To provide an inexpensive clock correcting circuit to be applied to a specified low power radio system, and also to provide a mobile body terminal, a base station device, and a clock correcting method.

As shown in Fig.4, the clock correcting circuit includes: a frequency data storage circuit for storing frequency data corresponding to a channel and outputting the frequency data corresponding to the channel to be designated by a channel selection signal; a frequency correcting circuit for calculating a frequency setting value by performing calculation with the use of a frequency correction value determined in response to circumferential temperature and the frequency data; a voltage control oscillator 421 for generating a first frequency, based on a clock signal; and a PLL 422 for generating a desired second frequency by performing calculation with the use of the first frequency and the frequency setting value.

COPYRIGHT: (C)2007,JPO&INPIT