Chapter 6 Functions Superimposed Over TV Signals
235
6.4 WSS
6.4.1 Description and specifications
■
What is WSS (Wide Screen Signaling)?
“WSS (Wide Screen Signaling)” is a system for multiplexing the aspect ratio information of the images in the vertical sync
blanking interval, and sending it.
■
WSS specifications
WSS supports the following TV signals.
WSS is superimposed onto the composite signals and Y/C signals.
・
PAL, PAL-Nc
The aspect ratio information of WSS is superimposed on line 23 of the first field. The WSS waveform consists of Run-In,
Start Code and the 14-bit data. This waveform and the bit allocation are shown below.
0.5V±5%
0IRE
11.0us±0.25us
Line 23
Run-In
Start Code
14 Data Bits
0
1
13
Bit
27.4us
Video
WSS(Widscreen Signaling)
・
Bit0-3 : Aspect
Bit
0 1 2
3
Aspect
Ratio
Full format or
Letterbox
Position
0 0 0
1
4:3
Full format
Not applicable
1 0 0
0
14:9
Letterbox
Center
0 1 0
0
14:9
Letterbox
Top
1 1 0
1
16:9
Letterbox
Center
0 0 1
0
16:9
Letterbox
Top
1 0 1
1
>16:9
Letterbox
Center
0 1 1
1
14:9
Full format
Center
1 1 1
0
16:9
Full format
Not applicable
Bit3 is the parity bit.
•
Bit4-13: Other service information (not supported by the VG-884)
Summary of Contents for VG-884
Page 1: ...Portable Video Signal Generator VG 884 Instruction Manual Ver 1 00 ...
Page 2: ......
Page 3: ...Portable Video Signal Generator VG 884 Instruction Manual 2012 7 Ver 1 00 ASTRODESIGN Inc ...
Page 4: ......
Page 16: ...xii ...
Page 26: ...10 ...
Page 58: ...42 ...
Page 93: ...Chapter 4 Selecting and Editing Pattern Data 77 ...
Page 96: ...80 ...
Page 99: ...Chapter 4 Selecting and Editing Pattern Data 83 12BIT 0 4095 ...
Page 108: ...92 0 1 2 3 4 5 6 ...
Page 147: ...Chapter 5 Output Settings 131 MENU Display returns to the initial screen ...
Page 161: ...Chapter 5 Output Settings 145 3 4Kx2K 24Hz SMPTE ...
Page 164: ...148 9 16 9 4 3 center ...
Page 166: ...150 3 AdobeYCC601 4 AdobeRGB ...
Page 170: ...154 6 176 4kHz 7 192kHz ...
Page 177: ...Chapter 5 Output Settings 161 2 12bit ...
Page 183: ...Chapter 5 Output Settings 167 1 Advance Cipher Enhanced Link Verification is not supported ...
Page 206: ...190 9 16 9 4 3 center ...
Page 208: ...192 3 AdobeYCC601 4 AdobeRGB ...
Page 211: ...Chapter 5 Output Settings 195 7 192kHz ...
Page 228: ...212 ...
Page 246: ...230 Teletext waveforms ...
Page 270: ...254 ...
Page 290: ...274 Select EXECUTE using or INC DEC and then press SET to erase the user characters ...
Page 304: ...288 ...
Page 351: ...Carter10 Internal data 335 ...
Page 354: ...338 F0H letters me 1 F1H letters me 2 VESA specifications ...
Page 355: ...Carter10 Internal data 339 ...
Page 356: ...340 F2H Chinese character AI F3H Chinese character BI ...
Page 357: ...Carter10 Internal data 341 ...
Page 358: ...342 F4H Chinese character TAKA F5H Chinese character KIRI ...
Page 359: ...Carter10 Internal data 343 ...
Page 360: ...344 F6H Chinese character KEN F7H Burst ...
Page 361: ...Carter10 Internal data 345 ...
Page 362: ...346 10 4 Character pattern data 5 7 character pattern table 1 of 2 ...
Page 363: ...Carter10 Internal data 347 ...
Page 364: ...348 5 7 character pattern table 2 of 2 ...
Page 365: ...Carter10 Internal data 349 7 9 character pattern table 1 of 2 ...
Page 366: ...350 ...
Page 368: ...352 ...
Page 369: ...Carter10 Internal data 353 16 16 character pattern table 1 of 4 ...
Page 370: ...354 ...
Page 371: ...Carter10 Internal data 355 16 16 character pattern table 2 of 4 ...
Page 372: ...356 ...
Page 373: ...Carter10 Internal data 357 16 16 character pattern table 3 of 4 ...
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Page 375: ...Carter10 Internal data 359 16 16 character pattern table 4 of 4 ...
Page 376: ...360 ...
Page 379: ...Chapter10 Internal data 363 Table of TV standard signal timing waveforms 1 of 3 ...
Page 380: ...364 Table of TV standard signal timing waveforms 2 of 3 ...
Page 381: ...Chapter10 Internal data 365 Table of TV standard signal timing waveforms 3 of 3 ...
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