Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Clock or pulse waveform generating
Reexamination Certificate
2005-03-08
2005-03-08
Nu Ton, My-Trang (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Clock or pulse waveform generating
C327S165000
Reexamination Certificate
active
06864735
ABSTRACT:
An apparatus and method for regenerating reset and clock signals and a high-speed digital system using the apparatus and method are provided. In the regenerating circuit of the invention, a clock circuit receives an external clock signal and generates there from an internal clock signal, which is forwarded to a plurality of clocked circuits such as, for example, D flip-flops. A reset circuit receives an external reset signal and generates therefrom an internal reset signal, which is forwarded to the clocked circuits to reset the clock circuits. A clock masking circuit masks the internal clock signal for a masking period such that the clocked circuits are not clocked during the masking period. The high-speed digital system of the invention includes a plurality of function blocks coupled on a bus. The reset and clock regenerating circuit of the invention generates internal reset and clock signals from externally applied reset and clock signals.
REFERENCES:
patent: 4979194 (1990-12-01), Kawano
patent: 5768281 (1998-06-01), Takano
patent: 5821781 (1998-10-01), Rigazio
patent: 6016071 (2000-01-01), Shay
patent: 6756827 (2004-06-01), Konuk et al.
Mills & Onello LLP
Nu Ton My-Trang
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