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JPS5646379A - Information reproducing device - Google Patents

Information reproducing device

Info

Publication number
JPS5646379A
JPS5646379A JP12176679A JP12176679A JPS5646379A JP S5646379 A JPS5646379 A JP S5646379A JP 12176679 A JP12176679 A JP 12176679A JP 12176679 A JP12176679 A JP 12176679A JP S5646379 A JPS5646379 A JP S5646379A
Authority
JP
Japan
Prior art keywords
disc
signal
scanning
recording
information
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
JP12176679A
Other languages
Japanese (ja)
Inventor
Yoshihiro Uchiumi
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.)
Teac Corp
Original Assignee
Teac 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 Teac Corp filed Critical Teac Corp
Priority to JP12176679A priority Critical patent/JPS5646379A/en
Publication of JPS5646379A publication Critical patent/JPS5646379A/en
Pending 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)
  • Optical Recording Or Reproduction (AREA)
  • Television Signal Processing For Recording (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)

Abstract

PURPOSE:To double the amount of recording of information without lowering the quality of reproduced picture, by picking up the signal of one field during scanning of one frame with the switch circuit and mixing and outputting this signal with the signal delayed by unit field scanning time. CONSTITUTION:The disc 1 of disc player is turned in a given speed with the disc motor 3, the beam 5 is projected from the information read-in head 4 on the disc 1 and it is radially fed on the disc with the feed drive 6, and the recorded information is read in by scanning the disc 1 with the beam 5 in spiral. Further, the recording track is in beam scanning with the reproduction beam 5 from the beam converging objective lens 12 to obtain the modulation reflecting beam 13. This beam is converted into electric signal with the reproducing optical detector 14 and fed to the demodulation circuit 16. Further, the reflection lights 17a, 18a of the tracking beams 17, 18 are picked up at the switch circuit 32, this signal is mixed with the signal delaying by unit field scanning time at the mixing circuit 33, and amount of recording can be doubled without lowering the quality of reproduced picture.
JP12176679A 1979-09-21 1979-09-21 Information reproducing device Pending JPS5646379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12176679A JPS5646379A (en) 1979-09-21 1979-09-21 Information reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12176679A JPS5646379A (en) 1979-09-21 1979-09-21 Information reproducing device

Publications (1)

Publication Number Publication Date
JPS5646379A true JPS5646379A (en) 1981-04-27

Family

ID=14819348

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12176679A Pending JPS5646379A (en) 1979-09-21 1979-09-21 Information reproducing device

Country Status (1)

Country Link
JP (1) JPS5646379A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4984121A (en) * 1972-12-15 1974-08-13
JPS5122042A (en) * 1974-08-20 1976-02-21 Kawamura Denki Sangyo RODEN SHADANKI
JPS5122402A (en) * 1974-08-17 1976-02-23 Teac Corp
JPS53111229A (en) * 1977-03-09 1978-09-28 Matsushita Electric Ind Co Ltd Recording regenerative device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4984121A (en) * 1972-12-15 1974-08-13
JPS5122402A (en) * 1974-08-17 1976-02-23 Teac Corp
JPS5122042A (en) * 1974-08-20 1976-02-21 Kawamura Denki Sangyo RODEN SHADANKI
JPS53111229A (en) * 1977-03-09 1978-09-28 Matsushita Electric Ind Co Ltd Recording regenerative device

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