Cisco Systems 4640HDC 用户手册

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Data Sheet 
 
Page 1 of 4 
Cisco Explorer 4640HDC and 4650HDC High-Definition 
Set-Tops with Multi-Stream CableCARD Interface 
Power, flexibility, and advanced security features highlight the Cisco
®
 Explorer
®
 4640HDC and 
4650HDC High-Definition Set-Tops with Multi-Stream CableCARD™ (M-Card™) Interface. 
 
The 4640HDC and 4650HDC set-tops support the tru2way™ (formerly OCAP™) and Federal 
Communications Commission (FCC) mandates for separable security. The set-tops also offer 
MPEG-4 (H.264) high definition (HD) and standard definition (SD) decoding with HD and SD 
outputs and DOCSIS
®
 
2.0 data capability. The 4650HDC set-top also provides analog tuning. 
Figure 1.    Cisco Explorer 4650HDC front panel (image may vary from actual product and specification) 
 
Features 
Network Utilization Enhancements 
● 
1 GHz Tuning enables cable operators to expand network bandwidth to provide additional 
services such as VOD, tru2way, DOCSIS 2.0, and high-speed data 
● 
MPEG-4 (H.264) Decoding supports compression technology that provides better video 
quality at approximately half the data rate of MPEG-2 
● 
DOCSIS 2.0 provides greatly increased upstream throughput for future advanced services 
and provides a path for future IP video services (optional software) 
OpenCable and Conventional Network Support 
● 
M-Card Interface uses a Multi-Stream CableCARD (M-Card) for separable security 
● 
Axiom™ Middleware supports tru2way applications such as Service Navigators, Games, 
and other future tru2way applications (optional software) 
● 
DSG (DOCSIS Set-top Gateway) provides a powerful standard transport mechanism for 
command and control signaling between the set-top and service provider network (optional 
software) 
● 
DAVIC Receiver/Transmitter allows IP-based, real-time, two-way communication between 
the set-top and the service provider network for on-demand services (optional software)