Abstract: This application relates to an image acquisition method performed by a computer device. The method includes: displaying a mapping pattern corresponding to a key area of a target part of a target object in response to a pattern display operation triggered by the target object; changing a display state of the currently displayed mapping pattern when a relative position of the target part relative to an image acquisition element changes; and acquiring a key area image of the target part contactlessly by using the image acquisition element when the currently displayed mapping pattern matches a preset recognition pattern.

Abstract: Provided are techniques for identifying and correcting model focus drift during model training. A model is trained using an original dataset with data, and the is classified into clusters. A representation is assigned to each of the clusters. A first visualization dashboard with visualizations is generated, where each visualization represents a first data distribution of an associated cluster using the representation assigned to that cluster. The model is fine-tuned using a fine-tune dataset. A second visualization dashboard is generated by updating each visualization, where each visualization represents a second data distribution of the associated cluster. It is determined that a cluster of the clusters has focus drift based on changes between the first data distribution and the second data distribution. The focus drift is corrected by: adding the data of the cluster to the fine-tune dataset to form a combined dataset and fine-tuning the model using the combined dataset.

Abstract: A dual-band antenna is provided. The dual-band antenna includes a first antenna, a second antenna, and a grounding component. The first antenna has a first feed point for transceiving a first signal. The second antenna has a second feed point. The grounding component is electrically coupled to the first feed point and the second feed point, wherein the grounding component forms a first path and a second path between the first feed point and the second feed point, wherein a first path length of the first path and a second path length of the second path are integer multiples of a first wavelength of the first signal.

Abstract: A chip-type antenna structure includes a baseboard, a matching element, a radiation single body and a frequency-modulation element. The baseboard includes a first-ground surface, a first-clearance area and a signal-feed-in unit. A second-ground surface, a second-clearance area, a third-ground surface and a plurality of via holes through the baseboard and electrically connected to the first-ground surface and the second-ground surface are arranged on the other side of the baseboard. The matching element is electrically connected between the signal-feed-in unit and the first-ground surface. One side of the radiation single body is electrically connected to the signal-feed-in unit through the via holes. The other side of the radiation single body is electrically connected to the third-ground surface.

Abstract: A chip-type antenna structure includes a baseboard, a matching element, a radiation single body and a frequency-modulation element. The baseboard includes a first-ground surface, a first-clearance area and a signal-feed-in unit. A second-ground surface, a second-clearance area, a third-ground surface and a plurality of via holes through the baseboard and electrically connected to the first-ground surface and the second-ground surface are arranged on the other side of the baseboard. The matching element is electrically connected between the signal-feed-in unit and the first-ground surface. One side of the radiation single body is electrically connected to the signal-feed-in unit through the via holes. The other side of the radiation single body is electrically connected to the third-ground surface.

Abstract: An enhanced printed circuit board monopole antenna includes a baseplate, a signal feed-in unit, a first-radiation unit, a second-radiation unit and an auxiliary ground unit. The first-radiation unit and the second-radiation unit are arranged on a front side and an edge side of the baseplate. The auxiliary ground unit is arranged on the edge side and electrically connected to a first ground unit and a second ground unit on the baseplate. Adjusting the first-radiation unit controls 88 MHZ-60 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. According to the frequency wave length (1?, ½?, ¼? or ??) formed by the first-radiation unit and the second-radiation unit cooperating with each other, controlling 88 MHZ-60 GHZ frequency range achieves the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna radiation efficiency can be increased effectively.

Abstract: A multi-band antenna including a ground portion, a first radiation portion, a second radiation portion, a feeding portion and a matching portion is provided. The first radiation portion is disposed beside the ground portion, a first gap is existed between the ground portion and the first radiation portion so as to form a first slot, and the first slot has a first open terminal located at the first gap. The second radiation portion is connected to the first radiation portion. The feeding portion is located between the first radiation portion and the second radiation portion. The matching portion is located in the first slot and connected to the first radiation portion and the ground portion. The feeding portion excites the first slot to generate a first resonant mode. The second radiation portion generates a second resonant mode.

Abstract: A dual-band antenna is provided. The dual-band antenna includes a first antenna, a second antenna, and a grounding component. The first antenna has a first feed point for transceiving a first signal. The second antenna has a second feed point. The grounding component is electrically coupled to the first feed point and the second feed point, wherein the grounding component forms a first path and a second path between the first feed point and the second feed point, wherein a first path length of the first path and a second path length of the second path are integer multiples of a first wavelength of the first signal.

Abstract: An enhanced printed circuit board monopole antenna includes a baseplate, a signal feed-in unit, a first-radiation unit, a second-radiation unit and an auxiliary ground unit. The first-radiation unit and the second-radiation unit are arranged on a front side and an edge side of the baseplate. The auxiliary ground unit is arranged on the edge side and electrically connected to a first ground unit and a second ground unit on the baseplate. Adjusting the first-radiation unit controls 88 MHZ-60 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. According to the frequency wave length (1?, ½?, ¼? or ??) formed by the first-radiation unit and the second-radiation unit cooperating with each other, controlling 88 MHZ-60 GHZ frequency range achieves the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna radiation efficiency can be increased effectively.

Abstract: A method for manufacturing chip signal elements includes steps as follows. A substrate is provided. A plurality of through holes is drilled, and a plurality of side holes is formed along the through holes. A first cooper-plating process is performed to form a plurality of conductive layers electrically connected to the upper and the lower metal layer. A second cooper-plating process is performed to increase thickness of the conductive layers. A first and a second pattern layers are formed on the substrate by an etching. The first pattern layer is electrically connected to the second pattern layer to form a spiral radiator. An ink is printed on the substrate to cover the spiral radiator and form a solder mask layer. An organic metal process and a plating process are performed to form terminal electrodes. Finally, a single chip signal element having a spiral radiator is formed.

