Patents by Inventor Sourabh Ravindran

Sourabh Ravindran 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: 20190011978
    Abstract: An embodiment of this disclosure provides a wearable device. The wearable device includes a memory configured to store a plurality of content for display, a transceiver configured to receive the plurality of content from a connected device, a display configured to display the plurality of content, and a processor coupled to the memory, the display, and the transceiver. The processor is configured to control the display to display at least some of the plurality of content in a spatially arranged format. The displayed content is on the display at a display position. The plurality of content, when shown on the connected device, is not in the spatially arranged format. The processor is also configured to receive movement information based on a movement of the wearable device. The processor is also configured to adjust the display position of the displayed content according to the movement information of the wearable device.
    Type: Application
    Filed: July 10, 2017
    Publication date: January 10, 2019
    Inventors: Sourabh Ravindran, Hamid R. Sheikh, Michael Polley, Youngjun Yoo
  • Patent number: 10142332
    Abstract: A wearable device is provided for authentication that includes a memory element and processing circuitry coupled to the memory element. The memory element configured to store a plurality of user profiles. The processing circuitry is configured to identify a pairing between the wearable device and a device. The processing circuitry is configured to identify a user of the wearable device. The processing circuitry also is configured to determine if the identified user matches a profile of the plurality of user profiles. The processing circuitry is also configured to responsive to the identified user matching the profile, determine if the profile provides authorization to access the device. The processing circuitry is also configured to responsive to the profile providing authorization to the device, send a message to the device authorizing access to the device.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: November 27, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sourabh Ravindran, Vitali Loseu, Michael Polley, Manish Goel, Kyong Ho Lee, Seok-Jun Lee
  • Patent number: 10078482
    Abstract: Methods and electronic devices for managing information context among devices. The method includes switching from displaying information of a first application to displaying information of a second application. The method also includes identifying information of the first application that is relevant to the second application. The relevant information includes at least a portion of the displayed information of the first application. Additionally, the method includes sending an indication of the relevant information to a second electronic device for display of the relevant information at the second electronic device. The method may also include, while displaying the information of the second application, receiving input information from the second electronic device. The input information may include at least a portion of the relevant information displayed at the second electronic device. Additionally, the method may include using the input information in the second application.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: September 18, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Vitali Loseu, Sourabh Ravindran
  • Publication number: 20180192160
    Abstract: One embodiment provides a method comprising analyzing one or more frames of a piece of content to determine a context of the one or more frames, determining a product to advertise in the piece of content based on the context, and augmenting the piece of content with a product placement for the product. The product placement appears to occur naturally in the piece of content.
    Type: Application
    Filed: March 29, 2017
    Publication date: July 5, 2018
    Inventors: Sourabh Ravindran, Youngjun Yoo
  • Publication number: 20180136796
    Abstract: A method of implementing a user interface on a mobile device is described. The method comprises learning user preference and context information; storing user preferences associated with the user-centric interface on at least one of the device or a secure server; determining and updating the context information and the user preferences on at least one of the device or a secure server.
    Type: Application
    Filed: November 14, 2016
    Publication date: May 17, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Sourabh Ravindran, Youngjun Yoo, Michael Oliver Polley
  • Publication number: 20180103855
    Abstract: A method and apparatus for monitoring heart rate. The method includes receiving a digital heart monitoring signal, determining the integrity of said signal with a “hand detect” signal that confirms electrical connection to the subject, dividing the digital heart monitoring signal into at least one frame, generating a folded correlation value for the center sample in the at least one frame, identify the number of peaks folded correlation values based on amplitude and distance parameters of the digital heart monitoring signal in the at least one frame, removing false peaks and collecting peaks corresponding to a length of time, determining the heart rate based on the identified peaks wherein the identified peaks relate to a minimum distance between valid heart beat peaks based on a heart rate estimate, computing the weighted average of heart rate value based on the number of previous heart rate values.
