Abstract: Methods and systems use a second dataset comprising independently validated data based on labeled blockchain operations previously processed through the blockchain network. The use of the second dataset in conjunction with the dataset comprising labeled blockchain characteristics data received from a plurality of sources provides a comprehensive input for a machine learning model to identify and label suspicious blockchain operations. By doing so, the system mitigates fraudulent, criminal, or suspicious transactions. For example, the system may send an alert to a user if a behavior type is deemed a high risk by the machine learning model; the system may furthermore hold the funds associated with the blockchain operation in a separate account while the transaction is manually reviewed.

Abstract: A dimmer control circuit for controlling a phase cut dimmer includes: a rectifier circuitry, configured to rectify the output voltage of the phase cut dimmer to output a rectified voltage; an input voltage detecting circuitry, configured to output a detected voltage according to the rectified voltage; a processor, configured to output a control signal when the detected voltage meets a preset condition; and a constant current circuitry, configured to output or stop outputting a preset current to the rectifier circuitry in response to the control signal; wherein the preset current has a value greater than a holding current of the phase cut dimmer.

Abstract: A dimmer control circuit for controlling a phase cut dimmer includes: a rectifier circuitry, configured to rectify the output voltage of the phase cut dimmer to output a rectified voltage; an input voltage detecting circuitry, configured to output a detected voltage according to the rectified voltage; a processor, configured to output a control signal when the detected voltage meets a preset condition; and a constant current circuitry, configured to output or stop outputting a preset current to the rectifier circuitry in response to the control signal; wherein the preset current has a value greater than a holding current of the phase cut dimmer.

Abstract: An LED drive circuit and drive method thereof are provided. The drive circuit comprises: a rectifier circuit receiving a phase-control dimming signal with a conduction angle, and outputting a rectified signal; a converter comprising a switching element, with an input end coupled to the rectifier circuit and an output end coupled to an LED; and a controller having a first input end receiving the rectified signal, a second input end receiving a first sampling signal and an output end outputting a control signal according to the rectified signal and the sampling signal; wherein the switching element receives the control signal from the controller, thus executing an on/off operation to control current flowing through the LED.

Abstract: An electronic travel album generating method includes the following steps: acquiring imported photos; acquiring shooting time and shooting address information of the photos; sequencing the photos according to the shooting time; categorizing the sequenced photos into categories according to an arrangement sequence; acquiring scenic spot information corresponding to each category according to the shooting address information of photos of each category; and encoding the photos into an electronic travel album according to the shooting time of the photos, a sequencing result obtained by the sequencing step, category information obtained by the categorizing step, and the scenic spot information corresponding to each category. With the electronic travel album generating method, an electronic travel album can be simply and quickly generated. In addition, a computing device for generating an electronic travel album is further provided.

Abstract: An LED drive circuit and drive method thereof are provided. The drive circuit comprises: a rectifier circuit receiving a phase-control dimming signal with a conduction angle, and outputting a rectified signal; a converter comprising a switching element, with an input end coupled to the rectifier circuit and an output end coupled to an LED; and a controller having a first input end receiving the rectified signal, a second input end receiving a first sampling signal and an output end outputting a control signal according to the rectified signal and the sampling signal; wherein the switching element receives the control signal from the controller, thus executing an on/off operation to control current flowing through the LED.

Abstract: A photo collection display method and apparatus are disclosed. The method includes: acquiring photo selection information, the photo selection information comprising: a birth date of a figure in a photo; reading photo information of each photo in a photo collection, the photo information comprising: a photo shooting time, the photo collection recording more than one photo; calculating a difference between a photo shooting time and the birth date of the figure in each photo, to obtain a sorting date of each photo; creating a timeline comprising time points; matching the sorting date with a time point in the timeline, to obtain a link relationship between the sorting date and the corresponding time point in the timeline; and displaying, after one time point in the timeline is triggered, a corresponding photo of the photo collection in a predetermined position of the timeline according to the link relationship.

Abstract: The present application discloses a LED driver including: a first and a second auxiliary windings connected in series with each other; a first rectifying device coupled with a terminal of the first auxiliary winding while the other terminal is coupled with the second auxiliary winding; a second rectifying device coupled with a terminal of the second auxiliary winding; a first voltage regulator coupled with the first rectifying device; an unidirectional conducting device having a positive and a negative terminals; and a DC output terminal coupled with the negative terminal of the unidirectional conducting device and configured to provide required DC electricity to a control circuit in the LED driver. The LED driver can guarantee that Vcc voltages provided under a heavy or light load state can always meet the DC power supplying requirements of respective control devices in the driver and meanwhile losses can be reduced.

Abstract: The present application discloses a LED driver including: a first and a second auxiliary windings connected in series with each other; a first rectifying device coupled with a terminal of the first auxiliary winding while the other terminal is coupled with the second auxiliary winding; a second rectifying device coupled with a terminal of the second auxiliary winding; a first voltage regulator coupled with the first rectifying device; an unidirectional conducting device having a positive and a negative terminals; and a DC output terminal coupled with the negative terminal of the unidirectional conducting device and configured to provide required DC electricity to a control circuit in the LED driver. The LED driver can guarantee that Vcc voltages provided under a heavy or light load state can always meet the DC power supplying requirements of respective control devices in the driver and meanwhile losses can be reduced.