JPS5767324A - Constitution system for floating-point analogue-digital converter - Google Patents

Constitution system for floating-point analogue-digital converter

Info

Publication number
JPS5767324A
JPS5767324A JP14408880A JP14408880A JPS5767324A JP S5767324 A JPS5767324 A JP S5767324A JP 14408880 A JP14408880 A JP 14408880A JP 14408880 A JP14408880 A JP 14408880A JP S5767324 A JPS5767324 A JP S5767324A
Authority
JP
Japan
Prior art keywords
converter
output
floating
digital converter
level
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
JP14408880A
Other languages
Japanese (ja)
Inventor
Gen Date
Kenzo Miura
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14408880A priority Critical patent/JPS5767324A/en
Publication of JPS5767324A publication Critical patent/JPS5767324A/en
Pending 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
    • H03M1/18—Automatic control for modifying the range of signals the converter can handle, e.g. gain ranging

Landscapes

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

Abstract

PURPOSE:To realize a floating-point A/D conversion function without a gain switch in the analogue stage, by selecting another A/D converter by discriminating whether an input is within a normal operation range of not. CONSTITUTION:A momentary level is detected by a level detector 6; an if it is within a normal operation range of an A/D converter 4, the output of the A/D con- verter 4 is selected by a digital signal synthesizer 7. If it exceeds the level range of the A/D converter 4, the output of an A/D converter 3 is selected by the digital signal synthesizer 7. The expontential part is set to zero if the output of the A/D converter 4 is selected, and a proper value of 0 or 1 is substituted in the lower bit of the mantissa, if the output of the A/D converter 3 is selected, thereby obtaining a floating point indication.
JP14408880A 1980-10-14 1980-10-14 Constitution system for floating-point analogue-digital converter Pending JPS5767324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14408880A JPS5767324A (en) 1980-10-14 1980-10-14 Constitution system for floating-point analogue-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14408880A JPS5767324A (en) 1980-10-14 1980-10-14 Constitution system for floating-point analogue-digital converter

Publications (1)

Publication Number Publication Date
JPS5767324A true JPS5767324A (en) 1982-04-23

Family

ID=15353945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14408880A Pending JPS5767324A (en) 1980-10-14 1980-10-14 Constitution system for floating-point analogue-digital converter

Country Status (1)

Country Link
JP (1) JPS5767324A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62178017A (en) * 1986-01-31 1987-08-05 Sony Corp Gain control circuit
JPS6370618A (en) * 1986-09-11 1988-03-30 Shimadzu Corp Analog-digital converter
JPS63174429A (en) * 1987-01-13 1988-07-18 Nec Corp Floating point type analog/digital converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62178017A (en) * 1986-01-31 1987-08-05 Sony Corp Gain control circuit
JPS6370618A (en) * 1986-09-11 1988-03-30 Shimadzu Corp Analog-digital converter
JPS63174429A (en) * 1987-01-13 1988-07-18 Nec Corp Floating point type analog/digital converter

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