Motorola

About: Motorola is a company organization based out in Schaumburg, Illinois, United States. It is known for research contribution in the topics: Signal & Communications system. The organization has 27298 authors who have published 38274 publications receiving 968710 citations. The organization is also known as: Motorola, Inc. & Galvin Manufacturing Corporation.

Thermal management system for high performance PowerPC/sup TM/ microprocessors

Abstract: Thermal management is an important design issue in high-performance, low-power portable computers If the computer system is designed for worst-case processor power dissipation and environmental operating conditions, it carries an area and cost penalty for the system designer The next-generation PowerPC/sup TM/ microprocessor includes a thermal assist unit (TAU) comprised of an on-chip thermal sensor and associated logic The TAU monitors the junction temperature of the processor and dynamically adjusts processor operation to provide maximum performance under changing environmental conditions The TAU is used in conjunction with other low-power features such as dynamic power management, instruction cache throttling and static low-power modes to provide comprehensive power and thermal management This paper describes the implementation of the TAU and presents its characterization and operating data from first silicon

Low cost integrated circuit bonding process

Abstract: A low cost process for bonding a plurality of integrated circuit die to a variety of die support frames using existing, readily available equipment. Tape automatic bonding (TAB) processes offer a number of new possibilities in the assembly and packaging of integrated circuits. However, the investigation of TAB techniques or the use of TAB techniques on low volume parts is prohibited by the high cost of "bumping" or putting interconnection balls on the chip or the tape leads. The process permits placing balls on the bonding pads of a plurality of die by a wire bonder, cutting off the wire, planarizing the balls, coating the planarized region with a conductive epoxy and then registering and bonding the die to corresponding conductive patterns on die support frames.

Microplasma devices fabricated in silicon, ceramic, and metal/polymer structures: Arrays, emitters and photodetectors

Abstract: Recent advances in the development of microplasma devices fabricated in a variety of materials systems (Si, ceramic multilayers, and metal/polymer structures) and configurations are reviewed. Arrays of microplasma emitters, having inverted pyramidal Si electrodes or produced in ceramic multilayer sandwiches with integrated ballasting for each pixel, have been demonstrated and arrays as large as 30 ? 30 pixels are described. A new class of photodetectors, hybrid semiconductor/microplasma devices, is shown to exhibit photoresponsivities in the visible and near-infrared that are more than an order of magnitude larger than those typical of semiconductor avalanche photodiodes. Microdischarge devices having refractory or piezoelectric dielectric films such as Al2O3 or BN have extended lifetimes (~86% of initial radiant output after 100?h with an Al2O3 dielectric) and controllable electrical characteristics. A segmented, linear array of microdischarges, fabricated in a ceramic multilayer structure and having an active length of ~1?cm and a clear aperture of 80 ? 360??m2, exhibits evidence of gain on the 460.3 nm transition of Xe+, making it the first example of a microdischarge-driven optical amplifier.

Personal identification system

Abstract: A personal identification system includes a number of antenna preamplifier nodes coupled to collection nodes which are in turn coupled to a central computer. A personal detector unit attached to a user is inserted into an enclosure of the antenna preamplifier node. The antenna preamplifier node is electrically isolated by RF attenuation material. An antenna of the antenna preamplifier node is a low gain antenna. The antenna preamplifier node reads a coded radio frequency signal of a personal detector unit inserted into an enclosure and rejects signals of other various personal detector units in the vicinity.