§
PatentCue
Patent Intelligence
Join Waitlist Sign In
← Back to Patent Explorer
EP0442566A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Information recording device

Assignee: Koninklijke Philips NV
•
Filing: 1991-02-08
•
Granted: —
•
Expires: 2011-02-08
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract An information recording device (Fig. 1) is disclosed, which device comprises write means (3, 8) for providing the record carrier (1) with information patterns (58, 59). The write means (3, 8) are adjustable. In determining the optimum adjustment a calibration procedure is carried out. For different settings of the write means (3, 8) information patterns (58, 59) are recorded. The optimum setting is determined on the basis of the recorded information patterns. The information recording device further comprises storage means for storing in a memory the determined optimum setting together with identification data which indicate for which combination of the recording device and a record carrier (1) the adjustment data has been determined. After a record carrier (1) has been loaded into the information recording device, it is detected whether adjustment data for the relevant combination of a record carrier (1) and an information recording device has been stored in the memory (1, 12). If adjustment data for said combination has been stored the write means (3, 8) are adjusted in conformity with this data and no new calibration procedure is performed, which saves a substantial amount of time.

Inventors

  • 👤 Johannes Leopoldus Bakx

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-24 17:27
CPC Classifications
G; G11; G11B; G11B11/00; G11B11/12; G11B7/00; G11B7/004; G11B7/0045

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 187 words
An information recording device comprising write means for providing the record carrier with information patterns, means for determining record carrier dependent adjustment data, adjustment means for adjusting the write means in conformity with the determined adjustment data, the means for determining the adjustment data being adapted to record information patterns for different settings of the write means and to determine, on the basis of the recorded information pattern, the adjustment data in accordance with a predetermined criterion, characterized in that the information recording device further comprises storage means for storing in a memory the determined adjustment data together with identification data indicative of the combination of the recording device and the record carrier for which the adjustment data has been determined, and detection means for detecting, after insertion of a record carrier into the information recording device, whether adjustment data for the relevant combination of a record carrier and information recording device has been stored in the memory, the adjustment means being adapted to adjust the write means in conformity with the adjustment data in the case that adjustment data for the said combination has been stored.
Claim 2
Dependent Claim 97 words
An information recording device as claimed in Claim 1, characterized in that the storage means are adapted to store in a memory of the information recording device the determined adjustment data together with the record carrier identification code indicative of the record carrier for which the data has been determined, the recording device comprising read means for reading a record carrier identification code which may be present on the record carrier, the detection means being adapted to determine whether adjustment data for the record carrier identification thus read has been stored in the memory of the device.
Claim 3
Dependent Claim 26 words
An information recording device as claimed in Claim 1, characterized in that the device comprises means for providing the record carrier with a record carrier identification.
Claim 4
Dependent Claim 26 words
An information recording device as claimed in Claim 3, characterized in that the recording device comprises a random-code generator for generating the record carrier identification code.
Claim 5
Dependent Claim 62 words
An information recording device as claimed in any one of the preceding Claims, characterized in that the write means comprise means for scanning the record carrier with a constant linear velocity by means of a write head, which write head, for the purpose of recording the information patterns, comprises means for realizing a detectable change in the record carrier area being scanned.

References Cited (Backward Citations)

EP0126682A1 Cited
EP0265849A2 Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag