Patents Represented by Attorney Van Pelt & Yi LLP
  • Patent number: 7724651
    Abstract: Providing a network service is disclosed. A data associated with the service is received. It is determined whether a local context associated with the service is in an active state with respect to the service. The data is redirected to another chassis, via an inter-chassis backup connection, if it is determined that the local context is not in an active state with respect to the service.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: May 25, 2010
    Assignee: Alcatel Lucent
    Inventors: Benjamin Washam, Satyam Sinha, Bassem M. Abdouni, Praveen Muley, Tiberiu Grigoriu, Stephen Tan, Boovaraghavan Ranganathan
  • Patent number: 6934461
    Abstract: The invention enables “low attention recording,” i.e., recording that need not appreciably affect interaction of a recorder (i.e., a person in control of a recording unit according to the invention) or others with the environment in which the recording is taking place. The low attention recording enabled by the invention can be particularly advantageously employed in “social recording,” i.e., recording in which multiple participants in an event are recording the event. As described in more detail below, advantageous aspects of the invention can be provided by a small, lightweight, wearable recording unit.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: August 23, 2005
    Assignee: Interval Research Corporation
    Inventors: Henry B. Strub, David A. Burgess, Kimberly H. Johnson, Jonathan R. Cohen, David P. Reed
  • Patent number: 6907533
    Abstract: A system and method are disclosed for providing security for a computer network. Content sets are generated for a computer associated with the network. It is determined whether a user should be routed to the generated content sets. If it is determined that the user should be routed to the generated content sets, a generated content set is selected and the user is so routed. Various actions and events may be recorded in a logfile, and the logfile is analyzed using regular expressions.
    Type: Grant
    Filed: April 23, 2001
    Date of Patent: June 14, 2005
    Assignee: Symantec Corporation
    Inventors: Stephen Sorkin, Michael Lyle, Robert F. Ross, James R. Maricondo
  • Patent number: 6900699
    Abstract: A phase synchronous multiple LC tank oscillator includes a plurality of oscillator stages configured to oscillate synchronously. The phase of each of the plurality of oscillator stages is substantially the same.
    Type: Grant
    Filed: November 14, 2001
    Date of Patent: May 31, 2005
    Assignee: Berkana Wireless, Inc.
    Inventor: Beomsup Kim
  • Patent number: 6885323
    Abstract: A system and method are disclosed for correcting for output distortion of an analog to digital converter, comprising: estimating the output distortion, providing an estimated distortion, and combining an output of the analog to digital converter with the estimated distortion to compensate for the output distortion. The compensating module for correcting output distortion of an analog to digital converter comprises a calibration module configured to estimate the output distortion and a combiner configured to combine an output of the analog to digital converter with the estimated distortion to compensate the output distortion.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: April 26, 2005
    Assignee: Optichron, Inc.
    Inventor: Roy G. Batruni
  • Patent number: 6882187
    Abstract: A line driver and a method for driving a line are disclosed. The line driver includes a first current device configured to initiate a change in the state of the line and a second current device configured to substantially complete the change. The first current device provides a first current and the second current device provides a second current that is smaller than the first current.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: April 19, 2005
    Assignee: Silego Technology, Inc.
    Inventors: Hyunbae Kim, Chen Yu Wang, Kuang-Yu Chen
  • Patent number: 6880171
    Abstract: The invention facilitates and enhances review of a body of information, such as a set of audio, video and text data or some combination thereof, enabling the body of information to be quickly reviewed so to obtain an overview of the content of the body of information and allowing flexibility in reviewing. In on embodiment, the content is acquired from a first set of one or more sources, i.e. TV news, and text news stories are acquired from a second set of one or more sources, i.e. On-line services. The invention enables the user to access the information randomly, thereby enhancing the speed of accessing/locating among news stories/programs pertaining particular subject. Additionally, the user while observing a particular news story, the invention can identify and display related news stories.
    Type: Grant
    Filed: June 25, 1999
    Date of Patent: April 12, 2005
    Assignee: Interval Research Corporation
    Inventors: Subutai Ahmad, Neal A. Bhadkamkar, Steve B. Cousins, Emanuel E. Farber, Paul A. Freiberger, Christopher D. Horner, Philippe P. Piernot, Brygg A. Ullmer
  • Patent number: 6856191
    Abstract: A system and method are disclosed for a nonlinear filter having a nonlinear transfer function. The nonlinear filter comprises a plurality of linear filters each having a filter output, a plurality of nonlinear elements each connected to one of the plurality of linear filters, and a combination network connected to the plurality of nonlinear elements. The nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs, and the combination network combines the nonlinear outputs.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: February 15, 2005
    Assignee: Optichron, Inc.
