| 摘要 |
A method of determining the status of a plurality of input ports in a television receiver having a plurality of signal input ports, and including a main-screen signal processor and a sub-screen signal processor, automatically verifies the presence or absence of an input signal at each signal input port. The port status determining method includes detecting signal presence at each of the plurality of signal input ports via the sub-screen signal processor to determine whether the corresponding input signal exists, by sequentially setting an input mode in correspondence to each of the plurality of signal input ports; and recognizing as a valid input port each signal input port at which signal presence is detected. |
