Sony delays PS3 to 2006, concentrates on PSP !?

[maskrider]

But isn't s-video like 4 pins? VGA is ~9 or so? Dunno if that actually matters, but its a difference nonetheless

S-Video 4 pin - Y, Y ground, C, C ground

VGA 9 pin (and 11 pins) - R, R ground, G, G ground, B, B ground, H.Sync, V.Sync, Sync ground (and 2 more pins for display data channel - DDC SDA and DDC SCL)

Some devices actually have all ground pins shorted together.

 

[darkblu]

But isn't s-video like 4 pins? VGA is ~9 or so? Dunno if that actually matters, but its a difference nonetheless

IIRC, s-video has the master sync mixed together with the luminance, plus has the two chrominances mixed together, whereas VGA has all signals separate, incl a h- and v-sync. nevertheless, the quality of *those* VGA swith-boxes i mentioned was *exponentially* worse than the DC's A/V connector, and whereas the latter has to cope with [ed]vertical scan[/ed] freqs as high as 31kHz (for the scart/VGA), those boxes had to cope with, well, way higher rates.

 

[darkblu]

But there are 5 signal channels in the VGA switch box. I have some cheapo switch box which use short unshielded wires (those ribbon cables) inside the box. They cause blurriness even at 800x600x75Hz.

well, from the interference POV having more signals running side-by-side, unshielded and w/o any twisting of the cables (as they do that in those cheapo switch boxes) is even worse than if the signal was just 'crammed' into Y + C (as the chrominaces and the Y-mixed sync are relatvely safely segregated). point is, those switch boxes behave more-or-less properly to throughputs as high as 800x600x75

For S-Video, the Y channel also have to carry the composite sync. In my experience, even with interlaced NTSC (under 8MHz), many S-Video cables are already causing loss of details comparing to some decent ones with a decent display. Cables with uneven propagation delay will cause luma/chroma delay.

the sync in the luminance is nothing to worry about, i believe. OTH, the concern about the uneven propagations is quite valid, but IMHO one of those afore-mentioned VGA shitch boxes exhibits this problem to a much grater extent than the average s-video cable you could buy from the nearest radioshack.

 

[maskrider]

well, from the interference POV having more signals running side-by-side, unshielded and w/o any twisting of the cables (as they do that in those cheapo switch boxes) is even worse than if the signal was just 'crammed' into Y + C (as the chrominaces and the Y-mixed sync are relatvely safely segregated). point is, those switch boxes behave more-or-less properly to throughputs as high as 800x600x75

Those super cheap boxes from China are like that, with normal (also cheapo) VGA cables, even at 800x600x75 (47KHz horizontal scanning rate), it is not quite acceptable unless the display is not sharp itself.

the sync in the luminance is nothing to worry about, i believe. OTH, the concern about the uneven propagations is quite valid, but IMHO one of those afore-mentioned VGA shitch boxes exhibits this problem to a much grater extent than the average s-video cable you could buy from the nearest radioshack.

Sure the sync is not the cause of the bluriness, it is the bandwidth and the impedence of the cable that is causing lost of details and signal attenuation. Luma/chroma shift will normally be undetected unless the cable length is long or the devices themselves have luma/chroma delay problem.

Looks like I have gone too far from the topic, better stop.

 

[London Geezer]

Looks like I have gone too far from the topic, better stop.

yeah THANKS... j/k