Transparent digitiser
AssigneeN-trig Ltd.
InventorsMeir Morag, Haim Perski
Life of this patent
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Abstract
A digitizer for user interaction via an object with an electronically refreshable display screen, the digitizer comprising: a transparent sensing arrangement of detectors located at said electronically refreshable display screen for detecting an electric field of said object, said detectors having outputs, and an arrangement of differential amplifiers associated with said outputs, thereby to apply differential detection between said outputs.
Claims50
A device for user interaction via locating an object in conjunction with an electronically refreshable display screen, the device comprising:
- a transparent arrangement of sensors located over said electronically refreshable display screen for detecting a location of said object, said sensors having outputs, and
- an arrangement of amplifiers for producing differential signals associated with said sensor outputs, said differential signals being signals indicative of a differential between at least two of said outputs and wherein the association between the amplifiers of the arrangement and the sensor outputs is dedicated, said device being operable to use said signals in said interaction.
A digitizer for user interaction with an electronic device having an electronically refreshable display screen, the digitizer comprising:
- a transparent sensing grid located on said electronically refreshable display screen for detecting electronic signals from an object, said grid having a plurality of outputs, and
- an arrangement of amplifiers wherein each amplifier is connected by a dedicated connection over at least two outputs of said sensing grid to produce an output signal being a function of said at least two outputs.
A digitizer for user interaction via an electronically passive object with an electronically refreshable display screen, the digitizer comprising:
- a transparent arrangement of sensors located at said electronically refreshable display screen for detecting an electric field of said object, said sensors having outputs,
- an arrangement of amplifiers associated with said sensor outputs wherein the association between the amplifiers of the arrangement and the sensor outputs is dedicated, and
- an excitation arrangement for generating excitation signals for said passive object to enable said passive object to generate or issue said electric field.
A digitizer for user interaction via an electronically passive object wit an electronically refreshable display screen, the digitizer comprising:
- a transparent arrangement of sensors located at said electronically refreshable display screen for detecting an electric field of said object, said sensors having outputs,
- an arrangement of amplifiers associated with said sensor outputs wherein the association between the amplifiers of the arrangement and the sensor outputs is dedicated, and
- an excitation arrangement for generating and issuing an excitation signal for said passive object to enable said passive object to generate said electric field,
- and wherein said arrangement of amplifiers is controllable, in association with said excitation arrangement, with a blanking period such that said arrangement of amplifiers is prevented from detecting during issuance of said excitation signal.
A digitizer for user interaction via an object with an electronically refreshable display screen, the digitizer comprising:
- a transparent arrangement of sensors located at said electronically refreshable display screen for detecting an electric field of said object, said sensors having outputs, and an arrangement of amplifiers associated with said outputs, each amplifier being connected to outputs of at least two respectively non-neighboring sensors, said respectively non-neighboring sensors per amplifier being selected such that different object positions generate outputs at different combinations of amplifiers, thereby permitting different amplifier combinations to be decoded to individual sensors.
A device for user interaction via object location in conjunction wit an electronically refreshable display screen, comprising:
- a passive electromagnetic stylus;
- a transparent sensing arrangement overlaid on said screen;
- and wherein said transparent sensing arrangement is configured for detecting an electric field of the stylus;
- and an excitation arrangement for generating and issuing an excitation signal for said passive electromagnetic stylus to enable said passive electromagnetic stylus to generate said electric field, wherein said excitation arrangement is dynamically controllable to change a property of said excitation signal and is operable to use a state of said object to set said dynamically controllable property.
A device for user interaction via locating an object in conjunction with an electronically refreshable display screen, the device comprising:
- a transparent arrangement of sensors located over said electronically refreshable display screen for detecting a location of said object, said sensors having outputs, and
- an arrangement of amplifiers for producing differential signals associated with said outputs, said differential signals being signals indicative of a differential between at least two of said outputs, said device being operable to use said signals in said interaction and wherein said arrangement of differential amplifiers comprises a plurality of differential amplifiers each having a first differential input and a second differential input, and wherein said first differential input is connected to an output of a first sensor, and said second differential input is connected to an output of a second sensor wherein the distance between said first and second sensor is larger than an effective range of the signal transmitted by said object.
Dependencies are inferred from the claim text.