Abstract: This disclosure describes systems, methods, and devices related to enhanced viewport switching. A device may determine a view point change from a first segment to a second segment of a video stream, wherein each segment comprises a plurality of video chunks. The device may download a chunk location box at an end of each video chunk of the plurality of video chunks. The device may parse the chunk location box to update a chunk indexing table. The device may perform a completion check on a video chunk of the plurality of video chunks.

Abstract: This disclosure describes systems, methods, and devices related to enhanced viewport switching. A device may determine a view point change from a first segment to a second segment of a video stream, wherein each segment comprises a plurality of video chunks. The device may download a chunk location box at an end of each video chunk of the plurality of video chunks. The device may parse the chunk location box to update a chunk indexing table. The device may perform a completion check on a video chunk of the plurality of video chunks.

Abstract: An assembled cabinet and power connection boards thereof, in which side board assemblies of the assembled cabinet are stacked in a way that upper power connectors of a power connection board of a lower side board assembly among two adjacent stacked up side board assemblies are electrically connected with lower power connectors of a power connection board of the an upper side board assembly among the two adjacent stacked up side board assemblies, so as to preserve the versatility and flexibility of the installation of the assembled cabinet while allowing stable power supply to the electronic locks of the assembled cabinet.

Abstract: Techniques related to viewport selection in immersive video contexts are discussed. Such techniques include generating multiple viewport predictions each for a future time interval and based on different prediction models, ranking the viewport predictions using error descriptors of the prediction models, selecting a viewport prediction for the future time intervals using the ranking, and correcting the selected viewport predictions using the error descriptors.

Abstract: This disclosure describes systems, methods, and devices related to latency-adaptive viewport prediction for use in viewport-dependent content streaming. A method may include identifying, by a virtual reality (VR) or augmented reality (AR) device, first viewport data used by and received from a display device; generating a first estimated compensation latency based on at least one of a first network latency and by the processing circuitry, from among multiple candidate viewport prediction models each using a different respective time interval, a first viewport prediction model based on a comparison of the first estimated compensation latency to a first time interval used by the first viewport prediction model; generating, using the first viewport prediction model and the first viewport data, a first viewport prediction; and selecting, based on the first viewport prediction, a first content tile for rendering by the display device.

Abstract: This disclosure describes systems, methods, and devices related to enhanced low complexity enhancement video coding (LCEVC) presentation of tiles. A device may encode video data into one or more bits while applying an LCEVC organizational syntax. The device may generate a bitstream of the one or more bits based on the LCEVC organizational syntax. The device may assign a payload type value to the bitstream, wherein the payload type value indicates the LCEVC organizational syntax has been applied to the one or more bits. The device may transmit the bitstream to a device comprising a decoder.

Abstract: The present invention provides a tiering device for a freight compartment, which pertains to the technical field of logistic and transportation equipment. It solves the problem in the prior art that existing tiering devices for a freight compartment occupy a relatively large space inside the freight compartment. The tiering device for a freight compartment according to the present invention comprises: a sidewall of the freight compartment, a transmission part, and a vertical guide track; the transmission part lift/lower support members, the support members forms placement area for goods. Half of the transmission part is buried inside a belt guide channel on the vertical guide track, the other half is located inside the vertical guide track or is flush with the groove opening of the vertical guide track. The present invention occupies less space inside the freight compartment, thus facilitating loading/unloading goods to/from the freight compartment.

Abstract: According to a surveying and mapping instrument and method for a wide-area spatial channel map through multi-unmanned aerial vehicle (UAV) cooperation, a measurement signal emission unit generates and emits a measurement signal, a measurement signal multi-UAV cooperative receiving unit receives the measurement signal transmitted through a wireless channel, extracts an effective multipath component from the measurement signal, and frames the effective multipath component and corresponding time and location information for storage, and transmits stored channel data to a channel data fusion processing unit offline, and the channel data fusion processing unit fuses the channel data in terms of space, time, and frequency dimensions, and completes missing channel data to construct a complete wide-area spatial channel map.

Abstract: According to a surveying and mapping instrument and method for a wide-area spatial channel map through multi-unmanned aerial vehicle (UAV) cooperation, a measurement signal emission unit generates and emits a measurement signal, a measurement signal multi-UAV cooperative receiving unit receives the measurement signal transmitted through a wireless channel, extracts an effective multipath component from the measurement signal, and frames the effective multipath component and corresponding time and location information for storage, and transmits stored channel data to a channel data fusion processing unit offline, and the channel data fusion processing unit fuses the channel data in terms of space, time, and frequency dimensions, and completes missing channel data to construct a complete wide-area spatial channel map.

Abstract: Techniques related to viewport selection in immersive video contexts are discussed. Such techniques include generating multiple viewport predictions each for a future time interval and based on different prediction models, ranking the viewport predictions using error descriptors of the prediction models, selecting a viewport prediction for the future time intervals using the ranking, and correcting the selected viewport predictions using the error descriptors.

