Patent ID: 6504635
Filing Date: 2003-01-07
Classification: H04L

Abstract:
An IrDA modulation/demodulation integrated circuit device for modulating/demodulating a signal by an IrDA-complying method that meets SIR standards, comprising:a transmission-side CRC block for performing calculation on data consisting of an address field, a control field, and an information field to calculate a frame check sequence and then appending a frame check sequence field to the data; a transmission-side data transparency control block for performing data transparency control for transmission on data output from the transmission-side CRC block; a transmission-side flag block for adding a BOF flag and an EOF flag at a head and a tail, respectively, of data output from the transmission-side data transparency control block; a reception-side flag block for removing the BOF flag and the EOF flag from a demodulated signal; a reception-side data transparency control block for performing data transparency control for reception on a basis of data output from the reception-side flag block; and a reception-side CRC block for checking for a transfer error by checking a value in the frame check sequence field included in data output from the reception-side data transparency control block.