Figure 13-4: Ntsc/Pal Image Positioning - Epson S1D13506 Technical Manual

Page 194
Vertical
Sync
Odd
Field
1, 3
Vertical
Sync
Even
Field
2, 4
Symbol
t1 TV Horizontal Non-Display Period
t2 TV Horizontal Display Width
t3 TV HRTC Start Position
t4 TV Vertical Display Height
t5 TV Vertical Non-Display Period
t6 TV VRTC Start Position
S1D13506
X25B-A-001-12
t1
t6
t6
t3
0
Horizontal Sync

Figure 13-4: NTSC/PAL Image Positioning

The maximum Horizontal and Vertical Display Widths shown in Table 13-5: "Minimum
and Maximum Values for NTSC/PAL" include display areas that are normally hidden by
the edges of the TV. The visible display dimensions are shown in Figure 13-5: "Typical
Total Display and Visible Display Dimensions for NTSC and PAL," on page 195 as a
guideline. The actual visible display area for a particular TV may differ slightly from those
dimensions given. Table 13-6: "Register Values for Example NTSC/PAL Images" lists
register values for some example images.
Table 13-5: Minimum and Maximum Values for NTSC/PAL
Parameter
t2
t5
Image
t4 / 2
Odd Lines (1, 3, 5, ...)
t5 + 1T
LINE
Even Lines (2, 4, 6, ...)
t4 / 2
NTSC
Register(s)
min max
52 158 510
50 400 752
53 25 t2 - 158
57, 56 396 484
58 20 64
59 0 t5 - 20
Epson Research and Development
Vancouver Design Center
t3
909 (NTSC)
1134 (PAL)
PAL
Units
min max
215 511 T
4SC
624 920 T
4SC
25 t2 - 215 T
4SC
496 572 T
LINE
26 64 T
LINE
0 t5 - 26 T
LINE
Hardware Functional Specification
Issue Date: 02/03/26