| US 7,518,971 B2 | ||
| Recording medium, recording method, reproduction method, recording apparatus and reproduction apparatus | ||
| Toyoji Gushima, Osaka (Japan); Shigeru Furumiya, Hyogo (Japan); Takashi Ishida, Kyoto (Japan); Hiromichi Ishibashi, Osaka (Japan); Hironori Deguchi, Osaka (Japan); Atsushi Nakamura, Osaka (Japan); Junichi Minamino, Nara (Japan); Makoto Usui, Osaka (Japan); and Takeshi Nakajima, Nara (Japan) | ||
| Assigned to Panasonic Corporation, Kadoma (Japan) | ||
| Filed on May 02, 2008, as Appl. No. 12/114,399. | ||
| Application 12/114399 is a continuation of application No. 11/759271, filed on Jun. 07, 2007, granted, now 7,414,946. | ||
| Application 11/759271 is a continuation of application No. 11/552543, filed on Oct. 25, 2006, granted, now 7,403,462. | ||
| Application 11/552543 is a continuation of application No. 10/203849, granted, now 7,158,464, filed on Jan. 02, 2007, previously published as PCT/JP01/11507, filed on Dec. 26, 2001. | ||
| Claims priority of application No. 2000-395311 (JP), filed on Dec. 26, 2000; application No. 2001-043016 (JP), filed on Feb. 20, 2001; and application No. 2001-168882 (JP), filed on Jun. 04, 2001. | ||
| Prior Publication US 2008/0205237 A1, Aug. 28, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. G11B 7/004 (2006.01) | ||
| U.S. Cl. 369—59.25 [369/59.23; 369/275.3] | 3 Claims |
| 1. A recording medium comprising a recording area, wherein:
the recording area includes a first area,
the first area includes a fourth area including N number of frame areas, N being equal to or greater than 2,
each of the N number of frame areas includes an area in which a synchronization code sequence and at least a portion of data
are recorded,
the synchronization code sequence which is recorded in the frame area located at the start of the fourth area is different
by a code distance equal to or greater than 2 in the NRZI representation from any synchronization code sequence which is recorded
in any of the frame areas other than the frame area located at the start of the fourth area, and
the first area forms a unit of an error correction code.
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