Sensor, position detection apparatus, and sensor controller
AssigneeWacom Co., Ltd.
InventorsHayato KURASAWA, Yue MA
Life of this patent
Estimating the term…
Abstract
Provided is a sensor including an outside loop coil having a first end and a second end, where the first end of the outside loop coil is connected to a first output terminal, and an inside loop coil having a first end and a second end, wherein the first end of the inside loop coil is connected to a second output terminal. The second end of the outside loop coil and the first end of the inside loop coil are connected to each other by a bridge conductor that straddles the inside loop coil.
Claims6
A sensor comprising:
- an outside loop coil having a first end and a second end, wherein the first end of the outside loop coil is connected to a first output terminal;
- and
- an inside loop coil having a first end and a second end wherein the second end of the inside loop coil is connected to a second output terminal,
- wherein the second end of the outside loop coil and the first end of the inside loop coil are connected to each other by a bridge conductor that straddles the inside loop coil.
A position detection apparatus comprising:
- a sensor including:
- an outside loop coil having a first end and a second end, wherein the outside loop coil is connected to a first output terminal;
- and
- an inside loop coil having a first end and a second end, wherein the outside loop coil is connected to a second output terminal, and wherein the second end of the outside loop coil and the first end of the inside loop coil are connected to each other by a bridge conductor that straddles the inside loop coil;
- and
- a switch that, in operation, switches between a first state in which the first output terminal and the second output terminal are connected to each other and a second state in which the first output terminal and the second output terminal are respectively connected to a first input terminal and a second input terminal of a same differential amplifier.
A sensor controller for detecting a position of an electromagnetic resonance pen or a passive pointer by using a sensor including an outside loop coil having a first end and a second end, the first end of the outside loop coil being connected to a first output terminal, and an inside loop coil having a first end and a second end, the second end of the inside loop coil being connected to a second output terminal, and the second end of the outside loop coil and a first end of the inside loop coil being connected to each other by a bridge conductor that straddles the inside loop coil, the sensor controller comprising:
- a processor;
- a memory storing instructions that, when executed by the processor, cause a switch to switch between a first state in which the first output terminal and the second output terminal are connected to each other and a second state in which the first output terminal and the second output terminal are respectively connected to a first input terminal and a second input terminal of a same differential amplifier is controlled.
Dependencies are inferred from the claim text.