    Type: Application
    Filed: November 6, 2017
    Publication date: April 19, 2018
    Inventors: Steven T. Dunbar, Sourabh Ravindran
  • Patent number: 9880046
    Abstract: A method and apparatus for determining properties of at least one of a surface or materials adjacent to a portable device. The method includes windowing a segment of the received signal to remove an edge transients, computing the FFT power spectral density of the signal, determining a peak in the spectral energy at a frequency, finding local peaks by determining the difference in the signal amplitude is relation to a pre-determined threshold, and computing harmonic energy according to the local peaks and the difference and determining at least one property of the surface or material.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: January 30, 2018
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Amardeep Sathyanarayana, Nitish Murthy, Sourabh Ravindran, Brian Paul Burk
  • Patent number: 9808163
    Abstract: A method and apparatus for monitoring heart rate. The method includes receiving a digital heart monitoring signal, determining the integrity of said signal with a “hand detect” signal that confirms electrical connection to the subject, dividing the digital heart monitoring signal into at least one frame, generating a folded correlation value for the center sample in the at least one frame, identify the number of peaks folded correlation values based on amplitude and distance parameters of the digital heart monitoring signal in the at least one frame, removing false peaks and collecting peaks corresponding to a length of time, determining the heart rate based on the identified peaks wherein the identified peaks relate to a minimum distance between valid heart beat peaks based on a heart rate estimate, computing the weighted average of heart rate value based on the number of previous heart rate values.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: November 7, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Steven T. Dunbar, Sourabh Ravindran
  • Publication number: 20170303790
    Abstract: A mobile hyperspectral camera system is described. The mobile hyperspectral camera system comprises a mobile host device comprising a processor and a display: a plurality of cameras, coupled to the processor, configured to capture images in distinct spectral bands; and a hyperspectral flash array, coupled to the processor, configured to provide illumination to the distinct spectral bands. A method of implementing a mobile hyperspectral camera system is also described.
    Type: Application
    Filed: January 4, 2017
    Publication date: October 26, 2017
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Raja Bala, Sourabh Ravindran, Hamid Rahim Sheikh, Youngjun Yoo, Michael Oliver Polley
  • Publication number: 20170296075
    Abstract: Methods for heart rate measurement based on pulse oximetry are provided that can tolerate some degree of relative displacement of a photoplethysmograph (PPG) heart rate monitor device. In some methods, artifact compensation based on a reference signal is performed on the PPG signal data to remove artifacts in the signal that may be caused, for example, by changes in ambient light and/or motion of a person wearing the monitor device. The reference signal used for artifact compensation may be generated using an LED of a complementary wavelength to that of the LED used to generate the PPG signal, or by driving an LED at a lower current than the current applied to generate the PPG signal.
    Type: Application
    Filed: June 27, 2017
    Publication date: October 19, 2017
    Inventors: Vitali Loseu, Sourabh Ravindran
  • Patent number: 9717423
    Abstract: Methods for heart rate measurement based on pulse oximetry are provided that can tolerate some degree of relative displacement of a photoplethysmograph (PPG) heart rate monitor device. In some methods, artifact compensation based on a reference signal is performed on the PPG signal data to remove artifacts in the signal that may be caused, for example, by changes in ambient light and/or motion of a person wearing the monitor device. The reference signal used for artifact compensation may be generated using an LED of a complementary wavelength to that of the LED used to generate the PPG signal, or by driving an LED at a lower current than the current applied to generate the PPG signal.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: August 1, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Vitali Loseu, Sourabh Ravindran
  • Publication number: 20170147269
    Abstract: Methods and electronic devices for managing information context among devices. The method includes switching from displaying information of a first application to displaying information of a second application. The method also includes identifying information of the first application that is relevant to the second application. The relevant information includes at least a portion of the displayed information of the first application. Additionally, the method includes sending an indication of the relevant information to a second electronic device for display of the relevant information at the second electronic device. The method may also include, while displaying the information of the second application, receiving input information from the second electronic device. The input information may include at least a portion of the relevant information displayed at the second electronic device. Additionally, the method may include using the input information in the second application.
    Type: Application
    Filed: November 25, 2015
    Publication date: May 25, 2017
    Inventors: Vitali Loseu, Sourabh Ravindran
  • Patent number: 9462956
    Abstract: A heart monitor includes a single chest accelerometer (210), an analog signal conditioning and sampling section (215) responsive to said accelerometer to produce a digital signal substantially representing acceleration, and a digital processor (220) operable to filter the acceleration signal into a signal affected by body motion and to cancel the body motion signal from the acceleration signal, thereby to produce an acceleration-based cardiac-related signal. Other processes and electronic systems are also disclosed.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: October 11, 2016
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Keya R. Pandia, Sourabh Ravindran, Edwin Randolph Cole
  • Publication number: 20160197916
    Abstract: A wearable device is provided for authentication that includes a memory element and processing circuitry coupled to the memory element. The memory element configured to store a plurality of user profiles. The processing circuitry is configured to identify a pairing between the wearable device and a device. The processing circuitry is configured to identify a user of the wearable device. The processing circuitry also is configured to determine if the identified user matches a profile of the plurality of user profiles. The processing circuitry is also configured to responsive to the identified user matching the profile, determine if the profile provides authorization to access the device. The processing circuitry is also configured to responsive to the profile providing authorization to the device, send a message to the device authorizing access to the device.
