Patents by Inventor Robert J. Davies

Robert J. Davies 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).

  • Patent number: 6873750
    Abstract: An electro-optic modulator structure for particular use in narrowband optical subcarrier systems. A traveling wave is established across the active region of the device, instead of a standing wave. This is accomplished through the use of a directional resonator structure that prevents reverse-traveling waves from being established within the resonator. Hence, the electric field is applied to the traveling optical wave in a similar fashion to a traveling-wave modulator, except that the traveling wave has a much greater amplitude due to the build-up of energy inside the resonator. Since the modulator is operated in a traveling-wave fashion, it can be tuned to operate at any frequency using tuning elements, regardless of the length of the active region. Furthermore, the microwave and optical signals can be velocity-matched to mitigate optical transit time effects that are normally associated with a resonant modulator utilizing a standing-wave electrode structure.
    Type: Grant
    Filed: March 12, 2003
    Date of Patent: March 29, 2005
    Assignee: Telecommunications Research Laboratories
    Inventors: Sean V. Hum, Robert J. Davies, Michal Okoniewski
  • Patent number: 6871052
    Abstract: An antenna diversity receiver comprises a zero-IF receiver connected to two antennas (102a, 102b) via switches (532,534). Simultaneous measurement of signal qualities from both antennas is possible by routing signals from the first antenna (102a) via a first mixer (106) and channel filter (116) and routing signals from the second antenna (102b) via a second mixer (108) and channel filter (118). A diversity controller (536) compares the signal qualities received from the antennas (102a,102b) during a data preamble to select a preferred antenna, then adjusts the switches (532,534) to route the signals from the preferred antenna to both input mixers (106,108). The amplifier (104a,104b) connected to the deselected antenna may be switched off during data reception, thereby minimizing extra power consumption. Such an antenna diversity receiver enables effective antenna selection to be performed, even in systems such as Bluetooth where only a very short preamble is provided for receiver configuration.
    Type: Grant
    Filed: June 28, 2001
    Date of Patent: March 22, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Adrian G. Spencer, Robert J. Davies
  • Patent number: 6868256
    Abstract: A communication system includes first and second beacon devices capable of wireless message transmission and at least one portable client device capable of receiving such message transmissions. The client device is arranged to broadcast an inquiry message according to a first communication protocol, such as Bluetooth. The first beacon detects such inquiry messages and replies with an inquiry response containing an identifier for the second beacon, enabling the second beacon and client device to perform a service interaction. In an alternative embodiment receipt of the inquiry message is notified to the second beacon which then sends the inquiry response to the client device.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: March 15, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Saul R. Dooley, Robert J. Davies
  • Patent number: 6856810
    Abstract: A multicast radio data communication system comprising a master (1) and a plurality of slave stations (2, 3, 4), and using a retransmission protocol. Data is transmitted by the master station and received by the slave stations. One slave station is designated the primary slave station, and all other slaves are designated secondary slave stations. Any slave station may transmit a negative acknowledgement but only the primary slave may transmit a positive acknowledgement. Positive and negative acknowledgements are transmitted substantially simultaneously. Negative acknowledgements corrupt reception of the positive acknowledgement by the master station, thereby ensuring that the data is retransmitted. The primary slave station is selected to have the lowest quality radio link, which may be ensured by a power control command from the master.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: February 15, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Robert J. Davies
  • Patent number: 6816730
    Abstract: A data transmission system comprises a first (12) and two or more second (13, 14, 15) beacon devices interconnected (11) as a cluster capable of wireless message transmission, and at least one mobile device (10) capable of receiving such message transmissions. The first beacon (12) is arranged to broadcast a series of inquiry messages (INQ) according to a first communications protocol, such as Bluetooth. The mobile device (10) detects such inquiry messages and replies with an identifier for itself. The link (A) from the first beacon device is then re-established between a selected one (14) of the second beacon devices. When a handover trigger event occurs, paging and page response messages are used to select a further second beacon device (13) and transfer the communications link (C) thereto.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: November 9, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Robert J. Davies, Paul M. Fulton, Robert L. Blake
  • Publication number: 20040214817
    Abstract: The present invention relates to inhibitors of protein kinases. The invention also provides pharmaceutical compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders.
