Patents by Inventor Rafel Jibry
Rafel Jibry 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).
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Publication number: 20220300070Abstract: Described herein are techniques for tracking objects (including human body parts such as a hand), namely: 1) two-state transducer interpolation in acoustic phased-arrays; 2) modulation techniques in acoustic phased-arrays; 3) fast acoustic full matrix capture during haptic effects; 4) time-of-flight depth sensor fusion system; 5) phase modulated spherical wave-fronts in acoustic phased-arrays; 6) long wavelength phase modulation of acoustic field for location and tracking; and 7) camera calibration through ultrasonic range sensing.Type: ApplicationFiled: June 8, 2022Publication date: September 22, 2022Inventors: Michele Iodice, Benjamin John Oliver Long, Brian Kappus, Thomas Andrew Carter, Rafel Jibry, Orestis Georgiou
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Publication number: 20220300028Abstract: Phased array systems rely on the production of an exact carrier frequency to function. Reconstructing digital signals by specified amplitude and phase is accomplished explicitly by inducing frequency shifts away from a base frequency implied by phase changes. Shifting the carrier frequency of a digitally controlled phased array while preserving the timing of the individual phase pulses enables more efficient driving of the phased array system when the phase of the drive signals change dynamically in time.Type: ApplicationFiled: June 7, 2022Publication date: September 22, 2022Inventors: Benjamin John Oliver Long, Rafel Jibry
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Patent number: 11378997Abstract: Phased array systems rely on the production of an exact carrier frequency to function. Reconstructing digital signals by specified amplitude and phase is accomplished explicitly by inducing frequency shifts away from a base frequency implied by phase changes. Shifting the carrier frequency of a digitally controlled phased array while preserving the timing of the individual phase pulses enables more efficient driving of the phased array system when the phase of the drive signals change dynamically in time.Type: GrantFiled: October 12, 2019Date of Patent: July 5, 2022Assignee: ULTRAHAPTICS IP LTDInventors: Benjamin John Oliver Long, Rafel Jibry
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Patent number: 11360546Abstract: Described herein are techniques for tracking objects (including human body parts such as a hand), namely: 1) two-state transducer interpolation in acoustic phased-arrays; 2) modulation techniques in acoustic phased-arrays; 3) fast acoustic full matrix capture during haptic effects; 4) time-of-flight depth sensor fusion system; 5) phase modulated spherical wave-fronts in acoustic phased-arrays; 6) long wavelength phase modulation of acoustic field for location and tracking; and 7) camera calibration through ultrasonic range sensing.Type: GrantFiled: December 21, 2018Date of Patent: June 14, 2022Assignee: ULTRAHAPTICS IP LTDInventors: Michele Iodice, Benjamin John Oliver Long, Rafel Jibry
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Patent number: 11169610Abstract: A method for object tracking is presented based on the similarity of waveforms recorded at the receiving elements of the array. A rectangular array of acoustic transducers is divided into four quadrants, on the basis that each quadrant contains a receiving element in its center. Each of the four recorded waveforms are compared against each of the remaining waveforms to identify either absolute similarity of the signal characteristics, which would denote absence of the object, or identifying a waveform being the least similar from the rest, hence pointing to a part of the array above which the object is located. Further, source localization algorithms are used for ill-posed scenarios where the distance between receivers is on the same order of magnitude of the dimensions of the tracked object and of the tracking distances.Type: GrantFiled: November 9, 2020Date of Patent: November 9, 2021Assignee: ULTRALEAP LIMITEDInventors: Mantalena Sarafianou, Michele Iodice, Rafel Jibry
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Publication number: 20210141458Abstract: A method for object tracking is presented based on the similarity of waveforms recorded at the receiving elements of the array. A rectangular array of acoustic transducers is divided into four quadrants, on the basis that each quadrant contains a receiving element in its center. Each of the four recorded waveforms are compared against each of the remaining waveforms to identify either absolute similarity of the signal characteristics, which would denote absence of the object, or identifying a waveform being the least similar from the rest, hence pointing to a part of the array above which the object is located. Further, source localization algorithms are used for ill-posed scenarios where the distance between receivers is on the same order of magnitude of the dimensions of the tracked object and of the tracking distances.Type: ApplicationFiled: November 9, 2020Publication date: May 13, 2021Inventors: Mantalena Sarafianou, Michele Iodice, Rafel Jibry
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Publication number: 20200117229Abstract: Phased array systems rely on the production of an exact carrier frequency to function. Reconstructing digital signals by specified amplitude and phase is accomplished explicitly by inducing frequency shifts away from a base frequency implied by phase changes. Shifting the carrier frequency of a digitally controlled phased array while preserving the timing of the individual phase pulses enables more efficient driving of the phased array system when the phase of the drive signals change dynamically in time.Type: ApplicationFiled: October 12, 2019Publication date: April 16, 2020Inventors: Benjamin John Oliver Long, Rafel Jibry
