Abstract: Disclosed herein are related to a system and a method of remotely rendering artificial reality. In one approach, a console determines an expected transmission end time of a first session for wireless transmission of image data indicating an image of artificial reality to a head wearable display. In one approach, the console determines an expected process end time of generating additional data associated with the image of the artificial reality. In one approach, the console compares the expected transmission end time and the expected process end time. The console may transmit, to the head wearable display in the first session, the additional data together with the image data, in response to the expected process end time being less than the expected transmission end time.

Abstract: Disclosed herein are related to a first device to communicate with a second device and a third device. In one aspect, the first device determines a first time interval to receive a first beacon frame from the second device. In one aspect, the first device determines, according to the first time interval, a second time interval for the first device to transmit a second beacon frame to a third device. In one aspect, the first device determines a third time interval to operate the first device in a wake up mode. The third time interval may encompass the first time interval and the second time interval. In one aspect, the first device receives the first beacon frame from the second device during the first time interval, and transmits the second beacon frame to the third device during the second time interval.

Abstract: Disclosed herein are related to resuming a wireless communication between a first device and a second device. In one aspect, the first deice enters a wake up mode from a sleep mode. In one aspect, the first device obtains, in response to entering the wake up mode, stored information indicating a wireless channel previously used to communicate with a second device, to monitor for a beacon frame from the second device. In one aspect, the first device receives the beacon frame from the second device, according to the stored information. In one aspect, the first device transmits to the second device, an association frame in response to receiving the beacon frame.

Abstract: The present invention provides a health file access control system and method in an electronic medical cloud. The system comprises: a medical management center unit configured to generate a system public key and a system private key, and generate a private key for corresponding utilizer's attributes according to the system public key, the system private key, and a set of utilizer's attributes; an electronic medical cloud storage unit configured to receive and store a privacy-protected health file ciphertext; and at least one health file user access unit configured to encrypt the health file according to the system public key to obtain the privacy-protected health file ciphertext, and/or generate the set of utilizer's attribute, and decrypt the privacy-protected health file ciphertext according to the system public key and the private key for utilizer's attributes.

Abstract: A broadband interferometer lightning positioning method based on pulse matching and a system thereof that improves the positioning accuracy of the interferometer to the lightning radiation source. The method includes acquiring a very high frequency radiation pulse signal set of lightning; determining a first very high frequency radiation pulse signal within a set time period as a reference pulse signal; determining a first comparison pulse signal, and determining a second comparison pulse signal; moving both the first comparison pulse signal and the second comparison pulse signal to the position corresponding to the reference pulse signal using the cross-correlation algorithm to obtain a pulse signal set, simultaneously covering each pulse signal in the pulse signal set using a sliding window with a set width to determine the position of the lightning radiation source.

Abstract: Disclosed herein a system, a method and a device for dynamic scheduling between a head wearable display and a console is provided. The head wearable display can initiate, at a first time instance, a first downlink transmission to the console. The head wearable display can dynamically indicate, to the console, an end of the first downlink transmission, at a second time instance when transfer of data of the first downlink transmission is complete. The head wearable display can dynamically cause, relative to the second time instance, the console to begin an uplink transmission. The head wearable display can receive an indication to dynamically start a second downlink transmission, at a third time instance when transfer of data of the uplink transmission is complete.

Abstract: Disclosed herein are systems, devices and methods related to a wireless communication. In one aspect, a device determines a first metric according to a first data rate and a first power consumption of communication through a first antenna of the device. In one aspect, the device determines a second metric according to a second data rate and a second power consumption of communication through the first antenna and a second antenna of the device. In one aspect, the device selects one or more of the first antenna and the second antenna for communication with another device, according to the first metric and the second metric. In one aspect, the device communicates through the one or more of the first antenna and the second antenna.

Abstract: Disclosed herein are devices and methods related to an interface between a host processor and a wireless processor of a first device for maintaining an artificial reality session with a second device. In one aspect, the host processor is configured to provide data of the artificial reality session to the wireless processor, and the wireless processor is configured to transmit the data to the second device through a wireless medium. In one aspect, the host processor is configured to provide an indicator indicating an end of transmission of the data, to the wireless processor, to cause the wireless processor to transmit the indicator to the second device through the wireless medium, and to cause the host processor and the wireless processor to enter a sleep state in response to transmission of the indicator. The indicator may cause the second device to enter the sleep state.

Abstract: Systems and methods for beamforming include a device including at least one of a head wearable display (HWD) or a console. The device establishes a first connection between an active HWD radio-frequency integrated circuit (RFIC) and an active console RFIC. The device compares a modulation and coding scheme (MCS) of the first connection to an MCS threshold. The device performs MCS measurements for a second connection of at least one of an idle HWD RFIC or an idle console RFIC, while the first connection is maintained, in response to the MCS not satisfying the MCS threshold. The device compares the MCS measurements of the second connection to the MCS threshold. The device switches to the second connection when at least one of the one or more MCS measurements satisfies the MCS threshold and/or above the MCS of the first connection.

Abstract: Disclosed herein are related to a first device to communicate with an access point and a second device. In one aspect, the first device determines a first time interval for wireless communication between the first device and the access point. In one aspect, the first device determines a second time interval to prevent wireless communication between the first device and the access point. In one aspect, the first device determines a third time interval within the second time interval for wireless communication between the first device and the second device. In one aspect, the first device communicates with the access point during the first time interval. In one aspect, the first device communicates with the second device as a soft access point during the third time interval.

