US 12,267,125 B2
Near-field communication control method, near-field communication control device and display device
Qian Chen, Beijing (CN); Hongqiang Luo, Beijing (CN); Xiaofeng Luo, Beijing (CN); Yang Yang, Beijing (CN); and Qiang Wang, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/024,524
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed May 31, 2022, PCT No. PCT/CN2022/096151
§ 371(c)(1), (2) Date Mar. 3, 2023,
PCT Pub. No. WO2023/230814, PCT Pub. Date Dec. 7, 2023.
Prior Publication US 2024/0283485 A1, Aug. 22, 2024
Int. Cl. H04B 5/26 (2024.01); G09G 5/12 (2006.01)
CPC H04B 5/26 (2024.01) [G09G 5/12 (2013.01); G09G 2310/08 (2013.01); G09G 2370/16 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A near-field communication control device for a display device, the display device comprising a display panel, a near-field communication coil and a display control circuit, wherein the display panel comprises a plurality of display periods, and each of the plurality of display periods comprises a field blanking phase and an effective display phase, the near-field communication control device comprises:
a first receiving circuit configured to receive a synchronization signal output from the display control circuit, wherein the display panel displays an image during the effective display phase under the control of the synchronization signal; and
a driving circuit configured to output a driving signal to the near-field communication coil during the field blanking phase, according to the synchronization signal,
the driving circuit comprises:
a processing sub-circuit configured to determine start timings, at each of which the driving signal starts to be output, according to a pre-acquired correspondence between the synchronous signal and the field blanking phase, wherein each of the start timings is in the field blanking phase; and
an output sub-circuit configured to output the driving signal for a preset time period starting from the start timing, the preset time period being less than a preset duration of a back porch period of the field blanking phase.