Patents by Inventor Bijan Jalali

Bijan Jalali 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: 8044851
    Abstract: A method of multipath error suppression in a satellite navigation receiver, including steps of navigation satellites signals searching, receiving and processing complex signals from each satellite, tracking found signals with a following-up open loop and determining coordinates, receiver velocity and exact time based on measurements of direct and reflected signal delay and Doppler frequency, the method including: forming, on the basis of navigation parameters, a two-dimensional accumulated power grid, calculating single-path signal corrections using the centered accumulated power grid determining, whether a multipath is presented, and performing, in case of positive result of this determination, improvement of corrections using weights, wherein, performing improvement of corrections using weights is carried out by forming a likelihood function on the basis of a centered accumulated powers vector, and correction is performed according to the found likelihood function global maximum.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: October 25, 2011
    Assignees: MStar Semiconductor, Inc., MStar Software R&D (Shenzhen) Ltd., MStar France SAS, MStar Semiconductor, Inc.
    Inventors: Mikhail Kholostov, Alexander Fedotov, Nikolay Mikhaylov, Bijan Jalali
  • Patent number: 7999731
    Abstract: A GPS data recording apparatus includes a storage device and a processing circuit coupled to the storage device. The processing circuit comprises: a sampling module, for sampling a GPS data; and a packet processor, for packetizing the sampled GPS data to generate a data packet to be stored in the storage device, and for unpacketizing the stored data packet from the storage device if necessary. According to present invention, GPS data can be recorded and be replayed as necessary.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: August 16, 2011
    Assignee: MStar Semiconductor, Inc.
    Inventors: Ping-Hsin Kan, Chun-Ming Huang, Sergey Pospelov, Andrey Bochkovskiy, Nikolay Mikhaylov, Bijan Jalali
  • Publication number: 20110181464
    Abstract: A method of determining coordinates of a mobile Global Navigation Satellite System (GNSS) receiver includes processing signals from space vehicles including performing measurements of pseudoranges and Doppler shift, extracting ephemeris data, and determining GNSS receiver coordinates from said measurements.
    Type: Application
    Filed: May 24, 2010
    Publication date: July 28, 2011
    Applicants: MSTAR SEMICONDUCTOR, INC., MSTAR FRANCE SAS, MSTAR SEMICONDUCTOR, INC., MSTAR SOFTWARE R&D (SHENZHEN) LTD.
    Inventors: Mikhail Vasilyev, Nikolay Mikhaylov, Sergey Pospelov, Bijan Jalali
  • Publication number: 20100265133
    Abstract: A method of multipath error suppression in a satellite navigation receiver, including steps of navigation satellites signals searching, receiving and processing complex signals from each satellite, tracking found signals with a following-up open loop and determining coordinates, receiver velocity and exact time based on measurements of direct and reflected signal delay and Doppler frequency, the method including: forming, on the basis of navigation parameters, a two-dimensional accumulated power grid, calculating single-path signal corrections using the centered accumulated power grid determining, whether a multipath is presented, and performing, in case of positive result of this determination, improvement of corrections using weights, wherein, performing improvement of corrections using weights is carried out by forming a likelihood function on the basis of a centered accumulated powers vector, and correction is performed according to the found likelihood function global maximum.
    Type: Application
    Filed: April 14, 2010
    Publication date: October 21, 2010
    Applicants: MSTAR SEMICONDUCTOR, INC., MSTAR SEMICONDUCTOR, INC., MSTAR FRANCE SAS, MSTAR SOFTWARE R&D (SHENZHEN) LTD.
    Inventors: Mikhail Kholostov, Alexander Fedotov, Nikolay Mikhaylov, Bijan Jalali
  • Patent number: 7729457
    Abstract: A GPS receiver architecture is disclosed having digital correlation processing in faster than real-time, which is achieved by storing signal samples into a memory in real-time at a first rate and reading packs of stored samples at a second higher rate. For mitigating cross-correlation interference from the strong signal to reception of weak ones, a group of compensator blocks is introduced. A method of interference waveform reproducing is disclosed that compensates influence of stronger signal over long coherent accumulation intervals, not complicating processing of the strong signal over shorter coherent accumulation intervals. Search bins corrupted by under-compensated interference are pre-calculated and discarded.
