CA2202044A1 - Transmitting digital data using multiple subcarriers - Google Patents

Transmitting digital data using multiple subcarriers

Info

Publication number
CA2202044A1
CA2202044A1 CA002202044A CA2202044A CA2202044A1 CA 2202044 A1 CA2202044 A1 CA 2202044A1 CA 002202044 A CA002202044 A CA 002202044A CA 2202044 A CA2202044 A CA 2202044A CA 2202044 A1 CA2202044 A1 CA 2202044A1
Authority
CA
Canada
Prior art keywords
subcarrier
transmitting digital
multiple subcarriers
message
digital data
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
CA002202044A
Other languages
French (fr)
Other versions
CA2202044C (en
Inventor
Daniel J. Park
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.)
Seiko Instruments Inc
Original Assignee
Daniel J. Park
Seiko Communications Holding N.V.
Seiko Telecommunication Systems Inc.
Seiko Communications Holdings N.V.
Seiko Instruments Inc.
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
Priority claimed from US08/327,256 external-priority patent/US5649297A/en
Application filed by Daniel J. Park, Seiko Communications Holding N.V., Seiko Telecommunication Systems Inc., Seiko Communications Holdings N.V., Seiko Instruments Inc. filed Critical Daniel J. Park
Publication of CA2202044A1 publication Critical patent/CA2202044A1/en
Application granted granted Critical
Publication of CA2202044C publication Critical patent/CA2202044C/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
    • H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
    • H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
    • H04H20/34—Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H2201/00—Aspects of broadcast communication
    • H04H2201/70—Aspects of broadcast communication characterised in that receivers can be addressed

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

Two separate subcarriers (16, 22) are used to transmit portions of a single message to one or more receivers on an FM radio signal.
The synchronization and addressing data necessary to identify the message to a target receiver is located in the first subcarrier. The second subcarrier, in turn, consists almost entirely of raw message data. Thus, transmitting multiple subcarriers substantially increases the overall data transmission payload when transmitting digital messages. Because each subcarrier is located within a different frequency band, the communication system is also adaptable to different subcarrier allotments in the FM baseband.
CA002202044A 1994-10-21 1995-09-21 Transmitting digital data using multiple subcarriers Expired - Fee Related CA2202044C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/327,256 US5649297A (en) 1994-10-21 1994-10-21 Transmitting digital data using multiple subcarriers
US08/327,256 1994-10-21
PCT/US1995/012074 WO1996013131A1 (en) 1994-10-21 1995-09-21 Transmitting digital data using multiple subcarriers

Publications (2)

Publication Number Publication Date
CA2202044A1 true CA2202044A1 (en) 1996-05-02
CA2202044C CA2202044C (en) 2007-02-06

Family

ID=37734878

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002202044A Expired - Fee Related CA2202044C (en) 1994-10-21 1995-09-21 Transmitting digital data using multiple subcarriers

Country Status (1)

Country Link
CA (1) CA2202044C (en)

Also Published As

Publication number Publication date
CA2202044C (en) 2007-02-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed