An improved method and apparatus for processing seismic data records is disclosed. Data is normal moveout corrected by an operator providing estimates of velocity of seismic energy in rock layers in the earth. According to the invention, the system provides an immediate display of the seismic data processed...http://www.google.com/patents/US4876673?utm_source=gb-gplus-sharePatent US4876673 - Display of common depth point seismic data with velocity correction in real time