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: June 1, 2010
    Assignee: MStar Semiconductor, Inc.
    Inventors: Andrey Bochkovskiy, Mikhail Goloubev, Sergey Pospelov, Mikhail Vasilyev, Valeri Tchistiakov, Mikhail Kholostov, Sergey Nozdrachev, Nikolay Mikhaylov, Bijan Jalali
  • Patent number: 7688262
    Abstract: A method for processing weak indoor signals in presence of cross-correlation or continuous wave interference and associated GPS receiver are provided. The method comprises providing a two-dimensional delay-Doppler accumulated power pattern having a plurality of accumulated powers corresponding to frequency bins and code bins; for a predetermined frequency bin, determining partial average value of accumulated powers over specific set of code bins so that the major part of signal energy is intentionally not included in the partial average; and subtracting the partial average value from all accumulated powers for the predetermined frequency bin; repeating the partial average calculation and subtraction for each frequency bin of a pattern to generate a two-dimensional delay-Doppler accumulated power pattern with suppressed interference effect.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: March 30, 2010
    Assignee: MStar Semiconductor, Inc.
    Inventors: Andrey Bochkovskiy, Mikhail Goloubev, Sergey Pospelov, Mikhail Vasilyev, Valeri Tchistiakov, Mikhail Kholostov, Sergey Nozdrachev, Nikolay Mikhaylov, Bijan Jalali
  • Patent number: 7630430
    Abstract: A method of increasing speed of digital correlation processing in a global positioning system (GPS) receiver and associated receiver. The method comprises steps of digitizing a received GPS signal at a first rate to obtain digitized samples, storing the digitized samples in a memory at the first rate, reading packs of a predetermined number of digitized samples at a second rate that is faster than the first rate, generating packs of the predetermined number of signal replica samples at the second rate, and correlating the packs of digitized samples from the memory with the generated replica samples at the second rate.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: December 8, 2009
    Assignee: MStar Semiconductor, Inc.
    Inventors: Andrey Bochkovskiy, Mikhail Goloubev, Sergey Pospelov, Mikhail Vasilyev, Valeri Tchistiakov, Mikhail Kholostov, Sergey Nozdrachev, Nikolay Mikhaylov, Bijan Jalali
  • Publication number: 20090002232
    Abstract: A GPS data recording apparatus includes a storage device and a processing circuit coupled to the storage device. The processing circuit comprises: a sampling module, for sampling a GPS data; and a packet processor, for packetizing the sampled GPS data to generate a data packet to be stored in the storage device, and for unpacketizing the stored data packet from the storage device if necessary. According to present invention, GPS data can be recorded and be replayed as necessary.
    Type: Application
    Filed: May 30, 2008
    Publication date: January 1, 2009
    Inventors: Ping-Hsin Kan, Chun-Ming Huang, Sergey Pospelov, Andrey Bochkovskiy, Nikolay Mikhaylov, Bijan Jalali
  • Publication number: 20080316096
    Abstract: A method for processing weak indoor signals in presence of cross-correlation or continuous wave interference and associated GPS receiver are provided. The method comprises providing a two-dimensional delay-Doppler accumulated power pattern comprising a plurality of accumulated powers corresponding to frequency and time; for a predetermined frequency, determining a partial average power value of accumulated powers of the two-dimensional delay-Doppler accumulated power pattern over a plurality of time points; and subtracting the partial average power value from the accumulated powers to generate a modified delay-Doppler accumulated power pattern with suppressed interference effect.
