Patent ID: 7599460

Claim:
A transmitting apparatus, comprising: a first device including: a first clock source for generating a first clock, and a second clock source for generating a second clock; and a second device including: a first timing clock generator for pulling the first clock into the second clock, the first timing clock generator including; a first variable delay element for variably delaying the first clock; a second variable delay element for variably delaying the second clock; a first phase detection circuit for comparing the first clock and the second clock; and a first phase controller controlling a phase control amount of the first variable delay element and the second variable delay element by the use of a result of the first phase detection circuit; and a second timing clock generator for pulling the second clock into the first clock, the second timing clock generator including: a third variable delay element for variably delaying the first clock; a fourth variable delay element for variably delaying the second clock; a second phase detection circuit for comparing the first clock and the second clock; and a second phase controller controlling a phase control amount of the third variable delay element and the fourth variable delay element by the use of a result of the second phase detection circuit.