Abstract: This application discloses a fault protection method, including: A first node determines that a first cross-domain node is faulty. The first node is a head node of a segment routing best effort SR-BE service tunnel, the SR-BE tunnel is a cross-domain tunnel that passes through a first IGP domain and a second IGP domain, the SR-BE tunnel passes through the first cross-domain node, and the first cross-domain node is a node that crosses the first IGP domain and the second IGP domain. The first node switches a service transmission path from the SR-BE tunnel to a backup tunnel. The backup tunnel does not pass through the first cross-domain node, and the backup tunnel is a tunnel with a strict explicit path.

Abstract: An assembled cabinet and power connection boards thereof, in which side board assemblies of the assembled cabinet are stacked in a way that upper power connectors of a power connection board of a lower side board assembly among two adjacent stacked up side board assemblies are electrically connected with lower power connectors of a power connection board of the an upper side board assembly among the two adjacent stacked up side board assemblies, so as to preserve the versatility and flexibility of the installation of the assembled cabinet while allowing stable power supply to the electronic locks of the assembled cabinet.

Abstract: The present invention provides a tiering device for a freight compartment, which pertains to the technical field of logistic and transportation equipment. It solves the problem in the prior art that existing tiering devices for a freight compartment occupy a relatively large space inside the freight compartment. The tiering device for a freight compartment according to the present invention comprises: a sidewall of the freight compartment, a transmission part, and a vertical guide track; the transmission part lift/lower support members, the support members forms placement area for goods. Half of the transmission part is buried inside a belt guide channel on the vertical guide track, the other half is located inside the vertical guide track or is flush with the groove opening of the vertical guide track. The present invention occupies less space inside the freight compartment, thus facilitating loading/unloading goods to/from the freight compartment.

Abstract: This application discloses a fault protection method, including: A first node determines that a first cross-domain node is faulty. The first node is a head node of a segment routing best effort SR-BE service tunnel, the SR-BE tunnel is a cross-domain tunnel that passes through a first IGP domain and a second IGP domain, the SR-BE tunnel passes through the first cross-domain node, and the first cross-domain node is a node that crosses the first IGP domain and the second IGP domain. The first node switches a service transmission path from the SR-BE tunnel to a backup tunnel. The backup tunnel does not pass through the first cross-domain node, and the backup tunnel is a tunnel with a strict explicit path.

Abstract: A vehicle airflow system includes a centrifugal fan and an air diffuser. The centrifugal fan is configured to direct air radially outward from a rotational axis of the fan. The air diffuser has a plurality of air deflectors that are disposed radially about the fan. The air deflectors have curved surfaces. Each curved surface defines an airflow channel that has an inlet extending radially outward from a periphery of the centrifugal fan and an outlet extending axially away from the diffuser relative to the rotational axis of the fan.

Abstract: A header tank of a heat exchanger. The header tank includes a housing defining a coolant chamber through which coolant flows. The header tank further includes a flow control member, which extends into the coolant chamber. The flow control member is configured to advantageously reduce swirling of coolant in the coolant chamber, reduce velocity of coolant in the coolant chamber, and reduce liquid pressure drop of the heat exchanger.

Abstract: A message transmission method is provided. A processor that implements a first client, corresponding to a first account, determines a second account which performs message interaction with the first account, the second account corresponding to a second client. The first client transmits to the second client a preset link that is usable for playing a target media file at the second client, the target media file being currently played at the first client. The first client transmits and receives a message between the first account and the second account based on the target media file being played at the first client and the second client, the message being displayed on a first preset page of the first client.

Abstract: A vehicle airflow system includes a centrifugal fan and an air diffuser. The centrifugal fan is configured to direct air radially outward from a rotational axis of the fan. The air diffuser has a plurality of air deflectors that are disposed radially about the fan. The air deflectors have curved surfaces. Each curved surface defines an airflow channel that has an inlet extending radially outward from a periphery of the centrifugal fan and an outlet extending axially away from the diffuser relative to the rotational axis of the fan.

Abstract: A header tank of a heat exchanger. The header tank includes a housing defining a coolant chamber through which coolant flows. The header tank further includes a flow control member, which extends into the coolant chamber. The flow control member is configured to advantageously reduce swirling of coolant in the coolant chamber, reduce velocity of coolant in the coolant chamber, and reduce liquid pressure drop of the heat exchanger.

Abstract: A message transmission method is provided. A processor that implements a first client, corresponding to a first account, determines a second account which performs message interaction with the first account, the second account corresponding to a second client. The first client transmits to the second client a preset link that is usable for playing a target media file at the second client, the target media file being currently played at the first client. The first client transmits and receives a message between the first account and the second account based on the target media file being played at the first client and the second client, the message being displayed on a first preset page of the first client.