公开(公告)号：US20210168915A1

公开(公告)日：2021-06-03

申请号：US17172953

申请日：2021-02-10

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Wei-Jen LAI ,  Neng-Chieh HSU ,  Zhen-Guo DING ,  Kang-Fan YEH

IPC: H05B45/325

Abstract: An LED controller is used with a video source and at least one LED unit, and includes a control signal generator and a driver. The control signal generator performs pulse width modulation based on a first clock signal, a second clock signal and a data signal, which is generated by the video source, to generate at least one control signal. The first and second clock signals are independent of a vertical synchronization signal that is generated by the video source. The driver generates, based on the at least one control signal, at least one drive signal that is related to light emission of the at least one LED unit.

公开(公告)号：US20210084725A1

公开(公告)日：2021-03-18

申请号：US16902472

申请日：2020-06-16

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Wei-Jen LAI ,  Neng-Chieh HSU ,  Zhen-Guo DING ,  Kang-Fan YEH

IPC: H05B45/325

Abstract: An LED controller is used with a video source and at least one LED unit, and includes a control signal generator and a driver. The control signal generator performs pulse width modulation based on a first clock signal, a second clock signal and a data signal, which is generated by the video source, to generate at least one control signal. The first and second clock signals are independent of a vertical synchronization signal that is generated by the video source. The driver generates, based on the at least one control signal, at least one drive signal that is related to light emission of the at least one LED unit.