GB2106751B - Security identification system using pulse code modulation - Google Patents

Security identification system using pulse code modulation

Info

Publication number
GB2106751B
GB2106751B GB08126666A GB8126666A GB2106751B GB 2106751 B GB2106751 B GB 2106751B GB 08126666 A GB08126666 A GB 08126666A GB 8126666 A GB8126666 A GB 8126666A GB 2106751 B GB2106751 B GB 2106751B
Authority
GB
United Kingdom
Prior art keywords
identification system
pulse code
code modulation
security identification
security
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.)
Expired
Application number
GB08126666A
Other versions
GB2106751A (en
Inventor
Donald G Baker
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.)
Micro Tek Inc
Original Assignee
Micro Tek 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
Application filed by Micro Tek Inc filed Critical Micro Tek Inc
Priority to GB08126666A priority Critical patent/GB2106751B/en
Publication of GB2106751A publication Critical patent/GB2106751A/en
Application granted granted Critical
Publication of GB2106751B publication Critical patent/GB2106751B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set
    • H04M1/573—Line monitoring circuits for detecting caller identification

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
GB08126666A 1981-09-03 1981-09-03 Security identification system using pulse code modulation Expired GB2106751B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08126666A GB2106751B (en) 1981-09-03 1981-09-03 Security identification system using pulse code modulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08126666A GB2106751B (en) 1981-09-03 1981-09-03 Security identification system using pulse code modulation

Publications (2)

Publication Number Publication Date
GB2106751A GB2106751A (en) 1983-04-13
GB2106751B true GB2106751B (en) 1985-04-11

Family

ID=10524286

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08126666A Expired GB2106751B (en) 1981-09-03 1981-09-03 Security identification system using pulse code modulation

Country Status (1)

Country Link
GB (1) GB2106751B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8624514D0 (en) * 1986-10-13 1986-11-19 Parker B D Telephone systems
DE19651382A1 (en) * 1996-12-11 1998-06-18 Bosch Gmbh Robert Telephone device

Also Published As

Publication number Publication date
GB2106751A (en) 1983-04-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee