| 摘要 |
An apparatus (100) such as a mobile television signal receiver includes a channel history feature. Methods for adding channels to the channel history, tuning channels from the channel history, and generally maintaining the channel history are provided. According to an exemplary embodiment, a method (400) for adding a channel to channel history includes a step of adding a selected channel to the channel history if the channel meets a criterion (430). According to an exemplary embodiment, a method (500) for tuning channels includes steps of receiving a useable program signal from a first channel (540), testing for presence of a useable program from a second channel without interrupting the receiving step (520), and if the useable program signal from the second channel is detected, tuning the second channel (540). According to an exemplary embodiment, a method (600) for maintaining a channel history includes a step of maintaining a retrieved channel in the channel history if the useable program signal is present (630), and updating the channel history by replacing the retrieved channel with another channel if the useable program signal is not present (640).
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