A smart pen including: a body part; a nib part at an end of the body part; a code detection unit for receiving light reflected from a display panel and the nib part, wherein the light reflected from the display panel and the nib part is used to detect shape data for code patterns of the display panel; and a code processor for generating coordinate data based on the shape data and transmitting the coordinate data to a main processor for driving the display panel based on the coordinate data.

A position detection device includes a position detection sensor and selection circuitry. The position detection sensor has first loop electrodes arranged in a first direction and second loop electrodes arranged in a second direction perpendicular to the first direction. The selection circuitry is coupled to the first loop electrodes of the position detection sensor and, in operation, simultaneously selects two of the first loop electrodes, connects a first terminal of each of the two of the first loop electrodes to a first one of two first common terminals, and connects a second terminal of each of the two of first loop electrodes to a second one of the two first common terminals. The two of the first loop electrodes change sequentially over time from a first two of the plurality of first loop electrodes to a last two of the plurality of first loop electrodes.

A coordinate calibrating method includes the steps of: (1) reading paper coordinates by adopting two OID sensors, comparing the coordinates read by the two OID sensors with pre-designed coordinates of paper to obtain coordinate deviation of positions of the two OID sensors, and according to the coordinate deviation, calculating an inclination angle value θ generated by the coordinates of the two OID sensors; and (2) according to the coordinate deviation and the inclination angle value, calibrating an actually read coordinate position of a pen by selecting the second OID sensor as a reference point, translating horizontally and vertically coordinates of the pen to be corrected first, and then rotating the coordinates by the angle θ with reference to the second OID sensor, so that the positions of the two OID sensors coincide with pre-designed standard positions, and the coordinate position of the pen is calibrated.

Disclosed is a multi-view fast photographing device for horny jaws of cephalopods. The device includes a cover, a cover pin, a stylus, an image generating device, a data display device, and an image acquisition and processing device; a top of the image generating device is open and provided with mounting holes, and the cover is connected with the mounting holes through the cover pin and movably covers the top of the image generating device. The image acquisition and processing device is fixed at a bottom of the image generating device. The data display device is fastened to a front side wall of the image generating device. A magnetic patch is fixed on a front surface of a baffle of the data display device. The stylus is magnetically attracted to the magnetic patch.

This electronic device may comprise: a flexible display; a first rolling actuator configured to extend the flexible display in a first direction; a second rolling actuator configured to extend the flexible display in a second direction opposite to the first direction; and at least one processor. The at least one processor may be configured to: determine the mounting state of the electronic device; acquire information about the position of a peripheral device, which is linked with the electronic device, based on the mounting state satisfying a designated condition; set the extension direction of the flexible display on the basis of the information about the position of the peripheral device; and control the first rolling actuator and/or the second rolling actuator to extend the flexible display in the first direction and/or the second direction on the basis of the set extension direction.

An electronic device may include: a first communication circuit for connecting first communication with a remote input device positioned in the electronic device; a second communication circuit for connecting second communication with an external display device; a wireless charging coil for sensing a change in a magnetic field signal of a remote input device, and outputting an electrical signal according to the change in a magnetic field signal; and a processor electrically connected to the first communication circuit, the second communication circuit, and the wireless charging coil, wherein the processor determines detachment of the electronic device of a remote input device, receives, through wireless communication, a button input signal of the remote input device and sensor data of the remote input device, and can activate one from among a plurality of interactions on the basis of the button input signal and/or the sensor data.

In one embodiment, a stylus with one or more electrodes and one or more computer-readable non-transitory storage media embodying logic for transmitting signals wirelessly to a device through a touch sensor of the device has one or more sensors for detecting movement of the stylus.

A touch sensor detector system and method incorporating an interpolated sensor array is disclosed. The system and method utilize a touch sensor array (TSA) configured to detect proximity/contact/pressure (PCP) via a variable impedance array (VIA) electrically coupling interlinked impedance columns (IIC) coupled to an array column driver (ACD), and interlinked impedance rows (IIR) coupled to an array row sensor (ARS). The ACD is configured to select the IIC based on a column switching register (CSR) and electrically drive the IIC using a column driving source (CDS). The VIA conveys current from the driven IIC to the IIC sensed by the ARS. The ARS selects the IIR within the TSA and electrically senses the IIR state based on a row switching register (RSR). Interpolation of ARS sensed current/voltage allows accurate detection of TSA PCP and/or spatial location.

During control of a user interface via free-space motions of a hand or other suitable control object, switching between control modes can be facilitated by tracking the control object's movements relative to, and its contact with a “virtual touch plane or surface” (i.e., a plane, portion of a plane, and/or surface computationally defined in space, or corresponding to any physical surface).

Some embodiments of the present disclosure provide a signal processing system, a chip and an active stylus. The signal processing system includes: a pre-amplifier circuit, configured to pre-amplify a received DSSS signal and output a pre-amplified DSSS signal; a low-pass filter circuit, configured to filter the pre-amplified DSSS signal and output a filtered DSSS signal; an analog-to-digital converter circuit, configured to sample the filtered DSSS signal and output a sampled DSSS signal; a noise detecting and filtering-out circuit, configured to filter out a noise in the sampled DSSS signal and output a noise-filtered DSSS signal; and a digital demodulation circuit, configured to demodulate the noise-filtered DSSS signal to output a demodulated signal. The signal processing system can have strong anti-interference ability and high sensitivity through the noise detecting and filtering-out circuit and automatically controlling a gain of the pre-amplifier circuit.