    Type: Application
    Filed: November 17, 2003
    Publication date: October 28, 2004
    Inventors: Albert C. Pierce, Michael Amost, Robert J. Davies, Cornelia J. Forster, Vincent Galullo, Ronald Grey, Mark Ledeboer, Shi-Kai Tian, Jinwang Xu, Hayley Binch, Brian Ledford, David Messersmith, Suganthi Nanthakumar, Andrew Jayaraj, Greg Henkel, Francesco G. Salituro, Jian Wang
  • Publication number: 20040186115
    Abstract: The present invention provides a compound of formula (I): 1
    Type: Application
    Filed: December 17, 2003
    Publication date: September 23, 2004
    Inventors: Mark Ledeboer, Robert J. Davies, David Messersmith, Young-Choon Moon, Michael D. Mullican
  • Patent number: 6763224
    Abstract: A data transmission system comprises a large number of networked data beacons interconnected and grouped together in respective clusters. In the system, a first (12) and two or more second (13, 14, 15) beacon devices are interconnected (11) as a cluster capable of wireless message transmission, and at least one mobile device (10) capable of receiving such message transmissions. The first beacon (12) is arranged to broadcast a series of inquiry messages (INQ) according to a first communications protocol, such as Bluetooth, but with the addition of an identifier for the cluster (CL). The mobile device (10) detects such inquiry messages and replies with an identifier for itself, together with message reason data. The link (A) from the first beacon device is then re-established between a selected one (14) of the second beacon devices, with interaction between the mobile device (10) and selected second beacon device (14) being controlled at least partly by the message reason data.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: July 13, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Robert J. Davies, Paul M. Fulton, Robert L. Blake
  • Patent number: 6734712
    Abstract: A parallel-summation logarithmic amplifier is described that uses a novel topology of cascaded and parallel amplifiers to achieve extremely high bandwidth. Included in the topology is a unique delay matching scheme for logarithmic amplifiers that is amenable to fabrication in integrated circuit form. The result is flat group delay over broad frequency ranges and different power levels. The resulting log amplifier is suitable for radar applications and for use in high data rate fiber-optic networks. Also described is a unique design process that yields a set of amplifier gains that closely approximate a logarithm. Also described is the novel idea of using a parallel feedback amplifier (PFA) in piecewise-approximate logarithmic amplifiers. This innovation allows for the design of broadband amplifiers with significantly different gains and similar phase characteristics, which is extremely useful when designing high-frequency logarithmic amplifiers.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: May 11, 2004
    Assignee: Telecommunications Research Laboratories
    Inventors: Christopher D. Holdenried, James W. Haslett, John G. McRory, Robert J. Davies
  • Publication number: 20030232986
    Abstract: The present invention relates to novel classes of compounds which are caspase inhibitors, in particular interleukin-1&bgr; converting enzyme (“ICE”) inhibitors. This invention also relates to pharmaceutical compositions comprising these compounds. The compounds and pharmaceutical compositions of this invention are particularly well suited for inhibiting caspase activity and consequently, may be advantageously used as agents against interleukin-1-(“IL-1”) , apoptosis-, interferon-&ggr; inducing factor-(IGIF), or interferon-&ggr;-(“IFN-&ggr;”) mediated diseases, including inflammatory diseases, autoimmune diseases, destructive bone disorders, proliferative disorders, infectious diseases, and degenerative diseases.
    Type: Application
    Filed: December 6, 2002
    Publication date: December 18, 2003
    Applicant: Vertex Pharmaceuticals Incorporated
    Inventors: Marion M. Wannamaker, Guy W. Bemis, Paul S. Charifson, David J. Lauffer, Michael D. Mullican, Mark A. Murcko, Keith P. Wilson, James W. Janetka, Robert J. Davies, Anne-Laure Grillot, Zhan Shi, Cornelia J. Forster
  • Patent number: 6664891
    Abstract: A communications system comprises at least one first portable communications device (12) capable of wireless message transmission and at least one second portable communications device (10) capable of receiving such a message transmission. The first device (12) is arranged to broadcast a series of inquiry messages (60) each in the form of a plurality of predetermined data fields (INQ) arranged according to a first communications protocol, such as Bluetooth. For the delivery of additional data via broadcast, the first device (12) adds to each inquiry message prior to transmission an additional data field (BCD) carrying broadcast data, with the second portable device (10) receiving the transmitted inquiry messages and reading the broadcast data from the additional data field.
    Type: Grant
    Filed: June 11, 2001
    Date of Patent: December 16, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Robert J. Davies, Paul J. Rankin
  • Publication number: 20030215170
    Abstract: An electro-optic modulator structure for particular use in narrowband optical subcarrier systems. A traveling wave is established across the active region of the device, instead of a standing wave. This is accomplished through the use of a directional resonator structure that prevents reverse-traveling waves from being established within the resonator. Hence, the electric field is applied to the traveling optical wave in a similar fashion to a traveling-wave modulator, except that the traveling wave has a much greater amplitude due to the build-up of energy inside the resonator. Since the modulator is operated in a traveling-wave fashion, it can be tuned to operate at any frequency using tuning elements, regardless of the length of the active region. Furthermore, the microwave and optical signals can be velocity-matched to mitigate optical transit time effects that are normally associated with a resonant modulator utilizing a standing-wave electrode structure.
    Type: Application
    Filed: March 12, 2003
    Publication date: November 20, 2003
    Applicant: Telecommunications Research Laboratories
    Inventors: Sean V. Hum, Robert J. Davies, Michal Okoniewski
  • Patent number: 6638926
    Abstract: This invention provides novel pyrazole compounds that are useful as protein kinase inhibitors, especially as inhibitors of aurora-2 and GSK-3. The compounds may be used to treat abnormal physiological function leading to diseases such as cancer, diabetes and Alzheimer's disease.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: October 28, 2003
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Robert J. Davies, Pan Li, Jean-Damien Charrier, David Bebbington
  • Publication number: 20030199526
    Abstract: The present invention provides a compound of formula (I): 1
    Type: Application
    Filed: December 9, 2002
    Publication date: October 23, 2003
    Inventors: Deborah Choquette, Robert J. Davies, Marion W. Wannamaker
  • Publication number: 20030193002
    Abstract: A plant stand designed to be mounted on a railing of a structure, such as a deck, is provided. The plant stand includes a generally vertical frame having a proximal end connected to a base plate. A clamp connected to the base plate is designed to selectively clamp a railing of the structure between a body of the clamp and the base plate. A plurality of plant supports are coupled with the frame for supporting plants thereon. In first and second embodiments of the plant stand, the plant supports are spaced apart from and coupled with the frame via support arms. In the second embodiment, the support arms are adjustable by way of a plurality of brackets secured to legs of the frame.
    Type: Application
    Filed: May 1, 2003
    Publication date: October 16, 2003
    Inventor: Robert J. Davies
  • Patent number: 6557806
    Abstract: A plant stand designed to be mounted on a railing of a structure, such as a deck, is provided. The plant stand includes a generally vertical frame having a proximal end connected to a base plate. A clamp connected to the base plate is designed to selectively clamp a railing of the structure between a body of the clamp and the base plate. A plurality of plant supports are coupled with the frame for supporting plants thereon. In first and second embodiments of the plant stand, the plant supports are spaced apart from and coupled with the frame via support arms. In the second embodiment, the support arms are adjustable by way of a plurality of brackets secured to legs of the frame.
    Type: Grant
    Filed: April 10, 2001
    Date of Patent: May 6, 2003
    Inventor: Robert J. Davies
  • Publication number: 20030050064
    Abstract: A cellular radio system comprises a radio coverage area formed by a plurality of cells (C1,C2), each cell having at least one primary station (PS1,PS2) including a radio transceiver for communicating with a secondary station (SS1,SS2) when in its cell. The or each secondary station is able to roam within the radio coverage area. In order to facilitate call handover the secondary station informs the infrastructure (PS1, PS2, 10) of its velocity and the infrastructure uses knowledge of the velocity to make a decision regarding handing over a call-in-progress from one cell to another cell. The velocity information may be provided by a GPS receiver (18) carried by a vehicle in which the secondary station is located and the information is relayed to the secondary station by way of a short range radio system. The secondary station uses the cellular system to forward this information to the infrastructure.
    Type: Application
    Filed: August 1, 2002
    Publication date: March 13, 2003
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Robert J. Davies, Andrew T. Yule
  • Patent number: 6531474
    Abstract: The present invention relates to novel classes of compounds which are caspase inhibitors, in particular interleukin-1&bgr; converting enzyme (“ICE”) inhibitors. This invention also relates to pharmaceutical compositions comprising these compounds. The compounds and pharmaceutical compositions of this invention are particularly well suited for inhibiting caspase activity and consequently, may be advantageously used as agents against interleukin-1-(“IL-1”), apoptosis-, interferon-&ggr; inducing factor-(IGIF), or interferon-&ggr;-(“IFN-&ggr;”) mediated diseases, including inflammatory diseases, autoimmune diseases, destructive bone disorders, proliferative disorders, infectious diseases, and degenerative diseases.
    Type: Grant
    Filed: September 19, 2000
    Date of Patent: March 11, 2003
    Assignee: Vertex Pharmaceuticals Incorporated
    Inventors: Marion W. Wannamaker, Guy W. Bemis, Paul S. Charifson, David J. Lauffer, Michael D. Mullican, Mark A. Murcko, Keith P. Wilson, James W. Janetka, Robert J. Davies, Anne-Laure Grillot, Zhan Shi, Cornelia J. Forster
  • Publication number: 20030030479
    Abstract: A parallel-summation logarithmic amplifier is described that uses a novel topology of cascaded and parallel amplifiers to achieve extremely high bandwidth. Included in the topology is a unique delay matching scheme for logarithmic amplifiers that is amenable to fabrication in integrated circuit form. The result is flat group delay over broad frequency ranges and different power levels. The resulting log amplifier is suitable for radar applications and for use in high data rate fiber-optic networks. Also described is a unique design process that yields a set of amplifier gains that closely approximate a logarithm. Also described is the novel idea of using a parallel feedback amplifier (PFA) in piecewise-approximate logarithmic amplifiers. This innovation allows for the design of broadband amplifiers with significantly different gains and similar phase characteristics, which is extremely useful when designing high-frequency logarithmic amplifiers.
    Type: Application
    Filed: May 24, 2002
    Publication date: February 13, 2003
    Applicant: Telecommunications Research Laboratories.
    Inventors: Christopher D. Holdenried, James W. Haslett, John G. McRory, Robert J. Davies
  • Patent number: D483198
    Type: Grant
    Filed: May 2, 2002
    Date of Patent: December 9, 2003
    Inventor: Robert J. Davies