| US 7,486,700 B2 | ||
| Data transmission method for sequentially transmitting packets, data transmission apparatus, and data reception apparatus | ||
| Akihiro Miyazaki, Osaka (Japan); Hideaki Fukushima, Osaka (Japan); Carsten Burmeister, Darmstadt (Germany); and Rolf Hakenberg, Darmstadt (Germany) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Filed on Dec. 16, 2003, as Appl. No. 10/735,829. | ||
| Application 10/735829 is a division of application No. 09/598256, filed on Jun. 21, 2000, granted, now 6,914,903. | ||
| Claims priority of application No. 11-223378 (JP), filed on Aug. 06, 1999; and application No. 2000-055267 (JP), filed on Mar. 01, 2000. | ||
| Prior Publication US 2004/0136377 A1, Jul. 15, 2004 | ||
| Int. Cl. H04J 3/18 (2006.01) | ||
| U.S. Cl. 370—477 [370/202; 370/468; 709/247] | 16 Claims |
| 1. A data transmission method for sequentially transmitting packets having transmission data from a transmitting end to a
receiving end, said method comprising:
transmitting an uncompressed packet comprising uncompressed transmission data;
subsequently continuously transmitting compressed packets comprising compressed transmission data;
forming the compressed data to be comprised in the compressed packets using a first compression process, based on the uncompressed
data of the uncompressed packet and data to be transmitted in the compressed packets; and
forming the compressed data to be comprised in the compressed packets using a second compression process different from said
first compression process;
receiving a request from the receiving end according to a restoration error of restoring compressed data included in the compressed
packets at the receiving end; and
switching between said first and said second compression processes depending on the request from the receiving end.
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