Patents by Inventor Bahar N. Wadia
Bahar N. Wadia 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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Patent number: 9306561Abstract: A touch switch apparatus emulating a mechanical switch includes a field effect sensor and an electric field stimulator mechanically associated with the field effect sensor. A field generation signal applied to the field effect sensor causes an electric field to be generated thereabout. The electric field stimulator can be moved between first and second positions with respect to the field effect sensor. When moved into proximity with the field effect sensor, the electric field stimulator disturbs the electric field. A detection circuit coupled to the field effect sensor detects and responds to the disturbance to the electric field.Type: GrantFiled: July 2, 2012Date of Patent: April 5, 2016Assignee: TOUCHSENSOR TECHNOLOGIES, LLCInventors: David W. Caldwell, Rick L. Oppor, Anthony V. Gioiosa, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia, Mark R. Mathews, Donald Charles Mueller, Daniel Eavenson
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Patent number: 9001083Abstract: Methods and apparatus for improving the sensing performance of a capacitive touch screen sensing device. The electrical potential of conductive structures proximate capacitive touch pads of the sensing device is altered to compensate for the effect of parasitic capacitance, based on external conditions such as water on the touch screen or an intervening user worn glove. The compensation for parasitic capacitance improves the signal to noise ratio and therefore the sensing performance of the device.Type: GrantFiled: October 7, 2014Date of Patent: April 7, 2015Assignee: UICO, Inc.Inventor: Bahar N. Wadia
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Publication number: 20150022498Abstract: Methods and apparatus for improving the sensing performance of a capacitive touch screen sensing device. The electrical potential of conductive structures proximate capacitive touch pads of the sensing device is altered to compensate for the effect of parasitic capacitance, based on external conditions such as water on the touch screen or an intervening user worn glove. The compensation for parasitic capacitance improves the signal to noise ratio and therefore the sensing performance of the device.Type: ApplicationFiled: October 7, 2014Publication date: January 22, 2015Applicant: UICO, INC.Inventor: Bahar N. Wadia
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Patent number: 8866793Abstract: Methods and apparatus for improving the sensing performance of a capacitive touch screen sensing device. The electrical potential of conductive structures proximate capacitive touch pads of the sensing device is altered to compensate for the effect of parasitic capacitance, based on external conditions such as water on the touch screen or an intervening user worn glove. The compensation for parasitic capacitance improves the signal to noise ratio and therefore the sensing performance of the device.Type: GrantFiled: August 29, 2011Date of Patent: October 21, 2014Assignee: UICO, Inc.Inventor: Bahar N. Wadia
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Publication number: 20130325151Abstract: A solid-state touch sensing system integrated into a control element for a device or equipment. The control element may have complex surface geometry. The system is capable of determining real-time parameters indicative of the character of user contact with the control element, and generating control signals for controlling the device or equipment or providing information or warnings to a user of the equipment.Type: ApplicationFiled: October 25, 2011Publication date: December 5, 2013Applicant: UICO, LLCInventor: Bahar N. Wadia
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Publication number: 20120267964Abstract: A touch switch apparatus emulating a mechanical switch includes a field effect sensor and an electric field stimulator mechanically associated with the field effect sensor. A field generation signal applied to the field effect sensor causes an electric field to be generated thereabout. The electric field stimulator can be moved between first and second positions with respect to the field effect sensor. When moved into proximity with the field effect sensor, the electric field stimulator disturbs the electric field. A detection circuit coupled to the field effect sensor detects and responds to the disturbance to the electric field.Type: ApplicationFiled: July 2, 2012Publication date: October 25, 2012Applicant: TOUCHSENSOR TECHNOLOGIES, LLCInventors: David W. Caldwell, Rick L. Oppor, Anthony V. Gioiosa, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia, Mark R. Mathews, Donald Charles Mueller, Daniel Eavenson
