Patent ID: 6891572
Filing Date: 2005-05-10
Classification: H04N

Abstract:
1. A signal processing apparatus for converting the pixel number or the scanning line number of an input video signal compatible with a format of a first video system, comprising: a first production unit operable to produce first signal based on a horizontal synchronizing signal included in the input video signal; a storage unit operable to store the input video signal in synchronization with said first signal as a stored video signal; a second production unit operable to divide a frequency of said first signal by a first value to produce an intermediate signal and to multiply said intermediate signal by a second value to produce a second signal; a readout device operable to read out said stored video signal in synchronization with said second signal as a readout video signal such that during a readout operation the line number of an odd-numbered field is equal to the line number of an even numbered field; and a conversion unit operable to convert the pixel number or the scanning line number of said readout video signal into a format compatible with a second video system.