Touchscreen display with monitoring functions
AssigneeBarco N.V.
InventorsJurgen Ooghe, Bart Cappaert
Life of this patent
Estimating the term…
Abstract
A touchscreen display system that has a touchscreen display having an active area and an user-input area, a touchscreen controller and an auxiliary controller. The active area and the user-input area are connected to the touchscreen controller and to the auxiliary controller, where a part of the active area has at least one test area allocated for test operations. Instructions are provided to assert the test areas to states of validated touches, a response signal is provided relating to the coordinates corresponding to the validated touches, and the signal is compared with the initial instruction.
Claims19
A touchscreen display system having a touchscreen display comprising an active area and an user-input area, a touchscreen controller and an auxiliary controller,
- the active area and the user-input area being connected to the touchscreen controller,
- wherein a part of the active area comprises at least one test area allocated for test operations, said at least one test area being outside or inside of the user-input area, the touchscreen display system being adapted to provide an instruction to assert the at least one test area to a state of a validated touch and comprising means for determining congruency between first information relating to an asserted test area and second information derivable from a response of the at least one test area,
- wherein if said at least one test area is inside the user-input area, the means for determining congruency between the first and second information is further adapted to measure the touch duration,
- wherein the auxiliary controller is adapted to provide the instruction to assert the at least one test area to a state of the validated touch, the touchscreen controller is adapted to receive said instruction and to provide a response signal or coordinates corresponding to the validated touch, wherein said response signal or said corresponding coordinates are sent to the auxiliary controller which is adapted to compare directly or indirectly the response signal with initial information used to assert the at least one test area or to compare directly or indirectly the corresponding coordinates with the coordinates of the initially asserted test area.
A method for testing a touchscreen display system having a touchscreen comprising an active area, a user-touch input area and test areas, said test areas being outside or inside the user-input area, the touchscreen display system further having a touchscreen controller and an auxiliary controller, the active area being coupled or connected to the touchscreen controller and to the auxiliary controller, the method comprising the steps of:
- providing an instruction to assert the test areas to states of validated touches,
- providing a response signal that corresponds to the validated touches or coordinates corresponding to the validated touches, and
- comparing the response signal directly or indirectly with initial instructions used to assert the test areas or comparing directly or indirectly the corresponding coordinates with coordinates of initially asserted test areas,
- wherein if said test area is inside the user-input area, the step of comparing the response signal or the coordinates further comprises the step of measuring the touch duration,
- wherein the auxiliary controller provides an instruction to assert a test area to a state of the validated touch, wherein said response signal or said corresponding coordinates are sent to the auxiliary controller which is adapted to compare directly or indirectly the response signal with the initial information used to assert the test areas or to compare directly or indirectly the corresponding coordinates with the coordinates of the initially asserted test areas.
A touchscreen display system having a touchscreen comprising an active area and a user-touch input area and test areas, said test areas being outside or inside the user-input area, comprising:
- an auxiliary controller for providing an instruction to assert the test areas to a state of a validated touch;
- and
- a touchscreen controller for providing a response signal corresponding to the validated touch or providing coordinates corresponding to the validated touch, and
- a compare unit for comparing the response signal directly or indirectly with initial information used for asserting the state or comparing directly or indirectly the corresponding coordinates with coordinates of an initially asserted test area, wherein if said test area is inside the user-input area, the step of comparing the response signal or the coordinates further comprises the step of measuring the touch duration, and wherein the compare unit is external to the touchscreen display system.
A touchscreen display system having a touchscreen display comprising an active area and an user-input area, a touchscreen controller and an auxiliary controller, the active area and the user-input area being connected to the touchscreen controller, wherein a part of the active area comprises at least one test area allocated for test operations, said test area being outside or inside of the user-input area, the touchscreen display system being adapted to provide an instruction to assert the at least one test area to a state of validated touch and comprising means for determining congruency between first information relating to an asserted test area and second information derivable from a response of the at least one test area, wherein if said test area is inside the user-input area, the means for determining congruency between the first and second information is further adapted to measure the touch wherein a valid touch/release is simulated selected from connecting/disconnecting the at least one test area to/from ground and connecting/disconnecting the at least one test area to/from to a constant potential reference, further comprising a switch connecting the at least one test area to ground through an adjustable impedance, wherein the adjustable impedance is a plurality of impedances with different values, and the switch is adapted to select one of these impedances.
Dependencies are inferred from the claim text.