Patents by Inventor Siddharth Joshi
Siddharth Joshi 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: 20250112189Abstract: An electronic device includes a set of semiconductor layers defining a set of semiconductor mesas. A first dielectric abuts the set of semiconductor layers at a perimeter of the set of semiconductor layers. A second dielectric is disposed on the set of semiconductor mesas. A set of conductors is routed in or on the second dielectric. The set of conductors is electrically connected to at least one active device defined in at least one semiconductor mesa of the set of semiconductor mesas. The set of conductors is configured to route electrical signals to or from the at least one semiconductor mesa, and the set of conductors includes a set of hybrid bonding pads on the second dielectric.Type: ApplicationFiled: May 23, 2024Publication date: April 3, 2025Inventors: Nicolas Hotellier, Christophe Verove, Amaud Laflaquiere, David Coulon, Siddharth Joshi, Stephane Zoll, Keith Lyon, Cristiano L. Niclass
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Publication number: 20250102631Abstract: Disclosed are electronic devices that include an array of light emitting diodes and photosensors formed in a single semiconductor chip. The light emitting diodes may be structured as vertical exterior cavity surface-emitting laser diodes (VECSELs). The photosensors may be formed as resonant cavity photosensors (RCPDs). The VECSELs and the RCPDs of the array may be formed in a common set of semiconductor layers of the single semiconductor chip and separated by isolation regions formed in the common set of semiconductor layers. Also disclosed are dual chip transmitter-receiver systems including a first semiconductor chip having an array of both VECSELs and RCPDs formed in common set of semiconductor layers, and a second semiconductor chip electrically connected to the first semiconductor chip and including control circuitry to enable laser emission from the VECSELs and light reception by the RCPDs.Type: ApplicationFiled: May 23, 2024Publication date: March 27, 2025Inventors: Siddharth Joshi, Arnaud Laflaquiere, Nicolas Hotellier, Cristiano L. Niclass, Keith Lyon
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Publication number: 20250105594Abstract: Embodiments described herein include an optoelectronic sensing device having a vertical cavity surface emitting laser (VCSEL), a resonance cavity photodetector (RCPD), and a tunnel junction. The VCSEL is at least partly defined by a first set of semiconductor layers disposed on a substrate. The first set of semiconductor layers includes a first active region. The VCSEL is configured to emit laser light towards the substrate, upon application of a first bias voltage, and undergo self-mixing interference upon reception of reflections or backscatters thereof. The RCPD is vertically adjacent to the VCSEL and is at least partly defined by a second set of semiconductor layers disposed on the substrate. The second set of semiconductor layers includes a second active region. The RCPD is configured to detect, upon application of a second bias voltage, the self-mixing interference. The tunnel junction is disposed between the first active region and the second active region.Type: ApplicationFiled: September 20, 2024Publication date: March 27, 2025Inventors: Pengfei Qiao, Fei Tan, Tong Chen, Qinghong Du, Siddharth Joshi, Nicolas Hotellier, Alexander Hein, Pierre-Antoine Delean
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Publication number: 20240372324Abstract: A laser assembly includes a set of one or more substrates having a first surface opposite a second surface. The set of one or more substrates defines a resonant cavity extension. The resonant cavity extension extends into the set of one or more substrates from an opening in the first surface. The laser assembly further includes a first reflector disposed within the resonant cavity extension and configured to reflect at least one wavelength of electromagnetic radiation received through the opening back through the opening; a laser having an active region configured to generate the at least one wavelength of electromagnetic radiation; and a second reflector. The active region is disposed in a resonant cavity extending between the first reflector and the second reflector. The resonant cavity includes the resonant cavity extension.Type: ApplicationFiled: May 4, 2023Publication date: November 7, 2024Inventors: Chin-Han Lin, Nicolas Hotellier, Alexander Hein, Siddharth Joshi, Fei Tan
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Publication number: 20240372328Abstract: An optoelectronic device includes a silicon interposer and an array of resonant cavity mesas. The array of resonant cavity mesas is monolithically integrated in a set of one or more epitaxial layers and flip-chip bonded to the silicon interposer. The array of resonant cavity mesas includes a first subset of resonant cavity mesas connected to a first subset of conductors of the silicon interposer and biased to a first electrical polarity, and a second subset of resonant cavity mesas connected to a second subset of conductors of the silicon interposer. The second subset of resonant cavity mesas provides electrostatic discharge (ESD) protection for the first subset of resonant cavity mesas.Type: ApplicationFiled: May 5, 2023Publication date: November 7, 2024Inventors: Siddharth Joshi, Nicolas Hotellier, Fei Tan, Anne-Laure Bavencove, Chin-Han Lin, Arnaud Laflaquiere
