Patents by Inventor David W. Jones
David W. Jones 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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Publication number: 20240123452Abstract: Systems, methods, and apparatuses are provided for self-contained nucleic acid preparation, amplification, and analysis.Type: ApplicationFiled: May 19, 2023Publication date: April 18, 2024Inventors: Kirk M. Ririe, Aaron D. Wernerehl, Christopher P. Pasko, Ali Laayoun, Carole Vachon, Agnès Dupont-Filliard, Laurent Mesta, Andrew C. Hatch, Erik W. Huynh, David E. Jones
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Patent number: 10873522Abstract: An apparatus and method for testing an upstream path of a cable network are disclosed. The upstream path is tested by capturing and analyzing upstream data packets generated by a specific terminal device. A test instrument is connected at a node of the cable network. The test instrument establishes a communication session with the headend, informing the headend of an identifier of the device that will generate the test upstream data packet. The test upstream data packet is captured and analyzed at the headend, so that the results of the analysis can be communicated back to the test instrument. To speed up the packet capturing and filtering process, the upstream data packets can be pre-filtered based on packet duration and/or arrival time.Type: GrantFiled: August 21, 2018Date of Patent: December 22, 2020Assignee: VIAVI SOLUTIONS INC.Inventors: Michael D. Gotwals, David W. Jones
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Publication number: 20190075038Abstract: An apparatus and method for testing an upstream path of a cable network are disclosed. The upstream path is tested by capturing and analyzing upstream data packets generated by a specific terminal device. A test instrument is connected at a node of the cable network. The test instrument establishes a communication session with the headend, informing the headend of an identifier of the device that will generate the test upstream data packet. The test upstream data packet is captured and analyzed at the headend, so that the results of the analysis can be communicated back to the test instrument. To speed up the packet capturing and filtering process, the upstream data packets can be pre-filtered based on packet duration and/or arrival time.Type: ApplicationFiled: August 21, 2018Publication date: March 7, 2019Applicant: VIAVI SOLUTIONS INC.Inventors: Michael D. GOTWALS, David W. JONES
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Patent number: 10063454Abstract: An apparatus and method for testing an upstream path of a cable network are disclosed. The upstream path is tested by capturing and analyzing upstream data packets generated by a specific terminal device. A test instrument is connected at a node of the cable network. The test instrument establishes a communication session with the headend, informing the headend of an identifier of the device that will generate the test upstream data packet. The test upstream data packet is captured and analyzed at the headend, so that the results of the analysis can be communicated back to the test instrument. To speed up the packet capturing and filtering process, the upstream data packets can be pre-filtered based on packet duration and/or arrival time.Type: GrantFiled: September 12, 2016Date of Patent: August 28, 2018Assignee: VIAVI SOLUTIONS INC.Inventors: Michael D. Gotwals, David W. Jones
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Patent number: 9774847Abstract: A dual-port testing apparatus is provided for testing a cable network at two test points. The testing may comprise demodulation of a same data packet at the test points, decoding the data packet, performing spectral analysis of the signal, etc. Testing results may be correlated with one another, both visually and by using pre-defined test metrics comprising a weighted sum of demodulation and decoding parameters such as modulation extinction ratio and a codeword error.Type: GrantFiled: May 20, 2016Date of Patent: September 26, 2017Assignee: VIAVI SOLUTIONS INC.Inventors: Daniel K. Chappell, Richard Earl Jones, Jr., David W. Jones, Adam D. Gray
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Publication number: 20170019664Abstract: A dual-port testing apparatus is provided for testing a cable network at two test points. The testing may comprise demodulation of a same data packet at the test points, decoding the data packet, performing spectral analysis of the signal, etc. Testing results may be correlated with one another, both visually and by using pre-defined test metrics comprising a weighted sum of demodulation and decoding parameters such as modulation extinction ratio and a codeword error.Type: ApplicationFiled: May 20, 2016Publication date: January 19, 2017Inventors: Daniel K. CHAPPELL, Richard Earl JONES, JR., David W. JONES, Adam D. GRAY
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Publication number: 20160380871Abstract: An apparatus and method for testing an upstream path of a cable network are disclosed. The upstream path is tested by capturing and analyzing upstream data packets generated by a specific terminal device. A test instrument is connected at a node of the cable network. The test instrument establishes a communication session with the headend, informing the headend of an identifier of the device that will generate the test upstream data packet. The test upstream data packet is captured and analyzed at the headend, so that the results of the analysis can be communicated back to the test instrument. To speed up the packet capturing and filtering process, the upstream data packets can be pre-filtered based on packet duration and/or arrival time.Type: ApplicationFiled: September 12, 2016Publication date: December 29, 2016Applicant: VIAVI SOLUTIONS INC.Inventors: Michael D. Gotwals, David W. Jones
