JPS5698917A - Automatic level set circuit - Google Patents

Automatic level set circuit

Info

Publication number
JPS5698917A
JPS5698917A JP240380A JP240380A JPS5698917A JP S5698917 A JPS5698917 A JP S5698917A JP 240380 A JP240380 A JP 240380A JP 240380 A JP240380 A JP 240380A JP S5698917 A JPS5698917 A JP S5698917A
Authority
JP
Japan
Prior art keywords
amplification factor
circuit
automatic level
output
analog signal
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
JP240380A
Other languages
Japanese (ja)
Other versions
JPS6161569B2 (en
Inventor
Satoshi Endo
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 JP240380A priority Critical patent/JPS5698917A/en
Publication of JPS5698917A publication Critical patent/JPS5698917A/en
Publication of JPS6161569B2 publication Critical patent/JPS6161569B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/001—Digital control of analog signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices

Landscapes

  • Control Of Amplification And Gain Control (AREA)

Abstract

PURPOSE:To enable automatic level adjustment, by setting the amplification factor of a variable amplification factor type amplifier according to the peak value of an input analog signal to an A/D converter. CONSTITUTION:The maximum peak value of an input analog signal Si is held at a peak hold circuit 1. This maximum peak value is converted into a digital value with an A/D converter 2. This digital signal is held at a latch circuit 3 and the output of this circuit 3 sets the amplification factor of the variable amplification type amplifier. This amplifier 4 amplifies the signal Si. In this case, the output analog signal So output at the post stage sets the amplification factor of the amplifier 4 so that it is equal to the maximum level effective to the characteristics of the poststage circuit. Thus, automatic level adjustment can be made.
JP240380A 1980-01-11 1980-01-11 Automatic level set circuit Granted JPS5698917A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP240380A JPS5698917A (en) 1980-01-11 1980-01-11 Automatic level set circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP240380A JPS5698917A (en) 1980-01-11 1980-01-11 Automatic level set circuit

Publications (2)

Publication Number Publication Date
JPS5698917A true JPS5698917A (en) 1981-08-08
JPS6161569B2 JPS6161569B2 (en) 1986-12-26

Family

ID=11528268

Family Applications (1)

Application Number Title Priority Date Filing Date
JP240380A Granted JPS5698917A (en) 1980-01-11 1980-01-11 Automatic level set circuit

Country Status (1)

Country Link
JP (1) JPS5698917A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120156A (en) * 1975-04-14 1976-10-21 Toshiba Corp Agc circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51120156A (en) * 1975-04-14 1976-10-21 Toshiba Corp Agc circuit

Also Published As

Publication number Publication date
JPS6161569B2 (en) 1986-12-26

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