Patents by Inventor Rakesh Patel

Rakesh Patel 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: 7362833
    Abstract: Circuitry for locating the boundaries of bytes in a data stream is provided. The data stream typically has comma or header information that provides an indication of the byte boundaries. When circuitry detects this information, it can align the byte boundaries and thereby provide byte-aligned data to utilization circuitry (e.g., a programmable logic device). In accordance with this invention, circuitry can select different special characters for use in detecting the byte boundaries, where the special characters are different lengths. Circuitry aligns the byte boundaries based on the selected special character when enabled by a control signal. Once aligned, circuitry can provide a signal indicating which special character was used to align the boundaries. Another advantage of the invention is that it eliminates alignment problems associated with system latency. Circuitry automatically locks alignment to a first instance of a detected special character independent of an external control signal.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: April 22, 2008
    Assignee: Altera Corporation
    Inventors: Vinson Chan, Chong Lee, Rakesh Patel, Ramanand Venkata
  • Patent number: 7355449
    Abstract: Serial data transmitter circuitry on a PLD includes a number of features that enable the transmitter to support many different communication protocols under a wide range of circuit conditions. Examples of features that the transmitter may include are (1) multiple pre-emphasis circuits of selectable strength and polarity, (2) selectable VOD, (3) selectable slew rate, (4) calibratable termination, (5) selectable common mode voltage, and (6) electrical idle mode.
    Type: Grant
    Filed: February 1, 2006
    Date of Patent: April 8, 2008
    Assignee: Altera Corporation
    Inventors: Thungoc Tran, Sergey Yuryevich Shumarayev, Kazi Asaduzzaman, Wilson Wong, Mei Luo, Rakesh Patel
  • Publication number: 20080074143
    Abstract: A programmable logic integrated circuit device has a plurality of regions of programmable logic disposed on the device in a plurality of intersecting rows and columns of such regions. Interconnection resources (e.g., interconnection conductors, signal buffers/drivers, programmable connectors, etc.) are provided on the device for making programmable interconnections to, from, and/or between the regions. At least some of these interconnection resources are provided in two forms that are architecturally similar (e.g., with similar and substantially parallel routing) but that have significantly different signal propagation speed characteristics. For example, a major or larger portion of such dual-form interconnection resources may have what may be termed normal signal speed, while a smaller minor portion may have significantly faster signal speed. Secondary (e.g.
    Type: Application
    Filed: July 30, 2007
    Publication date: March 27, 2008
    Inventors: Tony Ngai, Bruce Pedersen, Sergey Shumarayev, James Schleicher, Wei-Jen Huang, Michael Hutton, Victor Maruri, Rakesh Patel, Peter Kazarian, Andrew Leaver, David Mendel, Jim Park
  • Patent number: 7343569
    Abstract: A skew-tolerant, glitch-free reset distribution apparatus and method are provided in an intellectual property (IP) block that supports a multi-channel input/output protocol. During reset mode, synchronizers are used to create more predictable timing, to pipeline the propagation delay, and to tolerate RC-induced skews of up to a clock period in routing a reset signal to all the channels and within the channels in an IP block. Two control signals, which are available from programmable logic resource core circuitry, are used to control the input of the reset signal into the IP block. Because the control signals are designed to be glitch-free, the reset signal is therefore also glitch-free, thus preventing the IP block from inadvertently transitioning into or out of reset mode.
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: March 11, 2008
    Assignee: Altera Corporation
    Inventors: John Lam, Arch Zaliznyak, Chong Lee, Rakesh Patel, Vinson Chan
  • Patent number: 7333570
    Abstract: A programmable logic device (“PLD”) is augmented with programmable clock data recover (“CDR”) circuitry to allow the PLD to communicate via any of a large number of CDR signaling protocols. The CDR circuitry may be integrated with the PLD, or it may be wholly or partly on a separate integrated circuit. The circuitry may be capable of CDR input, CDR output, or both. The CDR capability may be provided in combination with other non-CDR signaling capability such as non-CDR low voltage differential signaling (“LVDS”). The circuitry may be part of a larger system.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: February 19, 2008
    Assignee: Altera Corporation
    Inventors: Edward Aung, Henry Lui, Paul Butler, John Turner, Rakesh Patel, Chong Lee
  • Publication number: 20080031385
    Abstract: A programmable logic device (“PLD”) is augmented with programmable clock data recover (“CDR”) circuitry to allow the PLD to communicate via any of a large number of CDR signaling protocols. The CDR circuitry may be integrated with the PLD, or it may be wholly or partly on a separate integrated circuit. The circuitry may be capable of CDR input, CDR output, or both. The CDR capability may be provided in combination with other non-CDR signaling capability such as non-CDR low voltage differential signaling (“LVDS”). The circuitry may be part of a larger system.
