Abstract-Power consumption in liquid-crystal displays is analyzed by including frequent polarity reversals and duty-cycle control. A multistep voltage profile is proposed to reduce the power consumption of multiplexed and nonmultiplexed displays. The authors have also shown that the reduction in the power consumption can be achieved with a minimal increase in hardware complexity of the drive electronics.

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Abstract-Introduction of duty cycle in the binary addressing technique is proposed to enable integration of liquid crystal display drivers with a digital system in a single chip. An analysis of this technique with duty-cycle control is presented. Effects of dutycycle control on brightness uniformity of pixels in the liquid crystal display are discussed. A system on chip implementation of the technique is also demonstrated.Index Terms-Displays, duty-cycle control, liquid crystal display ( LCD), matrix addressing and multiplexing.

This paper implements an efficient way to power generation system, using solar power. Solar energy system is used to collect maximum power from sun. this proposal is to use the solar panels implemented in this project more efficiently and to carry out a realistic experimental approach to enhance the solar output power to a significant level and piezoelectric energy harvesting circuit. In this paper, piezoelectric-based energy harvesting technology is applied to generate electricity from mechanical stress (vibrations). Using piezoelectric material to harvest vibration energy from humans walking, machinery vibrating, or cars moving on a roadway is an area of great interest, because this vibration energy is otherwise untapped. Since movement is everywhere, the ability to capture this energy cheaply would be a significant advancement toward greater efficiency and cleaner energy production. The goal of this experiment is to investigate whether piezoelectricity would be able to provide sufficient source of voltage to charge the parent battery in case of rainy or cloudy days. . This configuration allows the two sources to supply the load separately or simultaneously depending on the availability of the energy sources. This paper implements an efficient way to electrify or generate electricity using solar power and piezoelectric energy harvesting circuit.

Nonlinear normal modes (NNMs), a powerful analytical tool for studying nonlinear systems is used here to study synchronization dynamics in delay coupled oscillators, which exhibit limit cycle oscillations (LCO) and hysteresis when uncoupled. A method described by Shaw and Pierre is used to arrive at the NNMs which are found to be two dimensional invariant manifolds containing closed curves corresponding to either the in-phase or out-of-phase synchronized oscillations for both delayed and non-delayed, reactively or dissipatively coupled systems. Motion initiated on these NNMs, is found to evolve strictly on them, settling onto a stable orbit if existent or on to a quasi-periodic orbit lying between the two manifolds in the absence of one. The NNMs are used to decouple the governing equations of the system, giving the in-phase and out-of-phase synchronization frequencies directly. Parametric study in terms of strength of coupling, frequency detuning and delay time is performed using the averaged equations of the system, aided by continuation software AUTO, which also reveals the bifurcations in the system. These are verified using NNM, direct numerical integration and shooting method based Floquent analysis of the original system and are found to match well. The results obtained here agree with prior work in literature, at the same time extending them to hitherto unexplored parameter range and provide a new perspective on the same from the point of view of NNMs. Hence this study demonstrates the utility of NNMs for the study of synchronization dynamics in both delayed and non delay mutually coupled LCOs and can be useful for studying larger arrays of the same.Mathematics Subject Classification (2020) 70K75 · 34D06 · 34K24