Abstract: A head-up display and a vehicle are disclosed. The head-up display includes an image generating device and an optical module. The optical module includes at least a first optical component, a second optical component, and a third optical component. The image generating device emits a first projection light to the first optical component. The second optical component receives the first projection light reflected or transmitted by the first optical component and changes a polarization direction of the first projection light to obtain a second projection light, and reflects the second projection light back to the first optical component. The third optical component receives the second projection light reflected or transmitted by the first optical component and changes a polarization direction of the second projection light to obtain a third projection light, and reflects the third projection light back to the first optical component.

Abstract: An apparatus and method for controlling a video call, and a video calling system are disclosed. The apparatus for controlling a video call includes: a transceiver configured to receive, in a display time period, video information of a remote party and transmit video information of a local party; a processor communicatively connected to the transceiver; and a memory having stored thereon instructions which, when executed by the processor, cause the processor to: control, at least in a collection time period, the video collector to collect the video information of the local party, and control, in the collection time period, the video collector to be aligned with a face of the local party; and control, in the collection time period, the display apparatus to be in a non-display state, and control, in the display time period, the display apparatus to display a video of the remote party according to the video information of the remote party.

Abstract: An apparatus and method for controlling a video call, and a video calling system are disclosed. The apparatus for controlling a video call includes: a transceiver configured to receive, in a display time period, video information of a remote party and transmit video information of a local party; a processor communicatively connected to the transceiver; and a memory having stored thereon instructions which, when executed by the processor, cause the processor to: control, at least in a collection time period, the video collector to collect the video information of the local party, and control, in the collection time period, the video collector to be aligned with a face of the local party; and control, in the collection time period, the display apparatus to be in a non-display state, and control, in the display time period, the display apparatus to display a video of the remote party according to the video information of the remote party.