Patent ID: 8917646
Filing Date: 2014-12-23
Classification: H04L,H04N

Abstract:
1. A method of recording video content by a digital video recorder (DVR), the method comprising: the DVR recording the video content provided from a content provider to produce recorded video content; the DVR computing a checksum corresponding to the recorded video content; the DVR determining that the recorded video content has been corrupted by a power outage by comparing a recording list of the DVR against a last known time the DVR was operational before a most recent startup of the DVR and by comparing a checksum received from the content provider with the computed checksum; the DVR determining a region of the recorded video content that is corrupted as occurring at the time period extending from the last known time the DVR was operational to a time at which the DVR resumed recording after the most recent startup of the DVR and by comparing a first rolling checksum computed on the region of the recorded video content to a rolling checksum computed on the region of the recorded video content and received from the content provider; and the DVR replacing the region of the recorded video content.