PowerBook 145B LCD video output format?

[PotatoFi]

I'm investigating alternative uses for the PowerBook 145. It's well-documented that these don't have their own way to output video, but I got to thinking about pulling video from the LCD output. Do we know anything about the video format or protocol that the 140/145/145B uses to talk to the Sharp LCD over the flex cable?

 

[This Does Not Compute]

I know LVDS was a common protocol for laptop displays before DisplayPort took over, but can't remember if it's old enough for the early PowerBooks to have used.

 

[Kai Robinson]

It's a straight up parallel interface, either 6 or 8 bit depending on the colour depth and if it's active or passive matrix. @3lectr1c may be the person for this though.

 

[PotatoFi]

Thanks @Kai Robinson, that's a good lead. Do you know of any devices that are meant to work with a parallel video interface like that, or any specs I can look at? I'm not turning up very much when I Google this stuff.

Related, I found a schematic for the PowerBook 140, which might be helpful.

 

[3lectr1c]

It's a straight up parallel interface, either 6 or 8 bit depending on the colour depth and if it's active or passive matrix. @3lectr1c may be the person for this though.

I don't know for sure here unfortunately, but I do know that parallel was the standard around this time. LVDS didn't come around till....late 90s?