Abstract: An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.

Abstract: The present disclosure relate to an improved portable distribution transformer hoisting rack, comprising a loose-leaf hold hoop, a fixed hold hoop, a supporting rod, and a length-adjustable adjusting rod, wherein: the loose-leaf hold hoop includes a first hold hoop, a second hold hoop, and a third hold hoop, the third hold hoop being disposed between the first hold hoop and the second hold hoop; one end of the supporting rod being rotatably connected to the third hold hoop; the other end of the supporting rod being provided with a hoisting assembly, one end of the adjusting rod being movably connected to the supporting rod, and the other end of the adjusting rod being movably connected to the fixed hold hoop.

Abstract: An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.

Abstract: The invention discloses a parallel electrode combination, which includes a first power module electrode and a second power module electrode, wherein a soldering portion of the first power module electrode and a soldering portion of the second power module electrode are respectively used to connect a copper layer of a power source inside a power module, and a connecting portion of the first power module electrode and a connecting portion of the second power module electrode are opposite in parallel. The invention further discloses a power module and a power module group using the parallel electrode combination. In the invention, the connecting portion of the first power module electrode and the connecting portion of the second power module electrode are opposite in parallel.

Abstract: A combined electrode comprises a negative electrode, a first intermediate electrode, a positive electrode and a second intermediate electrode, wherein a main body portion of the negative electrode and a main body portion of the first intermediate electrode, a connection portion of the negative electrode and a connection portion of the first intermediate electrode, main body portions of the positive electrode and main body portions of the second intermediate electrode, and a connection portion of the positive electrode and a connection portion of the second intermediate electrode are arranged in parallel to and directly facing each other, thereby increasing a facing area between the negative electrode and the first intermediate electrode and between the positive electrode and the second intermediate electrode, reducing a current loop area between the negative electrode and the first intermediate electrode and between the positive electrode and the second intermediate electrode.

Abstract: A first request to form a conference call is received from a first of a plurality of electronic devices. In response to the first request, a conference data structure is generated in a memory. Based on determining the conference call has ended, a second request is transmitted to each of the plurality of electronic devices to return a high-resolution video stream generated by each electronic device during the conference call. In response to the second requests, the high-resolution video stream is received from at least some of the plurality of electronic devices. Each of the received high-resolution video streams is stored in the conference data structure in the memory to generate a completed conference data structure. A notice that the completed conference data structure is available is transmitted to each of the plurality of electronic devices.

Abstract: A method for determining personalized near addition value for non-presbyopes, including measuring fusional amplitudes and phoria with at least one addition value, on both eyes of a person at a working distance; finding a mathematical function that predicts the change of a pair of fusional amplitudes and phoria as a function of addition value based on the addition value and the measured fusional amplitudes and phoria; and determining the near addition value according to a suitable relationship between the pair of fusional amplitudes and phoria on the mathematical function.

Abstract: The present disclosure relate to an improved portable distribution transformer hoisting rack, comprising a loose-leaf hold hoop, a fixed hold hoop, a supporting rod, and a length-adjustable adjusting rod, wherein: the loose-leaf hold hoop includes a first hold hoop, a second hold hoop, and a third hold hoop, the third hold hoop being disposed between the first hold hoop and the second hold hoop; one end of the supporting rod being rotatably connected to the third hold hoop; the other end of the supporting rod being provided with a hoisting assembly, one end of the adjusting rod being movably connected to the supporting rod, and the other end of the adjusting rod being movably connected to the fixed hold hoop.

Abstract: One example heat sink includes a heat dissipation substrate, a connector, and a fastener. The heat dissipation substrate is configured to dissipate heat for a packaged chip located on a circuit board, and the heat dissipation substrate is located on a surface that is of the packaged chip and that is opposite to the circuit board. A first heat dissipation substrate and a second heat dissipation substrate of the heat dissipation substrate each have a heat conduction surface that conducts heat with a chip in the packaged chip. Different heat conduction surfaces correspond to different chips.

Abstract: A combined electrode comprises a negative electrode, a first intermediate electrode, a positive electrode and a second intermediate electrode, wherein a main body portion of the negative electrode and a main body portion of the first intermediate electrode, a connection portion of the negative electrode and a connection portion of the first intermediate electrode, main body portions of the positive electrode and main body portions of the second intermediate electrode, and a connection portion of the positive electrode and a connection portion of the second intermediate electrode are arranged in parallel to and directly facing each other, thereby increasing a facing area between the negative electrode and the first intermediate electrode and between the positive electrode and the second intermediate electrode, reducing a current loop area between the negative electrode and the first intermediate electrode and between the positive electrode and the second intermediate electrode.

Abstract: In scenes that have low lighting, it may be difficult for a personal electronic device to capture video images that meet a scene lighting criteria. In some low-lighting situations, the receiving party may be unable to sufficiently see the face of the party that they are videoconferencing with. Described herein are techniques for utilizing a device's display to illuminate the scene surrounding the device. Improved lighting may come from global display adjustments, local display adjustments that do not alter the display's contents (other than to change their brightness levels), and/or local display adjustments that alter the display's contents. In some embodiments, background elements on a device's display may be identified for brightening in a first attempt to meet the scene lighting criteria without negatively impacting foreground scene content. If such approaches are unsuccessful, the device may next replace one or more regions of displayed content with regions of brightened pixels.

