Secured access using a coordinate system
AssigneeAnoto AB
InventorsChrister Fåhraeus, Petter Ericson, Sven Olof Karlsson
Life of this patent
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Abstract
A system and method are disclosed for controlling access to an access-protected unit. A pair of coordinates may be read from a base, such as a card, using a digital pen. The system may then check if the pair of coordinates are within a coordinate area belonging to an authorized user. If so, access may be granted to the authorized user to the access-protected unit or to specific programs or functions of the access-protected unit.
Claims66
A method for controlling access to an access protected unit, the method comprising:
- reading at least one pair of absolute coordinates from an encoded base;
- checking if the pair of coordinates are within a coordinate area belonging to an authorized user;
- and
- granting access by the authorized user to the access protected unit if the coordinates are within the coordinate area belonging to the authorized user, otherwise denying access;
- and wherein reading at least one pair of absolute coordinates from an encoded based includes recording a pattern from the base with a digital pen, and converting the recorded pattern into a pair of coordinates.
A system for controlling a user's access to an access protected unit, comprising:
- a user unit for reading at least one pair of absolute coordinates;
- and
- a checking device which determines whether the at least one pair of coordinates are associated with at least one coordinate area belonging to an authorized user for authorizing access to the access-protected unit, and providing an enabling signal to the access protected unit when the checking device determines that access is authorized, wherein the user unit is further operable to read a sequence of coordinate pairs which describe displacement of the user unit when a user is writing with the user unit.
A checking device for checking a user's access to an access protected unit, the checking device comprising:
- memory for storing information about at least one coordinate area;
- and a processor operative to:
- receive at least one pair of absolute coordinates;
- determine whether the at least one pair of coordinates are associated with the stored information for authorizing access to the access-protected unit;
- provide an enabling signal to the access-protected unit if the processor determines that access is authorized;
- read an identification code from a digital pen;
- check if the identification code from the digital pen corresponds to an authorized identification code;
- and grant access by the user to the access protected unit if the identification code from the digital pen corresponds to the authorized identification code.
A computer-readable medium containing instructions for controlling access to an access protected unit, the instructions comprising:
- reading at least one pair of absolute coordinates from a base;
- checking if the pair of coordinates are within a coordinate area belonging to an authorized user;
- and granting access by the authorized user to the access protected unit if the coordinates are within the coordinate area belonging to the authorized user, otherwise denying access;
- and
- wherein reading the at least one pair of coordinates includes recording a pattern from the base with a digital pen, and converting the pattern into a pair of coordinates.
A base for controlling access to an access protected unit;
- comprising;
- a substrate;
- a writing field associated with the substrate;
- and
- a position coding pattern associated with the writing field, wherein the position coding pattern encodes at least one pair of absolute coordinate positions used to grant access authorization, whereby the position coding pattern is read during an unformatted displacement of a user unit over the writing field, and wherein the user unit is configured to convert the position coding pattern to the at least one pair of coordinates.
A method for controlling access to an access protected unit, comprising:
- providing a position coding pattern associated with a writing field coupled to a base, wherein the position coding pattern encodes at least one pair of absolute coordinate positions used to grant access authorization;
- moving a user unit in an unformatted manner in proximity to the writing field;
- reading the position coding pattern during the moving;
- converting the position coding pattern to the at least one pair of coordinates;
- and
- granting access to an access protected unit based upon the at least one pair of coordinates.
Dependencies are inferred from the claim text.