1
Timothy P Allen, Richard R Schediwy, Federico Faggin: Stylus input capacitive touchpad sensor. Synaptics, D Alessandro & Ritchie, August 24, 1999: US05942733 (378 worldwide citation)

A capacitive touch pad comprises a substrate material, such as a PC board type laminate material, having a plurality of first parallel conductive traces running in a first (X) direction disposed on a first face thereof, and a plurality of second parallel conductive traces running in a second (Y) dir ...


2
David Gillespie, Timothy P Allen, Robert J Miller, Federico Faggin: Object position detector with edge motion feature. Synaptics Incorporated, D Alessandro & Ritchie, August 6, 1996: US05543590 (359 worldwide citation)

A proximity sensor system includes a sensor matrix array having a characteristic capacitance on horizontal and vertical conductors connected to sensor pads. The capacitance changes as a function of the proximity of an object or objects to the sensor matrix. The change in capacitance of each node in ...


3
Josef C Frisch, Gregory E Leyh, John C Platt, Timothy P Allen, Richard R Schediwy, Federico Faggin: Force sensing touchpad. Synaptics Incorporated, D Alessandro & Ritchie, December 29, 1998: US05854625 (303 worldwide citation)

A force sensing touchpad comprises a substantially rigid touch surface; a substantially rigid frame; a plurality of spring structures formed integrally with the touch surface and mechanically connected to the reference frame; and a circuit for deriving force information from capacitances proportiona ...


4
Federico Faggin, Gary S Lynch: Brain learning and recognition emulation circuitry and method of recognizing events. Synaptics, Ronald Craig Fish, January 31, 1989: US04802103 (170 worldwide citation)

There is disclosed herein a method and apparatus for learning the characteristics of an event and for recognizing events which have been previously learned. The apparatus is comprised of forward and feedback matrices which process input signals characterizing events to be learned by comparing the co ...


5
Federico Faggin, Joel A Seely, Timothy P Allen: Electronic device employing a touch sensitive transducer. Synaptics Incorporated, Malcolm B Wittenberg, July 6, 1999: US05920310 (161 worldwide citation)

An electronic device is provided making use of a touch pad module to implement user input functions. The electronic device includes a case having a region of thinner cross section than the remaining case side wall for receiving the touch pad module. The case is further provided with a through hole i ...


6
Carver A Mead, Timothy P Allen, Federico Faggin: Dynamic synapse for neural network. Synaptics, Lyon & Lyon, October 9, 1990: US04962342 (149 worldwide citation)

An electronic circuit is disclosed having a sample/hold amplifier connected to an adaptive amplifier. A plurality of such electronic circuits may be configured in an array of rows and columns. An input voltage vector may be compared with an analog voltage vector stored in a row or column of the arra ...


7
Federico Faggin, Jerry A Klein, Lauren F Yazolino, Robert Korody, Eric P L Ha, Stephan Kerman: Telecommunication apparatus serving as an interface between a digital computer and an analog communication medium. International Remote Imaging Systems, Limbach Limbach & Sutton, March 25, 1986: US04578537 (141 worldwide citation)

The present invention relates to an interface apparatus between a digital computer and an analog communication medium. The interface apparatus has a telephony apparatus for transmitting or receiving the voice signals and a modem for transmitting or receiving the data signals. A switch is interposed ...


8
Carver A Mead, Federico Faggin: Integrating imaging systgem having wide dynamic range with sample/hold circuits. Synaptics Incorporated, D Alessandro Frazzini & Ritchie, June 28, 1994: US05324958 (126 worldwide citation)

A bipolar phototransistor comprises both an integrating photosensor and a switching element. The base terminal of the bipolar phototransistor is utilized as the switch-control node for the pixel and its emitter is the output node of the integrating photosensor. A plurality of integrating photosensor ...


9
Carver A Mead, Federico Faggin: Integrating photosensor and imaging system having wide dynamic range with varactors. Synaptics Incorporated, Kenneth D Alessandro, November 9, 1993: US05260592 (118 worldwide citation)

A bipolar phototransistor comprises both an integrating photosensor and a switching element. The base terminal of the bipolar phototransistor is utilized as the switch-control node for the pixel and its emitter is the output node of the integrating photosensor. A plurality of integrating photosensor ...


10
Carver A Mead, Federico Faggin: Integrating photosensor and imaging system having wide dynamic range. Synaptics Corporation, Kenneth D Alessandro, March 17, 1992: US05097305 (116 worldwide citation)

An integrating photosensor includes an NPN phototransistor having its collector connected to a source of positive voltage, a P-channel MOS transistor having its gate connected to row-select line, its source connected to the emitter of the phototransistor, and its drain connected to a column sense li ...