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and then it is also sent to U13 in YUV format of 24bit.
24bit RGB signal is output and sent to main processing IC JAG-ASM(U12) after the
above two routes of signal are processed in matrix , color density, and tint in U13.. Another
route of RGB signal of computer VGA is also sent to U12, where two routes of signal are
subject to selection and processing for picture format. One route RGB signal of VGA
undergoes A/D conversion before being subject to selection and digit display processing
together with another route of signal, including OSD, GAMMA calibration, brightness and
contrast processing. These signals are changed into the format of 1024*768. The above
RGB signal of 24 bit is output to LVDS converter DS90C385(U31)of; where it is converted
into four pairs of low voltage differential signal acceptable for PDP screen. Then, the signal
is sent to PDP screen for picture display.
The audio R/L of left and right sound channels D4,YCbCr and BS undergoes selection
and is then sent to MSP3420(NA04). AV,SVHS and R/L of VGA are sent to NAQ04.In NA04,
the second sound IF( SIF) is demodulated into audio signal together with other four routes
of sound signal being switched for selection. The selected R/L after the processing in
volume and sound effect is then output. One route MONO sound is for AV OUT, the other
route is sent to M62494(NA08)of SRS sound field processor for SRS processing. The
signal, after sound power amplification by TPA3001(NA10,NA11), is for driving the speaker.
BS tuner outputs other route BIT/DET. The power is supplied by power supply board on
PDP screen and then transformed into different required power supplies.
Summary of Contents for PS42K8
Page 1: ...COLOR TELEVISION PS42K8...
Page 11: ...10 4 IC BLOCK 1 MSP3420...
Page 12: ...11 2 VPC3230...
Page 13: ...12 3 JAG ASM...
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