JPS56128021A - Analog-digital converter - Google Patents

Analog-digital converter

Info

Publication number
JPS56128021A
JPS56128021A JP3141780A JP3141780A JPS56128021A JP S56128021 A JPS56128021 A JP S56128021A JP 3141780 A JP3141780 A JP 3141780A JP 3141780 A JP3141780 A JP 3141780A JP S56128021 A JPS56128021 A JP S56128021A
Authority
JP
Japan
Prior art keywords
circuit
signal
input terminal
pulse
terminal
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
JP3141780A
Other languages
Japanese (ja)
Inventor
Kenji Hashi
Ichiji Munesawa
Hideo Akiyama
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 JP3141780A priority Critical patent/JPS56128021A/en
Publication of JPS56128021A publication Critical patent/JPS56128021A/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
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
    • H03M1/0604—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic at one point, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
    • H03M1/0854—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of quantisation noise
    • 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

Landscapes

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

Abstract

PURPOSE:To lessen an error of a quantization step and reduce a quantizing noise, even in case of a small amplitude signal, by providing a direct current portion addition means on the prestage or the poststage of a sampling hold circuit. CONSTITUTION:A sound signal which has been provided to the terminal 1 is sampled, being based on a sampling pulse provided to the sampling pulse input terminal 3, in the sampling hold circuit 2, and it is held to a constant value. An output signal of the circuit 2, and voltage supplied from the DC input terminal 5 are added by the adder circuit 4, and are provided to the A/D converting circuit 6. In this circuit 6, an input signal is quantized in accordance with a pulse from the start convert pulse input terminal 7, and a digital output signal is sent out to the output terminal 8.
JP3141780A 1980-03-11 1980-03-11 Analog-digital converter Pending JPS56128021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3141780A JPS56128021A (en) 1980-03-11 1980-03-11 Analog-digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3141780A JPS56128021A (en) 1980-03-11 1980-03-11 Analog-digital converter

Publications (1)

Publication Number Publication Date
JPS56128021A true JPS56128021A (en) 1981-10-07

Family

ID=12330677

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3141780A Pending JPS56128021A (en) 1980-03-11 1980-03-11 Analog-digital converter

Country Status (1)

Country Link
JP (1) JPS56128021A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441061A (en) * 1977-09-08 1979-03-31 Sony Corp Analogue/digital converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5441061A (en) * 1977-09-08 1979-03-31 Sony Corp Analogue/digital converter

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