Title:
METHOD FOR MAKING USE OF H239 PRESENTATION TOKENS IN MULTI-STAGE CASCADE VIDEO CONFERENCE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2007/076637
Kind Code:
A1
Abstract:
A method for making use of H239 presentation tokens in a multi-stage cascade video conference
system performed in three or more cascades lower multi-point control unit includes
steps as follows: there is only one set of H239 presentation tokens in the conference
system; when the H239 presentation message is transmitted to the lower stage
conference, the multi-point control unit of the lower stage converts the terminal
number in the H239 presentation message into the terminal number allocated by
the lower stage conference; when the H239 presentation message is transmitted
to the higher stage conference, the multi-point control unit of the lower stage
converts the terminal number in the H239 presentation message into the terminal
number allocated by the higher stage conference; the terminal holding the H239
presentation tokens transmits the video of second channel.
Inventors:
MA ZHENG (CN)
CHEN JINGHAI (CN)
JIN ZIMING (CN)
CHEN JINGHAI (CN)
JIN ZIMING (CN)
Application Number:
PCT/CN2005/002437
Publication Date:
July 12, 2007
Filing Date:
December 31, 2005
Export Citation:
Assignee:
ZTE CORP (CN)
MA ZHENG (CN)
CHEN JINGHAI (CN)
JIN ZIMING (CN)
MA ZHENG (CN)
CHEN JINGHAI (CN)
JIN ZIMING (CN)
International Classes:
H04N7/15
Domestic Patent References:
| WO2004109975A1 | 2004-12-16 |
Foreign References:
| CN1283930A | 2001-02-14 | |||
| CN1284816A | 2001-02-21 |
Attorney, Agent or Firm:
CHINA SINDA INTELLECTUAL PROPERTY LTD. (Focus Place 19 Financial Street, Beijing 2, CN)
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