This paper presents innovative algorithms that efficaciously exploit system redundancies to provide highly available data and voice network services. In this paper, which is based on three of his industrial patents, the author discusses two problems: i) high availability of customer data from replicated databases despite nodal or link failures on some portions of the network on which they are housed, and ii) high availability of voice and data call services in wireless networks of third generation and beyond (3GB). The main challenges in the first problem are replication of the database updates generated at a node to all the remaining network nodes, and synchronization of replicated databases despite long down times due to network or nodal failures. In the second problem, varied accessibility of multi-band call resources depending upon the mobile user ’ s position from the cell-sites housing those resources poses difficulties for optimal resources utilization. The algorithms discussed herein address these challenges.
Inductors simulated by active circuits, or active inductors, occupy much smaller area on integrated circuits, and for this reason, attracted researchers attention for more than a decade. This paper starts with a general principle and example applications of active inductors, and proceeds to summarize recent active-inductor patents. The emphasis is on transistor-level circuits, capable of operating above several GHz.
Image retrieval is an important research area, where a variety of clustering techniques have been introduced in the literature to categorise and group the image resources according to their characteristics. In this paper, we provide a brief survey of supervised and unsupervised clustering methods that have been patented up to date in accordance with their applications in image retrieval. In particular, we focus on introducing the concepts generated within these patents based on the limitations found in the classical image retrieval systems. Finally, a summary is made and future work in image retrieval is outlined.
In this paper, we review the recent patents on reactance-loaded reconfigurable antennas designed for beamforming applications mainly in wireless communication systems, which have potential to improve the system performance while maintaining the terminal cost low. More specifically, we introduce several patents on antenna configurations, control algorithms and their applications, followed by remarks on current and future developments.
This paper reviews the current techniques being applied and that have been patented in relations to the cooling of insulated electrical cables. Patents in three specific areas of application are described. The first set of patents relates to cooling methods applying water and cryogenic coolant technology. These fluid-based cooling systems have been applied to underground transmission lines, superconductors and welding cables. The second area relates to the application of redox reactive material to the cooling of electrical cables. By utilising the endothermic/exothermic characteristics of the oxidation-reduction reaction, the temperature of the cable can be controlled. The third application area is the use of phase change materials (PCM) as a heat dissipation medium utilising their high latent heat of melting. Finally, the current and future developments in the field are briefly discussed.
In the modern HDTV video decoding system, video frames must be stored into the external memory for operations of motion compensation and visual display. The massive data transferring between the decoder core and external memory contributes significantly to the overall system power consumption and bandwidth requirement. Practically, various memory reduction schemes are adopted to cope with this problem, which covers the domain of reducing the power consumption, desired memory size, and the number of Read/Write/Activate/Precharge operations of external memory. Embedded compression with less complexity, efficient frame storage architecture and improved memory management is the attractive strategy. The present review is a short review having some useful patents and researches is the field of memory reduction techniques in HDTV video decoder.
ZnO quantum dot (QD) semiconductor optical amplifier (SOA) is studied theoretically using non-Markovian gain model. SOA performance is then studied by rate equations model. These QD-SOAs have shown to have High gain, low noise figure, and polarization insensitivity. This article appraised patent and patent application related to semiconductor optical amplifier.
C-V-profiling has been performed for p-p heterostructures based on new narrow-gap compaund semiconductor ZnCdHgTe. The effective dielectric constant of the whole heterostructure and corrected carriers profile have been calculated as function of the transition region width for various compositions localized near the heterointerface. A good agreement between experimental and numerical simulation of C-V characteristics was demonstrated. Recent patents on thin film technologies are also discussed in this paper.