Patents Represented by Attorney, Agent or Law Firm Hayes and Boone, LLP
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Patent number: 8289061Abstract: A method is provided for improving clock recovery signal jitter in digital communication based on a phase adjustment technique in a phase interpolation. A clock signal is expressed as the combination of two sinusoidal signals. The phase interpolating process determines the amplitude of the first sinusoidal signal, and the amplitude of the second sinusoidal signal that is 90° out of phase from the first sinusoidal signal. The clock signal is then formed by combining first sinusoidal signal with the second sinusoidal signal by choosing the first and second amplitude such that the amplitude of the clock signal is substantially a constant. Modulation of the clock signal amplitude is significantly improved by the disclosed technique over the conventional technique when the sum of the first and second amplitudes of the two sinusoidal functions is kept a constant.Type: GrantFiled: September 29, 2009Date of Patent: October 16, 2012Assignee: Integrated Device Technology, Inc.Inventors: Hui Wang, Lixin Jiang
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Patent number: 8279007Abstract: A switch circuit is provided. The switch circuit may include a first transistor having a source terminal to accept an input signal, a drain terminal to provide an output signal, and a gate; a power supply providing a gate voltage. The switch circuit may also include a circuit to couple a switch signal to the gate, wherein the circuit turns the first transistor ‘off’ for all values of the input signal when the switch signal is ‘low.’ A programmable gain amplifier (PGA) is also provided. The PGA may include an input stage having an input node to couple an input signal, and an output node to provide a gate signal, at least a first gain stage including a resistor and a switch circuit as above. A differential gain amplifier may be included to provide an output signal from the gain signal.Type: GrantFiled: October 21, 2010Date of Patent: October 2, 2012Assignee: Integrated Device Technology, inc.Inventors: ChangMing Wei, Yu Zhang, Lixin Jiang, JinFu Chen, Jeffrey G. Barrow
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Patent number: 8248383Abstract: A touch screen includes a plurality of single-layer ITO bars having a substantially rectangular shape and arranged in parallel to each other in order to detect touches on the touch screen. The location of a touch on the touch screen in the direction along an ITO bar is determined by applying a signal on one end of the ITO bar and measuring the change in the amplitude and the delay of the signal on the opposite end of the ITO bar. Such application and measurement of the signal can be repeated with the application of the signal occurring on the opposite end of the ITO bar and the measurement of the signal occurring on said one end of the ITO bar, in order to enhance the accuracy of the measurement.Type: GrantFiled: April 21, 2009Date of Patent: August 21, 2012Assignee: Integrated Device Technology, Inc.Inventors: Christopher William Dews, Charles Henry Seaborg, Jr.
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Patent number: 8237624Abstract: A serial display interface such as the VESA-Display Port interface is expanded to support daisy chained coupling of one display monitor to the next. Each daisy chain wise connectable display monitor has a local daisy chain transceiver device associated with it where the local transceiver device selectively picks off passing through video data streams in response to embedded MDID identification signals and forwards the selectively picked off data to the local monitor. The local transceiver device also relays the passing through video data streams on to more downstream devices of the daisy chain. In one embodiment, the daisy chain wise connectable display monitors are hot-pluggable and unpluggable.Type: GrantFiled: May 6, 2008Date of Patent: August 7, 2012Assignee: Integrated Device Technology, Inc.Inventors: Xuming Henry Zeng, Jechan Kim
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Patent number: 8217689Abstract: A method and a circuit are described for recovery of video clocks for a DisplayPort receiver. The disclosure includes two clock dividers, a direct digital synthesis (DDS), a fixed multiplier Phase-Locked Loop (PLL) on a DisplayPort video system. A DisplayPort receiver link clock is divided to a lower frequency as the input of the DDS which can lower the performance requirement on a DDS circuit. The output from a time stamp value indirectly controls a direct digital synthesis device, which then drives a PLL to generate the recovery clock signal. The technique is suitable for implementation on an integrated circuit and Field Programmable Gate array system.Type: GrantFiled: January 19, 2010Date of Patent: July 10, 2012Assignee: Integrated Device Technology, Inc.Inventors: Lu Yang, Sibing Wang, Xiaoqian Zhang
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Patent number: 8208147Abstract: A method of high-speed processing and monitoring of a product, such as a pharmaceutical powder or tablet, comprises: moving the product (C) past an inspection station; illuminating at least a portion of the product with light; spectrally filtering a first portion of light carrying information about the product, o.g., transmitted or reflected light, by passing said first portion through at least one multivariate optical element (148) and detecting said filtered light with a first detector (152), —detecting a deflected second portion of said light with a second detector (156); and determining at least one selected property of the product based on the detector outputs.Type: GrantFiled: March 10, 2006Date of Patent: June 26, 2012Assignee: Halliburton Energy Services, Inc.Inventors: Michael L. Myrick, Robert P. Freese, Ryan J. Priore, John C. Blackburn, Jonathan H. James, David L. Perkins
