Document security system
First Claim
Patent Images
1. A document monitoring device comprising:
- a plurality of sensors disposed about an area of a structure suitable for placement of one or more documents, each sensor producing a sensor output signal in response to sensing a response signal produced by a document; and
a detection module coupled to receive sensor output signals from said sensors to produce a detection signal indicative of movement of a first document disposed on said structure, wherein a first set of sensor output signals that are produced by a first set of said sensors is associated with a first position of said first document and a second set of sensor output signals that are produced by a second set of said sensors is associated with a second position of said second document, wherein said detection signal is produced based on said first set of sensors and said second set of sensors.
1 Assignment
0 Petitions
Accused Products
Abstract
Document monitoring provides a measure of document security. Documents incorporating radio frequency identification (RFID) tags can be monitored by appropriate interrogation components for movement activity. A surface suitable for placement of documents is configured for monitoring RFID tagged documents. Such documents can be monitored in a document processing device to control access to the document processing functions.
-
Citations
42 Claims
-
1. A document monitoring device comprising:
-
a plurality of sensors disposed about an area of a structure suitable for placement of one or more documents, each sensor producing a sensor output signal in response to sensing a response signal produced by a document; and
a detection module coupled to receive sensor output signals from said sensors to produce a detection signal indicative of movement of a first document disposed on said structure, wherein a first set of sensor output signals that are produced by a first set of said sensors is associated with a first position of said first document and a second set of sensor output signals that are produced by a second set of said sensors is associated with a second position of said second document, wherein said detection signal is produced based on said first set of sensors and said second set of sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
-
-
14. A document monitoring device comprising:
-
an interrogation source to produce an interrogation signal;
a plurality of sensors disposed about an area of a structure suitable for placement of one or more documents, each sensor responsive to proximity of a document by producing a sensor output signal, said document producing a response signal upon exposure to said interrogation signal, said response signal being detectable by one or more of said sensors; and
a detection module coupled to receive sensor output signals from said sensors to produce a detection signal indicative of movement of a first document disposed on said structure. - View Dependent Claims (15, 16, 17, 18)
-
-
19. A method for monitoring a first document disposed atop a surface, said first document having at least one radio frequency identification device (RFID) tag physically associated therewith, the method comprising:
-
in a first period of time, transmitting one or more first interrogation signals and in response thereto receiving one or more first response signals from said RFID tag;
in a second period of time, transmitting one or more second interrogation signals and in response thereto receiving one or more second response signals from said RFID tag; and
based on said first response signals and said second response signals, determining whether a position of said first document has changed between said first period of time and said second period of time. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
-
-
31. Apparatus for monitoring documents having radio frequency identification (RFID) devices physically associated therewith, the apparatus comprising:
-
interrogation means for interrogating an RFID device disposed on a surface of a structure, said RFID producing one or more response signals in response to said interrogating;
sensing means for sensing said response signals at a plurality of locations arranged about said structure; and
detection means for detecting a change in location of said RFID device on said surface based on a first set of response signals and a second set of response signals, wherein said first set of response signals are produced when said RFID device is at a first position and said second set of response signals are produced when said RFID device is at a second position. - View Dependent Claims (32, 33, 34)
-
-
35. In a document processing device, a document monitoring component comprising:
-
at least one interrogation source to produce an interrogation signal;
a plurality of sensors disposed about a document reception area suitable for receiving one or more documents, each sensor responsive to proximity of a document and operable to produce a sensor output signal indicative of said document;
a detection module coupled to receive sensor output signals from said sensors to produce a detection signal indicative of movement of a first document disposed on said structure; and
a recording device operatively coupled to receive said detection signal and to obtain user identification information representative of a user, wherein said document produces a response signal upon exposure to said interrogation signal and said sensors can detect said response signal, wherein a first set of sensor output signals is associated with a first position of said first document and a second set of sensor output signals is associated with a second position of said second document, wherein said detection signal is produced based on said first set of sensor output signals and on said second set of sensor output signals. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
-
Specification