| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and device for achieving a reliable communication link by deciding the quality of a digital signal, preferably of an infrared signal. SOLUTION: In this device and method for deciding the quality of a digital signal s, n(n>=1) pieces of incoming digital signals S are sampled based on defined pulse width by using a clock cycle CLK. Then, an edge detector 20 detects the edge position of the pulse of the sampled digital signal, and a counter 30 counts clock cycles between at least the first edge and second edge detected by the edge detector. Then, a deviation detector 40 compares a counted clock cycle EEC with a stored reference value EEC0, and provides a deviation value RJ as the index of the instantaneous quality of the digital signal S. This deviation value RJ is supplied to a rework unit, and the rework unit supplies a value J as the index of the quality of the digital signal. |
