Patent ID: 6263449
Filing Date: 2001-07-17
Classification: H04B

Abstract:
A data processor having radio communication function, comprising:(a) a clock generator for selectively generating clock signals having different frequencies;(b) a signal quality analyzer for analyzing quality of a received signal by comparing quality of a received signal to a predetermined threshold level, wherein said signal quality analyzer judges that quality of a received signal degrades when an electric field intensity of said received signal is lower than said threshold level successively M times where M is a predetermined positive integer, and judges that quality of a received signal does not degrade when an electric field intensity of said received signal is higher than said threshold level successively M times;(c) a frequency controller for causing said clock signals to have a first frequency when said quality of a received signal is judged not to degrade, and causing said clock signals to have a second frequency when said quality of a received signal is judged to degrade; and(d) a prohibitor for prohibiting a frequency of said clock signals from being switched.