1
Alan Kramer: Capacitive semiconductor user input device. STMicroelectronics, Lisa K Jorgenson, Peter J Thoma, June 18, 2002: US06408087 (143 worldwide citation)

A method of and system for providing user input to a computer, or the like, having a display by detecting a change in fingerprint pattern of a user. The system controls the position of a pointer on a display by detecting motion of ridges and pores of a fingerprint of a user and moving the pointer on ...


2
Alan Kramer, James Brady: Scanning capacitive semiconductor fingerprint detector. STMicroelectronics, Lisa K Jorgenson, Peter J Thoma, November 13, 2001: US06317508 (109 worldwide citation)

A scanning fingerprint detection system that includes an array of capacitive sensing elements. The array has a first dimension greater than the width of a fingerprint and a second dimension less than the length of a fingerprint. Each of the capacitive sensing elements has a size less than the width ...


3
Alan Kramer: Enhanced fingerprint detection. STMicroelectronics, David V Carlson, Lisa K Jorgenson, January 28, 2003: US06512381 (98 worldwide citation)

An enhanced fingerprint sensing circuit in which a voltage change is applied to the body during sensing. When the person's fingerprint is being sensed, the person's body is in contact with an electrical terminal. When the sensing occurs, the voltage on the electrical terminal changes, whic ...


4
Alan Kramer, James Brady: Scanning capacitive semiconductor fingerprint detector. STMicroelectronics, Lisa K Jorgenson, Peter J Thoma, June 17, 2003: US06580816 (83 worldwide citation)

A scanning fingerprint detection system includes an array of capacitive sensing elements, the array having a first dimension greater than the width of a fingerprint and a second dimension less than the length of a fingerprint. Each of the capacitive sensing elements has first and second conductor pl ...


5
Marco Tartagni, Bhusan Gupta, Alan Kramer: Capacitive distance sensor. STMicroelectronics, David V Carlson, Theodore E Galanthay, Lisa K Jorgenson, September 5, 2000: US06114862 (65 worldwide citation)

A distance sensor has a capacitive element in turn having a first capacitor plate which is positioned facing a second capacitor plate whose distance is to be measured. In the case of fingerprinting, the second capacitor plate is defined directly by the skin surface of the finger being printed. The s ...


6
Marco Tartagni, Bhusan Gupta, Alan Kramer: Capacitive distance sensor. STMicroelectronics, David V Carlson, Lisa K Jorgenson, August 20, 2002: US06437583 (59 worldwide citation)

A distance sensor has a capacitive element in turn having a first capacitor plate which is positioned facing a second capacitor plate whose distance is to be measured. In the case of fingerprinting, the second capacitor plate is defined directly by the skin surface of the finger being printed. The s ...


7
Alexander Kalnitsky, Alan Kramer: Solid state fingerprint sensor packaging apparatus and method. STMicroelectronics, Theodore E Galanthay, Lisa K Jorgenson, Andre Szuwalski, January 4, 2000: US06011859 (59 worldwide citation)

A planar, capacitive-type, rectangular, and multi-pixel fingerprint sensing array is mounted on the horizontal and generally rectangular top-surface of a dome that extends upward generally from the center of a horizontally disposed and generally rectangular silicon substrate member. The dome is form ...


8
Alexander Kalnitsky, Alan Kramer: Electrostatic discharge protection of a capacitve type fingerprint sensing array. STMicroelectronics, David V Carlson, Lisa K Jorgenson, November 19, 2002: US06483931 (48 worldwide citation)

A planar fingerprint pattern detecting array includes a large number of individual skin-distance sensing cells that are arranged in a row/column configuration. Each sensing cell includes an amplifier having an ungrounded input node and an ungrounded output node. Output-to-input negative feedback tha ...


9
Alexander Kalnitsky, Alan Kramer: Electrostatic discharge protection of a capacitive type fingerprint sensing array. UPEK, Jonathan A Small, August 3, 2010: US07768273 (37 worldwide citation)

A planar fingerprint pattern detecting array includes a large number of individual skin-distance sensing cells that are arranged in a row/column configuration. Each sensing cell includes a first capacitor plate placed vertically under the upper surface of a dielectric layer and a second capacitor pl ...


10
Alan Kramer: Memory integrated circuit for storing digital and analog data and method. STMicroelectronics, David V Carlson, Theodore E Galanthay, Lisa K Jorgenson, March 28, 2000: US06044004 (25 worldwide citation)

A memory device includes an array of floating gate FET memory cells capable of storing either analog or digital data. The memory device includes first read-write circuitry for storage and retrieval of digital data, and second read-write circuitry for storage and retrieval of analog data. As a result ...