參數(shù)資料
型號(hào)： OM5730
廠商： NXP Semiconductors N.V.
英文描述： STB5860 (Set-Top Box) STB concept(STB5860機(jī)頂盒初步設(shè)計(jì))
中文描述： STB5860（機(jī)頂盒）機(jī)頂盒的概念（STB5860機(jī)頂盒初步設(shè)計(jì)）
文件頁(yè)數(shù)： 14/20頁(yè)
文件大?。?/td> 80K
代理商： OM5730
1999 Aug 25
14
Philips Semiconductors
Preliminary specification
STB5860 (Set-Top Box) STB concept
OM5730
5.5.4
F
EATURE DEMONSTRATION MENU
Table 6
Screens highlighting the main features of the Philips SAA7219/SAA7215 chip-set
SCREEN
FEATURE
Audio
Audio routing and
dual channel
Mute
Balance
Beep
LPCM demonstration
audio routing options: mono, stereo, LL and RR; dual channel options: channels 1 and 2, both
(1-L and 2-R)
sound muted
control via a text box for left/right balance
control of the volume, frequency and duration; the beep can then be heard
Show the possibility of decoding Linear Pulse Code Modulated (LPCM) audio samples. This
besides the decoding of normal MPEG audio although both cannot be not done at the same
time. This feature is for example used to play uploaded audio samples.
A command is given when the audio and video decoding is running. This command will start
the demonstration. The function itself will play about 1 second of LPCM audio and will
continue with normal MPEG audio and video decoding afterwards.
IEEE 1394
IEEE 1394 disable
I/O of IEEE 1394 traffic can be disabled; IEEE 1394 will carry on relaying any IEEE 1394
between the two IEEE 1394 ports; also choose between input/output of data into systems
Smart card
Smart card
a service scrambled using the default keyword will be descrambled upon insertion of a smart
card which contains authorization to use the default keyword
PC download
PC download
When selected, the MPEG board will wait for the download of a BMP picture, via the
IEEE 1284 port. Upon completion of the download the picture will be displayed, the progress
of the download is also displayed.
MIPS performance
MIPS performance
Block copy
this will show the MIPS performance in drystones under the current setup
To show a fast block copy, a bit map picture is copied across the screen. This function is also
supported in HW but handling this in SW makes the function more flexible. The actual copying
is executed in the SAA7215 HW by the DMU. SW however has to upload the picture, initialize
and start the DMU with correct parameters. The cost however compared to the HW tiling is
processor and memory use.
Graphics
Text and drawings
a combination of different fonts and line drawings to demonstrate colour depth and resolution
capabilities
fast transfer feature; via IEEE 1284
demonstration of the different graphics layers, by displaying quarter screen video over a
MPEG I frame background with superimposed text and cursor
combination of video and graphic layers showing fading in and out of the graphics layer
one smaller picture is displayed multiple times in a user selectable rectangle
two pictures in one plane, overlapping each other where the user can move and select the
pictures
two user selectable and movable pictures in two planes, with transparency in the pictures
Fast transfer
Planes demo
Fade
Tiling
Hard-edge wiping
Soft-edge wiping
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