In this paper, we will discuss a low‐power and high‐integration driver IC for small‐sized TFT‐LCDs, which is applied to mobile phones. By studying a driving scheme to minimize power consumption, an output circuit for 262k colors, and chip arrangement according to the resolution, we have developed a driver IC that achieves an excellent balance between cost and performance.

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Highly effective power supply system has been developed to achieve eco-conscious server machines in data center. The number of conversion steps between AC and DC are decreased and power supply efficiency of PSU at low load is improved to increase the power supply efficiency. To develop these approaches, the built-in rack UPS method, dynamic operation number control method of PSU, and power assistance method are described in this paper. The power supply efficiency was improved 13% or more by implementing the proposed method keeping the function of UPS. In addition, a function was achieved to withstand a rapid load rising by the battery's power supply in the condition of small number of operating PSU.

Mobile AM‐LCD drivers are now key components in devices because they greatly influence display performance. In this paper, we discuss the latest drive schemes and circuit techniques for achieving a good balance between low power consumption, high‐quality images, and small chip size.

<div class="section abstract"><div class="htmlview paragraph">Autonomous Driving (AD) and Advanced Driver Assistance Systems (ADAS) are being actively developed to prevent traffic accidents. As the complexity of AD/ADAS increases, the number of test scenarios increases as well. An efficient development process that meets AD/ADAS quality and performance specifications is thus required. The European New Car Assessment Programme (Euro NCAP®<span class="xref">¹</span>) and the Japan Automobile Manufacturers Association (JAMA®<span class="xref">²</span>) have both defined test scenarios, but some of these scenarios are difficult to carry out with real-vehicle testing due to the risk of harm to human participants. Due to the challenge of covering various scenarios and situations with only real-vehicle testing, we utilize simulation-based testing in this work. Specifically, we construct a Model-in-the-Loop Simulation (MILS) environment for virtual testing of AD/ADAS control logic.</div><div class="htmlview paragraph">When the collision scenarios defined by Euro NCAP in detail with collision condition, are utilized in simulation-based testing, problems arise due to the difficulty of manually generating scenarios in which the collision position and collision timing need to be adjusted.</div><div class="htmlview paragraph">In this paper, we therefore propose an automatic scenario generation method that satisfies the intended collision condition, by means of inverse calculation that adjusts the collision position and timing automatically. This process consists of two steps. First trajectories are obtained by conducting simulations, utilizing the input with inputed scenario component and parameter variation based on the Euro NCAP. Second, the target’s position offset and timing offset that satisfy the ego car’s collision condition, are calculated from the trajectories. By applying position offset and timing offset to the base scenario, collision scenarios are generated. We also came up with a function that validates the Euro NCAP measurement error for thegenerated scenarios. Our automatic scenario generation method results in a collision error rate of about 0.2 cm for 98.02% of the Euro NCAP scenarios we tested. By utilizing the proposed scenario generation and error validation, the labor hours is expected to be reduced by up to 1/6 compared to the manual process. Our method is also applicable to custom scenarios that require precise adjusting of collision positions and timing.</div><div class="htmlview paragraph">In the EuroNCAP test scenarios, the target’s speed and acceleration are both constant, but for AD/ADAS robustness testing, irregular behavior scenarios are required. We therefore added disturbances to the collision scenario by traffic flow simulation, where multiple vehicles are generated as disturbances and the target’s irregular behavior under the influence of multiple vehicles is generated.</div><div class="htmlview paragraph">In this work, EuroNCAP and JAMA test scenarios became able to generate automaticaly, in addition collision target's irregular behavior can be considered for AD/ADAS robustness testing.</div></div>