Classifications

• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B3/00—Audible signalling systems, e.g. audible personal calling systems
  • G08B3/10—Audible signalling systems, e.g. audible personal calling systems using electric transmission; using electromagnetic transmission
  • G08B3/1008—Personal calling arrangements or devices, i.e. paging systems
• • H—ELECTRICITY
  • H03—ELECTRONIC CIRCUITRY
  • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
  • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
  • H04L9/06—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols the encryption apparatus using shift registers or memories for block-wise or stream coding, e.g. DES systems or RC4; Hash functions; Pseudorandom sequence generators
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
  • H04L9/50—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using hash chains, e.g. blockchains or hash trees

Landscapes

• Engineering & Computer Science (AREA)
• Computer Security & Cryptography (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Electromagnetism (AREA)
• General Physics & Mathematics (AREA)
• Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
• Game Rules And Presentations Of Slot Machines (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=3568335

Family Applications (1)

Country Status (7)

Families Citing this family (1)

• 1970
  • 1970-05-27 AT AT478870A patent/AT318017B/de not_active IP Right Cessation
• 1971
  • 1971-04-20 DE DE19712119121 patent/DE2119121B2/de active Granted
  • 1971-05-04 CS CS3229A patent/CS166026B2/cs unknown
  • 1971-05-11 GB GB1427771*[A patent/GB1322665A/en not_active Expired
  • 1971-05-21 CH CH745571A patent/CH530052A/de not_active IP Right Cessation
  • 1971-05-25 SE SE7106694A patent/SE381787B/xx unknown
  • 1971-05-25 FR FR7118766A patent/FR2093674A5/fr not_active Expired

Also Published As

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