DEVICE AND METHOD FOR IDENTIFYING BIT RATE USING FREQUENCY DIVIDER

摘要

PROBLEM TO BE SOLVED: To provide a digitalized bit-rate identification device not affected by temperature variations.

SOLUTION: The bit-rate identification device includes: a first frequency divider for primarily dividing an inputted electrical signal at a previously set ratio of 1:R1; a second frequency divider for secondarily dividing the primarily divided electrical signal at a previously set ratio of 1:R2; and a controller for calculating a frequency from the number of pulses of the secondarily divided electrical signal and then identifying a bit rate corresponding to the frequency. The bit-rate identification device is thus made up of digital circuit components and calculates the frequency independent of a waveform of the electrical signal inputted in the device, thereby not affected by the temperature variations.

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