Main Functions Of Video Communication System - Sony PCS-G70N Service Manual

3-1-2. Main Functions of Video
Communication System (PCS-G70/
G70P, PCS-G70N/G70NP)
1. User interface functions
. LED display of operation state
. Reception and decoding of SIRCS signal from remote
commander
. Creation and output of menu screen
. Input and selection of video signal
. Reception and demodulation of infrared video signal
(AV-Link)
. Output of video signal (main and sub)
. Output of video signal (individual area output for
multiple area meetings)
. Input and selection of audio signal
. Audio pickup using internal microphones
. Output of audio signal
. Function sound creation and output of ringer sound
. Control of camera unit
. Creation and transmission of SIRCS signal for monitor
control
. Data read and write of Memory Stick
. Control from external equipment in serial interface and
LAN interface
. Input and selection of RGB signal (when using Data
solution box)
. Output of RGB signal
. Input of audio signal for microphone with echo canceller
(when using microphone with echo canceller PCSA-A7)
PCS-G70N/G70NP/G70NP2
PCS-G70S/G70SP
2. Functions for communication
. Compression and coding of input video signal
. Compression and coding of input audio signal
. Creation of remote terminal control data
. Multiplexing of video/audio/T.120 input data and
transmission framing of it to line
. Line (ISDN/V.35) control and data transmission/
reception (when using ISDN unit)
. LAN (100BASE-TX/10BASE-T) interface control and
data transmission/reception
. Frame detection and separation of the reception data
from line and LAN
. Execution of the control data from remote terminal
. Decoding and expansion of audio data
. Decoding and expansion of video data
. Erasure of audio echo
. Compression and coding of input RGB image (when
using Data solution box)
. Decoding and expansion of reception RGB image (when
using Data solution box)
3-3 (E)