SAMPLE SYSTEM CONFIGURATIONS
PCSA-A7
MAIN
CONTROL
VIDEO
SUB
CAMERA
Display
Projector
Mic
Speaker
Power Amp
IP NETWORK
Display
Mic
Speaker
Power Amp
IP NETWORK
Camcorder
VTR
Mixer
Memory Stick Media Support
*3
Private phone books can be created and stored on
Memory Stick media. By simply inserting the Memory
Stick media into the PCS-HG90, the unit automatically
recognizes and activates the private phone book,
thereby eliminating the need to re-enter contact
information to place a call. Memory Stick media has
a number of other uses, such as for saving setting
parameters and updating software.
*3
In addition to Memory Stick, Memory Stick PRO
TM
and
Memory Stick Duo
TM
/PRO Duo
TM
media with an adaptor
can also be used.
Other Features
• Flexible Display Patterns
(Full-screen, Picture-in-Picture, and
Picture-and-Picture including Side-by-Side
split screen)
• Supports Optional Echo Cancelling Mics
(PCSA-A7P4)
• FECC (Far End Camera Control)
• Full Setup and Control of PCS-HG90 via
Web Browser
• External Control Using RS-232C/Telnet
• H.235 AES (Advanced Encryption
Standard) – 128-bit Encryption
Sony has implemented a number of QoS functions in all of its currently
available visual communication systems. However, conventional QoS
methods are inadequate when handling large amounts of data associated
with high-definition video. Therefore, Sony has designed and
implemented intelligent QoS functions in its high-definition PCS-HG90.
Two major improvements have been made on the previous methods. First,
the system intelligently allocates the amount of ARQ, FEC, and video data
based on the bandwidth available, which is determined by the ARC
function. Second, FEC is performed with larger FEC blocks and the
number of parity packets are adjusted as required. This combination is
both efficient and effective for transmitting large amounts of data over IP
networks to help maintain high picture quality.
NETWORK
Transmission Distance / Delay (RTT: Round Trip Time)
Short RTT
Data T
ransmission
Rate
Intelligent Allocation
RTT
Long RTT
Effective at short RTT
Effective at long RTT
Real-time ARQ
Real-time ARQ
Adaptive FEC
Adaptive FEC
VIDEO DATA
ARC
Technical Note – Intelligent QoS Functions
Corporate/Education Applications
Broadcast/Professional Applications
MK10376V1.qxd 06.11.29 4:24 PM Page 6