    Type: Application
    Filed: April 25, 2007
    Publication date: February 7, 2008
    Applicant: Altera Corporation
    Inventors: Edward Aung, Henry Lui, Paul Butler, John Turner, Rakesh Patel, Chong Lee
  • Patent number: 7320802
    Abstract: The present invention is directed to fibrate compositions having improved pharmacokinetic profiles and reduced fed/fasted variability. The fibrate particles of the composition have an effective average particle size of less than about 2000 nm.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: January 22, 2008
    Assignees: Elan Pharma International, Ltd., Fournier Laboratories Ireland Ltd.
    Inventors: Tuula Ryde, Evan E. Gustow, Stephen B. Ruddy, Rajeev Jain, Rakesh Patel, Michael John Wilkins
  • Patent number: 7317332
    Abstract: A programmable logic integrated circuit device has a plurality of regions of programmable logic disposed on the device in a plurality of intersecting rows and columns of such regions. Interconnection resources (e.g., interconnection conductors, signal buffers/drivers, programmable connectors, etc.) are provided on the device for making programmable interconnections to, from, and/or between the regions. At least some of these interconnection resources are provided in two forms that are architecturally similar (e.g., with similar and substantially parallel routing) but that have significantly different signal propagation speed characteristics. For example, a major or larger portion of such dual-form interconnection resources may have what may be termed normal signal speed, while a smaller minor portion may have significantly faster signal speed. Secondary (e.g.
    Type: Grant
    Filed: November 7, 2005
    Date of Patent: January 8, 2008
    Assignee: Altera Corporation
    Inventors: Tony Ngai, Bruce Pedersen, Sergey Shumarayev, James Schleicher, Wei-Jen Huang, Victor Maruri, Rakesh Patel
  • Publication number: 20070298115
    Abstract: The present invention is directed to fibrate compositions having improved pharmacokinetic profiles and reduced fed/fasted variability. The fibrate particles of the composition have an effective average particle size of less than about 2000 nm.
    Type: Application
    Filed: May 23, 2007
    Publication date: December 27, 2007
    Inventors: Tuula Ryde, Evan Gustow, Stephen Ruddy, Rajeev Jain, Rakesh Patel, Michael Wilkins
  • Publication number: 20070264348
    Abstract: The present invention is directed to fibrate compositions having improved pharmacokinetic profiles and reduced fed/fasted variability. The fibrate particles of the composition have an effective average particle size of less than about 2000 nm.
    Type: Application
    Filed: February 26, 2007
    Publication date: November 15, 2007
    Inventors: Tuula Ryde, Evan Gustow, Rajeev Jain, Rakesh Patel, Michael Wilkins
  • Patent number: 7292065
    Abstract: Enhanced passgate structures for use in low-voltage systems are presented in which the operational speed of the passgate structures is maximized, while minimizing leakage current when the structure is turned “OFF.” In one arrangement, the VT of the pass-gate structures is increased relative to the VT of other transistors fabricated according to a particular process dimension. In addition, a passgate activation voltage is applied to the passgate structures such that the passgate activation voltage is higher in voltage than a nominal voltage being supplied to circuitry other than the passgate structures.
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: November 6, 2007
    Assignee: Altera Corporation
    Inventors: Henry Y. Lui, Malik Kabani, Rakesh Patel, Tim Tri Hoang
  • Publication number: 20070248087
    Abstract: A plurality of systems for routing signals are described. The system includes a cross point switch that can couple any one of a plurality of input terminals to a plurality of output processor terminals. Signals received at the input terminals are coupled to corresponding output terminals and are processed by output modules. The resulting processed signals are provided at output terminals. In some embodiments, one or more input modules are provided to process input signal prior to routing through the cross-point switch.
    Type: Application
    Filed: April 23, 2007
    Publication date: October 25, 2007
    Inventors: ROMOLO MAGARELLI, Rakesh Patel, Eric Fankhauser, Daniel Turow
  • Publication number: 20070244315
    Abstract: The invention relates to processes for preparing cefdinir via its potassium and cesium salts.
