Abstract: An electronic device capable of efficiently recognizing a handwritten character is provided. The electronic device includes a first circuit, a display portion, and a touch sensor. The first circuit includes a neural network. The display portion includes a flexible display. The touch sensor has the function of outputting an input handwritten character as image information to the first circuit. The first circuit has the function of analyzing the image information and converting the image information into character information, and a function of displaying an image including the character information on the display portion. The analysis is performed by inference through the use of the neural network.

Abstract: A semiconductor device that tests and/or monitors each of batteries provided in an assembled battery is provided. The semiconductor device includes a hysteresis comparator and a circuit, and the circuit has a function of setting a high-level side threshold voltage and a low-level side voltage of the hysteresis comparator. The circuit includes first and second capacitors. A first terminal of the first capacitor is electrically connected to a high-level side reference potential input terminal of the hysteresis comparator and a first terminal of the second capacitor is electrically connected to a low-level side reference potential input terminal of the hysteresis comparator.

Abstract: A novel display is provided. A display having a small change in chromaticity of a micro light-emitting diode in proportion to current density is provided. A display capable of reducing power consumption in the driver circuit when displaying a still image is provided. The display includes a plurality of pixels each including a display element and a microcontroller. The microcontroller includes a first transistor, a triangular wave generator circuit, a comparator, a switch, and a constant current circuit. The first transistor has a function of retaining a potential corresponding to data written to the pixel by being switched off. The triangular wave generator circuit has a function of generating a triangular wave signal. The comparator has a function of generating an output signal corresponding to the potential and the triangular wave signal.

Abstract: An information processing apparatus according to an embodiment of the present technology includes a display control section. The display control section performs, when a display size of a plurality of virtual objects is changed, a notification regarding switching of a change mode of the display size of a specific virtual object among the plurality of virtual objects on the basis of display size change information set for the specific virtual object. This makes it possible to exhibit a high degree of usability to display the virtual objects.

Abstract: A semiconductor device with reduced power consumption is provided. The semiconductor device includes a node ND1, a node ND2, a resistor, a capacitor, and a comparison circuit. The resistor is electrically connected in series between one of a positive electrode and a negative electrode of a secondary battery and a first terminal. The resistor has a function of converting current flowing between the one of the positive electrode and the negative electrode of the secondary battery and the first terminal into a first voltage. The first voltage is added to a voltage of the node ND2 through the capacitor. The comparison circuit has a function of comparing a voltage of the node ND1 and the voltage of the node ND2. The comparison circuit outputs a signal that notifies detection of overcurrent when the voltage of the node ND2 is higher than the voltage of the node ND1.

Abstract: An object of the present invention is to provide a display device with high display quality. The display device of the present invention includes a pixel and a source driver circuit. The pixel includes first and second transistors (21, 22), a capacitor (25), and a display element (26). The source driver circuit is electrically connected to first and second wirings (31, 32). The first wiring (31) is electrically connected to one electrode of the capacitor 25 and one electrode of the display element (26) through the first transistor (21). The second wiring (32) is electrically connected to the other electrode of the capacitor (25) and the other electrode of the display element (26) through the second transistor (22).

Abstract: There is provided an information processing apparatus including a signal generation unit, a first determination unit, and a second determination unit. The signal generation unit processes an output of a sensor unit attached to a detection target, and generates a trigger signal at a time when a state change of the detection target is detected. The first determination unit is brought out of hibernation and activated when receiving the trigger signal, determines the state change of the detection target from the output of the sensor unit by a first determination criterion, and outputs a determination impossibility signal in a case where the determination is impossible. The second determination unit is brought out of hibernation and activated when receiving the determination impossibility signal, and determines the state change of the detection target from the output of the sensor unit by a second determination criterion different from the first determination criterion.

Abstract: A power supply circuit with a novel structure is provided.

Abstract: A display device with excellent visibility can be provided. The display device includes a display region displayed by a light-emitting element. In the display region, a point touched by a user is a first point, a point which has been touched by the user prior to the first point is a second point, a vector that starts at the first point and ends at the second point is a first vector, a vector obtained by multiplying the first vector by k (k is a real number) is a second vector, and a point that is the second vector away from the first point is a third point, the display region includes a first region and a second region obtained by excluding the first region from the display region, The first region includes a first circle and a second circle, the center of the first circle is the first point, and the center of the second circle is the third point. The luminance in the first region is higher than the luminance in the second region.

Abstract: An information processing device (100) includes an acquisition unit (131) that acquires related information related to video, a specification unit (134a) that, on the basis of the related information acquired by the acquisition unit (131) and video corresponding to a first viewpoint, specifies a second viewpoint different from the first viewpoint, and a display unit (134) that, together with video corresponding to the second viewpoint specified by the specification unit (134a), causes the related information acquired by the acquisition unit (131) to be displayed.

Abstract: A battery control circuit with a novel structure, a battery protection circuit with a novel structure, and a power storage device including either of the battery circuits are provided. The power storage device includes a first circuit portion, a second circuit portion, a third circuit portion, and a secondary battery; the first circuit portion has a function of controlling charging of the secondary battery; the first circuit portion has a function of supplying the start time and the end time of the charging of the secondary battery to the third circuit portion; the second circuit portion has functions of generating a first voltage and a first current and supplying them to the third circuit portion; the third circuit portion has a function of generating a second voltage by charging the first current in a capacitor; and the third circuit portion has a function of comparing the first voltage and the second voltage.

