Patents by Inventor Mehul A. Shah

Mehul A. Shah 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: 10447154
    Abstract: According to certain aspects, the present embodiments are based on an improved switched-capacitor (SC) converter topology that typically does not include an inductor. In particular, the topology includes a ladder SC circuit configured as a cap divider. The cap divider can be used to provide an unregulated output voltage Vout that is a certain fraction (e.g. 2) of input voltage Vin, such as Vin/2 (i.e., duty cycle?50%). In some embodiments of a PWM control scheme for this topology, the PWM OFF pulse is free running, determined by the logic combination of timer and VOUT comparator. The PWM OFF pulse width is measured and used as the reference for a minimum PWM ON timer. The PWM ON pulse is therefore forced to be at least a minimum width that is proportional to the PWM OFF pulse. A UVOV protection window can be added to ignore the minimum PWM ON timer during a load transient.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: October 15, 2019
    Assignee: Renesas Electronics America Inc.
    Inventors: Bin Li, Mehul Shah, Minghua Li, Eric Solie
  • Publication number: 20190305675
    Abstract: The present embodiments relate generally to switched-capacitor (SC) based DC-DC converters, and more particularly to modulation schemes of cap dividers that include ceramic capacitors such as MLCCs. According to certain general aspects, the present embodiments increase the switching frequency at light loads using variable frequency modulation schemes to reduce the voltage difference across the MLCCs. In these and other embodiments, the acoustic noise generated from the MLCCs can be reduced while maintaining excellent light load efficiency. According to certain aspects, this can be achieved with minimal impact on system performance, cost and size.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 3, 2019
    Inventors: Yen-Mo CHEN, Bin LI, Mehul SHAH, Sungkeun LIM
  • Publication number: 20190222031
    Abstract: According to certain aspects, the present embodiments are related to systems and methods providing an autonomous adapter pass through mode in a battery charger. For example, when an adapter is connected to the battery charger, but the system is idling, embodiments allow for power from the adapter to be directly coupled to the battery charger output, and main switching to be stopped, thereby dramatically reducing battery charger current consumption. These and other embodiments provide various circuitry and techniques to ensure that the battery is protected in this mode. According to further aspects, the present embodiments provide for the charger itself to autonomously enter and exit the adapter pass through mode, thereby eliminating the need for excessive processing overhead in components external to the battery charger.
    Type: Application
    Filed: January 16, 2019
    Publication date: July 18, 2019
    Inventors: John H. CARPENTER, JR., Mehul SHAH, Michael Jason HOUSTON
  • Publication number: 20190223079
    Abstract: Systems and methods for providing improved network service allocation. Rather than providing all-or-nothing network service allocation to users, the system can use the mobile country code (MCC) and mobile network code (MNC) to provide access to different services to different users. The services provided to each roaming user, for example, can be negotiated in a roaming agreement with the user's provider. The roaming user can then be provided access to only those services agreed to in the roaming agreement. A home provider can also use multiple MNCs to provide similar service allocation to home users, with each MNC providing a different combination of services. The home provider can also use mobile subscriber identification numbers (MSINs), or ranges of MSINs, to provide service allocation for home users.
