Patents by Inventor Mithran Mathew
Mithran Mathew 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: 20140191926Abstract: This disclosure provides methods and apparatus, including non-transitory processor instructions on computer storage media, which enable a dual-display device to automatically select and render content to a display. Dual-display devices may include devices with a primary and a secondary display, the secondary display consuming less power than the primary display and having reduced glare when viewed in sunlight. In one aspect, the selection of the display may be based upon at least two of: a battery state of the device, an ambient illumination, and an item of content to be displayed.Type: ApplicationFiled: March 14, 2013Publication date: July 10, 2014Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Mithran Mathew, Nathan Ramasarma
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Patent number: 8391630Abstract: A system and method for processing image data to be displayed on a display device, where the display device requires more power to be driven to display image data comprising particular spatial frequencies in one dimension than to be driven to display image data comprising the particular spatial frequencies in a second dimension. The method includes receiving image data and filtering the received image data such that the image data at particular spatial frequencies in a first dimension are attenuated more than the image data at particular spatial frequencies in a second dimension.Type: GrantFiled: December 22, 2005Date of Patent: March 5, 2013Assignee: QUALCOMM MEMS Technologies, Inc.Inventor: Mithran Mathew
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Publication number: 20110148828Abstract: Methods and systems are disclosed for providing video data and display signals. In one embodiment, a system is configured to display video data on an array of bi-stable display elements, where the system includes a processor, a display comprising an array of bi-stable display elements, a driver controller connected to the processor and configured to receive video data from the processor, and an array driver configured to receive video data from the driver controller and display signals from the processor, and to display the video data on the array of bi-stable display elements using the display signals.Type: ApplicationFiled: February 28, 2011Publication date: June 23, 2011Applicant: QUALCOMM MEMS TechnologiesInventors: Jeffrey B. Sampsell, Karen Tyger, Mithran Mathew
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Patent number: 7920135Abstract: Methods and systems are disclosed for providing video data and display signals. In one embodiment, a system is configured to display video data on an array of bi-stable display elements, where the system includes a processor, a display comprising an array of bi-stable display elements, a driver controller connected to the processor and configured to receive video data from the processor, and an array driver configured to receive video data from the driver controller and display signals from the processor, and to display the video data on the array of bi-stable display elements using the display signals.Type: GrantFiled: April 1, 2005Date of Patent: April 5, 2011Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Jeffrey B. Sampsell, Karen Tyger, Mithran Mathew
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Publication number: 20100134503Abstract: The invention comprises systems and methods for controller and driver features for displays, and in particular, controller and driver features that relate to displays with bi-stable display elements. In one embodiment, such a display includes at least one driving circuit and an array comprising a plurality of bi-stable display elements, where the array is configured to be driven by the driving circuit, and where the driving circuit is programmed to receive video data and provide a subset of the received video data to the array based on a frame skip count. In some embodiments, the frame skip count is programmable or dynamically determined.Type: ApplicationFiled: February 2, 2010Publication date: June 3, 2010Applicant: QUALCOMM MEMS Technologies, Inc.Inventors: Jeffrey B. Sampsell, Karen Tyger, Mithran Mathew
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Patent number: 7679627Abstract: The invention comprises systems and methods for controller and driver features for displays, and in particular, controller and driver features that relate to displays with bi-stable display elements. In one embodiment, such a display includes at least one driving circuit and an array comprising a plurality of bi-stable display elements, where the array is configured to be driven by the driving circuit, and where the driving circuit is programmed to receive video data and provide a subset of the received video data to the array based on a frame skip count. In some embodiments, the frame skip count is programmable or dynamically determined.Type: GrantFiled: April 1, 2005Date of Patent: March 16, 2010Assignee: QUALCOMM MEMS Technologies, Inc.Inventors: Jeffrey B. Sampsell, Karen Tyger, Mithran Mathew
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Publication number: 20090267953Abstract: The invention comprises systems and methods for partitioning displays, and in particular, displays of interferometric modulator displays. In one embodiment, a display system includes one driving circuit configured to provide signals based on video data intended for display, and a bi-stable display comprising an array having a plurality of bi-stable display elements. The array is configured to display video data using signals received from the driving circuit, and the driving circuit is configured to partition the array into two or more fields, each field including at least one bi-stable display element, and refresh each of the two or more fields in accordance with a refresh rate associated with each field.Type: ApplicationFiled: July 7, 2009Publication date: October 29, 2009Applicant: IDC, LLCInventors: Jeffrey B. Sampsell, Karen Tyger, Mithran Mathew
