Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L27/00—Modulated-carrier systems
  • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L25/00—Baseband systems
  • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
  • H04L25/20—Repeater circuits; Relay circuits
  • H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current

Landscapes

• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Power Engineering (AREA)
• Devices For Supply Of Signal Current (AREA)
• Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=19782418

Family Applications (1)

Country Status (6)

Family Cites Families (3)

• 0
  • FR FR958761D patent/FR958761A/fr not_active Expired
  • NL NL67468D patent/NL67468C/xx active
  • BE BE483169D patent/BE483169A/xx unknown
• 1947
  • 1947-12-17 US US792278A patent/US2551694A/en not_active Expired - Lifetime
  • 1947-12-19 CH CH283928D patent/CH283928A/fr unknown
  • 1947-12-31 GB GB34973/47A patent/GB661866A/en not_active Expired

Also Published As

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