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Invention Grant
US06731348B2 Television tuner having simple layout and capable of receiving FM broadcast signals without interference 失效
电视调谐器具有简单的布局，能够无干扰地接收FM广播信号

  • Patent Title: Television tuner having simple layout and capable of receiving FM broadcast signals without interference
  • Patent Title (中): 电视调谐器具有简单的布局，能够无干扰地接收FM广播信号
  • Application No.: US09814343
    Application Date: 2001-03-21
  • Publication No.: US06731348B2
    Publication Date: 2004-05-04
  • Inventor: Shigeru Osada , Masaki Yamamoto , Toshiro Furuta
  • Applicant: Shigeru Osada , Masaki Yamamoto , Toshiro Furuta
  • Priority: JP2000-087098 20000323; JP2000-142253 20000509
  • Main IPC: H04N546
  • IPC: H04N546
Television tuner having simple layout and capable of receiving FM broadcast signals without interference
Abstract:
A television tuner includes a mixer circuit for receiving a television signal or an FM signal, and a local oscillator circuit for generating an oscillation signal received by the mixer circuit. When the television signal is received, a television intermediate-frequency signal is generated by the mixer circuit. When the FM broadcast signal is received, an FM intermediate-frequency signal having a frequency converted to about 10.7 MHz is generated by the mixer circuit.
Abstract(Chinese):

电视调谐器包括用于接收电视信号或FM信号的混频器电路，以及用于产生由混频器电路接收的振荡信号的本地振荡器电路。 当接收到电视信号时，由混频器电路产生电视中频信号。 当接收到FM广播信号时，由混频器电路产生频率转换为约10.7MHz的FM中频信号。

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