1
Rafael C Camarota, Frederick C Furtek, Walford W Ho, Edward H Browder: Programmable logic cell and array. Concurrent Logic, Pennie & Edmonds, September 1, 1992: US05144166 (334 worldwide citation)

A programmable logic array comprising cells and a bus network in which the cells are arranged in a two-dimensional matrix of rows and columns and are interconnected by the bus network. The cells are also interconnected by a two-dimensional array of direct connections between a cell and its four near ...


2
Frederick C Furtek: Programmable logic cell and array. April 17, 1990: US04918440 (161 worldwide citation)

Programmable logic cells, and arrays of those cells, having certain characteristics, including: (1) the ability to program each cell to act either as a logic element or as a logical identity element(s) between one or more inputs and one or more outputs; (2) the ability to rotate circuits by 90.degre ...


3
Frederick C Furtek, Martin T Mason, Robert B Luking: Field programmable gate array with distributed RAM and increased cell utilization. Atmel Corporation, Thomas Schneck, Mark Protsik, April 13, 1999: US05894565 (145 worldwide citation)

A field programmable gate array has a matrix of programmable logic cells and a bus network of local and express bus lines. The bus network effectively partitions the matrix into blocks of cells with each block having its own distinct set of local bus lines. Express bus lines extend across more than ...


4
Frederick C Furtek, Rafael C Camarota: Versatile programmable logic cell for use in configurable logic arrays. Atmel Corporation, Pennie & Edmonds, September 14, 1993: US05245227 (138 worldwide citation)

An improved programmable logic cell for use in a programmable logic array comprising cells which are arranged in a two-dimensional matrix of rows and columns and are interconnected by a two-dimensional array of direct connections between a cell and its four nearest neighbors, one to its left (or to ...


5
Frederick C Furtek: Programmable, asynchronous logic cell and array. Concurrent Logic, Wolf Greenfield & Sacks, October 13, 1987: US04700187 (134 worldwide citation)

An asynchronous logic cell and a two- or three dimensional array formed of such cells. Each cell comprises a number of exclusive-OR gates, Muller C-elements and programmable switches. The logic cell is reprogrammable and may even be reprogrammed dynamically, such as to perform recursive operations o ...


6
Frederick C Furtek, Martin T Mason, Robert B Luking: Field programmable gate array having access to orthogonal and diagonal adjacent neighboring cells. Atmel Corporation, Thomas Schneck, Mark Protsik, January 11, 2000: US06014509 (129 worldwide citation)

A field programmable gate array (FPGA) comprising a matrix of programmable logic cells, a bus network of local and express bus lines, and a system of perimeter I/O pads is disclosed. Logic cells are directly connected to neighboring nearest cells, including diagonally and orthogonally adjacent cells ...


7
Rafael C Camarota, Frederick C Furtek, Walford W Ho, Edward H Browder: Programmable logic cell and array with bus repeaters. Concurrent Logic, Pennie & Edmonds, June 8, 1993: US05218240 (83 worldwide citation)

A programmable logic array comprising cells and a bus network in which the cells are arranged in a two-dimensional matrix of rows and columns and are interconnected by the bus network. The cells are also interconnected by a two-dimensional array of direct connections between a cell and its four near ...


8
Frederick C Furtek: Programmable logic cell and array. Concurrent Logic, Apple Computer, Pennie & Edmonds, May 28, 1991: US05019736 (79 worldwide citation)

A logic cell is described having four inputs, four outputs, a control store, means for multiplexing the four inputs onto two leads and logic means that operate in response to the signals on the two leads and signals from the control store to product output signals which are applied to the four outpu ...


9
Frederick C Furtek: System for programming graphically a programmable, asynchronous logic cell and array. Apple Computer, Wolf Greenfield & Sacks, July 4, 1989: US04845633 (75 worldwide citation)

A system for programming an asynchronous logic cell and a two- or three-dimensional array formed of such cells. Each cell comprises a number of exclusive-OR gates, Muller C-elements and programmable switches. The logic cell is reprogrammable and may even be reprogrammed dynamically, such as to perfo ...


10
Frederick C Furtek, Martin T Mason, Robert B Luking: FPGA structure having main, column and sector clock lines. Atmel Corporation, Thomas Schneck, Mark Protsik, December 26, 2000: US06167559 (61 worldwide citation)

A field programmable gate array with a matrix of rows and columns of programmable logic cells interconnectable to each other by a network of local and express bus lines and to I/O pads at the perimeter of the logic cell matrix and bus network, is characterized by having a set of clock lines which in ...