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Patent number: 8179372Abstract: A system and method for efficient computation in the course of locating a position on the face of a touch-screen-equipped display device by limiting the amount of computations to weighted vectors within a range substantially less than the entire range of data input from the touch screen sensors.Type: GrantFiled: September 29, 2008Date of Patent: May 15, 2012Assignee: Integrated Device Technology, Inc.Inventors: Cary L. Delano, Arun Jayaraman
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Patent number: 8095707Abstract: A method and apparatus for synchronizing I/O peripherals with a CPU in an embedded system is discussed. The method involves receiving an address from the CPU in response to a read and/or write access, translating the address received from the CPU to identify a I/O peripheral to be accessed, disabling the operation of the CPU and synchronizing a memory from the CPU clock domain to the clock domain of the identified I/O peripheral. Upon completion of the read/write access, the identified I/O peripheral sends an acknowledgment, the memory is then synchronized from the clock domain of the I/O peripheral to the CPU clock domain and the operation of the CPU is then enabled. In another embodiment, if the acknowledgement from the identified I/O peripheral is not received within a predefined time duration, reserved data is sent to the CPU and the operation/access can be restarted.Type: GrantFiled: August 19, 2008Date of Patent: January 10, 2012Assignee: Integrated Device Technology, inc.Inventors: Xiaoqian Zhang, Zhiyong Guan, Qi Li
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Patent number: 8093930Abstract: A divider can include a phase selection circuit that switches between a plurality of phase-separated clock signals in response to a fractional control signal to form a selected clock signal, the selected clock signal being utilized to generate a second clock signal; and a counter that receives the second clock signal and generates the fractional control signal and a transition control signal, the transition control signal indicating when the second clock signal should switch states in response to a transition of the selected clock signal, the counter generating a feed-back clock signal.Type: GrantFiled: March 19, 2008Date of Patent: January 10, 2012Assignee: Integrated Device Technology, incInventor: Juan Qiao
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Patent number: 8094504Abstract: A buffered DRAM that can be utilized in a DIMM or RDIMM package to reduce the load on the data lines connected to the package is presented. A buffered DRAM can include a DRAM memory cell; and a buffer coupled to receive data lines and strobe signals, the buffer further coupled to receive address and command signals. If data access is directed to a second DRAM, the buffer buffers the data and strobe signals for access by the second DRAM. If data access is directed to the buffered DRAM the buffer buffers the data and strobe signals for access by the DRAM memory cell.Type: GrantFiled: January 4, 2008Date of Patent: January 10, 2012Assignee: Integrated Device Technology inc.Inventor: John Smolka
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Patent number: 8085070Abstract: A novel solution that combines the technologies of fractional divider and phase selection is provided to implement over-clocking for CPU PLL in PC clock generator with a set resolution that is independent of the clock frequency.Type: GrantFiled: December 18, 2008Date of Patent: December 27, 2011Assignee: Integrated Device Technology inc.Inventors: Qichang Wu, Shuo Liu, Juan Qiao
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Patent number: 8041552Abstract: A method of modeling the output drivers in an integrated circuit, for example a serializer/deserializer circuit, is provided. In accordance with embodiments of the invention, at least one parameter of the circuit is physically measured and a behavioral model utilizing that parameter is constructed. The behavioral model can then be utilized to predict the behavior of the integrated circuit output drivers.Type: GrantFiled: April 10, 2007Date of Patent: October 18, 2011Assignee: Intergrated Device Technology, Inc.Inventor: David J. Pilling
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Patent number: 8030414Abstract: The invention relates to novel polymers or oligomers containing at least sulfinate groups (P—(SO2)nX, X=1-(n=1), 2-(n=2) or 3-(n=3) valent metal cation or H+ or ammonium ion NR4+ where R=alkyl, aryl, H), which are obtained by completely or partially reducing polymers or oligomers containing at least SO2Y-groups (Y?F, Cl, Br, I, OR, NR2 (R=alkyl and/or aryl and/or H), N-imidazolyl, N-pyrazolyl) by means of suitable reducing agents in a suspension or in a solution form. Polymer and polymer(blend)membranes which are obtained by further reacting the received sulfinated polymers, especially by alkylation of the sulfinate groups with mono- di- or oligo functional electrophiles. The invention further relates to methods for producing the sulfinated polymers and for further reacting the sulfinated polymers with electrophiles by S-alkylation.Type: GrantFiled: November 26, 2008Date of Patent: October 4, 2011Inventors: Thomas Haring, Jochen Kerres, Wei Zhang
