Patent ID: 7009923

Claim:
A method of recording information in which each recording mark is formed in a recording medium by irradiating a pulse chain of an energy beam including a first pulse, a middle pulse chain, a last pulse and a negative pulse following the last pulse, comprising the steps: adjusting average power of the first pulse to a designated power level of the first pulse recorded in a control data zone; adjusting average power of the middle pulse chain to an arithmetic mean of a designated upper power level and a designated lower power level recorded in the control data zone; adjusting average power of the last pulse to a designated power level of the last pulse recorded in the control data zone; adjusting average power of the negative pulse to a designated power level of the negative pulse recorded in the control data zone; and controlling an edge of the first pulse based on a look-up table which records values determined by combinations of a length of a mark and a length of a space leading the mark; wherein the average power is determined as the energy contained in a respective pulse divided by the pulse holding time.