SE8702568L - PROVIDED TO TRANSFER A BINARY CODE AND CODE CARRIER BEFORE IMPLEMENTING THE SET - Google Patents

PROVIDED TO TRANSFER A BINARY CODE AND CODE CARRIER BEFORE IMPLEMENTING THE SET

Info

Publication number
SE8702568L
SE8702568L SE8702568A SE8702568A SE8702568L SE 8702568 L SE8702568 L SE 8702568L SE 8702568 A SE8702568 A SE 8702568A SE 8702568 A SE8702568 A SE 8702568A SE 8702568 L SE8702568 L SE 8702568L
Authority
SE
Sweden
Prior art keywords
code
receiver
bit
carrier
periodic signal
Prior art date
Application number
SE8702568A
Other languages
Swedish (sv)
Other versions
SE8702568D0 (en
SE458564B (en
Inventor
S Lundgren
Original Assignee
Lundgren & Nordstrand Ab
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 Lundgren & Nordstrand Ab filed Critical Lundgren & Nordstrand Ab
Priority to SE8702568A priority Critical patent/SE458564B/en
Publication of SE8702568D0 publication Critical patent/SE8702568D0/en
Priority to PCT/SE1988/000343 priority patent/WO1988010433A1/en
Priority to AU19871/88A priority patent/AU1987188A/en
Publication of SE8702568L publication Critical patent/SE8702568L/en
Publication of SE458564B publication Critical patent/SE458564B/en

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
    • G06K7/10336—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil
    • 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)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • Circuits Of Receivers In General (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Near-Field Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

In a method for transferring a binary code consisting of a plurality of bits from a code carrier to a code receiver, a periodic signal is transferred from the code receiver to the code carrier. In each period of the periodic signal supplied, one bit in the code is transferred from the code carrier to the code receiver in that the signal supplied to the code carrier is given an increase depending on the value of said bit. The signal increase is detected in the code receiver. A code carrier for implementing the method has a memory (M) which is sequentially addressable by the periodic signal supplied from the code receiver and has a number of bit cells corresponding to the number of bits in the code, and a pulse generator (P1, P2, T1) connected to an output of the memory and so controlled as to give the periodic signal in each period thereof an increase depending on the bit value on the output of the memory.
SE8702568A 1987-06-22 1987-06-22 PROVIDED TO TRANSFER A BINARY CODE AND CODE CARRIER BEFORE IMPLEMENTING THE SET SE458564B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE8702568A SE458564B (en) 1987-06-22 1987-06-22 PROVIDED TO TRANSFER A BINARY CODE AND CODE CARRIER BEFORE IMPLEMENTING THE SET
PCT/SE1988/000343 WO1988010433A1 (en) 1987-06-22 1988-06-21 Method for transferring a binary code and code carrier for implementing the method
AU19871/88A AU1987188A (en) 1987-06-22 1988-06-21 Method for transferring a binary code and code carrier for implementing the method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8702568A SE458564B (en) 1987-06-22 1987-06-22 PROVIDED TO TRANSFER A BINARY CODE AND CODE CARRIER BEFORE IMPLEMENTING THE SET

Publications (3)

Publication Number Publication Date
SE8702568D0 SE8702568D0 (en) 1987-06-22
SE8702568L true SE8702568L (en) 1988-12-23
SE458564B SE458564B (en) 1989-04-10

Family

ID=20368921

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8702568A SE458564B (en) 1987-06-22 1987-06-22 PROVIDED TO TRANSFER A BINARY CODE AND CODE CARRIER BEFORE IMPLEMENTING THE SET

Country Status (3)

Country Link
AU (1) AU1987188A (en)
SE (1) SE458564B (en)
WO (1) WO1988010433A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5418353A (en) * 1991-07-23 1995-05-23 Hitachi Maxell, Ltd. Non-contact, electromagnetically coupled transmission and receiving system for IC cards
EP0542229B1 (en) * 1991-11-12 2002-06-05 Dai Nippon Printing Co., Ltd. Method for contactless communication between a semiconductor data recording medium and a reader/writer device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3713148A (en) * 1970-05-21 1973-01-23 Communications Services Corp I Transponder apparatus and system
US3855592A (en) * 1973-08-20 1974-12-17 Gen Electric Transponder having high character capacity
AU525251B2 (en) * 1978-06-02 1982-10-28 Amalgamated Wireless (Australasia) Limited Identification system
DE3438923A1 (en) * 1983-10-26 1985-05-09 ITW New Zealand Ltd., Avondale, Auckland ELECTRONIC MARKING DEVICE FOR TRANSMITTING IDENTIFICATION INFORMATION

Also Published As

Publication number Publication date
AU1987188A (en) 1989-01-19
SE8702568D0 (en) 1987-06-22
SE458564B (en) 1989-04-10
WO1988010433A1 (en) 1988-12-29

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