JPS568935A - Level compressor for digital signal - Google Patents

Level compressor for digital signal

Info

Publication number
JPS568935A
JPS568935A JP8410579A JP8410579A JPS568935A JP S568935 A JPS568935 A JP S568935A JP 8410579 A JP8410579 A JP 8410579A JP 8410579 A JP8410579 A JP 8410579A JP S568935 A JPS568935 A JP S568935A
Authority
JP
Japan
Prior art keywords
level
digital signal
input
excessive
attenuation
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
JP8410579A
Other languages
Japanese (ja)
Other versions
JPS6346617B2 (en
Inventor
Masao Kasuga
Masaaki Sato
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP8410579A priority Critical patent/JPS568935A/en
Publication of JPS568935A publication Critical patent/JPS568935A/en
Publication of JPS6346617B2 publication Critical patent/JPS6346617B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G7/00—Volume compression or expansion in amplifiers
    • H03G7/007—Volume compression or expansion in amplifiers of digital or coded signals

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE:To remove nonlinear distortion based upon an excessive input by level- compressing a digital signal in case that a digitized code pattern of not less than a fixed level is input. CONSTITUTION:A code pattern of a digital signal arriving from input terminal 1 is supervised by peak detecting circuit 3 and level detecting circuit 6 and when a digital level of not less than a maximum level that the device can process arrives, attenuation characteristics are provided to multiplier 9 in accordance with the value of the excessive level. The attenuation characteristics are given by coefficient unit 8 composed of ROM in accordance with the excessive level. Then, the input digital signal is delayed by delay circuit 2 by the time that the circuit requires for attenuation and since the attenuation is carrier out by fixed time-constant circuit 4, the excessive input signal can smoothly be attenuated, so that an overflow can be prevented.
JP8410579A 1979-07-03 1979-07-03 Level compressor for digital signal Granted JPS568935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8410579A JPS568935A (en) 1979-07-03 1979-07-03 Level compressor for digital signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8410579A JPS568935A (en) 1979-07-03 1979-07-03 Level compressor for digital signal

Publications (2)

Publication Number Publication Date
JPS568935A true JPS568935A (en) 1981-01-29
JPS6346617B2 JPS6346617B2 (en) 1988-09-16

Family

ID=13821235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8410579A Granted JPS568935A (en) 1979-07-03 1979-07-03 Level compressor for digital signal

Country Status (1)

Country Link
JP (1) JPS568935A (en)

Also Published As

Publication number Publication date
JPS6346617B2 (en) 1988-09-16

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