Patents Assigned to Raymarine UK Limited
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Patent number: 9372257Abstract: A radar or sonar system amplifies the signal received by an antenna of the radar system or a transducer of the sonar system is amplified and then subject to linear demodulation by a linear receiver. There may be an anti-aliasing filter and an analog-to-digital converter between the amplifier and the linear receiver. The system may also have a digital signal processor with a network stack running in the processor. That processor may also have a network interface media access controller, where the system operates at different ranges, the modulator may produce pulses of two pulse patterns differing in pulse duration and inter-pulse spacing, those pulse patterns are introduced and used to form two radar images with the two images being derived from data acquired in a duration not more than twenty times larger than the larger inter-pulse spacing, or for a radar system, larger than one half of the antenna resolution time. One or more look-up tables may be used to control the amplifier.Type: GrantFiled: May 1, 2015Date of Patent: June 21, 2016Assignee: Raymarine UK LimitedInventors: Richard Jales, Andrew Lawrence, Matthieu Maindrou
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Patent number: 9024816Abstract: A radar or sonar system amplifies the signal received by an antenna of the radar system or a transducer of the sonar system is amplified and then subject to linear demodulation by a linear receiver. There may be an anti-aliasing filter and an analog-to-digital converter between the amplifier and the linear receiver. The system may also have a digital signal processor with a network stack running in the processor. That processor may also have a network interface media access controller, where the system operates at different ranges, the modulator may produce pulses of two pulse patterns differing in pulse duration and inter-pulse spacing, those pulse patterns are introduced and used to form two radar images with the two images being derived from data acquired in a duration not more than twenty times larger than the larger inter-pulse spacing, or for a radar system, larger than one half of the antenna resolution time. One or more look-up tables may be used to control the amplifier.Type: GrantFiled: December 30, 2013Date of Patent: May 5, 2015Assignee: Raymarine UK LimitedInventors: Richard Jales, Andrew Lawrence, Matthieu Maindrou
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Publication number: 20140320336Abstract: A radar or sonar system amplifies the signal received by an antenna of the radar system or a transducer of the sonar system is amplified and then subject to linear demodulation by a linear receiver. There may be an anti-aliasing filter and an analog-to-digital converter between the amplifier and the linear receiver. The system may also have a digital signal processor with a network stack running in the processor. That processor may also have a network interface media access controller, where the system operates at different ranges, the modulator may produce pulses of two pulse patterns differing in pulse duration and inter-pulse spacing, those pulse patterns are introduced and used to form two radar images with the two images being derived from data acquired in a duration not more than twenty times larger than the larger inter-pulse spacing, or for a radar system, larger than one half of the antenna resolution time. One or more look-up tables may be used to control the amplifier.Type: ApplicationFiled: December 30, 2013Publication date: October 30, 2014Applicant: Raymarine UK LimitedInventors: Richard Jales, Andrew Lawrence, Matthieu Maindrou
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Patent number: 8624776Abstract: A radar or sonar system amplifies the signal received by an antenna of the radar system or a transducer of the sonar system is amplified and then subject to linear demodulation by a linear receiver. There may be an anti-aliasing filter and an analog-to-digital converter between the amplifier and the linear receiver. The system may also have a digital signal processor with a network stack running in the processor. That processor may also have a network interface media access controller, where the system operates at different ranges, the modulator may produce pulses of two pulse patterns differing in pulse duration and inter-pulse spacing, those pulse patterns are introduced and used to form two radar images with the two images being derived from data acquired in a duration not more than twenty times larger than the larger inter-pulse spacing, or for a radar system, larger than one half of the antenna resolution time. One or more look-up tables may be used to control the amplifier.Type: GrantFiled: August 29, 2008Date of Patent: January 7, 2014Assignee: Raymarine UK LimitedInventors: Richard Jales, Andrew Lawrence, Matthieu Maindrou
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Patent number: 8301714Abstract: A method of wirelessly networking a system of at least first and second communication nodes includes obtaining a common power source for the at least first and second communication nodes, switching on the common power source, and establishing a power-up time. Each of the first and second communication nodes is capable of tracking the time since the power-up time. The method includes sending a start signal from one of the first and second communication nodes, wherein the start signal occurs after the power-up time and includes at least information of the elapsed time since the power up time. The method includes networking the other of the first and second communication nodes with the one of the first and second communication nodes sending the start signal, if the elapsed time of the other of the first and second communication nodes approximately matches the elapsed time provided in the start signal.Type: GrantFiled: March 16, 2010Date of Patent: October 30, 2012Assignee: Raymarine UK LimitedInventors: Mark Johnson, Chris Hodgson, Bertrand Ekoue
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Patent number: 8291757Abstract: A device and apparatus for determining wind conditions around a sailboat. The device includes means for receiving a measured wind angle and wind speed readings from a wind sensor attached to the sailboat and readings of boat heading and boat speed through the water, means for storing wind angle correction data, a computing unit for computing a corrected wind angle reading using the measured wind angle reading, the boat speed reading and the wind angle correction data and for computing a wind direction using the corrected wind angle reading and the boat heading reading, and means for displaying the wind direction. The device additionally includes input means for receiving a wind direction error tack to tack, means for determining the current tack state of the sailboat using the measured wind angle reading, and means for modifying the correction data. Thus, powerful and intuitive correction of wind direction readings is possible.Type: GrantFiled: March 4, 2011Date of Patent: October 23, 2012Assignee: Raymarine UK LimitedInventors: Mark Johnson, Chris Hodgson, David Gauthier
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Publication number: 20110102244Abstract: A radar or sonar system amplifies the signal received by an antenna of the radar system or a transducer of the sonar system is amplified and then subject to linear demodulation by a linear receiver. There may be an anti-aliasing filter and an analog-to-digital converter between the amplifier and the linear receiver. The system may also have a digital signal processor with a network stack running in the processor. That processor may also have a network interface media access controller, where the system operates at different ranges, the modulator may produce pulses of two pulse patterns differing in pulse duration and inter-pulse spacing, those pulse patterns are introduced and used to form two radar images with the two images being derived from data acquired in a duration not more than twenty times larger than the larger inter-pulse spacing, or for a radar system, larger than one half of the antenna resolution time. One or more look-up tables may be used to control the amplifier.Type: ApplicationFiled: August 29, 2008Publication date: May 5, 2011Applicant: Raymarine UK LimitedInventors: Richard Jales, Adrew Lawrence, Matthieu Maindrou