GB1013304A - Improvements in or relating to remote control systems - Google Patents

Improvements in or relating to remote control systems

Info

Publication number
GB1013304A
GB1013304A GB33916/62A GB3391662A GB1013304A GB 1013304 A GB1013304 A GB 1013304A GB 33916/62 A GB33916/62 A GB 33916/62A GB 3391662 A GB3391662 A GB 3391662A GB 1013304 A GB1013304 A GB 1013304A
Authority
GB
United Kingdom
Prior art keywords
signals
stage
signal
amplitude
control
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
GB33916/62A
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.)
Admiral Corp
Original Assignee
Admiral 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 Admiral Corp filed Critical Admiral Corp
Publication of GB1013304A publication Critical patent/GB1013304A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/02—Non-electrical signal transmission systems, e.g. optical systems using infrasonic, sonic or ultrasonic waves

Abstract

1,013,304. Ultrasonic signalling systems. ADMIRAL CORPORATION. Sept. 4, 1962 [Sept. 11, 1961], No. 33916/62. Heading G4F. [Also in Divisions H3 and H4] A control system which responds to remotely transmitted ultrasonic control signals of a particular frequency and predetermined minimum amplitude comprises a receiving arrangement for converting the control signals into corresponding electrical signals which are amplified in an arrangement including an electron valve. The valve is arranged so that it is in a circuit whose output is decreased for all signals having amplitudes greater than a predetermined level so that the system responds only to signals lying within a restricted amplitude range. Such a system used, for example, in controlling television receivers may receive the ultrasonic control signal (transmitted for example by means of a hammer and rod type transmitter) with a piezo-electric type microphone 6 tuned to the control signal frequency. The signal from the microphone is passed through the stages 10 and 20 of a transistorized amplifier and thence to the stage 30, whose output is transformer coupled to the following stage. This stage contains as part of its collector load a resistor 38, at the collector end of which is a signal by-pass capacitor 39. In the presence of high-amplitude input signals the large load currents passing through the resistor 38 reduce the operating voltage of the transistor 30 and thereby reduce its gain. The output signal from the transformer 40 of the stage 30 is passed to the stage 50, whose output operates the coil 47 of a relay. A large capacitor 48 connected between ground and the collector 52 of the transistor 50 delays the operation of the relay for a predetermined minimum time. The closing of the relay contacts 54 is used to actuate the device 55 and initiate the desired control. The discrimination produced by the circuit with regard to frequency, amplitude and duration of the received control signal makes it very effective in rejecting spurious noise signals.
GB33916/62A 1961-09-11 1962-09-04 Improvements in or relating to remote control systems Expired GB1013304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US137135A US3192507A (en) 1961-09-11 1961-09-11 Remote control system

Publications (1)

Publication Number Publication Date
GB1013304A true GB1013304A (en) 1965-12-15

Family

ID=22475978

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33916/62A Expired GB1013304A (en) 1961-09-11 1962-09-04 Improvements in or relating to remote control systems

Country Status (3)

Country Link
US (1) US3192507A (en)
GB (1) GB1013304A (en)
LU (1) LU42318A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299358A (en) * 1963-01-23 1967-01-17 Philco Ford Corp Remote control receiver with a detector responsive only to unmodulated carrier wave
FR1369480A (en) * 1963-07-02 1964-08-14 Trt Telecom Radio Electr Delayed trigger device
US3268856A (en) * 1963-10-23 1966-08-23 Melpar Inc Gun blast detector
US3569969A (en) * 1964-02-17 1971-03-09 John W Lemon Jr Magnetic induction, audiofrequency selective, remote control system
US3366847A (en) * 1965-10-04 1968-01-30 Automatic Elect Lab Proximity switch
US3729735A (en) * 1971-06-24 1973-04-24 Bec Prod Inc Remote ultrasonic sending device for airconditioner
US4125826A (en) * 1977-01-05 1978-11-14 Rasmussen Fred M Ultrasonic vehicle alarm system
US4967695A (en) * 1989-06-23 1990-11-06 Invisible Fence Company, Inc. System for controlling the movement of an animal
US5053768A (en) * 1989-12-21 1991-10-01 Invisible Fence Company, Inc. Golf cart control system
US5460124A (en) 1993-07-15 1995-10-24 Perimeter Technologies Incorporated Receiver for an electronic animal confinement system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2215946A (en) * 1937-12-22 1940-09-24 Telefunken Gmbh Circuit for reducing electrical disturbances
US2345472A (en) * 1939-10-20 1944-03-28 Rca Corp Remote control system
US2809240A (en) * 1953-12-28 1957-10-08 Rca Corp Semi-conductor squelch circuit
US2907012A (en) * 1955-12-30 1959-09-29 Pitman Duncan Sofar alarm
US3050661A (en) * 1958-10-03 1962-08-21 Gen Motors Corp Transistorized receiver for door operator
US3052853A (en) * 1959-06-03 1962-09-04 Bendix Corp Attenuator for strong signals in a radio receiver
US3056928A (en) * 1959-11-06 1962-10-02 Admiral Corp Electronic circuit
US3027497A (en) * 1960-06-15 1962-03-27 Admiral Corp Electro-mechanical remote control system

Also Published As

Publication number Publication date
LU42318A1 (en) 1962-11-07
US3192507A (en) 1965-06-29

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