Patents by Inventor Subir K. Biswas
Subir K. Biswas 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: 20240130653Abstract: A urination monitoring system for a commode includes a housing coupled to the exterior of the commode, a vibration sensor disposed within the housing generating a vibration signal corresponding to vibration of an exterior of the commode, a signal shaping circuit coupled to the vibration sensor generating a processed vibration signal, a controller comprising a trained classifier coupled to the sensor receiving the processed signal and determining a urinary episode characteristic therefrom corresponding to at least one of a urinary frequency, urinary flow strength and duration, a number of episodes within a urination episode, a low strength and duration of sub-episodes within the episode and a display coupled to the controller generating an output the urinary episode characteristic.Type: ApplicationFiled: October 14, 2023Publication date: April 25, 2024Inventor: Subir K. BISWAS
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Patent number: 11456902Abstract: A packet position modulation system includes a node configured to transmit a plurality of packets at corresponding time intervals. The node is configured to adjust, for at least one packet of the plurality of packets, the corresponding time interval to transmit the at least one packet. The system includes a base station configured to receive the plurality of packets from the node at corresponding time intervals, determine a difference between a previous time that a previous packet of the plurality of packets was received and a present time that a present packet of the plurality of packets was received, and recover coded data from the present packet based on the difference.Type: GrantFiled: June 18, 2020Date of Patent: September 27, 2022Assignee: Board of Trustees of Michigan State UniversityInventors: Subir K. Biswas, Dezhi Feng, Saptarshi Das
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Patent number: 11295547Abstract: A living object detection system may detect the interaction between an observer and a target object. The system may include an object sensor device, an object classification data unit, and an object detection module. The object sensor device may be attachable to the observer and include an ultrasonic sensor for sensing distance and a passive infrared sensor for sensing temperature. The object classification data unit may store predetermined object classifiers that identifies an object as a living object or non-living object. The object detection module may determine the target object as a living object or a non-living object based on the object classifiers stored in the object classification data unit and on a physical feature set of the target object, where the physical feature set may include distance and temperature parameters.Type: GrantFiled: April 13, 2017Date of Patent: April 5, 2022Assignee: Board of Trustees of Michigan State UniversityInventor: Subir K. Biswas
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Publication number: 20200403831Abstract: A packet position modulation system includes a node configured to transmit a plurality of packets at corresponding time intervals. The node is configured to adjust, for at least one packet of the plurality of packets, the corresponding time interval to transmit the at least one packet. The system includes a base station configured to receive the plurality of packets from the node at corresponding time intervals, determine a difference between a previous time that a previous packet of the plurality of packets was received and a present time that a present packet of the plurality of packets was received, and recover coded data from the present packet based on the difference.Type: ApplicationFiled: June 18, 2020Publication date: December 24, 2020Applicant: Board of Trustees of Michigan State UniversityInventors: Subir K. BISWAS, Dezhi FENG, Saptarshi DAS
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Patent number: 10051663Abstract: A method and device for transmitting data between wireless devices includes: generating and transmitting, by a first device, a data cluster signal having a signal identifier, a completion marker, and at least one silence interval provided between the signal identifier and the completion marker; receiving, by a second device, the data cluster signal; identifying, by the second device, a signal type and a transmission completion of the signal received; and decoding, by the second device, the silence interval into the data based on the signal type and a duration of the silence interval.Type: GrantFiled: December 13, 2016Date of Patent: August 14, 2018Assignee: Board of Trustees of Michigan State UniversityInventors: Subir K. Biswas, Dezhi Feng, Faezeh Hajiaghajani Memar, Saptarshi Das
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Publication number: 20170323155Abstract: A living object detection system may detect the interaction between an observer and a target object. The system may include an object sensor device, an object classification data unit, and an object detection module. The object sensor device may be attachable to the observer and include an ultrasonic sensor for sensing distance and a passive infrared sensor for sensing temperature. The object classification data unit may store predetermined object classifiers that identifies an object as a living object or non-living object. The object detection module may determine the target object as a living object or a non-living object based on the object classifiers stored in the object classification data unit and on a physical feature set of the target object, where the physical feature set may include distance and temperature parameters.Type: ApplicationFiled: April 13, 2017Publication date: November 9, 2017Applicant: Board of Trustees of Michigan State UniversityInventor: Subir K. BISWAS
