US 12,328,801 B2
LED control system and driver, data transmission method, electronic device, controller and storage medium
Jong Dae Kim, Beijing (CN); Youngjin Lim, Beijing (CN); and Chenghui Yan, Beijing (CN)
Assigned to Beijing Xianxin Technology Co., Ltd., Beijing (CN)
Filed by Beijing Xianxin Technology Co., Ltd., Beijing (CN)
Filed on Jan. 6, 2023, as Appl. No. 18/094,336.
Application 18/094,336 is a continuation of application No. PCT/CN2020/112821, filed on Sep. 1, 2020.
Claims priority of application No. 202010659935.6 (CN), filed on Jul. 10, 2020.
Prior Publication US 2023/0142268 A1, May 11, 2023
Int. Cl. H05B 45/10 (2020.01); G09G 3/34 (2006.01); H05B 47/18 (2020.01)
CPC H05B 45/10 (2020.01) [G09G 3/3406 (2013.01); H05B 47/18 (2020.01); G09G 2320/0626 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light emitting diode (LED) control system, comprising: a controller and a plurality of cascaded LED drivers;
the controller is configured to: send a data signal to the plurality of cascaded LED drivers, wherein the data signal comprises data packets corresponding to the plurality of LED drivers arranged in sequence, and each LED driver corresponds to a data packet that comprises control data and an end bit corresponding to the LED driver;
the LED driver comprises a bypass switch; the LED driver is configured to: acquire control data of a preset length from the controller or a previous LED driver, and detect whether the end bit is a preset value; if it is detected that the end bit is the preset value and there is a next LED driver, set a bypass flag to a first state value; wherein when the bypass flag is the first state value, the bypass switch is turned on to transmit a data signal after the end bit to the next driver; when the bypass flag is not the first state value, the bypass switch is turned off; wherein the preset value is 0 or 1, and remains unchanged during a data signal transmission process;
wherein each of the data packets corresponding to the plurality of LED drivers arranged in sequence further comprises a preamble code field located before the control data, so that the data packet corresponding to each LED driver comprises the control data corresponding to the LED driver, the preamble code field located before the control data, and the end bit;
when storing the acquired control data, the LED driver is configured to: detect whether the preamble code field is correct; if the preamble code field is correct, store the control data after the preamble code field after detecting that the preamble code field is correct.