JPS6436135A - Automatic multi-carrier level control circuit - Google Patents

Automatic multi-carrier level control circuit

Info

Publication number
JPS6436135A
JPS6436135A JP62190113A JP19011387A JPS6436135A JP S6436135 A JPS6436135 A JP S6436135A JP 62190113 A JP62190113 A JP 62190113A JP 19011387 A JP19011387 A JP 19011387A JP S6436135 A JPS6436135 A JP S6436135A
Authority
JP
Japan
Prior art keywords
level
level difference
control circuit
carriers
adjust
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
JP62190113A
Other languages
Japanese (ja)
Inventor
Noriyuki Asari
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 JP62190113A priority Critical patent/JPS6436135A/en
Publication of JPS6436135A publication Critical patent/JPS6436135A/en
Pending legal-status Critical Current

Links

Landscapes

  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To attain excellent transmission by providing plural band pass filters, a level detection section of each carrier and a level adjustment section to adjust the level difference between carriers. CONSTITUTION:Signal having frequencies F1, F2 supplied from an input terminal 1 are passed through filters 2-1, 2-1, and variable resistance attenuators 3-1, 3-2 respectively. The resulting signals are detected by detectors 4-1, 4-2. The DC output corresponding to the power is amplified by DCAMP 5-1, 5-2 and a differential amplifier AMP6 outputs a voltage in response to the level difference of the signals F1, F2. The output voltage controls the variable resistance attenuator 3-1, 3-2 to make both the output level equal to each other. Thus, it is possible to adjust the level difference between the carriers, and excellent transmission is implemented.
JP62190113A 1987-07-31 1987-07-31 Automatic multi-carrier level control circuit Pending JPS6436135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62190113A JPS6436135A (en) 1987-07-31 1987-07-31 Automatic multi-carrier level control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62190113A JPS6436135A (en) 1987-07-31 1987-07-31 Automatic multi-carrier level control circuit

Publications (1)

Publication Number Publication Date
JPS6436135A true JPS6436135A (en) 1989-02-07

Family

ID=16252597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62190113A Pending JPS6436135A (en) 1987-07-31 1987-07-31 Automatic multi-carrier level control circuit

Country Status (1)

Country Link
JP (1) JPS6436135A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108992A1 (en) * 2001-02-23 2002-09-12 Schott Glas Borosilicate glass used in the production of luminescent tubes for displays, for vehicle brake lights, flashlights and gas discharge lamps contains oxides of silicon, boron, aluminum, sodium, potassium, iron and titanium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10108992A1 (en) * 2001-02-23 2002-09-12 Schott Glas Borosilicate glass used in the production of luminescent tubes for displays, for vehicle brake lights, flashlights and gas discharge lamps contains oxides of silicon, boron, aluminum, sodium, potassium, iron and titanium
DE10108992C2 (en) * 2001-02-23 2003-04-03 Schott Glas Solarization-stable borosilicate glass and its uses

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