Dynamic information storage or retrieval – Control of storage or retrieval operation by a control... – Mechanism control by the control signal
Patent
1995-09-13
1996-11-12
Hindi, Nabil Z.
Dynamic information storage or retrieval
Control of storage or retrieval operation by a control...
Mechanism control by the control signal
369116, G11B 700
Patent
active
055747078
ABSTRACT:
When the header portion of an optical disk is read, a recording pulse width for the optical disk is corrected. The recording pulse width is determined by the delay time of a voltage control type delay element, and the recording pulse width is corrected by controlling the delay element. An internal oscillator having an oscillation frequency is determined by the delay time of the delay element, a comparison circuit for comparing the phase of a pulse output signal from the internal oscillator with the phase of an external reference pulse signal, and an integrator for integrating a phase difference obtained from the comparison circuit are arranged, and an output voltage from the integrator controls the delay time of the voltage control type delay element. Therefore, the delay time of the delay element is kept at a high accuracy in accordance with the external reference pulse signal during reading of the header portion.
REFERENCES:
patent: 4894816 (1990-01-01), Sukeda et al.
patent: 5070492 (1991-12-01), Ogawa et al.
patent: 5239533 (1993-08-01), Yoshimaru et al.
patent: 5414689 (1995-05-01), Maeda et al.
patent: 5459709 (1995-10-01), Bailey
Hindi Nabil Z.
Kabushiki Kaisha Toshiba
LandOfFree
Pulse width control apparatus for optical disk does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pulse width control apparatus for optical disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pulse width control apparatus for optical disk will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-568689