Patents by Inventor Manisha Pandya
Manisha Pandya 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: 20190260282Abstract: A primary resonant flyback converter may include a primary winding, a resonant capacitor in series with the primary winding, a secondary winding magnetically coupled to the primary winding, and an output electrically coupled to the secondary winding. A main switch may be operated to energize the primary winding when closed and transfer energy stored in the primary winding to the secondary winding when open. An auxiliary switch may be configured to switch complimentarily to the main switch, thereby allowing a resonant current to circulate through the primary winding and capacitor. Switch timing may be controlled to produce a desired output voltage. The converter may also include an input inductor that receives an input voltage, presenting an improved power factor to an AC input power source and in conjunction with the switching devices boosts a rectified AC input voltage to a DC voltage bus of the converter.Type: ApplicationFiled: April 30, 2019Publication date: August 22, 2019Inventors: InHwan Oh, Abby Cherian, Manisha Pandya
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Patent number: 10170974Abstract: A primary resonant flyback converter may include a primary winding, a resonant capacitor in series with the primary winding, a secondary winding magnetically coupled to the primary winding, and an output electrically coupled to the secondary winding. A main switch may be operated to energize the primary winding when closed and transfer energy stored in the primary winding to the secondary winding when open. An auxiliary switch may be configured to switch complimentarily to the main switch, thereby allowing a resonant current to circulate through the primary winding and capacitor. Switch timing may be controlled to produce a desired output voltage. The switching frequency may be varied as a function of output load, input voltage and/or voltage ripple on a DC bus of the converter. Switching may also be temporarily disabled responsive to a decrease in output load and re-enabled responsive to an increase in output load.Type: GrantFiled: September 28, 2017Date of Patent: January 1, 2019Assignee: Apple Inc.Inventors: InHwan Oh, Abby Cherian, Manisha Pandya
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Patent number: 9572777Abstract: The invention relates to a topical pharmaceutical composition for burn treatment and microbial infections on human beings or animals. The pharmaceutical composition comprises 0.1% w/w to 1.0% w/w of an antimicrobial drug, i.e., silver sulfadiazine and 0.2% w/w antiseptic, i.e., chlorhexidine gluconate, wherein silver sulfadiazine is in nanonized form.Type: GrantFiled: April 5, 2016Date of Patent: February 21, 2017Assignee: SUN PHARMACEUTICAL INDUSTRIES LIMITEDInventors: Neeta Gupta, Simrata Bedi, Jyoti Srivastava, Vinod Kumar Arora, Manisha Pandya, Vyas M. Shingatgeri, Jaiprakash Jaysingrao Bhelonde, Monika Obrah, Sanjay Kumar Sharma, Rajinder K. Jalali, Sudershan Kumar Arora
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Patent number: 9433580Abstract: The invention relates to a topical pharmaceutical composition for burn treatment and microbial infections on human beings or animals. The pharmaceutical composition comprises 0.1% w/w to 1.0% w/w of an antimicrobial drug, i.e., silver sulfadiazine and 0.2% w/w antiseptic, i.e., chlorhexidine gluconate, wherein silver sulfadiazine is in nanonized form.Type: GrantFiled: February 8, 2013Date of Patent: September 6, 2016Assignee: SUN PHARMACEUTICAL INDUSTRIES LIMITEDInventors: Neeta Gupta, Simrata Bedi, Jyoti Srivastava, Vinod Kumar Arora, Manisha Pandya, Vyas M. Shingatgeri, Jaiprakash Jaysingrao Bhelonde, Monika Obrah, Sanjay Kumar Sharma, Rajinder K. Jalali, Sudershan Kumar Arora
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Publication number: 20160213712Abstract: The invention relates to a topical pharmaceutical composition for burn treatment and microbial infections on human beings or animals. The pharmaceutical composition comprises 0.1% w/w to 1.0% w/w of an antimicrobial drug, i.e., silver sulfadiazine and 0.2% w/w antiseptic, i.e., chlorhexidine gluconate, wherein silver sulfadiazine is in nanonized form.Type: ApplicationFiled: April 5, 2016Publication date: July 28, 2016Inventors: Neeta GUPTA, Simrata BEDI, Jyoti SRIVASTAVA, Vinod Kumar ARORA, Manisha PANDYA, Vyas M. SHINGATGERI, Jaiprakash Jaysingrao BHELONDE, Monika OBRAH, Sanjay Kumar SHARMA, Rajinder K. JALALI, Sudershan Kumar ARORA
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Patent number: 9380672Abstract: An electronic device may be provided with display circuitry that includes a display timing controller, a backlight driver, a light source, and other associated backlight structures. The backlight control circuitry may generate a control signal having an adjustable duty cycle to the backlight driver. The backlight driver may include a boost converter, a current driver, and backlight control circuitry. The current driver may only be activated when the control signal is high. The backlight control circuitry may output an enable signal to the boost converter. The backlight control circuitry may activate the boost converter a predetermined amount of time before each rising clock edge in the control signal by asserting the enable signal for a longer period of time than when the control signal is high. The control signal and the enable signal may be deasserted at around the same times.Type: GrantFiled: January 30, 2013Date of Patent: June 28, 2016Assignee: Apple Inc.Inventors: Asif Hussain, Jingdong Chen, Mohammad Jafar Navabi-Shirazi, Manisha Pandya
