Interference No. 104,649
Page No. 8
B. Keagy's '744 Specification
F16. Keagy's '744 application is directed to an apparatus and method for acquiring a high
resolution image of a person's fingerprint. (Keagy '969, col. 1, lines 11 -12).' More particularly,
Kcagy's application is directed to a fingerprint imaging deviceŭthat employs a finger platen that
can be integrated into a card. To create a fingerprint image, a person would insert the card with
the finger platen into the fingerprint imaging device to complete the system. The person would
then place his or her finger on the top surface of the platen and a camera would take a picture of
the fingerprint. (Keagy '969, col. 4, lines 11-24).
F17. Keagy's platen can be of various configurations. A configuration that is said to work
especially well is one having a series of "microprisms" in the form of parallel lines of tiny
triangular shaped ridges. The small "microprisms" are said to allow for the formation of thin and
portable platens as opposed to prior art single prism systems. (Keagy '969, col. 4, lines 25-38).
F18. Keagy '774 claim I requires that light enter a plurality of the entrance surfaces and
incident at the sensing surface and that the light is then "reflected through total internal
reflection." Keagy Figure 5, depicted below, provides a ray diagram that helps explains the
concept of total internal reflection.
'Kcagy's '744 application is a continuation of Keagy's.U.S. Application No. 09/046,418,
now U.S. Patent No. 6,069,969 ( ...969"). Kcagy'744 and Keagy'969 are said to have identical
disclosures. (Zhou Preliminary Motion 3, Paper No. 26, p. 2, fact 2). For reasons of
convenience, we cite to Keagy's issued '969 patent rather than Keagy's unpublished '744
application.
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