JPS5792919A - Code converter - Google Patents

Code converter

Info

Publication number
JPS5792919A
JPS5792919A JP16849380A JP16849380A JPS5792919A JP S5792919 A JPS5792919 A JP S5792919A JP 16849380 A JP16849380 A JP 16849380A JP 16849380 A JP16849380 A JP 16849380A JP S5792919 A JPS5792919 A JP S5792919A
Authority
JP
Japan
Prior art keywords
resistances
bit
switches
constitution
register string
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
JP16849380A
Other languages
Japanese (ja)
Other versions
JPS628051B2 (en
Inventor
Hirohisa Karibe
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16849380A priority Critical patent/JPS5792919A/en
Publication of JPS5792919A publication Critical patent/JPS5792919A/en
Publication of JPS628051B2 publication Critical patent/JPS628051B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To enhance the conversion precision, by making it possible to connect resistances of the same resistance value to resistances in both ends of a register string part. CONSTITUTION:An A/D converter of a mu-law companding rule consists of a segment generating part SGC, a register string part RS, a comparator COM, and a logical control circuit SAR. Resistances of the same value as resistances in both ends of the register string part RS are connected through switches S21 and S22 in parallel to these resistances in both ends. If the precision is not sufficient in the mu-law companding rule of the 8-bit constitution and a modified mu-law companding rule of a 9-bit constitution is used, switches S21 and S22 are turned off and on respectively up to the fourth bit of the step, and switches S21 and S22 are turned on and off respectively for determination of the fifth bit to shift output levels in switches SR1-SR17 by the half bit.
JP16849380A 1980-11-29 1980-11-29 Code converter Granted JPS5792919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16849380A JPS5792919A (en) 1980-11-29 1980-11-29 Code converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16849380A JPS5792919A (en) 1980-11-29 1980-11-29 Code converter

Publications (2)

Publication Number Publication Date
JPS5792919A true JPS5792919A (en) 1982-06-09
JPS628051B2 JPS628051B2 (en) 1987-02-20

Family

ID=15869105

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16849380A Granted JPS5792919A (en) 1980-11-29 1980-11-29 Code converter

Country Status (1)

Country Link
JP (1) JPS5792919A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261221A (en) * 1984-06-08 1985-12-24 Nec Corp Analog digital convertor
JPS6439830A (en) * 1987-08-05 1989-02-10 Toshiba Corp A/d converter
EP3672076A1 (en) * 2018-12-21 2020-06-24 Socionext Inc. Voltage-divider circuits and circuitry

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55130228A (en) * 1979-03-30 1980-10-08 Fujitsu Ltd Step generator
JPS55130227A (en) * 1979-03-29 1980-10-08 Fujitsu Ltd Voltage division circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55130227A (en) * 1979-03-29 1980-10-08 Fujitsu Ltd Voltage division circuit
JPS55130228A (en) * 1979-03-30 1980-10-08 Fujitsu Ltd Step generator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60261221A (en) * 1984-06-08 1985-12-24 Nec Corp Analog digital convertor
JPS6439830A (en) * 1987-08-05 1989-02-10 Toshiba Corp A/d converter
EP3672076A1 (en) * 2018-12-21 2020-06-24 Socionext Inc. Voltage-divider circuits and circuitry
US11574751B2 (en) 2018-12-21 2023-02-07 Socionext Inc. Voltage-divider circuits and circuitry

Also Published As

Publication number Publication date
JPS628051B2 (en) 1987-02-20

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