    Type: Application
    Filed: June 5, 2018
    Publication date: July 18, 2019
    Inventors: Nassereddine Sabeur, Raymond Thomas Ball, Mehul Shah
  • Patent number: 10275475
    Abstract: A method of operating a data analysis system includes retrieving objects from a data source. Each of the retrieved objects includes (i) data and (ii) metadata describing the data. The method further includes dynamically creating a cumulative schema by, for each object of the retrieved objects: (i) inferring a schema from the object based on the metadata of the object and inferred data types of elements of the data of the object, (ii) creating a unified schema, wherein the unified schema describes both (a) the object described by the inferred schema and (b) a cumulative set of objects described by the cumulative schema, and (iii) storing the unified schema as the cumulative schema. The method further includes exporting the data of each of the retrieved objects to a data warehouse.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 30, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Dimitris Tsirogiannis, Nathan A. Binkert, Stavros Harizopoulos, Mehul A. Shah, Benjamin A. Sowell, Bryan D. Kaplan, Kevin R. Meyer
  • Publication number: 20190098488
    Abstract: An eSIM management framework can serve as an abstraction layer between various partners, mobile network operators, mobile-virtual network operators, and/or enterprises and SIM or eSIM vendors. The eSIM management framework can facilitate real-time SIM and/or eSIM profile provisioning to reduce consumption of network resources. In some examples, an eSIM management framework can facilitate just-in-time client-side provisioning, which can include on-demand generation of an appropriate SIM or eSIM profile.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 28, 2019
    Inventors: Hamza Hydri Syed, Mehul Shah, Nilesh Ranjan
  • Publication number: 20190068597
    Abstract: Systems and methods for extending and re-using an IP multimedia subsystem (IMS) to extend the trust relationship from a closed group of customers of wireless service providers to users of other ecosystems (e.g., GMAIL, FACEBOOK, or YAHOO!) for IMS services are disclosed. Some embodiments include receiving a request from an initiating device to establish a service connection between the initiating device and an endpoint through an Internet Protocol Multimedia Subsystem (IMS) session. The request may include third-party domain credentials (e.g., maintained by a third-party domain) associated with an end-user. The third-party domain credentials can be extracted from the request. Communications with the third-party domain can be used to verify the third-party domain credentials. The IMS session can be established between the initiating device and the endpoint upon verification of the third-party domain credentials.
    Type: Application
    Filed: October 26, 2018
    Publication date: February 28, 2019
    Inventors: Mehul Shah, Cameron Byrne
  • Publication number: 20190053185
    Abstract: Provisioning access to an alternative service provider to a device via e-subscriber identity module (SIM) profile management is described herein. A service provider can determine that a device associated with the service provider is located outside of a home coverage area of the service provider and is not transmitting data via data session(s) established in association with the service provider and send, to the device, a notification including an access mechanism for enabling access to service(s) offered by an alternative service provider. The device can receive the notification from the server(s), determine actuation of the access mechanism, and send, to the alternative service provider, a request for access to the service(s) offered by the alternative service provider. The device can receive an eSIM profile from the alternative service provider, which it can install on the device to enable the device to access the service(s) offered by the alternative service provider.
    Type: Application
    Filed: August 8, 2017
    Publication date: February 14, 2019
    Inventor: Mehul Shah
  • Publication number: 20190020274
    Abstract: According to certain aspects, the present embodiments are based on an improved switched-capacitor (SC) converter topology that typically does not include an inductor. In particular, the topology includes a ladder SC circuit configured as a cap divider. The cap divider can be used to provide an unregulated output voltage Vout that is a certain fraction (e.g. 2) of input voltage Vin, such as Vin/2 (i.e., duty cycle?50%). In some embodiments of a PWM control scheme for this topology, the PWM OFF pulse is free running, determined by the logic combination of timer and VOUT comparator. The PWM OFF pulse width is measured and used as the reference for a minimum PWM ON timer. The PWM ON pulse is therefore forced to be at least a minimum width that is proportional to the PWM OFF pulse. A UVOV protection window can be added to ignore the minimum PWM ON timer during a load transient.
    Type: Application
    Filed: July 9, 2018
    Publication date: January 17, 2019
    Applicant: Renesas Electronics America Inc.
