ATA172277A - System zur uebermittlung von informationen unter benuetzung einer modulierbaren traegerwelle - Google Patents

System zur uebermittlung von informationen unter benuetzung einer modulierbaren traegerwelle

Info

Publication number
ATA172277A
ATA172277A AT771722A AT172277A ATA172277A AT A172277 A ATA172277 A AT A172277A AT 771722 A AT771722 A AT 771722A AT 172277 A AT172277 A AT 172277A AT A172277 A ATA172277 A AT A172277A
Authority
AT
Austria
Prior art keywords
modulable
transmitting information
carrier shaft
carrier
shaft
Prior art date
Application number
AT771722A
Other languages
English (en)
Other versions
AT374290B (de
Original Assignee
Lewis Security Syst Ltd
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 Lewis Security Syst Ltd filed Critical Lewis Security Syst Ltd
Priority to AT0172277A priority Critical patent/AT374290B/de
Publication of ATA172277A publication Critical patent/ATA172277A/de
Application granted granted Critical
Publication of AT374290B publication Critical patent/AT374290B/de

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/20—Individual registration on entry or exit involving the use of a pass
    • G07C9/28—Individual registration on entry or exit involving the use of a pass the pass enabling tracking or indicating presence

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Alarm Systems (AREA)
AT0172277A 1977-03-14 1977-03-14 System zur uebermittlung von informationen unter benuetzung einer modulierbaren traegerwelle AT374290B (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT0172277A AT374290B (de) 1977-03-14 1977-03-14 System zur uebermittlung von informationen unter benuetzung einer modulierbaren traegerwelle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0172277A AT374290B (de) 1977-03-14 1977-03-14 System zur uebermittlung von informationen unter benuetzung einer modulierbaren traegerwelle

Publications (2)

Publication Number Publication Date
ATA172277A true ATA172277A (de) 1983-08-15
AT374290B AT374290B (de) 1984-04-10

Family

ID=3519589

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0172277A AT374290B (de) 1977-03-14 1977-03-14 System zur uebermittlung von informationen unter benuetzung einer modulierbaren traegerwelle

Country Status (1)

Country Link
AT (1) AT374290B (de)

Also Published As

Publication number Publication date
AT374290B (de) 1984-04-10

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee