Image signal reproducing apparatus having memory function
AssigneeCanon Kabushiki Kaisha
InventorTokihiko Ogura
Life of this patent
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Abstract
Disclosed is an image signal reproducing apparatus for reproducing an image signal from a recording medium on which is recorded the image signal with a frequency-multiplexed pilot signal When the image signal reproduced from the recording medium is stored, the operation of storing the reproduced image signal is conducted by using a clock signal which defines a timing in which the reproduced image signal is stored. The clock signal is a signal whose phase is synchronized with that of the pilot signal reproduced from the recording medium and then corrected. In consequence, the reproduced image signal can be stored with a high degree of accuracy without being affected by the phase difference between the reproduced image signal and the reproduced pilot signal.
Claims8
An image signal reproducing apparatus for reproducing an image signal from a disk-shaped recording medium on which the image signal with which a pilot signal is frequency-multiplexed is recorded, comprising:
- (a) reproducing position designating means for designating any desired reproducing position on said disk-shaped recording medium;
- (b) reproduction means for reproducing the image signal with which the pilot signal is frequency-multiplexed, recorded at the reproducing position designated by said reproducing position designating means on said disk-shaped recording medium and for outputting the reproduced image signal and the reproduced pilot signal;
- (C) memory means for storing the reproduced image signal output from said reproduction means;
- (D) clock signal generating means for generating a clock signal synchronized in phase with the reproduced pilot signal output from said reproduction means;
- and
- (E) clock signal correction means for correcting the phase of said clock signal generated by said clock signal generating means in accordance with the reproducing position on said disk-shaped recording medium designated by said reproducing position designating means.
An image signal reproducing apparatus for reproducing an image signal from a recording medium on which the image signal with which a pilot signal is frequency-multiplexed is recorded, comprising:
- (A) memory means for storing the image signal reproduced from the recording medium;
- (B) clock signal generating means for generating a clock signal which is synchronized in phase with the reproduced pilot signal reproduced from the recording medium;
- (C) synchronizing signal separation means for separating a synchronizing signal from the reproduced image signal reproduced from the recording medium and for outputting the separated synchronizing signal;
- (D) synchronizing signal correcting means for correcting the synchronizing signal output from said synchronizing signal separation means in accordance with the clock signal generated by said clock signal generating means and for outputting the corrected synchronizing signal;
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- (E) control means for controlling an operation of storing the reproduced image signal by said memory means in accordance with the clock signal generated by said clock signal generating means and the corrected synchronizing signal output from said synchronizing signal correcting means.
Dependencies are inferred from the claim text.