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Recording device and method

A recording device and recording method technology, applied in data recording, optical recording head, recording information storage, etc., can solve the problem that the record carrier in the OPC area cannot be written, etc.

Inactive Publication Date: 2007-06-20
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Choosing a small OPC area will increase the probability that the OPC area is too small and the record carrier cannot be written because there is no space available to execute the OPC program

Method used

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  • Recording device and method

Examples

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Embodiment Construction

[0016] Figure 1 schematically shows an embodiment of a recording device 1 according to the invention comprising: a recording unit 2 for recording user data on an optical record carrier 4, such as a recordable or rewritable CD , a DVD or BD disc; and an OPC device 3 for performing optimal power calibration. The OPC device 3 comprises: an OPC recording unit 31, with which OPC test data is recorded on the record carrier 4; L is then the write power used by the recording unit 2 to record user data. Methods of performing optimal power calibration are generally known in the art and will not be described in detail here. For example, EP 1128373 A2 and US 6052347 describe optimal power calibration methods in which OPC test data are written in an OPC area specially allocated for this purpose. Note that although the recording unit 2 for recording user data and the OPC recording unit 31 are shown as separate blocks in FIG. 1, they may also have some common hardware, such as a laser sour...

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Abstract

The present invention relates to a recording device (1) and a corresponding recording method for recording user data in a user area (UA) on a recordable or rewritable optical record carrier (4) comprising OPC means (3) for performing optical power calibration by writing OPC test data on a record carrier (4) before user data are recorded thereon. To avoid the problem that no more user data can be recorded on the record carrier since an OPC area (40) particularly reserved for writing said OPC test data is full, and to enable the provision of a smaller OPC area (40), it is proposed according to the present invention that the OPC test data are written in said user area (41, 42) if the OPC area (40) reserved for writing said OPC test data is not usable or not provided on the record carrier (4).

Description

technical field [0001] The invention relates to a recording device and a corresponding recording method for recording user data in a user area on a recordable or rewritable optical record carrier, Optimal Power Calibration (OPC) is performed by writing OPC test data on the record carrier. The invention also relates to a record carrier and a computer program for implementing said recording method on a computer. Background technique [0002] Only a limited area is available on currently recordable and rewritable optical record carriers for performing optical power calibration (OPC) procedures. Such an Optical Power Calibration (OPC) procedure must be done to determine the write power that gives the best recorded data quality. A new calibration is always performed each time a record carrier is loaded into the drive. For rewritable record carriers, the limited space of the OPC area (this is the area reserved for writing OPC test data) is usually not a serious problem, because...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/007G11B7/125
CPCG11B7/1267G11B7/00736
Inventor M·W·布卢姆B·范罗姆帕伊
Owner KONINKLIJKE PHILIPS ELECTRONICS NV