Patents by Inventor Graham Charles Townsend
Graham Charles Townsend 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: 10547793Abstract: A camera unit and method of control are described. The camera unit has a camera flash sub-unit configurable to emit flash light having an adjustable characteristic. A camera sensor sub-unit generates raw color data when exposed to light for processing into a digital image. The camera unit also includes a camera controller for coordinating operation of the camera flash sub-unit and the camera sensor sub-unit. The camera controller monitors one or more ambient light characteristics in a vicinity of the camera unit. Prior to receiving a command instructing the camera unit to generate the digital image, the camera controller repeatedly configures the camera flash sub-unit based on the monitored ambient light characteristics to adjust the characteristics of the emitted flash light. Once the camera controller receives the command, the camera sensor sub-unit is instructed to expose an image sensor using the pre-adjusted camera flash light to increase illumination.Type: GrantFiled: May 4, 2017Date of Patent: January 28, 2020Assignee: BlackBerry LimitedInventors: Qian Wang, Yun Seok Choi, Graham Charles Townsend, Sui Tong Tang
-
Patent number: 9977944Abstract: A photography subsystem is configured to be operated in fingerprint scanning mode and a normal mode. An autofocus module may be initialized to control a lens with an initial focal length set according to received instructions indicating one of the modes of operation. An image signal processor associated with the photography subsystem may process images received from the photography subsystem and, if necessary, process the images to form a candidate digital fingerprint for use in an authentication process.Type: GrantFiled: August 24, 2016Date of Patent: May 22, 2018Assignee: BlackBerry LimitedInventors: Colin Shiva Ramrattan, Robert James Lowles, Graham Charles Townsend
-
Publication number: 20170237889Abstract: A camera unit and method of control are described. The camera unit has a camera flash sub-unit configurable to emit flash light having an adjustable characteristic. A camera sensor sub-unit generates raw color data when exposed to light for processing into a digital image. The camera unit also includes a camera controller for coordinating operation of the camera flash sub-unit and the camera sensor sub-unit. The camera controller monitors one or more ambient light characteristics in a vicinity of the camera unit. Prior to receiving a command instructing the camera unit to generate the digital image, the camera controller repeatedly configures the camera flash sub-unit based on the monitored ambient light characteristics to adjust the characteristics of the emitted flash light. Once the camera controller receives the command, the camera sensor sub-unit is instructed to expose an image sensor using the pre-adjusted camera flash light to increase illumination.Type: ApplicationFiled: May 4, 2017Publication date: August 17, 2017Applicant: BlackBerry LimitedInventors: Qian WANG, Yun Seok CHOI, Graham Charles TOWNSEND, Sui Tong TANG
-
Patent number: 9681058Abstract: A camera unit and method of control are described. The camera unit has a camera flash sub-unit configurable to emit flash light having an adjustable characteristic. A camera sensor sub-unit generates raw color data when exposed to light for processing into a digital image. The camera unit also includes a camera controller for coordinating operation of the camera flash sub-unit and the camera sensor sub-unit. The camera controller monitors one or more ambient light characteristics in a vicinity of the camera unit. Prior to receiving a command instructing the camera unit to generate the digital image, the camera controller repeatedly configures the camera flash sub-unit based on the monitored ambient light characteristics to adjust the characteristics of the emitted flash light. Once the camera controller receives the command, the camera sensor sub-unit is instructed to expose an image sensor using the pre-adjusted camera flash light to increase illumination.Type: GrantFiled: March 20, 2012Date of Patent: June 13, 2017Assignee: BlackBerry LimitedInventors: Qian Wang, Yun Seok Choi, Graham Charles Townsend, Sui Tong Tang
-
Publication number: 20160364594Abstract: A photography subsystem is configured to be operated in fingerprint scanning mode and a normal mode. An autofocus module may be initialized to control a lens with an initial focal length set according to received instructions indicating one of the modes of operation. An image signal processor associated with the photography subsystem may process images received from the photography subsystem and, if necessary, process the images to form a candidate digital fingerprint for use in an authentication process.Type: ApplicationFiled: August 24, 2016Publication date: December 15, 2016Inventors: Colin Shiva RAMRATTAN, Robert James LOWLES, Graham Charles TOWNSEND
-
