Patents by Inventor Kamran Uz Zaman
Kamran Uz Zaman 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: 11106958Abstract: An electronic system for identifying an article can include a printed memory having a plurality of contact pads electrically coupled to a plurality of landing pads positioned on a first side of a printed circuit board (PCB) substrate. The plurality of landing pads can be electrically coupled to a plurality of endless, concentric contact lines positioned on a second side of the PCB substrate through a plurality of vias that extend through a thickness of the PCB substrate and a plurality of traces that electrically couple the plurality of vias with the plurality of landing pads. To perform a memory operation on the printed memory, contact probes of a reader are physically and electrically contacted with the plurality of concentric contact lines. In some implementations, the memory operation can be performed on the printed memory irrespective of a rotational orientation of the printed memory relative to the reader.Type: GrantFiled: June 16, 2020Date of Patent: August 31, 2021Assignee: XEROX CORPORATIONInventors: Amit Trivedi, Kamran Uz Zaman, Karl Edwin Kurz
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Patent number: 10978169Abstract: A method for ensuring that a memory array such as a ferroelectric memory array is properly electrically connected. The method may be performed, for example, prior to a read or write cycle, during functional testing of the memory array, etc. In one implementation, the memory array is read and the data set including a data bit from each cell is stored in a register. A solid logic 0's pattern is written into the memory array, and each cell is read. If no cell returns a logic 1, it is determined that the memory array is properly connected and the register data values are written to the memory array. If one or more cells returns a logic 1, it is determined that the memory array is improperly connected, the register data values are written to the memory array, and the memory array is removed and reinstalled.Type: GrantFiled: March 17, 2017Date of Patent: April 13, 2021Assignee: XEROX CORPORATIONInventors: Markus Rudolf Silvestri, Kamran Uz Zaman, Christopher P. Caporale, Jimmy E. Kelly, John M. Scharr, Alberto Rodriguez, Dennis J. Prosser
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Patent number: 10796212Abstract: An electronic system for identifying an article can include a printed memory having a plurality of contact pads electrically coupled to a plurality of landing pads positioned on a first side of a printed circuit board (PCB) substrate. The plurality of landing pads can be electrically coupled to a plurality of endless, concentric contact lines positioned on a second side of the PCB substrate through a plurality of vias that extend through a thickness of the PCB substrate and a plurality of traces that electrically couple the plurality of vias with the plurality of landing pads. To perform a memory operation on the printed memory, contact probes of a reader are physically and electrically contacted with the plurality of concentric contact lines. In some implementations, the memory operation can be performed on the printed memory irrespective of a rotational orientation of the printed memory relative to the reader.Type: GrantFiled: October 2, 2018Date of Patent: October 6, 2020Assignee: XEROX CORPORATIONInventors: Amit Trivedi, Kamran Uz Zaman, Karl Edwin Kurz
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Publication number: 20200311502Abstract: An electronic system for identifying an article can include a printed memory having a plurality of contact pads electrically coupled to a plurality of landing pads positioned on a first side of a printed circuit board (PCB) substrate. The plurality of landing pads can be electrically coupled to a plurality of endless, concentric contact lines positioned on a second side of the PCB substrate through a plurality of vias that extend through a thickness of the PCB substrate and a plurality of traces that electrically couple the plurality of vias with the plurality of landing pads. To perform a memory operation on the printed memory, contact probes of a reader are physically and electrically contacted with the plurality of concentric contact lines. In some implementations, the memory operation can be performed on the printed memory irrespective of a rotational orientation of the printed memory relative to the reader.Type: ApplicationFiled: June 16, 2020Publication date: October 1, 2020Applicant: XEROX CORPORATIONInventors: Amit Trivedi, Kamran Uz Zaman, Karl Edwin Kurz
