Source: http://www.google.com/patents/US7502307?dq=inassignee:google
Timestamp: 2014-03-09 13:34:32
Document Index: 201723849

Matched Legal Cases: ['Application No. 10', 'Application No. 10', 'Application No. 03736356', 'Application No. 07023886', 'Application No. 03721120', 'Application No. 03801199', 'Application No. 03736356', 'Application No. 10', 'Application No. 10', 'Application No. 200480007952', 'Application No. 2004124944', 'Application No. 2004', 'Application No. 2005', 'Application No. 03809910', 'Application No. 2004', 'Application No. 2004', 'Application No. 2004124944']

Patent US7502307 - Recording medium with restricted playback feature and apparatus and methods ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, capable of preventing unauthorized duplication of data streams, written thereon, onto another medium, such as a BD-RE or BD-R, which includes physical mark information, and to methods and apparatuses for forming,...http://www.google.com/patents/US7502307?utm_source=gb-gplus-sharePatent US7502307 - Recording medium with restricted playback feature and apparatus and methods for forming, recording, and reproducing the recording mediumAdvanced Patent SearchPublication numberUS7502307 B2Publication typeGrantApplication numberUS 11/488,820Publication dateMar 10, 2009Filing dateJul 19, 2006Priority dateJul 2, 2002Fee statusPaidAlso published asCA2459238A1, CA2459238C, CN1568507A, CN1607593A, CN100514458C, CN100550158C, EP1518227A1, EP1518227A4, EP1518227B1, EP2270783A2, EP2270783A3, US7102989, US8077572, US8432779, US20040233804, US20040233809, US20050105432, US20060262712, WO2004006231A1Publication number11488820, 488820, US 7502307 B2, US 7502307B2, US-B2-7502307, US7502307 B2, US7502307B2InventorsSang Woon Suh, Jin Yong KimOriginal AssigneeLg Electronics Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (94), Non-Patent Citations (42), Referenced by (2), Classifications (33), Legal Events (1) External Links: USPTO, USPTO Assignment, EspacenetRecording medium with restricted playback feature and apparatus and methods for forming, recording, and reproducing the recording mediumUS 7502307 B2Abstract A recording medium, such as a high-density and/or read-only recording medium, such as BD-ROM, capable of preventing unauthorized duplication of data streams, written thereon, onto another medium, such as a BD-RE or BD-R, which includes physical mark information, and to methods and apparatuses for forming, recording, reproducing, and restricting playback of the recording medium to prevent unauthorized duplication.
CROSS-REFERENCE TO RELATED APPLICATIONS This is a continuation of application Ser. No. 10/790,031, filed Mar. 2, 2004 now U.S. Pat. No. 7,102,989, which is a U.S. nonprovisional continuation application of PCT International Application No. PCT/KR2003/001292 filed on Jul. 1, 2003, the entire contents of each of which are hereby incorporated by reference, which further claims priority on Korean Patent Application No. 10-2002-0037947, filed on Jul. 2, 2002 and Korean Patent Application No. 10-2002-0054762 filed on Sep., 10, 2002, the entire contents of each which are also hereby incorporated by reference.
For example, as shown in FIG. 6, the physical mark information may be written with respect to a monotone HFM groove in which every recording field having a length of 36 T has either a high level or a low level, irrespective of the data sequence value of the physical mark information. Where the data value of a 36 T recording field is �1�, a mark/space pair including a mark having a length of 3 T (3 Tm) and a space having a length of 3 T (3 Ts) may be repeatedly recorded 6 times in the 36 T recording field to form a pattern of 6 aligned mark/space pairs. Where the data value of the 36 T recording field is �0�, a mark/space pair including a mark having a length of 9 T (9 Tm) and a space having a length of 9 T (9 Ts) may be repeatedly recorded 2 times in the 36 T recording field to form a pattern of 2 aligned mark/space pairs.
In the latter case, where the data value of the 36 T recording field is �0�, a mark having a length of 12 T (12 Tm), a space having a length of 12 T (12 Ts), and a mark having a length of 12 T (12 Tm) may be sequentially recorded in the 36 T recording field. In this case, however, errors may occur during a tracking servo operation, because the frequencies of RF and push-pull signals may be lowered due to the 12 T length of the marks and space. In another exemplary embodiment, repeated mark/space pairs are recorded each including a mark of 9 T (9 Tm) and a space of 9 T (9 Ts) which are capable of maintaining respective RF and push-pull signals at appropriate frequencies.
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No. 10/986,019.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8243567 *Sep 7, 2009Aug 14, 2012Panasonic CorporationOptical disc, playback apparatus for optical disc, and apparatus and method for manufacturing optical discUS20100284253 *Sep 7, 2009Nov 11, 2010Masaru YamaokaOptical disc, playback apparatus for optical disc, and apparatus and method for manufacturing optical disc* Cited by examinerClassifications U.S. Classification369/275.3, 369/53.2, 369/53.21, 369/47.12International ClassificationG11B7/005, G11B7/0045, G11B7/30, G11B20/00, G11B20/10, G11B7/24, G11B19/12, G11B23/28, G11B7/007, G11B20/12, G11B5/09Cooperative ClassificationG11B20/0063, G11B20/1217, G11B23/28, G11B2020/1288, G11B23/281, G11B2220/2541, G11B20/00086, G11B19/122, G11B7/00736, G11B7/0053European ClassificationG11B20/00P6C2, G11B20/00P, G11B23/28, G11B19/12C, G11B7/005W, G11B7/007R, G11B20/12D, G11B23/28ALegal EventsDateCodeEventDescriptionAug 27, 2012FPAYFee 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