Yes, the TALK-7190 and TALK-7191 are the same camera. This camera is compatible with Skype ready: Sharp TVs, Phillips Blue-Ray and select models Toshiba and Elite Brand TVs.
The model number for this camera has been updated from 7190 to 7191. Model #7190 may be found on certain packaging and on cameras produced prior to this update, however the camera is the same. The camera itself has not been altered.