JPS5474667A - Level adjustment system - Google Patents

Level adjustment system

Info

Publication number
JPS5474667A
JPS5474667A JP14206677A JP14206677A JPS5474667A JP S5474667 A JPS5474667 A JP S5474667A JP 14206677 A JP14206677 A JP 14206677A JP 14206677 A JP14206677 A JP 14206677A JP S5474667 A JPS5474667 A JP S5474667A
Authority
JP
Japan
Prior art keywords
decoder
level adjustment
fed
digital signal
attenuated
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
JP14206677A
Other languages
Japanese (ja)
Inventor
Masaaki Sasagawa
Yoji Fukinuki
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP14206677A priority Critical patent/JPS5474667A/en
Publication of JPS5474667A publication Critical patent/JPS5474667A/en
Pending legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To preform level adjustment of analog input singal, by controlling the reference voltage of the local decoder digitally.
CONSTITUTION: When the attenuated data pulse is latched to the serial parallel conversion circuit 27 and is fed to the variable attenuator 26, the reference DC voltage from the reference voltage input terminal 23 is attenuated or amplified according to the numeric value, and it is fed to the decoder 21. The decoder 21 decodes the digital signal from the digital signal input terminals 16 to 20 and delivers it to the output terminal 22.
COPYRIGHT: (C)1979,JPO&Japio
JP14206677A 1977-11-26 1977-11-26 Level adjustment system Pending JPS5474667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14206677A JPS5474667A (en) 1977-11-26 1977-11-26 Level adjustment system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14206677A JPS5474667A (en) 1977-11-26 1977-11-26 Level adjustment system

Publications (1)

Publication Number Publication Date
JPS5474667A true JPS5474667A (en) 1979-06-14

Family

ID=15306626

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14206677A Pending JPS5474667A (en) 1977-11-26 1977-11-26 Level adjustment system

Country Status (1)

Country Link
JP (1) JPS5474667A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102119A (en) * 1980-01-21 1981-08-15 Hitachi Ltd Analog-to-digital converting circuit
JPS59143420A (en) * 1983-02-04 1984-08-17 Victor Co Of Japan Ltd Expanding device of resolution
JPS59193618A (en) * 1983-04-18 1984-11-02 Hitachi Ltd Digital-analog converting system
JPS6184116A (en) * 1984-09-24 1986-04-28 テクトロニツクス・インコーポレイテツド Method and circuit for controlling bias of digital-analog converter
JPS62121845U (en) * 1986-01-22 1987-08-03

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102119A (en) * 1980-01-21 1981-08-15 Hitachi Ltd Analog-to-digital converting circuit
JPS6333740B2 (en) * 1980-01-21 1988-07-06 Hitachi Ltd
JPS59143420A (en) * 1983-02-04 1984-08-17 Victor Co Of Japan Ltd Expanding device of resolution
JPS59193618A (en) * 1983-04-18 1984-11-02 Hitachi Ltd Digital-analog converting system
JPS6184116A (en) * 1984-09-24 1986-04-28 テクトロニツクス・インコーポレイテツド Method and circuit for controlling bias of digital-analog converter
JPS62121845U (en) * 1986-01-22 1987-08-03

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