1
Martin E Hellman, Bailey W Diffie, Ralph C Merkle: Cryptographic apparatus and method. Stanford University, Flehr Hohbach Test, April 29, 1980: US04200770 (881 worldwide citation)

A cryptographic system transmits a computationally secure cryptogram over an insecure communication channel without prearrangement of a cipher key. A secure cipher key is generated by the conversers from transformations of exchanged transformed signals. The conversers each possess a secret signal an ...


2
Timothy M Schmidl, Donald C Cox: Timing and frequency synchronization of OFDM signals. Stanford University, Lumen Intellectual Property Services, March 24, 1998: US05732113 (356 worldwide citation)

A method and apparatus achieves rapid timing synchronization, carrier frequency synchronization, and sampling rate synchronization of a receiver to an orthogonal frequency division multiplexed (OFDM) signal. The method uses two OFDM training symbols to obtain full synchronization in less than two da ...


3
Farid Nemati, James D Plummer: Semiconductor capacitively-coupled NDR device and its applications in high-density high-speed memories and in power switches. Stanford University, Crawford PLLC, May 8, 2001: US06229161 (261 worldwide citation)

A novel capacitively coupled NDR device can be used to implement a variety of semiconductor circuits, including high-density SRAM cells and power thyristor structures. In one example embodiment, the NDR device is used as a thin vertical PNPN structure with capacitively-coupled gate-assisted turn-off ...


4
Boyd Fowler, Abbas El Gamal: CMOS image sensor with pixel level A/D conversion. Stanford University, Brian D Ogonowsky, Skjerven Morrill MacPherson Franklin & Friel, October 24, 1995: US05461425 (251 worldwide citation)

An image sensor formed using a CMOS process is described herein which includes a pixel array core of phototransistors whose conductivities are related to the magnitude of light impinging upon the phototransistors. The analog signals generated by the phototransistors are converted to a serial bit str ...


5
Charles D Schaper, Khalid A El Awady, Thomas Kailath: Multizone bake/chill thermal cycling module. Stanford University, Lumen Intellectual Property Services, September 8, 1998: US05802856 (248 worldwide citation)

A thermal cycling module includes an array of thermoelectric devices �36! divided into multiple zones �A, B, C, D! independently controlled by corresponding variable power supplies �56, 58, 60, 62!. The thermoelectric devices �36! provide localized, precise, and rapid control of both heating and coo ...


6
Illah Reza Nourbakhsh, David Andre: Generating categorical depth maps using passive defocus sensing. Stanford University, Lumen Intellectual Property Services, August 11, 1998: US05793900 (245 worldwide citation)

A method is disclosed for generating a categorical depth map of a scene using passive defocus sensing. In a preferred embodiment three synchronized CCD cameras focused at different distances detect three images of the same scene. An image processor partitions the images into an array of regions and ...


7
Mark Zdeblick: Method of making an integrated, microminiature electric-to-fluidic valve. Board of Trustees of Leland Stanford University, Skjerven Morrill MacPherson Franklin & Friel, October 30, 1990: US04966646 (238 worldwide citation)

A method of making an integrated, microminiature, electric-to-fluidic valve. The method comprises, in one embodiment, anisotropically etching a cavity in a silicon wafer to form a thin membrane at the bottom of a trench. Then a second wafer is etched to form an exit path surrounded by a valve seat p ...


8
David H Shen, Chien Meen Hwang, Bruce B Lusignan, Bruce A Wooley: Radio frequency signal reception using frequency shifting by discrete-time sub-sampling down-conversion. Stanford University, Lumen Intellectual Property Services, June 17, 1997: US05640698 (201 worldwide citation)

An RF communications receiver permits greater integration on standard silicon chips and consumes less power than previous receivers. Sub-sampling and discrete-time signal processing techniques are used to frequency down-convert, filter, amplify, and select a desired analog RF channel. A sample-and-h ...


9
Boyd Fowler, David Yang, Abbas El Gamal: Serial analog-to-digital converter using successive comparisons. Stanford University, Brian D Ogonowsky, Skjerven Morrill MacPherson Franklin & Friel, September 1, 1998: US05801657 (180 worldwide citation)

A method for simultaneously performing bit serial analog to digital conversion (ADC) for a potentially very large number of signals is described. The method is ideally suited for performing on chip ADC in area image sensors. In one embodiment, to achieve N-bit precision, the method employs a one-bit ...


10
Derek Gerlach, Arogyaswami Paulraj, Gregory G Raleigh: Method of subspace beamforming using adaptive transmitting antennas with feedback. Stanford University, Lumen Intellectual Property Services, May 27, 1997: US05634199 (155 worldwide citation)

A method is disclosed for using feedback to reduce crosstalk between mobile receivers in a wireless communications system comprising an adaptive transmitting antenna array. Feedback signals from the receivers are time-averaged and used to calculate a set of weight vectors that minimize crosstalk and ...