ES420411A1 - Reading disc-recordings - Google Patents

Reading disc-recordings

Info

Publication number
ES420411A1
ES420411A1 ES420411A ES420411A ES420411A1 ES 420411 A1 ES420411 A1 ES 420411A1 ES 420411 A ES420411 A ES 420411A ES 420411 A ES420411 A ES 420411A ES 420411 A1 ES420411 A1 ES 420411A1
Authority
ES
Spain
Prior art keywords
signal
reading
record carrier
control system
detector
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
ES420411A
Other languages
Spanish (es)
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES420411A1 publication Critical patent/ES420411A1/en
Expired 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
    • H04N5/7605—Television signal recording on discs or drums
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • 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
    • G11B7/081—Disposition or mounting of heads or light sources relatively to record carriers for time base error correction by moving the light beam
    • 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
    • G11B7/095—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 specially adapted for discs, e.g. for compensation of eccentricity or wobble
    • G11B7/0953—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 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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Multimedia (AREA)
  • Signal Processing (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)

Abstract

An apparatus for reading a disk-shaped record carrier, on which a signal is stored in tangentially arranged tracks, which includes at least one synchronization signal, comprising a reading unit provided with directing means and a signal detector. reading, the information stored at the record carrier scanning point being transferred, by the directing means, to the reading detector, which supplies the detected signal to an output, said directing system comprising a movable element, which is included in a control system and that, according to a control signal obtained from the synchronization signal extracted from the detected signal, controls the tangential position of the scanning point, characterized in that the control system includes a filter element that has such a characteristic that the transfer function of the complete control system has a passing characteristic of band, the frequency corresponding to the speed of the record carrier being within said bandpass. (Machine-translation by Google Translate, not legally binding)
ES420411A 1972-11-11 1973-11-09 Reading disc-recordings Expired ES420411A1 (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
ES420411A1 true ES420411A1 (en) 1976-04-16

Family

ID=19817346

Family Applications (1)

Application Number Title Priority Date Filing Date
ES420411A Expired ES420411A1 (en) 1972-11-11 1973-11-09 Reading disc-recordings

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
AT330258B (en) 1976-06-25
CH588123A5 (en) 1977-05-31
JPS5531527B2 (en) 1980-08-19
JPS50707A (en) 1975-01-07
DE2353673C2 (en) 1982-05-27
DK134875B (en) 1977-01-31
BE807159A (en) 1974-05-09
FR2327607A1 (en) 1977-05-06
NO141137B (en) 1979-10-08
NL7215306A (en) 1974-05-14
SE395558B (en) 1977-08-15
FR2327607B1 (en) 1978-04-21
IT999742B (en) 1976-03-10
ATA939773A (en) 1975-09-15
DK134875C (en) 1977-06-20
ZA738175B (en) 1975-05-28
AU6231873A (en) 1975-05-15
DE2353673A1 (en) 1974-05-16
BR7308761D0 (en) 1974-09-05
GB1452330A (en) 1976-10-13
NO141137C (en) 1980-01-16
CA1005908A (en) 1977-02-22

Similar Documents

Publication Publication Date Title
SE412134B (en) RECORDER, AND APPARATUS FOR ENTERING INFORMATION ON A RECORDER
SE415304B (en) SIGNAL PROCESSING SYSTEM CARDS AND PROCEDURES FOR PRODUCING THE SAME
GB1499293A (en) Magnetic disc data storage apparatus
NO770239L (en) APPARATUS FOR READING A RECORD BARNER WHICH IS STORED INFORMATION, EX. VIDEO AND / OR AUDIO INFORMATION.
ES420410A1 (en) Apparatus for reading a disc-shaped record carrier
DK137355B (en) Apparatus for reading a record carrier on which information is recorded in an optically readable structure.
SE444249B (en) DEVICE FOR RECORDING AND REPRODUCING INFORMATION SIGNALS
ES413867A1 (en) Information playback system
ES420411A1 (en) Reading disc-recordings
SE7413962L (en)
ES294583A1 (en) A signal receiver (Machine-translation by Google Translate, not legally binding)
DK138866B (en) Apparatus for reading a record carrier on which information is recorded in an optically readable structure.
SE384312B (en) SYSTEM FOR TRANSMISSING CONTINUOUSLY VARIOUS INFORMATION SIGNALS BY COMPRESSED PARTIAL MODULATION INCLUDING A SIGNALING SIGNAL GENERATOR AND A SIGNALING SIGNAL DETECTOR
DK137735B (en) Record carrier, where information is recorded in an optical structure, and apparatus for recording information on such a record carrier.
DK135558B (en) Apparatus for reading a record carrier on which information is recorded in at least one track.
FR2298856A1 (en) APPARATUS FOR MAGNETICALLY RECORDING WIDEBAND SIGNALS, FOR EXEM
GB1302568A (en)
FR1466591A (en) System and method for recording and reproducing signals
ES8701403A1 (en) Apparatus for reading a disc-shaped record carrier.
ES427857A1 (en) Information carrier of disc form for sound and/or video signals
BE844026A (en) DATA READING AND PROCESSING SYSTEM, ESPECIALLY FOR VARIABLE TIMES
ES404595A1 (en) Servo drive for a rotating system
ES413062A1 (en) Apparatus for reading records by optical means
NL185636C (en) Apparatus for recording and / or reproducing a signal on a tape, respectively.
GB2038046B (en) Digital alarm clock