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Patent number: 7586484Abstract: The invention comprises systems and methods for partitioning displays, and in particular, displays of interferometric modulator displays. In one embodiment, a display system includes one driving circuit configured to provide signals based on video data intended for display, and a bi-stable display comprising an array having a plurality of bi-stable display elements. The array is configured to display video data using signals received from the driving circuit, and the driving circuit is configured to partition the array into two or more fields, each field including at least one bi-stable display element, and refresh each of the two or more fields in accordance with a refresh rate associated with each field.Type: GrantFiled: April 1, 2005Date of Patent: September 8, 2009Assignee: IDC, LLCInventors: Jeffrey B. Sampsell, Karen Tyger, Mithran Mathew
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Patent number: 7535466Abstract: Systems and methods of controlling client display modes are disclosed. In one embodiment, an electronic device includes an array of interferometric modulators, and an array driver for the array of interferometric modulators. The array driver is configured to receive video data which at least a portion of is in an interlaced format, to identify a portion of the video data as interlaced format, and to render the identified video data in an interlaced format on the array of interferometric modulators. In another embodiment, a method of displaying information on a bi-stable display includes receiving video data at a device having an interlaced mode of displaying data and a non-interlaced mode of displaying data, identifying at least a portion of the video data as interlaced format, and displaying the interlaced video data on the bi-stable display. In some embodiments the bi-stable display can be an array of interferometric modulators.Type: GrantFiled: April 1, 2005Date of Patent: May 19, 2009Assignee: IDC, LLCInventors: Jeffrey B. Sampsell, Karen Tyger, Mithran Mathew
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Publication number: 20070147688Abstract: A system and method for processing image data to be displayed on a display device, where the display device requires more power to be driven to display image data comprising particular spatial frequencies in one dimension than to be driven to display image data comprising the particular spatial frequencies in a second dimension. The method includes receiving image data and filtering the received image data such that the image data at particular spatial frequencies in a first dimension are attenuated more than the image data at particular spatial frequencies in a second dimension.Type: ApplicationFiled: December 22, 2005Publication date: June 28, 2007Inventor: Mithran Mathew
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Publication number: 20070035805Abstract: A system and method for addressing an array of MEMS display elements, such as interferometric modulators, from a drive control. A display includes groups of display elements that are addressed with a commonly applied drive signal. In one embodiment, the groups of display elements are configured to have different response times and are driven by pulses of varying length indicative of those response times. In another embodiment, the groups of display elements are configured to have different actuation voltages and are driven by pulses of varying voltage indicative of those actuation voltages.Type: ApplicationFiled: October 25, 2006Publication date: February 15, 2007Inventors: Clarence Chui, Mithran Mathew, Marc Mignard
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Publication number: 20070035804Abstract: A system and method for addressing an array of MEMS display elements, such as interferometric modulators, from a drive control. A display includes groups of display elements that are addressed with a commonly applied drive signal. In one embodiment, the groups of display elements are configured to have different response times and are driven by pulses of varying length indicative of those response times. In another embodiment, the groups of display elements are configured to have different actuation voltages and are driven by pulses of varying voltage indicative of those actuation voltages.Type: ApplicationFiled: October 25, 2006Publication date: February 15, 2007Inventors: Clarence Chui, Mithran Mathew, Marc Mignard
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Publication number: 20070024550Abstract: Embodiments of exemplary MEMS interferometric modulators are arranged at intersections of rows and columns of electrodes. In certain embodiments, the column electrode has a lower electrical resistance than the row electrode. A driving circuit applies a potential difference of a first polarity across electrodes during a first phase and then quickly transition to applying a bias voltage having a polarity opposite to the first polarity during a second phase. In certain embodiments, an absolute value of the difference between the voltages applied to the row electrode is less than an absolute value of the difference between the voltages applied to the column electrode during the first and second phases.Type: ApplicationFiled: August 28, 2006Publication date: February 1, 2007Inventors: Clarence Chui, Manish Kothari, Marc Mignard, Mithran Mathew, Jeffrey Sampsell