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Patent number: 8976092Abstract: A system may include a processor, a graphics controller, and a display. The graphics controller may generate video data to be presented on the display. The display may include a display panel, a backlight unit for providing the display panel with backlight, and a display timing controller for communicating with the graphics controller. The display may be used in non-movie mode and movie mode. The backlight unit may be operated in fixed backlight mode during the non-movie display mode and may be operated in dynamic pixel backlight (DPB) mode during the movie display mode. Backlight level adjustments may be sloped only during the non-movie mode. Backlight level sloping can be handled internally within the backlight unit, can be controlled using pulse width modulation with the display timing controller, and implemented using incremental backlight level adjustments with the processor.Type: GrantFiled: January 31, 2013Date of Patent: March 10, 2015Assignee: Apple Inc.Inventors: Asif Hussain, Jingdong Chen, Mohammad Jafar Navabi-Shirazi, Manisha Pandya, Alejandro L. Ascorra
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Publication number: 20140210697Abstract: A system may include a processor, a graphics controller, and a display. The graphics controller may generate video data to be presented on the display. The display may include a display panel, a backlight unit for providing the display panel with backlight, and a display timing controller for communicating with the graphics controller. The display may be used in non-movie mode and movie mode. The backlight unit may be operated in fixed backlight mode during the non-movie display mode and may be operated in dynamic pixel backlight (DPB) mode during the movie display mode. Backlight level adjustments may be sloped only during the non-movie mode. Backlight level sloping can be handled internally within the backlight unit, can be controlled using pulse width modulation with the display timing controller, and implemented using incremental backlight level adjustments with the processor.Type: ApplicationFiled: January 31, 2013Publication date: July 31, 2014Applicant: Apple Inc.Inventors: Asif Hussain, Jingdong Chen, Mohammad Jafar Navabi-Shirazi, Manisha Pandya, Alejandro L. Ascorra
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Publication number: 20140159614Abstract: An electronic device may be provided with display circuitry that includes a display timing controller, a backlight driver, a light source, and other associated backlight structures. The backlight control circuitry may generate a control signal having an adjustable duty cycle to the backlight driver. The backlight driver may include a boost converter, a current driver, and backlight control circuitry. The current driver may only be activated when the control signal is high. The backlight control circuitry may output an enable signal to the boost converter. The backlight control circuitry may activate the boost converter a predetermined amount of time before each rising clock edge in the control signal by asserting the enable signal for a longer period of time than when the control signal is high. The control signal and the enable signal may be deasserted at around the same times.Type: ApplicationFiled: January 30, 2013Publication date: June 12, 2014Applicant: Apple Inc.Inventors: Asif Hussain, Jingdong Chen, Mohammad Jafar Navabi-Shirazi, Manisha Pandya
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Publication number: 20140065191Abstract: The invention relates to a topical pharmaceutical composition for burn treatment and microbial infections on human beings or animals. The pharmaceutical composition comprises 0.1% w/w to 1.0% w/w of an antimicrobial drug, i.e., silver sulfadiazine and 0.2% w/w antiseptic, i.e., chlorhexidine gluconate, wherein silver sulfadiazine is in nanonized form.Type: ApplicationFiled: February 8, 2013Publication date: March 6, 2014Applicant: RANBAXY LABORATORIES LIMITEDInventors: Neeta GUPTA, Simrata BEDI, Jyoti SRIVASTAVA, Vinod Kumar ARORA, Manisha PANDYA, Vyas M. SHINGATGERI, Jaiprakash Jaysingrao BHELONDE, Monika OBRAH, Sanjay Kumar SHARMA, Rajinder K. JALALI, Sudershan Kumar ARORA
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Patent number: 8464081Abstract: A system and method for communicating information using Layer 1 from a powered device to power source equipment via Ethernet. In one embodiment, Layer 1 information such as power management, classification, temperature, and disconnect information is transmitted from a powered device to power source equipment using an AC signal that has a cycle defining a first time period during which the AC signal is turned on and a second time period during which the AC signal is turned off. A type of information being sent by the powered device can be determined based on characteristic on/off times of the AC signal cycle.Type: GrantFiled: August 27, 2010Date of Patent: June 11, 2013Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya
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Patent number: 8355409Abstract: A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PRY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PRY chip, capable of relaying the signal pulse provided by the PRY chip to the PD via the transmit line and a second PRY chip. The first PRY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.Type: GrantFiled: December 30, 2011Date of Patent: January 15, 2013Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya, Farzan Roohparvar, John Perzow
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Patent number: 8205099Abstract: In a Power over Ethernet (POE) system, a power source equipment (PSE) device configured to deliver power to one or more powered devices (PDs) over a plurality of Ethernet transmission lines. The PSE interface includes a multi-port transmission line connector capable connecting to multiple Ethernet transmission lines, and a power source equipment (PSE) controller module integrated with the multi-port transmission line connector. The PSE controller module is capable of semi-automatic mode and legacy detection of one or more of the PDs that are coupled to the Ethernet transmission lines. The PSE controller module includes a plurality of PSE controllers corresponding to the Ethernet transmission lines, including a master PSE controller and plurality of slave PSE controllers coupled to the master PSE controller. The master PSE controller controls the slave PSE controllers, so as to provide power management to said corresponding PD devices, without an external microcontroller.Type: GrantFiled: April 9, 2007Date of Patent: June 19, 2012Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya, Wael William Diab
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Patent number: 8199906Abstract: A system and method for enabling communication between power source equipment and a powered device chip. In one embodiment, communication between the power source equipment and the powered device chip is enabled through a communication link established between the powered device chip and a host device on the powered device.Type: GrantFiled: October 17, 2006Date of Patent: June 12, 2012Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya
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Publication number: 20120102341Abstract: A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PRY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PRY chip, capable of relaying the signal pulse provided by the PRY chip to the PD via the transmit line and a second PRY chip. The first PRY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.Type: ApplicationFiled: December 30, 2011Publication date: April 26, 2012Applicant: Broadcom CorporationInventors: Asif HUSSAIN, Manisha Pandya, Farzan Roohparvar, John Perzow
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Patent number: 8149858Abstract: A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PHY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PHY chip, capable of relaying the signal pulse provided by the PHY chip to the PD via the transmit line and a second PHY chip. The first PHY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.Type: GrantFiled: March 27, 2007Date of Patent: April 3, 2012Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya, Farzan Roohparvar, John Perzow
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Publication number: 20100321169Abstract: A system and method for communicating information using Layer 1 from a powered device to power source equipment via Ethernet. In one embodiment, Layer 1 information such as power management, classification, temperature, and disconnect information is transmitted from a powered device to power source equipment using an AC signal that has a cycle defining a first time period during which the AC signal is turned on and a second time period during which the AC signal is turned off. A type of information being sent by the powered device can be determined based on characteristic on/off times of the AC signal cycle.Type: ApplicationFiled: August 27, 2010Publication date: December 23, 2010Applicant: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya
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Patent number: 7839154Abstract: A system and method of classifying a high powered device (PD) with an increased current limit includes: connecting a voltage to the PD, measuring current through a classification resistor connected to the PD, and determining a PD classification signature based on the current according to classification steps such that a minimum classification step includes a minimum current of 0 mA and a maximum classification step includes a maximum current beyond a predetermined current limit. The system includes a PSE, voltage source, PD classification resistor, and PD voltage, connected to the P. An alternative embodiment further includes a discrete classification circuit and discrete classification resistor to be used to measure the current for classification purposes instead of the PD classification resistor when the PD and PD classification resistor do not support power classification under the classification scheme.Type: GrantFiled: March 27, 2007Date of Patent: November 23, 2010Assignee: Broadcom CorporationInventors: Asif Hussain, Manisha Pandya
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Patent number: 7814342Abstract: A system and method for communicating information using Layer 1 from a powered device to power source equipment via Ethernet. In one embodiment, Layer 1 information such as power management, classification, temperature, and disconnect information is transmitted from a powered device to power source equipment using an AC signal that has a cycle defining a first time period during which the AC signal is turned on and a second time period during which the AC signal is turned off. A type of information being sent by the powered device can be determined based on characteristic on/off times of the AC signal cycle.Type: GrantFiled: October 18, 2006Date of Patent: October 12, 2010Assignee: Broadom CorporationInventors: Asif Hussain, Manisha Pandya
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Patent number: 7705557Abstract: Traditionally, system loads are placed in parallel with the battery. This simple topology wastes the available power if the USB power and/or wall adapter is present. Recent topologies have made some improvements by powering the load by the maximum available voltage. Thus, if a USB power source or wall adapter is present, the load is powered by them rather than the battery, thus improving the system efficiency. However, since the USB power and wall adapter power are current limited, if the load requires higher current than the current limited USB or adapter, then the entire system is powered at voltage of the battery. The present invention further improves the system efficiency by distinguishing the load and powering the constant power loads by the maximum voltage and placing the constant current loads in parallel with the battery.Type: GrantFiled: March 30, 2007Date of Patent: April 27, 2010Assignee: Broadcom CorporationInventors: Sridhar Kotikalapoodi, Farzan Roohparvar, Tivadar Szabo, Manisha Pandya