JPS5250701A - Optical signal reproduction device - Google Patents

Optical signal reproduction device

Info

Publication number
JPS5250701A
JPS5250701A JP12703275A JP12703275A JPS5250701A JP S5250701 A JPS5250701 A JP S5250701A JP 12703275 A JP12703275 A JP 12703275A JP 12703275 A JP12703275 A JP 12703275A JP S5250701 A JPS5250701 A JP S5250701A
Authority
JP
Japan
Prior art keywords
optical signal
reproduction device
signal reproduction
light
undulations
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
JP12703275A
Other languages
Japanese (ja)
Other versions
JPS541162B2 (en
Inventor
Akira Ishii
Fumio Kishino
Kingo Yamagishi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12703275A priority Critical patent/JPS5250701A/en
Priority to US05/693,778 priority patent/US4125860A/en
Priority to GB23887/76A priority patent/GB1520595A/en
Priority to FR7618068A priority patent/FR2315140A1/en
Priority to NLAANVRAGE7606434,A priority patent/NL182256C/en
Priority to DE2627079A priority patent/DE2627079B2/en
Publication of JPS5250701A publication Critical patent/JPS5250701A/en
Publication of JPS541162B2 publication Critical patent/JPS541162B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE: To radiate a medium recorded therein with modulated wave signals as changes in refractive index, undulations of a surface, rate of transmission, etc. with laser light, and emit beat signals with non-diffractive light as reference light, thereby making possible the recording and reproduction of high density information.
COPYRIGHT: (C)1977,JPO&Japio
JP12703275A 1975-06-16 1975-10-22 Optical signal reproduction device Granted JPS5250701A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP12703275A JPS5250701A (en) 1975-10-22 1975-10-22 Optical signal reproduction device
US05/693,778 US4125860A (en) 1975-06-16 1976-06-08 Reproducer for an eraseable videodisc
GB23887/76A GB1520595A (en) 1975-06-16 1976-06-09 Apparatus for reproducing information from a light-responsive storage medium
FR7618068A FR2315140A1 (en) 1975-06-16 1976-06-15 APPARATUS FOR OPTICALLY REPRODUCING INFORMATION PRESENTED ON AN INFORMATION STORAGE MEDIA
NLAANVRAGE7606434,A NL182256C (en) 1975-06-16 1976-06-15 DEVICE FOR REPRODUCING ELECTRICAL SIGNALS USED USING A CARRIER MODULATION METHOD ON A MOVING RECORDING MEDIA.
DE2627079A DE2627079B2 (en) 1975-06-16 1976-06-16 Device for reproducing electrical signals recorded on a moving recording medium as an optical phase change using the carrier modulation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12703275A JPS5250701A (en) 1975-10-22 1975-10-22 Optical signal reproduction device

Publications (2)

Publication Number Publication Date
JPS5250701A true JPS5250701A (en) 1977-04-23
JPS541162B2 JPS541162B2 (en) 1979-01-22

Family

ID=14949967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12703275A Granted JPS5250701A (en) 1975-06-16 1975-10-22 Optical signal reproduction device

Country Status (1)

Country Link
JP (1) JPS5250701A (en)

Also Published As

Publication number Publication date
JPS541162B2 (en) 1979-01-22

Similar Documents

Publication Publication Date Title
AU532212B2 (en) Optical recording medium
JPS648514A (en) Method and device for reproducing optical information and optical information recording medium
JPS5266405A (en) Optical recording system of information recording discs
AU511031B2 (en) Ablative optical recording medium
JPS647327A (en) Method and apparatus for optical information recording
JPS5250701A (en) Optical signal reproduction device
GB1285108A (en) Method and device for reproducing signals stored on a transparent medium
JPS52145005A (en) Highly densed recording signals reproduction device
JPS5724039A (en) Information recording medium
JPS5331105A (en) Information recording member
JPS54139702A (en) Information recoeding medium and production of the same
JPS5350707A (en) Optical record reproducing apparatus
JPS5348703A (en) Optical signal regenerator
JPS5348704A (en) Optical signal regenerator
JPS5217717A (en) Disk recording reproduction apparatus
JPS5250702A (en) Optical information recording and reproduction apparatus
JPS5237007A (en) Optical recording reproducing equipment
JPS5548836A (en) Signal recording board and recording and reproducing method
JPS52139312A (en) Recording/reproducing device
JPS6464150A (en) Magneto-optical recording medium
JPS5347802A (en) Signal regenerator
JPS57172546A (en) Optical recording medium
JPS52121307A (en) Magnetic recording and reproducing system
JPS5315105A (en) Spacing detector of optical recorder/reproducer
JPS5413316A (en) Method for recording information signals in original of grooveless information recording medium disc