Patents by Inventor Anand Ganesh Dabak

Anand Ganesh Dabak 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).

  • Publication number: 20240411017
    Abstract: In one example, a method comprises using a first transducer, emitting a first acoustic signal representing a first code. The method further comprises using the first transducer, receiving a second acoustic signal, and converting the second acoustic signal to a sensor signal. The method further comprises computing a time-of-flight for the second acoustic signal based on a time difference between when the first transducer emits the first acoustic signal and when the first transducer receives the second acoustic signal. The method further comprises responsive to the correlation result indicating that the third acoustic signal is a reflection of a third acoustic signal emitted by a second transducer: determining a delay time between when the first transducer emits the first acoustic signal and when the second transducer emits the third acoustic signal; adjusting the time-of-flight based on the delay time; and providing a distance measurement based on the adjusted time-of-flight.
    Type: Application
    Filed: December 22, 2023
    Publication date: December 12, 2024
    Applicant: Texas Instruments Incorporated
    Inventors: LEI DING, Srinath Mathur Ramaswamy, Anand Gopalan, Vaibhav Garg, Anand Ganesh Dabak
  • Publication number: 20240319313
    Abstract: In an example method of target position estimation, the method includes calculating initial estimated positions of a target transmitter. Each of the initial estimated positions is based on an angle of arrival estimate received from a locator. The method includes generating an error projection associated with each of the initial estimated positions. The error projection is based on azimuth and elevation error characteristics of the locator associated with the initial estimated position. The method includes creating a select group of the locators based on overlaps of the error projections, wherein the select group of locators comprises a subset of the locators. The method includes calculating a refined estimate of the position of the target transmitter based on the initial estimated positions associated with the select group of locators.
    Type: Application
    Filed: June 4, 2024
    Publication date: September 26, 2024
    Inventors: Borja Martinez Huerta, Guillem Boquet Pujadas, Xavier Vilajosana Guillen, Anand Ganesh Dabak, Kaichien Tsai, Jianwei Zhou, Danil Shalumov
  • Patent number: 12058630
    Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: August 6, 2024
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Anand Ganesh Dabak, Eko Nugroho Onggosanusi, Badri Varadarajan
  • Publication number: 20240248162
    Abstract: One example includes a passive radar receiver system including an RF receiver front-end to receive a wireless source signal and a reflected signal. An antenna switch of the front-end switches a first antenna to a receiver chain during a first time to generate first radar signal data based on a combined wireless signal comprising wireless source signal and the reflected signal, and switches a second antenna to the receiver chain during a second time to generate second radar signal data based on the combined wireless signal. A signal processor generates source signal data associated with the wireless source signal based on the first and second radar signal data and generates reflected signal data associated with the reflected signal based on the first and second radar signal data, and generates target radar data associated with a target based on the source and reflected radar signal data.
    Type: Application
    Filed: February 12, 2024
    Publication date: July 25, 2024
    Inventors: Yaron Alpert, Matan Ben-Shachar, Anand Ganesh Dabak, Brian Ginsburg
  • Patent number: 12038522
    Abstract: In an example method of target position estimation, the method includes calculating initial estimated positions of a target transmitter. Each of the initial estimated positions is based on an angle of arrival estimate received from a locator. The method includes generating an error projection associated with each of the initial estimated positions. The error projection is based on azimuth and elevation error characteristics of the locator associated with the initial estimated position. The method includes creating a select group of the locators based on overlaps of the error projections, wherein the select group of locators comprises a subset of the locators. The method includes calculating a refined estimate of the position of the target transmitter based on the initial estimated positions associated with the select group of locators.
    Type: Grant
    Filed: November 9, 2021
    Date of Patent: July 16, 2024
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Borja Martinez Huerta, Guillem Boquet Pujadas, Xavier Vilajosana Guillen, Anand Ganesh Dabak, Kaichien Tsai, Jianwei Zhou, Danil Shalumov
  • Patent number: 11933873
    Abstract: One example includes a passive radar receiver system including an RF receiver front-end to receive a wireless source signal and a reflected signal. An antenna switch of the front-end switches a first antenna to a receiver chain during a first time to generate first radar signal data based on a combined wireless signal comprising wireless source signal and the reflected signal, and switches a second antenna to the receiver chain during a second time to generate second radar signal data based on the combined wireless signal. A signal processor generates source signal data associated with the wireless source signal based on the first and second radar signal data and generates reflected signal data associated with the reflected signal based on the first and second radar signal data, and generates target radar data associated with a target based on the source and reflected radar signal data.
    Type: Grant
    Filed: March 16, 2022
    Date of Patent: March 19, 2024
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Yaron Alpert, Matan Ben-Shachar, Anand Ganesh Dabak, Brian Ginsburg
  • Publication number: 20240089148
    Abstract: A user client device with a single receive (RX) chain, a first antenna and a second antenna, and a processor that causes the user client device to couple the single RX chain to the first antenna to receive a first data packet on a first channel and determine a first channel state information (CSI) tile of the first channel based on one or more fields in the first data packet, decouple the first antenna from the single RX chain and couple the second antenna to the single RX chain to continue receiving the first data packet on a second channel, determine a second CSI tile of the second channel based on one or more of a portion of the first plurality of fields, aggregate the first CSI tile with the second CSI tile, and generate a CSI matrix based on aggregating the first CSI tile with the second CSI tile.
