公开(公告)号：US5524288A

公开(公告)日：1996-06-04

申请号：US157618

申请日：1993-11-24

Applicant: Alejandro J. Monge Navarro ,  Matti T. Koskinen ,  Rauno T. Aalto ,  Tapio I. Gustafsson ,  Henrik J. Sunell ,  Jouko K. Heinonen

Inventor： Alejandro J. Monge Navarro ,  Matti T. Koskinen ,  Rauno T. Aalto ,  Tapio I. Gustafsson ,  Henrik J. Sunell ,  Jouko K. Heinonen

IPC: H03J1/00 ,  H03J3/32 ,  H03J5/02 ,  H04H40/18 ,  H04B1/18

CPC classification number: H03J5/0281 ,  H03J1/0033 ,  H03J3/32 ,  H04H2201/13 ,  H04H40/18

Abstract: The present invention relates to a method of tuning a radio receiver to a desired frequency. The frequency of each tuning circuit in the radio receiver is controlled by controlling the capacitance diodes of the tuning circuits. The control is accomplished with an individual DA converter arranged for each tuning circuit with which the frequency of the tuning circuit associated therewith can be controlled independently of the other tuning circuits. The optimal control values of each DA converter is defined at least in two points of the frequency range of the radio receiver. These control values are stored in a memory provided in the radio receiver. On the basis of the stored control values the control values for the entire frequency range are calculated for each control means.

Abstract translation: 本发明涉及一种将无线电接收机调谐到所需频率的方法。 通过控制调谐电路的电容二极管来控制无线电接收机中每个调谐电路的频率。 该控制是通过为每个调谐电路设置的单独的DA转换器实现的，与其相关联的调谐电路的频率可以独立于其它调谐电路被控制。 每个DA转换器的最佳控制值至少在无线电接收机的频率范围的两点中定义。 这些控制值存储在无线电接收机中提供的存储器中。 基于存储的控制值，针对每个控制装置计算整个频率范围的控制值。