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| Number | Title | Issue Date |
| 6600730 | System for distribution of satellite signals from separate multiple satellites on a single cable line A system for distributing separate multiple satellite communication services signals to receivers at a local earth site on a single cable line. A dual satellite antenna receives the signals from two separate satellites, each of which can correspond to a r... | 07/29/2003 |
| 6539050 | Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission A communication system is used to transmit and receive a plurality of relatively narrow-band signals and wideband signals. The two signal types share a common electromagnetic spectrum by employing spreading gain and maintaining orthogonality between simul... | 03/25/2003 |
| 6519651 | Apparatus and method for hybrid network access A system in which a personal computer sends messages into a TCP/IP network using a conventional dial-up link and downloads data from the TCP/IP network using a high-speed one-way satellite link. A preferred embodiment uses a conventional SLIP provider to ... | 02/11/2003 |
| 6515617 | Method and system for position determination using geostationary earth orbit satellite A system (20) and method (30) for estimating the location of a terrestrial-based user terminal (23) is provided. The user terminal (23) is capable of measuring the relative signal strengths of a plurality of spot beams pilot signal emitted from a geostati... | 02/04/2003 |
| 6516065 | Method for implementing ciphered communication for single-hop terminal-to-terminal calls in a mobile satellite system A mobile satellite communication system is provided to control the transfer of a terminal for a single-hop call from at least one of a clear mode and a ciphered mode with respect to a gateway station to a ciphered mode with respect to a satellite link con... | 02/04/2003 |
| 6510147 | Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals A system and method for transmitting wideband signals via a radio communication system adapted for transmitting narrow-band signals is described. A base station is used to transmit and receive a plurality of relatively narrow-band and a plurality of relat... | 01/21/2003 |
| 6501423 | Method and system of directing an antenna in a two-way satellite system A system for directing an antenna for transmission over a two-way satellite network is disclosed. A transceiver is coupled to the antenna; the transceiver transmits and receives signals over the two-way satellite network. A user terminal is coupled to the... | 12/31/2002 |
| 6493664 | Spectral magnitude modeling and quantization in a frequency domain interpolative speech codec system Encoding of prototype waveform components applicable to telecommunication systems provides improved voice quality enabling a dual-channel mode of operation which permits more users to communicate over the same physical channel. A prototype word (PW) gain ... | 12/10/2002 |
| 6489902 | Data compression for use with a communications channel A method, and apparatus for accomplishing the method, of compressing data for transmission over a communications channel by receiving one or more data symbols comprising a current data string and at least one subsequent symbol, matching a longest previous... | 12/03/2002 |
| 6487251 | System and method for performing combined multi-rate convolutional coding A system and method for establishing an integrated forward error correction (FEC) scheme to perform multi-rate encoding on different priority data bits of a channel access message transmitted on a random access channel between devices of a communications ... | 11/26/2002 |
| 6476764 | Post-installation monitoring method for a satellite terminal antenna The present invention relates to a system and method for monitoring a non-tracking satellite antenna terminal's pointing accuracy in three situations. First, the pointing accuracy is monitored after initial installation of the antenna within a geo-synchro... | 11/05/2002 |
| 6473793 | Method and apparatus for selectively allocating and enforcing bandwidth usage requirements on network users A hybrid gateway includes functionality that allows bandwidth on a network (such as a satellite link) to be dynamically allocated and enforced. The hybrid gateway compares the thresholds defined for a requesting terminal's level of service and its measure... | 10/29/2002 |
| 6456257 | System and method for switching between different antenna patterns to satisfy antenna gain requirements over a desired coverage angle A system and method for controlling an antenna arrangement including a plurality of antennas employed in, for example, a user terminal of a communications network, to provide a selected antenna pattern from among different antenna patterns based on, for e... | 09/24/2002 |
| 6453289 | Method of noise reduction for speech codecs An improved noise reduction algorithm is provided, as well as a voice activity detector, for use in a voice communication system. The voice activity detector allows for a reliable estimate of noise and enhancement of noise reduction. The noise reduction a... | 09/17/2002 |
| 6445907 | Method and system for remote diagnostics of a satellite receiver A method (120) and system (20) for reporting satellite receiver diagnostic information to a remote location is provided. A satellite receiver (24) includes an interface for receiving a service request for diagnostic information, a controller (69) for gath... | 09/03/2002 |
| 6445746 | IS-136+ slot formation A system and method for demodulating slots having a mixed slot formation including differential and coherently encoded slots is disclosed. The method includes pre-phase encoding data and a predetermined sequence in a slot at a transmitter such that the en... | 09/03/2002 |
| 6441782 | Method and system of directing an antenna in a two-way satellite system A system for directing an antenna for transmission over a two-way satellite network is disclosed. A transceiver is coupled to the antenna; the transceiver transmits and receives signals over the two-way satellite network. A user terminal is coupled to the... | 08/27/2002 |
| 6438386 | Immediate channel assignment in a wireless system An approach for immediate channel assignment in a wireless communications system involves receiving a channel request message from a wireless transceiver, the channel request message including a dialed party number; forming an immediate assignment message... | 08/20/2002 |
| 6438666 | Method and apparatus for controlling access to confidential data by analyzing property inherent in data A method and apparatus for controlling access to confidential data are disclosed. The disclosed apparatus includes a non-volatile memory for storing data and a logic circuit for controlling access to the data contained in the memory. The logic circuit sel... | 08/20/2002 |
| 6438121 | Recognition and utilization of auxiliary error control transmissions A method and apparatus for determining if useful auxiliary information in an auxiliary time slot is available for subscriber unit use. The present invention includes a receiver that receives data from both an auxiliary time slot and a dedicated time slot.... | 08/20/2002 |
