Optical recording and reproducing apparatus for controlling a la

Details Optical recording and reproducing apparatus for controlling a la Optical recording and reproducing apparatus for controlling a la

1994-04-18

1996-04-30

Hindi, Nabil Z.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 54, G11B 700

Patent

active

055131662

ABSTRACT:
In an optical information recording method and apparatus for performing the pre-write testing of test data for an optical recording medium connected to a host computer, an instruction for pre-write testing of test data inclusive of two predetermined continuous signals is received independently from a write command from the host computer. The pre-write testing of the test data is performed by supplying different laser driving currents for plural ones of pre-write testing areas of the optical recording medium to an optical information recording head in accordance with the pre-write testing instruction. The respective pre-write testing data are reproduced to determine a difference in an average voltage level between the two continuous signals of each test data. The laser driving current supplied for the pre-write testing of the test data indicative of the smallest value of the difference is set as a laser driving current which is to be supplied to the optical information recording head when the recording of user data is to be performed. A time interval until the next pre-write testing of test data is set in accordance with the set laser driving current. With the above construction, the pre-write testing can be eliminated at every write command requested from the host computer.

REFERENCES:
patent: 5341360 (1994-08-01), Johann et al.

Affiliated with

Also associated with

Rating

Optical recording and reproducing apparatus for controlling a la does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical recording and reproducing apparatus for controlling a la, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical recording and reproducing apparatus for controlling a la will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-634488