His research work has received some 8, citations; he has an h-index of 48 and an iindex of He was the main promotor and co-founder of AnaFocus Ltd. He has eight patents filed, some of which are licensed to companies.
AnaFocus was founded on the basis of his patents on vision chip architectures. Vision can hence be incorporated to applications calling for minimum SWaP, such as vision-enabled wireless sensor networks, unattended surveillance networks, low payload vehicles, personal portable vision equipment, visual prosthesis, internet-of-the-things, etc.
These applications are forecast to gain relevance in the coming years as compared to the dominant CIS niche of smart phones, tablets and other consumer domains. These new applications domains have technical challenges different from those of consumer ones. Thus, while consumer applications call for images that can be reproduced with all their fine details for their interpretation by humans, many of these new applications call for extracting the information contained into the images for their interpretation by machines.
These approaches range from distributed off-the-shelf electronics, integrated on flexible printed circuit boards to advanced alternatives such as e-skin by printed nanowires, graphene and ultra-thin chips, etc. In some cases, digital circuits use more energy than analog circuits to accomplish the same tasks, thus producing more heat which increases the complexity of the circuits such as the inclusion of heat sinks. Engineers use many methods to minimize logic redundancy in order to reduce the circuit's complexity. Daarvoor hebben we jouw toestemming nodig. Scientific discovery is continuously enabling the development of marvelous new devices based on new technology being offered to the public.
Subtle details of the images are irrelevant in many cases and may hence be discarded for storage and processing. Confronting the scientific challenges of such a move requires using computer vision concepts for the design of new generations of smart image sensor front-ends.
The endeavour is challenging because imager architects and computer vision architects have traditionally non-overlapping groups talking quite different languages. However, synergies among these two disciplines are needed to conceive new sensor front-ends that are capable to achieve minimum power and maximum efficiency by discarding irrelevant data right at the sensory front-end and precluding them to propagate into the system calling for storage and processing resources. Data reduction through pre-processing is smartly implemented in natural vision systems , .
Also, this approach has been extensively addressed in academia during the last years and vision systems using such architectural concept are recently making the transition from academic proof-of-concept prototypes to industrial products . Starting with the identification of relevant computer vision primitives for data reduction across the vision processing chain, this presentation discusses different smart-image sensor architectures for feature extraction.
Besides explaining basic architectural concepts and circuits needed to implement them, the presentation shows results from several proof-of-concept chips, from camera modules built with these sensors and from portable vision application demos using these camera modules.
He was with İstanbul Technical University from to where he became a full professor. He worked between and in the Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California, as a visiting researcher and lecturer. His research interests include artificial neural networks, biomedical signal and image processing, nonlinear circuits-systems, and control, and educational systems. GRNs govern several cellular processes such as metabolism, signalling, cell-differentiation, cell-division, cell-cycle arrest in response to DNA damage, and apoptosis.
Bistability and oscillations are two crucial nonlinear dynamical behaviours observed in a diverse area of biological systems, in particular, gene regulatory networks. The bistability in GRN is a biological switching mechanism accompanied with hysteresis.
It appears in a wide variety of GRNs including the lac operon of Escherichia coli, which is responsible for controlling the lactose metabolism under glucose starvation. On the other hand, the oscillations in GRN, such as circadian rhythm and 2-phase dynamics of tumour suppressor p53 network, are of essentially relaxation type providing constant amplitude and period, and possess self-sustaining property and the ability of synchronization to the environmental inputs and to the interlinked networks.
The talk will present a series of studies on bifurcation and local stability analysis of some primary examples of bistable switches and relaxation oscillators appearing in GRNs. His group conducts fundamental research on high-mobility materials based flexible electronics and electronic skin, and their application in robotics, prosthetics and wearable systems.
Dahiya has published more than research articles, 4 books 3 at various publication stages , and 9 patents including 7 submitted. The miniaturization led advances in microelectronics over 50 years have revolutionized our lives through fast computing and communication.
Recent advances in the field are propelled by applications such as robotics, wearable systems, and healthcare etc. Combinational Logic Systems. Sequential Logic Systems. Waveshaping and Waveform Generation. NonLinear Analog Systmes. DigitalAnalog Systems.
Suggested Reading. Cascading circuitry enable input El and enable output EO has been provided to allow octal expansion without the need for external circuitry. They can also be used to process digital information without being connected up as a computer.
An antenna is an electrical device designed to transmit or receive radio waves or, more generally, any electromagnetic waves. Antennas are used in systems such as radio and television broadcasting, point-to-point radio communication, radar, and space exploration. Antennas usually work in air or outer space, but can also be operated under water or even through soil and rock at certain frequencies.
Physically, an antenna is an arrangement of conductors that generate a radiating electromagnetic field in response to an applied alternating voltage and the associated alternating electric current, or can be placed in an electromagnetic field so that the field will induce an alternating current in the antenna and a voltage between its terminals.
An electromagnetic field is a physical influence a field that permeates through all of space, and which arises from electrically charged objects and describes one of the four fundamental forces of nature — electromagnetism. It can be viewed as the combination of an electric field and a magnetic field. Charges that are not moving produce only an electric field, while moving charges produce both an electric and a magnetic field.
Microwaves can be generated by a variety of means, generally divided into two categories: solid state devices and vacuum-tube based devices. Solid state microwave devices are based on semiconductors such as silicon or gallium arsenide, while vacuum tube based devices operate on the ballistic motion of electrons in a vacuum under the influence of controlling electric or magnetic fields. Very-large-scale integration VLSI is the process of creating integrated circuits by combining thousands of transistor-based circuits into a single chip. VLSI began in the s when complex semiconductor and communication technologies were being developed.
The first semiconductor chips held one transistor each.
Subsequent advances added more and more transistors, and as a consequence more individual functions or systems were integrated over time. The microprocessor is a VLSI device.