Video content expert witness Robert Schumann currently holds 13 issued and 11 pending US patents with many having foreign equivalents. These patents cover a broad range of technologies including digital watermarking, forensic watermarking, digital video analysis, digital video processing, digital video compression, digital video display, real-time systems, transaction processing, operating systems, and file management as well as DMCA technologies such as content encryption, key management, content protection, and anti-tamper technologies.