Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for efficiently transmitting uplink signals to a base station using shared antennas. A first device may be in communications with a base station using local antennas and may identify a second device having auxiliary antennas available for transmitting uplink signals to the base station. Because the local antennas and auxiliary antennas may have different capabilities (e.g., due to different power or other constraints), the first device may generate first uplink signals for transmission using the local antennas differently from second uplink signals for transmission using the auxiliary antennas. The first device may transmit the first uplink signals to the base station using the local antennas and transmit the second uplink signals to the second device for transmission to the base station using the auxiliary antennas based on different configurations.

Embodiments of the disclosure relate to a receiving card, which includes: a circuit board and a programmable logic device, a memory device, a plug-in component, a physical layer transceiver group and a plurality of Ethernet interfaces arranged on the circuit board. The memory device and the plug-in component are electrically connected with the programmable logic device; the plurality of Ethernet interfaces are respectively and electrically connected with a plurality of SerDes channels configured by the programmable logic device through the physical layer transceiver group; each of the plurality of SerDes channels includes two pairs of differential signal lines, and one of the two pairs of differential signal lines is used for transmitting data and the other pair of differential signal lines is used for receiving data.

A substitute image generating section generates a substitute image corresponding to second image data on the basis of first image data. According to success or failure of reception of the second image data, a display control section causes either one of the to-be-displayed image generated on the basis of the second image data and the substitute image generated on the basis of the first image data to be displayed. The substitute image generating section starts the generation of the substitute image corresponding to the second image data based on the first image data before the success or failure of the reception of the second image data is confirmed.

An augmented reality system to perform operations that include: accessing image data at a client device; determining a position of a user of the client device based on the image data; causing display of a projection that extends from the position of the user upon a presentation of the image data at the client device; detecting an intersection of the projection and a surface of an object; generating a request that includes an identification of the portion of the surface of the object at the client device; and presenting the portion of the surface of the object based on the graphical property of the projection at the client device in response to the request that includes the identification of the portion of the surface of the object.

The system comprises a first data processing system, a second data processing system, and a server. The system further includes four screens. The first and third screen comprises a video stream and an audio stream. The second and fourth screen comprises a video stream displaying visual contents of a first document that is to be digitally signed by the first and second user. The first and second data processing systems are configured to receive a first and second unique signature from the first and second user, respectively, and add it to the first document. The server is configured to coordinate communication between the first and second data processing systems, record the visual contents of the first screen, the second screen, the third screen and the fourth screen, and store the recording.

A low voltage drive circuit includes a transmit digital to analog circuit (DAC), a receive analog DAC and a drive sense circuit configured to receive transmit digital data. The transmit DAC is configured to convert transmit digital data into an analog outbound data signal and the receive analog DAC is configured to convert an analog outbound data signal into an analog transmit signal. The drive sense circuit is configured to drive the analog transmit signal on to a bus coupled to the low voltage drive circuit as a signal that varies loading on the bus at a first frequency to represent the analog outbound data signal. The drive sense circuit is further configured to receive an analog receive signal from the bus at a second frequency, convert the analog receive signal into an analog inbound data signal, convert the analog inbound data signal into received digital data, and output the received digital data.

A method is provided. The method includes: creating at least two projected-screen receiving sources according to a local IP address and at least two idle port numbers, and generating respective stream pushing addresses of the at least two projected-screen receiving sources, so that at least two screen projecting terminals obtain the respective stream pushing addresses in a one-to-one correspondence; establishing, for each of the at least two projected-screen receiving sources, a screen-projection connection between the projected-screen receiving source and a screen projecting terminal obtaining a stream pushing address of the projected-screen receiving source; and. receiving, by each of the at least two projected-screen receiving sources, projected-screen data pushed by the corresponding screen projecting terminals in screen-projection connection with the projected-screen receiving source.

An electronic device, method and computer program product enable detecting user attention to dynamic content and enabling subsequent user access. The electronic device includes display device(s), a memory containing application(s) and a content monitoring supervisor (CMS) application, and a controller. The controller is communicatively coupled to the display device(s) and the memory and which executes the CMS application to configure the electronic device to perform functionality. The functionality includes retrieving content requested by the application(s). The functionality includes presenting at least a portion of the content on the display device(s). The functionality includes storing information associated with a particular portion of the content in response to determining that the particular portion has been viewed by a user of the electronic device for more than a time threshold. The functionality includes enabling access to the stored information by a second user in response to authenticating supervisory credentials of the second user.

Various example embodiments described herein relate to a method for synchronizing liquid crystal display (LCD) screens. In some examples, the method includes establishing, by a first device comprising a processor, a master/slave relationship with one or more other devices; determining, by the first device, a frequency associated with turning on a first LCD screen on the first device; and sending, by the first device, a signal to each of the one or more other devices, wherein the signal comprises an instruction to turn on an LCD screen on each receiving device at a same time as the first LCD screen.

A Secured Keyboard Video and Mouse (SKVM) system for selectively controlling a plurality of individual computers by a single set comprising a keyboard, a pointing device and at least one video monitor (in some cases, can be controlled also by computer), the SKVM comprising separate electrical circuits for transmitting the display sources, the pointing device and keyboard communications.