GB1196522A - Audio Induction System - Google Patents

Audio Induction System

Info

Publication number
GB1196522A
GB1196522A GB482968A GB482968A GB1196522A GB 1196522 A GB1196522 A GB 1196522A GB 482968 A GB482968 A GB 482968A GB 482968 A GB482968 A GB 482968A GB 1196522 A GB1196522 A GB 1196522A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
loop
system
signals
signalling
negative
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
GB482968A
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.)
Dictaphone Corp
Original Assignee
Dictaphone 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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B5/00Near-field transmission systems, e.g. inductive loop type
    • H04B5/0075Near-field transmission systems, e.g. inductive loop type using inductive coupling
    • H04B5/0081Near-field transmission systems, e.g. inductive loop type using inductive coupling with antenna coils

Abstract

1,196,522. Inductive signalling. DICTAPHONE CORP. 30 Jan., 1968 [31 Jan., J967]. No. 4829/68. Heading H4U. In an inductive signalling system a further loop is inductively coupled to the transmitting loop to develop a negative feedback voltage which is fed back to an input of the transmitter to improve the linearity of the system. As shown, audio signals from a tape recorder 12 are amplified at 14 and supplied via transmitting loop 16 to the inductively coupled receivers 20a &c. A second loop 18 adjacent the loop 16 develops negative feedback signals which are applied to the input of the amplifier 14. The system also reduces the effect of interfering signals.
GB482968A 1967-01-31 1968-01-30 Audio Induction System Expired GB1196522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US61285267 true 1967-01-31 1967-01-31

Publications (1)

Publication Number Publication Date
GB1196522A true true GB1196522A (en) 1970-06-24

Family

ID=24454886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB482968A Expired GB1196522A (en) 1967-01-31 1968-01-30 Audio Induction System

Country Status (1)

Country Link
GB (1) GB1196522A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138657A (en) * 1983-04-22 1984-10-24 Stephen John Irwin Near Field Signalling System
GB2178617A (en) * 1985-07-23 1987-02-11 Recoton Corp Tv stereo adaptor
GB2185364A (en) * 1985-12-13 1987-07-15 Terence Henry Leather Communication system
US4750206A (en) * 1986-10-28 1988-06-07 Recoton Corporation Adapter for TV stereo, SAP and auxiliary signals

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138657A (en) * 1983-04-22 1984-10-24 Stephen John Irwin Near Field Signalling System
GB2178617A (en) * 1985-07-23 1987-02-11 Recoton Corp Tv stereo adaptor
GB2178617B (en) * 1985-07-23 1989-08-09 Recoton Corp Tv stereo adaptor
GB2185364A (en) * 1985-12-13 1987-07-15 Terence Henry Leather Communication system
GB2185364B (en) * 1985-12-13 1990-05-16 Terence Henry Leather Communication system
US4750206A (en) * 1986-10-28 1988-06-07 Recoton Corporation Adapter for TV stereo, SAP and auxiliary signals

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees