JPS6424619A - Equalizing circuit - Google Patents

Equalizing circuit

Info

Publication number
JPS6424619A
JPS6424619A JP18204487A JP18204487A JPS6424619A JP S6424619 A JPS6424619 A JP S6424619A JP 18204487 A JP18204487 A JP 18204487A JP 18204487 A JP18204487 A JP 18204487A JP S6424619 A JPS6424619 A JP S6424619A
Authority
JP
Japan
Prior art keywords
pass filter
low pass
output signal
equalizing circuit
waveform
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
JP18204487A
Other languages
Japanese (ja)
Inventor
Masahiro Shimauji
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.)
NEC Corp
Original Assignee
NEC 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 NEC Corp filed Critical NEC Corp
Priority to JP18204487A priority Critical patent/JPS6424619A/en
Publication of JPS6424619A publication Critical patent/JPS6424619A/en
Pending legal-status Critical Current

Links

Landscapes

  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

PURPOSE:To improve the negative peak of an isolated wave of a thin film head by constituting the titled circuit by a delay means delaying an input signal by a prescribed time and perfectly reflecting the signal at an output terminal, a cosine equalizing circuit, a matching means of the delay means, a low pass filter means, and an addition means adding an output signal of the low pass filter means and an output signal of the cosine equalizing circuit. CONSTITUTION:The delay times t1, t3 of delay lines 1, 3 and a delay time td of the low pass filter 9 are set as shown in the following equation. Thus, the peak of an output signal S6 of the low pass filter 9 is set to a similar position as a negative peak of an output signal S5 of a cosine equalizing circuit 11; t1=(ta+tb)/2, t2=td. A half value width of the output signal S6 of the low pass filter 9 is approximated to a half value width of negative peaks (a), (b) of the waveform S0 by setting the constant such as the cut-off frequency of the low pass filter 9 properly. Then the waveform S6 and the output signal S5 of the cosine equalizing circuit 11 are added by an adder 10 to eliminate most of the negative peaks (a), (b) in the waveform S0 thereby forming a waveform S7 where the half value width of the isolated wave is thin.
JP18204487A 1987-07-21 1987-07-21 Equalizing circuit Pending JPS6424619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18204487A JPS6424619A (en) 1987-07-21 1987-07-21 Equalizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18204487A JPS6424619A (en) 1987-07-21 1987-07-21 Equalizing circuit

Publications (1)

Publication Number Publication Date
JPS6424619A true JPS6424619A (en) 1989-01-26

Family

ID=16111359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18204487A Pending JPS6424619A (en) 1987-07-21 1987-07-21 Equalizing circuit

Country Status (1)

Country Link
JP (1) JPS6424619A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04229223A (en) * 1990-12-27 1992-08-18 Sanyo Kokusaku Pulp Co Ltd Polystyrene resin foam sheet and its manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04229223A (en) * 1990-12-27 1992-08-18 Sanyo Kokusaku Pulp Co Ltd Polystyrene resin foam sheet and its manufacture

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