    Inventor: Roy G. Bartuni
  • Patent number: 6844761
    Abstract: A system and method are disclosed for providing a DLL with false lock protector to avoid false lock and ensure accurate lock. The false lock protector operates when the initial delay time between signals from an input reference clock and an output clock exceeds the lock range during operation of the DLL. The DLL with false lock protector includes a reference clock, a delay line composed of several delay cells connected in series, a phase detector, comparator for comparing phases of signals from the reference and output clocks, a determinator and a controller for controlling the delay of the delay line.
    Type: Grant
    Filed: May 12, 2003
    Date of Patent: January 18, 2005
    Assignee: Berkana Wireless, Inc.
    Inventors: Sang Jin Byun, Beomsup Kim, Chan-Hong Park
  • Patent number: 6845374
    Abstract: Network system provides a real-time adaptive recommendation set of documents with a high statistical measure of relevancy to the requestor device. The recommendation set is optimized based on analyzing text of documents of the interest set, categorizing these documents into clusters, extracting keywords representing the themes or concepts of documents in the clusters, and filtering a population of eligible documents accessible to the system utilizing site and or Internet-wide search engines. The system is either automatically or manually invoked and it develops and presents the recommendation set in real-time. The recommendation set may be presented as a greeting, notification, alert, HTML fragment, fax, voicemail, or automatic classification or routing of customer e-mail, personal e-mail, job postings, and offers for sale or exchange.
    Type: Grant
    Filed: November 27, 2000
    Date of Patent: January 18, 2005
    Assignee: Mailfrontier, Inc
    Inventors: Jonathan James Oliver, Wray Lindsay Buntine, George Roumeliotis
  • Patent number: 6845452
    Abstract: A system and method are disclosed for providing controlled access via an external network to a resource residing on an internal network. An external request addressed to a first computer system associated with the internal network is received at the first computer system via the external network. The external request comprises a request from a requesting party for response data from a second computer system associated with the internal network. At least part of the content of the external request is analyzed at the first computer system to determine whether the request is authorized. If it is determined that the request is authorized, the request is processed.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: January 18, 2005
    Assignee: Reactivity, Inc.
    Inventors: Brian J. Roddy, Michael Hanson, John O. Lilly, III
  • Patent number: 6842735
    Abstract: A data-compressed audio waveform is temporally modified without requiring complete decompression of the audio signal. Packets of compressed audio data are first unpacked, to remove scaling that was applied in the formation of the packets. The unpacked data is then temporally modified, using one of a number of different approaches. This modification takes place while the audio information remains in a data-compressed format. New packets are then assembled from the modified data, to produce a data-compressed output stream that can be subsequently processed in a conventional manner to reproduce the desired sound. The assembly of the new packets employs a technique for inferring an auditory model from the original packets, to requantize the data in the output packets.
    Type: Grant
    Filed: September 13, 2000
    Date of Patent: January 11, 2005
    Assignee: Interval Research Corporation
    Inventors: Michele M. Covell, Malcolm Slaney, Arthur Rothstein
  • Patent number: 6839438
    Abstract: An audio rendering system and method are disclosed. The audio rendering system generally comprises front and rear signal modifiers configured to receive a plurality of audio signals representing a plurality of sources of aural information and location information representing apparent location for the source of said aural information. A gain is applied to the signals representative of the location information. A front signal modifier includes a plurality of head-related transfer functions filters and a rear signal modifier includes a plurality of filters configured to approximate head-related transfer function filters. The system further includes front speakers comprising a left front speaker and right front speaker configured to receive signals from the front signal modifier and generate a signal to a listener. At least one rear speaker is configured to receive signals from the rear signal modifier and generate a signal to the listener to offset frontward bias created by the front speakers.
    Type: Grant
    Filed: August 2, 2000
    Date of Patent: January 4, 2005
    Assignee: Creative Technology, Ltd
    Inventors: Edward Riegelsberger, Martin Walsh
  • Patent number: 6838872
    Abstract: A system and method for detecting the position of an object are disclosed. A position detection system for locating an object including a resonator comprises an array of parallel conductors responsive to the magnetic field from the resonator, and a plurality of receivers each associated with a parallel conductor. The array of parallel conductors is configured to locate the object along a measurement path. The array of parallel conductors is orthogonal to the measurement path. The system further comprises a plurality of drivers each associated with a parallel conductor and configured to drive current through to produce an energizing field. The array of parallel conductors is provided with sinusoidally varying spacing and driven with sinusoidally varying current. In another embodiment, the array of parallel conductors is provided with constant spacing, and the receivers are configured with gain factors to produce reception similar to reception by sinusoidally spaced conductors.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: January 4, 2005
    Assignee: Interval Research Corporation
    Inventors: Lee Felsenstein, Steven E. Saunders
  • Patent number: 6836193
    Abstract: A system and method are disclosed for generating a variable frequency output. A voltage controlled oscillator (VCO) is used. The VCO comprises a plurality of aggregate capacitor circuits, wherein each of the aggregate capacitor circuits has a collective capacitance, at least two of the collective capacitances have different values, and each of the aggregate capacitor circuits includes one or more individual capacitors wherein each of the individual capacitors are substantially the same size. The VCO further comprises a plurality of switches configured to select one or more aggregate capacitor circuits from among the plurality of aggregate capacitor circuits to form a discretely variable capacitor network having a discretely variable capacitance, wherein the discretely variable capacitor network is configured to cause an oscillator to generate a variable frequency as a result of the discretely variable capacitance.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: December 28, 2004
    Assignee: Berkana Wireless, Inc.