Abstract: An integrated accessory control system can efficiently set up a new media streaming session with one or more accessories. A session identifier for the new session, as well as a destination address and security parameters can be generated. A data object comprising the generated elements can be written to a resource location. Additionally, a second data object comprising the session identifier, a streaming source address, a source identifier, and additional security parameters can be read from the resource location. A third data object comprising the session identifier, a session start command, and codec parameters can then be generated. The third data object can also be written to the resource location. Further, streamed media data conforming to the codec parameters and the security parameters may be received.

Abstract: A first request to form a conference call is received from a first of a plurality of electronic devices. In response to the first request, a conference data structure is generated in a memory. Based on determining the conference call has ended, a second request is transmitted to each of the plurality of electronic devices to return a high-resolution video stream generated by each electronic device during the conference call. In response to the second requests, the high-resolution video stream is received from at least some of the plurality of electronic devices. Each of the received high-resolution video streams is stored in the conference data structure in the memory to generate a completed conference data structure. A notice that the completed conference data structure is available is transmitted to each of the plurality of electronic devices.

Abstract: Techniques disclosed herein permit a party to identify a first (low-resolution) image as it is displayed on their, for example, smart phone during a video conference call. Identifying information specific to the first image may be collected and a request for a high-resolution copy of the image sent to the party sourcing the transmitted image. The high-resolution image may be sent from the image's sourcing device to the requestor's device during, or after, the video conference call. In some embodiments, the high-resolution image may be sent through an alternate communication channel (e.g., via a chat, social media or email channel). In other embodiments, the high-resolution image may be sent to a network-based service from which the requestor may obtain the image. In one embodiment, the sourcing device may message the requesting device that the image has been sent to the network-based service.

Abstract: An integrated accessory control system can efficiently set up a new media streaming session with one or more accessories. A session identifier for the new session, as well as a destination address and security parameters can be generated. A data object comprising the generated elements can be written to a resource location. Additionally, a second data object comprising the session identifier, a streaming source address, a source identifier, and additional security parameters can be read from the resource location. A third data object comprising the session identifier, a session start command, and codec parameters can then be generated. The third data object can also be written to the resource location. Further, streamed media data conforming to the codec parameters and the security parameters may be received.

Abstract: A test method and system for cut-in voltage. The method comprises: coarse scanning of the cut-in voltage: a grid voltage, i.e., the cut-in voltage, is quickly determined when a drain terminal current is greater than a target current for the first time (100); accurate scanning of the cut-in voltage: a scanning step length is shortened continuously until the scanning step length is shorter than a preset step length, and each time the scanning step length is shortened, the scanning is conducted according to the current shortened scanning step length on the basis of the cut-in voltage determined in the former time, and then the cut-in voltage under the condition of the current shortened scanning step length is determined again (200). The scanning voltage is automatically increased or decreased by the test method and system through adding high resolution and high precision test conversion into a second scanning test, and therefore the testing of the cut-in voltage becomes more efficient and more accurate.

Abstract: Certain embodiments of the present invention disclose a battery heating circuit, wherein: the battery comprises a battery E1 and a battery E2. For example, the heating circuit comprises: a first charging/discharging circuit, which is connected with the battery E1, and comprises a damping component R1, a current storage component L1, a first switch unit 1 and a charge storage component C, all of which are connected in series to each other; and a second charging/discharging circuit, which is connected to the battery E2, and comprises a damping component R2, a current storage component L2, a second switch unit 2 and the charge storage component C, all of which are connected in series with each other.

Abstract: Certain embodiments of the present invention provide a battery heating circuit, wherein: the battery comprises a first battery E1 and a second battery E2, the heating circuit comprises a first switch unit 10, a second switch unit 20, a damping component R1, a damping component R2, a current storage component L1, a current storage component L2, a switching control module 100 and a charge storage component C; the first battery, the damping component R1, the current storage component L1, the first switch unit 10 and the charge storage component C are connected in series to form a first charging/discharging circuit; the second battery, the damping component R2, the current storage component L2, the charge storage component C and the second switch unit 20 are connected in series to form a second charging/discharging circuit.

Abstract: A circuit for heating a battery includes the battery including parasitic damping and current storage components, a switch unit, a switching control component coupled to the switch unit, a charge storage component, and a current limiting circuit. The damping component, current storage component, switch unit, and charge storage component are connected. The switching control component is configured to turn on and off the switch unit so as to control a first current flowing from the battery to the first charge storage component and a second current flowing from the first charge storage component to the battery. The current limiting circuit is configured to limit the second current flowing from the charge storage component to the battery. The circuit for heating the battery is configured to heat the battery by at least discharging and charging the battery.

Abstract: A test method and system for cut-in voltage. The method comprises: coarse scanning of the cut-in voltage: a grid voltage, i.e., the cut-in voltage, is quickly determined when a drain terminal current is greater than a target current for the first time (100); accurate scanning of the cut-in voltage: a scanning step length is shortened continuously until the scanning step length is shorter than a preset step length, and each time the scanning step length is shortened, the scanning is conducted according to the current shortened scanning step length on the basis of the cut-in voltage determined in the former time, and then the cut-in voltage under the condition of the current shortened scanning step length is determined again (200). The scanning voltage is automatically increased or decreased by the test method and system through adding high resolution and high precision test conversion into a second scanning test, and therefore the testing of the cut-in voltage becomes more efficient and more accurate.