JPH0129099B2 - - Google Patents

Info

Publication number
JPH0129099B2
JPH0129099B2 JP56081582A JP8158281A JPH0129099B2 JP H0129099 B2 JPH0129099 B2 JP H0129099B2 JP 56081582 A JP56081582 A JP 56081582A JP 8158281 A JP8158281 A JP 8158281A JP H0129099 B2 JPH0129099 B2 JP H0129099B2
Authority
JP
Japan
Prior art keywords
frequency
signal
voltage
crystal oscillator
current
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
JP56081582A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57194642A (en
Inventor
Kazuhiko Kumagai
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.)
NEC Corp
Original Assignee
Nippon Electric Co Ltd
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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP8158281A priority Critical patent/JPS57194642A/ja
Publication of JPS57194642A publication Critical patent/JPS57194642A/ja
Publication of JPH0129099B2 publication Critical patent/JPH0129099B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • H04B3/542—Systems for transmission via power distribution lines the information being in digital form
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5437—Wired telephone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5491—Systems for power line communications using filtering and bypassing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP8158281A 1981-05-27 1981-05-27 Power line carrier telephony terminal equipment Granted JPS57194642A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8158281A JPS57194642A (en) 1981-05-27 1981-05-27 Power line carrier telephony terminal equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8158281A JPS57194642A (en) 1981-05-27 1981-05-27 Power line carrier telephony terminal equipment

Publications (2)

Publication Number Publication Date
JPS57194642A JPS57194642A (en) 1982-11-30
JPH0129099B2 true JPH0129099B2 (de) 1989-06-07

Family

ID=13750305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8158281A Granted JPS57194642A (en) 1981-05-27 1981-05-27 Power line carrier telephony terminal equipment

Country Status (1)

Country Link
JP (1) JPS57194642A (de)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5516571A (en) * 1978-07-21 1980-02-05 Nec Corp Balanced hybrid circuit

Also Published As

Publication number Publication date
JPS57194642A (en) 1982-11-30

Similar Documents

Publication Publication Date Title
US4644526A (en) Full duplex frequency division multiplex communication system
US4480327A (en) Single channel duplex communication system
JPH07297860A (ja) 無線局装置
EP0807344B1 (de) Verfahren und anordnung zum erzeugen von mehreren quadraturmodulierten trägern
US3147437A (en) Single side band radio carrier retrieval system
KR830001769B1 (ko) 트랜시버
US4100376A (en) Pilot tone demodulator
JPH0129099B2 (de)
US2284706A (en) Arrangement for the transmission of intelligence
US2910535A (en) Electric carrier telegraph systems
US4209664A (en) Carrier frequency sound transmission system
US1641289A (en) Radio signaling system
US4234950A (en) Telephone station carrier system
JPS61163742A (ja) 秘話装置
JPS6364929B2 (de)
JP2504015B2 (ja) パイロット信号検出回路
JPS60186143A (ja) Ｓｓｂ通信用信号分岐插入方式
JP2738480B2 (ja) 周波数帯域圧縮無線通信方式
JPH06152565A (ja) コヒーレント光伝送装置
JPS6351613B2 (de)
SU1203714A2 (ru) Способ передачи и приема информации
GB336096A (en) Improvements in multiplex high frequency signalling systems
JPS60106241A (ja) 打合せ信号伝送方式
JPH02151142A (ja) 回線品質モニタ付き通信装置
JPH0355059B2 (de)