Source: http://www.google.com/patents/US7761926?dq=5,867,764
Timestamp: 2014-03-13 13:01:18
Document Index: 672106852

Matched Legal Cases: ['art 3', 'art 4', 'art 5', 'art 3', 'art 4', 'art 5', 'art 4']

Patent US7761926 - Information recording/playback system - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn information recording medium 1 is provided with: a user data recording part 3 which records user data; a random-pattern-information recording part 4 which records random pattern information from a random physical phenomenon; and an authentication data recording part 5 which records, as authentication...http://www.google.com/patents/US7761926?utm_source=gb-gplus-sharePatent US7761926 - Information recording/playback systemAdvanced Patent SearchPublication numberUS7761926 B2Publication typeGrantApplication numberUS 11/325,413Publication dateJul 20, 2010Filing dateJan 5, 2006Priority dateFeb 8, 1999Fee statusPaidAlso published asEP1069567A1, US6999587, US20060120237, WO2000046804A1Publication number11325413, 325413, US 7761926 B2, US 7761926B2, US-B2-7761926, US7761926 B2, US7761926B2InventorsTomoyuki Asano, Yoshitomo OsawaOriginal AssigneeSony CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (24), Non-Patent Citations (3), Referenced by (1), Classifications (18), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetInformation recording/playback systemUS 7761926 B2Abstract An information recording medium 1 is provided with: a user data recording part 3 which records user data; a random-pattern-information recording part 4 which records random pattern information from a random physical phenomenon; and an authentication data recording part 5 which records, as authentication data, medium identification information created on the basis of the random pattern information detected from the random-pattern-information recording part 4 and a digital signature for each manufacturer with respect to the medium identification information.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4577289Dec 30, 1983Mar 18, 1986International Business Machines CorporationHardware key-on-disk system for copy-protecting magnetic storage mediaUS4584641Aug 29, 1983Apr 22, 1986Paul GuglielminoCopyprotecting system for software protectionUS4734796 *Sep 6, 1983Mar 29, 1988Amiram GrynbergTechnique for preventing unauthorized copying of information recorded on a recording medium and a protected recording mediumUS4849836Jul 24, 1986Jul 18, 1989Software Heaven, Inc.Copy protection for computer discsUS5513169 *Nov 29, 1994Apr 30, 1996Digital Audio Disc CorporationCD-ROM with machine-readable i.d. codeUS5724327Feb 14, 1995Mar 3, 1998U.S. Phillips CorporationRecord carrier having first variations of a first physical parameter corresponding to information recorded thereon and second variations of a second physical parameter relating to recovery of the informationUS6226770Jun 3, 1997May 1, 2001Ifunga Test Equipment B.V.Method of providing an optical data carrier with identity informationUS6999587 *Feb 7, 2000Feb 14, 2006Sony CorporationInformation recording/reproducing systemJP2002500796A Title not availableJPH106673A Title not availableJPH117412A Title not availableJPH0836747A Title not availableJPH0955730A Title not availableJPH0973414A Title not availableJPH1021144A Title not availableJPH1079119A Title not availableJPH07182766A Title not availableJPH08339629A Title not availableJPH10105974A Title not availableJPH10233019A Title not availableJPH10336172A Title not availableJPH11205305A Title not availableWO1997014146A1May 15, 1996Apr 17, 1997Matsushita Electric Ind Co LtdOptical disk, bar code formation method for optical disk, optical disk reproduction apparatus, and marking method, laser marking method for optical disk, and method of optical disk productionWO1998001852A1Jun 3, 1997Jan 15, 1998Jan BarchanMethod of providing an optical data carrier with identity information* Cited by examinerNon-Patent CitationsReference1Japanese Office Action dated Dec. 8, 2009, for corresponding JP 2000-597802, 2 pages.2Japanese Office Action dated Feb. 23, 2010, for corresponding JP 2000-597802, 2 pages.3Japanese Office Action dated Sep. 29, 2009, for corresponding JP 2000-597802, 3 pages.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS20100275036 *Sep 18, 2009Oct 28, 2010Shunji HaradaRecording/reproducing system, recording medium device, and recording/reproducing device* Cited by examinerClassifications U.S. Classification726/30, 369/47.13, 380/203, 386/252International ClassificationG06F9/00, G11B20/00Cooperative ClassificationG11B20/00094, G11B20/00123, G11B20/00115, G11B20/00173, G11B20/00086, G11B20/0021European ClassificationG11B20/00P5, G11B20/00P3B, G11B20/00P1C, G11B20/00P1D, G11B20/00P1, G11B20/00PLegal EventsDateCodeEventDescriptionJan 17, 2014FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google