Digital time base corrector for video signal reproduction

A digital time base corrector comprising:

• A/D converting means for converting a reproduced video signal read out and reproduced from a recording medium into a digital signal;
• memory control means for writing said digital signal into an image memory in accordance with a write clock signal and for reading out said digital signal from said image memory in accordance with a read clock signal of a predetermined period of time;
• D/A converting means for converting said read-out digital signal into an analog video signal,
• wherein said memory control means comprises
• clock forming means for forming a sync clock signal having a phase synchronized with a time base fluctuation included in said reproduced video signal in accordance with at least one of a horizontal sync signal and a color burst signal which are separated from said reproduction video signal, and
• modulating means for obtaining said write clock signal by phase modulation of said sync clock signal in accordance with a burst error signal indicative of a time base fluctuation of said color burst signal in a period of time other than a period in which at least said color burst signal in said reproduced video signal is generated;
• and
• switching relay means for selectively relaying one of a burst error signal and a horizontal sync error signal to said clock forming means in accordance with a burst error hold signal and a horizontal lock signal.