Computer system with integratable touchpad/security subsystem
First Claim
1. A personal computer system comprising:
- a processor and a memory connected to one another;
a keyboard connected to said processor; and
a touchpad on said keyboard, said touchpad including a substantially infrared transparent surface, a plurality of sources of infrared light connected to emit at different frequencies or wavelengths on at least some occasions, and a detector of infrared light, said source arranged to direct infrared light through said touchpad surface from below and said detector arranged to detect infrared light reflected from said surface when an object is placed on said surface, said detector connected to said processor such that said processor may analyze information about the object placed on said surface.
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Accused Products
Abstract
A personal computer system includes a touchpad having an infrared source and an infrared detector such that said touchpad may implement an infrared fingerprint security system and/or an infrared touchpad for cursor control. The infrared fingerprint security system may provide information necessary to gain access to peripheral storage media. For example, a peripheral storage medium may have a database which contains information about the fingerprints of authorized users such that the storage medium may only be accessed by authorized users in ways permitted for each particular user as indicated in the storage medium itself. A user may input information through a touch sensitive light pen which generates an infrared beam. The implementation of both a fingerprint security system and a touchpad cursor control with common elements is advantageous since both enhanced capabilities may thereby be provided at a reasonable cost.
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Citations
23 Claims
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1. A personal computer system comprising:
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a processor and a memory connected to one another;
a keyboard connected to said processor; and
a touchpad on said keyboard, said touchpad including a substantially infrared transparent surface, a plurality of sources of infrared light connected to emit at different frequencies or wavelengths on at least some occasions, and a detector of infrared light, said source arranged to direct infrared light through said touchpad surface from below and said detector arranged to detect infrared light reflected from said surface when an object is placed on said surface, said detector connected to said processor such that said processor may analyze information about the object placed on said surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A computer system comprising:
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a sensor capable of sensing both the position of the user'"'"'s finger on a surface and the characteristics of the user'"'"'s fingerprint;
a cursor control for controlling the position of a cursor, said cursor control connected to said sensor for receiving information about the location of the user'"'"'s finger on said surface, and a fingerprint analyzer connected to said sensor for receiving information about the characteristics of the user'"'"'s fingerprints;
wherein multiple frequencies or wavelengths are used when said sensor is used for detection of position, but not when said sensor is used for receiving information about the characteristics of the user'"'"'s fingerprint. - View Dependent Claims (16, 17, 18)
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19. A method of inputting information to a computer system comprising the steps of:
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producing infrared light;
causing said infrared light to be reflected from a user'"'"'s finger positioned on a surface;
analyzing the reflected infrared light to determine the location on said surface of the user'"'"'s finger and the characteristics of the user'"'"'s fingerprint;
controlling the position of a cursor on a display screen based on the finger location information; and
controlling access to said computer system based on the fingerprint information;
wherein said infrared light is selectively produced in either a single wavelength when the characteristics of a fingerprint are being analyzed, or in multiple wavelengths when determining the location of the finger. - View Dependent Claims (20, 21, 22, 23)
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Specification