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Publication number: 20190196578Abstract: Described herein are techniques for tracking objects (including human body parts such as a hand), namely: 1) two-state transducer interpolation in acoustic phased-arrays; 2) modulation techniques in acoustic phased-arrays; 3) fast acoustic full matrix capture during haptic effects; 4) time-of-flight depth sensor fusion system; 5) phase modulated spherical wave-fronts in acoustic phased-arrays; 6) long wavelength phase modulation of acoustic field for location and tracking; and 7) camera calibration through ultrasonic range sensing.Type: ApplicationFiled: December 21, 2018Publication date: June 27, 2019Inventors: Michele Iodice, Benjamin John Oliver Long, Brian Kappus, Thomas Andrew Carter, Rafel Jibry, Orestis Georgiou
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Publication number: 20160173273Abstract: Techniques for processing a partial response channel are disclosed. A segment of the signal is matched to one or more of a set of signal patterns. The set of the signal patterns is changed for a subsequent segment of the signal.Type: ApplicationFiled: July 30, 2013Publication date: June 16, 2016Inventors: Rafel Jibry, Robert Morling, Peter Walsh, Christopher Williams
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Publication number: 20160005434Abstract: A method of writing data to a tape on which during a write operation successive data unit groups that comprise a plurality N of data units are written across the tape as N track portions to form N data tracks that extend in a lengthways direction of the tape. The method includes identifying data units written during the write operation that need to be rewritten and writing a rewrite data unit group that contains data units identified as needing to be rewritten. The rewrite data unit group has N track portions written across the tape to form a part of the data tracks. The N track portions contain N-n data units identified as needing to be rewritten and data unit identifier information comprising respective data unit identifiers for the N-n data units contained in at least one list of data unit identifiers. N and n are positive integers.Type: ApplicationFiled: January 30, 2013Publication date: January 7, 2016Inventors: Jonathan Peter Buckingham, Rafel Jibry
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Patent number: 8667235Abstract: Data storage and retrieval methods and apparatus are provided for facilitating data de-duplication for serial-access storage media such as tape. During data storage, input data is divided into a succession of chunks and, for each chunk, a corresponding data item is written to the storage media. The data item comprises the chunk data itself where it is the first occurrence of that data, and otherwise comprises a chunk-data identifier identifying that chunk of subject data. To facilitate reconstruction of the original data on read-back from the storage media a cache (50) is used together with a database (35R), stored on the media, that includes for each duplicated chunk, the location of the corresponding chunk of subject data.Type: GrantFiled: February 11, 2010Date of Patent: March 4, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Christopher Williams, Gregory Trezise, Jonathan Peter Buckingham, Neil Thomas Hutchon, Darren Edward Kent, Andrew Hana, Peter Walsh, Rafel Jibry, Robert Morling
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Patent number: 8654468Abstract: Multi-rate oversampling of analog signals in storage devices is described. A method of processing an analog signal derived from a storage medium in a storage device includes: filtering the analog signal with an anti-alias filter having a fixed cut-off frequency related to a target sampling rate; sampling the analog signal using an over-sampling rate of a plurality of over-sampling rates provided by a variable-rate analog-to-digital converter (ADC) to produce an over-sampled digital signal; and filtering the over-sampled digital signal using a decimation filter of a plurality of decimation filters provided by a digital signal processor (DSP) to produce a digital signal having the target sampling rate.Type: GrantFiled: April 30, 2012Date of Patent: February 18, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Robert Morling, Rafel Jibry
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Publication number: 20130286497Abstract: Multi-rate oversampling of analog signals in storage devices is described. A method of processing an analog signal derived from a storage medium in a storage device includes: filtering the analog signal with an anti-alias filter having a fixed cut-off frequency related to a target sampling rate; sampling the analog signal using an over-sampling rate of a plurality of over-sampling rates provided by a variable-rate analog-to-digital converter (ADC) to produce an over-sampled digital signal; and filtering the over-sampled digital signal using a decimation filter of a plurality of decimation filters provided by a digital signal processor (DSP) to produce a digital signal having the target sampling rate.Type: ApplicationFiled: April 30, 2012Publication date: October 31, 2013Inventors: Robert Morling, Rafel Jibry