    Type: Application
    Filed: November 13, 2023
    Publication date: March 14, 2024
    Inventors: Yaron ALPERT, Matan BEN-SHACHAR, Anand Ganesh DABAK
  • Patent number: 11855810
    Abstract: A user client device with a single receive (RX) chain, a first antenna and a second antenna, and a processor that causes the user client device to couple the single RX chain to the first antenna to receive a first data packet on a first channel and determine a first channel state information (CSI) tile of the first channel based on one or more fields in the first data packet, decouple the first antenna from the single RX chain and couple the second antenna to the single RX chain to continue receiving the first data packet on a second channel, determine a second CSI tile of the second channel based on one or more of a portion of the first plurality of fields, aggregate the first CSI tile with the second CSI tile, and generate a CSI matrix based on aggregating the first CSI tile with the second CSI tile.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: December 26, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Yaron Alpert, Matan Ben-Shachar, Anand Ganesh Dabak
  • Publication number: 20230296714
    Abstract: One example includes a passive radar receiver system including an RF receiver front-end to receive a wireless source signal and a reflected signal. An antenna switch of the front-end switches a first antenna to a receiver chain during a first time to generate first radar signal data based on a combined wireless signal comprising wireless source signal and the reflected signal, and switches a second antenna to the receiver chain during a second time to generate second radar signal data based on the combined wireless signal. A signal processor generates source signal data associated with the wireless source signal based on the first and second radar signal data and generates reflected signal data associated with the reflected signal based on the first and second radar signal data, and generates target radar data associated with a target based on the source and reflected radar signal data.
    Type: Application
    Filed: March 16, 2022
    Publication date: September 21, 2023
    Inventors: Yaron Alpert, Matan Ben-Shachar, Anand Ganesh Dabak, Brian Ginsburg
  • Patent number: 11733377
    Abstract: In an ultrasonic detection system that uses frequency-modulation or phase-modulation coding to distinguish emitted bursts from multiple transducers, a receiver associated with a transducer uses peak search, peak buffer, and peak rank stages in one or more receiver signal processing paths to identify valid received ultrasonic signal envelope peaks in correlator outputs. The peak rank stage can support different modes respectively designed to handle one code, two or more codes, or two or more codes with support for Doppler frequency shift detection. Valid peak information (e.g., amplitude and time) can be reported to a central controller and/or stored locally in a fusion stage to generate more intelligent information for targets or obstacles using peaks from multiple bursts.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 22, 2023
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Lei Ding, Srinath Mathur Ramaswamy, Anand Gopalan, Vaibhav Garg, Anand Ganesh Dabak, Baher S. Haroun
  • Publication number: 20230141360
    Abstract: In an example method of target position estimation, the method includes calculating initial estimated positions of a target transmitter. Each of the initial estimated positions is based on an angle of arrival estimate received from a locator. The method includes generating an error projection associated with each of the initial estimated positions. The error projection is based on azimuth and elevation error characteristics of the locator associated with the initial estimated position. The method includes creating a select group of the locators based on overlaps of the error projections, wherein the select group of locators comprises a subset of the locators. The method includes calculating a refined estimate of the position of the target transmitter based on the initial estimated positions associated with the select group of locators.
    Type: Application
    Filed: November 9, 2021
    Publication date: May 11, 2023
    Inventors: Borja Martinez Huerta, Guillem Boquet Pujadas, Xavier Vilajosana Guillen, Anand Ganesh Dabak, Kaichien Tsai, Jianwei Zhou, Danil Shalumov
  • Publication number: 20220216961
    Abstract: A method of power saving for a wireless transceiver (FIGS. 1 and 2) is disclosed. The transceiver has an active power mode (504) and a reduced power mode (510). The transceiver is operated in the reduced power mode (510) and monitors transmissions from a remote wireless transmitter while in the reduced power mode. The transceiver identifies a transmission from the remote wireless transmitter by a transceiver identity included in the transmission (FIG. 6, UE identification). The transceiver transitions to the active power mode (512) in response to identifying the transmission.
    Type: Application
    Filed: March 21, 2022
    Publication date: July 7, 2022
    Inventors: Timothy Mark Schmidl, Eko Nugroho Onggosanusi, Anand Ganesh Dabak, Aris Papasakellariou
  • Publication number: 20220123964
    Abstract: A user client device with a single receive (RX) chain, a first antenna and a second antenna, and a processor that causes the user client device to couple the single RX chain to the first antenna to receive a first data packet on a first channel and determine a first channel state information (CSI) tile of the first channel based on one or more fields in the first data packet, decouple the first antenna from the single RX chain and couple the second antenna to the single RX chain to continue receiving the first data packet on a second channel, determine a second CSI tile of the second channel based on one or more of a portion of the first plurality of fields, aggregate the first CSI tile with the second CSI tile, and generate a CSI matrix based on aggregating the first CSI tile with the second CSI tile.
