Video Input - Toshiba D-VR3SU Service Manual

7-4 Video Input

7-4-1 Video Input Outline
DVD-R100 is the two Line Video input. Line 1 Video input is CVBS1 at the Rear Panel. Line 2 Video input is
CVBS2 & S-Video2 at the Front Panel.
The analog Video signal select Line 1 or Line 2 by the IC601 (VCR Micom).
TIC1 (Video Decoder) diverges from the 14.318185MHz crystal, then generates ITU-R656 (10bits) and 27MHz
clock.
TIC1 (Video Decoder) does closed caption, copy guard detect processing and A/D conversion of 11bit analog
Video signal converted into Digital Video signal (ITU-R656 Format) is outputted via DIC1 (MPEG2 Decoder &
Encoder with video Encoder) of digital part.
CVBS 1
Line 1
(Rear)
Video
Input
CVBS 2
Line 2
Y2
(Front)
Video
C2
Input
7-4-2 Analog Mux (SV1274)
IC801 is Analog Mux.
As Pin 64, 63 of the IC801 is controlled by the VCR Micom, IC801 select Line1 of CVBS[Pin4] and Line2 of
CVBS[Pin 6] andTIC1 select Line2 of S-Video[Pin9. Pin18].
◆The analog Video Signal of IC801 output is selected by the FIC1 via TIC1(Video Decoder : TVP5146) of analog
Video input parts.
CVBS
SV1274
Analog
Mux
IC801
Y
C
Fig. 7-8
ITU-R656 10bit
27MHz
Video
V_SYNC
Decoder
TIC1
/RSTAV
SCL
SDA
Circuit Operating Descriptions
A/V CODEC
DIC1
7-9