G - Physics – 11 – C
Patent
G - Physics
11
C
352/16
G11C 7/00 (2006.01) H04N 5/76 (2006.01)
Patent
CA 1067206
ABSTRACT OF THE DISCLOSURE The present invention relates to instantaneous monitoring of information recorded on a videodisc. In the prior art, it has not been possible to accurately determine the quality of a recorded videodisc until after completing the recording process. The present invention overcomes this problem by providing an im- proved apparatus and method for instantaneously checking information recorded on a videodisc. In accordance with the invention, the instantaneous monitoring system includes a comparator for comparing a video output information signal developed from reading a videodisc with a video input signal used to write information on the videodisc. Further included is an F.M. modulator for converting the voltage varying with time signal to a frequency modulated signal. A writer is provided for storing the frequency modulated signal upon a light responsive videodisc in the form of alternate regions of high and low directional reflectivity normal to the surface of the disc. A sensor, responsive to the reflected light, is used for recreating the frequency modulated signal, and a modulator responsive to the output of the sensor produces a voltage varying with time output video information signal. The comparator output is used to verify the quality of the information being stored on the videodisc.
313004
LandOfFree
Apparatus and method for checking information recorded on a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for checking information recorded on a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for checking information recorded on a... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1037576