Patents by Inventor Harold A. Rosen
Harold A. Rosen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6975600Abstract: A multimode transmission system using TDMA provides a plurality of satellite services to a ground station terminal. These services include timing beacon synchronization, multi-cast/broadcast data service, calibration data, and point-to-point data service. The multimode transmission system uses a TDM switch to generate a TDMA signal having a plurality of TDMA transmission frames. Each TDMA transmission frame includes a plurality of downlink frame time slots. Each time slot may be of variable length and is dynamically allocated to an individual satellite service based upon demand. The TDMA signal is then broadcast using an advanced transmit antenna system, which requires beam-shaping and beam power control features, to enable TDMA switching between shaped beams and spot beam modes of the antenna. These antenna features allow for the dynamic partitioning of satellite system capacity between wide-area broadcasts and localized point-to-point service and efficient utilization of the satellite transmission power.Type: GrantFiled: September 18, 2000Date of Patent: December 13, 2005Assignee: The DIRECTV Group, Inc.Inventors: Robert E. Vaughan, Harold Rosen
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Patent number: 6868981Abstract: A light weight fuel tank for a hydrogen powered airplane used as a platform for communication repeaters for communication services. An outer spherical shell member of a sandwich configuration surrounds an inner thin walled spherical shell member in which the liquid hydrogen is contained. A radial gap between the shell members is evacuated to a high vacuum. The facing surfaces of the shell members are coated with a low emissivity material. Electrical heaters are provided to control the evaporation rate of the hydrogen to match the fuel usage and to prevent icing during ascent and descent of the airplane.Type: GrantFiled: September 25, 2001Date of Patent: March 22, 2005Assignee: Hughes Electronics CorporationInventors: Harold A. Rosen, Alois Wittmann, Scott B. Pano
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Publication number: 20050032545Abstract: A method and system for communicating includes a plurality of cells having base units therein. Each of the base units communicates with a plurality of users within the cells. A communications platform is located in a stratospheric location for transmitting and receiving information with respect to the base units. A gateway station communicates with the communications platform and routes signals to terrestrial networks or other user back through the communications platform. A microcell within at least one of the cells is used to provide coverage in a small geographic area such as within a building. Each of the microcells is also in communication with the gateway station through the platform.Type: ApplicationFiled: September 1, 2004Publication date: February 10, 2005Inventors: Donald Chang, Ming Chang, Ying Feria, Harold Rosen
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Patent number: 6829479Abstract: A method and system for communicating includes a plurality of cells having base units therein. Each of the base units communicates with a plurality of users within the cells. A communications platform is located in a stratospheric location for transmitting and receiving information with respect to the base units. A gateway station communicates with the communications platform and routes signals to terrestrial networks or other user back through the communications platform. A microcell within at least one of the cells is used to provide coverage in a small geographic area such as within a building. Each of the microcells is also in communication with the gateway station through the platform.Type: GrantFiled: July 14, 2000Date of Patent: December 7, 2004Assignee: The DirecTV Group. Inc.Inventors: Donald C. D. Chang, Ming U. Chang, Ying Feria, Harold Rosen
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Publication number: 20040242153Abstract: A method and system for communicating includes a plurality of cells having base units therein. Each of the base units communicates with a plurality of users within the cells. A communications platform is located in a stratospheric location for transmitting and receiving information with respect to the base units. A gateway station communicates with the communications platform and routes signals to terrestrial networks or other user back through the communications platform. A microcell within at least one of the cells is used to provide coverage in a small geographic area such as within a building. Each of the microcells is also in communication with the gateway station through the platform.Type: ApplicationFiled: June 30, 2004Publication date: December 2, 2004Inventors: Donald C.D. Chang, Ming U. Chang, Ying Feria, Harold Rosen
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Patent number: 6799014Abstract: A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions (172) and/or actual path losses (174) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams (188) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization.Type: GrantFiled: February 6, 2002Date of Patent: September 28, 2004Assignee: The Boeing CompanyInventors: Harold A. Rosen, Todd K. Citron, Steven O. Lane, James D. Thompson, Arnold L. Berman, Robert E. Vaughan
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Patent number: 6781555Abstract: A communication system and method for reconfigurably transmitting and receiving signals via a multi-beam reflector antenna array are disclosed. The multi-beam antenna system comprises a plurality of rings of single beam reflectors, each reflector having its own feed, wherein the plurality of rings are substantially concentric or nested and disposed on separate planes such that the reflectors of adjacent rings are substantially interleaved. The method, in one embodiment, comprises generating beams from a first, second and third ring of single beam feeds, respectively reflecting each beam from the first, second and third ring of single beam feeds on a separate reflector to a substantially separate coverage area, wherein the first, second and third rings are substantially concentric and disposed on separate planes such that the reflectors of adjacent rings are substantially interleaved.Type: GrantFiled: March 5, 2002Date of Patent: August 24, 2004Assignee: The DIRECTV Group, Inc.Inventors: Parthasarathy Ramanujam, Harold A. Rosen, Mark T. Austin, William D. Beightol
