The new technology will going to help your DSLR to automatically calculate the total time that the starts are actually taking to move from one point to another, hence the if you want long exposure shot without star trails in your image, your camera will going to automatically set the prefect exposure time by applying the new patent technology. Canon may implement this technology in upcoming Astrophotography based DSLR (possibly Canon 70Da ?)
Explanation self interpretation of patent literature
Patent Publication No. 2014-179863
Published 2014.9.25
Filing date 2013.3.15
Canon patent
Low sensitivity, I will test taken at the proper exposure
Place the time, to test shooting with the same settings
From the difference of the two test images to detect a movement of the star, and also to calculate the proper exposure time from the mobile width
The production shot with appropriate exposure to the subject of non-star
The production shot with appropriate exposure to star
To obtain the final output image by synthesizing two images production