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Patent number: 9450686Abstract: An apparatus and method for testing an upstream path of a cable network are disclosed. The upstream path is tested by capturing and analyzing upstream data packets generated by a specific terminal device. A test instrument is connected at a node of the cable network. The test instrument establishes a communication session with the headend, informing the headend of an identifier of the device that will generate the test upstream data packet. The test upstream data packet is captured and analyzed at the headend, so that the results of the analysis can be communicated back to the test instrument. To speed up the packet capturing and filtering process, the upstream data packets can be pre-filtered based on packet duration and/or arrival time.Type: GrantFiled: June 30, 2011Date of Patent: September 20, 2016Assignee: VIAVI SOLUTIONS INC.Inventors: Michael D. Gotwals, David W. Jones
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Patent number: 9350986Abstract: A dual-port testing apparatus is provided for testing a cable network at two test points. The testing may comprise demodulation of a same data packet at the test points, decoding the data packet, performing spectral analysis of the signal, etc. Testing results may be correlated with one another, both visually and by using pre-defined test metrics comprising a weighted sum of demodulation and decoding parameters such as modulation extinction ratio and a codeword error.Type: GrantFiled: July 10, 2014Date of Patent: May 24, 2016Assignee: Viavi Solutions Inc.Inventors: Daniel K. Chappell, Richard Earl Jones, Jr., David W. Jones, Adam D. Gray
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Publication number: 20150020129Abstract: A dual-port testing apparatus is provided for testing a cable network at two test points. The testing may comprise demodulation of a same data packet at the test points, decoding the data packet, performing spectral analysis of the signal, etc. Testing results may be correlated with one another, both visually and by using pre-defined test metrics comprising a weighted sum of demodulation and decoding parameters such as modulation extinction ratio and a codeword error.Type: ApplicationFiled: July 10, 2014Publication date: January 15, 2015Inventors: Daniel K. Chappell, Richard Earl Jones, JR., David W. Jones, Adam D. Gray
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Publication number: 20130003565Abstract: An apparatus and method for testing an upstream path of a cable network are disclosed. The upstream path is tested by capturing and analyzing upstream data packets generated by a specific terminal device. A test instrument is connected at a node of the cable network. The test instrument establishes a communication session with the headend, informing the headend of an identifier of the device that will generate the test upstream data packet. The test upstream data packet is captured and analyzed at the headend, so that the results of the analysis can be communicated back to the test instrument. To speed up the packet capturing and filtering process, the upstream data packets can be pre-filtered based on packet duration and/or arrival time.Type: ApplicationFiled: June 30, 2011Publication date: January 3, 2013Applicant: Acterna LLCInventors: Michael D. Gotwals, David W. Jones
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Patent number: 7944848Abstract: The problem is that a measurement of the average signal quality (average modulation error ratio), does not identify poor quality signals that may be originating from an individual cable modem. The device of the present invention displays the modulation error ratio (MER) for each packet received. Since the media access control (MAC) address is associated with a packet received from an individual cable modem, a graph displaying the MER for each packet received is also displaying the MER for signals from the individual cable modems. Thus a technician viewing the display will be able to identify whether a low MER is a result of an impairment in the network or the from an individual cable modem.Type: GrantFiled: June 2, 2008Date of Patent: May 17, 2011Assignee: Acterna LLCInventors: Daniel K. Chappell, David Hering, Michael J. Kunczt, Kelly Watts, Adam D. Gray, David W. Jones
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Publication number: 20080298270Abstract: The problem is that a measurement of the average signal quality (average modulation error ratio), does not identify poor quality signals that may be originating from an individual cable modem. The device of the present invention displays the modulation error ratio (MER) for each packet received. Since the media access control (MAC) address is associated with a packet received from an individual cable modem, a graph displaying the MER for each packet received is also displaying the MER for signals from the individual cable modems. Thus a technician viewing the display will be able to identify whether a low MER is a result of an impairment in the network or the from an individual cable modem.Type: ApplicationFiled: June 2, 2008Publication date: December 4, 2008Applicant: ACTERNA LLCInventors: Daniel K. Chappell, David Hering, Michael J. Kunczt, Kelly Watts, Adam D. Gray, David W. Jones
