Wen C. Lin - IEEE Xplore Author Profile

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This paper describes some philosophical points of view on microprocessors/microcomputers in education and our experience of implementing the basic idea While believing in a balanced software/ hardware curriculum, it is felt that in training high-level language programming, there is little difference between that for micro-and minicomputer. The conventional computer science program on software engi...Show More
The design, development and preliminary evaluation of a microprocessor-based data acquisition and processing system which continuously and simultaneously acquires signals of fetal heart rate, intrauterine pressure, uterine cervical dilatation and variables for calculation of spatial position or pathway of fetal descent are presented. The project consists of four phases: 1) Design and fabrication o...Show More
This paper reviews the fundamentals of the basic digital computer sufficient enough for the hardware engineers and engineering executives to deal with microprocessors as components in digital system design. Two examples are used as a vehicle to guide the readers who are presumingly accustomed to thinking in hardware terms towards thinking in software. An algorithm utilizing state-minimization conc...Show More
A polynomial discriminant function is used to establish the probability density function for voice/unvoice/silence parts of speech. Based on these densities, segmentation accuracy of 95% were obtained. Voice segments are further segmented into phonemic units using threshold functions based on energy and first formant changes (80% accuracy). Multi-dimensional probability density functions based on ...Show More
The first phase of a feasibility study of automatic assembly and inspection of incandescent light bulb filaments in the industry is described. The problem is limited to the visual aspect of the system. Picture-processing and pattern-recognition techniques are employed 1) to preprocess the signal provided by a television camera, 2) to transform and extract the features of the object, 3) to classify...Show More
This paper describes an approach to the problem of signature verificzation that treats the signature as a two-dimensional image and uses the Hadamard transform of that image as a means of data reduction and feature selection. This approach does not depend on the language or alphabet used and is general enough to have applications in such areas as cloud pattern surveys, aerial reconnaisance, and hu...Show More
Handprinted character recognition by computer is accomplished on forty-nine character classes with a high recognition rate (> 99.4 percent). The form of characters is constrained by requiring each character to be handprinted on a standard grid. The grid is composed of twenty line segments, each of which forms the basis for a feature, yielding twenty features to represent each character. A person p...Show More
A novel micropower, two-channel telemetry system, which has been used to transmit the occurrence of the QRS complex of the heart waveform and temperature information, is described. The system employs pulsewidth-modulation (PWM) and pulse-position-modulation (PPM) methods plus a few unique circuits and system-design techniques so that it has the following desirable features. 1) The transmitting uni...Show More
This paper describes the results of experimental investigation of two-feature evaluation criteria, i.e., inter-intra class distance ratio and information content measure. These two indirect statistical measures take into account higher order statistical redundancies among the feature being evaluated. The algorithms are first presented and then they are applied and compared to recognize handprinted...Show More
Some problems in speech-intelligibility research are discussed, and the advantages of using a dedicated minicomputer system for this research are pointed out. A minicomputer-based signal-processing laboratory in the Department of Computing and Information Sciences and Engineering at Case Western Reserve University, Cleveland, Ohio, is described. The system consists of a PDP®-11/45 minicomputer int...Show More
In a multidegree of freedom manipulator there can exist the problem of how to coordinate all the actuators to produce movement in a space of lower dimension. In this paper statistical decision procedures are used to select an elbow position of an externally powered arm aid to deal with this problem. The decision makers are derived from a set of exoskeletal goniometer movement recordings of typical...Show More
A fast charging circuit for NiCd battery used in implant electronic systems is described. The circuit utilized the techniques of 1) sensing the internal gas pressure and temperature rise by sensing of the battery terminal voltage, and 2) setting the maximum charging current according to the concept of charge retention capacity, >95 percent after 100 cycles, of the battery. Experimental results sho...Show More