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US 2003/0193881 A1Published application
Information recording method and apparatus
AssigneeHitachi, Ltd.
InventorsHarukazu Miyamoto, Hiroyuki Minemura, Yasushi Miyauchi
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AssigneeHitachi, Ltd.
InventorsHarukazu Miyamoto, Hiroyuki Minemura, Yasushi Miyauchi
Estimating the term…
A rewritable recording medium having a synchronizing signal portion recorded with a synchronizing signal information and a data portion recorded with data information after the synchronizing signal portion. Each time the synchronizing signal information is rerecorded, a length of the synchronizing signal portion changes and a start position of the synchronizing signal portion changes.
A rewritable recording medium, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
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Formatting, e.g. arrangement of data block or words on the record carriers: on discs
Recording, reproducing or erasing methods; Read, write or erase circuits therefor: recording
Recording, reproducing or erasing methods; Read, write or erase circuits therefor: overwriting
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;…:…
Term end not estimated
The present invention relates to a so-called mark-edge recording in which marks are recorded in certain areas of a recording medium so that their physical property is made different from the other areas to thereby have information associated with both ends of each of the marks.
The present invention is particularly suited to a rewritable high-density information recording method capable of recording information to be repeatedly rewritable. The present invention is also suited to a so-called phase-changing type information recording method in which the physical property of the information recorded areas is made different from the other areas by the phase change of the recorded substance that is caused by changing the temperature of the information recording medium.
A conventional rewritable information recording method is disclosed in, for example, JP-A-63-22962. This method is an optical disk recording method for recording information by modulating the intensity of light.
FIGS. 1A and 1B are a conceptional diagram and a pulse waveform diagram for explaining one embodiment of an information recording method of the present invention;
FIG. 2 is a plan view showing another embodiment of the information recording method of the present invention;
FIG. 3 is a plan view showing still another embodiment of the information recording method of the present invention;
Other objects, features and advantages of the present invention will become apparent from reading of the following description of embodiments of the invention in conjunction with the accompanying drawings. Like reference numerals and symbols indicate like elements, parts or circuits in the drawings.
Embodiments of the invention will now be described in detail with reference to the drawings.
(Embodiment 1)