公开(公告)号：EP1487122A1

公开(公告)日：2004-12-15

申请号：EP03425382.3

申请日：2003-06-12

Applicant: STMicroelectronics S.r.l.

Inventor： Adducci, Francesco ,  Boarin, Gianluigi ,  Stefani, Fabrizio ,  Sala, Michele ,  Salidu, Fabrizio

IPC: H04B1/28 ,  H04L27/38

CPC classification number: H04B1/0007 ,  H03D5/00 ,  H04B1/001 ,  H04B1/0039 ,  H04B1/28

Abstract: A digital radio receiver achieves an outstandingly performance in terms of high signal/noise ratio by first converting a received radio frequency signal to a signal at an intermediate frequency by a fully analog tuning stage, thus avoiding to introduce any digital conversion noise before down-converting at intermediate frequency the radio signal.
The resulting digital signal is down-converted for generating in-phase and quadrature components that are filtered and eventually equalized by a programmable digital signal processor for compensating variations of the broadcast channel that may negatively affect the performance, especially in car radio applications.

Abstract translation: 数字无线电接收机通过首先通过完全模拟调谐级将接收到的射频信号转换成中频的信号，从而在高信噪比方面实现出色的性能，从而避免在下变频之前引入任何数字转换噪声 在中频无线电信号。 所产生的数字信号被下变频以产生被可编程数字信号处理器滤波并最终均衡的同相和正交分量，用于补偿可能不利地影响性能的广播频道的变化，特别是在汽车无线电 应用。

公开(公告)号：EP1394972B1

公开(公告)日：2006-03-01

申请号：EP02425547.3

申请日：2002-09-02

Applicant: STMicroelectronics S.r.l.

Inventor： Boarin, Gianluigi ,  Adduci, Francesco ,  Oddicini, Mattia ,  Crudo, Salvatore Matteo

IPC: H04B15/02 ,  H04B1/40 ,  H03K7/08

CPC classification number: H03K7/08 ,  H04B1/40 ,  H04B15/02 ,  H04B2215/064 ,  H04B2215/067

公开(公告)号：EP1394972A1

公开(公告)日：2004-03-03

申请号：EP02425547.3

申请日：2002-09-02

Applicant: STMicroelectronics S.r.l.

Inventor： Boarin, Gianluigi ,  Adduci, Francesco ,  Oddicini, Mattia ,  Crudo, Salvatore Matteo

IPC: H04B15/02 ,  H04B1/40 ,  H03K7/08

CPC classification number: H03K7/08 ,  H04B1/40 ,  H04B15/02 ,  H04B2215/064 ,  H04B2215/067

Abstract: The present invention relates to a high speed interface for radio systems, in particular to a synchronous serial digital interface for car radio.
In an its embodiment the synchronous serial digital interface for at least dual radio receiver systems comprises a master device and a slave device; said dual radio receiver systems having an intermediate frequency; said master device and said slave device exchange data in bi-directional way on at least one communication channel; said master device and said slave device have a unique bit clock; said master device supply to said slave device a synchronisation signal; said synchronisation signal have frequency spectrum with an amplitude at said intermediate frequency lower than at the other frequencies.

Abstract translation: 无线电系统的高速接口技术领域本发明涉及用于无线电系统的高速接口，特别涉及用于汽车无线电的同步串行数字接口。 在其实施例中，用于至少双无线电接收机系统的同步串行数字接口包括主设备和从设备; 所述双无线电接收机系统具有中频; 所述主设备和所述从设备在至少一个通信信道上以双向方式交换数据; 所述主设备和所述从设备具有唯一的位时钟; 所述主设备向所述从设备提供同步信号; 所述同步信号具有在所述中频处的振幅低于其它频率的频谱。