US2117638A - Receiver control system - Google Patents

Receiver control system Download PDF

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Publication number
US2117638A
US2117638A US10392336A US2117638A US 2117638 A US2117638 A US 2117638A US 10392336 A US10392336 A US 10392336A US 2117638 A US2117638 A US 2117638A
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Prior art keywords
receiver
circuit
switch
tube
control
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Expired - Lifetime
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John C Walter
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WIRED RADIO Inc
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WIRED RADIO Inc
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    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03GCONTROL OF AMPLIFICATION
    • H03G1/00Details of arrangements for controlling amplification
    • H03G1/02Remote control of amplification, tone, or bandwidth
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04HBROADCAST COMMUNICATION
    • H04H20/00Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/65Arrangements characterised by transmission systems for broadcast
    • H04H20/76Wired systems
    • H04H20/84Wired systems combined with power distribution network

Description

May 17, 1938. J c WALTER 2,117,638

RECEIVER CONTROL SYSTEM Filed Oct. 3, 1956 SELECTIVE PROGRAM RECEIVER FltT-ER IN V EN TOR.

BY SMMBSW' A TTORNEY.

Patented May 17, 1938 PATENT OFFECE RECEIVER CONTROL SYSTEM John 0. Walter, Collingswood, N. J., assignor to Wired Radio, Inc., New York, N. Y., a corporation of Delaware Application October 3,

2 Claims.

My invention pertains in general to signalling systems and specifically relates to an arrangement for rendering signal receiving circuits effective under control of signals transmitted from a program source at a remote point.

The principal object of my invention consists in providing a system of program reception having a, stand-by control circuit effective for initiating the operation of the system of program reception upon reception of signalling energy.

A further object comprises providing a signal receiver with a controlling switch which, when moved to a position for rendering the receiver inoperative, automatically initiates the operation of a stand-by control circuit for rendering the receiver operative upon receipt of signals intended for the receiver.

A still further object comprises providing a wired radio program system for automatically rendering receivers operative for reception of programs.

These and other objects will be apparent from the following, reference being had to the accompanying drawing which diagrammatically illustrates a preferred form of the receiver control system of the invention.

Referring to the drawing in detail, power lines I represent a wired radio distribution system including a commercial alternating current network upon which program modulated carrier frequencies are impressed in accordance with wired radio practice. A selective program filter 2 is capacitively coupled with the lines I for receiving therefrom various and selected carrier frequency bands for. delivering program signalling energy to a wired radio receiver 3.

The receiver 3 comprises electrical circuits and electron tubes for receiving and reproducing a desired program. The electron tubes of the re- 40 ceiver 3 are energized by a circuit 4 which is connected to the lines I through a switch terminal 5, adapted to be engaged by a movable switch element 6. The switching element 6 is adapted to be manually controlled by the wired radio subscriber to energize the set 3 when it is desired to receive programs. When the subscriber shuts down receiver 3, he moves the switch element '6 out of engagement with the terminal 5, whereupon the switch element 6 engages with a terminal I connected through a transformer primary winding 8 to complete a circuit with the power lines I.

A secondary winding 9 supplies a low voltage operating current to an electron tube Ill, biased to cut-off. The control element of the electron tube In is included in a resonant input circuit 1936, Serial No. 103,923

having an inductance II and capacitor l2 connected therein. This input circuit for the tube In is capacitively coupled across power lines I. The resonance of this input circuit may be adjusted in several ways. In one instance, it may be sensitive to carrier frequencies in a very broad band which embraces all of the frequency bands to which the program filter 2 may be sensitive in its selection operations. In another instance, the resonance of the input circuit for the tube In may be adjusted so that it is responsive only to frequencies within a selected program passed by the filter 2, and, in another instance, the resonance of this input circuit to tube In may be adjusted to a special monitoring frequency entirely outside of the frequencies normally passed by the filter 2.

The anode or output circuit of tube I0 includes connections I3 which provide an available supply of anode current for the tube It. This output circuit also includes a milliammeter M for closing a switch I5 having upper and lower contacts the upper contact being movable by and falling with the armature, the operation of which closes an energizing circuit from the power lines. I to a solenoid l6 adapted to move the switch element 6 from a position in engagement with contact I to a position in engagement with contact terminal 5.

When the receiver 3 is shut down the tube ID is automatically energized for stand-by operation, drawing a minimum amount of heating current and substantially no anode current. Upon reception of carrier frequency energy within the frequency range to which the input circuit of tube I0 is responsive, the control electrode of tube In causes a flow of anode current which operates. milliammeter [4 to close switch l5. Upon closure of switch [5 the solenoid I6 is energized, whereupon the switch element 6 is actuated to engage terminal 5, thereby completing circuit 4 and initiating and maintaining the operation of receiver 3 until manually shut down. When the switch element 6 is thus moved, the energizing circuit for the tube 10 is interrupted so that the tube l0 does not become energized until the switch element 6 is again manually moved and the receiver 3 is deenergized.

Although a preferred form of control system has been disclosed, it will be understood that various changes and modifications can be made without departing from the intended scope of the invention. Therefore, no limitation is intended other than imposed by the appended claims.

What is claimed as new and original and desired to be secured by Letters Patent of the United States is:

1. A receiver control system comprising, a radio receiver, an energizing circuit for said radio receiver, a switch in said energizing circuit, an electron tube stand-by receiver, an electron tube energizing circuit for said stand-by receiver, means operated by the movement of said switch to energize said last mentioned circuit when the en- 10 ergizing circuit for said receiver is open, and con-

US2117638A 1936-10-03 1936-10-03 Receiver control system Expired - Lifetime US2117638A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495916A (en) * 1944-10-07 1950-01-31 Gen Electric Remote control receiver
US2545259A (en) * 1946-10-05 1951-03-13 Monmouth Lab Inc Multiple radio heterodyne distribution system
US4331973A (en) * 1980-10-21 1982-05-25 Iri, Inc. Panelist response scanning system
US4331974A (en) * 1980-10-21 1982-05-25 Iri, Inc. Cable television with controlled signal substitution
US4404589A (en) * 1980-10-21 1983-09-13 Iri, Inc. Cable television with multi-event signal substitution
USRE33808E (en) * 1980-10-21 1992-01-28 Information Resources, Inc. Cable television with multi-event signal substitution
US7734251B1 (en) 1981-11-03 2010-06-08 Personalized Media Communications, Llc Signal processing apparatus and methods
US7769344B1 (en) 1981-11-03 2010-08-03 Personalized Media Communications, Llc Signal processing apparatus and methods

Cited By (93)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2495916A (en) * 1944-10-07 1950-01-31 Gen Electric Remote control receiver
US2545259A (en) * 1946-10-05 1951-03-13 Monmouth Lab Inc Multiple radio heterodyne distribution system
US4331973A (en) * 1980-10-21 1982-05-25 Iri, Inc. Panelist response scanning system
US4331974A (en) * 1980-10-21 1982-05-25 Iri, Inc. Cable television with controlled signal substitution
US4404589A (en) * 1980-10-21 1983-09-13 Iri, Inc. Cable television with multi-event signal substitution
USRE33808E (en) * 1980-10-21 1992-01-28 Information Resources, Inc. Cable television with multi-event signal substitution
US7764685B1 (en) 1981-11-03 2010-07-27 Personalized Media Communications, L.L.C. Signal processing apparatus and methods
US7747217B1 (en) 1981-11-03 2010-06-29 Personalized Media Communications, Llc Signal processing apparatus and methods
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