CA989485A - Fail-safe code keying transmitter - Google Patents

Fail-safe code keying transmitter

Info

Publication number
CA989485A
CA989485A CA149,200A CA149200A CA989485A CA 989485 A CA989485 A CA 989485A CA 149200 A CA149200 A CA 149200A CA 989485 A CA989485 A CA 989485A
Authority
CA
Canada
Prior art keywords
fail
code keying
safe code
keying transmitter
transmitter
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA149,200A
Other versions
CA149200S (en
Inventor
John O.G. Darrow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Westinghouse Air Brake Co
Original Assignee
Westinghouse Air Brake Co
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 Westinghouse Air Brake Co filed Critical Westinghouse Air Brake Co
Application granted granted Critical
Publication of CA989485A publication Critical patent/CA989485A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits
CA149,200A 1971-09-15 1972-08-11 Fail-safe code keying transmitter Expired CA989485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18064471A 1971-09-15 1971-09-15

Publications (1)

Publication Number Publication Date
CA989485A true CA989485A (en) 1976-05-18

Family

ID=22661208

Family Applications (1)

Application Number Title Priority Date Filing Date
CA149,200A Expired CA989485A (en) 1971-09-15 1972-08-11 Fail-safe code keying transmitter

Country Status (3)

Country Link
US (1) US3794920A (en)
AU (1) AU458566B2 (en)
CA (1) CA989485A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4654661A (en) * 1983-03-29 1987-03-31 The United States Of America As Represented By The Secretary Of The Air Force Two fault tolerant transmitter activator
US4806930A (en) * 1986-08-01 1989-02-21 Chamberlain Manufacturing Corporation Radio control transmitter which suppresses harmonic radiation
US4857865A (en) * 1988-11-10 1989-08-15 Hughes Aircraft Company Self equalizing multi-stage radio frequency power amplifier
US5185762A (en) 1991-05-15 1993-02-09 Scs Mobilecom, Inc. Spread spectrum microwave overlay with notch filter
US6407989B2 (en) * 1994-01-21 2002-06-18 Interdigital Technology Corporation Spread spectrum microwave overlay with notch filter
US5377223A (en) * 1993-08-30 1994-12-27 Interdigital Technology Corporation Notch filtering a spread spectrum signal using fourier series coefficients
JP3362672B2 (en) 1998-07-30 2003-01-07 日本電気株式会社 ASK modulation device and ASK modulation method
US7265618B1 (en) * 2000-05-04 2007-09-04 Matsushita Electric Industrial Co., Ltd. RF power amplifier having high power-added efficiency
FR2832275B1 (en) * 2001-11-12 2004-11-19 Evolium Sas PROCESS FOR CLIPPING SIGNALS WITH MULTIPLE CARRIERS TRANSMITTED BY A SAME NON-LINEAR AMPLIFIER

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2401619A (en) * 1940-12-24 1946-06-04 Rca Corp Pulse signaling system
US3202939A (en) * 1961-12-29 1965-08-24 Bell Telephone Labor Inc Balanced transistor translating network
US3626417A (en) * 1969-03-07 1971-12-07 Everett A Gilbert Hybrid frequency shift-amplitude modulated tone system
US3644832A (en) * 1970-09-28 1972-02-22 Gen Electric Power control circuit
US3667049A (en) * 1970-10-30 1972-05-30 Acrodyne Ind Inc Radio frequency pulse transmitter

Also Published As

Publication number Publication date
US3794920A (en) 1974-02-26
AU4327272A (en) 1973-12-13
AU458566B2 (en) 1975-01-24

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