Clock distribution system for digital computers
Abstract
Apparatus for eliminating, in each clock distribution amplifier of a clock distribution system, sequential pulse catch-up error due to one pulse "overtaking" a prior clock pulse. The apparatus includes timing means to produce a periodic electromagnetic signal with a fundamental frequency having a fundamental frequency component V'.sub.01 (t); an array of N signal characteristic detector means, with detector means No. 1 receiving the timing means signal and producing a change-of-state signal V.sub.1 (t) in response to receipt of a signal above a predetermined threshold; N substantially identical filter means, one filter means being operatively associated with each detector means, for receiving the change-of-state signal V.sub.n (t) and producing a modified change-of-state signal V'.sub.n (t) (n=1, . . . , N) having a fundamental frequency component that is substantially proportional to V'.sub.01 (t-.theta..sub.n (t) with a cumulative phase shift .theta..sub.n (t) having a time derivative that may be made uniformly and arbitrarily small; and with the detector means n+1 (1.ltoreq.n
- Inventors:
-
- Brentwood, CA
- (Davis, CA)
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 863816
- Patent Number(s):
- 4253065
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H03 - BASIC ELECTRONIC CIRCUITRY H03K - PULSE TECHNIQUE
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- clock; distribution; digital; computers; apparatus; eliminating; amplifier; sequential; pulse; catch-up; error; due; overtaking; prior; timing; means; produce; periodic; electromagnetic; signal; fundamental; frequency; component; 01; array; characteristic; detector; receiving; producing; change-of-state; response; receipt; predetermined; threshold; substantially; identical; filter; operatively; associated; modified; proportional; t-; theta; cumulative; phase; shift; time; derivative; uniformly; arbitrarily; ltoreq; fundamental frequency; clock pulse; signal characteristic; predetermined threshold; filter means; substantially identical; phase shift; electromagnetic signal; digital computer; operatively associated; clock distribution; frequency component; sequential pulse; time derivative; digital computers; /327/375/
Citation Formats
Wyman, Robert H, and Loomis, Jr., Herschel H. Clock distribution system for digital computers. United States: N. p., 1981.
Web.
Wyman, Robert H, & Loomis, Jr., Herschel H. Clock distribution system for digital computers. United States.
Wyman, Robert H, and Loomis, Jr., Herschel H. Thu .
"Clock distribution system for digital computers". United States. https://www.osti.gov/servlets/purl/863816.
@article{osti_863816,
title = {Clock distribution system for digital computers},
author = {Wyman, Robert H and Loomis, Jr., Herschel H.},
abstractNote = {Apparatus for eliminating, in each clock distribution amplifier of a clock distribution system, sequential pulse catch-up error due to one pulse "overtaking" a prior clock pulse. The apparatus includes timing means to produce a periodic electromagnetic signal with a fundamental frequency having a fundamental frequency component V'.sub.01 (t); an array of N signal characteristic detector means, with detector means No. 1 receiving the timing means signal and producing a change-of-state signal V.sub.1 (t) in response to receipt of a signal above a predetermined threshold; N substantially identical filter means, one filter means being operatively associated with each detector means, for receiving the change-of-state signal V.sub.n (t) and producing a modified change-of-state signal V'.sub.n (t) (n=1, . . . , N) having a fundamental frequency component that is substantially proportional to V'.sub.01 (t-.theta..sub.n (t) with a cumulative phase shift .theta..sub.n (t) having a time derivative that may be made uniformly and arbitrarily small; and with the detector means n+1 (1.ltoreq.n},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}