JPS53100217A - Grooveless medium disc for information recording - Google Patents

Grooveless medium disc for information recording

Info

Publication number
JPS53100217A
JPS53100217A JP1487077A JP1487077A JPS53100217A JP S53100217 A JPS53100217 A JP S53100217A JP 1487077 A JP1487077 A JP 1487077A JP 1487077 A JP1487077 A JP 1487077A JP S53100217 A JPS53100217 A JP S53100217A
Authority
JP
Japan
Prior art keywords
grooveless
information recording
medium disc
information signal
recording
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
JP1487077A
Other languages
Japanese (ja)
Other versions
JPS5732417B2 (en
Inventor
Kosei Wada
Toshio Kaneshiro
Ichiro Ueno
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP1487077A priority Critical patent/JPS53100217A/en
Priority to NLAANVRAGE7801387,A priority patent/NL173104C/en
Priority to GB5035/78A priority patent/GB1600432A/en
Priority to GB5033/78A priority patent/GB1600431A/en
Priority to CA296,450A priority patent/CA1106061A/en
Priority to FR7803570A priority patent/FR2384316B1/en
Priority to FR7803571A priority patent/FR2382742B1/en
Priority to NLAANVRAGE7801440,A priority patent/NL173797C/en
Priority to CA000296451A priority patent/CA1119296A/en
Priority to DE2805322A priority patent/DE2805322C2/en
Priority to DE2805323A priority patent/DE2805323C2/en
Priority to FR7819900A priority patent/FR2384317B1/en
Publication of JPS53100217A publication Critical patent/JPS53100217A/en
Priority to US06/055,752 priority patent/US4327430A/en
Priority to US06/186,297 priority patent/US4420827A/en
Publication of JPS5732417B2 publication Critical patent/JPS5732417B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0045—Recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals

Abstract

PURPOSE:To make possible free changing to an arbitrary reproduction mode at the using of a groovelss disc by making the percentage modulation of the recording beam modulated by a second information signal lower than the percentage modulation of the recording nbeam mumodulated by a first information signal.
JP1487077A 1977-02-09 1977-02-14 Grooveless medium disc for information recording Granted JPS53100217A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
JP1487077A JPS53100217A (en) 1977-02-14 1977-02-14 Grooveless medium disc for information recording
NLAANVRAGE7801387,A NL173104C (en) 1977-02-09 1978-02-07 ROTARY TYPE INFORMATION SIGNAL RECORD MEDIUM AND DEVICE FOR RECORDING INFORMATION SIGNALS THEREOF.
NLAANVRAGE7801440,A NL173797C (en) 1977-02-09 1978-02-08 INFORMATION SIGNAL RECORD MEDIUM WITH A FLAT SURFACE, AND REGISTRATOR FOR SUCH A MEDIUM.
GB5033/78A GB1600431A (en) 1977-02-09 1978-02-08 Information signal recording medium of rotary type and apparatus for recording information signal thereon
CA296,450A CA1106061A (en) 1977-02-09 1978-02-08 Rotary recording medium with intermediate pits
FR7803570A FR2384316B1 (en) 1977-02-09 1978-02-08 RECORDING MEDIUM FOR VIDEO AND AUDIO SIGNALS AND DEVICE FOR MAKING RECORDINGS ON SUCH MEDIUM
FR7803571A FR2382742B1 (en) 1977-02-09 1978-02-08 MEDIUM FOR RECORDING VIDEO AND AUDIO SIGNALS AND DEVICE FOR MAKING RECORDINGS THEREOF
GB5035/78A GB1600432A (en) 1977-02-09 1978-02-08 Information signal recording medium of rotary type and apparatus for recording information signal thereon
CA000296451A CA1119296A (en) 1977-02-09 1978-02-08 Information signal recording medium of the rotary type
DE2805322A DE2805322C2 (en) 1977-02-09 1978-02-09 Rotatable information signal recording medium and recording arrangement for producing the information signal recording medium
DE2805323A DE2805323C2 (en) 1977-02-09 1978-02-09 Rotatable information signal recording medium and recording arrangement for the recording medium
FR7819900A FR2384317B1 (en) 1977-02-09 1978-07-04 DEVICE FOR RECORDING, IN PARTICULAR OF INFORMATION SIGNALS, ON ROTATING MEDIA
US06/055,752 US4327430A (en) 1977-02-09 1979-07-06 Information signal recording medium of rotary type with overlapped tracks
US06/186,297 US4420827A (en) 1977-02-09 1980-09-11 Disc reproducing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1487077A JPS53100217A (en) 1977-02-14 1977-02-14 Grooveless medium disc for information recording

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP17511981A Division JPS57103143A (en) 1981-10-31 1981-10-31 Grooveless information recording medium disk

Publications (2)

Publication Number Publication Date
JPS53100217A true JPS53100217A (en) 1978-09-01
JPS5732417B2 JPS5732417B2 (en) 1982-07-10

Family

ID=11873044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1487077A Granted JPS53100217A (en) 1977-02-09 1977-02-14 Grooveless medium disc for information recording

Country Status (1)

Country Link
JP (1) JPS53100217A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6147399U (en) * 1984-08-30 1986-03-29 ナショナル住宅産業株式会社 Structure of the shutter storage section

Also Published As

Publication number Publication date
JPS5732417B2 (en) 1982-07-10

Similar Documents

Publication Publication Date Title
JPS53134403A (en) Method of recording short wavelength modulation on original record
ES8201338A1 (en) Apparatus for writing digital information in a disc-shaped optically readable record carrier.
JPS5369006A (en) Reproducer of disc form signal recording media
AU508996B2 (en) Video signal recording/reproduction
AU511031B2 (en) Ablative optical recording medium
ES396425A1 (en) Sound records and reproducing apparatus
MX144410A (en) REPRODUCTION NEEDLE IMPROVEMENTS FOR PHONOGRAPHIC DISC PRINTERS
JPS53100217A (en) Grooveless medium disc for information recording
JPS53118117A (en) Recording method of information signal for original disc of groovless information recording medium discs
JPS53106012A (en) Cartridge for disc-type record medium
JPS5223310A (en) Data signal optical regeneration system
JPS5250702A (en) Optical information recording and reproduction apparatus
JPS5223304A (en) Optical read system of recorded signals in stereophonic sound recording disc
JPS5413316A (en) Method for recording information signals in original of grooveless information recording medium disc
JPS5276003A (en) Optical information recording system
JPS53100807A (en) Optical recording and reproducing system
JPS5382303A (en) Information recording panel and its reproducing system
JPS5371807A (en) Optical record reproducing system
JPS544101A (en) Signal pickupdevice for reproducing system using rotary information recording medium
JPS51142221A (en) Information reproducing device
JPS57203233A (en) Optical recorder and reproducer
JPS5424615A (en) Recorder of information signals for original discs of grooveless information recording discs
JPS5617586A (en) Signal writing system for static picture of optical disk
JPS53116126A (en) Magnetic recording-reproducing system
JPS52129406A (en) Record disc and preparation of said record disc