The speed at which these liquid crystal molecules rotate is relatively slow, below the image refresh rate.
Electrically, it "steps on the gas" in order to get to the right speed quickly, then eases off as it approaches the desired performance level.
An individual inventor (Robert Hotto) patented Overdrive whose company "Positive Technologies" owned the rights to it.
[1] The technology was copied by many of the large LCD companies and renamed to avoid paying royalties.
The ownership issues were eventually settled in a lawsuit[2] with the defendants agreeing to pay royalties to Positive Technologies.