Electronic digital logic circuitry – Signal sensitivity or transmission integrity – Bus or line termination
Reexamination Certificate
2005-04-12
2005-04-12
Le, Don (Department: 2819)
Electronic digital logic circuitry
Signal sensitivity or transmission integrity
Bus or line termination
C326S026000, C326S082000
Reexamination Certificate
active
06879181
ABSTRACT:
Methods and apparatuses for signal line termination with minimum current flowing through a termination node. In one embodiment, a voltage regulator is connected between a termination node and a system potential reference plane, which is typically system ground or Vss, to regulate a terminating potential, which can be used as a reference potential for the input buffers to receive the signals. The voltage regulator continuously adjusts the reference potential that will be used by the signal line input buffers to minimize the current flow into and out of the termination node of the signal lines.
REFERENCES:
patent: 4573034 (1986-02-01), Schouhamer Immink
patent: 5381425 (1995-01-01), Bitzer et al.
patent: 5504774 (1996-04-01), Takai et al.
patent: 5608760 (1997-03-01), Sandri et al.
patent: 5910969 (1999-06-01), Sayiner et al.
patent: 5938773 (1999-08-01), Hauck et al.
patent: 6094381 (2000-07-01), Isa
patent: 6256722 (2001-07-01), Acton et al.
patent: 6265994 (2001-07-01), Kahlman
patent: 2160392 (1985-12-01), None
Mircea R. Stan, et al, Bus Invert Coding for Low-Power I/O, IEEE tranaction on VLSI systems, vol. 3, No. 1, Mar. 1995, pp. 49 and 50.
Kazuyuki Nakamura, et al, “A 50% Noise Reduction Interface using Low Weight Coding”, NEC corporation, Shimokuzawa, Sagamihara, Kanagawa 229, Japan, Center for Integrated Systems, Stanford University, Stanford, CA 94305, pp. 144 and 145.
Luca G. Tallini, et al, “Balanced Codes with Parallel Encoding and Decoding”, IEEE Transaction on Computers, vol. 48, No. 8, Aug. 1999, pp. 794-814.
Luca G. Tallini, et al, “Design of Balanced and Constant Weight Codes for VLSI Systems”, IEEE Transaction on Computers, vol. 47, No. 5, May 1998.
Jeffrey F. Tabor, “Noice Reduction using Low-Weight and Constant Weight Coding Techniques”, Massachusetts Institute of Technology, Aug. 10, 1990.
Youngsoo Shin, et al., “Partical Bus-Invert Coding for Power Optimization of System Level Bus”, School of Electric Engineering, Seoul National University, Seoul 151-742, Korea, 1998, pp. 127-129.
J. Pieter M. Schalkwuk, “An Algorithm for Source Coding”, IEEE Transactions on Information Theory, vol. IT-18, No. 3, May 1972, pp. 395-399.
Apple Computer Inc.
Le Don
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