Patents Assigned to QULSAR, INC.
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Patent number: 10187861Abstract: Implementing a distributed boundary clock in situations where book-end devices such as microwave TX/RX pairs must collaborate in achieving PTP on-path support is described. A dedicated channel, generally low-speed compared to the main channel is used to transfer timing from the master side to the slave side using framing and super-framing applied to the digital channel. Time-stamps of events such as super-frame boundaries are communicated between the two sides to enable timing transfer.Type: GrantFiled: December 26, 2017Date of Patent: January 22, 2019Assignee: Qulsar, Inc.Inventor: Kishan Shenoi
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Patent number: 10142044Abstract: A Managed Timing Engine (MTE) provides a primary timing output synchronized to a selected input reference from a multiplicity of input references. Additional timing outputs can be generated such that there is a programmable frequency offset (in ppb) between them and the main output. The rate (in Hz) of the outputs can be programmable. The MTE can introduce a programmable delay for periodic phase references.Type: GrantFiled: March 20, 2014Date of Patent: November 27, 2018Assignee: QULSAR, INC.Inventors: Kishan Shenoi, Shashi Kumar, Ben Entezam
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Publication number: 20180139709Abstract: Implementing a distributed boundary clock in situations where book-end devices such as microwave TX/RX pairs must collaborate in achieving PTP on-path support is described. A dedicated channel, generally low-speed compared to the main channel is used to transfer timing from the master side to the slave side using framing and super-framing applied to the digital channel. Time-stamps of events such as super-frame boundaries are communicated between the two sides to enable timing transfer.Type: ApplicationFiled: December 26, 2017Publication date: May 17, 2018Applicant: QULSAR, INC.Inventor: Kishan Shenoi
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Patent number: 9860003Abstract: A packet network that includes the distribution of timing information (time and frequency) between server and client devices can continue to operate in a holdover mode even when the server loses its primary timing reference based on GNSS. This is achieved by populating the packet network with some client devices that also have access to the same timing reference. These devices are used in a reverse timing transfer mode to provide a hack-up reference to the server and thereby provide a graceful solution to the problem of loss of reference.Type: GrantFiled: June 30, 2014Date of Patent: January 2, 2018Assignee: Qulsar, Inc.Inventors: Kishan Shenoi, Rajendra Nath Datta
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Patent number: 9854548Abstract: A method for implementing a distributed boundary clock in situations where book-end devices such as microwave TX/RX pairs must collaborate in achieving PTP on-path support is described. A dedicated channel, generally low-speed compared to the main channel is used to transfer timing from the master side to the slave side using framing and super-framing applied to the digital channel. Time-stamps of events such as super-frame boundaries are communicated between the two sides to enable timing transfer.Type: GrantFiled: October 16, 2015Date of Patent: December 26, 2017Assignee: Qulsar, Inc.Inventor: Kishan Shenoi
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Publication number: 20170135053Abstract: A master and slave module are described that facilitate the distribution of timing, both frequency and phase over a radio link The signal transmitted from the master to the slave is suitable for delivering a frequency reference and an approximate phase/time. The precise phase at the slave is obtained by using a reverse communication between the slave and the master over the same radio channel in a time-division-duplex mode. Additional slaves can be accommodated by using a multiple time-slot arrangement.Type: ApplicationFiled: August 29, 2016Publication date: May 11, 2017Applicant: QULSAR, INC.Inventors: Kishan Shenoi, Lincolm Worsham, Nishanth Satyanarayana
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Patent number: 9529748Abstract: A master and slave module are described that facilitate the distribution of timing, both frequency and phase over a backplane. The method is applicable over any pair of shared transmission medium. The signal transmitted from the master to the slave is suitable for delivering a frequency reference and an approximate phase. The precise phase at the slave is obtained by delaying the 1PPS by a programmable amount estimated by measuring the round-trip delay between the master and slave.Type: GrantFiled: May 22, 2014Date of Patent: December 27, 2016Assignee: Qulsar, Inc.Inventors: Kishan Shenoi, Shashi Kumar
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Publication number: 20160112974Abstract: A method for implementing a distributed boundary clock in situations where book-end devices such as microwave TX/RX pairs must collaborate in achieving PTP on-path support is described. A dedicated channel, generally low-speed compared to the main channel is used to transfer timing from the master side to the slave side using framing and super-framing applied to the digital channel. Time-stamps of events such as super-frame boundaries are communicated between the two sides to enable timing transfer.Type: ApplicationFiled: October 16, 2015Publication date: April 21, 2016Applicant: QULSAR, INC.Inventor: Kishan Shenoi
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Publication number: 20150003479Abstract: A packet network that includes the distribution of timing information (time and frequency) between server and client devices can continue to operate in a holdover mode even when the server loses its primary timing reference based on GNSS. This is achieved by populating the packet network with some client devices that also have access to the same timing reference. These devices are used in a reverse timing transfer mode to provide a hack-up reference to the server and thereby provide a graceful solution to the problem of loss of reference.Type: ApplicationFiled: June 30, 2014Publication date: January 1, 2015Applicant: QULSAR, INC.Inventors: Kishan Shenoi, Rajendra Nath Datta
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Publication number: 20140351468Abstract: A master and slave module are described that facilitate the distribution of timing, both frequency and phase over a backplane. The method is applicable over any pair of shared transmission medium. The signal transmitted from the master to the slave is suitable for delivering a frequency reference and an approximate phase. The precise phase at the slave is obtained by delaying the 1PPS by a programmable amount estimated by measuring the round-trip delay between the master and slave.Type: ApplicationFiled: May 22, 2014Publication date: November 27, 2014Applicant: QULSAR, INC.Inventors: Kishan Shenoi, Shashi Kumar
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Publication number: 20140286357Abstract: A Managed Timing Engine (MTE) provides a primary timing output synchronized to a selected input reference from a multiplicity of input references. Additional timing outputs can be generated such that there is a programmable frequency offset (in ppb) between them and the main output. The rate (in Hz) of the outputs can be programmable. The MTE can introduce a programmable delay for periodic phase references.Type: ApplicationFiled: March 20, 2014Publication date: September 25, 2014Applicant: QULSAR, INC.Inventors: Kishan Shenoi, Shashi Kumar, Ben Entezam
