| US 7,573,950 B2 | ||
| IBOC broadcasting receiver | ||
| Yasuhiro Shimizu, Kanagawa (Japan) | ||
| Assigned to Kabushiki Kaisha Kenwood, Tokyo (Japan) | ||
| Filed on Jun. 16, 2004, as Appl. No. 10/869,141. | ||
| Claims priority of application No. 2003-175763 (JP), filed on Jun. 20, 2003. | ||
| Prior Publication US 2004/0261132 A1, Dec. 23, 2004 | ||
| Int. Cl. H03K 9/00 (2006.01) | ||
| U.S. Cl. 375—316 [318/701; 320/146; 324/222; 324/223; 327/205; 377/97] | 9 Claims |
| 1. An IBOC broadcasting receiver that uses two different bit error rates as threshold values in receiving hybrid broadcasting
in a simultaneous broadcasting format and switches between digital broadcasting reception and analog broadcasting reception
based on the two threshold values; the IBOC broadcasting receiver comprising:
a counter unit that counts the number of occurrences of switching between digital broadcasting reception and analog broadcasting
reception in a specified period of time; and
a control device that changes a hysteresis width between the two threshold values when the number counted by the counter unit
reaches a specified number,
wherein the counter unit counts the number of occurrences of switching between digital broadcasting reception and analog broadcasting
reception in a specified period of time by using another set of threshold values obtained as a result of the increased hysteresis
width, and the control device changes the hysteresis width between the another set of threshold values when the number counted
by the counter unit reaches a specified number.
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