IT1201543B - Sistema di decodifica per codice di frequenza - Google Patents

Sistema di decodifica per codice di frequenza

Info

Publication number
IT1201543B
IT1201543B IT22905/86A IT2290586A IT1201543B IT 1201543 B IT1201543 B IT 1201543B IT 22905/86 A IT22905/86 A IT 22905/86A IT 2290586 A IT2290586 A IT 2290586A IT 1201543 B IT1201543 B IT 1201543B
Authority
IT
Italy
Prior art keywords
decoding system
frequency code
code
frequency
decoding
Prior art date
Application number
IT22905/86A
Other languages
English (en)
Other versions
IT8622905A0 (it
Inventor
John W Parker
Original Assignee
Gen Signal Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gen Signal Corp filed Critical Gen Signal Corp
Publication of IT8622905A0 publication Critical patent/IT8622905A0/it
Application granted granted Critical
Publication of IT1201543B publication Critical patent/IT1201543B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
    • B61L3/16—Continuous control along the route
    • B61L3/22—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation
    • B61L3/24—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation employing different frequencies or coded pulse groups, e.g. in combination with track circuits
    • B61L3/246—Continuous control along the route using magnetic or electrostatic induction; using electromagnetic radiation employing different frequencies or coded pulse groups, e.g. in combination with track circuits using coded current

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
IT22905/86A 1986-01-09 1986-12-31 Sistema di decodifica per codice di frequenza IT1201543B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/817,309 US4732355A (en) 1986-01-09 1986-01-09 Rate code decoding system

Publications (2)

Publication Number Publication Date
IT8622905A0 IT8622905A0 (it) 1986-12-31
IT1201543B true IT1201543B (it) 1989-02-02

Family

ID=25222790

Family Applications (1)

Application Number Title Priority Date Filing Date
IT22905/86A IT1201543B (it) 1986-01-09 1986-12-31 Sistema di decodifica per codice di frequenza

Country Status (6)

Country Link
US (1) US4732355A (it)
AU (1) AU6689286A (it)
CA (1) CA1258116A (it)
ES (1) ES2004358A6 (it)
IT (1) IT1201543B (it)
NL (1) NL190479C (it)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8800199A (nl) * 1987-02-09 1988-09-01 Gen Signal Corp Digitale vitale snelheidsdecodeur.
DE4025194A1 (de) * 1990-08-09 1992-02-13 Standard Elektrik Lorenz Ag Gleisstromkreis mit kreuzkorrelation
US5181679A (en) * 1991-08-22 1993-01-26 General Railway Signal Corporation Railway train speed restriction apparatus
US5271584A (en) * 1992-03-02 1993-12-21 General Railway Signal Pulse code railway signalling system
US5485977A (en) * 1994-09-26 1996-01-23 Union Switch & Signal Inc. Reduced harmonic switching mode apparatus and method for railroad vehicle signaling
KR0149765B1 (ko) * 1995-11-10 1998-11-02 김광호 기계식 전화기 가입자의 페이징 서비스를 위한 클릭펄스 검출기 및 검출방법
DE19624192A1 (de) * 1996-06-18 1998-01-02 Doehler Peter Verfahren und Schaltungsanordnung zum Übertragen von digitalen Steuerdaten
US7346116B2 (en) * 2004-07-01 2008-03-18 Zarbana Digital Fund Llc Systems and methods for rapid signal detection and identification
US20070263797A1 (en) * 2006-04-25 2007-11-15 Audiocodes Ltd. Dial pulse detection method and detector

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2731552A (en) * 1951-05-19 1956-01-17 Gen Railway Signal Co Cab signalling system for railroads
US3493876A (en) * 1966-06-28 1970-02-03 Us Army Stable coherent filter for sampled bandpass signals
US3522541A (en) * 1967-11-13 1970-08-04 Sylvania Electric Prod Digital matched filter employing quadrature component correlation apparatus
US3626373A (en) * 1970-01-27 1971-12-07 Gen Signal Corp Rate code decoding system having high- and low-pass filters
US3715579A (en) * 1970-10-22 1973-02-06 Gen Signal Corp Rate decoder with active filters
US3792364A (en) * 1972-08-03 1974-02-12 Sangamo Electric Co Method and apparatus for detecting absolute value amplitude of am suppressed carrier signals
US4019149A (en) * 1976-01-16 1977-04-19 Bell Telephone Laboratories, Incorporated Correlative data demodulator
US4333150A (en) * 1980-01-28 1982-06-01 Westinghouse Electric Corp. Signal receiving apparatus and method
US4307463A (en) * 1980-02-08 1981-12-22 General Signal Corporation Vital rate decoder

Also Published As

Publication number Publication date
ES2004358A6 (es) 1989-01-01
NL8603211A (nl) 1987-08-03
IT8622905A0 (it) 1986-12-31
NL190479B (nl) 1993-10-18
NL190479C (nl) 1994-03-16
CA1258116A (en) 1989-08-01
US4732355A (en) 1988-03-22
AU6689286A (en) 1987-07-16

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961227