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Patent number: 12074770Abstract: The communication network system according to the present disclosure comprises: a life cycle manager (LCM) that transmits a request for virtual network function (VNF) setting to one or more clouds; and a cloud adapter that mediates communication between the LCM and the cloud to which the request is addressed, The cloud adapter creates, based on a response to the request from the cloud to which the request is addressed, a common-format management ID independent of the type of the cloud to which the request is addressed, and transmits the management ID to the LCM. The LCM may transmit a query regarding a processing status of the request to the cloud adapter, including the management ID. The cloud adapter may recognize the cloud to which the query is addressed on the basis of the management ID and query the cloud to which the query is addressed such that the cloud returns the processing status.Type: GrantFiled: June 17, 2022Date of Patent: August 27, 2024Assignee: RAKUTEN MOBILE, INC.Inventors: Yidao Wang, Siddharth Joshi, Takatsugu Ishikawa
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Publication number: 20240223460Abstract: The communication network system according to the present disclosure comprises: a life cycle manager (LCM) that transmits a request for virtual network function (VNF) setting to one or more clouds; and a cloud adapter that mediates communication between the LCM and the cloud to which the request is addressed, The cloud adapter creates, based on a response to the request from the cloud to which the request is addressed, a common-format management ID independent of the type of the cloud to which the request is addressed, and transmits the management ID to the LCM. The LCM may transmit a query regarding a processing status of the request to the cloud adapter, including the management ID. The cloud adapter may recognize the cloud to which the query is addressed on the basis of the management ID and query the cloud to which the query is addressed such that the cloud returns the processing status.Type: ApplicationFiled: June 17, 2022Publication date: July 4, 2024Applicant: RAKUTEN MOBILE, INC.Inventors: Yidao WANG, Siddharth JOSHI, Takatsugu ISHIKAWA
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Publication number: 20240184640Abstract: A method for parallel deployment of telecommunication applications may be provided. The method, executed by a cloud adaptor, may include receiving a network topology, a resource status of each of one or more available clusters, and a cluster context associated with the each of the one or more available clusters. The method may include spawning a plurality of threads wherein each of the plurality of threads may be associated with a respective cluster and a respective task to be executed on the respective cluster, and wherein the respective task may be associated with a respective function to be performed. The method may include setting the cluster context associated with the respective cluster to the respective function to be performed associated with the respective task to be executed on the respective cluster; and directing parallel execution of the plurality of threads across the one or more available clusters.Type: ApplicationFiled: April 28, 2022Publication date: June 6, 2024Applicant: RAKUTEN MOBILE, INC.Inventors: Kranthi MOLLETI, Siddharth JOSHI
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Publication number: 20240088623Abstract: An integrated emitter device incudes a silicon die, including an array of control circuits, and a plurality of integrated emitter modules disposed on the silicon die. Each integrated emitter module includes a single epitaxial stack comprising multiple layers of III-V semiconductor compounds, which define a vertical emitter including an optically active layer and upper and lower distributed Bragg reflectors (DBRs) on opposing sides of the optically active layer, and a transistor in series with the vertical emitter and including a terminal in contact with a respective one of the control circuits, so as to actuate the vertical emitter in response to a control signal applied to the terminal by the respective one of the control circuits.Type: ApplicationFiled: September 14, 2022Publication date: March 14, 2024Inventors: Siddharth Joshi, Keith Lyon, Arnaud Laflaquière, Christophe Verove
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Publication number: 20240079440Abstract: A multispectral sensing device includes a first die, including silicon, which is patterned to define a first array of sensor elements, which output first electrical signals in response to optical radiation that is incident on the device in a band of wavelengths less than 1000 nm that is incident on the front side of the first die. A second die has its first side bonded to the back side of the first die and includes a photosensitive material and is patterned to define a second array of sensor elements, which output second electrical signals in response to the optical radiation that is incident on the device in a second band of wavelengths greater than 1000 nm that passes through the first die and is incident on the first side of the second die. Readout circuitry reads the first electrical signals and the second electrical signals serially out of the device.Type: ApplicationFiled: September 6, 2022Publication date: March 7, 2024Inventors: Oray O. Cellek, Fei Tan, Gershon Rosenblum, Hong Wei Lee, Cheng-Ying Tsai, Jae Y. Park, Christophe Verove, John L Orlowski, Siddharth Joshi, Xiangli Li, David Coulon, Xiaofeng Fan, Keith Lyon, Nicolas Hotellier, Arnaud Laflaquière
