Novatek Microelectronics Corp.

Yuan-Po Cheng

Hung-Ming Wang

Cheng Hsien Li

A device and method for blending image data and the alpha channel and reconstructing to obtain the image again after transmission. An encoder blends the alpha channel and the red-green-blue (RGB) image data through a layer blending method that is supported by the general application processor (AP). Transporter image data, such as a checkerboard pattern, is blended with 1-alpha channel data to obtain a transporter. The blended image data (RGB+alpha) is mixed with the transporter to obtain mixed image data. The mixed image data is then transmitted through the existing transmission interface. After receiving the mixed image data, reconstruction processing is performed by a decoder to obtain the original RGB image data and the alpha channel again.

Method of layer blending and reconstruction based on the alpha channel

An electronic device includes an application processor and a display control circuit. The display control circuit may output a (tearing effect) TE signal to the application processor and receive an image frame from the application processor. A data processing circuit of the display control circuit generates a notification signal when the data processing circuit is ready to receive the image frame from the application processor. The timing controller generates the TE signal having a first frequency during a period from a first time point when the notification signal is received to a second time point when the application processor starts transmitting the image frame to the data processing circuit. The first frequency is greater than a reference frequency based on an output frame rate of the display control circuit.

Electronic device and operating method thereof

A method for generating a plurality of on-screen display (OSD) data is used in a back-end (BE) circuit. The BE circuit is configured to process a plurality of image data to be displayed on a display device. The method includes steps of: receiving the plurality of image data from an application processor (AP); and extracting information of a detecting layer embedded in the plurality of image data, wherein the information of the detecting layer indicates the plurality of OSD data corresponding to at least one user-interface (UI) layer in the plurality of image data.

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Hsinchu County, Taiwan

Yuan-Po Cheng