Patent ID: 7889406

Claim:
A method to align the read channel portion of a holographic data storage system, comprising the steps of: supplying a holographic data storage system comprising a light source, a stored read reference orientation image, a tangential matched filter, a first rotated matched filter, a second rotated matched filter and an optical detector; providing a holographic data storage medium encoded with said read reference orientation image; providing a reference beam; establishing a read threshold correlation factor; illuminating said encoded holographic data storage medium with said reference beam to generate a read channel alignment data beam comprising a projected read reference orientation image; projecting said read channel alignment data beam onto said optical detector; calculating a first read correlation factor using said projected read reference orientation image, said stored read reference orientation image, and said tangential matched filter; determining if said first read correlation factor is greater than or equal to said read threshold correlation factor; operative if said first read correlation factor is greater than or equal to said read threshold correlation factor, determining that said read channel portion is aligned.