Patents Assigned to Aspec Technology, Inc.
  • Patent number: 6298469
    Abstract: A system and method is provided which generates integrated circuits for integrated circuits that are portable from process to process. Information generated from an integrated circuit manufactured on a first process is utilized in combination with the parameters of a subsequent manufacturing process to obtain an integrated circuit based upon that second manufacturing process. Through this system and method a particular integrated circuit design is portable from process to process.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: October 2, 2001
    Assignee: Aspec Technology, Inc.
    Inventor: Patrick Yin
  • Patent number: 6088518
    Abstract: The present invention provides a method and system for porting an integrated circuit layout from a reference process to a target process. The method and system comprises placing components related to the reference process on a grid, wherein the grid is determined by equations that are based upon the desired layout architecture. The method and system includes utilizing the design rules of the target process along with the equations to determine the grid of the target process. The component layout is controlled by parameters, where the design rules provide the values of the parameters. Thus, each component will be properly ported when the parameter values are changed to that of the target process. Finally, the locations of the components are mapped grid-point to grid-point from the reference process to the target process. In so doing, an integrated circuit layout in the target process is drawn without design rule violation.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: July 11, 2000
    Assignee: Aspec Technology, Inc.
    Inventor: Benjamin Jiann Hsu
  • Patent number: 5723992
    Abstract: An improved output driver circuit is disclosed which can be utilized when a plurality of voltage potentials are present. The output driver circuit comprises a first pull-up transistor coupled to a first voltage potential, a second pull-down transistor coupled to a second voltage potential, and a pad member coupled to the first pull-up and second pull-down transistor. The driver circuit further includes a circuit means which is coupled to the pad member and the first pull-up transistor. Accordingly, through this arrangement, the circuit substantially reduces the leakage through the first pull-up transistor when the pad member is coupled to a third voltage potential. An output driver circuit in accordance with the present invention, can be utilized in an integrated circuit environment where multiple voltages such as 3.3 volts and 5 volts are present and the output driver circuit will operate effectively because the leakage path normally associated with such circuits is substantially minimized.
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: March 3, 1998
    Assignee: Aspec Technology, Inc.
    Inventors: Patrick Yin, Craig S. Thrower
  • Patent number: 5701021
    Abstract: A cell architecture for mixed signal applications is disclosed that utilizes significantly less silicon area than the prior art. The core cell includes a transistor arrangement in which substrate taps are located adjacent to the transistor pairs. This provides for a more "symmetric" cell array than those in the prior art. Through the placement of the taps outside of the transistors the power line connections can be routed in a simple and efficient manner. The architecture includes an extension portion in the contact region of the cell to further reduce wiring complexity. In addition the gate array architecture mirrors pairs of transistor columns to allow for the sharing of substrate taps between pairs of columns. This mirroring feature further reduces routing complexity. The cell architecture includes a substrate tap area that allows for the accommodation of a plurality of electrically isolated metal lines.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: December 23, 1997
    Assignee: Aspec Technology, Inc.
    Inventor: Patrick Yin
  • Patent number: 5635737
    Abstract: A gate array architecture is disclosed that utilizes significantly less silicon area than the prior art. The core cell includes a four transistor arrangement in which a substrate tap is located adjacent to the transistor pair. This provides for a more "symmetric" cell array than those in the prior art. Through the placement of the taps outside of the transistors the power line connections can be routed in a simple and efficient manner. The architecture includes an extension portion in the contact region of the cell to further reduce wiring complexity. In addition the gate array architecture mirrors pairs of transistor columns to allow for the sharing of substrate taps between pairs of columns. This mirroring feature further reduces routing complexity. The architecture further includes a plurality of probe lines that are located within the architecture to facilitate testability of the outputs of the architecture.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: June 3, 1997
    Assignee: Aspec Technology, Inc.
    Inventor: Patrick Yin
  • Patent number: 5493135
    Abstract: A gate array architecture is disclosed that utilizes significantly less silicon area than the prior art. The core cell includes a four transistor arrangement in which a substrate tap is located adjacent to the transistor pair. This provides for a more "symmetric" cell array than those in the prior art. Through the placement of the taps outside of the transistors the power line connections can be routed in a simple and efficient manner. The architecture includes an extension portion in the contact region of the cell to further reduce wiring complexity. In addition the gate array architecture mirrors pairs of transistor columns to allow for the sharing of substrate taps between pairs of columns. This mirroring feature further reduces routing complexity.
    Type: Grant
    Filed: January 23, 1995
    Date of Patent: February 20, 1996
    Assignee: Aspec Technology, Inc.
    Inventor: Patrick Yin
  • Patent number: 5404034
    Abstract: A gate array architecture is disclosed that utilizes significantly less silicon area than the prior art. The core cell includes a four transistor arrangement in which a substrate tap is located adjacent to the transistor pair. This provides for a more "symmetric" cell array than those in the prior art. Through the placement of the taps outside of the transistors the power line connections can be routed in a simple and efficient manner. In addition the gate array architecture mirrors pairs of transistor columns to allow for the sharing of substrate taps between pairs of columns. This mirroring feature further reduces routing complexity.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: April 4, 1995
    Assignee: Aspec Technology, Inc.
    Inventor: Patrick Yin
  • Patent number: 5384472
    Abstract: A gate array architecture is disclosed that utilizes significantly less silicon area than the prior art. The core cell includes a four transistor arrangement in which a substrate tap is located adjacent to the transistor pair. This provides for a more "symmetric" cell array than those in the prior art. Through the placement of the taps outside of the transistors the power line connections can be routed in a simple and efficient manner. The architecture includes an extension portion in the contact region of the cell to further reduce wiring complexity. In addition the gate array architecture mirrors pairs of transistor columns to allow for the sharing of substrate taps between pairs of columns. This mirroring feature further reduces routing complexity.
    Type: Grant
    Filed: August 26, 1993
    Date of Patent: January 24, 1995
    Assignee: Aspec Technology, Inc.
    Inventor: Patrick Yin