    Type: Application
    Filed: October 31, 2006
    Publication date: October 18, 2007
    Inventors: Vinod Kansal, Dhirenkumar Mistry, Saurabh Pandey, Rakesh Patel, Shlomit Wizel
  • Publication number: 20070237186
    Abstract: High-speed serial data transceiver circuitry on a programmable logic device (“PLD”) includes some channels that are able to operate at data rates up to a first, relatively low maximum data rate, and other channels that are able to operate at data rates up to a second, relatively high maximum data rate. The relatively low-speed channels are served by relatively low-speed phase locked loop (“PLL”) circuitry, and have other circuit components that are typically needed for handling data that is transmitted at relatively low data rates. The relatively high-speed channels are served by relatively high-speed PLLs, and have other circuit components that are typically needed for handling data that is transmitted at relatively high data rates.
    Type: Application
    Filed: April 11, 2006
    Publication date: October 11, 2007
    Inventors: Sergey Shumarayev, Bill Bereza, Chong Lee, Rakesh Patel, Wilson Wong
  • Patent number: 7276249
    Abstract: The present invention is directed to fibrate compositions having improved pharmacokinetic profiles and reduced fed/fasted variability. The fibrate particles of the composition have an effective average particle size of less than about 2000 nm.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: October 2, 2007
    Assignees: Elan Pharma International, Ltd., Fournier Laboratories Ireland Ltd.
    Inventors: Tuula Ryde, Evan E. Gustow, Stephen B. Ruddy, Rajeev Jain, Rakesh Patel, Michael John Wilkins
  • Patent number: 7272677
    Abstract: A serial interface for a programmable logic device substantially eliminates skew across multiple channels both in the receiver and in the transmitter. Even when the channels are independent (e.g., are in different quads), skew is substantially eliminated by monitoring to determine when all channels have reached their active states (i.e., in the case of receiver channels when all channels have achieved byte alignment and have received an alignment character, and in the case of transmitter channels when all transmit PLLs have locked), and only then allowing data to flow between the serial and parallel domains.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: September 18, 2007
    Assignee: Altera Corporation
    Inventors: Ramanand Venkata, Chong H Lee, Rakesh Patel
  • Patent number: 7262635
    Abstract: A programmable logic device has many regions of programmable logic, together with relatively general-purpose, programmable, interconnection resources that can be used to make interconnections between virtually any of the logic regions. In addition, various types of more local interconnection resources are associated with each logic region for facilitating the making of interconnections between adjacent or nearby logic regions without the need to use the general-purpose interconnection resources for those interconnections. The local interconnection resources support flexible clustering of logic regions via relatively direct and therefore high-speed interconnections, preferably in both horizontal and vertical directions in the typically two-dimensional array of logic regions. The logic region clustering options provided by the local interconnection resources are preferably boundary-less or substantially boundary-less within the array of logic regions.
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: August 28, 2007
    Assignee: Altera Corporation
    Inventors: James Schleicher, Jim Park, Sergey Shumarayev, Bruce Pedersen, Tony Ngai, Wei-Jen Huang, Victor Maruri, Rakesh Patel
  • Publication number: 20070188189
    Abstract: In a programmable logic device, some or all of the parallel interconnect resources are replaced by serial interconnect resources within the device. Some or all of the functional blocks on the device are supplemented with serial interfaces. Although this makes the functional blocks more complex, it allows a significant reduction in the area consumed by interconnect resources. This translates into a significant reduction in device power consumption. The serial interfaces may operate synchronously from a global device clock (such as a PLL). In some cases, serial interfaces that are provided in the input/output blocks for external signalling can be omitted because the serial interfaces in the functional blocks can take over the external serial interface function as well, although in those cases the serial interfaces in the functional blocks would have to be more complex because they would have to be able to operate asynchronously with external devices.
    Type: Application
    Filed: October 5, 2006
    Publication date: August 16, 2007
    Applicant: ALTERA CORPORATION
    Inventors: Ramanand Venkata, Rakesh Patel, Chong Lee
  • Publication number: 20070191331
    Abstract: The present invention encompasses the solid state chemistry of cefdinir potassium salt.
    Type: Application
    Filed: October 31, 2006
    Publication date: August 16, 2007
    Inventors: Vinod Kansal, Dhirenkumar Mistry, Saurabh Pandey, Rakesh Patel, Shlomit Wizel, Jean Hildesheim
  • Publication number: 20070191602
    Abstract: Provided is the cesium salt of cefdinir, processes for its preparation and its use in the preparation of cefdinir.
    Type: Application
    Filed: October 31, 2006
    Publication date: August 16, 2007
    Inventors: Vinod Kansal, Dhirenkumar Mistry, Saurabh Pandey, Rakesh Patel