Abstract: An add-on protective housing to improve protection of a portable electronic device. Certain embodiments include a hard external shell in the general conformation of the electronic device. The hard shell includes one or more aperture through which one or more control of the contained device may be operated. An energy distributing layer is disposed between the electronic device and the inner surface of the hard shell to space the device apart from the shell. Certain embodiments may provide fluid and/or dust resistance to the contained device.

Abstract: A digital communication system includes a generator for generating a plurality of pulse trains, each having a different timing, and pre-compensation circuitry for synchronizing the plurality of pulse trains to a timing signal. The system also includes comparison circuitry for simultaneously comparing a received burst code signal to each of the plurality of pulse trains, where the burst code signal is synchronized to the timing signal, and a detector for detecting which of the pulse trains is a closest temporal match to the burst code signal. The pre-compensation circuitry operates to reduce acquisition time and keep PN code uncertainties within the range of the comparison circuitry.

Abstract: This invention allows a video network camera to be mounted directly against a window or other transparent surface without any additional mounting hardware. The network camera can be mounted both inside and outside of a window without additional mounting hardware. A novel mounting apparatus in conjunction with an adjustable video sensor allows the user to quickly mount and make adjustments to the viewing angle of the network camera, thus reducing installation time and installation costs. In addition, the network camera can be mounted to walls, ceilings and other surfaces as necessary by using a second mounting assembly.

Abstract: A data networking system designed to provide efficient, yet reliable, transportation of data across a time division multiplexed network. This invention allows for redundantly sending data segments wherein if bad data segments are received, they can be resent in a dynamic manner depending on the network condition and segments can be fragmented, resized and sent with low overhead due to dynamic header sizes, segment sizes, forward error correction, and cyclic redundancy checks. The result is a very adaptive network that meets the demanding requirements of networks such as power line and wireless while still being able to transport data for voice, audio, video, computer, control, and the like.

Abstract: A network synchronization method designed to provide synchronization of multiple networks and devices. This invention provides a specific method for determining which nodes are responsible for network synchronization as nodes fail or cannot see each other due to conditions on the network. This allows for fault tolerance in a network in which conditions change dynamically. In addition, this invention uses synchronization codes and network numbers to isolate separate networks using the same physical medium, thus allowing sharing of network resources.

Abstract: A data networking system and method which allows efficient use of bandwidth for data streams such as video and audio. This invention allows network nodes to dynamically identify changing network conditions which are typical on wireless and power line networks. The system and method dynamically adapt to the changes which affect network bandwidth by changing compression rates, compression types, audio/video quality, motion masks, throughput for specific connections, or mass storage of data streams until the network is capable of sending the data. The result is an improved system that requires little or no user intervention as network conditions change.

Abstract: A digital communication system includes a generator for generating a plurality of pulse trains, each having a different timing, and pre-compensation circuitry for synchronizing the plurality of pulse trains to a timing signal. The system also includes comparison circuitry for simultaneously comparing a received burst code signal to each of the plurality of pulse trains, where the burst code signal is synchronized to the timing signal, and a detector for detecting which of the pulse trains is a closest temporal match to the burst code signal. The pre-compensation circuitry operates to reduce acquisition time and keep PN code uncertainties within the range of the comparison circuitry.

Abstract: A method and system for providing low cost narrow band digital power line communication using OFDM-like protocols to promote spectral diversity, reduce data loss, and provide higher data throughput. This invention provides a specific design to accommodate the requirements of a wide variety of communication applications and is adapted to make use of an AC power line communication within a building or facility without requiring dedicated hard wiring and does so with the advantages of OFDM but without the high costs of OFDM.

Abstract: A system for providing communications between a wide variety of communication devices using the AC power line within a building or facility without requiring dedicated hard wiring. This invention is designed specifically to accommodate such devices as gateways, PCs, telephone devices, RF equipment, home automation devices and audio-visual devices.

Abstract: An integrated circuit includes a reconfigurable FIR filter has an input port for receiving digital input signals and an output coupled to a coherent signal processor and a coherent memory. The FIR filter programmably provides filtered signals to the coherent signal processor for storage in the coherent memory. The integrated circuit further includes a sequential weight processor having an input coupled to an output of the coherent memory. The sequential weight processor includes a weight memory and operates to output symbol soft decision data resulting from processing the digital input signals. The integrated circuit is programmable into one of a plurality of operating modes, including at least one of a received signal acquisition mode, a channel estimator mode, an adaptive equalizer mode, and a channel-wise differential mode.

Abstract: An integrated circuit includes a reconfigurable FIR filter has an input port for receiving digital input signals and an output coupled to a coherent signal processor and a coherent memory. The FIR filter programmably provides filtered signals to the coherent signal processor for storage in the coherent memory. The integrated circuit further includes a sequential weight processor having an input coupled to an output of the coherent memory. The sequential weight processor includes a weight memory and operates to output symbol soft decision data resulting from processing the digital input signals. The integrated circuit is programmable into one of a plurality of operating modes, including at least one of a received signal acquisition mode, a channel estimator mode, an adaptive equalizer mode, and a channel-wise differential mode.

Abstract: An integrated circuit includes a reconfigurable FIR filter has an input port for receiving digital input signals and an output coupled to a coherent signal processor and a coherent memory. The FIR filter programmably provides filtered signals to the coherent signal processor for storage in the coherent memory. The integrated circuit further includes a sequential weight processor having an input coupled to an output of the coherent memory. The sequential weight processor includes a weight memory and operates to output symbol soft decision data resulting from processing the digital input signals. The integrated circuit is programmable into one of a plurality of operating modes, including at least one of a received signal acquisition mode, a channel estimator mode, an adaptive equalizer mode, and a channel-wise differential mode.