    Type: Application
    Filed: September 3, 2008
    Publication date: December 25, 2008
    Inventors: Andrey Bochkovskiy, Mikhail Goloubev, Sergey Pospelov, Mikhail Vasilyev, Valeri Tchistiakov, Mikhail Kholostov, Sergey Nozdrachev, Nikolay Mikhaylov, Bijan Jalali
  • Patent number: 7436356
    Abstract: A method for processing weak indoor signals in presence of cross-correlation or continuous wave interference and associated GPS receiver are provided. The method comprises providing a two-dimensional delay-Doppler accumulated power pattern having a plurality of accumulated powers corresponding to frequency and time; for a predetermined frequency, determining an average value of accumulated powers of the two-dimensional delay-Doppler accumulated power pattern over a plurality of times; and subtracting the average value from the accumulated powers used in determining the average at the frequency over the plurality of times to generate a delay-Doppler accumulated power pattern with suppressed interference effect.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: October 14, 2008
    Assignee: MStar Semiconductor, Inc.
    Inventors: Andrey Bochkovskiy, Mikhail Goloubev, Sergey Pospelov, Mikhail Vasilyev, Valeri Tchistiakov, Mikhail Kholostov, Sergey Nozdrachev, Nikolay Mikhaylov, Bijan Jalali
  • Publication number: 20070024499
    Abstract: A method for processing weak indoor signals in presence of cross-correlation or continuous wave interference and associated GPS receiver are provided. The method comprises providing a two-dimensional delay-Doppler accumulated power pattern having a plurality of accumulated powers corresponding to frequency and time; for a predetermined frequency, determining an average value of accumulated powers of the two-dimensional delay-Doppler accumulated power pattern over a plurality of times; and subtracting the average value from the accumulated powers used in determining the average at the frequency over the plurality of times to generate a delay-Doppler accumulated power pattern with suppressed interference effect.
    Type: Application
    Filed: March 24, 2006
    Publication date: February 1, 2007
    Inventors: Andrey Bochkovskiy, Mikhail Goloubev, Sergey Pospelov, Mikhail Vasilyev, Valeri Tchistiakov, Mikhail Kholostov, Sergey Nozdrachev, Nikolay Mikhaylov, Bijan Jalali
  • Publication number: 20070019715
    Abstract: A method of increasing speed of digital correlation processing in a global positioning system (GPS) receiver and associated receiver. The method comprises steps of digitizing a received GPS signal at a first rate to obtain digitized samples, storing the digitized samples in a memory at the first rate, reading packs of a predetermined number of digitized samples at a second rate that is faster than the first rate, generating packs of the predetermined number of signal replica samples at the second rate, and correlating the packs of digitized samples from the memory with the generated replica samples at the second rate.
    Type: Application
    Filed: May 22, 2006
    Publication date: January 25, 2007
    Inventors: Andrey Bochkovskiy, Mikhail Goloubev, Sergey Pospelov, Mikhail Vasilyev, Valeri Tchistiakov, Mikhail Kholostov, Sergey Nozdrachev, Nikolay Mikhaylov, Bijan Jalali
  • Publication number: 20070019714
    Abstract: A GPS receiver architecture is disclosed having digital correlation processing in faster than real-time. For mitigating cross-correlation interference from the strong signal to reception of weak ones, a group of compensator blocks is introduced. A method of interference waveform reproducing is disclosed that compensates influence of stronger signal over long coherent accumulation intervals, not complicating processing of the strong signal over shorter coherent accumulation intervals. Search bins corrupted by under-compensated interference are pre-calculated and discarded.
    Type: Application
    Filed: May 10, 2006
    Publication date: January 25, 2007
    Inventors: Andrey Bochkovskiy, Mikhail Goloubev, Sergey Pospelov, Mikhail Vasilyev, Valeri Tchistiakov, Mikhail Kholostov, Sergey Nozdrachev, Nikolay Mikhaylov, Bijan Jalali
  • Patent number: 4418917
    Abstract: A portable electronic target game is disclosed, including a playing field display, scoring displays and two sets of input keys to permit two players to simultaneously control the operation of the game. Each player may launch a projectile toward a moving ball in an effort to intercept it, causing the ball to move forward the opposing player. The ball is removed from play if it is captured by a player or if it lands in a pocket location on the playing field. The scoring includes bonus points and penalties for the various events. The motion of the ball is controlled in a pseudorandom manner in accordance with a predetermined probability matrix.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: December 6, 1983
    Assignee: Mattel, Inc.
    Inventors: Bijan Jalali, Luan G. Tran