| US 7,577,340 B2 | ||
| Device and method for recording real-time data | ||
| Hiroshi Yahata, Kadoma (Japan); Hiroshi Hamasaka, Hirakata (Japan); Katsuhiko Miwa, Moriguchi (Japan); Yosuke Uemondo, Kadoma (Japan); and Takenori Maehashi, Katano (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Filed on Jul. 18, 2005, as Appl. No. 11/184,006. | ||
| Claims priority of application No. 2004-212741 (JP), filed on Jul. 21, 2004. | ||
| Prior Publication US 2006/0077472 A1, Apr. 13, 2006 | ||
| Int. Cl. H04N 7/26 (2006.01) | ||
| U.S. Cl. 386—124 [386/40; 386/83; 386/88; 386/129] | 5 Claims |
| 1. A recording device for recording a digital stream onto a recording medium after determining a playback time length of the
digital stream to be recorded, comprising:
a first control unit operable to record the digital stream onto the recording medium for the determined playback time length,
even if a user makes a stop operation before the determined playback time length is reached;
a generating unit operable to generate playback section information specifying, as a playback section, a part of the digital
stream recorded up to a point at which the stop operation is made; and
a second control unit operable to record playback path information containing the playback section information onto the recording
medium,
wherein the playback time length is determined using the following equation:
the playback time length≧ time H/α,
where the time H is calculated (i) by dividing a free capacity currently remaining in the recording medium by a bit rate set
by the user for the recording device, or (ii) by depending on a record presetting made by the user, and
α is a number of two or more pieces of playback section information that the generating unit is operable to generate.
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