Abstract: A semiconductor device capable of level shifting in a negative potential direction using an n-channel transistor is provided. The semiconductor device includes a first source follower, a second source follower, and a comparator. The first source follower is supplied with a second high power supply potential and a low power supply potential; the second source follower is supplied with a first high power supply potential and the low power supply potential; and a digital signal which expresses a high level or a low level using the second high power supply potential or the first high power supply potential is input to the first source follower. Here, the second high power supply potential is a potential higher than the first high power supply potential, and the first high power supply potential is a potential higher than the low power supply potential.

Abstract: The safety is ensured in such a manner that with an abnormality detection system of a secondary battery, abnormality of a secondary battery is detected, for example, a phenomenon that lowers the safety of the secondary battery is detected early, and a user is warned or the use of the secondary battery is stopped. The abnormality detection system of the secondary battery determines whether the temperature of the secondary battery is within a temperature range in which normal operation can be performed on the basis of temperature data obtained with a temperature sensor. In the case where the temperature of the secondary battery is high, a cooling device is driven by a control signal from the abnormality detection system of the secondary battery. The abnormality detection system of the secondary battery includes at least a memory means. The memory means has a function of holding an analog signal and includes a transistor using an oxide semiconductor for a semiconductor layer.

Abstract: A wavelength-tunable light source device includes: a wavelength-tunable laser element including: a laser resonator having two reflecting mirrors having respective periodic peaks of reflection spectrums with respect to wavelength, cycles of the periodic peaks being different from each other; a gain unit in the laser resonator; and a plurality of control elements that control respective laser emission wavelengths in response to electric power supplied thereto; and a control unit that controls the electric power supplied to the control elements. Further, the control elements set, on a basis of the electric power, respective at least wavelength positions where the reflection spectrums of the two reflecting mirrors peak, and the control unit controls the control elements by setting, as sequential control targets, wavelength corresponding control set values, which correspond to discrete intermediate wavelengths between a current laser emission wavelength and a target wavelength.

Abstract: A battery management circuit with a novel structure and a power storage device including the battery management circuit are provided. The power storage device includes a plurality of battery cells connected in series and a battery management circuit. The battery management circuit includes a voltage monitor circuit having a function of acquiring a voltage value between a pair of electrodes of any one of the battery cells. The voltage monitor circuit includes a multiplexer and a buffer circuit for outputting a signal for controlling the multiplexer. The multiplexer and the buffer circuit each include an n-channel transistor. The n-channel transistor is a transistor including an oxide semiconductor in a channel formation region. The multiplexer has a function of retaining an output voltage of the battery cell by setting the transistor in an off state.

Abstract: Provided is a display device or a display system capable of displaying images along a curved surface, a display device or a display system capable of displaying images seamlessly in the form of a ring, or a display device or a display system that is suitable for increasing in size. The display device includes a display panel. The display panel includes a first part and a second part and is flexible. The first part can display images. The second part can transmit visible light. The display panel is curved so that the second part and the first part overlap with each other.

Abstract: A pulse generating device of an in-vehicle radar configured to output a high frequency pulse including a main lobe and a side lobe includes a high frequency oscillator that generates a carrier wave of a predetermined frequency, an output variable device that adjusts an output of the high frequency oscillator, a power measuring unit that measures the output of the high frequency oscillator, a temperature measuring unit that measures an ambient temperature, a baseband pulse generating unit that generates a signal of a pulse shape, and a modulator that modulates the output of the high frequency oscillator with the signal of the pulse shape, and, when the ambient temperature is a first threshold value or less, the output or the pulse shape is adjusted so that the side lobe is a predetermined output or less.

Abstract: A mechanism that enables the real-time provision of content according to a user's body movement is provided. An information processing apparatus includes a reproduction control unit (43) that controls reproduction of content on the basis of a result of prediction of a timing of a predetermined state in traveling movement of a user, which is predicted on the basis of sensor information regarding the traveling movement.

Abstract: A novel display device where a light-emitting element is turned on by a triangle wave is provided. One embodiment of the present invention is a method for driving a display device including a first pixel, a second pixel, a first wiring, a second wiring, and a third wiring. The first wiring is electrically connected to the first pixel and the second pixel. The second wiring and the third wiring are electrically connected to the first pixel and the second pixel, respectively. At a first time, the first pixel reaches the maximum luminance corresponding to first display data and the second pixel reaches the maximum luminance corresponding to second display data. The first pixel and the second pixel are initialized at a second time different from the first time by input of a reset signal to the first wiring to stop light emission.

Abstract: A display device that can display a high-luminance image is provided. The display device includes a display element and a memory circuit which is electrically connected to a first wiring and a second wiring. First, a reference potential is supplied to the first wiring. Next, a first image signal is supplied to the memory circuit through the second wiring. Then, the second image signal is added to the first image signal by supplying the second image signal to the memory circuit through the first wiring. After that, an image obtained by superimposing an image corresponding to the first image signal and an image corresponding to the second image signal on each other is displayed with the display element.