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Artificial Neural Networks commonly referred to as ‘Neural Networks’ is a new branch of AI, that enabled a crude simulation of the structure of human brain electronically or in software. The inherent properties of human brain enable it to analyze complex patterns consisting of a number of elements, those individually reveal little of the total pattern, yet collectively represent easily recognizable objects. The concepts of Neural Networks have been motivated right from its inception, by the recognition that the human brain computes in an entirely different way from the conventional digital computers. The brain modeling techniques opens a new era of Computer System that learns, from experience and uses its experiential knowledge next time. This biologically inspired method is being touted as the wave of the future in computing, relieving the programmer from the cubicle of traditional algorithmic problem solving. Inherent non-linearity property of Neural Networks makes it particularly suitable in many signal-processing applications like sound, image processing etc.
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Display devices form an important group of devices in the electro industry. With the evolution of high definition TV (HDTV), video conferencing and other advancements in video applications, their importance is increasing. Traditionally cathode ray tubes (CRTs) are used in display devices. But the industry is searching for devices with high resolution and fill ratios that cannot be achieved in CRTs. LCDs can be use an alternative but they are not cost effective. An entirely new type of devices based on Grating Light Valve technology solves all the problems concerning resolution, fill ratio, cost, size and consumption. In addition to this GLV devices can provide digital gray scale and color reproduction. The GLV technology is based on micro electromechanical system (ME technology and can be manufactured using mainstream IC fabrication technology. providing controlled diffraction of incident light, a GLV device will produce bright dark (or even coloured) pixels in a display system. The seminar should cover, 1. Fundamental concepts 2. Architecture of GLV 3. Controlling the GLV device 4.Read more..
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Holographic associative memory can be considered as a type of artifical neural network, which is having close association with the family of analog, correlation-based, stimulus-responsive memories. In Holographic associative memory, the information is mapped on to the phase orientation of complex numbers operating. The ability of holographs in carrying out effective associative memory tasks, generalization and pattern recognition with changeable attention has given holographic memory the cutting edge over others. Natural memory has the capacity for dynamic search localization. As an example if we take the human visual perception, we the humans always have the tendency to focus on specific objects in pattern, that too we can do it with changing the focus from object to object. The computational model also does the same as the human does it, where the heart of this memory has a novel bi-model representation of pattern and a hologram like complex spherical weight state space.Read more..
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It is an optical disc technology in the infant state of research, that utilizes the revolutionary collinear holography technique that has one red laser and one blue-green laser collimated into a single beam. The data that is programmed as laser interference fringes from a holographic layer at the top of the disc is read by the blue-green laser where as the servo information from the common CD style aluminum layer near the bottom is read by the red laser, which is used as the reference beam. This disc capable of storing 3.9 terabytes of data also has a dichroic mirror layer between the holographic data and servo data, that can reflect the blue-green laser while allowing the red laser to pass through. This feature has enhanced the performance of this storage media compared to the past holographic storage media where there was lot of interferences due to both the laser passing through also lacked in its compatibility to the current CD and DVD technology.Read more..
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For the past six years, Digital Light Processing technology from Texas Instruments has made significant inroads in the projection display market. With products enabling the world’s smallest data and video projectors, HDTV’s, and digital cinema, DLP technology is extremely powerful and flexible. With success of the DMD as a spatial light modulator for projector applications, dozens of new applications are now being enabled by general- use DMD products that are recently available to developers. The same light switching speed and “on-off” (contrast) ratio that have resulted in superior projector performance, along with the capability of operation outside the visible spectrum, make the DMD very attractive for many applications, including volumetric display, holographic data storage, lithography, scientific instrumentation, and medical imaging.Read more..
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Steganography is the art and science of hiding information in ways that prevent its detection. Though steganography is an ancient craft, the onset of computer technology has given it new life. Computer-based steganographic techniques introduce changes to digital covers to embed information foreign to the native covers.Digital steganography involves the hiding of data inside a sound or image file.Steganography works by replacing bits of useless or unused data in regular computer files such as graphics, sound, text, HTML, or even floppy disks with bits of different, invisible information. Steganography strips less important information from digital content and injects hidden data in its place. This is done over the spectrum of the entire image. Computer-based steganographic techniques introduce changes to digital covers to embed information foreign to the native covers. This hidden information can be plain text, cipher text or even images. The hidden information may be communicated in the form of text, binary files, or cipher text.Read more..
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