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Patent number: 6725013Abstract: A communications system (10) and method of operating the communications system includes a high altitude communication device (12) that communicates with a plurality of user terminals and a gateway station (30). The gateway station (30) couples the users to terrestrial networks (32) and other users. The high altitude communication device (16) has a controller that generates a second beam having the first frequency to a service (26). The stratospheric platform (12) does not generate the second beam within a blocking area. User terminals within the service area outside the blocking area are configured to receive the first beam and the second beam.Type: GrantFiled: June 15, 2000Date of Patent: April 20, 2004Assignee: Hughes Electronics CorporationInventors: Donald C. D. Chang, Weizheng Wang, Ying Feria, Ming U. Chang, Harold A. Rosen, Wah L. Lim
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Patent number: 6684070Abstract: A TDMA beacon for satellite system synchronization includes a beacon signal generator and a time division multiplexed switch. The beacon signal generator generates a beacon signal. The TDM switch is coupled to the beacon signal generator and receives the beacon signal. The TDM switch embeds the beacon signal with a data signal into a TDMA signal. The TDMA signal is then broadcast to a ground station where the beacon signal may be extracted from the TDMA signal and used to synchronize a terminal with the satellite system.Type: GrantFiled: September 26, 2000Date of Patent: January 27, 2004Assignee: Hughes Electronics CorporationInventors: Harold A. Rosen, Arnold L. Berman, Chak M. Chie
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Patent number: 6628919Abstract: A method and system for communicating using satellites in a constellation in LEO, MEO or GEO orbits is disclosed. The system comprises a receive system, a downlink system, and a data processing system. The receive system receives an uplink signal comprising at least one data packet from at least one user in an uplink cell. The ground programmable downlink system transmits the data packet to a specific downlink cell and adjusts a power used to transmit the data packet to the specific downlink cell. The ground programmable data processing system processes and routes the data packet to an input of the downlink system such that the downlink system transmits the data packet to the specified downlink cell.Type: GrantFiled: August 9, 2000Date of Patent: September 30, 2003Assignee: Hughes Electronics CorporationInventors: Charles Curello, Scott P. Barnes, Barry Fishman, Harold A. Rosen
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Publication number: 20020168974Abstract: A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions (172) and/or actual path losses (174) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams (188) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization.Type: ApplicationFiled: February 6, 2002Publication date: November 14, 2002Inventors: Harold A. Rosen, Todd K. Citron, Steven O. Lane, James D. Thompson, Arnold L. Berman, Robert E. Vaughan
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Publication number: 20020151274Abstract: An improved satellite communication device and system are provided. The satellite communication device uses yaw or roll-yaw steering to linearize angular track of uplink cells; one-dimensional linear “ratcheting” in an uplink antenna to maintain resource allocation of uplink cells along antenna columns; phased-array downlink antennas which can track earth-fixed downlink cells while compensating for the yaw (or roll-yaw) satellite steering; and variable rate TDMA service among downlink cells in a footprint. As a result, system overhead for performing new resource allocations between satellite handovers is minimized, thereby reducing resource management and increasing system capacity. Flexible bandwidth/capacity assignment of both uplink and downlink resources to earth locations via linear cell ratcheting, uplink RF peaking switch, and data-driven variable-TDMA downlink phased-arrays, is provided.Type: ApplicationFiled: June 14, 2002Publication date: October 17, 2002Applicant: Hughes Electronics CorporationInventors: Harold A. Rosen, Steven O. Lane, Robert E. Vaughan
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Patent number: 6441785Abstract: An antenna for scanning beams in only one common angular direction or angular path includes feed elements each providing a component beam and fixed beam combiners for combining the component beams into fixed beams. The fixed beam combiners combine the component beams in a first angular direction to form the fixed beams. Variable beam combiners combine the fixed beams into scanning beams. The variable beam combiners combine the fixed beams into the scanning beams to scan the scanning beams in a second common angular direction.Type: GrantFiled: April 17, 2000Date of Patent: August 27, 2002Assignee: Hughes Electronics CorporationInventors: Harold A. Rosen, Steven O. Lane
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Patent number: 6430393Abstract: An improved satellite communication device and system are provided. The satellite communication device uses yaw or roll-yaw steering to linearize angular track of uplink cells; one-dimensional linear “ratcheting” in an uplink antenna to maintain resource allocation of uplink cells along antenna columns; phased-array downlink antennas which can track earth-fixed downlink cells while compensating for the yaw (or roll-yaw) satellite steering; and variable rate TDMA service among downlink cells in a footprint. As a result, system overhead for performing new resource allocations between satellite handovers is minimized, thereby reducing resource management and increasing system capacity. Flexible bandwidth/capacity assignment of both uplink and downlink resources to earth locations via linear cell ratcheting, uplink RF peaking switch, and data-driven variable-TDMA downlink phased-arrays, is provided.Type: GrantFiled: August 23, 1999Date of Patent: August 6, 2002Assignee: Hughes Electronics CorporationInventors: Harold A. Rosen, Steven O. Lane, Robert E. Vaughan