    Inventors: Beomsup Kim, Cormac S. Conroy
  • Patent number: 6826697
    Abstract: A system and method are disclosed for detecting intrusions in a host system on a network. The intrusion detection system comprises an analysis engine configured to use continuations and apply forward- and backward-chaining using rules. Also provided are sensors, which communicate with the analysis engine using a meta-protocol in which the data packet comprises a 4-tuple. A configuration discovery mechanism locates host system files and communicates the locations to the analysis engine. A file processing mechanism matches contents of a deleted file to a directory or filename, and a directory processing mechanism extracts deallocated directory entries from a directory, creating a partial ordering of the entries. A signature checking mechanism computes the signature of a file and compares it to previously computed signatures. A buffer overflow attack detector compares access times of commands and their associated files.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: November 30, 2004
    Assignee: Symantec Corporation
    Inventor: Douglas B. Moran
  • Patent number: 6825875
    Abstract: The invention enables “low attention recording,” i.e., recording that need not appreciably affect interaction of a recorder (i.e., a person in control of a recording unit according to the invention) or others with the environment in which the recording is taking place. The low attention recording enabled by the invention can be particularly advantageously employed in “social recording,” i.e., recording in which multiple participants in an event are recording the event. As described in more detail below, advantageous aspects of the invention can be provided by a small, lightweight, wearable recording unit. In particular, a “hybrid recording unit” having the above-described characteristics and advantages is constructed by adding to a portable video recorder (e.g., camcorder, portable dockable videotape recorder (VTR)) one or more devices (an “auxiliary device”) that provide additional functionality to the portable video recorder.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: November 30, 2004
    Assignee: Interval Research Corporation
    Inventors: Henry B. Strub, David A. Burgess, Kimberly H. Johnson, Jonathan R. Cohen, David P. Reed
  • Patent number: 6820082
    Abstract: A rule-based database security system and method are disclosed. A method for processing requests from a user to perform an action with respect to data stored in an electronic database includes defining a plurality of user defined rules containing security constraints for accessing the data and receiving a request at a user interface. The request is transferred from the user interface to a rule engine and the plurality of rules are applied to the request to determine if the request passes the security constraints. The method further includes modifying the request if required to meet the security constraints. The data is accessed to perform the request if the request meets the security constraints.
    Type: Grant
    Filed: April 3, 2000
    Date of Patent: November 16, 2004
    Assignee: Allegis Corporation
    Inventors: William R. Cook, Martin R. Gannholm
  • Patent number: 6810093
    Abstract: A system and method are disclosed for recovering a current data symbol that is part of a sequence of data symbols from a received signal. Recovering the current data symbol includes determining a set of candidate current data symbols from a set of possible current data symbols wherein the set of candidate current data symbols is a subset of the possible current data symbols that does not include all of the possible current data symbols; determining a set of candidate data symbol sequences wherein each candidate data symbol sequence includes one of the candidate current data symbols; and selecting a recovered data symbol sequence that matches the received signal from the set of candidate data symbol sequences.
    Type: Grant
    Filed: May 3, 2002
    Date of Patent: October 26, 2004
    Assignee: Atheros Communications, Inc.
    Inventor: Chaohuang Zeng
  • Patent number: 6806779
    Abstract: A system and method are disclosed for generating a synthesized signal. A frequency synthesizer is used. The frequency synthesizer includes an input interface configured to receive an input signal having a reference frequency; a phase locked loop (PLL) coupled to the input interface, having a fractional N configuration and comprises a voltage controlled oscillator; wherein the voltage controlled oscillator is configured to generate the synthesized signal; and the voltage controlled oscillator includes an on-chip inductor.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: October 19, 2004
    Assignee: Berkana Wireless, Inc.
    Inventors: Beomsup Kim, Cormac S. Conroy