|
|
发表于 2007-2-10 01:31:38
|
显示全部楼层
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：
8 [% L2 J* z/ o" w! }
! O, j S$ i5 m! a* P
1. Key Features
) m) K1 I( H, G5 J; @
1) Complete transceiver design of wireless communication at 5 GHz.
( A0 y, i1 Y0 Z: |+ z2) Supports 4.9 to 5.9 GHz frequency band and is controlled by software to comply with
n! z/ I+ J4 \, Mdifferent country spectrum requirements.
9 T( d- I; f9 s n9 s7 p! T+ i
3) Dynamic frequency selection to resist interferences.
; {% w/ @/ A4 m7 w5 L, m8 T. k5 l4) Close-loop power control to minimize power consumption and be a friendly neighbor to
$ I+ a1 y2 W0 e" ]& zother WLAN networks at 5 GHz.
# l' u- |4 S; \: U% a B5) Secure networking to assure privacy and content rights protection.
" {5 n) H' I6 ^& p# u
6) Supports most of the digital video formats at TS layer including MPEG-2, MPEG-4,
]% u U* j0 H6 Y$ }! I% ?
H.264 and VC-1 (WM-9).
# ?! k6 S3 v4 I; V4 y8 @/ ]. X
7) Supports point-to-point video connection with full QoS and point-to-multipoint video
" J2 n, x+ z7 K5 Dbroadcasting.
! F( X# s% _- o! y$ }
8) Configurable expansion I/O connector enabling easy integration with existing host
& ~' c2 R- x3 B5 X( j* fsystems.
$ m: z2 e! _" h$ ?9 V. ^+ m
9) HCI interface to the host CPU to enable flexible application development at the host level.
( _( e8 a6 ]$ J2 e. J# b10) Transmission of IR control signals to the video source devices from the TV location.
1 d: ^9 p) P' U5 i
2. System Diagram
9 s4 ]; [6 A" w% s2 a* P/ I7 A) C' ~WAV3000 wireless module creates a proprietary 5 GHz wireless network for MPEG
6 A& p% ]8 J( s3 o$ Q6 @
transport stream (TS) communication. The WAV3000 is a complete wireless transceiver module
/ S3 N: N; m) h$ o4 H( i% Othat can be integrated as video sender and video receiver according to the host platform. When
4 I! n* f2 C8 K
used as video sender, WAV3000 can be embedded in a video source device (DVD, VCR, PVR,
: y+ L' q5 D7 R3 O( z' R
STB, or PC); and when used as video receiver, WAV3000 can be embedded in a video display
% A$ N( R9 Z6 w+ S7 m0 |$ M/ O
device (TV, flat panel or video monitors). So a pair of the WAV3000 provides a complete,
2 r! _7 v9 v# }$ m$ v* {3 pglueless wireless connection from TS (of video source) to TS (of video display) with guaranteed
3 w# T, P3 q6 Q! a, r- I* o
QoS.
( p- D7 o% f; A4 {& x. |
The WAV3000 includes a configurable expansion connector (CEC). All I/O signals can be
R( f+ |, K" X4 A8 {& P
routed and configured through the CEC enabling easy integration with existing host systems.
: V- O+ L; |$ K8 c. o5 L
Figure 1 gives a functional block diagram of the WAV3000 and associated personality
# ~9 l7 |$ s- O) l3 i9 A% bmodule (PM). The personality module intends to simulate the host product platform in which the
/ h- e0 `: l& P, O1 B6 T$ ^WAV3000 will be integrated. The PM supports demo and evaluation of the WAV3000 with a
' S- Y& s/ G# E- r5 s/ x
variety of video sources (analog and digital) for different applications. It also provides
" x! {( {' u5 g8 u$ o* ` v6 Acapabilities for test and debugging of the core module.
0 c& l4 k+ @! h; Z7 o* W" N) @: [3 Functional Specifications
The WAV3000 supports standard MPEG Transport Stream input and output in either
; P& n. R* g) _% F
Parallel or Serial mode.
The Tx unit transmits the compressed MPEG TS signal to the Rx unit over the air, using the
/ T% f& _/ W& g1 }) O7 H
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% m) h/ `( U* \different 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
3 m* X, c! U' F% y* ^
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
- [: Z( s3 a7 ?: }! H8 ZMbps.
- p7 j) V! G: i4 System Security
! G* y7 z; G4 tThe communication is authenticated and the media stream is encrypted to assure for
+ L* h A' x5 _" e* b7 E* n! q& Mprotection of copyrighted material. Flexible pairing procedure between each Tx Unit and Rx Unit
8 M5 w; D) L% c7 ]ensures private communications between each pair of units. This also allow for coexistence of
! L5 G2 g1 \, ~( ]( |) U9 L
multiple pairs of simultaneous operations without cross talk.
- b) v# w" n+ N. ?: K 此主题相关图片
9 s6 p; |$ O# H: h
/ U- g' {# d5 X< |
|
IP卡
狗仔卡
显身卡
楼主