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Publication number: 20020101389Abstract: A communication system and method for reconfigurably transmitting and receiving signals via a multi-beam reflector antenna array are disclosed. The multi-beam antenna system comprises a plurality of rings of single beam reflectors, each reflector having its own feed, wherein the plurality of rings are substantially concentric or nested and disposed on separate planes such that the reflectors of adjacent rings are substantially interleaved. The method, in one embodiment, comprises generating beams from a first, second and third ring of single beam feeds, respectively reflecting each beam from the first, second and third ring of single beam feeds on a separate reflector to a substantially separate coverage area, wherein the first, second and third rings are substantially concentric and disposed on separate planes such that the reflectors of adjacent rings are substantially interleaved.Type: ApplicationFiled: March 5, 2002Publication date: August 1, 2002Applicant: Hughes Electronics CorporationInventors: Parthasarathy Ramanujam, Harold A. Rosen, Mark T. Austin, William D. Beightol
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Patent number: 6421528Abstract: A system and method for adjusting satellite communication signal transmit power for signals transmitted to a localized region within a satellite coverage area utilize real-time information on weather conditions (172) and/or actual path losses (174) within the localized regions to adjust the effective isotropic radiated power (EIRP) of the satellite beams (188) to minimize the total radio frequency (RF) power required for transmission. The transmission system may be realized using a variety of antenna types for transmitting spot beams and/or area coverage beams. Representative antenna implementations include multi-beam antennas having a low-level beamforming network and hybrid matrix amplifier system, phased-array with independent input amplitude control and beamsteering for each beam, and a phased-array feeding a confocal imaging system for single broadcast beam per polarization.Type: GrantFiled: April 29, 1999Date of Patent: July 16, 2002Assignee: Hughes Electronics Corp.Inventors: Harold A. Rosen, Todd K. Citron, Steven O. Lane, James D. Thompson, Arnold L. Berman, Robert E. Vaughan
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Patent number: 6388634Abstract: A communication system and method for reconfigurably transmitting and receiving signals via a multi-beam reflector antenna array are disclosed. The multi-beam antenna system comprises a plurality of rings of single beam reflectors, each reflector having its own feed, wherein the plurality of rings are substantially concentric or nested and disposed on separate planes such that the reflectors of adjacent rings are substantially interleaved. The method, in one embodiment, comprises generating beams from a first, second and third ring of single beam feeds, respectively reflecting each beam from the first, second and third ring of single beam feeds on a separate reflector to a substantially separate coverage area, wherein the first, second and third rings are substantially concentric and disposed on separate planes such that the reflectors of adjacent rings are substantially interleaved.Type: GrantFiled: October 31, 2000Date of Patent: May 14, 2002Assignee: Hughes Electronics CorporationInventors: Parthasarathy Ramanujam, Harold A. Rosen, Mark T. Austin, William D. Beightol
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Patent number: 6347719Abstract: A light weight fuel tank for a hydrogen powered airplane used as a platform for communication repeaters for communication services. An outer spherical shell member of a sandwich configuration surrounds an inner thin walled spherical shell member in which the liquid hydrogen is contained. A radial gap between the shell members is evacuated to a high vacuum. The facing surfaces of the shell members are coated with a low emissivity material. Electrical heaters are provided to control the evaporation rate of the hydrogen to match the fuel usage and to prevent icing during ascent and descent of the airplane.Type: GrantFiled: July 14, 2000Date of Patent: February 19, 2002Assignee: Hughes Electronics CorporationInventors: Harold Rosen, Alois Wittmann, Scott Pano
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Publication number: 20020011491Abstract: A light weight fuel tank for a hydrogen powered airplane used as a platform for communication repeaters for communication services. An outer spherical shell member of a sandwich configuration surrounds an inner thin walled spherical shell member in which the liquid hydrogen is contained. A radial gap between the shell members is evacuated to a high vacuum. The facing surfaces of the shell members are coated with a low emissivity material. Electrical heaters are provided to control the evaporation rate of the hydrogen to match the fuel usage and to prevent icing during ascent and descent of the airplane.Type: ApplicationFiled: September 25, 2001Publication date: January 31, 2002Applicant: Hughes Electronics CorporationInventors: Harold Rosen, Alois Wittmann, Scott Pano
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Patent number: 6288670Abstract: For an antenna on a satellite in an inclined orbit about the Earth, cross-track motion resulting from the rotation of the Earth can be reduced in antenna coordinates by yawing and/or rolling the antenna (preferably by yawing and/or rolling the entire satellite, for example, by using a reaction wheel system) by an appropriate angle, which varies throughout the orbit.Type: GrantFiled: December 23, 1999Date of Patent: September 11, 2001Assignee: Hughes Electronics CorporationInventors: Daniel D. Villani, Harold A. Rosen