ELECTRODE ARRANGEMENT FOR A KEYBOARD PROXIMITY AND TRACKING SENSOR
First Claim
1. An apparatus comprising:
- a first electrode to transmit a signal; and
at least one second electrode to receive the signal, wherein;
the first electrode is located on a first level of a keyboard assembly,a second electrode is located on a second level of the keyboard assembly,transmission of the signal is to generate an electric field between the first and second electrodes, the electric field to be generated above the keyboard assembly based on a distance between the first and second electrodes.
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Accused Products
Abstract
A keyboard assembly includes a transmitter electrode and one or more receiver electrodes that are used to generate an electric field above one or more keys of the assembly. The first electrode is located on a first level of a keyboard assembly and the second electrode is located on a second level of the keyboard assembly. The first level may correspond to a support plate of the assembly and the second level may correspond to a surface of a printed circuit board to which the second electrode is coupled. Alternatively, the first and second levels may correspond to different sides of a frame of the keyboard assembly. Disturbances in the electric field may be detected to perform a control operation of a host device that includes or is coupled to the keyboard assembly.
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Citations
22 Claims
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1. An apparatus comprising:
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a first electrode to transmit a signal; and at least one second electrode to receive the signal, wherein; the first electrode is located on a first level of a keyboard assembly, a second electrode is located on a second level of the keyboard assembly, transmission of the signal is to generate an electric field between the first and second electrodes, the electric field to be generated above the keyboard assembly based on a distance between the first and second electrodes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A keyboard assembly comprising:
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at least one key; a first electrode to transmit a signal; and at least one second electrode to receive the signal, wherein; the first electrode located at least partially under the second electrode and at least partially under the at least one key, a second electrode is at the at least one key, and transmission of the signal is to generate an electric field between the first and second electrodes, the electric field to be generated above the keyboard assembly based on a distance between the first and second electrodes. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification