Computer-aided design and analysis of circuits and semiconductor – Nanotechnology related integrated circuit design
Reexamination Certificate
2006-02-28
2006-02-28
Smith, Matthew (Department: 2825)
Computer-aided design and analysis of circuits and semiconductor
Nanotechnology related integrated circuit design
C716S030000, C716S030000
Reexamination Certificate
active
07007254
ABSTRACT:
Methods and apparatuses to design and analyze digital circuits with time division multiplexing. At least one embodiment of the present invention efficiently models subsystems connected by a TDM channel by introducing equivalent delays in the connections for the subsystems, where the delays are determined according to the upper bounds of the delays caused by the TDM channel. The TDM channel is modeled with its equivalent delays. Thus, a transformation tool is allowed to take into account the original constraints and time budgeting of the sending subsystem and the receiving subsystem. The problem of asynchronous clock domains is eliminated; and, simulation time of the multiplexed circuit is also improved. In some embodiments of the present invention, multiple TDM slots are assigned to a particular signal to reduce the equivalent connection delay caused by the TDM channel for the particular signal. In some embodiments of the present invention, timing simulation is performed using the equivalent delays to avoid the simulation of the TDM hardware; and, the simulation time step does not have to be reduced due to asynchronous clock, resulting in reduced simulation time.
REFERENCES:
patent: 5410678 (1995-04-01), Takasaki
patent: 5596742 (1997-01-01), Agarwal et al.
patent: 5602830 (1997-02-01), Fichou et al.
patent: 5649176 (1997-07-01), Selvidge et al.
patent: 5761484 (1998-06-01), Agarwal et al.
patent: 5847578 (1998-12-01), Noakes et al.
patent: 5850537 (1998-12-01), Selvidge et al.
patent: 5854752 (1998-12-01), Agarwal
patent: 6009256 (1999-12-01), Tseng et al.
patent: 6009531 (1999-12-01), Selvidge et al.
patent: 6223328 (2001-04-01), Ito et al.
patent: 6321366 (2001-11-01), Tseng et al.
patent: 6377912 (2002-04-01), Sample et al.
patent: 6785873 (2004-08-01), Tseng
Borkovic Drazen
McElvain Kenneth S.
Blakely , Sokoloff, Taylor & Zafman LLP
Levin Naum
Smith Matthew
Synplicity, Inc.
LandOfFree
Method and apparatus for the design and analysis of digital... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for the design and analysis of digital..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for the design and analysis of digital... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3640391