CA2003763A1 - Apparatus and method for providing digital audio in the fm broadcast band - Google Patents

Apparatus and method for providing digital audio in the fm broadcast band

Info

Publication number
CA2003763A1
CA2003763A1 CA2003763A CA2003763A CA2003763A1 CA 2003763 A1 CA2003763 A1 CA 2003763A1 CA 2003763 A CA2003763 A CA 2003763A CA 2003763 A CA2003763 A CA 2003763A CA 2003763 A1 CA2003763 A1 CA 2003763A1
Authority
CA
Canada
Prior art keywords
channels
audio
digitized
band
over
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.)
Granted
Application number
CA2003763A
Other languages
French (fr)
Other versions
CA2003763C (en
Inventor
Clyde Robbins
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.)
Arris Technology Inc
Original Assignee
General Instrument 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23074562&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2003763(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by General Instrument Corp filed Critical General Instrument Corp
Publication of CA2003763A1 publication Critical patent/CA2003763A1/en
Application granted granted Critical
Publication of CA2003763C publication Critical patent/CA2003763C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04H20/65—Arrangements characterised by transmission systems for broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/86—Arrangements characterised by the broadcast information itself
    • H04H20/95—Arrangements characterised by the broadcast information itself characterised by a specific format, e.g. MP3 (MPEG-1 Audio Layer 3)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services

Abstract

ABSTRACT

Method and apparatus are provided for transmitting, receiving, and reproducing digital audio signals as discrete carriers similar to standard FM broadcast signals. An audio signal is digitized using, for example, adaptive delta modulation techniques. Several channels of audio information, such as left and right stereo channels and a second audio program ( "SAP" ) channel can all be digitized and incorporated onto the digital broadcast signal carrier. The digitized audio signal may be modulated using multiphase modulation of the carrier of an FM broadcast band signal. A
plurality of audio channels may be digitized and transmitted over the airwaves, or over a cable transmission network. Channels of nondigitized audio channels may be interspersed with the digitized audio channels. Source material for the digitized audio channels may be provided to a cable headend over the cable transmission network outside the FM band, and rebroadcast over the cable transmission network in the FM band.
Advantageously, an "extended" FM band between 72-120 MHz is employed to provide more channels than the "standard" FM band of 88-108 MHZ.
CA002003763A 1988-12-06 1989-11-23 Apparatus and method for providing digital audio in the fm broadcast band Expired - Fee Related CA2003763C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/280,770 1988-12-06
US07/280,770 US5038402A (en) 1988-12-06 1988-12-06 Apparatus and method for providing digital audio in the FM broadcast band

Publications (2)

Publication Number Publication Date
CA2003763A1 true CA2003763A1 (en) 1990-06-06
CA2003763C CA2003763C (en) 1993-10-05

Family

ID=23074562

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002003763A Expired - Fee Related CA2003763C (en) 1988-12-06 1989-11-23 Apparatus and method for providing digital audio in the fm broadcast band

Country Status (12)

Country Link
US (2) US5038402A (en)
EP (1) EP0372499B2 (en)
JP (1) JP2872303B2 (en)
AT (1) ATE129836T1 (en)
CA (1) CA2003763C (en)
DE (1) DE68924695T3 (en)
DK (1) DK612389A (en)
ES (1) ES2080061T5 (en)
GR (1) GR3018373T3 (en)
HK (1) HK1000335A1 (en)
IE (1) IE71686B1 (en)
NO (1) NO894855L (en)

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Also Published As

Publication number Publication date
HK1000335A1 (en) 1998-02-27
ES2080061T5 (en) 2001-09-16
IE893737L (en) 1990-06-06
EP0372499B2 (en) 2001-05-23
DK612389D0 (en) 1989-12-05
JPH02260726A (en) 1990-10-23
JP2872303B2 (en) 1999-03-17
DE68924695T2 (en) 1996-06-05
ES2080061T3 (en) 1996-02-01
EP0372499A3 (en) 1991-09-11
US5293633A (en) 1994-03-08
EP0372499A2 (en) 1990-06-13
NO894855D0 (en) 1989-12-05
GR3018373T3 (en) 1996-03-31
DE68924695D1 (en) 1995-12-07
DE68924695T3 (en) 2002-05-29
EP0372499B1 (en) 1995-11-02
CA2003763C (en) 1993-10-05
NO894855L (en) 1990-06-07
US5038402A (en) 1991-08-06
IE71686B1 (en) 1997-02-26
DK612389A (en) 1990-06-07
ATE129836T1 (en) 1995-11-15

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