| US 7,493,648 B2 | ||
| Data transmission device, data receiving device, data transmitting method, data receiving method, recording device, playback device, recording method, and playback method | ||
| Ryuichiro Hisamatsu, Kanagawa (Japan); Takamichi Mitsuhashi, Tokyo (Japan); Tadashi Saito, Chiba (Japan); Katsutoshi Sakao, Kanagawa (Japan); Yasuhisa Nakajima, Kanagawa (Japan); and Hiroshige Okamoto, Kanagawa (Japan) | ||
| Assigned to Sony Corporation, Tokyo (Japan) | ||
| Filed on Apr. 10, 2001, as Appl. No. 9/832,229. | ||
| Claims priority of application No. 2000-109962 (JP), filed on Apr. 11, 2000; application No. 2000-109963 (JP), filed on Apr. 11, 2000; application No. 2000-109965 (JP), filed on Apr. 11, 2000; and application No. 2000-343104 (JP), filed on Nov. 10, 2000. | ||
| Prior Publication US 2002/0003815 A1, Jan. 10, 2002 | ||
| Int. Cl. H04N 7/16 (2006.01) | ||
| U.S. Cl. 725—136 [725/134; 725/142] | 34 Claims |
| 1. A data transmission device comprising:
a first generator for generating a first data stream that is utilized after the first data stream is accumulated in a recording
medium on a receiving side;
a second generator for generating a second data stream that includes audio data and video data;
a multiplexer for multiplexing the first data stream at a first coding rate and for additionally multiplexing the first data
stream having the first coding rate into the second data stream by changing a transmission rate of the first data stream to
a second coding rate lower than the first coding rate;
a transmitter for transmitting the multiplexed data stream that has been multiplexed by the multiplexer; and
a controller for controlling the multiplexer so that the transmission rate for the first data stream becomes lower than that
for the second data stream.
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