Error detection/correction and fault detection/recovery – Pulse or data error handling – Data formatting to improve error detection correction...
Reexamination Certificate
2006-10-17
2006-10-17
Britt, Cynthia (Department: 2138)
Error detection/correction and fault detection/recovery
Pulse or data error handling
Data formatting to improve error detection correction...
C714S748000, C370S395400
Reexamination Certificate
active
07124333
ABSTRACT:
A data transmission apparatus for relaying data transmitted from the transmitting end in units of packets, each packet having additional information relating to its sequence number, priority and data reproduction time, comprises: a receiving unit for receiving packets transmitted from the transmitting end; a priority decision unit for deciding the priority of each of the received packets; a retransmission packet storage unit for storing packets the priorities of which are equal to or higher than a predetermined value, as retransmission packets, on the basis of the priority of each packet decided by the priority decision unit; a retransmission instruction receiving unit for receiving a retransmission request from a terminal at the receiving end; a retransmission decision unit for deciding whether retransmission of the packet for which the retransmission request has been made should be performed or not, on the basis of the retransmission request and the storage status of the retransmission packets in the retransmission packet storage unit a transmission queue management unit for setting the transmission order of the received packets and the packets which have been decided as packets to be retransmitted, on the basis of additional information which is given to each packet; and a transmission unit for transmitting the data of these packets in the transmission order set by the management unit. Therefore, the transmission quality in a radio section in real-time transmission is improved and, further, the number of retransmission times is reduced.
REFERENCES:
patent: 5084877 (1992-01-01), Netravali et al.
patent: 5255268 (1993-10-01), Cato et al.
patent: 5550847 (1996-08-01), Zhu
patent: 5768533 (1998-06-01), Ran
patent: 6031818 (2000-02-01), Lo et al.
patent: 6052812 (2000-04-01), Chen et al.
patent: 6085253 (2000-07-01), Blackwell et al.
patent: 6104757 (2000-08-01), Rhee
patent: 6141324 (2000-10-01), Abbott et al.
patent: 6233283 (2001-05-01), Chiu et al.
patent: 6301222 (2001-10-01), Kovacevic et al.
patent: 6373842 (2002-04-01), Coverdale et al.
patent: 6389066 (2002-05-01), Ejzak
patent: 6469992 (2002-10-01), Schieder
patent: 6674477 (2004-01-01), Yamaguchi et al.
patent: 0 905 976 (1999-03-01), None
patent: 07-221789 (1995-08-01), None
patent: 09-191314 (1997-07-01), None
patent: 10-126772 (1998-05-01), None
patent: 10-243050 (1998-09-01), None
patent: 98/42132 (1998-09-01), None
RFC1889, “RTP: A Transport Protocol for Real-Time Applications”, Jan. 1996.
Seneviratne A. et al.: “Cellular networks and mobile internet”, Computer Communications, Butterworths & Co. Publishers Ltd., GB, vol. 21, No. 14, Sep. 15, 1998, pp. 1244-1255 XP004146584.
Papadopoulos C., Parulkar G.: “Retransmission-based error control for continuous media applications”, Proceedings of the Sixth International Workshop on Network and Operating Systems Support for Digital Audio and Video, 1996, pp. 5-12, XP002251288.
Rhee I: “Error Control Techniques for Interactive Low-bit Rate Video Transmission Over the Internet”, Computer Communications Review, Association for Computing Machinery, New York, US, vol. 28, No. 4, Oct. 1998, pp. 290-301, XP000914443.
Xue Li et al.: “Layered video multicast with retransmission (LVMR): evaluation of error recovery schemes”, Network and Operating Systems Support for Digital Audio and Video, 1997, pp. 161-172, XP010251695.
Sugh-Hoon Lee et al.: “Retransmission scheme for MPEG streams in mission critical mutimedia appllications” Euromicro Conference, Aug. 25, 1998, pp. 574-580, XP010298024.
Fukushima Hideaki
Hagai Makoto
Horii Seiji
Matsui Yoshinori
Miyazaki Akihiro
Britt Cynthia
Matsushita Electric - Industrial Co., Ltd.
Wenderoth , Lind & Ponack, L.L.P.
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