Claims
- 1. An optical disc drive, comprising:
a tracking actuator; and instructions operable to determine when the tracking actuator is positioned off a formatted portion of optical media in the disc drive.
- 2. The system, as set forth in claim 1, further comprising:
instructions operable to monitor tracking control effort to determine when the tracking actuator is in the off-format condition.
- 3. The system, as set forth in claim 1, wherein the instructions operable to determine when the tracking actuator is positioned off a formatted portion of optical media in the disc drive are further operable to determine whether tracking good or tracking bad is detected within a predetermined time period.
- 4. The system, as set forth in claim 2, further comprising:
instructions operable to generate an absolute value of the tracking control effort.
- 5. The system, as set forth in claim 4, further comprising:
instructions operable to filter the absolute value of the tracking control effort.
- 6. The system, as set forth in claim 5, further comprising:
a low pass filter to filter the absolute value of the tracking control effort.
- 7. The system, as set forth in claim 6, further comprising:
instructions operable to determine whether the absolute, filtered value of the tracking control effort is within a predetermined threshold value.
- 8. The system, as set forth in claim 1, further comprising:
instructions operable to indicate an off-format condition when the tracking control effort is not within the predetermined threshold value.
- 9. A method for controlling an optical disc drive, wherein the optical disc drive includes a tracking actuator, the method comprising:
determining when the tracking actuator is positioned off a formatted portion of optical media in the disc drive.
- 10. The method, as set forth in claim 9, further comprising:
monitoring tracking control effort to determine when the tracking actuator is in the off-format condition.
- 11. The method, as set forth in claim 9, wherein determining when the tracking actuator is positioned off a formatted portion of optical media in the disc drive includes determining whether tracking good or tracking bad is detected within a predetermined time period.
- 12. The method, as set forth in claim 11, further comprising:
generating an absolute value of the tracking control effort.
- 13. The method, as set forth in claim 12, further comprising:
filtering the absolute value of the tracking control effort.
- 14. The method, as set forth in claim 13, further comprising:
low pass filtering the absolute value of the tracking control effort.
- 15. The method, as set forth in claim 14, further comprising:
determining whether the absolute, filtered value of the tracking control effort is within a predetermined threshold value.
- 16. The method, as set forth in claim 9, further comprising:
indicating an off-format condition when the tracking control effort is not within the predetermined threshold value.
- 17. A computer program product, comprising::
instructions for implementing the method of claim 9.
- 18. A data signal comprising:
instructions for implementing the method of claim 9.
- 19. An apparatus for controlling an optical disc drive, wherein the optical disc drive includes a tracking actuator, the apparatus comprising:
means for determining when the tracking actuator is positioned off a formatted portion of optical media in the disc drive.
- 20. The apparatus, as set forth in claim 19, further comprising:
means for monitoring tracking control effort to determine when the tracking actuator is in the off-format condition.
- 21. The apparatus, as set forth in claim 19, wherein the means for determining when the tracking actuator is positioned off a formatted portion of optical media in the disc drive includes means for determining whether tracking good or tracking bad is detected within a predetermined time period.
- 22. The apparatus, as set forth in claim 21, further comprising:
means for generating an absolute value of the tracking control effort.
- 23. The apparatus, as set forth in claim 22, further comprising:
means for filtering the absolute value of the tracking control effort.
- 24. The apparatus, as set forth in claim 23, further comprising:
means for low pass filtering the absolute value of the tracking control effort.
- 25. The apparatus, as set forth in claim 24, further comprising:
means for determining whether the absolute, filtered value of the tracking control effort is within a predetermined threshold value.
- 26. The apparatus, as set forth in claim 19, further comprising:
means for indicating an off-format condition when the tracking control effort is not within the predetermined threshold value.
- 27. The apparatus, as set forth in claim 19, wherein the optical media includes a pitted premastered area that cannot be overwritten and a grooved user-writeable area that can be overwritten.
CROSS-REFERENCE TO CO-FILED APPLICATIONS
[0001] The present disclosure was co-filed with the following sets of disclosures: the “Tracking and Focus Servo System” disclosures, the “Servo System Calibration” disclosures, the “Spin Motor Servo System” disclosures, and the “System Architecture” disclosures; each of which was filed on the same date and assigned to the same assignee as the present disclosure, and are incorporated by reference herein in their entirety. The Tracking and Focus Servo System disclosures include U.S. Disclosure Ser. Nos. {Attorney Docket Numbers M-11095 US, M-12077 US, M-12078 US, M-12079 US, M-12080 US, M-12081 US, M-12082 US, M-12083 US, M-12084 US, M-12085 US, M-12086 US, M-12087 US, M-12088 US, M-12089 US, M-12090 US, M-12091 US, M-12092 US, M-12093 US, M-12104 US, M-12105 US, M-12106 US, M-12107 US, M-12108 US, M-12111 US, M-12112 US, and M-12195 US.} The Servo System Calibration disclosures include U.S. Disclosure Ser. Nos. {Attorney Docket Numbers M-1 1097 US, M-12094 US, M-12095 US, M-12096 US, M-12097 US, M-12098 US, M-12099 US, M-12100 US, M-12101 US, M-12102 US, M-12103 US, M-12109 US, M-12110 US and M-12155 US.} The Spin Motor Servo System disclosures include U.S. Disclosure Ser. Nos. {Attorney Docket Numbers M-12117 US, M-12118 US, M-12119 US, M-11096 US, M-12121 US, M-12122 US, and M-12147 US.} The System Architecture disclosures include U.S. Disclosure Ser. Nos. {Attorney Docket Numbers M-1 1098 US, M-12120 US, M-12023 US, M-12024 US, M-12025 US, M-12026 US, M-12027 US, M-12028 US, M-12029 US, M-12030 US, M-12031 US, M-12032 US, and M-12177 US.}
[0002] The present disclosure was also co-filed with the following disclosures U.S. patent Disclosure Ser. Nos. ______ , and ______ {Attorney Docket Numbers M-9115, and M-12076 US, respectively}, each of which was filed on the same date and assigned to the same assignee as the present disclosure, and are incorporated by reference herein in their entirety.
Provisional Applications (1)
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Number |
Date |
Country |
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60264351 |
Jan 2001 |
US |