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US4559606A Expired / Lapsed US ⏱️ 0.0 years remaining

Arrangement to provide an accurate time-of-arrival indication for a received signal

Assignee: ITT Inc
•
Filing: 1983-07-11
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Granted: 1985-12-17
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Expires: 2003-07-11
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Abstract

Abstract The arrangement comprises a plurality of correlation means coupled to the received signal with the received signal being clocked into each of the plurality of correlation means by a different one of a plurality of different phased clocks with the different phased clocks occurring at a predetermined different time uniformly spaced over a given time interval and integration means coupled to each of the plurality of correlation means to provide the indication of the time of arrival of the received signals. The plurality of correlation means includes a plurality of shift registers into which the received signals are shifted by a different one of the plurality of phased clocks, a reference signal register and a plurality of comparison means each coupled to each stage of a different one of the plurality of shift registers and each stage of the common reference signal shift register to compare the contents of the associated stages of the plurality of signal shift registers and the single common reference signal shift register and to produce an output signal indicative of the results of each of the comparisons.

Inventors

  • 👤 Maurice L. Jezo
  • 👤 Ning H. Lu

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 05:19
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/69; H04B1/707; G; G01; G01S; G01S11/00; G01S11/02; G01S11/08

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 86 words
An arrangement to provide an accurate time-of-arrival indication for a received signal comprising: N correlation means coupled to said received signal, where N is an integer greater than one, said received signal being clocked into each of said N correlation means by a different one of N-phase clocks, said N-phase clocks occurring at a predetermined different time uniformly spaced over a given time interval; and integration means coupled to each of said N correlation means to provide said indication of said time-of-arrival of said received signal.
Claim 2
Dependent Claim 86 words
An arrangement to provide an accurate time-of-arrival indication for a received signal comprising: N correlation means coupled to said received signal, where N is an integer greater than one, said received signal being clocked into each of said N correlation means by a different one of N-phase clocks, said N-phase clocks occurring at a predetermined different time uniformly spaced over a given time interval; and integration means coupled to each of said N correlation means to provide said indication of said time-of-arrival of said received signal.
Claim 3
Dependent Claim 108 words
An arrangement according to claim 1, wherein said N correlation means includes N shift registers coupled to said received signal, said received signal being shifted into each of said N shift registers by said different one of said N-phase clocks, a reference signal shift register, and N comparison means each coupled to each stage of a different one of said N shift registers and each stage of said reference signal shift register to compare the contents of associated stages of said different one of said N shift registers and said reference signal shift register and produce an output signal indicative of the results of each of said comparisons.
Claim 4
Dependent Claim 53 words
An arrangement according to claim 2, wherein each of said N comparison means includes a plurality of EXCLUSIVE-OR gates each coupled to a different associated stage of said different one of said N shift registers and said reference signal shift register to produce said output signal indicative of the result of said comparison.
Claim 5
Dependent Claim 39 words
An arrangement according to claim 3, wherein said integration means includes a summing network coupled to each of said plurality of EXCLUSIVE-OR gates to sum said output signals to provide said indication of said time-of-arrival of said received signal.
Claim 6
Dependent Claim 36 words
An arrangement according to claim 2, wherein said integration means includes a summing network coupled to said N comparison means to sum said output signals to provide said indication of said time-of-arrival of said received signal.
Claim 7
Dependent Claim 36 words
An arrangement according to claim 1, wherein said integration means includes a summing network coupled to said N correlation means to sum output signals therefrom to provide said indication of said time-of-arrival of said received signal.

References Cited (Backward Citations)

US4007331A Cited
US4007330A Cited
US4209835A Cited
US4283767A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-12-16 1989-06-17 1989-12-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-12-16 1993-06-17 1993-12-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-12-16 1997-06-17 1997-12-17 $7700.00 Window Closed / Lapsed

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