Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L1/00—Arrangements for detecting or preventing errors in the information received
  • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
  • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
  • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L1/00—Arrangements for detecting or preventing errors in the information received
  • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
  • H04L1/14—Arrangements for detecting or preventing errors in the information received by using return channel in which the signals are sent back to the transmitter to be checked ; echo systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L1/00—Arrangements for detecting or preventing errors in the information received
  • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
  • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L5/00—Arrangements affording multiple use of the transmission path
  • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
  • H04L5/143—Two-way operation using the same type of signal, i.e. duplex for modulated signals
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04M—TELEPHONIC COMMUNICATION
  • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
  • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors

Landscapes

• Engineering & Computer Science (AREA)
• Signal Processing (AREA)
• Computer Networks & Wireless Communication (AREA)
• Detection And Prevention Of Errors In Transmission (AREA)
• Mobile Radio Communication Systems (AREA)
• Monitoring And Testing Of Exchanges (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=10175885

Family Applications (2)

Family Applications After (1)

Country Status (6)

Families Citing this family (12)

• 0
  • NL NL265526D patent/NL265526A/xx unknown
  • NL NL260263D patent/NL260263A/xx unknown
• 1960
  • 1960-01-21 GB GB217860A patent/GB959555A/en not_active Expired
  • 1960-06-02 GB GB1953960A patent/GB950739A/en not_active Expired
  • 1960-06-24 GB GB2222160A patent/GB910453A/en not_active Expired
• 1961
  • 1961-01-20 FR FR850322A patent/FR1277853A/fr not_active Expired
  • 1961-06-01 FR FR863644A patent/FR79897E/fr not_active Expired
  • 1961-06-20 CH CH721761A patent/CH389287A/de unknown
  • 1961-06-22 DE DEJ20121A patent/DE1154657B/de active Pending
  • 1961-06-23 BE BE605312A patent/BE605312R/fr active
  • 1961-06-23 FR FR865901A patent/FR80018E/fr not_active Expired
  • 1961-06-23 FR FR865900A patent/FR80017E/fr not_active Expired

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