Abstract: Disclosed in embodiments of the present disclosure are a communication method and apparatus, and an electronic device. A specific implementation of the method comprises: in response to a call initiation operation of a multimedia conference, determining a candidate object of the multimedia conference according to an object targeted by the call initiation operation; and displaying, on a multimedia conference interface of the multimedia conference, call state information for the candidate object.

Abstract: The present disclosure relates to the field of display technology, and provides driving methods of a display panel and a display device.

Abstract: The present disclosure relates to the field of display technology, and provides driving methods of a display panel and a display device.

Abstract: The present disclosure provides a driving method and system for an OLED display panel. The driving method for the OLED display panel includes: controlling a gate line driving circuit of the display panel for each frame image to sequentially output a scanning signal to each gate line of the display panel; and when the gate line driving circuit of the display panel starts to output the scanning signal to one gate line, timing from a starting scanning time of the same scanning gate line; and after the scanning time of the current scanning gate line reaches a preset fixed scanning time, controlling the gate line driving circuit of the display panel to stop outputting the scanning signal to the current scanning gate line. Therefore, the present disclosure does not need to change the gamma curve when the refresh frequency is changed, and screen flicker will not occur, and a seamless dynamic refresh switching of the display panel is realized.

Abstract: A driving method includes: determining a starting luminance LS of a to-be-adjusted frame image; determining an average luminance LAVE(n) of the to-be-adjusted frame image during a nth duty period; determining a reference luminance flow rate ?L that indicates a current change rate of a storage capacitor storing a data signal for a display element; determining a time length TF of a reference frame image; determining a number k of black strips in the to-be-adjusted frame image; calculating a duty ratio of a pulse driving signal of the to-be-adjusted frame image during the nth duty period based on the starting luminance LS, the average luminance LAVE(n), the reference luminance flow rate ?L, the time length TF, and the number k of the black strips; and driving to display the to-be-adjusted frame image by the adjusted pulse driving signal.

Abstract: The present disclosure provides a display driving device, method and an OLED display device, and the display driving device includes: an interface module, configured to receive image data of a display chip and sending a first scanning signal in each of frame periods; a frame buffer, configured to send a buffer signal after receiving the first scanning signal from the interface module; a timing controller, configured to send a second scanning signal to the display panel according to the buffer signal sent by the frame buffer; in response to the display driving device is switched from a screen self-refresh mode to a vertical synchronization mode, the delay time between the second scanning signal and the buffer signal gradually decreases, one frame period by one frame period, to zero or gradually increases, one frame period by one frame period, to duration of one frame period.

Abstract: A driving method includes: determining a starting luminance LS of a to-be-adjusted frame image; determining an average luminance LAVE(n) of the to-be-adjusted frame image during a nth duty period; determining a reference luminance flow rate ?L that indicates a current change rate of a storage capacitor storing a data signal for a display element; determining a time length TF of a reference frame image; determining a number k of black strips in the to-be-adjusted frame image; calculating a duty ratio of a pulse driving signal of the to-be-adjusted frame image during the nth duty period based on the starting luminance LS, the average luminance LAVE(n), the reference luminance flow rate ?L, the time length TF, and the number k of the black strips; and driving to display the to-be-adjusted frame image by the adjusted pulse driving signal.

Abstract: The present disclosure provides a display driving device, method and an OLED display device, and the display driving device includes: an interface module, configured to receive image data of a display chip and sending a first scanning signal in each of frame periods; a frame buffer, configured to send a buffer signal after receiving the first scanning signal from the interface module; a timing controller, configured to send a second scanning signal to the display panel according to the buffer signal sent by the frame buffer; in response to the display driving device is switched from a screen self-refresh mode to a vertical synchronization mode, the delay time between the second scanning signal and the buffer signal gradually decreases, one frame period by one frame period, to zero or gradually increases, one frame period by one frame period, to duration of one frame period.

Abstract: The present disclosure provides a driving method and system for an OILED display panel. The driving method for the OLED display panel includes: controlling a gate line driving circuit of the display panel for each frame image to sequentially output a scanning signal to each gate line of the display panel; and when the gate line driving circuit of the display panel starts to output the scanning signal to one gate line, timing from a starting scanning time of the same scanning gate line; and after the scanning time of the current scanning gate line reaches a preset fixed scanning time, controlling the gate line driving circuit of the display panel to stop outputting the scanning signal to the current scanning gate line. Therefore, the present disclosure does not need to change the gamma curve when the refresh frequency is changed, and screen flicker will not occur, and a seamless dynamic refresh switching of the display panel is realized.

Abstract: Methods, systems, and apparatus, for an infrared detector are provided. In one aspect, an infrared detector is provided that includes a pyroelectric sensor; a controller for receiving a trigger signal outputted by the pyroelectric sensor; a thermopile sensor, wherein the controller starts the thermopile sensor after receiving the trigger signal output by the pyroelectric sensor; and an alarm, wherein the controller controls the alarm to generate an alarm signal in response to a determination that a difference between a current temperature and a background temperature detected by the thermopile sensor is larger than a threshold value and a determination that the areas of the thermopile sensor activated correspond to a human being.

Abstract: Methods, systems, and apparatus, for an infrared detector are provided. In one aspect, an infrared detector is provided that includes a pyroelectric sensor; a controller for receiving a trigger signal outputted by the pyroelectric sensor; a thermopile sensor, wherein the controller starts the thermopile sensor after receiving the trigger signal output by the pyroelectric sensor; and an alarm, wherein the controller controls the alarm to generate an alarm signal in response to a determination that a difference between a current temperature and a background temperature detected by the thermopile sensor is larger than a threshold value and a determination that the areas of the thermopile sensor activated correspond to a human being.

Abstract: Methods, systems, and apparatus, for an infrared detector are provided. In one aspect, an infrared detector is provided that includes a pyroelectric sensor; a controller for receiving a trigger signal outputted by the pyroelectric sensor; a thermopile sensor, wherein the controller starts the thermopile sensor after receiving the trigger signal output by the pyroelectric sensor; and an alarm, wherein when the thermopile sensor determines that a difference between a current temperature and a background temperature is larger than a threshold value, the controller controls the alarm to generate an alarm signal.

Abstract: Methods, systems, and apparatus, for an infrared detector are provided. In one aspect, an infrared detector is provided that includes a pyroelectric sensor; a controller for receiving a trigger signal outputted by the pyroelectric sensor; a thermopile sensor, wherein the controller starts the thermopile sensor after receiving the trigger signal output by the pyroelectric sensor; and an alarm, wherein when the thermopile sensor determines that a difference between a current temperature and a background temperature is larger than a threshold value, the controller controls the alarm to generate an alarm signal.