Abstract: The present application provides an audio and video playing system, a playing method and a playing device. The system comprises: a display device; a directional sound output module configured to output a directional sound signal; a tracking element configured to monitor a target visual area and to monitor the target display area on the display screen; and a processor, connected with the directional sound output module and the tracking element respectively, and configured to acquire a first audio and video data to be output in the target display area, display image information of the first audio and video data in the target display area, and output sound information of the first audio and video data to the directional sound output module such that the directional sound output module output a directional sound signal towards the target visual area.

Abstract: The present disclosure provides an image compression method, including steps of: acquiring a human-eye fixation point on an original image, and determining a fixation region and a non-fixation region of the original image according to the human-eye fixation point; and compressing the non-fixation region, and generating a compressed image according to the fixation region and the compressed non-fixation region. The present disclosure also provides an image display method, an image compression apparatus, an image display apparatus, and a computer readable medium.

Abstract: Embodiments of this application provide a data service handover method and an apparatus. The method includes: a terminal device detects failure of a secondary cell group; and the terminal device starts a timer, and if a network device has not handed over to a master base station within a timing duration of the timer a data service transmitted by the secondary cell group, when the timer expires, the terminal device notifies the network device to hand over the data service to the master base station.

Abstract: Embodiments of this application disclose a package structure and a communications device to which the package structure is applied. The package structure includes a substrate, a die, and a bonding layer configured to bond the die to the substrate. Charged particles are disposed in the bonding layer. An electrode is disposed on a surface of the die away from the bonding layer. A potential of the electrode is opposite to that of the charged particle. The package structure further includes a first shielding structure. A potential of the substrate is zero. The first shielding structure is located on an outer surface of the die and is located between the bonding layer and the electrode, to prevent the charged particles from migrating to the electrode.