Abstract— We have developed a 470 × 235‐ppi poly‐Si TFT‐LCD with a novel pixel arrangement, called HDDP (horizontally double‐density pixels), for high‐resolution 2‐D and 3‐D autostereoscopic displays. 3‐D image quality is especially high in a lenticular‐lens‐equipped 3‐D mode because both the horizontal and vertical resolutions are high, and because these resolutions are equal. 3‐D and 2‐D images can be displayed simultaneously in the same picture. In addition, 3‐D images can be displayed anywhere and 2‐D characters can be made to appear at different depths with perfect legibility. No switching of 2‐D/3‐D modes is necessary, and the design's thin and uncomplicated structure makes it especially suitable for mobile terminals.
This paper presents a dual-resolution local sensor based planning method for hyper-redundant robot mechanisms. Two classes of sensor feedback control methods, working at different sampling rates and different spatial resolutions, are considered: full shape modification (FSM), and partial shape modification (PSM). FSM and PSM cooperate to utilize a mechanism's hyper-redundancy to enable both local obstacle avoidance and end-effector placement in real-time. These methods have been implemented on a thirty degree of freedom hyper-redundant nianipulator which has eleven ultrasonic distance measurement sensors and twenty infrared proximity sensors. The implementation of these algorithms in a dual CPU real-time control computer, an innovative sensor bus architecture, and a novel graphical control interface are described. Experimental results obtained using this test bed show the efficacy of the proposed method.
A 2-D/3-D convertible display using two lenticular lenses has been developed. It shows 2-D pictures in full resolution and 3-D autostereoscopic pictures in half resolution by moving one lens relative to the other. The lens assembly consists of thin metal frames, two lenticular lenses, and two shape-memory-alloy (SMA) wires used as actuators. While this assembly is applicable to flat-panel displays of any kind, its simple structure and low power consumption make it best suited to mobile terminals, such as PDAs and mobile phones. Here, we describe its structure and present evaluation results.
This paper describes a ground experiment system for space robots based on an improved version of predictive bilateral control and the results of simulated space telemanipulation experiments. The predictive bilateral control provides both the predictive and virtual contact forcesltorque along six degrees of freedom by a force reflected master-arm. The virtual contact forces are produced by the collision with a virtual guide model to move the slave-arm to a desired position quickly and safely. Ground simulation models can be calibrated by means of visual sensing using target marks. The simulator for previewing is designed to be reconjigurable by modularizing the basic functions. The system executes tasks including manual operations according to a program written in an interpreter language for interactive operations. Coupling experiments using ETS-VII Antenna Assembling Mechanism (AAM) and peg-in-hole tests were carried out to evaluate the system's effectiveness and the results obtained demonstration that it is in fact effective. Currently, we are improving the system for the use in actual ETS-VII AAM Expen'ments in space.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.