrey Zarnowski, pannaweishen imaging company's Chief Technology Officer. "We are pleased that the pannaweishen family of linear image sensor, because these products will greatly promote the various marketNumerous equipment production capacity. By combining our advanced photodiode (APD) process of pixels, and pannaweishen the company's patented image schema-pixels IP, we use linear imaging characteristics not previously achieved, said: "aweisitelumu, Vice President and General Manager of Tower Semiconductor professional business Tower. Tower 0.18 micron technology enables on-chip, optional, analog to digital converters, as well as higher data rates than previous products. APD Tower shown in the process of improving and megapixel IP for high sensitivity charge transfer characteristics over standard photodiode. Technology integrated with building and pannaweishen images of the Tower, 4x32 micron pixel sensitivity exceeding 100 v/Lux.Sec�� Pannaweishen image (Panavision Imaging) conclusions from the technical development trend, whether it is a CCD or CMOS, miniaturization and high volume of pixels remained the industry actively research and development objectives. Because pixel image resolution, the higher density and better, smaller size, moreWide. From the above two kinds of image sensor resolution, there will be a few years, is bounded by 1.3 million to 2 million pixels, and application in the field of mainstreaming to CCD, under products, starting with CMOS sensor as the mainstream. Industry analysis to early next year by the end of this year, there will be 3 million pixel CMOS listed, forecast CMOSApplication market beyond the time of CCD in 2004-2005.
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