Patent ID: 7376190

Claim:
An asynchronous data transmitting apparatus, comprising: a first transmission line having a first delay; a second transmission line having a delay smaller than the first delay; a third transmission line having a delay larger than the first delay; a transmitter that includes a first transmitting unit that transmits a data signal through the first transmission line, in accordance with a first clock; a second transmitting unit that transmits a control signal through the second transmission line, in accordance with the first clock; and a third transmitting unit that transmits the control signal through the third transmission line, in accordance with the first clock; and a receiver that includes a clock generator that generates a second clock from the control signals transmitted through the second and third transmission lines, wherein a pulse of the second clock is provided in a period from a first pulse-edge of the control signal transmitted through the third transmission line to a second pulse-edge subsequent to the first pulse edge, the second pulse-edge being of the control signal transmitted through the second transmission line; and a data receiving unit that receives the data signal through the first transmission line, in accordance with the second clock.