Method for backing up and restoring disc management information

Patent metadata

Field	Value
Publication number	US-11068358-B2
Application number	US-201916435647-A
Country	US
Kind code	B2
Filing date	Jun 10, 2019
Priority date	Apr 23, 2019
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

A method for backing up and restoring a disc management information is disclosed. Firstly, a specified optical disc is loaded into an optical disc drive. After a servo calibration process is performed, the latest update of the disc management information is read from a specified optical disc. If the latest update of the disc management information is read successfully, the optical disc drive enters a normal working state. If the latest update of the disc management information is not read successfully, the latest update of the disc management information is acquired through a processing circuit. Consequently, the optical disc drive enters the normal working state. While the normal working state of the optical disc drive is terminated, the latest update of the disc management information is transmitted to the processing circuit and recorded into the storage device.

First claim

What is claimed is:

1. A method for backing up and restoring a disc management information, the method being executed in a disc archive, the disc archive comprising a processing circuit and a storage device, the processing circuit being coupled with an optical disc drive, the method comprising steps of:
loading a specified optical disc into the optical disc drive;
reading the latest update of the disc management information of the specified optical disc after the optical disc drive performs a servo calibration process;
if the latest update of the disc management information is read successfully, the optical disc drive entering a normal working state;
if the latest update of the disc management information is not read successfully, acquiring the latest update of the disc management information of the specified optical disc through the processing circuit, so that the optical disc drive enters the normal working state; and
while the normal working state of the optical disc drive is terminated, transmitting the latest update of the disc management information to the processing circuit, recording the latest update of the disc management information into the storage device, and ejecting the optical disc.

2. The method as claimed in claim 1 , wherein the specified optical disc is removed from a specified disc carrier and loaded into the optical disc drive, wherein after the specified optical disc is ejected from the optical disc drive, the specified optical disc is placed in the specified disc carrier.

3. The method as claimed in claim 2 , wherein the specified disc carrier has a specified index number, wherein if the latest update of the disc management information is not read successfully, the processing circuit acquires the latest update of the disc management information of the specified optical disc from the storage device according to the specified index number of the specified disc carrier and a mapping table and transmits the latest update of the disc management information to the optical disc drive.

4. The method as claimed in claim 3 , wherein while the normal working state of the optical disc drive is terminated, the latest update of the disc management information is stored into the storage device by the processing circuit according to the specified index number of the disc carrier and the mapping table.

5. The method as claimed in claim 1 , wherein the specified optical disc has an identification code, wherein if the latest update of the disc management information is not read successfully, the processing circuit acquires the latest update of the disc management information of the specified optical disc from the storage device according to the identification code of the specified optical disc and a mapping table and transmits the latest update of the disc management information to the optical disc drive.

6. The method as claimed in claim 5 , wherein while the normal working state of the optical disc drive is terminated, the latest update of the disc management information is stored into the storage device by the processing circuit according to the identification code of the specified optical disc and the mapping table.

7. The method as claimed in claim 1 , wherein the latest update of the disc management information is recorded in a temporary disc management area of the specified optical disc.

8. A method for backing up and restoring a disc management information, the method being executed in a disc archive, the disc archive comprising a processing circuit and a storage device, the processing circuit being coupled with an optical disc drive, the method comprising steps of:
loading a specified optical disc into the optical disc drive;
acquiring the latest update of the disc management information of the specified optical disc of the storage device through the processing circuit after the optical disc drive performs a servo calibration process, so that the optical disc drive enters the normal working state; and
while the normal working state of the optical disc drive is terminated, transmitting the latest update of the disc management information to the processing circuit, recording the latest update of the disc management information into the storage device, and ejecting the optical disc.

9. The method as claimed in claim 8 , wherein the specified optical disc is removed from a specified disc carrier and loaded into the optical disc drive, wherein after the specified optical disc is ejected from the optical disc drive, the specified optical disc is placed in the specified disc carrier.

10. The method as claimed in claim 9 , wherein the specified disc carrier has a specified index number, wherein if the latest update of the disc management information is not read successfully, the processing circuit acquires the latest update of the disc management information of the specified optical disc from the storage device according to the specified index number of the specified disc carrier and a mapping table and transmits the latest update of the disc management information to the optical disc drive.

11. The method as claimed in claim 10 , wherein while the normal working state of the optical disc drive is terminated, the latest update of the disc management information is stored into the storage device by the processing circuit according to the specified index number of the disc carrier and the mapping table.

12. The method as claimed in claim 8 , wherein the specified optical disc has an identification code, wherein if the latest update of the disc management information is not read successfully, the processing circuit acquires the latest update of the disc management information of the specified optical disc from the storage device according to the identification code of the specified optical disc and a mapping table and transmits the latest update of the disc management information to the optical disc drive.

13. The method as claimed in claim 12 , wherein while the normal working state of the optical disc drive is terminated, the latest update of the disc management information is stored into the storage device by the processing circuit according to the identification code of the specified optical disc and the mapping table.

Assignees

• Lite On Electronics Guangzhou
• Lite On Technology Corp

Inventors

• Lin Che-Ching

Classifications

• G11B7/09 Primary

  with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following · CPC title

• G06F11/1469 Primary

  Backup restoration techniques · CPC title

• G11B7/00736

  Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information (sector headers or adresses in prepits G11B7/00745; address data in track wobble G11B7/24082) · CPC title

• G06F11/1446 Primary

  Point-in-time backing up or restoration of persistent data · CPC title

• G11B17/0401

  Details · CPC title