Integra PLA-50FP1 Manual page 107

MAIN PWB Block
1. Video signal processor block
In the MAIN PWB, each video signal selected at the VIDEO PWB is converted into a digital signal for the
purpose of various signal processing such as enlargement, contraction, and so on. The processed signal output
is sent to the plasma display module.
The contents of signal flow control and IC processing for analog signal inputs are different from those for digital
signal inputs (RGB3). In addition, for the respective analog signal inputs, the flow of signals can differ according
to the type of an input signal.
(1) Flow of video signals, video (for RGB inputs), HDTV (for RGB inputs) signals
"YU"
The RGB signal input entered from the YU connector is converted into a digital signal at the AD converter,
IC6501. (Processing of RGB x 8 bits x 2 phases = 48 lines) IC7501 is used to convert an RGB signal into a
chrominance (422) signal. In IC8003, a horizontal interlace signal of 15 kHz (34 kHz) is converted into a
progressive signal of 31 kHz (67 kHz). IC8502 is in charge of screen size conversion for normal size, full
size, digital zoom, etc. The processed signal inputs are entered in IC9000 again. In this IC9000, γ process-
ing, gradation processing, and white balance processing are carried out for digital video signals. In addition,
the synthesis of ON-screen signals is carried out there. In IC9003 and IC9004, 48-bit parallel signals are
processed for conversion into LVDS serial signals and the output is sent to the plasma display module ("AD"
connector).
(2) Flow of DVD and HDTV (chrominance input) signals
"YU"
The chrominance signal input entered from the YU connector is converted into a digital signal at the AD
converter, IC6501. (Processing of YUV x 8 bits x 2 phases = 48 lines) IC7501 is used for the processing of
color depth and tone. In IC8003, a horizontal interlace signal of 15 kHz (33 kHz) is converted into a progres-
sive signal of 31 kHz (67 kHz). In IC9000, the chrominance signal is converted into the RGB signal. IC8502
is in charge of screen size conversion for normal size, full size, digital zoom, etc. The processed signal
inputs are entered in IC9000 again. In this IC9000, γ processing, gradation processing, and white balance
processing are carried out for digital video signals. In addition, the synthesis of ON-screen signals is carried
out there. In IC9003 and IC9004, 48-bit parallel signals are processed for conversion into LVDS serial
signals and the output is sent to the plasma display module ("AD" connector).
LPF AD
Video:8MHz Converter
HD:30MHz IC6501
I-P
422→RGB
Convert
IC9000
IC8003
LPF AD
Video:8MHz Converter
HD:30MHz IC6501
I-P
422→RGB
Convert
IC9000
IC8003
RGB→422
IC7501
γ Process
Change Size
On screen
IC8502
IC9000
Color/Tint
IC7501
γ Process
Change Size
On screen
IC8502
IC9000
7
Parallel→
serial
IC9403, 4
Parallel→
serial
IC9403, 4