GB1506630A - Guiding of a light beam scanning spot on a track - Google Patents

Guiding of a light beam scanning spot on a track

Info

Publication number
GB1506630A
GB1506630A GB19558/75A GB1955875A GB1506630A GB 1506630 A GB1506630 A GB 1506630A GB 19558/75 A GB19558/75 A GB 19558/75A GB 1955875 A GB1955875 A GB 1955875A GB 1506630 A GB1506630 A GB 1506630A
Authority
GB
United Kingdom
Prior art keywords
track
guiding
light beam
beam scanning
scanning spot
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.)
Expired
Application number
GB19558/75A
Other languages
English (en)
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1506630A publication Critical patent/GB1506630A/en
Expired legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/30Coverings, e.g. protecting against weather, for decorative purposes
    • E06B3/301Coverings, e.g. protecting against weather, for decorative purposes consisting of prefabricated profiled members or glass
    • E06B3/305Covering metal frames with plastic or metal profiled members
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/54Fixing of glass panes or like plates
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/54Fixing of glass panes or like plates
    • E06B3/5409Means for locally spacing the pane from the surrounding frame
    • EFIXED CONSTRUCTIONS
    • E06DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06BFIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/54Fixing of glass panes or like plates
    • E06B3/5481Fixing of glass panes or like plates by means of discrete fixing elements, e.g. glazing clips, glaziers points
    • 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
    • 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
    • G11B7/0901Disposition 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 for track following only
    • G11B7/0904Dithered tracking systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)
GB19558/75A 1974-05-13 1975-05-09 Guiding of a light beam scanning spot on a track Expired GB1506630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2423074A DE2423074C2 (de) 1974-05-13 1974-05-13 Einrichtung zur Spurführung eines Lichtstrahlabtastkopfes

Publications (1)

Publication Number Publication Date
GB1506630A true GB1506630A (en) 1978-04-05

Family

ID=5915374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19558/75A Expired GB1506630A (en) 1974-05-13 1975-05-09 Guiding of a light beam scanning spot on a track

Country Status (8)

Country Link
JP (1) JPS50156947A (en:Method)
AT (2) AT351813B (en:Method)
BR (1) BR7502901A (en:Method)
CH (1) CH580854A5 (en:Method)
DE (1) DE2423074C2 (en:Method)
GB (1) GB1506630A (en:Method)
NL (1) NL7505545A (en:Method)
SE (1) SE397894B (en:Method)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2375690A1 (fr) * 1976-12-23 1978-07-21 Thomson Brandt Dispositif de detection de l'erreur de suivi radial pour lecteurs et enregistreurs optiques
CA1147456A (en) * 1978-03-23 1983-05-31 Raymond F. Ravizza Automatically compensated movable head servo circuit and method
US4232201A (en) * 1978-11-24 1980-11-04 Mca Discovision, Inc. Dithered center tracking system
DE3049004A1 (de) * 1980-12-24 1982-07-15 Robert Bosch Gmbh, 7000 Stuttgart Verfahren zur wiedergabe von auf plattenfoermigen traegern aufgezeichneten signalen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126535A (en) * 1961-12-27 1964-03-24 Transducer positioning system

Also Published As

Publication number Publication date
DE2423074A1 (de) 1975-11-27
BR7502901A (pt) 1976-03-23
ATA808275A (de) 1979-03-15
SE397894B (sv) 1977-11-21
DE2423074C2 (de) 1983-09-22
JPS50156947A (en:Method) 1975-12-18
ATA352975A (de) 1979-01-15
CH580854A5 (en:Method) 1976-10-15
AT351813B (de) 1979-08-10
SE7505429L (sv) 1975-11-14
NL7505545A (nl) 1975-11-17
AT352975B (de) 1979-01-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee