DOCSLIB.ORG

(12) Patent Application Publication (10) Pub. No.: US 2004/0152013 A1 Olson Et Al

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
(12) Patent Application Publication (10) Pub. No.: US 2004/0152013 A1 Olson Et Al US 2004O152013A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2004/0152013 A1 Olson et al. (43) Pub. Date: Aug. 5, 2004 (54) LIMITED PLAY OPTICAL MEDIA DEVICE Related U.S. Application Data WITH BARRIER LAYERS (60) Provisional application No. 60/444,431, filed on Feb. 3, 2003. (76) Inventors: Daniel Robert Olson, Voorheesville, NY (US); Marc Brian Wisnudel, Publication Classification Clifton Park, NY (US); Marc (51) Int. Cl. ................................................... G11B 7124 Schaepkens, Ballston Lake, NY (US); (52) U.S. Cl. ..................... 430/270.11; 430/945; 369/284 Robert Franklin Thompson, Kennebunk, ME (US) (57) ABSTRACT The present disclosure relates to a limited play optical Storage media and a method for limiting access to data Correspondence Address: thereon. This Storage media includes a first Substrate; a Raymond E. Farrell, Esq. reflective layer; a data Storage layer disposed between Said Carter, DeLuca, Farrell & Schmidt, LLP first Substrate and Said reflective layer; a reactive layer Suite 225 comprising at least one reactive material disposed on Said at 445 Broad Hollow Road least one reflective layer; an optically transparent Second Melville, NY 11747 (US) Substrate disposed between the reactive layer and a laser incident Surface of the optical Storage media; and an oxygen permeable barrier layer disposed between the reactive layer (21) Appl. No.: 10/657,631 and a laser incident Surface of the optical Storage media, Said reactive layer having an initial percent reflectivity of about 50% or greater and a percent reflectivity of about 45% or (22) Filed: Sep. 8, 2003 less after exposure to oxygen. Limited-play "reverse-mastered"DVD-5 With reactive dye in adhesive and topical barrier coating Polycarbonate (L1) XXX& XXX XXXX X X X X X X X X X X X X X X X X X X X X X YX YX{XXXXX& XXX & S& Polycarbonate (LO) 11 13 Patent Application Publication Aug. 5, 2004 Sheet 1 of 8 US 2004/0152013 A1 FIG. 1 O-)Ne 5 3 10 12 FIG. 2 wasya. FIG. 3 Oxidation Kinetics of leucomethylene blue to methylene blue in a topical PMMA coating on a DVD O O 20 40 60 80 100 120 Time Patent Application Publication Aug. 5, 2004 Sheet 2 of 8 US 2004/0152013 A1 FIG. 4 UV Topcoat on PMMAleuco methylene blue basecoat 40 30 PMMAILeucomethylene blue as 20 basecoat, no UV topCOat 10 O 0.0 5.0 10.0 15.0 20.0 Time Hours FIG. 5 Comparison of Kinetics of Samples With and Without Barrier Coating O 20 40 60 80 100 Time Hours -B-A. no topcoat -e-B. topc cured 6s after (6s total) a C. topc Cured 24s after (24s total) -0-D. topc cured 6sec before (12s total) ----A---- E. topc cured 24s before (30 total) Patent Application Publication Aug. 5, 2004 Sheet 3 of 8 US 2004/0152013 A1 FIG. 6 Limited-play "reverse-mastered" DVD-5 with reactive dye in adhesive and topical barrier Coating Polycarbonate (L1) XXXXXXXXXXX-Y, Bonding Adhesive YYX Containing YX XXYYX Reactive Dye S3.OXOXOXXOXOXOXX Polycarbonate (LO) FIG. 7 Limited-play "reverse-mastered" DVD-5 with reactive dye Coating and topical barrier Coating 15 Polycarbonate (L1) 2 Reflective Layer 2 XXXXXXXXXXXXXXXX KXXXXXXXXXXXXXXX x:Bonding{XXXXXXXXXXXXXXX AdhesiveXKXXXXXXXXXXXXXXX 19 III Reactive Dye Coating II 21 Polycarbonate (LO) 11 Poyatonate to 13 Patent Application Publication Aug. 5, 2004 Sheet 4 of 8 US 2004/0152013 A1 FIG. 8 Limited-play "reverse-mastered" DVD-5 with reactive dye coating and topical barrier coating Polycarbonate (L1) s URactive Dye Coating III XBondingCXXXXXXXXXXXXXXXXXXXXXXXX xBonding AdhesiveXAdhesivexKXOXOXOXOXOXOXOXOXOXOXOXOXOXOX Polycarbonate (LO) NBarrier Layer N Patent Application Publication Aug. 5, 2004 Sheet 5 of 8 US 2004/0152013 A1 FIG. 9 Limited-play "reverse-mastered" DVD-5 with reactive dye in adhesive and barrier layer Polycarbonate (L1) XX Bonding Adhesive Containing Reactive Dye X NBarrier Layer N Polycarbonate (LO) FIG. 10 Limited-play "reverse-mastered"DVD-5 with reactive dyein adhesive and barrier layer Polycarbonate (L) NBarrier Layer N KXXXXXXXXXXXX Bonding Adhesive Containing Reactive Dye XXXXXXXXXX XXX Polycarbonate (LO) Patent Application Publication Aug. 5, 2004 Sheet 6 of 8 US 2004/0152013 A1 FIG 11 Limited-play "reverse-mastered" DVD-5 with reactive dye coating and barrier layer Polycarbonate (L) HII Reactive Dye Coating III XBondingXXXXXXXXXXXXXXX AdhesiveXXXX XXXX XXXXXX XXX NBarrier Layer N Polycarbonate (L0) FIG. 12 15 Polycarbonate (L) 2Reflective Layer Z2 III Reactive Dye Coating III 21 13 SeeSXXX XXXXX XXXX XXXX XXX XXXX XXXXXXX XXX 19 alA-4A-aa-A-4alaala-AA-AA-AA-AA-AA-AA-A-a-AA-4AXX Bonding Adhesive XXX: a 4AAAA Polycarbonate (L0) 11 Patent Application Publication Aug. 5, 2004 Sheet 7 of 8 US 2004/0152013 A1 FIG. 13 Polycarbonate (L1) XXXXXXXXXXXXXX e QXXX XXX XXXX XXX QX OXOXOXBonding AdhesiveXC OXOXOXOXOXX C XXXXXMit Reactive Dye Coating& MM Polycarbonate (LO) Patent Application Publication Aug. 5, 2004 Sheet 8 of 8 US 2004/0152013 A1 FIG. 14 Limited-play DVD-9 with topical barrier coating 15 Polycarbonate (L1) 2. Reflective Layer 2 &CXXXXXXXXXXXXXXX s? Bonding Adhesive Containing Reactive DWey KXXXXXXX)&XXXXXXXX 17 III Semireflective Layer II 23 Polycarbonate (LO) 11 13 FIG. 15 Limited-play DVD-9 with internal barrier coating Polycarbonate (L1) XBondingCXXX CX Adhesive Containing Reactive DyeX(XXX IIIBarrier Layer-- II4YYYYYYY Polycarbonate (LO) US 2004/0152013 A1 Aug. 5, 2004 LIMITED PLAY OPTICAL MEDIA DEVICE WITH 0008 Limited play optical discs are disclosed in U.S. Pat. BARRIER LAYERS Nos. 6,011,772, 5,815,484, 6,343,063 and 6,338.933 and U.S. patent application Ser. No. 2003/0002431. U.S. Pat. 0001. This application claims priority to U.S. Provisional No. 5,815,484 teaches that limited-play optical discs can be Application No. 60/444,431 filed Feb. 3, 2003, the contents made by Superimposing a film containing an oxygen Sensi of which are incorporated by reference herein. tive, reduced form of a dye, including methylene blue, over BACKGROUND OF THE INVENTION the Surface of the data structures on a disc. U.S. Pat. No. 0002 This disclosure relates to novel limited play storage 6,343,063 describes the use of barrier layers releasably media with limited playability to minimize the risk of loss of coupled to discs. U.S. patent application Ser. No. 2003/ intellectual property. 0002431 discloses placing a reactive layer between a sub strate and the laser incident Surface of a DVD. 0.003 Optical, magnetic and magneto-optic media are primary Sources of high performance Storage technology 0009. There is a great desire on the part of movie studios which enables high Storage capacity coupled with a reason to protect their intellectual property. Commercialization of able price per megabyte of Storage. Use of optical media has limited-play data Storage media that can be easily defeated become widespread in audio, Video, and computer data to afford data Storage media with unlimited playability applications in Such formats as compact disk (CD), digital would present an unacceptable risk of losing intellectual versatile disk (DVD) including multi-layer structures like property. It is also preferable to develop Systems utilizing DVD-5, DVD-9, and multi-sided formats such as DVD-10, barrier layers that are not releasably coupled to discs. and DVD-18, magneto-optical disk (MO), and other write once and re-writable formats such as CD-R, CD-RW, DVD BRIEF DESCRIPTION OF THE INVENTION R, DVD-RW, DVD+RW, DVD-RAM, and the like, herein 0010. The present disclosure relates to limited play opti after collectively "data Storage media”. In these formats, cal Storage media and a method for limiting access to data data are encoded onto a Substrate into a digital data Series. In pre-recorded media, Such as CD, the data are typically pits thereon. This Storage media comprises: and grooves formed on the Surface of a plastic Substrate 0011) a first Substrate; through a method Such as injection molding, Stamping or the like. 0012) at least one reflective layer; 0004. In recordable media, the data are encoded by laser, 0013 a data storage layer disposed between said which illuminates an active data layer that undergoes a phase first Substrate and Said at least one reflective layer; change, thus producing a Series of highly-reflecting or non-reflective regions making up the data Stream. In these 0014 a reactive layer comprising at least one reac formats, a laser beam first travels through a plastic Substrate tive material disposed on Said at least one reflective before reaching the data layer. At the data layer, the beam is layer; either reflected or not, in accordance with the encoded data. 0.015 an opticallvp y transparentp second Substrate dis The laser light then travels back through the plastic and into posed between the reactive layer and a laser incident an optical detector System where the data are interpreted. Surface of the optical Storage media; and 0005. In some applications, it is desirable to have a limited life for an optical disc. For example, Sample com 0016 an oxygen permeable barrier layer disposed puter programs are provided to potential customers in order between the reactive layer and a laser incident Sur to entice them to purchase the Software. The programs are face of the optical Storage media, intended to be used for a limited period of time. Addition 0017 said reactive layer having an initial percent reflec ally, music and movies are currently rented for a limited time tivity of about 50% or greater and a percent reflectivity of period. In each of these applications and others, when that about 45% or less after exposure to oxygen. time has expired, the disc must be returned.
Load more

Recommended publications
  • (12) Patent Application Publication (10) Pub. No.: US 2004/0209034 A1 Tompson Et Al
    US 20040209034A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2004/0209034 A1 Tompson et al. (43) Pub. Date: Oct. 21, 2004 (54) LIMITED PLAY OPTICAL DEVICES WITH Publication Classification INTERSTITIAL REACTIVE LAYER AND METHODS OF MAKING SAME (51) Int. Cl." ....................................................... B32B 3/02 (52) U.S. Cl. ............................................................ 428/64.4 (75) Inventors: Robert F. Tompson, Kennebunk, ME (US); Neil Exter, Lexington, MA (US); (57) ABSTRACT Yannis Bakos, New York, NY (US); Richard A. Minns, Arlington, MA Methods and apparatus are provided for making an optically (US); Larry Takiff, Arlington, MA readable Storage media in which the reading beam passes (US) through a bonding layer configured with a reactive material Correspondence Address: that transforms from an optically transparent State to an WILMER CUTLER PICKERING HALE AND optically opaque State after exposure to a predefined Stimu DORR LLP lus, thereby inhibiting access to the data encoded on the 60 STATE STREET optically readable Storage media. The method includes Steps BOSTON, MA 02109 (US) of Synthesizing a blocked dye combining the blocked dye with a carrier material curing the resultant combination (73) Assignee: Flexplay Technologies, Inc., New York, deblocking the dye to produce a reduced dye in the resultant NY bonding layer exposing the optically readable Storage media (21) Appl. No.: 10/837,826 with the reactive material in its bonding layer to a prede termined Stimulus. In a further aspect of the present inven (22) Filed: May 3, 2004 tion methods and apparatus are provided for making an optically readable Storage media wherein the reading light Related U.S.
    [Show full text]
  • Bamfield P., Hutchings M. Chromic Phenomena.. Technological
    Chromic Phenomena Technological Applications of Colour Chemistry Second Edition Chromic Phenomena Technological Applications of Colour Chemistry Second Edition Peter Bamfield Consultant, Penarth, UK Michael G. Hutchings DyStar UK Ltd, Manchester, UK ISBN: 978 1 84755 868 8 A catalogue record for this book is available from the British Library r Peter Bamfield and Michael G. Hutchings 2010 All rights reserved Apart from fair dealing for the purposes of research for non commercial purposes or for private study, criticism or review, as permitted under the Copyright, Designs and Patents Act 1988 and the Copyright and Related Rights Regulations 2003, this publication may not be reproduced, stored or transmitted, in any form or by any means, without the prior permission in writing of The Royal Society of Chemistry or the copyright owner, or in the case of reproduction in accordance with the terms of licences issued by the Copyright Licensing Agency in the UK, or in accordance with the terms of the licences issued by the appropriate Reproduction Rights Organization outside the UK. Enquiries concerning reproduction outside the terms stated here should be sent to The Royal Society of Chemistry at the address printed on this page. The RSC is not responsible for individual opinions expressed in this work. Published by The Royal Society of Chemistry, Thomas Graham House, Science Park, Milton Road, Cambridge CB4 0WF, UK Registered Charity Number 207890 For further information see our web site at www.rsc.org Preface to Second Edition It is almost a decade since the appearance of the first edition of ‘‘Chromic Phenomena’’ in 2001 when its stated aim was ‘‘to provide an overview of the many applications that colour chemistry, in its widest sense, has found in the last couple of decades’’.
    [Show full text]
  • EVERYDAY PRACTICAL ELECTRONICS Is Fully and Service Engineers Protected, and Reproduction Or Imitations in Whole Or in Part Are Expressly Forbidden
    Copyright Ó 2004, Wimborne Publishing Ltd (408 Wimborne Road East, Ferndown, Dorset, BH22 9ND, UK) and TechBites Interactive Inc., (PO Box 857, Madison, Alabama 35758, USA) All rights reserved. WARNING! The materials and works contained within EPE Online — which are made available by Wimborne Publishing Ltd and TechBites Interactive Inc — are copyrighted. You are permitted to make a backup copy of the downloaded file and one (1) hard copy of such materials and works for your personal use. International copyright laws, however, prohibit any further copying or reproduction of such materials and works, or any republication of any kind. TechBites Interactive Inc and Wimborne Publishing Ltd have used their best efforts in preparing these materials and works. However, TechBites Interactive Inc and Wimborne Publishing Ltd make no warranties of any kind, expressed or implied, with regard to the documentation or data contained herein, and specifically disclaim, without limitation, any implied warranties of merchantability and fitness for a particular purpose. Because of possible variances in the quality and condition of materials and workmanship used by readers, EPE Online, its publishers and agents disclaim any responsibility for the safe and proper functioning of reader-constructed projects based on or from information published in these materials and works. In no event shall TechBites Interactive Inc or Wimborne Publishing Ltd be responsible or liable for any loss of profit or any other commercial damages, including but not limited to special, incidental, consequential, or any other damages in connection with or arising out of furnishing, performance, or use of these materials and works. ISSN 0262 3617 PROJECTS .
    [Show full text]
  • Libraries • Policy • Technology • Media
    Cites & Insights Crawford at Large Libraries • Policy • Technology • Media Volume 5, 2005 Numbers 1-14 Walt Crawford ISSN 1534-0937 Cites & Insights: Crawford at Large, ISSN 1534-0937, is written and produced at least monthly by Walt Crawford, a senior analyst at RLG. Opinions herein do not reflect those of RLG. Comments should be sent to [email protected]. Cites & Insights is sponsored by YBP Library Services, http://www.ybp.com. Cites & Insights: Crawford at Large is available at http://cites.boisestate.edu Cites & Insights: Crawford at Large is copyright © 2005 by Walt Crawford: Some Rights Reserved. Original material in this work is licensed under the Creative Commons Attribution- NonCommercial License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc/1.0 or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA. Cites & Insights comes from Mountain View, California. All body type is Berkeley Oldstyle Book. Headings are Friz Quadrata BT. Composition and layout done in Microsoft Word XP (including index). Translation to PDF via Adobe Acrobat 7 Index to Cited Articles “Mw” refers to the Midwinter issue (5:2), “Sp” to the Spring issue (5:5), "J/A" to the July/August issue (5:9), and "Mf" to the Mid-Fall issue (5:13). “‘Censorship’ bill lifts ban on speech”, May 2 “Dispelling five myths about e-books”, Nov 10 “‘First sale’ and DVDs?”, May 9 “Does the music matter?”, Feb 5 “’Rights’ in digital rights management”, Jan 21 “Dogpile: Search engines don’t have much in common”,
    [Show full text]