Abstract: A synchronized rectification control method for use in a flyback converter is provided. The flyback converter includes a transformer including a secondary winding, a synchronous rectifier switch and a synchronous rectifier controller. The synchronous rectifier switch is coupled to the secondary winding and the synchronous rectifier controller, and is used to output a voltage difference signal and receive a control voltage. The method includes the synchronous rectifier controller detecting a rapid falling edge of the voltage difference signal to generate a rapid falling edge signal, generating an envelope signal according to the voltage difference signal, generating a time length control signal according to the voltage difference signal and the envelope signal, generating a blanking time signal according to the voltage difference signal and the time length control signal, and performing a logic operation on the blanking time signal and the rapid falling edge signal to generate the control voltage.
Abstract: A charging system includes a primary power source, a power source controller coupled to the primary power source, a first switch, a third switch, and a first port. The power source controller includes an auxiliary power source, a first auxiliary power terminal coupled to the auxiliary power source for providing a first detection current, and a load detection circuit. The power source controller initially sets the first switch to be off, the third switch to be on, and the first auxiliary power terminal to provide the first detection current to the first port through the third switch. When the first detection current is less than a threshold value, the power source controller maintains the first switch to be off, the third switch to be on, and the first auxiliary power terminal to provide the first detection current through the third switch.
Abstract: A controller and a control method for an asymmetric half-bridge power supply are disclosed. The asymmetric half-bridge power supply includes a first arm switch and a second arm switch forming a half-bridge, and a resonant circuit connected to the half-bridge. The method includes providing a duration parameter reflecting a second turn-on time of the second arm switch in a earlier switching cycle; providing a control signal to turn on the first arm switch for a first turn-on time in a later switching cycle; detecting whether the first arm switch has performed ZVS in response to a signal edge of the control signal to adjust the duration parameter accordingly; determining the second turn-on time of the second arm switch in the later switching cycle based on the duration parameter; and turning on the second arm switch for the second turn-on time after the first turn-on time in the later switching cycle.
Abstract: A smart terraponic gardening system is provided that includes a first reservoir configured to contain a liquid and a second reservoir configured to contain a growing medium for a plant or fungus. A light source and a watering system are provided. A control unit is in electronic communication with the light source and the watering system. At least one sensor of a camera, a temperature sensor, or a humidity sensor is provided in signal communication with the control unit to adjust growing conditions based on the sensor output. In some instances, the control unit is programmed to maintain growing conditions for a specific plant of fungus growing in the second reservoir. The program in some instances is associated with a library of target plants or fungi, and their associated idealized growing conditions.
Abstract: Methods, compositions and kits are disclosed directed at levetiracetam derivatives, immunogens, signal generating moieties, antibodies that bind levetiracetam and immunoassays for detection of levetiracetam.
Type:
Grant
Filed:
December 10, 2021
Date of Patent:
January 21, 2025
Assignee:
ARK Diagnostics, Inc.
Inventors:
Johnny Jose Valdez, Byung Sook Moon, Ki Chung, Alejandro A. Orozco
Abstract: A receiving unit receives configuration information for analyzing a set of a plurality of dynamically-displayed two-dimensional codes and evaluation information for evaluating the result of analysis, a photographing unit photographs a dynamically-displayed two-dimensional code, an analysis unit analyzes the photographed two-dimensional code based on the configuration information, and an evaluation unit evaluates the result of analysis in the analysis unit based on the evaluation information.
Abstract: A current detection circuit includes a processing circuit used to operate during each switch cycle which includes a first period and a second period. A cycle detecting current is provided based on the terminal voltage established on a first end of a capacitor. The terminal voltage established on the first end of the capacitor is increased during the first period using a constant current. The terminal voltage established on the first end of the capacitor varies with a low-side detecting current during the second period.
Type:
Application
Filed:
June 26, 2024
Publication date:
January 2, 2025
Applicant:
ARK MICROELECTRONIC CORP. LTD.
Inventors:
Shun-Yu Huang, Wei-Jen Huang, Sih-Ying Li
Abstract: A system can include a battery pack with battery cell sections connected in series, where each of the battery cell sections includes a battery cell and a bypass switch. The system can also include a control circuit. The control circuit can determine a capacity of a particular battery cell in a particular battery cell section, determine that the capacity of the particular battery cell is less than a predefined threshold, and in response, execute a bypass sequence for the particular battery cell. The bypass sequence can involve determining a bypass period for which to bypass the particular battery cell based on the capacity of the particular battery cell, and transmitting a bypass signal to a drive circuit. The drive circuit can receive the bypass signal and responsively operate the bypass switch of the particular battery cell section to bypass the particular battery cell for the bypass period.
Abstract: A sample is introduced from a bioreactor to a chamber included in a manifold. The chamber includes at least a first probe. The at least the first probe is coupled to a controller. One or more measurements are performed on the sample while the sample is located in the chamber for a measurement period. The sample is returned from the chamber to the bioreactor after the one or more measurements of the sample have been performed.
Type:
Grant
Filed:
April 28, 2023
Date of Patent:
December 17, 2024
Assignee:
Ark Biotech Inc.
Inventors:
Kai Hoeffner, Zheng Huang, Savitha Panikar, Orianna Elysse Kane, Zachary Allen Corriveau, William Fabrizio
Abstract: Disclosed are an algorithm for automatic fundus image reading, and a deep learning architecture for automatic fundus image reading, which are capable of minimizing the amount of data required for learning by training and reading artificial intelligence in a manner similar to that of an ophthalmologist who acquires medical knowledge.
Abstract: Disclosed herein are antibodies that specifically bind to a methotrexate analyte. Such antibodies can be used to detect a methotrexate analyte in a sample, such as in a homogeneous enzyme immunoassay method. Hapten structures to elicit such antibodies and conjugates useful in immunoassays are also described.
Type:
Grant
Filed:
March 20, 2023
Date of Patent:
December 10, 2024
Assignee:
ARK Diagnostics, Inc.
Inventors:
Johnny Valdez, Byung Sook Moon, Rajendra Singh, Jacqueline Nguyen-Choi
Abstract: An airlift bioreactor includes a body, a first sparging region, a second sparging region, a first sparger configured to sparge a first gas within the first sparging region, a second sparger configured to sparge a second gas within sparging region, and a controller coupled to the first sparger and the second sparger. The controller is configured to control a first flow rate associated with the first sparger and a second flow rate associated with the second sparger.
Type:
Grant
Filed:
March 24, 2023
Date of Patent:
December 3, 2024
Assignee:
Ark Biotech Inc.
Inventors:
Zheng Huang, Kai Hoeffner, Orianna Elysse Kane
Abstract: Disclosed is a coaxial non-mydriatic multispectral fundus camera, including: an illumination unit configured to emit light; a diffusion lens configured to diffuse the light incident from the illumination unit; an illumination lens configured to irradiate the light incident from the diffusion lens at a predetermined emission angle; a mirror configured to reflect the light incident from the illumination lens; a polarizing beam splitter configured to transmit P-polarized light of the light incident from the mirror and reflect S-polarized light thereof; an objective lens configured to image a fundus using the light incident from the polarizing beam splitter and then enlarge a returning image of the fundus; a short-range eyepiece lens configured to reduce or enlarge the image of the fundus enlarged by the objective lens; and an imaging device configured to acquire a fundus photograph from the image of the fundus received from the short-range eyepiece lens.
Abstract: A dynamic two-dimensional code group generation method for generating a two-dimensional code group for dynamically displaying, repeatedly in sequence, a plurality of two-dimensional codes arranged in a time series includes a base identifying step of determining a first setting value of a base two-dimensional code serving as a base from among first setting values identified by evaluation values each associated with a corresponding one of the two-dimensional codes in the two-dimensional code group; and a data block arrangement step of generating and arranging a data block in a storage two-dimensional code identified on the basis of a second setting value corresponding to the first setting value determined in the base identifying step, the data block being based on content of target information to be coded.