    Type: Application
    Filed: January 5, 2015
    Publication date: July 7, 2016
    Inventors: Sourabh Ravindran, Vitali Loseu, Michael Polley, Manish Goel, Kyong Ho Lee, Seok-Jun Lee
  • Publication number: 20150330831
    Abstract: A method and apparatus for determining properties of at least one of a surface or materials adjacent to a portable device. The method includes windowing a segment of the received signal to remove an edge transients, computing the FFT power spectral density of the signal, determining a peak in the spectral energy at a frequency, finding local peaks by determining the difference in the signal amplitude is relation to a pre-determined threshold, and computing harmonic energy according to the local peaks and the difference and determining at least one property of the surface or material.
    Type: Application
    Filed: May 14, 2015
    Publication date: November 19, 2015
    Inventors: Amardeep Sathyanarayana, Nitish Murthy, Sourabh Ravindran, Brian Paul Burk
  • Publication number: 20150196213
    Abstract: A heart monitor includes a single chest accelerometer (210), an analog signal conditioning and sampling section (215) responsive to said accelerometer to produce a digital signal substantially representing acceleration, and a digital processor (220) operable to filter the acceleration signal into a signal affected by body motion and to cancel the body motion signal from the acceleration signal, thereby to produce an acceleration-based cardiac-related signal. Other processes and electronic systems are also disclosed.
    Type: Application
    Filed: March 24, 2015
    Publication date: July 16, 2015
    Inventors: Keya R. Pandia, Sourabh Ravindran, Edwin Randolph Cole
  • Publication number: 20150094592
    Abstract: A method for ultrasound based heart rate detection in a heart rate monitoring system is provided that includes receiving a demodulated Doppler ultrasound signal, applying a bandpass filter to the demodulated Doppler ultrasound signal to remove a direct current (DC) component and out-of-band noise, wherein a filtered demodulated Doppler ultrasound signal is generated, rectifying the filtered demodulated Doppler ultrasound signal to generate a rectified filtered demodulated Doppler ultrasound signal, applying a low-pass filter to the rectified filtered demodulated Doppler ultrasound signal to filter out undesired components to leave a resulting signal corresponding to power shift due to heart rate, detecting peaks in the resulting signal, and computing a heart rate based on the detected peaks.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 2, 2015
    Inventors: Sourabh Ravindran, Jonathon David Spaulding
  • Publication number: 20140213863
    Abstract: Methods for heart rate measurement based on pulse oximetry are provided that can tolerate some degree of relative displacement of a photoplethysmograph (PPG) heart rate monitor device. In some methods, artifact compensation based on a reference signal is performed on the PPG signal data to remove artifacts in the signal that may be caused, for example, by changes in ambient light and/or motion of a person wearing the monitor device. The reference signal used for artifact compensation may be generated using an LED of a complementary wavelength to that of the LED used to generate the PPG signal, or by driving an LED at a lower current than the current applied to generate the PPG signal.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 31, 2014
    Applicant: Texas Instruments Incorporated
    Inventors: Vitali Loseu, Sourabh Ravindran
  • Patent number: 8498424
    Abstract: A method and apparatus of an adaptive gain control (AGC) unit. The method includes receiving a noisy input signal and determining to utilize a stethoscope in at least one of a noise suppression mode or in amplification mode depending if the noise level is at least one of above or below a threshold, wherein the stethoscope is in noise suppression mode when K is less than the threshold and is amplification mode when K is above the threshold.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: July 30, 2013
    Assignee: Texas Instruments Incorporated
    Inventor: Sourabh Ravindran
  • Patent number: 8457723
    Abstract: A method of processing heart monitoring samples is provided that includes computing a folded correlation value for each heart monitoring sample in a plurality of heart monitoring samples and identifying peaks corresponding to heartbeats based on the folded correlation values of the heart monitoring samples.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: June 4, 2013
    Assignee: Texas Instruments Incorporated
    Inventor: Sourabh Ravindran