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Patent number: 8227940Abstract: A touch switch apparatus emulating a mechanical switch includes a field effect sensor and an electric field stimulator mechanically associated with the field effect sensor. A field generation signal applied to the field effect sensor causes an electric field to be generated thereabout. The electric field stimulator can be moved between first and second positions with respect to the field effect sensor. When moved into proximity with the field effect sensor, the electric field stimulator disturbs the electric field. A detection circuit coupled to the field effect sensor detects and responds to the disturbance to the electric field.Type: GrantFiled: February 14, 2011Date of Patent: July 24, 2012Assignee: TouchSensor Technologies, LLCInventors: David W. Caldwell, Rick L. Oppor, Anthony V. Gioiosa, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia, Mark R. Mathews, Donald Charles Mueller, Daniel Eavenson
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Publication number: 20120092288Abstract: Methods and apparatus for improving the sensing performance of a capacitive touch screen sensing device. The electrical potential of conductive structures proximate capacitive touch pads of the sensing device is altered to compensate for the effect of parasitic capacitance, based on external conditions such as water on the touch screen or an intervening user worn glove. The compensation for parasitic capacitance improves the signal to noise ratio and therefore the sensing performance of the device.Type: ApplicationFiled: August 29, 2011Publication date: April 19, 2012Inventor: Bahar N. Wadia
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Patent number: 8135482Abstract: An intelligent shelving system integrates touch sensors, displays, lighting, and other components into shelves. Touch sensors can be used as limit switches to control shelf motion, to monitor items borne on shelves, to detect spills, and to control lighting and other devices and functions. Displays can provide information relating to objects stored in the shelving system and the operation and status of the shelving system.Type: GrantFiled: May 17, 2010Date of Patent: March 13, 2012Assignee: TouchSensor Technologies, LLCInventors: David W. Caldwell, Thomas M. Schreiber, Bahar N. Wadia, Donald C. Mueller
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Publication number: 20110163982Abstract: A touch sensor pad, including a touch sensor that senses the presence of a touching member placed proximate the touch sensor. A layer of protective material overlies the touch sensor. The layer of protective material has a first surface proximate the touch sensor and an opposing second surface distal from the touch sensor. The second surface includes a resting surface portion and a developed surface portion. The developed surface portion is recessed below the resting surface portion such that the developed surface portion is nearer to the touch sensor than the resting surface portion. The touch sensor has a sensitivity such that the presence of a touching member in contact with the resting surface portion does not result in an actuation of the touch sensor while the presence of a touching member pressed into the developed surface portion does result in the actuation of the touch sensor.Type: ApplicationFiled: November 5, 2010Publication date: July 7, 2011Inventor: Bahar N. Wadia
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Publication number: 20110133815Abstract: A touch switch apparatus emulating a mechanical switch includes a field effect sensor and an electric field stimulator mechanically associated with the field effect sensor. A field generation signal applied to the field effect sensor causes an electric field to be generated thereabout. The electric field stimulator can be moved between first and second positions with respect to the field effect sensor. When moved into proximity with the field effect sensor, the electric field stimulator disturbs the electric field. A detection circuit coupled to the field effect sensor detects and responds to the disturbance to the electric field.Type: ApplicationFiled: February 14, 2011Publication date: June 9, 2011Applicant: TOUCHSENSOR TECHNOLOGIES, LLCInventors: David W. Caldwell, Rick L. Oppor, Anthony V. Gioiosa, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia, Mark R. Mathews, Donald Charles Mueller, Daniel Eavenson
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Patent number: 7906875Abstract: A touch switch apparatus for detecting the presence of an object such as a human appendage, the apparatus having a touch pad, an electric field generated about the touch pad and also having a preferably integrated and local control circuit connected to the touch pad and to a controlled device. Practical applications for touch switch apparatus, including use of touch switch apparatus in connection with other structure to emulate mechanical switches.Type: GrantFiled: September 26, 2005Date of Patent: March 15, 2011Assignee: TouchSensor Technologies, LLCInventors: David W. Caldwell, Rick L. Oppor, Anthony V. Gioiosa, Robert B. Campbell, Thomas M. Schreiber, Bahar N. Wadia, Mark R. Mathews, Donald Charles Mueller, Daniel Eavenson
