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发表于 2007-2-10 01:31:38
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re:5G 无线数字音视频传输模块介绍:...
5G 无线数字音视频传输模块介绍:
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1. Key Features : v Y4 L' G# L! t x' r+ h
1) Complete transceiver design of wireless communication at 5 GHz.
: h* O! t$ F1 }3 Q( I" D/ T2) Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with ) t! k: y9 J* j) [
different country spectrum requirements. e. E P! Y8 I/ d
3) Dynamic frequency selection to resist interferences. 9 \ g* o/ O5 J' R* |
4) Close-loop power control to minimize power consumption and be a friendly neighbor to " e' H2 o/ @$ p' p' L8 s- e
other WLAN networks at 5 GHz. & n7 l& @/ ~( T; y v) V: K: D/ \
5) Secure networking to assure privacy and content rights protection. E# b# e1 H; M/ n6 m& Y, o
6) Supports most of the digital video formats at TS layer including MPEG-2, MPEG-4, 3 S! ?) i1 l& E' t7 B( k" A
H.264 and VC-1 (WM-9).
, ]+ a% {& ?0 ?, S& {7) Supports point-to-point video connection with full QoS and point-to-multipoint video
/ J; P2 y* M" K. Z) v- @broadcasting. 1 y5 B" Z1 S' N1 E* p i7 R
8) Configurable expansion I/O connector enabling easy integration with existing host / ?$ @. l2 ^# ]* g2 |
systems. 5 H: A9 F K' n+ |% J& y
9) HCI interface to the host CPU to enable flexible application development at the host level. 7 u* N# P0 {- h& o2 ]
10) Transmission of IR control signals to the video source devices from the TV location.
" M S( O ~- R; S( ^8 F2. System Diagram
8 h% T# I% M6 ? W% R) l) \! EWAV3000 wireless module creates a proprietary 5 GHz wireless network for MPEG
1 o, i5 ~1 l$ u( |1 d3 X0 \, otransport stream (TS) communication. The WAV3000 is a complete wireless transceiver module
2 _/ a {. ^& E! W( {( `6 h% i$ |that can be integrated as video sender and video receiver according to the host platform. When
$ w: Y6 [( v. i! Qused as video sender, WAV3000 can be embedded in a video source device (DVD, VCR, PVR,
* L# d* r/ t: V8 ]2 aSTB, or PC); and when used as video receiver, WAV3000 can be embedded in a video display $ c( _) _' F7 k5 s. s3 H7 a3 r
device (TV, flat panel or video monitors). So a pair of the WAV3000 provides a complete, 9 ]5 A8 ?5 U/ k$ o o7 l. n; J
glueless wireless connection from TS (of video source) to TS (of video display) with guaranteed
- `4 z; v/ p2 XQoS.
/ W- `% @+ a ~1 u! X h+ Q- fThe WAV3000 includes a configurable expansion connector (CEC). All I/O signals can be
# g$ P2 Z0 g% h2 u* |routed and configured through the CEC enabling easy integration with existing host systems.
" D3 k% k# T. d7 s# jFigure 1 gives a functional block diagram of the WAV3000 and associated personality
7 Q) Q# k, ?9 M, C! v3 a" rmodule (PM). The personality module intends to simulate the host product platform in which the
% w1 V6 |. B) o- y6 ^! N: SWAV3000 will be integrated. The PM supports demo and evaluation of the WAV3000 with a
# V+ h) z, z' N% [6 _variety of video sources (analog and digital) for different applications. It also provides
9 R2 o' b$ J- Y: q, Wcapabilities for test and debugging of the core module.
7 @$ P) T2 J/ c" x3 {1 i3 Functional Specifications The WAV3000 supports standard MPEG Transport Stream input and output in either % K( s( i5 Q2 D, x! y: X2 ]
Parallel or Serial mode. The Tx unit transmits the compressed MPEG TS signal to the Rx unit over the air, using the 1 ~7 C. f2 R% C1 Y% R
WiViTM wireless networking technology at 5 GHz. Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
% T# p7 v7 V7 m; o' Udifferent country spectrum requirements. The system support data rates from 6 Mbps to 60 Mbps. The system supports video bit rates from 3 Mbps to 45 Mbps. Proprietary radio resource control with dynamic frequency selection (DFS) and close-loop - S. @0 Z+ l, L
power control (CLPC). Overall video propagation delay of less than 30 ms. Receive sensitivity is –86 dBm for video rate of 6 Mbps, and –78 dBm for video rate of 20
5 Z7 J/ S& f) WMbps.
; `$ S& I2 ]0 p4 x4 System Security
% n8 E! B1 L& O9 b) G3 F) w; KThe communication is authenticated and the media stream is encrypted to assure for ' w8 G. h1 j, i# J# s4 K& y9 X$ g8 i
protection of copyrighted material. Flexible pairing procedure between each Tx Unit and Rx Unit
4 C, R5 ~2 h1 E5 |' _0 ? nensures private communications between each pair of units. This also allow for coexistence of
: n* n" \; o! \% pmultiple pairs of simultaneous operations without cross talk.
/ v9 t. E. }2 ?& V; `4 V 此主题相关图片
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