Patent ID: 7529163

Claim:
An information recording apparatus comprising: a writing device configured to i) write, with respect to a disc-shaped information recording medium, in which at least first and second recording layers, making a pair, are laminated, and in which a buffer area, to prevent a recording or reproduction position for the first and second recording layers from being off to an unrecorded area, is disposed in a position adjacent to a recording area in the first and second recording layers, a first portion out of information to be recorded into the first recording layer along a first track path directing from a first side to a second side out of an inner circumferential side and an outer circumferential side of the information recording medium, and ii) write a second portion out of the information to be recorded into the second recording layer, with a recording direction reversed, along a second track path directing from the second side to the first side; and a controlling device configured to control said writing device i) to write the first portion into the first recording layer along the first track path, and then write a predetermined amount of first buffer data into the first recording layer along the first track path in one portion of the buffer area of the first recording layer, and also to perform layer jump from the first recording layer to the second recording layer, and then ii) to write a predetermined amount of second buffer data into the second recording layer along the second track path in one portion of the buffer area of the second recording layer, and then write the second portion into the second recording layer along the second track path.