BR7308761D0 - Apparatus for reading a record holder in the form of a disc - Google Patents

Apparatus for reading a record holder in the form of a disc

Info

Publication number
BR7308761D0
BR7308761D0 BR8761/73A BR876173A BR7308761D0 BR 7308761 D0 BR7308761 D0 BR 7308761D0 BR 8761/73 A BR8761/73 A BR 8761/73A BR 876173 A BR876173 A BR 876173A BR 7308761 D0 BR7308761 D0 BR 7308761D0
Authority
BR
Brazil
Prior art keywords
disc
reading
record holder
record
holder
Prior art date
Application number
BR8761/73A
Other languages
Portuguese (pt)
Inventor
P Janssen
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of BR7308761D0 publication Critical patent/BR7308761D0/en

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/76Television signal recording
    • H04N5/7605Television signal recording on discs or drums
    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00Control of position or direction
    • G05D3/12Control of position or direction using feedback
    • G05D3/14Control of position or direction using feedback using an analogue comparing device
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/081Disposition or mounting of heads or light sources relatively to record carriers for time base error correction by moving the light beam
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/095Disposition 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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953Disposition 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 specially adapted for discs, e.g. for compensation of eccentricity or wobble to compensate for eccentricity of the disc or disc tracks

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Moving Of The Head To Find And Align With The Track (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
BR8761/73A 1972-11-11 1973-11-08 Apparatus for reading a record holder in the form of a disc BR7308761D0 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7215306A NL7215306A (en) 1972-11-11 1972-11-11

Publications (1)

Publication Number Publication Date
BR7308761D0 true BR7308761D0 (en) 1974-09-05

Family

ID=19817346

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8761/73A BR7308761D0 (en) 1972-11-11 1973-11-08 Apparatus for reading a record holder in the form of a disc

Country Status (16)

Country Link
JP (1) JPS5531527B2 (en)
AT (1) AT330258B (en)
BE (1) BE807159A (en)
BR (1) BR7308761D0 (en)
CA (1) CA1005908A (en)
CH (1) CH588123A5 (en)
DE (1) DE2353673C2 (en)
DK (1) DK134875B (en)
ES (1) ES420411A1 (en)
FR (1) FR2327607A1 (en)
GB (1) GB1452330A (en)
IT (1) IT999742B (en)
NL (1) NL7215306A (en)
NO (1) NO141137C (en)
SE (1) SE395558B (en)
ZA (1) ZA738175B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1577132A (en) * 1976-03-19 1980-10-22 Rca Corp Compensation apparatus for a servo system with periodic command signals
JPS52120805A (en) * 1976-04-02 1977-10-11 Sony Corp Servo apparatus
CA1198766A (en) * 1981-04-20 1985-12-31 Atsuo Tanaka Magnetic rolls and a method of making the same
JPS5940241U (en) * 1982-09-04 1984-03-14 大豊工業株式会社 Axis of rotation
DE8322639U1 (en) * 1983-08-05 1983-12-01 Uranit GmbH, 5170 Jülich Guide rollers for paper, foil finishing and printing machines

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381086A (en) * 1962-08-16 1968-04-30 Minnesota Mining & Mfg Reproduction of television signals from photographic disc recordings
US3673412A (en) * 1970-03-02 1972-06-27 Trw Inc Radiant energy beam scanning method and apparatus
US3711641A (en) * 1971-03-22 1973-01-16 Rca Corp Velocity adjusting system

Also Published As

Publication number Publication date
NL7215306A (en) 1974-05-14
DE2353673C2 (en) 1982-05-27
NO141137C (en) 1980-01-16
DK134875C (en) 1977-06-20
DK134875B (en) 1977-01-31
ATA939773A (en) 1975-09-15
CH588123A5 (en) 1977-05-31
FR2327607A1 (en) 1977-05-06
ES420411A1 (en) 1976-04-16
JPS5531527B2 (en) 1980-08-19
DE2353673A1 (en) 1974-05-16
AT330258B (en) 1976-06-25
JPS50707A (en) 1975-01-07
FR2327607B1 (en) 1978-04-21
IT999742B (en) 1976-03-10
GB1452330A (en) 1976-10-13
ZA738175B (en) 1975-05-28
SE395558B (en) 1977-08-15
AU6231873A (en) 1975-05-15
NO141137B (en) 1979-10-08
CA1005908A (en) 1977-02-22
BE807159A (en) 1974-05-09

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