JPS6465919A - Non-linear emphasis circuit - Google Patents

Non-linear emphasis circuit

Info

Publication number
JPS6465919A
JPS6465919A JP62221593A JP22159387A JPS6465919A JP S6465919 A JPS6465919 A JP S6465919A JP 62221593 A JP62221593 A JP 62221593A JP 22159387 A JP22159387 A JP 22159387A JP S6465919 A JPS6465919 A JP S6465919A
Authority
JP
Japan
Prior art keywords
input level
emphasis
control part
adaptive
emphasis characteristic
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
JP62221593A
Other languages
Japanese (ja)
Inventor
Kazuhiro Kitamura
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP62221593A priority Critical patent/JPS6465919A/en
Publication of JPS6465919A publication Critical patent/JPS6465919A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To simplify circuit constitution, and at the same time, to automatically select a necessary emphasis characteristic by constituting a non-linear emphasis circuit of an input level detector and an adaptive digital filter, constituted so that its emphasis characteristic is controlled according to a detected level. CONSTITUTION:The detected output of a prescribed number of bits outputted from the input level detector 8 is supplied as the address of a coefficient control part 30. The digital filter 10 is constituted so as to be adaptive, and in its coefficient control part 30, coefficient data for obtaining plural transfer functions are stored so that the emphasis characteristics of plural kinds corresponding to the input level can be automatically selected. Then, the particular coefficients are supplied to respective multipliers 3A-3N from the coefficient control part 30, so that the emphasis characteristic EA is selected for the lowest input level A, and the emphasis characteristic EH is selected for the highest input level H. Thus, the adaptive emphasis circuit, whose emphasis characteristic varies in company with the change of the input level, in other words, the transition of time, is obtained.
JP62221593A 1987-09-04 1987-09-04 Non-linear emphasis circuit Pending JPS6465919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62221593A JPS6465919A (en) 1987-09-04 1987-09-04 Non-linear emphasis circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62221593A JPS6465919A (en) 1987-09-04 1987-09-04 Non-linear emphasis circuit

Publications (1)

Publication Number Publication Date
JPS6465919A true JPS6465919A (en) 1989-03-13

Family

ID=16769187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62221593A Pending JPS6465919A (en) 1987-09-04 1987-09-04 Non-linear emphasis circuit

Country Status (1)

Country Link
JP (1) JPS6465919A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04262689A (en) * 1991-02-18 1992-09-18 Matsushita Electric Ind Co Ltd Nonlinear signal processor
JPH04262690A (en) * 1991-02-18 1992-09-18 Matsushita Electric Ind Co Ltd Nonlinear signal processor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04262689A (en) * 1991-02-18 1992-09-18 Matsushita Electric Ind Co Ltd Nonlinear signal processor
JPH04262690A (en) * 1991-02-18 1992-09-18 Matsushita Electric Ind Co Ltd Nonlinear signal processor

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