Abstract: Devices, systems and methods for adaptively associating a percentile value to each of a plurality of subcarriers at which a cable modem communicates data, the percentiles value used to respectively determine an aggregated RxMER value for each subcarrier. The aggregated RxMER values for the subcarriers may be used to determine and assign one or more bitloading profiles to the cable modem.

Abstract: Devices, systems and methods that arrange cable modems into clusters so that a plurality of bitloading profiles may be determined, by which data may be communicated to and from the cable modems, after allocating the plurality of bitloading profiles among the cable modems.

Abstract: Systems and methods that receive noise measurements associated with a network device in a communications network, and for each of the plurality of subcarriers, and use the noise measurements to characterize the severity of noise ingress into the network device specifically due to interference from wireless communications in proximity to the network device.

Abstract: Systems and methods for automatically analyzing spectral power measurements to identify abnormalities. The systems and methods may receive measurements comprising RF power measured over a contiguous range of frequencies, where at least a first portion of the contiguous range is used to transmit signals and at least a second portion of the contiguous range is unused. Respective boundaries of the unused portions may be identified and infilled to provide modified measurements. The modified measurements may be automatically analyzed to identify the abnormalities.

Abstract: An air-permeable guard adapted to attach to a covering, the air permeable guard comprising a plurality of layers attached together to create one or more compartments. The guard further comprises at least one agent stored in the one or more compartments wherein the at least one agent may be a counteracting agent, a masking agent or a disinfectant agent. The masking agent may be coffee, oil and self encapsulated oil beadlet. The counteracting agent may be activated charcoal, sodium bicarbonate, zeolite, diatomaceous earth, silica gel and bentonite clay. The disinfectant agent may be a water based coating containing a cationic siloxane. In another embodiment of the invention the compartments may store the agents in a portion of the guard that is adapted to come in contact with the wearer's nostrils.

Abstract: An apparatus has a base with a first, second, and third electrical contact exposed on the base. A circuitry connected to the electrical contacts is configured to set a polarity of the first and second electrical contacts based on an identification signal received by the first and second electrical contacts.

Abstract: An air-permeable guard adapted to attach to a covering, the air permeable guard comprising a plurality of layers attached together to create one or more compartments. The guard further comprises at least one agent stored in the one or more compartments wherein the at least one agent may be a counteracting agent, a masking agent or a disinfectant agent. The masking agent may be coffee, oil and self encapsulated oil beadlet. The counteracting agent may be activated charcoal, sodium bicarbonate, zeolite, diatomaceous earth, silica gel and bentonite clay. The disinfectant agent may be a water based coating containing a cationic siloxane. In another embodiment of the invention the compartments may store the agents in a portion of the guard that is adapted to come in contact with the wearer's nostrils.

Abstract: The present invention concerns a system for transmitting a plurality of modes of digital television signals within the same transmission channel where one transmission mode is more robust than another mode. The present invention also concerns a system for receiving and decoding such signals. More specifically, an aspect of the present invention involves a method and an apparatus for utilizing a proper length of preamble data for the improvement of reception. Furthermore, another aspect of the present invention involves a method and an apparatus for inserting a preamble into a proper place in a transmitted data stream relative to the filed synchronization data. Another aspect of the present invention involves a method and an apparatus for decoding trellis-coded data, using the predetermined preamble data.

Abstract: Information is transmitted indicating when a burst mode will take place which intervenes during a regular transmission mode. The information transmitted can also include information indicating how long such a burst mode will be and the contents of the burst mode where such contents can be identified as video, audio, system information, advertisements, or interactive content.

Abstract: New capabilities will allow conventional broadcast transmission to be available to mobile devices. The present embodiments describe an apparatus and method for encoding and decoding signals. A method includes the steps of generating data blocks, encoding a first set of data blocks using a first encoding rate, encoding a second set of data blocks using a second encoding rate, and generating a control packet, the control packet identifying the first set of data blocks and the first encoding rate, and identifying the second set of data blocks and the second encoding rate. An apparatus includes a first decoder receiving data and decoding a first subset of the data, including a control packet, at a first decoding rate and a controller controlling the operation of the first decoder based on the decoded control packet.