Abstract: Disclosed herein are related to coordinating communication among a first access point, a first station device, a second access point, and a second station device. In one aspect, the second access point receives, from the first access point, a first beacon of the first access point at a first beacon transmission time. The first beacon may indicate an offset between the first beacon transmission time of the first beacon and a first data transmission time of the first access point for communication between the first access point and a first station device. In one aspect, the second access point may determine, according to the offset, a second data transmission time of the second access point to be distinct from the first data transmission time of the first access point. The second access point may communicate with a second station device, according to the second data transmission time.

Abstract: In some embodiments, a device includes a light-emitting display, and an optical emitter positioned behind the light-emitting display. The optical emitter is configured to emit light through the light-emitting display. A processor is configured to synchronize a first illumination timing of the optical emitter and a second illumination timing of the light-emitting display. In some embodiments, a device includes an optical transceiver processor and a display processor. The display processor is configured to output timing information to a light-emitting display and to the optical transceiver processor, and the optical transceiver processor is configured to cause an optical transceiver to emit or receive light in synchronization with the timing information output by the display processor.

Abstract: Disclosed herein a system, a method and a device for dynamic scheduling between a head wearable display and a console is provided. The head wearable display can initiate, at a first time instance, a first downlink transmission to the console. The head wearable display can dynamically indicate, to the console, an end of the first downlink transmission, at a second time instance when transfer of data of the first downlink transmission is complete. The head wearable display can dynamically cause, relative to the second time instance, the console to begin an uplink transmission. The head wearable display can receive an indication to dynamically start a second downlink transmission, at a third time instance when transfer of data of the uplink transmission is complete.

Abstract: Systems and methods for iterative distributed beam selection include a device including at least one of a first head wearable display (HWD), a second HWD, a first console or a second console. The device detects a predefined condition. The device performs a first distributed beam selection responsive to detecting the predefined condition. Performing the first distributed beam selection includes performing beamforming to provide a first plurality of beams for a first link between the first HWD and the first console, selecting a first beam of the first link with a highest signal-to-interference-plus-noise ratio (SINR) from the first plurality of beams, performing beamforming to provide a second plurality of beams for a second link between the second HWD and the second console while the first beam of the first link is active, and selecting a second beam of the second link with a highest SINR from the second plurality of beams.

Abstract: Disclosed herein are a system, a method and a device for switching between different communications protocols. A head wearable display can transmit, to a console during a first session interval, a first request to switch from a first link using a first communication protocol to a second link using a second communication protocol. The first request can include at least one characteristic of the first link. The head wearable display can receive, from the console, a first response to the first request, to perform a switch from the first link to the second link. The first response can indicate a wake up time and a second session interval to perform the switch. The head wearable display can switch from the first link to the second link in the second session interval and after the wake up time.

Abstract: Disclosed herein are devices and methods related to an interface between a host processor and a wireless processor of a first device for maintaining an artificial reality session with a second device. In one aspect, the host processor is configured to provide data of the artificial reality session to the wireless processor, and the wireless processor is configured to transmit the data to the second device through a wireless medium. In one aspect, the host processor is configured to provide an indicator indicating an end of transmission of the data, to the wireless processor, to cause the wireless processor to transmit the indicator to the second device through the wireless medium, and to cause the host processor and the wireless processor to enter a sleep state in response to transmission of the indicator. The indicator may cause the second device to enter the sleep state.

Abstract: An optical sensing system includes a transmitter side and a receiver side, and is configured to be positioned below a display of an electronic device. The transmitter side includes a light emitter, a temperature sensor, and a photodiode. The receiver side includes a photodiode and a temperature sensor. The optical sensing system includes an application-specific integrated circuit that leverages the temperature sensors, the photodiodes, and one or more signal filters such as a high-pass filter to perform multiple field calibrations of the optical sensing system, thereby improving accuracy and precision thereof.

Abstract: In some embodiments, a device includes a light-emitting display, and an optical emitter positioned behind the light-emitting display. The optical emitter is configured to emit light through the light-emitting display. A processor is configured to synchronize a first illumination timing of the optical emitter and a second illumination timing of the light-emitting display. In some embodiments, a device includes an optical transceiver processor and a display processor. The display processor is configured to output timing information to a light-emitting display and to the optical transceiver processor, and the optical transceiver processor is configured to cause an optical transceiver to emit or receive light in synchronization with the timing information output by the display processor.

Abstract: An electronic device may have a display with an array of pixels configured to display images for a user. The electronic device may have an ambient light sensor for gathering ambient light information. The ambient light sensor may be at least partially covered by the display. The ambient light sensor may be switched into use during blanking periods when a portion of the display overlapping with the display is temporarily turned off. The ambient light sensor may include a photodetector, a first stage with an amplifier, first and second capacitors selectively coupled across the amplifier, and a second accumulation stage. During blanking time, the first capacitor may integrate photodetector current. During non-blanking, the charge stored in the first capacitor may be transferred to the second accumulation stage while the second capacitor applies an offset voltage to the photodetector to prevent undesired charge injection into the photodetector.

Abstract: An electronic device may have a display with an array of pixels configured to display images for a user. The electronic device may have an ambient light sensor for gathering ambient light information. The ambient light sensor may be at least partially covered by the display. The ambient light sensor may be switched into use during blanking periods when a portion of the display overlapping with the display is temporarily turned off. The ambient light sensor may include a photodetector, a first stage with an amplifier, first and second capacitors selectively coupled across the amplifier, and a second accumulation stage. During blanking time, the first capacitor may integrate photodetector current. During non-blanking, the charge stored in the first capacitor may be transferred to the second accumulation stage while the second capacitor applies an offset voltage to the photodetector to prevent undesired charge injection into the photodetector.