Patents by Inventor Darius Martin Sullivan
Darius Martin Sullivan 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: 20240168435Abstract: A method of generating a computer-generated hologram from a three-dimensional image comprising a plurality of two-dimensional image layers is provided. The method comprises generating hologram data for each layer of the image, and updating the hologram data of at least one layer of the image based on the hologram data of the other layers of the image.Type: ApplicationFiled: January 18, 2024Publication date: May 23, 2024Inventors: Andrzej KACZOROWSKI, Alfred James NEWMAN, Christian FIELDHOUSE, Indi PRITCHARD, Amy HARRIS, Darius Martin SULLIVAN
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Publication number: 20230213891Abstract: A method and display apparatus for reducing holographic speckle when displaying holographic images are described. A target image (10) is decomposed into input images (11). A first input image includes higher spatial frequency components of the target image and is imaged using a first display method (12) to generate a first holographic display image. The second input image includes lower spatial frequency components of the target image and is imaged using a second display method (12) to generate a second display image. The first and second display images are combined for display to a user. The second display method (12) is adapted to reduce holographic speckle or include no holographic speckle compared to the first holographic display method (12) thereby reducing holographic speckle in the combined display image (13).Type: ApplicationFiled: June 2, 2021Publication date: July 6, 2023Inventors: Alfred James NEWMAN, Indi PRITCHARD, Darius Martin SULLIVAN, Sapumal Jaliya SENANAYAKE
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Patent number: 8274480Abstract: A contact sensitive device (10) comprising a member (12) capable of supporting bending waves, a first sensor (16) mounted on the member for measuring bending wave vibration in the member, the sensor (16) determining a first measured bending wave signal and a processor which calculates information relating to a contact on the member (12) from the measured bending wave signal, the processor applying a correction based on the dispersion relation of the material of the member (12) supporting the bending waves, characterized in that the device (10) comprises a second sensor (16) to determine a second measured bending wave signal which is measured simultaneously with the first measured bending wave signal and the processor calculates a dispersion corrected function of the two measured bending wave signals which is selected from the group consisting of a dispersion corrected correlation function, a dispersion corrected convolution function, a dispersion corrected coherence function and other phase equivalent functioType: GrantFiled: July 3, 2002Date of Patent: September 25, 2012Assignee: New Transducers LimitedInventor: Darius Martin Sullivan
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Patent number: 7376523Abstract: A contact sensitive device includes a member capable of supporting bending waves and a plurality of sensors mounted on the member for measuring bending wave vibration in the member. The sensors measure the bending wave signals and by calculating a phase angle for each measured bending wave signal and a phase difference between the phase angles of at least two pairs of sensors so that at least two phase differences are calculated, the location of the contact can be determined.Type: GrantFiled: December 21, 2006Date of Patent: May 20, 2008Assignee: New Transducers LimitedInventors: Darius Martin Sullivan, Nicholas Patrick Roland Hill
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Patent number: 7184898Abstract: A contact sensitive device includes a member capable of supporting bending waves and a plurality of sensors mounted on the member for measuring bending wave vibration in the member. The sensors measure the bending wave signals and by calculating a phase angle for each measured bending wave signal and a phase difference between the phase angles of at least two pairs of sensors so that at least two phase differences are calculated, the location of the contact can be determined.Type: GrantFiled: March 21, 2005Date of Patent: February 27, 2007Assignee: New Transducers LimitedInventors: Darius Martin Sullivan, Nicholas Patrick Roland Hill
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Patent number: 6922642Abstract: A contact sensitive device includes a member capable of supporting bending waves, a first sensor mounted on the member for measuring bending wave vibration in the member, the sensor determining a first measured bending wave signal, a second sensor to determine a second measured bending wave signal and a processor that optimizes a product of a set of corrected impulse response measurements from each sensor to determine information related to a contact.Type: GrantFiled: January 5, 2004Date of Patent: July 26, 2005Assignee: New Transducers LimitedInventor: Darius Martin Sullivan
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Patent number: 6871149Abstract: A contact sensitive device includes a member capable of supporting bending waves and a plurality of sensors mounted on the member for measuring bending wave vibration in the member. The sensors measure the bending wave signals and by calculating a phase angle for each measured bending wave signal and a phase difference between the phase angles of least two pairs of sensors so that at least two phase differences are calculated, the location of the contact can be determined.Type: GrantFiled: December 5, 2003Date of Patent: March 22, 2005Assignee: New Transducers LimitedInventors: Darius Martin Sullivan, Nicholas Patrick Roland Hill
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Publication number: 20040233174Abstract: Disclosed is a touch input device that determines touch position by sensing vibrations propagating in a touch plate that are indicative of a touch to the touch plate. Vibration sensing devices such as piezoelectric sensors are used to sense the vibrations. Selecting the size, shape, placement position and orientation of the sensors on the touch plate can enhance sensitivity of the sensors to vibration and yield symmetric response with respect to the direction of vibration propagation. Also disclosed is a method of making a vibration sensing touch input device.Type: ApplicationFiled: May 19, 2003Publication date: November 25, 2004Inventors: Michael J. Robrecht, Nicholas Patrick Roland Hill, Darius Martin Sullivan
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Publication number: 20040173389Abstract: A contact sensitive device includes a member capable of supporting bending waves, a first sensor mounted on the member for measuring bending wave vibration in the member, the sensor determining a first measured bending wave signal, a second sensor to determine a second measured bending wave signal and a processor that optimises a product of a set of corrected impulse response measurements from each sensor to determine information related to a contact.Type: ApplicationFiled: January 5, 2004Publication date: September 9, 2004Applicant: New Transducers LimitedInventor: Darius Martin Sullivan
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Publication number: 20040160421Abstract: A contact sensitive device (10) comprising a member (12) capable of supporting bending waves, a first sensor (16) mounted on the member for measuring bending wave vibration in the member, the sensor (16) determining a first measured bending wave signal and a processor which calculates information relating to a contact on the member (12) from the measured bending wave signal, the processor applying a correction based on the dispersion relation of the material of the member (12) supporting the bending waves, characterised in that the device (10) comprises a second sensor (16) to determine a second measured bending wave signal which is measured simultaneously with the first measured bending wave signal and the processor calculates a dispersion corrected function of the two measured bending wave signals which is selected from the group consisting of a dispersion corrected correlation function, a dispersion corrected convolution function, a dispersion corrected coherence function and other phase equivalent functioType: ApplicationFiled: January 5, 2004Publication date: August 19, 2004Inventor: Darius Martin Sullivan
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Publication number: 20040133366Abstract: A contact sensitive device includes a member capable of supporting bending waves and a plurality of sensors mounted on the member for measuring bending wave vibration in the member. The sensors measure the bending wave signals and by calculating a phase angle for each measured bending wave signal and a phase difference between the phase angles of least two pairs of sensors so that at least two phase differences are calculated, the location of the contact can be determined.Type: ApplicationFiled: December 5, 2003Publication date: July 8, 2004Applicant: New Transducers LimitedInventors: Darius Martin Sullivan, Nicholas Patrick Roland Hill