Abstract: A wireless communication chip includes an amplifier stage, a first radio frequency circuit, and a second radio frequency circuit. The amplifier stage is configured to receive and amplify a radio frequency signal. The first radio frequency circuit includes a mixer, a baseband transconductor, an output stage, and a switch unit. The mixer is configured to receive an oscillation signal and the radio frequency signal from the amplifier stage, and is configured to adjust a frequency of the radio frequency signal based on the oscillation signal. The switch unit is electrically connected between an input terminal of the baseband transconductor and an output terminal of the baseband transconductor. The first radio frequency circuit and the second radio frequency circuit support different wireless transmission technologies, and are jointly coupled to an output terminal of the amplifier stage.

Abstract: Embodiments of the present application relate to the field of electrical switching technologies, and provide a switch unit and a switching device. The switch unit includes at least one stationary contact assembly. Each stationary contact assembly includes a first stationary contact, a second stationary contact, and a first pin connected to the first stationary contact. The first pin is welded to a circuit board. This can reduce a quantity of contact connections, simplify a connection manner, and improve safety during use.

Abstract: The present invention discloses a variable gain amplifier circuit having linearity compensation mechanism is provided. A lower amplification transistor of a lower branch of an amplification circuit is controlled by an AC input signal. Upper amplification transistors of an upper branch generate an AC output signal at an amplification output terminal. An amplification control circuit controls the turn-on and turn-off of the upper amplification transistor according to an amplification control voltage. An inductor is electrically coupled between a power supply terminal and the amplification output terminal. In a gain adjustment circuit, each of adjustment control circuits controls the turn-on and turn-off of each of adjustment transistors according to a adjustment control voltage. A first voltage adjustment circuit adjusts an impedance of each of the adjustment transistors to further adjust an AC cross voltage relation between the lower amplification transistor and the upper amplification transistors.

Abstract: An early assistive diagnosis system of ADHD provides a test to the subject and uses a brain-computer interface (BCI) to detect the electroencephalography (EEG) signals of subject. A host receives the EEG signals, captures the features associated with ADHD heterogeneities, obtains feature EEG signals, and classifies the subject as typical development or ADHD, then uses the EEG feature signals to train a predicted index score range for the heterogeneities of ADHD. The test scores of a new subject is tested, it is compared whether the scores fall within the predicted index score range to determine the ADHD heterogeneity types to which the new subject belongs. Thus, the present invention uses attention tests for ADHD in combination with EEG signals to assess symptoms of a subject, further predicts the potential aptitude of a subject for ADHD and provides objective assistive diagnosis to physicians.

Abstract: An inductor device includes a first inductor, a second inductor, and at least one switch circuit. The second inductor is arranged to enclose the first inductor, and use a topmost layer metal to resist external interference for the first inductor. The at least one switch circuit is coupled to the second inductor, and is arranged to receive at least one control voltage, wherein the at least one control voltage is arranged to adjust conduction degree of the at least one switch circuit.

Abstract: An amplifier device includes a regulator circuit, a first voltage converting circuit, a first control circuit, and an amplifier circuit. The regulator circuit is configured to output a first driving voltage. The first voltage converting circuit is coupled to the regulator circuit, and is configured to output one of the first driving voltage and at least one first voltages related to the first driving voltage, as a first operating voltage. The first control circuit is coupled to the first voltage converting circuit through a first node, and is configured to receive the first operating voltage and generate a first operating signal according to the first operating voltage and a first control signal. The amplifier circuit is coupled to the first control circuit and the regulator circuit, and is configured to receive the first driving voltage, and is controlled by the first operating signal to generate an output voltage.

Abstract: An operation apparatus for a rotary switch and a rotary switch relate to the field of switch technologies. The operation apparatus for a rotary switch includes a motion member and a fastener having an accommodating cavity. The motion member passes through the accommodating cavity, and the motion member is driven to move in the accommodating cavity and can be switched between a lock position and a working position. The lock position restricts rotation of the motion member. When the motion member is in the working position, a release can be reset under action of the motion member. The operation apparatus for the rotary switch provides for reliable reset of the release.

Abstract: A rotary operator and a rotary switch are disclosed, relating to the technical field of switches. The rotary operator includes a handle, a fastening base, and a pressing component. The fastening base is provided with an accommodation cavity. A transmission end of the handle is inserted in the accommodation cavity and is capable of relatively rotating in the accommodation cavity. The pressing component is sleeved on the transmission end of the handle and is slidably connected to the fastening base. The handle is pushed to move along an axis of the accommodation cavity, so that the pressing component moves relative to the fastening base to be in contact with or be separated from a tripper of a circuit breaker. The rotary operator can reset the tripper of the circuit breaker easily after a switching operation is completed.

Abstract: Embodiments of the present application relate to the field of electrical switching technologies, and provide a switch unit and a switching device. The switch unit includes at least one stationary contact assembly. Each stationary contact assembly includes a first stationary contact, a second stationary contact, and a first pin connected to the first stationary contact. The first pin is welded to a circuit board. This can reduce a quantity of contact connections, simplify a connection manner, and improve safety during use.

Abstract: The present invention discloses a variable gain amplifier circuit having linearity compensation mechanism is provided. A lower amplification transistor of a lower branch of an amplification circuit is controlled by an AC input signal. Upper amplification transistors of an upper branch generate an AC output signal at an amplification output terminal. An amplification control circuit controls the turn-on and turn-off of the upper amplification transistor according to an amplification control voltage. An inductor is electrically coupled between a power supply terminal and the amplification output terminal. In a gain adjustment circuit, each of adjustment control circuits controls the turn-on and turn-off of each of adjustment transistors according to a adjustment control voltage. A first voltage adjustment circuit adjusts an impedance of each of the adjustment transistors to further adjust an AC cross voltage relation between the lower amplification transistor and the upper amplification transistors.