    Inventors: Bin LI, Mehul SHAH, Minghua LI, Eric SOLIE
  • Patent number: 10178435
    Abstract: Methods and apparatus for providing unified access to interactive media applications and services in a network. In one embodiment, the network comprises a content-based network such as a cable television or satellite network, and the applications are disposed at the network headend. A servlet is provided to facilitate communication between the applications and client devices. The servlet acts as a proxy for applications utilizing a different content format than the client devices. The applications obtain data from e.g., an internet host server via a gateway device. The client application(s) may comprise Enhanced TV Binary Interchange Format (EBIF) pages, and are configured so as to permit use via a common interface (e.g., the user's set top box and television display). These client applications enable a user to, for example, search the internet for data relating to displayed content, post and navigate micro-blogs, instant messaging or SMS, making telephone calls (e.g.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: January 8, 2019
    Assignee: Time Warner Cable Enterprises LLC
    Inventors: Vipul Patel, Scott Miller, Mehul Shah, Jian Yu
  • Publication number: 20180352422
    Abstract: Systems and methods for providing greater granularity and updatability to network profiles. The system can include a subscription management application program interface (SMA) to receive setup information, user preferences, software, hardware, and firmware updates from a user cell phone, computer, or smart device (collectively, end-point) regarding what features the user wishes to access. The SMA can access a profile lookup table to identify a profile with the requested attributes. A subscription management module (SMM) can receive this information from the SMA and retrieved the profile requested by the SMA from a repository of profiles. The SMM can then download or activate the profile with features that match, or most closely match, the requested features onto the end-point. The system can enable providers to ship phones with no network profiles. The system can also enable profiles to be updated based on changes in user preferences, updates, or other changes.
    Type: Application
    Filed: July 19, 2018
    Publication date: December 6, 2018
    Inventors: Mehul Shah, Hamza Hydri Syed
  • Patent number: 10148655
    Abstract: Systems and methods for extending and re-using an IP multimedia subsystem (IMS) to extend the trust relationship from a closed group of customers of wireless service providers to users of other ecosystems (e.g., GMAIL, FACEBOOK, or YAHOO!) for IMS services are disclosed. Some embodiments include receiving a request from an initiating device to establish a service connection between the initiating device and an endpoint through an Internet Protocol Multimedia Subsystem (IMS) session. The request may include third-party domain credentials (e.g., maintained by a third-party domain) associated with an end-user. The third-party domain credentials can be extracted from the request. Communications with the third-party domain can be used to verify the third-party domain credentials. The IMS session can be established between the initiating device and the endpoint upon verification of the third-party domain credentials.
    Type: Grant
    Filed: June 14, 2017
    Date of Patent: December 4, 2018
    Assignee: T-Mobile USA, Inc.
    Inventors: Mehul Shah, Cameron Byrne
  • Patent number: 10114846
    Abstract: A balanced distribution of sort order values may be implemented for a multi-column sort order of a database table. Columns of the database table to be included in the multi-column sort order may be identified. Some columns containing string data values may be converted to equally-sized integer data values. The data values of columns may be evaluated to determine buckets representing the ranges of data values within the columns for depth-balanced histograms of the columns. Multi-column sort order values may be generated for individual entries in the database table according to bucket values assigned to the buckets that include the columns values of the individual entries. The entries of the database table may then be stored according to a sorted ordering of multi-column sort order values for the entries.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: October 30, 2018
    Assignee: Amazon Technologies, Inc.
    Inventors: Mehul Shah, Jakub Kulesza, James Thomas Kiraly, Benjamin Albert Sowell, Anurag Windlass Gupta
  • Patent number: 10095732
    Abstract: A method of operating a query system includes retrieving objects from a data source. Each of the retrieved objects includes (i) data and (ii) metadata describing the data. The method further includes dynamically creating a cumulative schema. The dynamically creating includes, for each object of the retrieved objects, (i) inferring a schema from the object based on the metadata of the object and inferred data types of elements of the data of the object, (ii) creating a unified schema, and (iii) storing the unified schema as the cumulative schema. The unified schema describes both (a) the object described by the inferred schema and (b) a cumulative set of objects described by the cumulative schema. The method further includes storing the data of each of the retrieved objects in a storage service.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: October 9, 2018
    Inventors: Benjamin A. Sowell, Nathan A. Binkert, Stavros Harizopoulos, Mehul A. Shah, Dimitrios Tsirogiannis
  • Patent number: 10057761
    Abstract: Systems and methods for providing greater granularity and updatability to network profiles. The system can include a subscription management application program interface (SMA) to receive setup information, user preferences, software, hardware, and firmware updates from a user cell phone, computer, or smart device (collectively, end-point) regarding what features the user wishes to access. The SMA can access a profile lookup table to identify a profile with the requested attributes. A subscription management module (SMM) can receive this information from the SMA and retrieved the profile requested by the SMA from a repository of profiles. The SMM can then download or activate the profile with features that match, or most closely match, the requested features onto the end-point. The system can enable providers to ship phones with no network profiles. The system can also enable profiles to be updated based on changes in user preferences, updates, or other changes.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: August 21, 2018
    Assignee: T-Mobile USA, Inc.
