Patent ID: 8155705
Filing Date: 2012-04-10
Classification: G09G,H04M

Abstract:
1. A display screen comprising: a receiving module receiving wireless signals of incoming calls and converting the wireless signals of incoming calls to electronic signals; a control module storing contact information, ringtones, and links of ringtones to contacts, the control module determining whether a telephone number included in the electronic signals has a link to the stored contact information and a corresponding ringtone, the control module generating backlight control signals corresponding to the determining result; and a backlight drive module receiving the backlight control signals and driving a backlight module to dynamically flash according to the backlight control signals; wherein the backlight drive module includes a digital to analog conversion unit and a backlight drive module circuit, the digital to analog conversion unit converts the backlight control signals into analog signals and then transmits the analog signals to the backlight drive module circuit to drive the backlight module.