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Publication number: 20230085957Abstract: An optoelectronic device includes a base chip, including a silicon die having a photodiode disposed at its front surface and a first anode contact and a first cathode contact disposed on the front surface. A laser diode driver circuit on the silicon die supplies an electrical drive signal between the first anode contact and the first cathode contact. An emitter chip includes a III-V semiconductor die, which is mounted with its front side facing toward the front surface of the silicon die. A second anode contact and a second cathode contact are disposed on the front side of the III-V semiconductor die in electrical communication with the first anode contact and the first cathode contact. A VCSEL is disposed on the front side of the III-V semiconductor die in coaxial alignment with the photodiode and receives the drive signal from the second anode contact and the second cathode contact.Type: ApplicationFiled: July 18, 2022Publication date: March 23, 2023Inventors: Nicolas Hotellier, Arnaud Laflaquière, Christophe Verove, Fei Tan, Siddharth Joshi
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Patent number: 11443232Abstract: Techniques for active learning-based data labeling are described. An active learning-based data labeling service enables a user to build and manage large, high accuracy datasets for use in various machine learning systems. Machine learning may be used to automate annotation and management of the datasets, increasing efficiency of labeling tasks and reducing the time required to perform labeling. Embodiments utilize active learning techniques to reduce the amount of a dataset that requires manual labeling. As subsets of the dataset are labeled, this label data is used to train a model which can then identify additional objects in the dataset without manual intervention. The label data can be added to an augmented manifest, the augmented manifest can be used to filter the dataset to perform further labeling jobs on the same or different subsets of the dataset.Type: GrantFiled: March 29, 2019Date of Patent: September 13, 2022Assignee: Amazon Technologies, Inc.Inventors: Zahid Rahman, Wei Xiao, Stefano Stefani, Rahul Sharma, Siddharth Joshi
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Publication number: 20210212564Abstract: An assembly and system for collection and assessment of physiological data is provided. The assembly includes a physiological data acquisition module that may be used in combination with a head harness for the collection, recordation, storage and transmission of quality physiological data. The assembly integrates easy to use, self-applied electrodes in a user-friendly system resulting in less data artifacts than commonly seen in conventional methods and techniques for collecting physiological data. The assembly and system captures high-quality physiological data for display, storage, processing and analysis.Type: ApplicationFiled: March 26, 2021Publication date: July 15, 2021Inventors: Philip Low, Yu M. Chi, Siddharth Joshi, Christopher Uebelher, Yvon A. Dubois, Kevin Liu
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Patent number: 11048979Abstract: Techniques for active learning-based data labeling are described. An active learning-based data labeling service enables a user to build and manage large, high accuracy datasets for use in various machine learning systems. Machine learning may be used to automate annotation and management of the datasets, increasing efficiency of labeling tasks and reducing the time required to perform labeling. Embodiments utilize active learning techniques to reduce the amount of a dataset that requires manual labeling. As subsets of the dataset are labeled, this label data is used to train a model which can then identify additional objects in the dataset without manual intervention. The process may continue iteratively until the model converges. This enables a dataset to be labeled without requiring each item in the dataset to be individually and manually labeled by human labelers.Type: GrantFiled: March 29, 2019Date of Patent: June 29, 2021Assignee: Amazon Technologies, Inc.Inventors: Fedor Zhdanov, Siddharth Joshi, Sankalp Srivastava, Rahul Sharma, Pietro Perona, Sindhu Chejerla
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Patent number: 10574257Abstract: An apparatus may include a delta sigma modulator. A first portion of the delta sigma modulator may form a digital predictor while a second portion of the delta sigma modulator may form an analog approximator. An output of the analog approximator may be coupled with a quantizer. The digital predictor, the analog approximator, and the quantizer may form a digitizing loop configured to convert an analog input into a digital output. The digital predictor may be configured to generate, based on a polarity of one or more digital outputs from the quantizer, a digital prediction of an expected amplitude of the analog input. The quantizer may be configured to respond to the digital prediction by adjusting a dynamic range of the digitizing loop including by changing a quantization step size used by the quantizer to quantize the analog input. Related methods are also provided.Type: GrantFiled: February 8, 2019Date of Patent: February 25, 2020Assignee: The Regents of the University of CaliforniaInventors: Chul Kim, Siddharth Joshi, Gert Cauwenberghs
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Publication number: 20190253069Abstract: An apparatus may include a delta sigma modulator. A first portion of the delta sigma modulator may form a digital predictor while a second portion of the delta sigma modulator may form an analog approximator. An output of the analog approximator may be coupled with a quantizer. The digital predictor, the analog approximator, and the quantizer may form a digitizing loop configured to convert an analog input into a digital output. The digital predictor may be configured to generate, based on a polarity of one or more digital outputs from the quantizer, a digital prediction of an expected amplitude of the analog input. The quantizer may be configured to respond to the digital prediction by adjusting a dynamic range of the digitizing loop including by changing a quantization step size used by the quantizer to quantize the analog input. Related methods are also provided.Type: ApplicationFiled: February 8, 2019Publication date: August 15, 2019Inventors: Chul Kim, Siddharth Joshi, Gert Cauwenberghs
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Patent number: 9929535Abstract: An emitting device is intended for delivering photons with a chosen wavelength. This emitting device includes an InP substrate with a directly modulated laser arranged for generating photons modulated by a non-return-to-zero modulation to produce data to be transmitted, a passive ring resonator monolithically integrated with the directly modulated laser and having a resonance amongst several ones that is used for filtering a zero level induced by the data modulation, and a tuning means arranged along the directly modulated laser and/or around the ring resonator to tune the photon wavelength and/or the ring resonator resonance used for filtering.Type: GrantFiled: April 15, 2015Date of Patent: March 27, 2018Assignee: Alcatel LucentInventors: Nicolas Chimot, Francois Lelarge, Siddharth Joshi
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Patent number: 9876518Abstract: Systems, methods, and articles of manufacture, including computer program products, are provided for capacitive passive mixer baseband receivers with broadband harmonic rejection. In some embodiments, an apparatus is provided. The apparatus includes a receiver configured to receive an input signal and generate, based on the input signal, an in-phase portion and a quadrature phase portion. The apparatus further includes a harmonic rejection mixer comprising a plurality of capacitors, the plurality of capacitors encoded with a plurality of capacitance values, the harmonic rejection mixer configured to reduce harmonics in the input signal based on applying a quantity of the plurality of capacitance values to the input signal. The apparatus further includes a plurality of switches configured to activate the plurality of capacitors, the quantity of the plurality of predetermined capacitance values applied to the input signal based on a quantity of the plurality of capacitors that are active.Type: GrantFiled: September 22, 2016Date of Patent: January 23, 2018Assignee: The Regents of the University of CaliforniaInventors: Chul Kim, Chris Michael Thomas, Gert Cauwenberghs, Lawrence E. Larson, Siddharth Joshi, Sohmyung Ha
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Publication number: 20170141805Abstract: Systems, methods, and articles of manufacture, including computer program products, are provided for capacitive passive mixer baseband receivers with broadband harmonic rejection. In some embodiments, an apparatus is provided. The apparatus includes a receiver configured to receive an input signal and generate, based on the input signal, an in-phase portion and a quadrature phase portion. The apparatus further includes a harmonic rejection mixer comprising a plurality of capacitors, the plurality of capacitors encoded with a plurality of capacitance values, the harmonic rejection mixer configured to reduce harmonics in the input signal based on applying a quantity of the plurality of capacitance values to the input signal. The apparatus further includes a plurality of switches configured to activate the plurality of capacitors, the quantity of the plurality of predetermined capacitance values applied to the input signal based on a quantity of the plurality of capacitors that are active.Type: ApplicationFiled: September 22, 2016Publication date: May 18, 2017Inventors: Chul Kim, Chris Michael Thomas, Gert Cauwenberghs, Lawrence E. Larson, Siddharth Joshi, Sohmyung Ha
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Publication number: 20170040773Abstract: An emitting device (1) is intended for delivering photons with a chosen wavelength. This emitting device (1) comprises an InP substrate (2) with a directly modulated laser (3) arranged for generating photons modulated by a non-return-to-zero modulation to produce data to be transmitted, a passive ring resonator (4) monolithically integrated with the directly modulated laser (3) and having a resonance amongst several ones that is used for filtering a zero level induced by the data modulation, and a tuning means (5) arranged along the directly modulated laser (3) and/or around the ring resonator (4) to tune the photon wavelength and/or the ring resonator resonance used for filtering.Type: ApplicationFiled: April 15, 2015Publication date: February 9, 2017Inventors: Nicolas CHIMOT, Francois LEARGE, Siddharth JOSHI