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参数资料
| 型号： | OM5721 |
| 厂商： | NXP Semiconductors N.V. |
| 英文描述： | STB5660 Set-Top Box STB concept |
| 中文描述： | STB5660机顶盒机顶盒的概念 |
| 文件页数： | 14/20页 |
| 文件大小： | 100K |
| 代理商： | OM5721 |
1999 May 05
14
Philips Semiconductors
Product specification
STB5660 (Set-Top Box) STB concept
OM5721
5.5.4
F
EATURE DEMONSTRATION MENU
Table 5
Screens highlighting the main features of the Philips SAA7214/SAA7215 chip-set.
SCREEN
FEATURE
Audio
Audio routing and
Dual channel
Mute
Balance
Beep
LPCM demonstration
Audio routing options; mono, stereo, LL, RR.
Dual channel options; Channel 1, Channel 2, both (1-L, 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 bit map 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 hardware but handling this in software makes the function more flexible.
The actual copying is executed in the SAA7215 hardware by the DMU. Software however has
to upload the picture, initialize and start the DMU with correct parameters. The cost however
compared to the hardware 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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