FR654656A - Pupin cable for simultaneous low frequency and carrier frequency telephony - Google Patents

Pupin cable for simultaneous low frequency and carrier frequency telephony

Info

Publication number
FR654656A
FR654656A FR654656DA FR654656A FR 654656 A FR654656 A FR 654656A FR 654656D A FR654656D A FR 654656DA FR 654656 A FR654656 A FR 654656A
Authority
FR
France
Prior art keywords
pupin
cable
telephony
simultaneous low
low frequency
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
Other languages
French (fr)
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR654656A publication Critical patent/FR654656A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/78—Circuit arrangements in which low-frequency speech signals proceed in one direction on the line, while speech signals proceeding in the other direction on the line are modulated on a high-frequency carrier signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR654656D 1928-11-10 1928-05-24 Pupin cable for simultaneous low frequency and carrier frequency telephony Expired FR654656A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE335108X 1928-11-10

Publications (1)

Publication Number Publication Date
FR654656A true FR654656A (en) 1929-04-08

Family

ID=6218946

Family Applications (4)

Application Number Title Priority Date Filing Date
FR654656D Expired FR654656A (en) 1928-11-10 1928-05-24 Pupin cable for simultaneous low frequency and carrier frequency telephony
FR37609D Expired FR37609E (en) 1928-11-10 1929-11-09 Pupin cable for simultaneous low frequency and carrier frequency telephony
FR42216D Expired FR42216E (en) 1928-11-10 1932-07-06 Pupin cable for simultaneous low frequency and carrier frequency telephony
FR43820D Expired FR43820E (en) 1928-11-10 1933-06-28 Pupin cable for simultaneous low frequency and carrier frequency telephony

Family Applications After (3)

Application Number Title Priority Date Filing Date
FR37609D Expired FR37609E (en) 1928-11-10 1929-11-09 Pupin cable for simultaneous low frequency and carrier frequency telephony
FR42216D Expired FR42216E (en) 1928-11-10 1932-07-06 Pupin cable for simultaneous low frequency and carrier frequency telephony
FR43820D Expired FR43820E (en) 1928-11-10 1933-06-28 Pupin cable for simultaneous low frequency and carrier frequency telephony

Country Status (3)

Country Link
FR (4) FR654656A (en)
GB (1) GB335108A (en)
NL (1) NL38900C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE919238C (en) * 1942-06-24 1954-10-18 Siemens Ag Carrier frequency transmission system
US4713557A (en) * 1984-09-26 1987-12-15 Xilinx, Inc. Bidirectional buffer amplifier
US4695740A (en) * 1984-09-26 1987-09-22 Xilinx, Inc. Bidirectional buffer amplifier
US6664807B1 (en) 2002-01-22 2003-12-16 Xilinx, Inc. Repeater for buffering a signal on a long data line of a programmable logic device

Also Published As

Publication number Publication date
FR42216E (en) 1933-06-15
FR43820E (en) 1934-09-06
NL38900C (en)
GB335108A (en) 1930-09-18
FR37609E (en) 1930-01-08

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