Patent ID: 7515671

Claim:
A method for correcting jitter of data transmitted from a transmitter to a receiver having a data buffer therein, the transmitter and the receiver operating with independent clock frequencies, the method comprising: receiving the data from a transmitter; storing the data in the data buffer; changing the receiver clock frequency used for reading data in the data buffer so that an amount of data in the data buffer is maintained within a predetermined range; wherein the receiver clock frequency is increased when the data amount is greater than an upper limit and decreased when the data amount is less than a lower limit; wherein the receiver clock frequency switches to an original value when the data amount falls below an upper limit or when the data amount exceeds the lower limit; wherein the receiver clock frequency increase or decrease is directly proportional to a difference between the data amount and the upper and lower limits, respectively, and wherein a hysteresis characteristic is applied to the change of the receiver clock frequency by setting a second upper limit and a second lower limit.