Abstract: An article detection device includes: an image acquiring unit acquiring a surroundings image; a first information image preparing unit preparing a first information image by converting information on a load/unloading target portion of the article to an easily recognizable state based on the surroundings image; a first calculation unit calculating at least one of a position and a posture of the load/unloading target portion; a second information image preparing unit preparing a second information image by converting information on a pitch angle detection portion of the article to an easily recognizable state; and a second calculation unit configured extracting at least two edge candidates for the article extending in a specific direction and included in the second information image based on a calculation result from the first calculation unit and calculating a three-dimensional direction vector indicating a pitch angle of the article from the edge candidates.

Abstract: An optical disk drive includes a servo control unit 7 for causing an optical disk A to be driven; an optical pickup 2 for reading recorded data from the recording surface of the optical disk A after carrying out focus pulling-in of an object lens; a CPU 8 for controlling the servo control unit 7 and optical pickup 2 to perform readout operation of data recorded on the optical disk A; and a temperature detecting unit 9 for detecting temperature in the optical disk drive. The CPU 8 calculates the focus pull-in level in accordance with the temperature detected by the temperature detecting unit 9, and carries out the focus pulling-in of the optical pickup 2 using the focus pull-in level.

Abstract: An optical disk drive includes a servo control unit 7 for causing an optical disk A to be driven; an optical pickup 2 for reading recorded data from the recording surface of the optical disk A after carrying out focus pulling-in of an object lens; a CPU 8 for controlling the servo control unit 7 and optical pickup 2 to perform readout operation of data recorded on the optical disk A; and a temperature detecting unit 9 for detecting temperature in the optical disk drive. The CPU 8 calculates the focus pull-in level in accordance with the temperature detected by the temperature detecting unit 9, and carries out the focus pulling-in of the optical pickup 2 using the focus pull-in level.