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Publication number: 20170171889Abstract: A method and device for transmitting data between wireless devices includes: generating and transmitting, by a first device, a data cluster signal having a signal identifier, a completion marker, and at least one silence interval provided between the signal identifier and the completion marker; receiving, by a second device, the data cluster signal; identifying, by the second device, a signal type and a transmission completion of the signal received; and decoding, by the second device, the silence interval into the data based on the signal type and a duration of the silence interval.Type: ApplicationFiled: December 13, 2016Publication date: June 15, 2017Inventors: Subir K. BISWAS, Dezhi FENG, Faezeh HAJIAGHAJANI MEMAR, Saptarshi DAS
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Patent number: 6535487Abstract: A technique for reducing ATM call blocking is provided that splits wideband connections into multiple low-bandwidth sub-connections and routing them independently through the network. Fragmented network bandwidth is used for supporting calls which are otherwise blocked by conventional routing. A detailed cell-level design for the split scheduling algorithms is provided. A system for implementing splitting without requiring any protocol changes within the network is provided. Such a system modifies the control plane protocols only within the end-stations.Type: GrantFiled: June 17, 1998Date of Patent: March 18, 2003Assignee: NEC USA, Inc.Inventors: Subir K. Biswas, Rauf Izmailov, Bhaskar Sengupta
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Publication number: 20020097725Abstract: An overlay model to let multiple VPNs share the same physical switches while maintaining their individual resource and administrative boundaries. A clean resource and protocol management structure within the ATM switches is provided for the overlay model. An architectural framework for such resource and protocol management within multiprocessor ATM switches is provided. Multiple protocols are supported both at the switch level and at the port level. A VPN on a switch can be configured with any of the existing control protocols available on that switch. This protocol management mechanism is then extended for providing intra-VPN multiprotocol support where a single VPN is allowed to use multiple control protocols on the same switch port. A mechanism for Network Management System (NMS) coordinated VPN creation and configuration is provided.Type: ApplicationFiled: February 26, 2002Publication date: July 25, 2002Applicant: NEC CORPORATIONInventors: Rajiv Dighe, Subir K. Biswas, Vasanthi Thirumalai, Kojiro Watanabe, Gopalakrishnan Ramamurthy
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Patent number: 6125116Abstract: The present invention pertains to message sets for use in a flexible programmable multiplexer for accessing an Asynchronous Transfer Mode (ATM) network. The access multiplexer uses a functional separation of line related functions and protocol related functions. Line interface cards perform line related functions. A message set for use in such a multiplexing system that uses a functional separation of line and protocol related functions is provided. The message set includes a general message, a hello message, a configuration message, a line stabilized message, an identify remote message, an identify remote acknowledgement message, a reset remote message, a report statistics message, a report statistics acknowledgement message, a loopback test message and a dynamic rate adaptation message. A flexible programmable multiplexer that uses the message set is also provided.Type: GrantFiled: November 4, 1998Date of Patent: September 26, 2000Assignee: NEC CorporationInventors: Rajiv Dighe, Subir K. Biswas, Vasanthi Thirumalai, Kojiro Watanabe, Gopalakrishnan Ramamurthy
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Patent number: 5974036Abstract: Mobility in a wireless ATM network is accomplished by use of hand-off control protocols. A mobile terminal signals a first base station that a hand-off is to occur. In a first preferred embodiment the first base station signals a second base station requesting a hand-off. After the second base station signals the first base station that a datapath link is available from a hand-off switch to the second base station, the hand-off switch causes the datapath to change from the first base station to the second base station and the first base station signals the mobile terminal to commence communication with the second base station. In a second preferred embodiment, the mobile terminal signals a first base station that a hand-off is to occur. The first base station signals a second base station requesting a hand-off. At the same time a datapath link is established between the first and second base stations.Type: GrantFiled: December 24, 1996Date of Patent: October 26, 1999Assignee: NEC USA, Inc.Inventors: Arup Acharya, Jun Li, Dipankar Raychaudhuri, Ruixi Yuan, Subir K. Biswas