公开(公告)号：US09245474B2

公开(公告)日：2016-01-26

申请号：US14135592

申请日：2013-12-20

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Pin Tsai ,  Jen-Chung Chang

IPC: G06F3/038 ,  G09G3/20 ,  G09G5/00

CPC classification number: G09G3/2096 ,  G09G5/008 ,  G09G2310/08 ,  G09G2340/0435 ,  G09G2360/12

Abstract: A display driving device and a method for driving a display are provided. The display driving device includes a host and a driving chip. The host transmits an image data and a synchronization signal. The driving chip receives the image data and the synchronization signal and drives a display panel to display frames. The driving chip includes a storage unit, a driving module, and a control circuit. The storage unit stores the image data. The driving module drives the display panel to display the frames according to the image data from the host and a timing generator frequency of the driving module. The control circuit detects a target frequency of the synchronization signal and the timing generator frequency of the driving module, compares the target frequency and the timing generator frequency, outputs an adjustment value according to the comparison result, and adjusts the timing generator frequency of driving module.

Abstract translation: 提供了一种用于驱动显示器的显示驱动装置和方法。 显示驱动装置包括主机和驱动芯片。 主机发送图像数据和同步信号。 驱动芯片接收图像数据和同步信号，并驱动显示面板显示帧。 驱动芯片包括存储单元，驱动模块和控制电路。 存储单元存储图像数据。 驱动模块驱动显示面板根据来自主机的图像数据和驱动模块的定时发生器频率显示帧。 控制电路检测同步信号的目标频率和驱动模块的定时发生器频率，比较目标频率和定时发生器频率，根据比较结果输出调整值，并调整驱动模块的定时发生器频率 。

公开(公告)号：US11490481B2

公开(公告)日：2022-11-01

申请号：US17218068

申请日：2021-03-30

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Chung Chang ,  Yi-Nung Hu

IPC: H05B45/325

Abstract: A pulse width modulation (PWM) driver and an operation method thereof are provided. The PWM driver includes a PWM generating circuit and multiple driving channels. The PWM generating circuit generates multiple PWM signals. The driving channels drive multiple light emitting elements of a light emitting element array. Each of the driving channels includes a PWM selection circuit. The PWM selection circuits are coupled to the PWM generating circuit to receive the PWM signals. Each of the PWM selection circuits selects a PWM signal from the PWM signals according to corresponding sub-pixel data. The selected PWM signal is output to at least one corresponding light emitting element among the light emitting elements.

公开(公告)号：US20220322509A1

公开(公告)日：2022-10-06

申请号：US17218068

申请日：2021-03-30

Applicant: Novatek Microelectronics Corp.

Inventor： Jen-Chung Chang ,  Yi-Nung Hu

IPC: H05B45/325

Abstract: A pulse width modulation (PWM) driver and an operation method thereof are provided. The PWM driver includes a PWM generating circuit and multiple driving channels. The PWM generating circuit generates multiple PWM signals. The driving channels drive multiple light emitting elements of a light emitting element array. Each of the driving channels includes a PWM selection circuit. The PWM selection circuits are coupled to the PWM generating circuit to receive the PWM signals. Each of the PWM selection circuits selects a PWM signal from the PWM signals according to corresponding sub-pixel data. The selected PWM signal is output to at least one corresponding light emitting element among the light emitting elements.

公开(公告)号：US20150123963A1

公开(公告)日：2015-05-07

申请号：US14135592

申请日：2013-12-20

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Pin Tsai ,  Jen-Chung Chang

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G5/008 ,  G09G2310/08 ,  G09G2340/0435 ,  G09G2360/12

Abstract: A display driving device and a method for driving a display are provided. The display driving device includes a host and a driving chip. The host transmits an image data and a synchronization signal. The driving chip receives the image data and the synchronization signal and drives a display panel to display frames. The driving chip includes a storage unit, a driving module, and a control circuit. The storage unit stores the image data. The driving module drives the display panel to display the frames according to the image data from the host and a timing generator frequency of the driving module. The control circuit detects a target frequency of the synchronization signal and the timing generator frequency of the driving module, compares the target frequency and the timing generator frequency, outputs an adjustment value according to the comparison result, and adjusts the timing generator frequency of driving module.

Abstract translation: 提供了一种用于驱动显示器的显示驱动装置和方法。 显示驱动装置包括主机和驱动芯片。 主机发送图像数据和同步信号。 驱动芯片接收图像数据和同步信号，并驱动显示面板显示帧。 驱动芯片包括存储单元，驱动模块和控制电路。 存储单元存储图像数据。 驱动模块驱动显示面板根据来自主机的图像数据和驱动模块的定时发生器频率显示帧。 控制电路检测同步信号的目标频率和驱动模块的定时发生器频率，比较目标频率和定时发生器频率，根据比较结果输出调整值，并调整驱动模块的定时发生器频率 。