| US 7,448,086 B2 | ||
| Recording apparatus and method, reproducing apparatus and method, and memory medium | ||
| Yoichiro Sako, Tokyo (Japan); Tatsuya Inokuchi, Tokyo (Japan); Shunsuke Furukawa, Tokyo (Japan); and Takashi Kihara, Chiba (Japan) | ||
| Assigned to Sony Corporation, Tokyo (Japan) | ||
| Appl. No. 10/169,695 PCT Filed Nov. 02, 2001, PCT No. PCT/JP01/09625 § 371(c)(1), (2), (4) Date Jul. 03, 2002, PCT Pub. No. WO02/37494, PCT Pub. Date May 10, 2002. |
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| Claims priority of application No. 2000-337308 (JP), filed on Nov. 06, 2000. | ||
| Prior Publication US 2003/0012375 A1, Jan. 16, 2003 | ||
| Int. Cl. H04L 9/14 (2006.01) | ||
| U.S. Cl. 726—27 [726/26; 726/30; 713/189; 713/193; 369/47.12; 369/84; 369/275.3] | 6 Claims |
| 1. A recording apparatus for recording data on a memory medium comprising a plurality of data areas for recording content
data, a plurality of lead-in areas, and a plurality of lead-out areas, the recording apparatus comprising:
an input terminal for inputting encrypted content data; and
an optical pickup for,
recording first encrypted content data into a first data area on said memory medium,
recording a first part of a first decrypting key for decrypting said first encrypted content data and a first part of first
copyright management information for restricting reproduction/copy of said first encrypted content data into a first lead-in
area on an inner rim side of said first data area,
recording a second part of the first decrypting key and a second part of the first copyright management information into a
first lead-out area on an outer rim side of said first data area,
recording second encrypted content data into a second data area on said memory medium,
recording a first part of a second decrypting key for decrypting said second encrypted content data and a first part of second
copyright management information for restricting reproduction/copy of said second encrypted content data into a first lead-in
area on an inner rim side of said second data area, and
recording a second part of the second decrypting key and a second part of the second copyright management information into
a first lead-out area on an outer rim side of said second data area; wherein
the data areas are positioned relative to one another on said memory medium in a radial direction.
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