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JPS6486722A - Power line communication equipment - Google Patents

Power line communication equipment

Info

Publication number
JPS6486722A
JPS6486722A JP24538387A JP24538387A JPS6486722A JP S6486722 A JPS6486722 A JP S6486722A JP 24538387 A JP24538387 A JP 24538387A JP 24538387 A JP24538387 A JP 24538387A JP S6486722 A JPS6486722 A JP S6486722A
Authority
JP
Japan
Prior art keywords
pseudo
signal
power line
noise generator
master station
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.)
Pending
Application number
JP24538387A
Other languages
Japanese (ja)
Inventor
Kenji Kobayashi
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
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP24538387A priority Critical patent/JPS6486722A/en
Publication of JPS6486722A publication Critical patent/JPS6486722A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To use a power line to perform quick and stable communication by using an M series for signal subjected to spectrum spread different from that of the M series for synchronization to gather information of slave stations to a master station by the polling answerback system. CONSTITUTION:The polling signal to plural slave stations is inputted from a signal transmission terminal 1 to a balanced modulator 6 and is modulated by a pseudo-random code M1 determined by a pseudo-noise generator 3 to become a transmission spread signal #1. This signal #1 is inputted to an adder 6 and a pseudo-random signal M0 determined by a pseudo-noise generator 4 is added. The reception spread signal transmitted from the master station through the power line is demodulated in a delay lock loop 115 by a pseudo- random code M0 to find the division of one information bit. A pseudo-noise generator 116 is controlled by this information bit to synchronize the slave station with the master station.
JP24538387A 1987-09-29 1987-09-29 Power line communication equipment Pending JPS6486722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24538387A JPS6486722A (en) 1987-09-29 1987-09-29 Power line communication equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24538387A JPS6486722A (en) 1987-09-29 1987-09-29 Power line communication equipment

Publications (1)

Publication Number Publication Date
JPS6486722A true JPS6486722A (en) 1989-03-31

Family

ID=17132843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24538387A Pending JPS6486722A (en) 1987-09-29 1987-09-29 Power line communication equipment

Country Status (1)

Country Link
JP (1) JPS6486722A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002071644A1 (en) * 2001-03-07 2002-09-12 Planet System Co., Ltd. Plug-and-play power line communication device
JP2008286871A (en) * 2007-05-15 2008-11-27 Olympus Corp Optical microscope

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002071644A1 (en) * 2001-03-07 2002-09-12 Planet System Co., Ltd. Plug-and-play power line communication device
JP2008286871A (en) * 2007-05-15 2008-11-27 Olympus Corp Optical microscope

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