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    • 23. 发明授权
    • IBOC broadcasting receiver
    • IBOC广播接收机
    • US07573950B2
    • 2009-08-11
    • US10869141
    • 2004-06-16
    • Yasuhiro Shimizu
    • Yasuhiro Shimizu
    • H03K9/00
    • H04H20/31H04N5/4401H04N5/46H04N21/4263H04N21/44209
    • 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 counts the number of occurrences of switching between digital broadcasting reception and analog broadcasting reception in a specified period of time, and increases a hysteresis width between the two threshold values when the number of occurrences of switching counted exceeds a specified number. Further, the counter of the IBOC broadcasting receiver counts the number of occurrences of switching of broadcasting receptions in a specified period of time by using another set of threshold values changed as a result of the increased hysteresis width, and reduces the hysteresis width between the another set of threshold values when the number of occurrences of switching counted is less than the specified number.
    • 一种IBOC广播接收机,其以同时广播格式在接收混合广播中使用两种不同的比特错误率作为阈值,并且基于两个阈值在数字广播接收和模拟广播接收之间进行切换。 IBOC广播接收机在指定的时间段内对数字广播接收和模拟广播接收之间的切换次数进行计数,并且当切换次数超过规定数量时,增加两个阈值之间的滞后宽度。 此外,IBOC广播接收机的计数器通过使用由于增加的滞后宽度而改变的另一组阈值来计算在指定时间段内的广播接收的切换发生次数,并且减小另一个之间的滞后宽度 当切换次数少于指定次数时,设定阈值。