EP0135192A3 - Encoding of transmitted program material - Google Patents

Encoding of transmitted program material Download PDF

Info

Publication number
EP0135192A3
EP0135192A3 EP84110927A EP84110927A EP0135192A3 EP 0135192 A3 EP0135192 A3 EP 0135192A3 EP 84110927 A EP84110927 A EP 84110927A EP 84110927 A EP84110927 A EP 84110927A EP 0135192 A3 EP0135192 A3 EP 0135192A3
Authority
EP
European Patent Office
Prior art keywords
mark
bit
signal
space
code
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.)
Withdrawn
Application number
EP84110927A
Other languages
German (de)
French (fr)
Other versions
EP0135192A2 (en
Inventor
Jonathan M. Howard
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.)
Audicom Corp
Original Assignee
Audicom 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 Audicom Corp filed Critical Audicom Corp
Publication of EP0135192A2 publication Critical patent/EP0135192A2/en
Publication of EP0135192A3 publication Critical patent/EP0135192A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/30—Arrangements for simultaneous broadcast of plural pieces of information by a single channel
    • H04H20/31—Arrangements for simultaneous broadcast of plural pieces of information by a single channel using in-band signals, e.g. subsonic or cue signal

Abstract

An audio program is encoded with a subaudible binary code. A first value bit (mark) is a first frequency signal and a second value bit (space) is a second frequency signal. The coded message includes an initialization period constituted by a signal having the mark frequency. In decoding, the mark and space signals are detected through first and second band pass filters specific to the mark and space signal frequencies. The mark and space frequencies are sufficiently different to permit separate filtering. The time duration for each bit of the code is substantial. The decoder through a phase locked loop and integrator reads the bit on the basis of the average value of the bit over the duration of the bit. A synchronization signal provides for synchronous reading of the code. This signal that initiates the decoding operation is generated only in response to the coincident detection of the initialization signal, the notch and a mark response at the phase locked loop.
EP84110927A 1983-09-16 1984-09-13 Encoding of transmitted program material Withdrawn EP0135192A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US53319383A 1983-09-16 1983-09-16
US533193 1983-09-16

Publications (2)

Publication Number Publication Date
EP0135192A2 EP0135192A2 (en) 1985-03-27
EP0135192A3 true EP0135192A3 (en) 1987-04-29

Family

ID=24124894

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110927A Withdrawn EP0135192A3 (en) 1983-09-16 1984-09-13 Encoding of transmitted program material

Country Status (4)

Country Link
EP (1) EP0135192A3 (en)
JP (1) JPS6086932A (en)
AU (1) AU3290084A (en)
BR (1) BR8404640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8560913B2 (en) 2008-05-29 2013-10-15 Intrasonics S.A.R.L. Data embedding system

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8611014D0 (en) * 1986-05-06 1986-06-11 Emi Plc Thorn Signal identification
FR2611334B1 (en) * 1987-02-23 1993-02-12 Belin Paul DEVICE FOR SIMULTANEOUS TRANSMISSION IN A PREDETERMINED FREQUENCY BAND OF A DIGITAL SIGNAL AND AN ANALOG SIGNAL WHICH CAN OCCUTE THE WHOLE BAND
US4945412A (en) * 1988-06-14 1990-07-31 Kramer Robert A Method of and system for identification and verification of broadcasting television and radio program segments
GB8824969D0 (en) * 1988-10-25 1988-11-30 Emi Plc Thorn Identification codes
FR2681997A1 (en) * 1991-09-30 1993-04-02 Arbitron Cy METHOD AND DEVICE FOR AUTOMATICALLY IDENTIFYING A PROGRAM COMPRISING A SOUND SIGNAL
US5319735A (en) * 1991-12-17 1994-06-07 Bolt Beranek And Newman Inc. Embedded signalling
GR910100504A (en) * 1991-12-18 1993-08-31 Baranoff Rossine Dimitri Method and arrangement for the transmission of coded data
US5630203A (en) * 1993-01-12 1997-05-13 Weinblatt; Lee S. Technique for surveying a radio or a television audience
US5812937B1 (en) * 1993-04-08 2000-09-19 Digital Dj Inc Broadcast data system with multiple-tuner receiver
GB9500285D0 (en) * 1995-01-07 1995-03-01 Central Research Lab Ltd A method of labelling an audio signal
GB9604659D0 (en) 1996-03-05 1996-05-01 Central Research Lab Ltd Audio signal identification
WO1997034383A1 (en) * 1996-03-13 1997-09-18 Digital D.J. Incorporated Subcarrier injection system and method using adaptive level-shifted minimum shift keying
GB9700854D0 (en) 1997-01-16 1997-03-05 Scient Generics Ltd Sub-audible acoustic data transmission mechanism
JP3690043B2 (en) * 1997-03-03 2005-08-31 ソニー株式会社 Audio information transmission apparatus and method, and audio information recording apparatus
JPH1155201A (en) 1997-07-29 1999-02-26 Sony Corp Device, method and system for information processing and transmitting medium
JP3056720B2 (en) * 1998-10-27 2000-06-26 有限会社ディー・ディー・マーケティング Commercial message viewing evaluation system
GB9917985D0 (en) 1999-07-30 1999-09-29 Scient Generics Ltd Acoustic communication system
AU2211102A (en) 2000-11-30 2002-06-11 Scient Generics Ltd Acoustic communication system
EP1340320B1 (en) 2000-11-30 2008-10-15 Intrasonics Limited Apparatus and system for using data signal embedded into an acoustic signal
EP1464172B1 (en) 2001-12-24 2013-04-24 Intrasonics S.A.R.L. Captioning system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1227501B (en) * 1965-01-20 1966-10-27 Telefunken Patent Procedure for checking data transmissions for freedom from interference
US3845391A (en) * 1969-07-08 1974-10-29 Audicom Corp Communication including submerged identification signal
US4156229A (en) * 1977-01-31 1979-05-22 Sperry-Sun, Inc. Bit identification system for borehole acoustical telemetry system
US4188503A (en) * 1978-07-05 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Digital data communications system
DE3022287A1 (en) * 1980-06-13 1981-12-17 Siemens AG, 1000 Berlin und 8000 München FSK receiver compensating for transmitter frequency variations - has detector and compensator loops with different settling times

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1227501B (en) * 1965-01-20 1966-10-27 Telefunken Patent Procedure for checking data transmissions for freedom from interference
US3845391A (en) * 1969-07-08 1974-10-29 Audicom Corp Communication including submerged identification signal
US4156229A (en) * 1977-01-31 1979-05-22 Sperry-Sun, Inc. Bit identification system for borehole acoustical telemetry system
US4188503A (en) * 1978-07-05 1980-02-12 The United States Of America As Represented By The Secretary Of The Army Digital data communications system
DE3022287A1 (en) * 1980-06-13 1981-12-17 Siemens AG, 1000 Berlin und 8000 München FSK receiver compensating for transmitter frequency variations - has detector and compensator loops with different settling times

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELECTRONIC DESIGN, vol. 27, no. 8, 12 April 1979, pages 110-115, Rochelle, US; I. REFIOGLU et al.: "A frequency-shift-keyed modem in LSI? All it takes for full duplex is two ICs". *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8560913B2 (en) 2008-05-29 2013-10-15 Intrasonics S.A.R.L. Data embedding system

Also Published As

Publication number Publication date
JPS6086932A (en) 1985-05-16
AU3290084A (en) 1985-03-21
EP0135192A2 (en) 1985-03-27
BR8404640A (en) 1985-08-13

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Effective date: 19870331

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Inventor name: HOWARD, JONATHAN M.