US 6,885,643 B1
Method and device for facilitating efficient data transfer via a wireless communication networkGeneral
US 6,885,643 B1
Method and device for facilitating efficient data transfer via a wireless communication network
Tech Center:
2600 Communications
Examiner:
Dang Ton
Art Unit:
2666 Digital Cameras; Image Analysis; Applications; pattern Recognition; Color and Compression; Enhancement and Transformation
Inventors:
Keiichi Teramoto; Yoshiaki Takabatake; Junko Ami; Kensaku Fujimoto
Assignee:
Priority:
09/30/99
Filed:
09/28/00
Granted:
04/26/05
Expiration:
10/24/22
Abstract
A wireless network system capable of controlling highly efficient transfer of AV data by an upper application, using information indicating a wireless link condition that varies dynamically is disclosed. In this wireless network system, a wireless terminal and a wire gateway apparatus each store collected wireless link condition information in a descriptor. An upper application on the wireless terminal reads the descriptor at said terminal device and obtains wireless LAN link condition information. The wireless gateway apparatus makes notification to a wireless terminal of a VTR, for example, that actually exists in a 1394 terminal as if it existed as a sub-unit in the local terminal device. The wireless terminal accesses the collected wireless link condition information and selects a AV/C command to be sent to the VTR sub-unit of the wireless gateway apparatus. The wireless terminal transfers the play command for playback to the wireless gateway apparatus. The wireless gateway apparatus transfers the play command to a VTR sub-unit within a terminal on the wired network. In accordance with this action, the VTR sub-unit within the terminal on the wired network starts transfer of AV data.