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US 8,026,981 B2Granted
Method of intelligently selecting a signal source and associated apparatus
AssigneeMStar Semiconductor, Inc.
InventorHer-Ming Jong
Life of this patent
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Abstract
A method of intelligently selecting a signal source and associated apparatus is provided. The method comprises the following steps. A display is activated. The display detects activities of a plurality of connection ports to determine at least one active video source. The display displays an image according to the at least one active video source and/or a priority. The connection ports can be an HDMI port, a DVI port, an A/V port or a Y/Pb/Pr port.
Claims9
A display capable of intelligently selecting a source, comprising:
- a plurality of connection ports for receiving a plurality of signals from a plurality of sources;
- and
- a control chip coupled to the connection ports, wherein the control chip determines at least one active source among the sources by detecting an activity of the connection ports and the control chip controls the display to show an image according to said at least one active source, the control chip comprising:
- an input end for receiving signals corresponding to the active source;
- a current source coupled to the input end for providing a current to the input end;
- an analog-to-digital converter (ADC) coupled to the input end for measuring a voltage value of the input end;
- and
- an audio-video judgment device coupled to the ADC for determining a type of the active source according to the voltage value.
5 more elements
Dependencies are inferred from the claim text.