Patent ID: 11908371
Assignee: STARLIGHT DISPLAY CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. An automatic gamma adjustment system with environmental adaptability, installed in a display device, and provided for automatically correcting a gamma value at any time according to surrounding situation to adjust grayscale layering presented to people, characterized in that:
the automatic gamma adjustment system with environmental adaptability comprises a signal receiving processor, a situation capture processor and a layering control processor, the signal receiving processor selects an image signal source and receives and converts an image signal into a plurality of first YUV signals;
the situation capture processor detects the surrounding situation and captures and obtains at least one environmental data to obtain a gamma control parameter of a display screen of the display device according to calculation of the environmental data;
the layering control processor calculates the environmental data to obtain a maximum brightness current value, while using the gamma control parameter to calculate and convert the first YUV signals into a plurality of second YUV signals, sending the maximum brightness current value and the second YUV signals to the display device for the display screen to display the image according to the maximum brightness current value and the second YUV signals;
the environmental data include at least one of air quality, weather condition and ambient brightness; after the signal receiving processor analyses the image signal to obtain a corresponding image grayscale distribution data, and the layering control processor analyses the image grayscale distribution to highlight a range with concentrated image grayscale distribution, the image signal in the range is used to calculate the gamma control parameter to obtain the second YUV signals corresponding to a full grayscale level, so as to improve fineness of grayscale presented in the range, so that overall too-dark or too-bright image is presented with rich detailed image to satisfy visual experience of human eyes.