Huawei TE30 User Manual page 150

HUAWEI TE30 Videoconferencing Endpoint
User Guide
720p
B
broadcast (site)
broadcast single (site)
built-in MCU
C
call absent (sites)
call site
cascading
camera preset
CIF
continuous presence
D
delete site
dual stream
Issue 01 (2013-03-27)
720p is the shorthand name for a category of HDTV video modes. The number 720 stands
for the 720 horizontal scan lines of display resolution (also known as 720 pixels of
vertical resolution), while the letter p stands for progressive scan or non-interlaced. When
broadcast at 60 frames per second, 720p features the highest temporal (motion) resolution
possible under the ATSC standard. Progressive scanning reduces the need to prevent
flicker by filtering out fine details, so sharpness is much closer to 1080i than the number
of scan lines would suggest.
All sites, except for the site being broadcast, view the site that is broadcast. On the
Broadcast Site screen, users can choose between Broadcast Single and Broadcast in Turn.
Broadcast one specified site.
A built-in unit of an endpoint, using the built-in MCU, the endpoint can hold a multipoint
conference that supports multiple functions, such as site access, video exchange, audio
mixing, data processing, and signaling interaction.
Place calls to all the sites that are on the site list but are absent from the conference.
Place a call to a site to add the site to the conference.
Multiple MCUs are connected in series at different layers to allow the number of
participants to expand beyond what a single MCU can support. In cascading mode, an
MCU in an upper layer can control an MCU in a lower layer.
Users can control a camera by zooming, panning, and tilting the camera or changing the
focus. Then, users can store this camera position and assign a number to this position.
This preset position is a camera preset. During a conference, users can move the camera
to a camera preset by selecting the relevant number.
CIF (Common Intermediate Format), also known as FCIF (Full Common Intermediate
Format), is a format used to standardize the horizontal and vertical resolutions in pixels
of YCbCr sequences in video signals, commonly used in video teleconferencing systems.
It was first proposed in the H.261 standard.
A feature in multi-point conferencing that allows the video endpoint to see images from
multiple video endpoints at the same time. All parties remain continuously visible or
'present' for the duration of the call and the user can have control over the screen layout.
Continuous presence is better suited for team collaboration since it allows participants
to see the reactions (body language) of all participants, not just the speaker.
Remove a site from the site list.
During a conference, two channels of video streams can be sent or received
simultaneously. For example, one channel is used for transmitting video (such as video
captured by a camera) and the other channel is used for transmitting presentation (such
as a computer desktop). The two channels of videos can be displayed on two displays.
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E Terminology
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