Invention Grant
- Patent Title: Transmitting device, receiving device, packet transmission method, packet reception method, and programs for same
- Patent Title (中): 发送装置,接收装置,分组发送方法,分组接收方法及其程序
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Application No.: US12015042Application Date: 2008-01-16
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Publication No.: US08132071B2Publication Date: 2012-03-06
- Inventor: Morihiko Hayashi
- Applicant: Morihiko Hayashi
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.
- Priority: JPP2007-016239 20070126
- Main IPC: H04L1/18
- IPC: H04L1/18

Abstract:
A network interface unit of a server determines whether the transmission method of transmitting a packet is multicast transmission or unicast transmission; adds to the packet a second FEC when the transmission method of the packets is determined to be multicast transmission and adds to the packet an error detection code for ARQ when the transmission method of the packets is determined to be unicast transmission; and transmits the packet to clients. Each client determines whether the transmission method of the received packet is multicast transmission or unicast transmission; corrects the error on the basis of the second FEC when the transmission method is determined to be multicast transmission; and detects the error on the basis of the error detection code and generates a retransmission request signal when the transmission method is determined to be unicast transmission.
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