Title:
端末装置、配信サーバ、映像データの受信方法及び映像データの送信方法
Document Type and Number:
Japanese Patent JP4288994
Kind Code:
B2
Abstract:
A radio line is easily influenced in its nature by attenuation or reflection of an electromagnetic wave or the like and the surrounding environment. Due to this fact, a variation of the data transfer speed frequently occurs at the time of image streaming so as to become a hindrance to reproduction of an image at the receiving terminal. A distribution server is provided with a multiplexer for multiplexing information indicating the transmission start time for the image data and a switching unit for switching an image bit rate in response to a request from the receiving terminal. The receiving terminal uses information indicating a transmission start time for the image data, monitors the receiving bit rate and sends out a request for transmission of the most-suitable image bit rate in response to a comparison thereof.
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Inventors:
Yasuhiro Akiyama
Junichi Kimura
Toru Yokoyama
Junichi Kimura
Toru Yokoyama
Application Number:
JP2003105956A
Publication Date:
July 01, 2009
Filing Date:
April 10, 2003
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04B7/26; H04M3/42; H04M3/487; H04M11/00; H04N7/173; H04N21/2383; H04N21/442; H04W4/06; H04W4/18; H04W28/00
Domestic Patent References:
| JP2000332829A | ||||
| JP10336626A | ||||
| JP2000183958A |
Attorney, Agent or Firm:
Manabu Inoue