Patent ID: 11972053
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A tactile presentation panel, comprising:
a tactile presentation control apparatus that has a tactile presentation knob placed on an operation surface and presents a tactile sense to a user via the tactile presentation knob, the tactile presentation control apparatus including a tactile control circuit that performs control to present different tactile senses to each of a plurality of distinct operation regions on the operation surface when the tactile presentation knob is rotationally operated,
wherein when the tactile presentation knob is present in one of the distinct operation regions, the tactile control circuit performs control to present, as the tactile sense, a frictional force generated in the tactile presentation knob within the distinct operation region; and
a contact position detection circuit that detects a contact position between the tactile presentation knob and the operation surface, wherein
when the contact position detected by the contact position detection circuit is present in one of the distinct operation regions, the tactile control circuit performs control to present, as the tactile sense, a frictional force between the tactile presentation knob and the operation surface within the distinct operation region,
the tactile presentation panel further comprising:
a tactile electrode including a plurality of first electrodes and a plurality of second electrodes provided on the operation surface of the tactile presentation panel;
a dielectric layer coveting the tactile electrode; and
a voltage generation circuit that generates a first voltage signal leaving a first frequency to be applied to at least one of the first electrodes located in at least a partial region on the operation surface, and generates a second voltage signal having a second frequency different from the first frequency to be applied to at least one of the second electrodes located in at least a partial region on the operation surface,
wherein a frictional force between the tactile presentation knob and the operation surface is generated based on the first voltage signal and the second voltage signal generated by the voltage generation circuit,
the tactile presentation panel further comprises a tactile electrode including a plurality of first electrodes and a plurality of second electrodes provided on the operation surface,
the tactile presentation knob includes a conductive elastic portion that presents the tactile sense to the user, and
the frictional force is generated in the tactile presentation knob using an electric field formed in a lateral direction between the first electrodes and the second electrodes via the conductive elastic portion.