Abstract: In an electronic switching beamforming antenna array, a coplanar feeding line of the antenna array is configured on a metal plane of a substrate, and a plurality of slot antennas of aforementioned antenna array are inclinedly configured on the metal plane and configured on at least one side of the coplanar feeding line. A slot coupling segment of slot antenna is configured at one end of the slot antenna and neighbored with the coplanar feeding line so as to make the slot antenna couple with the coplanar feeding line, and a switch device of the slot antenna is configured at one portion which between one part of the slot antenna and a grounding plane formed by the metal plane. When the switch device is triggered to configure a radiating feature of the slot antenna, the antenna array is able to achieve the purpose of setting beamforming direction.

Abstract: A single feed-in dual-band antenna structure includes a first radiation unit, a basal plate and a plurality of matching components. The basal plate includes a front side, a back side and an edge side. A first ground unit, a signal feed-in unit, a second radiation unit and an electrode part are arranged on the front side. A third radiation unit is arranged on the edge side. A second ground unit is arranged on the back side of the basal plate. The first radiation unit is electrically connected to the electrode part. The first radiation unit is adjusted to control the 2.45 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. The third radiation unit frequency wave length controls the 5 GHZ frequency range to achieve the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna size can be reduced effectively.

Abstract: A multi-band antenna including a ground portion, a first radiation portion, a second radiation portion, a feeding portion and a matching portion is provided. The first radiation portion is disposed beside the ground portion, a first gap is existed between the ground portion and the first radiation portion so as to form a first slot, and the first slot has a first open terminal located at the first gap. The second radiation portion is connected to the first radiation portion. The feeding portion is located between the first radiation portion and the second radiation portion. The matching portion is located in the first slot and connected to the first radiation portion and the ground portion. The feeding portion excites the first slot to generate a first resonant mode. The second radiation portion generates a second resonant mode.

Abstract: A single feed-in dual-band antenna structure includes a first radiation unit, a basal plate and a plurality of matching components. The basal plate includes a front side, a back side and an edge side. A first ground unit, a signal feed-in unit, a second radiation unit and an electrode part are arranged on the front side. A third radiation unit is arranged on the edge side. A second ground unit is arranged on the back side of the basal plate. The first radiation unit is electrically connected to the electrode part. The first radiation unit is adjusted to control the 2.45 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. The third radiation unit frequency wave length controls the 5 GHZ frequency range to achieve the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna size can be reduced effectively.

Abstract: An enhanced printed circuit board monopole antenna includes a baseplate, a signal feed-in unit, a first-radiation unit, a second-radiation unit and an auxiliary ground unit. The first-radiation unit and the second-radiation unit are arranged on a front side and an edge side of the baseplate. The auxiliary ground unit is arranged on the edge side and electrically connected to a first ground unit and a second ground unit on the baseplate. Adjusting the first-radiation unit controls 88 MHZ-60 GHZ frequency range impedance, resonant frequency, bandwidth and radiation effect. According to the frequency wave length (1?, ½?, ¼? or ??) formed by the first-radiation unit and the second-radiation unit cooperating with each other, controlling 88 MHZ-60 GHZ frequency range achieves the predetermined target impedance, resonant frequency, bandwidth and radiation efficiency. The antenna radiation efficiency can be increased effectively.

Abstract: A method for manufacturing chip signal elements includes steps as follows. A substrate is provided. A plurality of through holes is drilled, and a plurality of side holes is formed along the through holes. A first cooper-plating process is performed to form a plurality of conductive layers electrically connected to the upper and the lower metal layer. A second cooper-plating process is performed to increase thickness of the conductive layers. A first and a second pattern layers are formed on the substrate by an etching. The first pattern layer is electrically connected to the second pattern layer to form a spiral radiator. An ink is printed on the substrate to cover the spiral radiator and form a solder mask layer. An organic metal process and a plating process are performed to form terminal electrodes. Finally, a single chip signal element having a spiral radiator is formed.

Abstract: In an electronic switching beamforming antenna array, a coplanar feeding line of the antenna array is configured on a metal plane of a substrate, and a plurality of slot antennas of aforementioned antenna array are inclinedly configured on the metal plane and configured on at least one side of the coplanar feeding line. A slot coupling segment of slot antenna is configured at one end of the slot antenna and neighbored with the coplanar feeding line so as to make the slot antenna couple with the coplanar feeding line, and a switch device of the slot antenna is configured at one portion which between one part of the slot antenna and a grounding plane formed by the metal plane. When the switch device is triggered to configure a radiating feature of the slot antenna, the antenna array is able to achieve the purpose of setting beamforming direction.

Abstract: A deficit fair priority queue scheduling technique includes arranging connections in a waiting queue according to a plurality of priority classes including a first class having a higher priority than a second class. Each time a scheduler visits a queue having waiting connections, a deficit value for each priority class is initialized and used to determine how many bandwidth request packets for that class will be serviced in a round. The highest priority packets will be serviced until the deficit value for that class falls below a selected threshold or there are no remaining waiting packets of that class. Within the same round, the scheduler can service lower priority connections until the deficit value for that service class is below the threshold or there are no remaining packets of that class. Because the lower class packets have a chance of being serviced before all higher priority class packets have been serviced, the disclosed example is a deficit fair priority queuing technique.