Abstract: An amplifying circuit comprises: a plurality of first transistors; a second transistor coupled in series with the first transistor; and a compensation capacitor group comprising a plurality of compensation capacitors and a plurality of switches. When the amplifying circuit operates in a first gain mode, a first number of first transistors are turned on and a second number of compensation capacitors are coupled between the first terminal and the second terminal of the first transistor. When the amplifying circuit operates in a second gain mode, a third number of first transistors are turned on and a fourth number of compensation capacitors are coupled between the first terminal and the second terminal of the first transistor. The first number is larger than the third number, and the second number is larger than the fourth number.

Abstract: An inductor device includes a first inductor, a second inductor, and at least one switch circuit. The second inductor is arranged to enclose the first inductor, and use a topmost layer metal to resist external interference for the first inductor. The at least one switch circuit is coupled to the second inductor, and is arranged to receive at least one control voltage, wherein the at least one control voltage is arranged to adjust conduction degree of the at least one switch circuit.

Abstract: In accordance with aspects and embodiments, an improved similarity based learning machine and methods of similarity based machine learning are provided. More specifically, the learning machines and machine learning methods of the present disclosure advantageously define subjects by attributes, assign a first similarity score to each of the subjects, from the first similarity score, calculate attribute scaling factors, and use the attribute scaling factors to generate an improved similarity score. In accordance with aspects and embodiments, the improved similarity scores may be used to improve machine learning.

Abstract: An amplifier device includes a regulator circuit, a first voltage converting circuit, a first control circuit, and an amplifier circuit. The regulator circuit is configured to output a first driving voltage. The first voltage converting circuit is coupled to the regulator circuit, and is configured to output one of the first driving voltage and at least one first voltages related to the first driving voltage, as a first operating voltage. The first control circuit is coupled to the first voltage converting circuit through a first node, and is configured to receive the first operating voltage and generate a first operating signal according to the first operating voltage and a first control signal. The amplifier circuit is coupled to the first control circuit and the regulator circuit, and is configured to receive the first driving voltage, and is controlled by the first operating signal to generate an output voltage.

Abstract: A smart system for monitoring a cognition status of a user includes an electroencephalography (EEG) acquisition module, configured to capture a plurality of brainwave signals; an analog filter circuit, coupled to the EEG acquisition module and configured to amplify the plurality of brainwave signals; an analog to digital (ADC) circuit, coupled to the analog filter circuit and configured to transform the plurality of brainwave signals into a plurality of digital signals; and a digital signaling processing (DSP) circuit, configured to retrieve a plurality of characteristics from the plurality of digital signals to determine the cognition status of the user.

Abstract: In accordance with aspects and embodiments, an improved similarity based learning machine and methods of similarity based machine learning are provided. More specifically, the learning machines and machine learning methods of the present disclosure advantageously define subjects by attributes, assign a first similarity score to each of the subjects, from the first similarity score, calculate attribute scaling factors, and use the attribute scaling factors to generate an improved similarity score. In accordance with aspects and embodiments, the improved similarity scores may be used to improve machine learning.

Abstract: A sheet medium flattening device includes a mounting frame configured to mount and support following components; an annular passage, including an annular inner passage plate and an annular outer passage plate, a heating module arranged in a hollow inner cavity of the inner passage plate to supply heat for the inner passage plate; at least one pinch roller arranged at an outer side of the annular guiding plate and realizing clamping with the inner passage plate through a hole slot arranged in the annular guiding plate; a reversing mechanism configured to selectively convey banknotes between the conveying passage and the annular passage of the flattening device; a driving device configured to drive the inner passage plate to rotate; and a control system configured to control a temperature of the heating module and control a selectively switchover of the reversing mechanism.

Abstract: A device for detecting a foreign object attached on a surface of a sheet-like medium, comprising a static electricity providing part (A) for providing static electrical charges, a medium transporting part (B) for transporting a medium under detection, and a static electricity sensor and identifier part (C). The medium transporting part comprises a static electricity receiving unit and a static electricity absorbing unit sequentially connected. The static electricity receiving unit is connected to the static electricity providing part (A), and the static electricity absorbing unit is connected to the static electricity sensor and identifier part (C). The static electricity receiving unit is configured to transfer the static electrical charges obtained from the static electricity providing part (A) to the medium under detection. The static electricity absorbing unit is configured to absorb the static electrical charges of the medium under detection.

Abstract: A sheet medium flattening device includes a mounting frame configured to mount and support following components; an annular passage, including an annular inner passage plate and an annular outer passage plate, a heating module arranged in a hollow inner cavity of the inner passage plate to supply heat for the inner passage plate; at least one pinch roller arranged at an outer side of the annular guiding plate and realizing clamping with the inner passage plate through a hole slot arranged in the annular guiding plate; a reversing mechanism configured to selectively convey banknotes between the conveying passage and the annular passage of the flattening device; a driving device configured to drive the inner passage plate to rotate; and a control system configured to control a temperature of the heating module and control a selectively switchover of the reversing mechanism.

Abstract: A device for detecting a foreign object attached on a surface of a sheet-like medium, comprising a static electricity providing part (A) for providing static electrical charges, a medium transporting part (B) for transporting a medium under detection, and a static electricity sensor and identifier part (C). The medium transporting part comprises a static electricity receiving unit and a static electricity absorbing unit sequentially connected. The static electricity receiving unit is connected to the static electricity providing part (A), and the static electricity absorbing unit is connected to the static electricity sensor and identifier part (C). The static electricity receiving unit is configured to transfer the static electrical charges obtained from the static electricity providing part (A) to the medium under detection. The static electricity absorbing unit is configured to absorb the static electrical charges of the medium under detection.