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Publication number: 20060103643Abstract: Methods and systems for determining power consumption in displays are described. In some cases, the power may be determined by determining the capacitance of each pixel in the display, where the capacitance may be different for pixels in bright and dark states and for pixels of different color. Methods and systems are also provided for modeling the power consumed by a display depicting a particular image.Type: ApplicationFiled: July 15, 2005Publication date: May 18, 2006Inventors: Mithran Mathew, William Cummings
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Publication number: 20060077127Abstract: The invention comprises systems and methods for controller and driver features for displays, and in particular, controller and driver features that relate to displays with bi-stable display elements. In one embodiment, such a display includes at least one driving circuit and an array comprising a plurality of bi-stable display elements, where the array is configured to be driven by the driving circuit, and where the driving circuit is programmed to receive video data and provide a subset of the received video data to the array based on a frame skip count. In some embodiments, the frame skip count is programmable or dynamically determined.Type: ApplicationFiled: April 1, 2005Publication date: April 13, 2006Inventors: Jeffrey Sampsell, Karen Tyger, Mithran Mathew
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Publication number: 20060066504Abstract: Systems and methods of controlling client display modes are disclosed. In one embodiment, an electronic device includes an array of interferometric modulators, and an array driver for the array of interferometric modulators. The array driver is configured to receive video data which at least a portion of is in an interlaced format, to identify a portion of the video data as interlaced format, and to render the identified video data in an interlaced format on the array of interferometric modulators. In another embodiment, a method of displaying information on a bi-stable display includes receiving video data at a device having an interlaced mode of displaying data and a non-interlaced mode of displaying data, identifying at least a portion of the video data as interlaced format, and displaying the interlaced video data on the bi-stable display. In some embodiments the bi-stable display can be an array of interferometric modulators.Type: ApplicationFiled: April 1, 2005Publication date: March 30, 2006Inventors: Jeffrey Sampsell, Karen Tyger, Mithran Mathew
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Publication number: 20060066595Abstract: Methods and systems are disclosed for providing video data and display signals. In one embodiment, a system is configured to display video data on an array of bi-stable display elements, where the system includes a processor, a display comprising an array of bi-stable display elements, a driver controller connected to the processor and configured to receive video data from the processor, and an array driver configured to receive video data from the driver controller and display signals from the processor, and to display the video data on the array of bi-stable display elements using the display signals.Type: ApplicationFiled: April 1, 2005Publication date: March 30, 2006Inventors: Jeffrey Sampsell, Karen Tyger, Mithran Mathew
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Publication number: 20060066503Abstract: The invention comprises systems and methods for partitioning displays, and in particular, displays of interferometric modulator displays. In one embodiment, a display system includes one driving circuit configured to provide signals based on video data intended for display, and a bi-stable display comprising an array having a plurality of bi-stable display elements. The array is configured to display video data using signals received from the driving circuit, and the driving circuit is configured to partition the array into two or more fields, each field including at least one bi-stable display element, and refresh each of the two or more fields in accordance with a refresh rate associated with each field.Type: ApplicationFiled: April 1, 2005Publication date: March 30, 2006Inventors: Jeffrey Sampsell, Karen Tyger, Mithran Mathew
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Publication number: 20060066596Abstract: One embodiment comprises a display controller having two interfaces for receiving video data. In one embodiment, video data that is transmitted to the first of the two interfaces is stored in a frame buffer. Video data that is transmitted to the second of the two interfaces is transmitted independently of the frame buffer and directly to an array driver for display. By limiting the usage of a frame buffer, potential power savings may be achieved. In one embodiment, a client device is manufactured to not include any frame buffer to further reduce manufacturing costs and obtain further power savings.Type: ApplicationFiled: April 1, 2005Publication date: March 30, 2006Inventors: Jeffrey Sampsell, Clarence Chui, Mithran Mathew
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Publication number: 20060044298Abstract: A method for sensing the actuation and/or release voltages of a microelectromechanical device include applying a varying voltage to the device and sensing its state and different voltage levels. In one embodiment, the device is part of a system comprising an array of interferometric modulators suitable for a display. The method can be used to compensate for temperature dependent changes in display pixel characteristics.Type: ApplicationFiled: January 28, 2005Publication date: March 2, 2006Inventors: Marc Mignard, Clarence Chui, Mithran Mathew, Jeffrey Sampsell