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Publication number: 20130285720Abstract: A signal processing device to utilize multiple channel phase detection includes a first phase detector for a first Phase Locked Loop (PLL) of a first channel, the first phase detector to generate phase error information from an input of the first channel. The device also includes a second phase detector of a second PLL of a second channel, the second phase detector to generate phase error information from an input of the second channel. Both the first PLL and the second PLL are to receive phase error information from both the first phase detector and the second phase detector.Type: ApplicationFiled: April 26, 2012Publication date: October 31, 2013Inventor: Rafel Jibry
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Patent number: 8437234Abstract: A signal processing device with dynamic phase detector switching includes a first phase detector of a first type, a second phase detector of a second type, and a mixing device to switch between using output from the first phase detector and output from the second phase detector in real time based on specified changes in an input signal being fed to the signal processing device.Type: GrantFiled: April 25, 2012Date of Patent: May 7, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventor: Rafel Jibry
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Patent number: 8149977Abstract: An apparatus recovers synchronous data samples from an asynchronously over-sampled stream of data samples derived from an input signal the spectral characteristic of which is subject to variation. The apparatus comprises an FIR filter having an input for receiving the asynchronously over-sampled stream of data samples and for producing equalised asynchronous samples. A signal sample reconstruction means reconstructs the synchronous data samples from the equalised asynchronous data samples. An automatic gain control loop is responsive to the reconstructed data samples to apply gain control for producing gain controlled reconstructed samples. A timing recovery means is responsive to the gain controlled reconstructed samples to provide timing information to the signal sample reconstruction means.Type: GrantFiled: January 28, 2009Date of Patent: April 3, 2012Assignee: Hewlett-Packard Development Company, L.P.Inventor: Rafel Jibry
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Publication number: 20120047328Abstract: Data storage and retrieval methods and apparatus are provided for facilitating data de-duplication for serial-access storage media such as tape. During data storage, input data is divided into a succession of chunks and, for each chunk, a corresponding data item is written to the storage media. The data item comprises the chunk data itself where it is the first occurrence of that data, and otherwise comprises a chunk-data identifier identifying that chunk of subject data. To facilitate reconstruction of the original data on read-back from the storage media a cache (50) is used together with a database (35R), stored on the media, that includes for each duplicated chunk, the location of the corresponding chunk of subject data.Type: ApplicationFiled: February 11, 2010Publication date: February 23, 2012Inventors: Christopher Williams, Gregory Trezise, Jonathan Peter Buckingham, Neil Thomas Hutchon, Darren Edward Kent, Andrew Hana, Peter Walsh, Rafel Jibry, Robert Morling
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Publication number: 20100189207Abstract: An apparatus recovers synchronous data samples from an asynchronously over-sampled stream of data samples derived from an input signal the spectral characteristic of which is subject to variation. The apparatus comprises an FIR filter having an input for receiving the asynchronously over-sampled stream of data samples and for producing equalised asynchronous samples. A signal sample reconstruction means reconstructs the synchronous data samples from the equalised asynchronous data samples. An automatic gain control loop is responsive to the reconstructed data samples to apply gain control for producing gain controlled reconstructed samples. A timing recovery means is responsive to the gain controlled reconstructed samples to provide timing information to the signal sample reconstruction means.Type: ApplicationFiled: January 28, 2009Publication date: July 29, 2010Inventor: RAFEL JIBRY
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Patent number: 7720139Abstract: One embodiment of an equalizer circuit has an FIR filter 116 in the asynchronously oversampled domain with a filter coefficient adaptation module that adapts the filter coefficients to the transfer function of a data read channel. Applications include tape drives, drives for optical and magnetic discs as well as receivers. The filter adaptation is performed on the basis of an error signal delivered by a slicer 128 which operates on synchronous samples after timing recovery and sample reconstruction.Type: GrantFiled: July 28, 2005Date of Patent: May 18, 2010Assignee: Hewlett-Packard Development Company, L.P.Inventor: Rafel Jibry
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Patent number: 7613975Abstract: A data read system comprising a read channel for processing a signal, and a diagnostic controller in communication with the read channel. The diagnostic controller is configured to measure at least one metric of the read channel during processing of a signal containing unknown data. The measured metric is then compared against a stored nominal metric and a warning is generated in response to a result of the comparison. In particular, the warning is generated only if the difference between the measured metric and the stored nominal metric exceeds a threshold.Type: GrantFiled: August 31, 2005Date of Patent: November 3, 2009Assignee: Hewlett-Packard Development Company, L.P.Inventors: Rafel Jibry, Peter Arthur Walsh