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JPS54101076A - Digital program voltage generator - Google Patents

Digital program voltage generator

Info

Publication number
JPS54101076A
JPS54101076A JP796478A JP796478A JPS54101076A JP S54101076 A JPS54101076 A JP S54101076A JP 796478 A JP796478 A JP 796478A JP 796478 A JP796478 A JP 796478A JP S54101076 A JPS54101076 A JP S54101076A
Authority
JP
Japan
Prior art keywords
digital data
magnification
terminal
dac
bits
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.)
Granted
Application number
JP796478A
Other languages
Japanese (ja)
Other versions
JPS6360569B2 (en
Inventor
Hiroyuki Ose
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
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP796478A priority Critical patent/JPS54101076A/en
Publication of JPS54101076A publication Critical patent/JPS54101076A/en
Publication of JPS6360569B2 publication Critical patent/JPS6360569B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE: To put out voltage under a condition that the maximum resolution of DAC under use all the time is effective, by automatically varying the optimum magnification and digital data input values being accompanied by the magnification only by digital data input.
CONSTITUTION: Digital data 6 are input to a shift register 7 while using a terminal 12 as the lowest bit terminal and a terminal 15 as the uppermost bit terminal. The low-ranking n bits of the shift register 7 are input to DAC 8, and high-ranking bits are input to a control portion 9. When the number of the effective bits of digital data input values exceeds the bit number of DAC 8, the control portion 9 feeds shift pulse to the shift register 7 so that former bit number be equal to latter bit number and causes 1/2n while transmitting magnification signals to an amplifier 16 and multiplies magnification by 2n.
COPYRIGHT: (C)1979,JPO&Japio
JP796478A 1978-01-26 1978-01-26 Digital program voltage generator Granted JPS54101076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP796478A JPS54101076A (en) 1978-01-26 1978-01-26 Digital program voltage generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP796478A JPS54101076A (en) 1978-01-26 1978-01-26 Digital program voltage generator

Publications (2)

Publication Number Publication Date
JPS54101076A true JPS54101076A (en) 1979-08-09
JPS6360569B2 JPS6360569B2 (en) 1988-11-24

Family

ID=11680145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP796478A Granted JPS54101076A (en) 1978-01-26 1978-01-26 Digital program voltage generator

Country Status (1)

Country Link
JP (1) JPS54101076A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56102118A (en) * 1980-01-21 1981-08-15 Hitachi Ltd Digital to analog converting circuit
JPS56102119A (en) * 1980-01-21 1981-08-15 Hitachi Ltd Analog-to-digital converting circuit
JPS5753144A (en) * 1980-09-16 1982-03-30 Nippon Telegr & Teleph Corp <Ntt> Digital-analogue converter
JPS57145415A (en) * 1981-01-23 1982-09-08 Philips Nv Method and device for altering digital signal
JPS58153418A (en) * 1982-03-08 1983-09-12 Matsushita Electric Ind Co Ltd Floating point analog-digital converter
JPS59104630U (en) * 1982-12-28 1984-07-14 日本電気ホームエレクトロニクス株式会社 D/A converter
JPS60167441U (en) * 1984-04-16 1985-11-07 日本コロムビア株式会社 Digital-analog conversion circuit
JPS6187431A (en) * 1984-10-04 1986-05-02 Nippon Gakki Seizo Kk Digital analog converting circuit
JPS61154320A (en) * 1984-12-27 1986-07-14 Pioneer Electronic Corp Variable device of digital level
JPS61203720A (en) * 1985-03-07 1986-09-09 Pioneer Electronic Corp Digital-analog converter
JPS61242421A (en) * 1985-04-19 1986-10-28 Nippon Gakki Seizo Kk Digital-analog converter
JPS6348919A (en) * 1986-08-19 1988-03-01 Fujitsu Ltd Automatic gain adjustment method using digital signal processing processor
JPS6382130A (en) * 1986-09-26 1988-04-12 Aiwa Co Ltd Digital audio reproducing system
JPS63209209A (en) * 1987-02-25 1988-08-30 Yamaha Corp Digital signal processing circuit
JPH01160117A (en) * 1987-12-16 1989-06-23 Toshiba Corp Shift circuit
WO1991003105A1 (en) * 1989-08-21 1991-03-07 Fujitsu Limited Digital-to-analog converter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513352U (en) * 1974-06-24 1976-01-12
JPS51140464A (en) * 1975-05-30 1976-12-03 Hitachi Ltd Input level automatic control system
JPS52119161A (en) * 1976-03-31 1977-10-06 Toshiba Corp Analog to digital convertor
JPS53140961A (en) * 1977-05-16 1978-12-08 Hitachi Ltd Output method for digital/analog