    Type: Application
    Filed: October 18, 2021
    Publication date: April 21, 2022
    Inventors: Yaron ALPERT, Matan BEN-SHACHAR, Anand Ganesh DABAK
  • Patent number: 11283563
    Abstract: A method of power saving for a wireless transceiver (FIGS. 1 and 2) is disclosed. The transceiver has an active power mode (504) and a reduced power mode (510). The transceiver is operated in the reduced power mode (510) and monitors transmissions from a remote wireless transmitter while in the reduced power mode. The transceiver identifies a transmission from the remote wireless transmitter by a transceiver identity included in the transmission (FIG. 6, UE identification). The transceiver transitions to the active power mode (512) in response to identifying the transmission.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: March 22, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Timothy Mark Schmidl, Eko Nugroho Onggosanusi, Anand Ganesh Dabak, Aris Papasakellariou
  • Publication number: 20210111770
    Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Inventors: Eko N. Onggosanusi, Badri Varadarajan, Anand Ganesh Dabak
  • Patent number: 10979277
    Abstract: In described examples, a method of operating a transmitter includes generating a frequency reference signal having a reference frequency and outputting the frequency reference to a phase locked loop (PLL) that includes a voltage controlled oscillator (VCO). The VCO output is locked to the frequency reference signal to form a carrier signal. The transmitter receives an I input signal, a Q input signal, and a direct current (DC) leaky carrier signal. Either the I input signal or the Q input signal is added to the leaky carrier signal. The carrier signal is modulated with the resulting two signals using an I-Q mixer to generate a modulated signal that includes an unmodulated carrier signal component. The modulated signal is then transmitted.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: April 13, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Timothy Mark Schmidl, Swaminathan Sankaran, Gerd Schuppener, Salvatore Luciano Finocchiaro, Siraj Akhtar, Tolga Dinc, Anand Ganesh Dabak, Baher Haroun
  • Patent number: 10873375
    Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.
    Type: Grant
    Filed: February 12, 2013
    Date of Patent: December 22, 2020
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Eko N. Onggosanusi, Badri Varadarajan, Anand Ganesh Dabak
  • Publication number: 20200225345
    Abstract: Ultrasonic ranging systems and methods that use coding to distinguish emitted bursts from multiple transducers temporally stagger the bursts emitted from the transducers. The stagger delay between bursts from different transducers in a sensing frame can be randomized between different sensing frames to prevent blind zones. The stagger delay can be relatively small (e.g., between 3 ms and 10 ms) as compared to delays required between bursts in a single-tone ranging system (which would need to be more on the order of between 30 ms and 40 ms, depending on the maximum detecting range of the ranging system). The coding of bursts can be selected to utilize the entire bandwidth of the bursting transducer so as to preserve short-range sensitivity over transducer ringing. Schemes in which some transducers in a system only listen for bursts from other transducers but do not themselves burst within a sensing frame are also described.
    Type: Application
    Filed: May 30, 2019
    Publication date: July 16, 2020
    Inventors: LEI DING, Srinath Mathur Ramaswamy, Anand Gopalan, Vaibhav Garg, Anand Ganesh Dabak
  • Publication number: 20190393935
    Abstract: The present invention provides a receiver. In one embodiment, the receiver includes a receive portion employing transmission signals from a transmitter having multiple antennas and capable of providing channel estimates. The receiver also includes a feedback generator portion configured to provide to the transmitter a pre-coder selection for data transmission that is based on the channel estimates, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks. The present invention also provides a transmitter having multiple antennas. In one embodiment, the transmitter includes a transmit portion coupled to the multiple antennas and capable of applying pre-coding to a data transmission for a receiver. The transmitter also includes a feedback decoding portion configured to decode a pre-coder selection for the data transmission that is fed back from the receiver, wherein the pre-coder selection corresponds to a grouping of frequency-domain resource blocks.
    Type: Application
    Filed: February 12, 2013
    Publication date: December 26, 2019
    Applicant: Texas Instruments Incorporated
    Inventors: Eko N. ONGGOSANUSI, Badri VARADARAJAN, Anand Ganesh DABAK
  • Publication number: 20190342844
    Abstract: Embodiments of the present disclosure provide a transmitter, a receiver and methods of operating a transmitter and a receiver. In one embodiment, the transmitter includes a synchronization unit configured to provide a primary synchronization signal and a secondary synchronization signal having first and second segments. The transmitter also includes a secondary scrambling unit configured to provide a scrambled secondary synchronization signal, wherein scrambling agents for the first and second segments are derived from a primary synchronization sequence of the primary synchronization signal. The secondary scrambling unit is further configured to provide an additional scrambling of one of the first and second segments, wherein a second scrambling agent is derived from the remaining segment of a secondary synchronization sequence of the secondary synchronization signal.
    Type: Application
    Filed: July 1, 2019
    Publication date: November 7, 2019
    Inventors: ANAND GANESH DABAK, EKO NUGROHO ONGGOSANUSI, BADRI VARADARAJAN