MULTICAST RECEIVER - MATSUSHITA ELECTRIC IND CO LTD

Title:

MULTICAST RECEIVER

Document Type and Number:

Japanese Patent JP2007306514

Kind Code:

A

Abstract:

To provide a technology of reducing a transmission amount in the case of video transmission through a transmission path under a deteriorated noise environment such as a wireless transmission path.

A retransmission wait section 86 in a multicast receiver disclosed herein receives reception packets 79 from three DOWN receiving sections 85 of seats 71 to 73, stores one program data part when any of the packets is effective, particularizes which part is missing as to a missing program data part, outputs information denoting the particularized part as missing information 76, and outputs the stored program data parts together with retransmitted program data parts later as a program packet 78. A retransmission request section 88 requests retransmission of missing packets indicated by the missing information 76.

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Inventors:

OTA KAZUHIRO
OTA YOSHITAKA

Application Number:

JP2006135548A

Publication Date:

November 22, 2007

Filing Date:

May 15, 2006

Export Citation:

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Assignee:

MATSUSHITA ELECTRIC IND CO LTD

International Classes:

H04L1/16; H04L12/28; H04L12/70; H04N7/173; H04N21/431; H04N21/482; H04N21/488; H04N21/6405; H04W4/06; H04W28/04; H04W74/04; H04W84/12; H04W92/18

Attorney, Agent or Firm:

Shiro Nakajima
Shuji Matsumura
Kobayashi Kunito

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