JPS6481402A - Signal processor - Google Patents

Signal processor

Info

Publication number
JPS6481402A
JPS6481402A JP62239470A JP23947087A JPS6481402A JP S6481402 A JPS6481402 A JP S6481402A JP 62239470 A JP62239470 A JP 62239470A JP 23947087 A JP23947087 A JP 23947087A JP S6481402 A JPS6481402 A JP S6481402A
Authority
JP
Japan
Prior art keywords
signal
feedback signal
plural
different compression
compression characteristics
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
JP62239470A
Other languages
Japanese (ja)
Inventor
Motoaki Kawasaki
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP62239470A priority Critical patent/JPS6481402A/en
Publication of JPS6481402A publication Critical patent/JPS6481402A/en
Priority to US07/666,459 priority patent/US5097336A/en
Pending legal-status Critical Current

Links

Landscapes

  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To restore a stable signal by generating a feedback signal by using plural kinds of signals obtained by plural compressing means which have different compression characteristics and restoring an original signal by using a received signal and the feedback signal. CONSTITUTION:When compressing circuits 21a and 21b which have mutually different compression characteristics are used, high-frequency component signals outputted by the compressing circuits 21a and 21b after nonlinear processing differ in level because of the different compression characteristics even if high- frequency component signals supplied from high-pass filters HPF22a and HPF22b contain similar random noises unless the levels of the random noises are large. The feedback signal is formed by using the plural kinds of signals obtained by the plural compressing means 21a and 21b and the original signal is restored by using the received signal and feedback signal. Consequently, the influence of noise components generated in transmission and reception is reduced and the original signal can be restored by the received signal more accurately.
JP62239470A 1987-09-22 1987-09-22 Signal processor Pending JPS6481402A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62239470A JPS6481402A (en) 1987-09-22 1987-09-22 Signal processor
US07/666,459 US5097336A (en) 1987-09-22 1991-03-05 Signal processing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62239470A JPS6481402A (en) 1987-09-22 1987-09-22 Signal processor

Publications (1)

Publication Number Publication Date
JPS6481402A true JPS6481402A (en) 1989-03-27

Family

ID=17045247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62239470A Pending JPS6481402A (en) 1987-09-22 1987-09-22 Signal processor

Country Status (1)

Country Link
JP (1) JPS6481402A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55142404A (en) * 1979-04-23 1980-11-07 Nippon Columbia Co Ltd Extender for dynamic range
JPS55158715A (en) * 1979-05-29 1980-12-10 Sony Corp Gain control circuit
JPS586613A (en) * 1981-07-06 1983-01-14 Pioneer Electronic Corp Noise reduction common-use circuit
JPS5880107A (en) * 1981-11-04 1983-05-14 Hitachi Ltd magnetic recording device
JPS6265523A (en) * 1985-09-17 1987-03-24 Matsushita Electric Ind Co Ltd nonlinear device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55142404A (en) * 1979-04-23 1980-11-07 Nippon Columbia Co Ltd Extender for dynamic range
JPS55158715A (en) * 1979-05-29 1980-12-10 Sony Corp Gain control circuit
JPS586613A (en) * 1981-07-06 1983-01-14 Pioneer Electronic Corp Noise reduction common-use circuit
JPS5880107A (en) * 1981-11-04 1983-05-14 Hitachi Ltd magnetic recording device
JPS6265523A (en) * 1985-09-17 1987-03-24 Matsushita Electric Ind Co Ltd nonlinear device

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