Electrical transmission or interconnection systems – With nonswitching means responsive to external nonelectrical... – Temperature responsive
Patent
1984-08-29
1986-11-18
Miller, Stanley D.
Electrical transmission or interconnection systems
With nonswitching means responsive to external nonelectrical...
Temperature responsive
307591, 307606, 328 55, H03K 513, H03K 5159
Patent
active
046238050
ABSTRACT:
Apparatus for automatically adjusting the propagation time delay of an electrical circuit, such as an integrated circuit chip. In a preferred embodiment, automatic de-skewing circuitry is provided on each of a plurality of clock distribution chips for de-skewing the clock outputs from different chips. In a preferred implementation of the de-skewing circuitry, feedback circuitry including a multi-tapped delay line and an accurate constant delay are employed in conjunction with a phase comparator for automatically adjusting the propagation delay of each chip to provide substantially the same constant delay relative to a main system clock for the clock outputs provided by the clock distribution chips.
REFERENCES:
patent: 3883810 (1975-05-01), Tacussel
patent: 4023110 (1977-05-01), Oliver
patent: 4494021 (1985-01-01), Bell et al.
patent: 4496861 (1985-01-01), Bazes
patent: 4530107 (1985-07-01), Williams
Flora Laurence P.
McCullough Michael A.
Burroughs Corporation
Cass Nathan
Chung Edmund M.
Davis B. P.
Miller Stanley D.
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