| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio receiver which is used for a radio remote controller for locking and unlocking vehicle doors and is capable of solving problems that the radio receiver requires an oscillation circuit which generates an operation frequency for a control means and another oscillation circuit which generates a reference frequency to be inputted into a mixer of a receiving circuit, and becomes expensive. <P>SOLUTION: The oscillation circuit is directly connected to the control means, and connected to a multiplier through a limiting circuit and an amplifying circuit. Some of oscillation signals outputted from the oscillation circuit are branched by the limiting circuit, amplified by the amplifying circuit and then inputted into the multiplier. Thereby, the oscillation circuit which determines an operation frequency of the control means has functions of the oscillation circuit of the receiving circuit, so that an inexpensive radio receiver is achieved. <P>COPYRIGHT: (C)2010,JPO&INPIT |
