发明授权
US07835477B2 Noise canceller and AM receiving apparatus using the same 有权
噪声消除器和使用其的AM接收装置

  • 专利标题: Noise canceller and AM receiving apparatus using the same
  • 专利标题(中): 噪声消除器和使用其的AM接收装置
  • 申请号: US11734760
    申请日: 2007-04-12
  • 公开(公告)号: US07835477B2
    公开(公告)日: 2010-11-16
  • 发明人: Jun Suzuki
  • 申请人: Jun Suzuki
  • 申请人地址: JP Osaka
  • 专利权人: Sanyo Electric Co., Ltd.
  • 当前专利权人: Sanyo Electric Co., Ltd.
  • 当前专利权人地址: JP Osaka
  • 代理机构: SoCal IP Law Group LLP
  • 代理商 Steven C. Sereboff; John E. Gunther
  • 优先权: JP2006-110878 20060413
  • 主分类号: H03D3/22
  • IPC分类号: H03D3/22 H04B1/10
Noise canceller and AM receiving apparatus using the same
摘要:
A noise canceller that a receiving signal received by a receiving antenna is input to, the noise canceller removing a pulse noise superimposed on the receiving signal to output the signal, the noise canceller comprising: a pulse noise detecting unit that detects the pulse noise superimposed on the receiving signal; a reception level detecting unit that detects the level of the receiving signal; a level hold unit that is triggered by the detection of the pulse noise with the pulse noise detecting unit to hold the level of the receiving signal in a process on the preceding stage of the output; and a level hold period setting unit that sets the level hold period when the level is held in the level hold unit in accordance with the level of the receiving signal detected by the reception level detecting unit.
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