Patent ID: 6668071
Filing Date: 2003-12-23
Classification: G06K

Abstract:
A method for user identification by penetrating light comprising the steps of:(a) placing a user's finger on an entry surface of a video camera; (b) diaphaning the user's finger with penetrating and pulsating light; (c) generating an image signal of a portion of the user's finger placed on said entry surface of the video camera; and (d) processing an the generated image signal-transmitted from the video camera; identifying biometric information about the user's pulse by receiving more than one successive frame of the image signal from the video camera; determining an average value of the image signal in at least a part of every frame; and using a time function of the determined average signal as a user identification criterion, wherein: the user's finger is illuminated by said penetrating and pulsating light as the video camera accumulates the an image of a fingerprint of the user's finger in a picture formation mode.