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513352B2 (en) * 1971-10-04 1976-02-02

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS513352U (en) * 1974-06-24 1976-01-12
JPS51140464A (en) * 1975-05-30 1976-12-03 Hitachi Ltd Input level automatic control system
JPS52119161A (en) * 1976-03-31 1977-10-06 Toshiba Corp Analog to digital convertor
JPS53140961A (en) * 1977-05-16 1978-12-08 Hitachi Ltd Output method for digital/analog

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6333740B2 (en) * 1980-01-21 1988-07-06 Hitachi Ltd
JPS56102119A (en) * 1980-01-21 1981-08-15 Hitachi Ltd Analog-to-digital converting circuit
JPS56102118A (en) * 1980-01-21 1981-08-15 Hitachi Ltd Digital to analog converting circuit
JPS5753144A (en) * 1980-09-16 1982-03-30 Nippon Telegr & Teleph Corp <Ntt> Digital-analogue converter
JPH0116060B2 (en) * 1980-09-16 1989-03-22 Nippon Telegraph & Telephone
JPS57145415A (en) * 1981-01-23 1982-09-08 Philips Nv Method and device for altering digital signal
JPH0445859B2 (en) * 1981-01-23 1992-07-28 Fuiritsupusu Furuuiranpenfuaburiken Nv
JPS58153418A (en) * 1982-03-08 1983-09-12 Matsushita Electric Ind Co Ltd Floating point analog-digital converter
JPS59104630U (en) * 1982-12-28 1984-07-14 日本電気ホームエレクトロニクス株式会社 D/A converter
JPS60167441U (en) * 1984-04-16 1985-11-07 日本コロムビア株式会社 Digital-analog conversion circuit
JPS6187431A (en) * 1984-10-04 1986-05-02 Nippon Gakki Seizo Kk Digital analog converting circuit
JPS61154320A (en) * 1984-12-27 1986-07-14 Pioneer Electronic Corp Variable device of digital level
JPS61203720A (en) * 1985-03-07 1986-09-09 Pioneer Electronic Corp Digital-analog converter
JPS61242421A (en) * 1985-04-19 1986-10-28 Nippon Gakki Seizo Kk Digital-analog converter
JPS6348919A (en) * 1986-08-19 1988-03-01 Fujitsu Ltd Automatic gain adjustment method using digital signal processing processor
JPS6382130A (en) * 1986-09-26 1988-04-12 Aiwa Co Ltd Digital audio reproducing system
JPS63209209A (en) * 1987-02-25 1988-08-30 Yamaha Corp Digital signal processing circuit
JPH01160117A (en) * 1987-12-16 1989-06-23 Toshiba Corp Shift circuit
JPH0423451B2 (en) * 1987-12-16 1992-04-22 Tokyo Shibaura Electric Co
WO1991003105A1 (en) * 1989-08-21 1991-03-07 Fujitsu Limited Digital-to-analog converter
US5307065A (en) * 1989-08-21 1994-04-26 Fujitsu Limited Digital-to-analog converter

Also Published As

Publication number Publication date
JPS6360569B2 (en) 1988-11-24

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