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Patent number: 8025530Abstract: A method and apparatus involve: configuring a wall portion to have an opening therethrough and to have a first annular surface extending around the opening; supporting on a circuit board an electrical connector having a plurality of electrical contacts and having a second annular surface; and resisting fluid flow from one side of the wall portion to an opposite side thereof through the opening, including compressing between the first and second annular surfaces a seal ring having third and fourth annular surfaces that respectively engage the first and second annular surfaces, the electrical contacts each having a portion that is accessible through the opening.Type: GrantFiled: July 10, 2009Date of Patent: September 27, 2011Assignee: Savi Technology, Inc.Inventor: Sergei Abramov
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Patent number: 7994760Abstract: A boost regulator system for regulating one or more output voltages includes, a first pump element coupled to receive a first input voltage, a first switching device coupled to the first pump element, the first switching device causing a finite amount of energy to be stored in the first pump element in response to a first control signal. The system further includes, a first capacitor coupled to the first pump element and the first switching device, the first capacitor storing the finite amount of energy and generating a first output voltage in response to the finite amount of energy. A boost controller (BC) coupled to receive the first output voltage, the boost controller further configured to regulate the first output voltage by generating the first control signal.Type: GrantFiled: June 12, 2009Date of Patent: August 9, 2011Assignee: Integrated Device Technologies, Inc.Inventor: Dimitry Goder
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Patent number: 7995698Abstract: A novel method and system for clock and data recovery in high speed serial transceiver applications allowing for fast bit lock acquisition and small data tracking error is presented. The clock and data recovery method utilizes a variable bandwidth loop filter to generate a phase adjustment signal used by a phase interpolator in generating a clock signal at the same frequency and phase as the incoming digital data stream. The loop filter bandwidth may be adjusted to correspond with a plurality of clock and data recovery operating modes. In particular, the filter bandwidth may be set to either a high or a low value depending on whether the phase difference between the recovered clock signal and the incoming digital data stream is above or below a programmed threshold value.Type: GrantFiled: September 28, 2007Date of Patent: August 9, 2011Assignee: Integrated Device Technology, Inc.Inventors: Xin Liu, Liang Zhang, Yong Wang
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Patent number: 7989541Abstract: A synthetic-rubber-based composition that consists of a low-molecular-weight rubber selected from polybutadiene comprising about 75% to about 92% cis-1,4 units, sulfur, a vulcanization accelerator, and an active filler wherein the sulfur, accelerator, and active filler are each present in the form of powder having a particular particle-size range. Additionally, this composition may be used to form coatings and rubber concretes.Type: GrantFiled: December 4, 2008Date of Patent: August 2, 2011Assignees: Nanotech Industries, Inc., Polymate, Ltd.Inventor: Oleg Figovsky
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Patent number: 7961461Abstract: A media apparatus includes a media bay having a media module slot. A security port is provided in the media bay adjacent the media module slot. A security fastener is provided in the media bay and is accessible via the security port. A security bar is movable between a first position wherein a first portion of the security bar opens the security port and exposes the security fastener, and a second position wherein the first portion closes the security port and conceals the security fastener. A lock plunger port is provided in the media bay adjacent a second portion of the security bar.Type: GrantFiled: September 4, 2009Date of Patent: June 14, 2011Assignee: Dell Products L.P.Inventors: Teodros Mesfin, David Gary Methven
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Patent number: 7926054Abstract: A system, method, and computer-readable medium for instantiating a virtual machine on a computer by way of a physical peripheral device is provided. A virtual machine image may be composed on a portable memory device, such as a USB-flash memory device. Insertion of the physical device in a peripheral terminal is detected by a host function or module, and the physical device is evaluated to determine whether a virtual machine is defined thereby. In the event that the physical device includes a virtual machine image, the host reads the virtual machine image from the physical device and allocates a virtual machine per the read virtual machine image.Type: GrantFiled: March 3, 2006Date of Patent: April 12, 2011Assignee: Novell, Inc.Inventors: Kelly Sonderegger, Ryan Partridge
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Patent number: 7906149Abstract: A method for treating oleoresin induced allergic dermatitis by topically contacting an affected area with a therapeutically effective amount of one or more biopolymers for a sufficient amount of time to enable the one or more biopolymers to have an effect and removing the one or more biopolymers from the affected area. The oleoresin can be urushiol, isosolenopsin A, or a combination thereof. The one or more biopolymer can be albumin. The one or more biopolymers can provide a localized anti-inflammatory effect.Type: GrantFiled: May 25, 2007Date of Patent: March 15, 2011Assignee: Boval Company, L.P.Inventor: Cody L. Yarborough