The Sony HDR-CX190 has a Digital image stabiliser which is better than the Optical image stabiliser found on most video cameras of this type and age. Some compact cameras have digital Image stabilisation only, which simply boosts camera sensitivity (ISO) to obtain a faster shutter speeds to help prevent blur. No hardware is involved.
A Digital image stabiliser is in fact the worst image stabiliser type amongst all comparable spec camcorders that came out more than two years ago.
The best image stabiliser type across comparable types of video camera is Optical.