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 For reasons of convenience, we cite to Keagy's issued '969 patent rather than Keagy's unpublished '744 application.Page: Previous 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 NextLast modified: November 3, 2007