Recording medium on which navigation information is recorded and information reproducing apparatus therefor
AssigneePioneer Electronic Corporation
InventorsKatsuyoshi Hayashi, Kenichiro Yano
Life of this patent
Estimating the term…
Abstract
A recording medium and an information reproducing apparatus capable of quickly reading navigation information are offered. The recording medium has a plurality of recording layers, on each of which navigation information is recorded. Navigation information having a same attribute is recorded in same one of the plurality of recording layers.
Claims17
An information reproducing apparatus for reproducing information from a recording medium having a plurality of recording layers respectively read at different focal points, wherein navigation information is recorded on each of the plurality of recording layers, and wherein navigation information having a same attribute is recorded in a same one of the plurality of recording layers, the apparatus comprising:
- means for emitting a light beam for reading the navigation information from the recording medium;
- focus control means for controlling a position of the light beam in a focus direction;
- tracking control means for controlling the position of the light beam in a tracking direction;
- and
- reproduction means for reproducing the navigation information on the basis of a reflected light beam from each of the recording layers of the recording medium.
An information reproducing apparatus for reproducing information from a recording medium having a plurality of recording layers respectively read at different focal points, wherein navigation information is recorded on each of the plurality of recording layers, and wherein navigation information having a same attribute is recorded in a same area of each of the plurality of recording layers, the apparatus comprising:
- means for emitting a light beam for reading the navigation information from the recording medium;
- focus control means for controlling a position of the light beam in a focus direction;
- tracking control means for controlling the position of the light beam in a tracking direction;
- and
- reproduction means for reproducing the navigation information on the basis of a reflected light beam from each of the recording layers of the recording medium.
A recording medium readable by a navigation system to provide navigation information for a map, comprising:
- a plurality of recording layers respectively read at different focal points, a plurality of navigation information is stored on each of the plurality of recording layers, wherein a plurality of navigation information for maps having a same attribute are recorded on a same one of the plurality of recording layers and is readable by the navigation system.
A recording medium readable by a navigation system to provide navigation information for a map, comprising:
- a plurality of recording layers respectively read at different focal points, a plurality of navigation information is stored on each of the plurality of recording layers for a plurality of maps;
- a plurality of areas on each of the recording layers, wherein each one of the plurality of navigation information for one of the plurality of maps is in a same area of at least two of the plurality of recording layers and is readable by the navigation system.
Dependencies are inferred from the claim text.