Abstract: Methods and systems for the electrochemical finishing of SiC wafers. Embodiments of these methods use an applied electrical bias, an electrolytic oxidant removal solution and light to remove raised surface features and imperfections of an SiC wafer.

Abstract: A method and apparatus for a zone detection system in which assets and personnel to be monitored are assigned a transmitter that emits a transmitter signal that includes a common code and a unique code. Processing requirements associated with restricted zone monitoring are reduced by scanning received signals for the single common code or a relatively small number of common codes. Processing requirements associated with locating an individual transmitter are reduced by scanning for a single transmitter signal. Transmitter signals are relayed by sub-sector RF-relays to a centralized sector signal processing computer. One or more signal processing computers interface with a system controller that supports a centralized user interface configurable to manage one or more sectors.

Abstract: An on-demand program access system for broadband, frequency division multiplexed cable television signals, one or more infrastructure element (IF) constituting a local video network signal server has a plurality of subscriber premise equipment elements (SPEE) served thereby. Each SPEE constitutes a video network client. Coaxial premise wiring connects each SPEE with the IE for conducting RF modulated programming signals and bi-directional data signals between the IE and each respective SPEE using out-of-band signaling so that there is no overlap between the programming signals and the bi-directional data signals.

Abstract: A method and apparatus for a zone detection system in which assets and personnel to be monitored are assigned a transmitter that emits a transmitter signal that includes a common code and a unique code. Processing requirements associated with restricted zone monitoring are reduced by scanning received signals for the single common code or a relatively small number of common codes. Processing requirements associated with locating an individual transmitter are reduced by scanning for a single transmitter signal. Transmitter signals are relayed by sub-sector RF-relays to a centralized sector signal processing computer. One or more signal processing computers interface with a system controller that supports a centralized user interface configurable to manage one or more sectors.

Abstract: This invention relates to a novel receiver architecture, the Charge-Coupled-Device Integrated Receiver (IR), which simplifies electronic circuitry requirements and reduce baseband processing rates through efficient signal processing. The focus of this receiver's design is its use of Charge-Coupled-Device (CCD) technology. By using CCD's, in conjunction with other key technologies, to implement the signal processing techniques disclosed herein, it is possible to provide a receiver that is suitable for a wide range of applications (e.g., communications, sonar, radar, etc.). Information is presented which outlines the fundamental receiver architecture that is appropriate for a wide range of commercial services (e.g., AMPS, NAMPS, Digital Cellular, GSM, PCS, ISM, CT1, CT2, etc.) Furthermore, tile versatility of this architecture makes it suited for uses ranging from simple AM/FM receivers to complex high-order modulation TDMA/CDMA receivers.

Abstract: Apparatus for determining the vapor content of a gas/vapor mixture comprises two temperature sensing devices. One of the devices measures the temperature of a liquid evaporating from a liquid saturated wick in contact with the device. The other temperature sensing device measures the temperature of the gas/vapor mixture in which it is immersed. A cooling device is provided for condensing some of the vapor from the gas/vapor mixture to maintain a liquid supply for the wick.