| 摘要 |
PROBLEM TO BE SOLVED: To provide a receiver which stably performs the auto search and the auto preset. SOLUTION: The receiver comprises a receiving unit 3 for reproducing audio detect signals Cau and demodulate synchronizing signals Csync from receive signals Sin produced across a receiving antenna 2, a level detector 4 for detecting a sound detect signal Cau to output a detect signal showing the effective receiving condition or not; a continuous decider 6 for deciding whether the decoded synchronizing signals Csync are continuously reproduced at a high frequency in time, to output a decision signal Eus showing that there is a stability when they are continuously reproduced at a high frequency, and a decision signal Eus showing that there is no stability when they are not continuously reproduced at a high frequency; and a controller 7 which decides that an effective channel is now being received with the input of the decision signal Eus to show that there is a stability, and the detect signal Sd to show the effective reception. When the controller decides that the effective channel is being received now, it stores information of a tuned frequency at this time to make the auto search and the auto preset. COPYRIGHT: (C)2006,JPO&NCIPI
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