Patents Assigned to Thales Broadcast & Multimedia, Inc.
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Publication number: 20050233712Abstract: A correction circuit for reducing the amount of noise generated in an analog television transmission system. A correction circuit generates a signal with opposite phase and identical amplitude to a noise signal generated by a high power amplifier and this signal is modulated with an analog television signal to be transmitted. The introduction of the reference signal results in the cancellation of the noise signal generated by the high power voltage source and results in a television signal being transmitted with a reduced level of noise.Type: ApplicationFiled: April 16, 2004Publication date: October 20, 2005Applicant: THALES BROADCAST & MULTIMEDIA, INC.Inventors: Fred Stefanik, Bruce Herget
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Patent number: 6724153Abstract: Control and filter circuits for linear power supplies, employing resistance to limit the release of stored energy and simultaneously removing the input mains AC, so as to protect a load device from damage when a high voltage fault occurs. The circuits may be used particularly in output filters for high voltage power supplies for high power transmitting tubes, such as Inductive Output Tubes used in UHF television transmitters, which must be protected from internal arcing by a controlled release of stored energy and a rapid disconnection of input power. The use of the filter circuit combined with rapid solid state switching ensures that the load is not subject to an excessive surge when a high voltage fault occurs.Type: GrantFiled: February 19, 2002Date of Patent: April 20, 2004Assignee: Thales Broadcast & Multimedia, Inc.Inventors: Alvin B. See, Fred M. Stefanik
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Publication number: 20030155868Abstract: Control and filter circuits for linear power supplies, employing resistance to limit the release of stored energy and simultaneously removing the input mains AC, so as to protect a load device from damage when a high voltage fault occurs. The circuits may be used particularly in output filters for high voltage power supplies for high power transmitting tubes, such as Inductive Output Tubes used in UHF television transmitters, which must be protected from internal arcing by a controlled release of stored energy and a rapid disconnection of input power. The use of the filter circuit combined with rapid solid state switching ensures that the load is not subject to an excessive surge when a high voltage fault occurs.Type: ApplicationFiled: February 19, 2002Publication date: August 21, 2003Applicant: THALES BROADCAST & MULTIMEDIA, INC.Inventors: Alvin B. See, Fred M. Stefanik
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Publication number: 20030026424Abstract: A system, method and computer program product, for distributing content over a terrestrial broadcast channel including a broadcast station configured to transmit over the terrestrial broadcast channel a television signal including encrypted updated content information, distributed at least one of nationally and locally, and television information to all users within a broadcast coverage area; and an apparatus pre-configured to include encrypted predetermined content information stored therein prior to acquisition of the apparatus by a user and configured to: receive over the terrestrial broadcast channel the television signal, extract the encrypted updated content information from the television signal, store the encrypted updated content information in the apparatus, decrypt the updated encrypted content information and the encrypted predetermined content information, and provide on demand at least one of the decrypted updated content information and the decrypted predetermined content information in a formaType: ApplicationFiled: February 6, 2002Publication date: February 6, 2003Applicant: THALES BROADCAST & MULTIMEDIA, INC.Inventors: Roger K. McGarrahan, Brett Evan Jenkins, Brian Scott Murtari, Edward M. Karam, Donnell M. Heyse, John D. Isham
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Patent number: 6507243Abstract: A controller-based radio frequency amplifier method and module are employed in a modular transmission system in which respective of the controller-based radio frequency amplifier modules amplify a portion of a signal that is input into the system. Each amplifier module includes an amplifier submodule have a plurality of discrete amplifiers arranged in an amplifier chain, a processor submodule is configured to control a level of the amplified output signal that is output from each amplifier module, a power supply module, and an enclosure. The processor submodule is configured to control the discrete amplifiers in the amplifier submodule such that the module may be removed or added to the system without damaging the power amplifier module or other system components.Type: GrantFiled: June 18, 2002Date of Patent: January 14, 2003Assignee: Thales Broadcast & Multimedia, Inc.Inventors: Clifford Harris, Carl Ungvarsky, Paulo Correa
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Publication number: 20020158689Abstract: A controller-based radio frequency amplifier method and module are employed in a modular transmission system in which respective of the controller-based radio frequency amplifier modules amplify a portion of a signal that is input into the system. Each amplifier module includes an amplifier submodule have a plurality of discrete amplifiers arranged in an amplifier chain, a processor submodule is configured to control a level of the amplified output signal that is output from each amplifier module, a power supply module, and an enclosure. The processor submodule is configured to control the discrete amplifiers in the amplifier submodule such that the module may be removed or added to the system without damaging the power amplifier module or other system components.Type: ApplicationFiled: June 18, 2002Publication date: October 31, 2002Applicant: THALES BROADCAST & MULTIMEDIA, INC.Inventors: Clifford Harris, Carl Ungvarsky, Paulo Correa
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Patent number: 6420935Abstract: A controller-based radio frequency amplifier method and module are employed in a modular transmission system in which respective of the controller-based radio frequency amplifier modules amplify a portion of a signal that is input into the system. Each amplifier module includes an amplifier submodule have a plurality of discrete amplifiers arranged in an amplifier chain, a processor submodule is configured to control a level of the amplified output signal that is output from each amplifier module, a power supply module, and an enclosure. The processor submodule is configured to control the discrete amplifiers in the amplifier submodule such that the module may be removed or added to the system without damaging the power amplifier module or other system components.Type: GrantFiled: June 5, 2000Date of Patent: July 16, 2002Assignee: Thales Broadcast & Multimedia, Inc.Inventors: Clifford Harris, Carl Ungvarsky, Paulo Correa
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Patent number: 6371157Abstract: A system, method and computer program product system for evacuating coolant from a liquid-cooled device. The system includes a coolant supply path adapted to be coupled between a coolant supply pump and the liquid-cooled device; a coolant return path adapted to be coupled between a coolant supply reservoir and the liquid-cooled device; and a coolant removal path coupled between the coolant supply path and the coolant return path. The coolant removal path is configured to evacuate coolant from the liquid-cooled device using a venturi effect from the coolant supply path to evacuate the coolant through the coolant return path into the reservoir.Type: GrantFiled: September 29, 2000Date of Patent: April 16, 2002Assignee: Thales Broadcast & Multimedia, Inc.Inventors: Alvin B. See, Richard A. Mitchell