公开(公告)号：WO2004086657A3

公开(公告)日：2006-01-05

申请号：PCT/JP2004004183

申请日：2004-03-25

Applicant: MATSUSHITA ELECTRIC IND CO LTD ,  KATO HISAYA ,  OZEKI HIROAKI

Inventor： KATO HISAYA ,  OZEKI HIROAKI

IPC: H04B1/00 ,  H04B1/16 ,  H04B1/38 ,  H04H40/18 ,  H04H60/51 ,  H04Q7/38 ,  H04H1/00

CPC classification number: H04H40/18 ,  H03J2200/12 ,  H04H20/42 ,  H04H60/51 ,  H04N21/41407 ,  H04N21/4263

Abstract: A first switching circuit (21) outputs a first radio signal representing a plurality of time-division multiplexed programs and a second radio signal other than the first radio signal, one at a time according to a switching signal. A voltage control oscillator (27) outputs a local signal at a frequency suitable for whichever signal outputted. Using the local signal generated, a frequency converter (24) frequency converts the first and second radio signals to first and second baseband signals, respectively. Via a second switching circuit (31), a first baseband unit (40) and a second baseband unit (50) are supplied with the first and second baseband signals, respectively, and demodulate them to first and second data signals. A switching unit (60) supplies the switching signal indicating periods during which the first radio signal represents a user-selected program, to a tuner unit (20) where the first and second radio signals are processed by time-sharing.

Abstract translation: 第一切换电路（21）根据切换信号一次输出表示多个时分多路复用程序的第一无线信号和第一无线信号以外的第二无线信号。 电压控制振荡器（27）输出适合于输出哪个信号的频率的本地信号。 使用所生成的本地信号，频率转换器（24）分别将第一和第二无线电信号频率转换为第一和第二基带信号。 通过第二切换电路（31），第一基带单元（40）和第二基带单元（50）分别被提供有第一和第二基带信号，并将其解调为第一和第二数据信号。 切换单元（60）将指示第一无线电信号表示用户选择的节目的周期的切换信号提供给通过分时处理第一和第二无线电信号的调谐器单元（20）。