Abstract: A data processor (200) includes a processor core (300), an interface (210) coupled to the processor core (210), and a coprocessor (500). The coprocessor (500) is coupled to the processor core (300) via the interface (210) and includes a first list memory (522). In response to a predetermined instruction the processor core (300) provides an operand to the coprocessor (500) via the interface (210). The coprocessor (500) stores the operand in the first list memory (522) and performs an operation corresponding to the predetermined instruction using a plurality of values from the first line memory (522) to provide a result.

Abstract: An architecture for echo cancellation in communication networks is provided that uses a multi-stage adaptation algorithm which operates on echo cancellation filters of different configurations. When each of the configurations exhibit increased sensitivity to a different adaptation parameters, the resulting architecture gains an increased estimation accuracy. The increased accuracy readily translates into improved echo cancellation performances. In one embodiment, the architecture includes a baseband filter configuration and a passband filter configuration for echo cancellation. The increased adaptation sensitivity of the baseband filter configuration allows a more accurate estimate of the frequency offset. This estimate may then used by the passband filter configuration to attain a better echo cancellation performance.

Abstract: Terminal straps are positioned within a battery container via multiple formations formed integral to the battery container. The unique formations provide for positive location of the terminal straps relative to the battery container and the battery container lid simplifying the manufacturing process and improving product quality.

Abstract: An electrode having higher power output is formed of a thin, porous film (less than 1 micrometer) applied to a beta-alumina solid electrolyte (BASE). The electrode includes an open grid, current collector such as a series of thin, parallel, grid lines applied to the thin film and a plurality of cross-members such as loop of metal wire surrounding the BASE tube. The loops are electrically connected by a bus wire. The overall impedance of the electrode considering both the contributions from the bulk BASE and the porous electrode BASE interface is low, about 0.5 OHM/cm.sup.2 and power densities of over 0.3 watt/cm.sup.2 for extended periods.

Abstract: An electrode having increased output with slower degradation is formed of a film applied to a beta-alumina solid electrolyte (BASE). The film comprises a refractory first metal M.sup.1 such as a platinum group metal, suitably platinum or rhodium, capable of forming a liquid or a strong surface adsorption phase with sodium at the operating temperature of an alkali metal thermoelectric converter (AMTEC) and a second refractory metal insoluble in sodium or the NaM.sup.1 liquid phase such as a Group IVB, VB or VIB metal, suitably tungsten, molybdenum, tantalum or niobium. The liquid phase or surface film provides fast transport through the electrode while the insoluble refractory metal provides a structural matrix for the electrode during operation. A trilayer structure that is stable and not subject to deadhesion comprises a first, thin layer of tungsten, an intermediate co-deposited layer of tungsten-platinum and a thin surface layer of platinum.

Abstract: A new class of porous electrodes deposited on solid electrolyte for use in thermoelectric generator devices as the sodium heat engine. The electrode configuration has an openness that provides especially high electrode efficiency.