IDENTIFICATION MAP Russian patent published in 1995 - IPC

FIELD: automatics, computer engineering. SUBSTANCE: identification map is meant for storage of digital data registered in holographic form. It has base 1 with window transparent for reading emission and film information medium 3. Medium 3 is manufactured in the form of hologram medium with holes perforated over edges. Base 1 has through channel 2 with flat plugs 4 on edges of pair of holes within limits of window. Dimensions of channel 2 allows medium 3 to be moved within specified limits. Holes made in base 1 match perforated holes of medium but have bigger sizes. EFFECT: increased precision of positioning of holograms, reduced requirements to accuracy of manufacture of holograms and of its elements. 3 cl, 3 dwg