JPS5474350A - Compressor circuit - Google Patents

Compressor circuit

Info

Publication number
JPS5474350A
JPS5474350A JP14133077A JP14133077A JPS5474350A JP S5474350 A JPS5474350 A JP S5474350A JP 14133077 A JP14133077 A JP 14133077A JP 14133077 A JP14133077 A JP 14133077A JP S5474350 A JPS5474350 A JP S5474350A
Authority
JP
Japan
Prior art keywords
level
comparison
threshold
error
comparator
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
JP14133077A
Other languages
Japanese (ja)
Inventor
Masaaki Kato
Keiji Takeuchi
Seishi Kageyama
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 JP14133077A priority Critical patent/JPS5474350A/en
Publication of JPS5474350A publication Critical patent/JPS5474350A/en
Pending legal-status Critical Current

Links

Landscapes

  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE: To eliminate the malfunction due to threshold-level precision, by setting low the comparison level of a comparator which compares the output of a sample holding circuit with a plural number of comparison reference levels preset.
CONSTITUTION: The output of sample holding circuit 1 is inputted to amplifiers 2, 3 and 4 respectively, where it is amplified at fixed amplification degrees. Their outputs are inputted to the multiplexer, where they are selected in an alternative way and outputted for A/D conversion 7. When the threshold level (comparsion reference level) of comparator 6 is set lower than the desired threshold level by nearly half the maximum decision error, the decision level will not exceeds the desired level even if the threshold level becomes higher due to the error in comparison with the reference level, thereby making it possible to prevent the quantization error.
COPYRIGHT: (C)1979,JPO&Japio
JP14133077A 1977-11-25 1977-11-25 Compressor circuit Pending JPS5474350A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14133077A JPS5474350A (en) 1977-11-25 1977-11-25 Compressor circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14133077A JPS5474350A (en) 1977-11-25 1977-11-25 Compressor circuit

Publications (1)

Publication Number Publication Date
JPS5474350A true JPS5474350A (en) 1979-06-14

Family

ID=15289426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14133077A Pending JPS5474350A (en) 1977-11-25 1977-11-25 Compressor circuit

Country Status (1)

Country Link
JP (1) JPS5474350A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56156054A (en) * 1980-05-06 1981-12-02 Nec Corp Variable arithmetic system
JPS57129549A (en) * 1981-02-04 1982-08-11 Sony Corp Signal transmission system
JPH03195283A (en) * 1989-12-25 1991-08-26 Fujitsu General Ltd Data decode circuit having nonlinear characteristic

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56156054A (en) * 1980-05-06 1981-12-02 Nec Corp Variable arithmetic system
JPH0132695B2 (en) * 1980-05-06 1989-07-10 Nippon Electric Co
JPS57129549A (en) * 1981-02-04 1982-08-11 Sony Corp Signal transmission system
JPH03195283A (en) * 1989-12-25 1991-08-26 Fujitsu General Ltd Data decode circuit having nonlinear characteristic

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