Patent number: 9471826Abstract: A photography subsystem is configured to be operated in fingerprint scanning mode and a normal mode. An autofocus module may be initialized to control a lens with an initial focal length set according to received instructions indicating one of the modes of operation. An image signal processor associated with the photography subsystem may process images received from the photography subsystem and, if necessary, process the images to form a candidate digital fingerprint for use in an authentication process.Type: GrantFiled: May 21, 2010Date of Patent: October 18, 2016Assignee: BlackBerry LimitedInventors: Colin Shiva Ramrattan, Robert James Lowles, Graham Charles Townsend
-
Patent number: 8947584Abstract: A camera module is provided for an electronic device, such as a wireless mobile station or standalone device. The camera module includes a low F-stop lens assembly that is translatable into a desired position. An image of a subject is provided to an EDOF assembly, including a sensor assembly, and an extended-depth-of-field processor. The extended-depth-of-field processor provides for formation of a resultant, recorded image that exhibits improved depth of field characteristics.Type: GrantFiled: July 7, 2011Date of Patent: February 3, 2015Assignee: BlackBerry LimitedInventors: Yun Seok Choi, Qian Wang, Graham Charles Townsend
-
Patent number: 8792683Abstract: An optical navigation subsystem may be used when obtaining a candidate fingerprint for a mobile communication device (e.g., for authentication purposes). To accommodate such use of the optical navigation subsystem, the optical navigation subsystem may be adapted to automatically adjust a processed image sensor window from a first set of window dimensions (e.g., suitable for optical navigation) to a second set of window dimensions (e.g., suitable for fingerprint capture). Alternatively, a single, static set of window dimension may be employed in conjunction with stitching algorithms, or other methods suitable for forming candidate fingerprint images by combining a plurality of images obtained using the static set of window dimension.Type: GrantFiled: June 4, 2010Date of Patent: July 29, 2014Assignee: BlackBerry LimitedInventors: Colin Shiva Ramrattan, Hassan Hosseinpor, Graham Charles Townsend, Robert James Lowles, Rayhan Behin, Gregory William Jacobs
-
Patent number: 8379123Abstract: A system and method of capturing low-light images on a mobile device include a camera module, an image sensor, an infrared filter, and a visible light filter. The image sensor can detect a color spectrum of ambient light passed through a lens of the camera module. The visible light filter can cover a first portion of the image sensor, and the infrared filter can cover a second portion of the image sensor. A processor can be coupled to the image sensor to receive visible light data and infrared data. Visible light data can be formed from ambient light passed through the visible light filter and image sensor. Infrared data can formed from ambient light passed through the infrared filter and the image sensor. The visible light data and the infrared data are combined to form a low-light image data having enhanced brightness while maintaining color accuracy.Type: GrantFiled: December 13, 2010Date of Patent: February 19, 2013Assignee: Research In Motion LimitedInventors: Graham Charles Townsend, Brett Foster
-
Publication number: 20120262601Abstract: An image sensor of a camera unit comprises raw image pixels for generating raw image color representing the exposed scene image. The sensor also comprises dummy pixels for supplemental data pertaining to characteristics of light exposing the scene image. A image sensor processor generates a processed digital image by adjusting component color values, obtained from raw image color data, by one or more adjustment factors calculated from supplemental image data. The adjustment factors are calculated according a selected mode of operation.Type: ApplicationFiled: March 6, 2012Publication date: October 18, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Yun Seok CHOI, Graham Charles TOWNSEND
-
Publication number: 20120262571Abstract: A camera unit and method of control are described. The camera unit has a camera flash sub-unit configurable to emit flash light having an adjustable characteristic. A camera sensor sub-unit generates raw color data when exposed to light for processing into a digital image. The camera unit also includes a camera controller for coordinating operation of the camera flash sub-unit and the camera sensor sub-unit. The camera controller monitors one or more ambient light characteristics in a vicinity of the camera unit. Prior to receiving a command instructing the camera unit to generate the digital image, the camera controller repeatedly configures the camera flash sub-unit based on the monitored ambient light characteristics to adjust the characteristics of the emitted flash light. Once the camera controller receives the command, the camera sensor sub-unit is instructed to expose an image sensor using the pre-adjusted camera flash light to increase illumination.Type: ApplicationFiled: March 20, 2012Publication date: October 18, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Qian WANG, Yun Seok CHOI, Graham Charles TOWNSEND, Sui Tong TANG
