# US 7,609,598 B2 · Hybrid optical disc > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,609,598 B2 - Document ID: US7609598B2 - Status: Granted - Kind: B2 - Application number: 11/483,654 - Filed: 2006-07-11 - Published: 2007-01-11 - Granted: 2009-10-27 - Earliest claimed: 2005-07-11 - Assignees: Sanyo Electric Co., Ltd. - Inventors: Morio Nakatani - Web page: https://patentgrep.com/patent/US7609598B2 ## CPC - G11B 23/281: {by changing the physical properties of the record carrier} - G11B 20/00086: {Circuits for prevention of unauthorised reproduction or copying, e.g. piracy (indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00)} - G11B 20/00739: {wherein the usage restriction is associated with a specific geographical region} - G11B 23/0021: {discs} - G11B 7/24038: Multiple laminated recording layers - G11B 2007/0013: {for carriers having multiple discrete layers} - G11B 2220/235: Multilayer discs, i.e. multiple recording layers accessed from the same side - G11B 2220/2583: wherein two standards are used on a single disc, e.g. one DVD section and one CD section - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) ## Abstract Hybrid optical disc has a DVD layer and a HDDVD layer in a laminating direction. When regional assignments as shown in FIGS. 5A and 5B are applied to these layers, regional information in the DVD layer contains “1” in the bit position corresponding to Code 2 and Code 3, and the HDDVD layer contains “1” in the bit position corresponding to Code p, Code q, and Code r+1 through r+4. Thereby, any one of contents recorded in the two layers can be reproduced in Japan, Greenland, Korea, and Southeast Asia nations. ## Claims ### Claim 1 A hybrid optical disc comprising: a plurality of recording layers arranged in a laminating direction, including a first layer and a second layer responsive to a first laser light and a second laser light, respectively, the first and second laser lights having different wavelengths; more than one set of contents information recorded in the first and second recording layers using a first format and a second format, respectively; first regional information, recorded in the first recording layer, for specifying regions allowed for reproducing the contents information recorded in the first recording layer, from regions divided by first regional assignment for the first format; and second regional information, recorded in the second layer, for specifying regions allowed for reproducing the contents information recorded in the second recording layer, from regions divided by second regional assignment for the second format, wherein the first regional assignment is different from second regional assignment, and the regions allowed for reproducing the contents information recorded in the first layer match the regions allowed for reproducing the contents information recorded in the second layer. ### Claim 2 (depends on 1) The hybrid optical disc according to claim 1, wherein the first regional information and the second regional information are set such that regions specified thereby match each other in respect of countries or regions employing the same video signal format. ### Claim 3 (depends on 1, 2) The hybrid optical disc according to one of claims 1 and 2, wherein the first regional information and the second regional information are set such that the number of regions allowed for reproducing the contents information is smallest. ### Claim 4 (depends on 1, 2) The hybrid optical disc according to one of claims 1 and 2, wherein when one of the regions divided by the first regional assignment includes two or more regions divided by the second regional assignment, and when the first regional information specifies the one of the regions, all of the two or more regions divided by the second regional assignment are specified by the second regional information. ### Claim 5 (depends on 1, 2) The hybrid optical disc according to one of claims 1 and 2, wherein when part of one of the regions divided by the first regional assignment includes two or more regions divided by the second regional assignment, and when the first regional information specifies the one of the regions at least all of the two or more regions divided by the second regional assignment are specified by the second regional information. ### Claim 6 (depends on 1, 2) The hybrid optical disc according to one of claims 1 and 2, wherein when a part of a first region divided by the first regional assignment and a part of a second region divided by the first regional assignment correspond to a third region divided by the second regional assignment, and when the first regional information specifies the first region and the second region, at least the third region is specified by the second regional information. ### Claim 7 (depends on 1, 2) The hybrid optical disc according to one of claims 1 and 2, wherein a format of the first recording layer for the first regional information is different from a format of the second recording layer for the second regional information.