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Publication number: 20020089443Abstract: A Doppler-based traffic radar system determines a speed of a moving target from a platform while substantially eliminating the possibility of detection by an operator of the moving target utilizing a traffic radar detector. The radar system includes a controller or digital signal processor for limiting the period of time the system is initially transmitting. The duration of the initial transmission period is limited such that presently available commercial radar detectors are substantially unable to detect and/or elect not to report the presence of the radar signal. Specifically, the radar system is adapted to monitor the number of accumulated digital samples from a reflected portion of the radar signal. Upon receipt of a number of samples sufficient to determine the speed of the target, the radar system ends the initial transmission. Once the samples are obtained, the radar system determines the speed of the target and displays the speed.Type: ApplicationFiled: January 11, 2002Publication date: July 11, 2002Inventor: David W. Jones
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Patent number: 6400309Abstract: A Doppler-based traffic radar system determines a speed of a moving target from a platform while substantially eliminating the possibility of detection by an operator of the moving target utilizing a traffic radar detector. The radar system limits a period of time the system is initially transmitting. The radar system is adapted to determine the speed of the target and display the speed. Dependent upon the displayed rate of speed, the radar system operator further has the ability to halt operation of the radar system with respect to the particular target or to reinitiate transmission of the transmit signal for subsequently tracking the speed of the moving target.Type: GrantFiled: May 30, 2000Date of Patent: June 4, 2002Assignee: MPH Industries, Inc.Inventor: David W. Jones
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Patent number: 6305499Abstract: An elevator system (10) includes an elevator car (18) supported for vertical movement on a belt (16) having an end fixed to the hoistway (26) and the other end wound about a drum (32) of a drum drive (12). When the belt (16) is wound or unwound about the drum (32), the elevator car (18) is raised or lowered, respectively.Type: GrantFiled: May 8, 2000Date of Patent: October 23, 2001Assignee: Otis Elevator CompanyInventors: David W. Jones, Yuji Kanzaki, Tadaaki Nabetani, Toshimitsu Mori, Shusaku Shibasaki, Yasuhisa Shioda, Hiroaki Tateno
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Patent number: 6283875Abstract: A support and alignment implement for supporting an article such as a golf club in an upright or elevated position comprises a pair of leg members, each leg member having a stretched “C” shaped proximal end and a ground engaging distal end, a spring element disposed between the proximal ends and means for joining the proximal ends such that the spring element is retained therein and maintains the proximal ends of the leg members in contact with one another in a closed position. In operation, the user extends the proximal ends of the leg members away from one another to an open position, such as by bringing. together the distal ends of the leg members, inserts the shaft of the golf club between the stretched “C” shaped proximal ends, and returns the proximal ends to the closed position, thereby securing the shaft between the proximal ends.Type: GrantFiled: October 15, 1999Date of Patent: September 4, 2001Inventor: David W. Jones
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Patent number: 5898400Abstract: A velocity/speed measurement radar unit incorporates a handle assembly for detachment from a base unit to allow for convertibility from a hand-held unit to a remote controlled radar unit. The removable handle assembly controls the operating parameters and secondary functions of the radar unit in a simple and user friendly manner. The operating parameters are established using multifunctional switches incorporated in the handle assembly, such as a trigger-type switch, rocker switches, and push button switches. The secondary functions are similarly controlled using a rotary encoder/push button switch combination. A microprocessor in the handle assembly receives inputs from the multifunctional switches and generates a corresponding control signal for transmission to the base unit. The handle assembly and base unit communicate via infra-red transmitters and receivers. The handle assembly is ergonomically designed to insure ease of use.Type: GrantFiled: September 16, 1997Date of Patent: April 27, 1999Assignee: MPH Industries, Inc.Inventors: David W. Jones, Carroll D. Williams
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Patent number: 5619817Abstract: A method and apparatus for preventing the unauthorized firing of a hand held weapon. The apparatus includes an electrically operated locking system which prevents the firing of a weapon and which, in use, consumes only small amounts of electrical energy. An electrical relay in the apparatus does not consume electrical energy while in the open or the closed position.Type: GrantFiled: April 3, 1995Date of Patent: April 15, 1997Inventor: David W. Jones
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Patent number: 5120074Abstract: A velocipede comprising a rigid frame with front and rear wheels and a crank operably connected to the rear wheels. A first member has its front end portion pivotably connected to the frame front end such that the first member is movable between upper and lower positions above and below a horizontal line passing through the pivot. A second member has a first end pivotably connected to the first member rear end portion and a second end pivotably connected to the crank such that reciprocating movement of the first member rear end portion causes the second member to rotate the crank. A third member includes a pivot disposed at its intermediate portion and has its front and rear ends movable between upper and lower positions. A pair of pedals are pivotably secured to the third member front end and movable therewith between the upper and lower positions.Type: GrantFiled: February 5, 1991Date of Patent: June 9, 1992Inventors: Leonard A. Herman, Morris Helman, David W. Jones