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Publication number: 20200104662Abstract: An electronic system for identifying an article can include a printed memory having a plurality of contact pads electrically coupled to a plurality of landing pads positioned on a first side of a printed circuit board (PCB) substrate. The plurality of landing pads can be electrically coupled to a plurality of endless, concentric contact lines positioned on a second side of the PCB substrate through a plurality of vias that extend through a thickness of the PCB substrate and a plurality of traces that electrically couple the plurality of vias with the plurality of landing pads. To perform a memory operation on the printed memory, contact probes of a reader are physically and electrically contacted with the plurality of concentric contact lines. In some implementations, the memory operation can be performed on the printed memory irrespective of a rotational orientation of the printed memory relative to the reader.Type: ApplicationFiled: October 2, 2018Publication date: April 2, 2020Applicant: XEROX CORPORATIONInventors: Amit Trivedi, Kamran Uz Zaman, Karl Edwin Kurz
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Publication number: 20180268916Abstract: A method for ensuring that a memory array such as a ferroelectric memory array is properly electrically connected. The method may be performed, for example, prior to a read or write cycle, during functional testing of the memory array, etc. In one implementation, the memory array is read and the data set including a data bit from each cell is stored in a register. A solid logic 0's pattern is written into the memory array, and each cell is read. If no cell returns a logic 1, it is determined that the memory array is properly connected and the register data values are written to the memory array. If one or more cells returns a logic 1, it is determined that the memory array is improperly connected, the register data values are written to the memory array, and the memory array is removed and reinstalled.Type: ApplicationFiled: March 17, 2017Publication date: September 20, 2018Applicant: XEROX CORPORATIONInventors: Markus Rudolf Silvestri, Kamran Uz Zaman, Christopher P. Caporale, Jimmy E. Kelly, John M. Scharr, Alberto Rodriguez, Dennis J. Prosser
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Patent number: 7663745Abstract: A method for detecting specular surface flaws on a coated substrate includes impinging visible non-integrated electromagnetic radiation from a first source onto the coated substrate, reflecting the visible non-integrated electromagnetic radiation off the coated substrate into a first photosensitive device, forming a recorded high frequency surface flaw image, and impinging visible coherent electromagnetic radiation from a second source onto a coated substrate at an oblique angle. The visible non-integrated electromagnetic radiation and the visible coherent electromagnetic radiation on the coated substrate are collocated but not combined on the substrate. The visible coherent electromagnetic radiation is reflected off the coated substrate onto a screen material to form a low frequency surface flaw image. The low frequency surface flaw image is recorded to form a recorded low frequency surface flaw image.Type: GrantFiled: February 9, 2007Date of Patent: February 16, 2010Assignee: Xerox CorporationInventors: Kamran Uz Zaman, Stanley Pietrzykowski, Dante Pietrantoni, Kenneth Gottschalk, Richard Schichler
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Publication number: 20080192243Abstract: A method for detecting specular surface flaws on a coated substrate includes impinging visible non-integrated electromagnetic radiation from a first source onto the coated substrate, reflecting the visible non-integrated electromagnetic radiation off the coated substrate into a first photosensitive device, forming a recorded high frequency surface flaw image, and impinging visible coherent electromagnetic radiation from a second source onto a coated substrate at an oblique angle. The visible non-integrated electromagnetic radiation and the visible coherent electromagnetic radiation on the coated substrate are collocated but not combined on the substrate. The visible coherent electromagnetic radiation is reflected off the coated substrate onto a screen material to form a low frequency surface flaw image. The low frequency surface flaw image is recorded to form a recorded low frequency surface flaw image.Type: ApplicationFiled: February 9, 2007Publication date: August 14, 2008Inventors: Kamran Uz Zaman, Stanley Pietrzykowski, Dante Pietrantoni, Kenneth Gottschalk, Richard Schichler
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Patent number: 6963076Abstract: A system for optically sensing manufacturing defects in organic photo conductor (OPC) devices. The system comprising an illumination source for illuminating the OPC device; at least one optical sensor positioned to view the illuminated device; and a controller connectable to the optical sensor, the controller comprising a threshold detector for determining manufacturing defects.Type: GrantFiled: July 31, 2000Date of Patent: November 8, 2005Assignee: Xerox CorporationInventors: Kamran Uz Zaman, L. John Potter, Stanley J. Pietrzykowski, Jr.