-
Publication number: 20120147243Abstract: A system and method of capturing low-light images on a mobile device include a camera module, an image sensor, an infrared filter, and a visible light filter. The image sensor can detect a color spectrum of ambient light passed through a lens of the camera module. The visible light filter can cover a first portion of the image sensor, and the infrared filter can cover a second portion of the image sensor. A processor can be coupled to the image sensor to receive visible light data and infrared data. Visible light data can be formed from ambient light passed through the visible light filter and image sensor. Infrared data can formed from ambient light passed through the infrared filter and the image sensor. The visible light data and the infrared data are combined to form a low-light image data having enhanced brightness while maintaining color accuracy.Type: ApplicationFiled: December 13, 2010Publication date: June 14, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Graham Charles Townsend, Brett Foster
-
Publication number: 20120140108Abstract: A camera module is provided for an electronic device, such as a wireless mobile station or standalone device. The camera module includes a low F-stop lens assembly that is translatable into a desired position. An image of a subject is provided to an EDOF assembly, including a sensor assembly, and an extended-depth-of-field processor. The extended-depth-of-field processor provides for formation of a resultant, recorded image that exhibits improved depth of field characteristics.Type: ApplicationFiled: July 7, 2011Publication date: June 7, 2012Applicant: RESEARCH IN MOTION LIMITEDInventors: Yun Seok Choi, Qian Wang, Graham Charles Townsend
-
Publication number: 20110300830Abstract: An optical navigation subsystem may be used when obtaining a candidate fingerprint for a mobile communication device (e.g., for authentication purposes). To accommodate such use of the optical navigation subsystem, the optical navigation subsystem may be adapted to automatically adjust a processed image sensor window from a first set of window dimensions (e.g., suitable for optical navigation) to a second set of window dimensions (e.g., suitable for fingerprint capture). Alternatively, a single, static set of window dimension may be employed in conjunction with stitching algorithms, or other methods suitable for forming candidate fingerprint images by combining a plurality of images obtained using the static set of window dimension.Type: ApplicationFiled: June 4, 2010Publication date: December 8, 2011Applicant: RESEARCH IN MOTION LIMITEDInventors: Colin Shiva RAMRATTAN, Hassan HOSSEINPOR, Graham Charles TOWNSEND, Robert James LOWLES, Rayhan BEHIN, Gregory William JACOBS
-
Publication number: 20110286639Abstract: A photography subsystem is configured to be operated in fingerprint scanning mode and a normal mode. An autofocus module may be initialized to control a lens with an initial focal length set according to received instructions indicating one of the modes of operation. An image signal processor associated with the photography subsystem may process images received from the photography subsystem and, if necessary, process the images to form a candidate digital fingerprint for use in an authentication process.Type: ApplicationFiled: May 21, 2010Publication date: November 24, 2011Inventors: Colin Shiva Ramrattan, Robert James Lowles, Graham Charles Townsend
-
Patent number: 5926214Abstract: A low noise operation method for a camera system having an image sensing active pixel array, the method comprising the steps of: (a) providing an optical shutter in front of an image sensing pixel array of a camera system, said image sensing pixel array having an image sensing face defined by a series of active pixels arranged in rows and columns; (b) while said shutter is closed, resetting each said pixel and then reading a first output from each said pixel; (c) opening said optical shutter for a predetermined exposure period so as to allow light to be incident upon said image sensing face of said pixel array; (d) closing said optical shutter and then reading a second output from each said pixel, without resetting said pixels; and (e) subtracting one of said first and second outputs from the other of said first and second outputs for each said pixel, so as to obtain a first difference signal for each said pixel, which first difference signal is substantially free of reset and fixed offset noise components.Type: GrantFiled: November 14, 1996Date of Patent: July 20, 1999Assignee: VLSI Vision LimitedInventors: Peter Brian Denyer, Jonathan Ephriam David Hurwitz, Donald James Baxter, Graham Charles Townsend