WO1996041335A3 - Compact read/tracking system for optical tape recording - Google Patents

Compact read/tracking system for optical tape recording Download PDF

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Publication number
WO1996041335A3
WO1996041335A3 PCT/IB1996/000718 IB9600718W WO9641335A3 WO 1996041335 A3 WO1996041335 A3 WO 1996041335A3 IB 9600718 W IB9600718 W IB 9600718W WO 9641335 A3 WO9641335 A3 WO 9641335A3
Authority
WO
WIPO (PCT)
Prior art keywords
data
read
read beam
modulated
reflected
Prior art date
Application number
PCT/IB1996/000718
Other languages
French (fr)
Other versions
WO1996041335A2 (en
Inventor
Scott M Hamilton
Billy C Frederick
William D Mccoy
James R Boyd
Michael W Montana
Original Assignee
E Systems Inc
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 E Systems Inc filed Critical E Systems Inc
Priority to AU63150/96A priority Critical patent/AU6315096A/en
Publication of WO1996041335A2 publication Critical patent/WO1996041335A2/en
Publication of WO1996041335A3 publication Critical patent/WO1996041335A3/en

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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • 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
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • 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
    • G11B7/0901—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 for track following only
    • 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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/14—Heads, e.g. forming of the optical beam spot or modulation of the optical beam specially adapted to record on, or to reproduce from, more than one track simultaneously

Abstract

A read/tracking system of an optical tape recorder for optically reading a data signal on light sensitive recording media (108) during a read function. A read beam is shaped to illuminate on the recording media a plurality of recorded data channels within a data track comprising the data signal. The read beam is modulated by data marks within the plurality of data channels to generate a reflected data modulated read beam. This reflected data modulated read beam is detected by detector (142) to recover the recorded data. The data image in the reflected data modulated read beam is detected to recover the recorded data. The data image in the reflected data modulated read beam is also used to generate an auto tracking control signal for electronics (156) which automatically adjusts the positioning of the objective lens (152) for proper positioning of the read beam on the recording media. The data track is, therefore, automatically tracked while the data track is being read during a read function.
PCT/IB1996/000718 1995-06-07 1996-06-06 Compact read/tracking system for optical tape recording WO1996041335A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU63150/96A AU6315096A (en) 1995-06-07 1996-06-06 Compact read/tracking system for optical tape recording

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US47683995A 1995-06-07 1995-06-07
US08/476,839 1995-06-07

Publications (2)

Publication Number Publication Date
WO1996041335A2 WO1996041335A2 (en) 1996-12-19
WO1996041335A3 true WO1996041335A3 (en) 1997-02-06

Family

ID=23893468

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1996/000718 WO1996041335A2 (en) 1995-06-07 1996-06-06 Compact read/tracking system for optical tape recording

Country Status (3)

Country Link
AU (1) AU6315096A (en)
WO (1) WO1996041335A2 (en)
ZA (1) ZA964613B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1873761A1 (en) 2006-06-30 2008-01-02 Thomson Licensing, S.A. Device and method for scanning data stored on a recording medium
EP1873762B1 (en) * 2006-06-30 2010-03-17 Thomson Licensing SA Device and method for scanning data stored on a recording medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4815067A (en) * 1986-10-06 1989-03-21 Thorn Emi Plc. Optical rotary headwheel tape recording system
US5081617A (en) * 1990-09-24 1992-01-14 Creo Products Inc. Optical system for simultaneous reading of multiple data tracks
US5400308A (en) * 1992-08-19 1995-03-21 Olympus Optical Co., Ltd. Optical information recording/reproducing device capable of recording information on a moving medium and reproducing information by using reproducing light beams

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4815067A (en) * 1986-10-06 1989-03-21 Thorn Emi Plc. Optical rotary headwheel tape recording system
US5081617A (en) * 1990-09-24 1992-01-14 Creo Products Inc. Optical system for simultaneous reading of multiple data tracks
US5400308A (en) * 1992-08-19 1995-03-21 Olympus Optical Co., Ltd. Optical information recording/reproducing device capable of recording information on a moving medium and reproducing information by using reproducing light beams

Also Published As

Publication number Publication date
AU6315096A (en) 1996-12-30
ZA964613B (en) 1996-12-12
WO1996041335A2 (en) 1996-12-19

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