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US 6,549,489 B1Granted
Method for reading and writing an incompletely recordable optical disk
AssigneeKoninklijke Philips Electronics N.V.
InventorsGijsbert J. Van Der Enden, Antonius P. G. E. Janssen, Arnoldus J. Niessen, Cornelis Teunissen, Franz H. U. Frank
Life of this patent
Estimating the term…
Abstract
A record carrier includes write status information indicating whether at least one area of the record carrier has been written, initial area status information indicating the extent of an uninterrupted initial area contiguously written from the start of a track pattern area intended for writing information blocks, and/or conformance status information indicating whether the record carrier is written to fully comply with the requirements of a standard that specifies requirements of reading devices or only partially complies with the standard for reading devices.
Claims11
A writing device comprising:
- a write unit for writing marks representing information blocks in areas of a track pattern on a record carrier, using a beam of electromagnetic radiation;
- positioning means for positioning the write unit with respect to the record carrier depending on a track structure which indicates the position of the track pattern;
- and
- status means for generating status information, the status information indicating whether at least an initial area of the record carrier has been written, the status information indicating information blocks not contiguous with the initial area of the record carrier that should not be read by a device reading the record carrier and the status information indicating if duplicate information blocks contiguous with the initial area exist for information blocks not contiguous with the initial area, then the duplicate information blocks should be read by the device reading the record carrier.
1 more element
A rewritable record carrier, comprising:
- a track pattern for writing marks representing information blocks;
- a track structure which indicates the position of the track pattern;
- and
- means for representing status information, the status information indicating whether at least an initial area of the record carrier has been written, the status information indicating information blocks not contiguous with the initial area of the record carrier that should not be read by a device reading the record carrier and the status information indicating if duplicate information blocks contiguous with the initial area exist for information blocks not contiguous with the initial area, then the duplicate information blocks should be read by the device reading the record carrier.
1 more element
A method comprising the steps of:
- positioning a write unit on a track of a record carrier of the rewritable type;
- writing marks representing information blocks in areas of the track pattern using a write unit and a beam of electromagnetic radiation;
- and
- generating status information, the status information indicating whether at least an initial area of the record carrier has been written, the status information indicating information blocks not contiguous with the initial area of the record carrier that should not be read by a device reading the record carrier and the status information indicating if duplicate information blocks contiguous with the initial area exist for information blocks not contiguous with the initial area, then the duplicate information blocks should be read by the device reading the record carrier.
1 more element
A reading device comprising:
- read means for reading information blocks represented by optically readable marks in a track pattern on a record carrier;
- a read unit for reading the marks using a beam of electromagnetic radiation;
- and
- positioning means for positioning the read unit depending on the marks and depending on status information, the status information indicating information blocks not contiguous with the initial area of the record carrier that should not be read by a device reading the record carrier and the status information indicating if duplicate information blocks contiguous with the initial area exist for information blocks not contiguous with the initial area, then the duplicate information blocks should be read by the device reading the record carrier.
1 more element
An apparatus for providing signals for programming a programmable system comprising:
- write status means for generating status information, the status information indicating whether at least an initial area of a track of an optical record carrier has been written, the status information indicating information blocks not contiguous with the initial area of the record carrier that should not be read by a device reading the record carrier and the status information indicating if duplicate information blocks contiguous with the initial area exist for information blocks not contiguous with the initial area, then the duplicate information blocks should be read by the device reading the record carrier;
- and
- compliance status means for generating compliance status information which indicates whether the optical record carrier has been written to fully comply with requirements of a reading device.
A program storage device readable by machine, tangibly embodying a program of instructions executable by the machine to perform method steps for providing signals for programming a programmable system, the method steps comprising:
- positioning a write unit depending on a track structure which indicates a track pattern on an record carrier of the rewritable type;
- writing marks representing information blocks in areas of the track pattern via a write unit and a beam of electromagnetic radiation;
- and
- generating status information, the status information indicating whether at least an initial area of the record carrier has been written, the status information indicating information blocks not contiguous with the initial area of the record carrier that should not be read by a device reading the record carrier and the status information indicating if duplicate information blocks contiguous with the initial area exist for information blocks not contiguous with the initial area, then the duplicate information blocks should be read by the device reading the record carrier.
1 more element
Dependencies are inferred from the claim text.