    Inventors: Mehul Shah, Hamza Hydri Syed
  • Publication number: 20180173774
    Abstract: History for data objects may be maintained to detect data events. An indication of an Extract, Transform, Load (ETL) process applied to one or more source data objects to generate one or more transformed data objects may be received. History for the source data objects may be updated to include the transformed data objects and the ETL process that generated the transformed data objects. An evaluation of the update may be performed to determine whether an event associated with the data lineage is triggered. If the event is triggered, a notification of the event may be sent to one or more subscribers for the event.
    Type: Application
    Filed: December 20, 2016
    Publication date: June 21, 2018
    Applicant: Amazon Technologies, Inc.
    Inventors: GEORGE STEVEN MCPHERSON, MEHUL A. SHAH, PRAJAKTA DATTA DAMLE, GOPINATH DUDDI, ANURAG WINDLASS GUPTA
  • Publication number: 20180150548
    Abstract: Recognizing unknown data objects may be implemented for data objects stored in a data store. Data objects that are identified as unknown may be accessed to retrieve a portion of the data object. Different representations of the data object may be generated for recognizing different data schemas. An analysis of the representations may be performed to identify a data schema for the unknown data object. The data schema may be stored in a metadata store for the unknown data object.
    Type: Application
    Filed: December 20, 2016
    Publication date: May 31, 2018
    Applicant: Amazon Technologies, Inc.
    Inventors: MEHUL A. SHAH, GEORGE STEVEN MCPHERSON, PRAJAKTA DATTA DAMLE, GOPINATH DUDDI, ANURAG WINDLASS GUPTA
  • Publication number: 20180150528
    Abstract: Data transformation workflows may be generated to transform data objects. A source data schema for a data object and a target data format or target data schema for a data object may be identified. A comparison of the source data schema and the target data format or schema may be made to determine what transformations can be performed to transform the data object into the target data format or schema. Code to execute the transformation operations may then be generated. The code may be stored for subsequent modification or execution.
    Type: Application
    Filed: December 20, 2016
    Publication date: May 31, 2018
    Applicant: Amazon Technologies, Inc.
    Inventors: MEHUL A. SHAH, GEORGE STEVEN MCPHERSON, PRAJAKTA DATTA DAMLE, GOPINATH DUDDI, ANURAG WINDLASS GUPTA, BENJAMIN ALBERT SOWELL, BOHOU LI
  • Publication number: 20180150529
    Abstract: Extract, Transform, Load (ETL) processing may be initiated by detected events. A trigger event may be associated with an ETL process apply one or more transformations to a source data object. The trigger event may be detected for the ETL process and evaluated with respect to one or more execution conditions for the ETL process. If the execution conditions for the ETL process are satisfied, then the ETL process may be executed. At least some of the source data object may be obtained, the one or more transformations of the ETL process may be applied, and one or more transformed data objects may be stored.
    Type: Application
    Filed: December 20, 2016
    Publication date: May 31, 2018
    Applicant: Amazon Technologies, Inc.
    Inventors: GEORGE STEVEN MCPHERSON, MEHUL A. SHAH, PRAJAKTA DATTA DAMLE, GOPINATH DUDDI, ANURAG WINDLASS GUPTA
  • Publication number: 20180109134
    Abstract: The present embodiments relate generally to methods and apparatuses for providing supplemental output voltage support in a battery charger. According to certain aspects, to provide supplemental power in a system with a weak battery and high current load, embodiments provide a trigger value to alert the system and a pre-trigger to allow saving current. Some embodiments use current information to predict the need for supplemental mode. These and other embodiments provide prepared biasing for faster response times, and are more precise than monitoring voltage alone. These and other embodiments further preferably provide support for providing supplemental system power while protecting attached external devices.
    Type: Application
    Filed: July 13, 2017
    Publication date: April 19, 2018
    Inventors: John CARPENTER, Mehul SHAH