| 摘要 |
A radio frequency tuning system and method. A tuner circuit selectively tunes to only a radio frequency signal of a specific frequency channel among radio frequency signals received through an antenna. A key input unit inputs channel up/down commands so that the corresponding radio frequency channels can be tuned by the tuner circuit. A microcomputer functions to, when the channel up/down commands are successively inputted through the key input unit, send only PLL data based on the last inputted one of the inputted channel up/down commands to the tuner circuit. Therefore, it is possible to eliminate a stabilization time required for every key operation of a radio receiver user so as to perform a faster channel search operation in an auto channel search mode.
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