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Patent number: 7850339Abstract: A display includes a substrate having front and rear sides and defining one or more optical paths. A light source corresponding to each optical path is associated with the rear side of the substrate. Light propagates from the light source to the front side of the substrate through the corresponding optical path. Offsetting the light source from the centerline of the optical path improves light diffusion by promoting light reflection off the sides of the optical path. Multiple light sources of different colors can be associated with each optical path to provide for variable color output from each optical path at the front side of the substrate.Type: GrantFiled: February 12, 2007Date of Patent: December 14, 2010Assignee: Touchsensor Technologies, LLCInventors: Bahar N. Wadia, Donald Charles Mueller
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Patent number: 7840286Abstract: An intelligent shelving system integrates touch sensors, displays, lighting, and other components into shelves. Touch sensors can be used as limit switches to control shelf motion, to monitor items borne on shelves, to detect spills, and to control lighting and other devices and functions. Displays can provide information relating to objects stored in the shelving system and the operation and status of the shelving system.Type: GrantFiled: October 6, 2006Date of Patent: November 23, 2010Assignee: TouchSensor Technologies, LLCInventors: David W. Caldwell, Thomas M. Schreiber, Bahar N. Wadia, Donald C. Mueller
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Publication number: 20100219958Abstract: An intelligent shelving system integrates touch sensors, displays, lighting, and other components into shelves. Touch sensors can be used as limit switches to control shelf motion, to monitor items borne on shelves, to detect spills, and to control lighting and other devices and functions. Displays can provide information relating to objects stored in the shelving system and the operation and status of the shelving system.Type: ApplicationFiled: May 17, 2010Publication date: September 2, 2010Applicant: TOUCHSENSOR TECHNOLOGIES, LLCInventors: David W. Caldwell, Thomas M. Schreiber, Bahar N. Wadia, Donald C. Mueller
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Patent number: 7364322Abstract: A lighting apparatus includes multiple point light sources housed in a reflector housing. The reflector housing diffuses the light produced by the point light sources to emulate a linear light source. Power supplies are provided to energize the light sources, to control heat generation and energy usage, and to provide thermal protection.Type: GrantFiled: June 10, 2005Date of Patent: April 29, 2008Assignee: TouchSensor Technologies, LLCInventors: Rick L. Oppor, Bahar N. Wadia, Donald Charles Mueller, David Allen Wolff
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Patent number: 7175304Abstract: A panel, such as a component carrier or substrate, is provided with one or more penetrations. A light source associated with a surface of the panel and the corresponding end of each penetration provides light to the interior of the penetration, which guides the light to the other end of the penetration and corresponding surface of the panel. The penetration can be coated with a reflective material to improve its performance as a light guide. Alternatively or additionally, the penetration can be filled with a refractive material. A diffuser can be provided to diffuse light exiting the penetration. The light sources provides light to selected penetrations on demand such that the penetrations function as displays or elements of a display.Type: GrantFiled: January 22, 2004Date of Patent: February 13, 2007Assignee: Touchsensor Technologies, LLCInventors: Bahar N. Wadia, David W. Caldwell
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Publication number: 20040228145Abstract: A panel, such as a component carrier or substrate, is provided with one or more penetrations. A light source associated with a surface of the panel and the corresponding end of each penetration provides light to the interior of the penetration, which guides the light to the other end of the penetration and corresponding surface of the panel. The penetration can be coated with a reflective material to improve its performance as a light guide. Alternatively or additionally, the penetration can be filled with a refractive material. A diffuser can be provided to diffuse light exiting the penetration. The light sources provides light to selected penetrations on demand such that the penetrations function as displays or elements of a display.Type: ApplicationFiled: January 22, 2004Publication date: November 18, 2004Inventors: Bahar N. Wadia, David W. Caldwell