| 6428612 | Hydrogen getter package assembly A hydrogen getter device includes a package made from a material that is hydrogen permeable and moisture impermeable. A preferred hydrogen getter is a particulate zeolite having a portion of its sodium ions exchanged by an activated metal, such as silver.... | 08/06/2002 |
| 6430233 | Single-LNB satellite data receiver A satellite data receiver, a satellite data receiver controller, a method, an article of manufacture, and a propagated signal, which process polarization information from another satellite data receiver in order to permit multiple types of signals to be r... | 08/06/2002 |
| 6430722 | Forward error correction scheme for data channels using universal turbo codes A method of providing forward error correction for data services uses a parallel concatenated convolutional code which is a Turbo Code comprising a plurality of constituent encoders wherein a plurality of data block sizes are used in conjunction with said... | 08/06/2002 |
| 6424690 | Two-thirds rate modulation and coding scheme for Rayleigh fading channels The present invention is a method for generating short, non-systematic, non-linear (6,4) codes that may be implemented in a 4-ARY quadrature-quadrature phase shift keying (QQPSK or Q2 PSK) system over GF(16). The codewords are non-systematic in... | 07/23/2002 |
| 6418158 | Synchronization in mobile satellite systems using dual-chirp waveform A waveform to be transmitted as a burst within a channel that is used for the synchronization of unsynchronized wireless communications terminals in a wireless communications system, and a method of synchronization involving the waveform, that consists of... | 07/09/2002 |
| 6418408 | Frequency domain interpolative speech codec system Encoding of prototype waveform components applicable to GeoMobile and Telephony Earth Station (TES) providing improved voice quality enabling a dual-channel mode of operation which permits more users to communicate over the same physical channel. A protot... | 07/09/2002 |
| 6411689 | Facsimile call success rates in long delay environments A facsimile transmission relay apparatus, referred to as an Intelligent Facsimile Relay (IFR) for improving call success rates in long delay environment such as terrestrial cellular, fixed wireless, and geostationary mobile satellite systems and the like.... | 06/25/2002 |
| 6411516 | Copper slug pedestal for a printed circuit board A printed circuit board assembly includes a printed circuit board, with a first side and a second side and at least one opening formed therebetween. The opening has a slug at least partially disposed therein and attached to the first side. The second side... | 06/25/2002 |
| 6400289 | System and method for performing lossless data compression and decompression A system and method employing an improved data compression and decompression technique for use in a communication system Specifically, the system and method employs an improved YK algorithm which uses an appropriate form of the trie data structure for the... | 06/04/2002 |
| 6400319 | Communication network intialization apparatus and method for fast GPS-based positioning An apparatus and method is disclosed, utilizing a communications network (in this particular design, it is a GEM (Geo-Mobile) satellite system) to initialize a Global Positioning System (GPS) receiver (such one integrated into a handheld user terminal, or... | 06/04/2002 |
| 6396822 | Method and apparatus for encoding data for transmission in a communication system A method and apparatus for encoding data for transmission in a communication system provides increased efficiency in bandwidth utilization through higher data rates, lower error rates, lower power levels, and/or increased capacity. A set of orthogonal cod... | 05/28/2002 |
| 6389289 | Earth tiling system for providing regional based service in a mobile satellite communication network A method and apparatus for determining the proper satellite communications service to be provided to a subscriber unit that may be integrated with the geographically defined service areas used in terrestrial cellular communications systems. The pre-existi... | 05/14/2002 |
| 6388614 | Antenna aperture cover for antenna pointing an improved antenna pointing method using aperture cover An improved apparatus and method for pointing a satellite dish to receive signals from a geo-synchronous satellite. An aperture cover is used to partially block electromagnetic radiation provide to a feed horn and power and/or signal quality measurements ... | 05/14/2002 |
| 6385447 | Signaling maintenance for discontinuous information communications A system and method employing an access terminal for maintaining discontinuous communications including a gateway receiver for receiving the discontinuous information, a radio frequency (RF) communication link via geosynchronous earth orbit satellite for ... | 05/07/2002 |
| 6385727 | Apparatus for providing a secure processing environment An apparatus for providing a secure processing environment is disclosed. In one embodiment, the apparatus includes a read/write memory for storing encrypted information. It also includes a processor, a cipherer and an authenticator. The cipherer is in com... | 05/07/2002 |
| 6374096 | System and method for detecting interference present in mobile satellite communication links based on noise floor power levels of satellite communication links A method, and related apparatus, for detecting interference at a first communications terminal comprising establishing a communications link between the first communications terminal and a second communications terminal. Then monitoring a noise floor of t... | 04/16/2002 |
| 6373858 | Burst format and associated signal processing to improve frequency and timing estimation for random access channels A message format and associated method for estimating the frequency and timing offset of a reference burst of a random access channel in a time-division multiple access communications system. A signal structure in which the continuous wave segment is spli... | 04/16/2002 |
| 6370669 | Sets of rate-compatible universal turbo codes nearly optimized over various rates and interleaver sizes A method and apparatus for Turbo encoding uses a set of rate-compatible Turbo Codes optimized at high code rates and derived from a universal constituent code. The Turbo Codes have rate-compatible puncturing patterns. The method comprises: encoding a sign... | 04/09/2002 |
| 6370204 | Method and apparatus for performing digital fractional minimum shift key modulation for a very small aperture terminal A method and apparatus for performing fractional minimum shift key modulation for a very small aperture terminal. A signal with a fractional modulation which appears to be frequency shift key is generated in the indoor unit. The outdoor unit employs a nov... | 04/09/2002 |
| 6366620 | VSAT system A VSAT system for generating and transmitting a modulated data signal to a satellite. The VSAT system includes an indoor unit for generating a modulated data signal having an envelope of constant amplitude, and an outdoor unit including a transmitter modu... | 04/02/2002 |
