Loading patent…
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYasumori Hino, Norio Miyatake, Tadashi Nakamura
Estimating the term…
An optical disk includes at least one region along a radial direction, and a plurality of tracks provided in the at least one region. The at least one region contains address regions radially positioned on the plurality of tracks. In the address regions, data which is common between two adjacent tracks of the plurality of tracks is recorded at positions aligned along the same radial direction on the two adjacent tracks, and data which is not common between the two adjacent tracks is recorded at positions along different radial directions on the two adjacent tracks.
A method for producing an optical disk master, comprising the steps of:
A method for producing an optical disk, comprising the steps of:
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
On the same track as the main recording: used signal is digitally coded
Arrangement of the information on the record carrier, e.g. form of tracks , actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped;…:…
Arrangement of the information on the record carrier, e.g. form of tracks , actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped;…:…
With provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record…
Term ended 12 Aug 2018 (estimated)
1. Field of the Invention
The present invention relates to an optical disk from/onto which data is reproduced/recorded by utilizing laser light; an optical disk apparatus which reads out or records signals using an optical disk; and a method for producing an optical disk master.
2. Description of the Related Art
FIGS. 1A and 1B are views for illustrating the structures of an optical disk 100 and an address number region 105-1 thereof according to Example 1 of the present invention;
FIG. 2 is a view for illustrating the structure of an address number region 105-2 of an optical disk according to Example 2 of the present invention;
FIGS. 3A to 3C are views for illustrating structures of an optical disk 200, and address number regions 205 and 207 according to Example 3 of the present invention;
Hereinafter, the present invention will be described by way of illustrative, but non-limiting examples with reference to the accompanying drawings. The same components are denoted by the same reference numerals in the following examples.
FIG. 1A shows the structure of an optical disk 100 according to Example 1 of the present invention.
The optical disk 100 includes: a first zone 101 and a second zone 102, which are obtained by concentrically dividing the optical disk 100; sectors 103 obtained by dividing the first zone 101 into 12 sections along radial directions; sectors 104 which are obtained by dividing the second zone 102 into 16 sections along radial directions; address number regions 105-1 of the sectors 104 which are recorded by pits; and data recording regions 106 which record data of the sectors 104.