Arent Fox Kintner Plotkin & Kahn, PLLC
Disc reproducing apparatus for determining a track jump
 A disc reproducing apparatus is provided which is adapted to scan information tracks to read information recorded on an information recording medium. This disc reproducing apparatus comprises: determining means capable of determining an actually happened track jump, said determining being effected when a difference between a present reproducing positional information and a reference reproducing positional information is larger than a predetermined value; detecting means for detecting a present track position which is just being reproduced at a present time; and setting means for setting said predetermined value corresponding to the present track position, in accordance with a result of the detecting means. 
Pioneer Corporation
G G G G G G G G G G G
G11B G11B G11B G11B G11B G11B G11B G11B G11B G11B G11B
additional inventional inventional additional inventional additional additional additional inventional inventional inventional
Takuya Masakazu Kiyoshi Hiroki Yoshimichi Hideaki Hiroyuki Hidetsugu Teruo Kazunori Yasutaka
Abe Takahashi Furukawa Goto Nishio Watarihana Kobayashi Kubota Takahashi Matsuo Suzuki