JPS5656076A - Reproduced signal compensation circuit of recording disk reproducing device - Google Patents

Reproduced signal compensation circuit of recording disk reproducing device

Info

Publication number
JPS5656076A
JPS5656076A JP13149479A JP13149479A JPS5656076A JP S5656076 A JPS5656076 A JP S5656076A JP 13149479 A JP13149479 A JP 13149479A JP 13149479 A JP13149479 A JP 13149479A JP S5656076 A JPS5656076 A JP S5656076A
Authority
JP
Japan
Prior art keywords
level
disk
signal
reproduced
outer circumferences
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
JP13149479A
Other languages
Japanese (ja)
Other versions
JPS6252994B2 (en
Inventor
Minoru Kosake
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.)
Pioneer Video Corp
Universal Pioneer Corp
Original Assignee
Pioneer Video Corp
Universal Pioneer 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 Pioneer Video Corp, Universal Pioneer Corp filed Critical Pioneer Video Corp
Priority to JP13149479A priority Critical patent/JPS5656076A/en
Priority to US06/196,148 priority patent/US4340950A/en
Priority to DE19803038650 priority patent/DE3038650C2/en
Priority to GB8032959A priority patent/GB2061072B/en
Publication of JPS5656076A publication Critical patent/JPS5656076A/en
Priority to GB08318878A priority patent/GB2134356B/en
Publication of JPS6252994B2 publication Critical patent/JPS6252994B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To make it possible to compensate accurately the difference in the high frequency component of a reproduced RF signal between the inner and outer circumferences of a disk without any influence of the reflectivity of the disk, by providing an automatic gain control circuit and equalizer circuit. CONSTITUTION:Since the frequency of sound information in a reproduced RF signal is relatively low, the sound information is equal in level at the inner and outer circumferences of a disk, so that the reproduced RF signal level is functioned with automatic gain control AGC8 according to the sound information signal level. Thus, fluctuation of the RF signal level due to a change in the reflectivity of the disk, fluctuations of a pickup laser output, etc., can be removed. Therefore, level fluctuations due to the above-mentioned cause, etc., are suppressed and the information signal is inputted to equalizer circuit 12, and consequently a high frequency level difference between the inner and outer circumferences of the disk can be compensated by controlling equalizer characteristics of equalizer circuit 12 accoding to only the level of the video information signal.
JP13149479A 1979-10-12 1979-10-12 Reproduced signal compensation circuit of recording disk reproducing device Granted JPS5656076A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP13149479A JPS5656076A (en) 1979-10-12 1979-10-12 Reproduced signal compensation circuit of recording disk reproducing device
US06/196,148 US4340950A (en) 1979-10-12 1980-10-10 Video disc player
DE19803038650 DE3038650C2 (en) 1979-10-12 1980-10-13 Apparatus for reproducing information read from a video disc
GB8032959A GB2061072B (en) 1979-10-12 1980-10-13 Video disc player
GB08318878A GB2134356B (en) 1979-10-12 1983-07-13 Video disc player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13149479A JPS5656076A (en) 1979-10-12 1979-10-12 Reproduced signal compensation circuit of recording disk reproducing device

Publications (2)

Publication Number Publication Date
JPS5656076A true JPS5656076A (en) 1981-05-16
JPS6252994B2 JPS6252994B2 (en) 1987-11-09

Family

ID=15059304

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13149479A Granted JPS5656076A (en) 1979-10-12 1979-10-12 Reproduced signal compensation circuit of recording disk reproducing device

Country Status (1)

Country Link
JP (1) JPS5656076A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62248108A (en) * 1986-04-22 1987-10-29 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS6359287A (en) * 1986-08-29 1988-03-15 Toshiba Corp Video tape recorder
JPH03152763A (en) * 1989-11-09 1991-06-28 Matsushita Electric Ind Co Ltd Fm signal reproducing device
JPH0714196A (en) * 1990-04-20 1995-01-17 Internatl Business Mach Corp <Ibm> Method and apparatus for reducing amplitude change of optical-disk read signal

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5361912A (en) * 1976-11-15 1978-06-02 Sanyo Electric Co Ltd Radial correction system for video disc player

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5361912A (en) * 1976-11-15 1978-06-02 Sanyo Electric Co Ltd Radial correction system for video disc player

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62248108A (en) * 1986-04-22 1987-10-29 Matsushita Electric Ind Co Ltd Magnetic recording and reproducing device
JPS6359287A (en) * 1986-08-29 1988-03-15 Toshiba Corp Video tape recorder
JPH03152763A (en) * 1989-11-09 1991-06-28 Matsushita Electric Ind Co Ltd Fm signal reproducing device
JPH0714196A (en) * 1990-04-20 1995-01-17 Internatl Business Mach Corp <Ibm> Method and apparatus for reducing amplitude change of optical-disk read signal

Also Published As

Publication number Publication date
JPS6252994B2 (en) 1987-11-09

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