JPS5762624A - Analogue input data gathering device - Google Patents

Analogue input data gathering device

Info

Publication number
JPS5762624A
JPS5762624A JP13706480A JP13706480A JPS5762624A JP S5762624 A JPS5762624 A JP S5762624A JP 13706480 A JP13706480 A JP 13706480A JP 13706480 A JP13706480 A JP 13706480A JP S5762624 A JPS5762624 A JP S5762624A
Authority
JP
Japan
Prior art keywords
input
switch
converter
analogue
unipolar
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
JP13706480A
Other languages
Japanese (ja)
Inventor
Yasuo Shimada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13706480A priority Critical patent/JPS5762624A/en
Publication of JPS5762624A publication Critical patent/JPS5762624A/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 improve a precision even for a unipolar input, by superposing the half of a voltage corresponding to the full scale of the unipolar analogue signal onto the input voltage and reducing the A/D conversion gain to the half when a bipolar analogue signal input is selected. CONSTITUTION:In case of a unipolar input, an analogue switch 21 is switched to the U side, and an analogue switch 22 is turned off. When the input is subjected to D/A conversion under this state, a D/A converter 13 is 0V and an output register 19 is 00-00 when the input is 0V. The converter 13 is V/2 and the register is 10-0 when the input is V/2, and the converter 13 is V and the register 19 is 11- 11 when the input is V. In case of a bipolar input, the switch 21 is switched to the B side, and the switch 22 is turned on. Consequently, the conversion gain becomes V/2, and V/2 is offset.
JP13706480A 1980-10-01 1980-10-01 Analogue input data gathering device Pending JPS5762624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13706480A JPS5762624A (en) 1980-10-01 1980-10-01 Analogue input data gathering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13706480A JPS5762624A (en) 1980-10-01 1980-10-01 Analogue input data gathering device

Publications (1)

Publication Number Publication Date
JPS5762624A true JPS5762624A (en) 1982-04-15

Family

ID=15190041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13706480A Pending JPS5762624A (en) 1980-10-01 1980-10-01 Analogue input data gathering device

Country Status (1)

Country Link
JP (1) JPS5762624A (en)

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