JPS57111123A - Signal processing circuit - Google Patents

Signal processing circuit

Info

Publication number
JPS57111123A
JPS57111123A JP12721281A JP12721281A JPS57111123A JP S57111123 A JPS57111123 A JP S57111123A JP 12721281 A JP12721281 A JP 12721281A JP 12721281 A JP12721281 A JP 12721281A JP S57111123 A JPS57111123 A JP S57111123A
Authority
JP
Japan
Prior art keywords
converter
supplied
value
attenuator
analog input
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
JP12721281A
Other languages
Japanese (ja)
Other versions
JPS5941324B2 (en
Inventor
Jiyun Takayama
Takenori Sonoda
Shoichi Nakamura
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP12721281A priority Critical patent/JPS5941324B2/en
Publication of JPS57111123A publication Critical patent/JPS57111123A/en
Publication of JPS5941324B2 publication Critical patent/JPS5941324B2/en
Expired 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 expand a dynamic range, by detecting that a digital signal has become a prescribed value, increasing a conversion characteristic of a value of an analog signal againt a value of a digital signal, and returning the conversion characteristic to its original state after a prescribed time has elapsed. CONSTITUTION:A transmission side variable attenuator 2 is provided on the input side of an A/D converter. When an analog input signal supplied to the A/D converter 4 exceeds full-scale voltage of the A/D converter 4, the attenuation quantity of the attenuator 2 is switched by a controlling circuit 5, and by this switching, the analog input sigal supplied to the A/D converter 2 is attenuated to about 1/2. Subsequently, after a prescribed time has passed, the attenuation quantity of the attenuator 2 is switched automatically, and by this switching, the analog input signal is not attenuated to aboug 1/2 but is supplied to the A/D converter in its oriinal attenuation state.
JP12721281A 1981-08-13 1981-08-13 signal processing device Expired JPS5941324B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12721281A JPS5941324B2 (en) 1981-08-13 1981-08-13 signal processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12721281A JPS5941324B2 (en) 1981-08-13 1981-08-13 signal processing device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP48076392A Division JPS5753698B2 (en) 1973-06-21 1973-07-06

Publications (2)

Publication Number Publication Date
JPS57111123A true JPS57111123A (en) 1982-07-10
JPS5941324B2 JPS5941324B2 (en) 1984-10-06

Family

ID=14954492

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12721281A Expired JPS5941324B2 (en) 1981-08-13 1981-08-13 signal processing device

Country Status (1)

Country Link
JP (1) JPS5941324B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01222522A (en) * 1988-03-01 1989-09-05 Pioneer Electron Corp Digital analog conversion circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01222522A (en) * 1988-03-01 1989-09-05 Pioneer Electron Corp Digital analog conversion circuit

Also Published As

Publication number Publication date
JPS5941324B2 (en) 1984-10-06

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