Abstract: A system for inserting alert based information into broadcast programming over a program distribution network. A program distributor transmits broadcast programming over program distribution network via a network fabric. When program distributor receives alert based information, the program distributor converts the alert information from a first format to a second format compatible with the broadcast programming and the program distributor inserts the converted alert into a signal carrying the broadcast programming via the network fabric. A method is also disclosed for inserting alert based information into a broadcast programming transmitted over a program distribution network.

Abstract: A method for providing local security of audio and video content during transmission and storage within digital home networks. Scrambled content may be recorded in all conditions, however, only authorized copies are processed for descrambling and viewing. Content is protected within a network by rebundling the keys required for descrambling, e.g., the TDES keys, into a new ECM (LECM), which is protected by a local public key.

Abstract: An acoustic reflector suitable for use as a reflective target for navigational aids and for location and re-location applications. The acoustic reflector comprises a shell arranged to surround a solid core. The shell is adapted to transmit acoustic waves incident thereon into the core. Within the core the acoustic waves are focused before being reflected from an opposing side of the shell to provide a reflected acoustic wave. The shell has at least two areas of transmissibility such that the waves incident on the shell follow separate paths within the core before being re-radiated and combining constructively to provide an enhanced reflected acoustic wave at one or more pre-determined frequencies.

Abstract: A method and apparatus for using DVD subpicture formatted information within a MPEG data stream to provide data channel information to a television receiver. More particularly, the television receiver comprises a MPEG decoder and a DVD subpicture processor. The MPEG decoder decodes the MPEG stream and extracts the DVD subpicture formatted signal and the DVD subpicture decoder processes one or more DVD subpicture bitstreams to produce DVD graphics. The DVD subpicture bitstream is used to carry and display data channel information such as stock quotes, electronic program guide information, advertisement information, and the like as well as provide interactive menuing functions.

Abstract: An acoustic reflector (10) suitable for use as a reflective target for navigational aids and for location and re-location applications. The acoustic reflector comprises a shell (12) arranged to surround a solid core (16). The shell is adapted to transmit acoustic waves (18) incident thereon into the core (16). Within the core the acoustic waves are focused before being reflected from an opposing side of the shell (20) to provide a reflected acoustic wave. A portion of the acoustic waves incident on the shell is coupled into the shell wall and guided within and around the circumference thereof (26) before being re-radiated and combining constructively with the reflected acoustic wave to provide an enhanced reflected acoustic wave.

Abstract: An acoustic reflector suitable for use as a reflective target for navigational aids and for location and re-location applications. The acoustic reflector comprises a shell arranged to surround a solid core. The shell is adapted to transmit acoustic waves incident thereon into the core. Within the core the acoustic waves are focused before being reflected from an opposing side of the shell to provide a reflected acoustic wave. The shell has at least two areas of transmissibility such that the waves incident on the shell follow separate paths within the core before being re-radiated and combining constructively to provide an enhanced reflected acoustic wave at one or more pre-determined frequencies.

Abstract: A method for communicating data, such as audio/video (AV) data, over plural channels involves selecting data and encryption information, and encrypting the data with the encryption information to thereby produce encrypted data. The encryption information is broken into portions. The encrypted data is communicated by way of at least one of the plural channels, and at least some portions of the encryption information are communicated over at least one channel other than that one over which the encrypted data is communicated. In a more general case, the encrypted data is sent over one channel, and the encryption information is divided and sent over several other channels.

Abstract: Information is transmitted indicating when a burst mode will take place which intervenes during a regular transmission mode. The information transmitted can also include information indicating how long such a burst mode will be and the contents of the burst mode where such contents can be identified as video, audio, system information, advertisements, or interactive content.

Abstract: The present invention concerns a system for transmitting a plurality of modes of digital television signals within the same transmission channel where one transmission mode is more robust than another mode. The present invention also concerns a system for receiving and decoding such signals. More specifically, an aspect of the present invention involves a method and an apparatus for utilizing a proper length of preamble data for the improvement of reception. Furthermore, another aspect of the present invention involves a method and an apparatus for inserting a preamble into a proper place in a transmitted data stream relative to the filed synchronization data. Another aspect of the present invention involves a method and an apparatus for decoding trellis-coded data, using the predetermined preamble data.

Abstract: A method and architecture for processing signal communications between an encoder and decoder operating according to the ATSC standard adapted for mobile handheld transmission is disclosed. The method and apparatus comprises embedding code rate identifiers in the packet ID and training sequences, using a chirp sequence as a training sequence and transmitting data in a single burst wherein the data is encoded according to multiple code rates.