H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 5/46 (2006.01) H04N 7/01 (2006.01) H04N 9/64 (2006.01)
Patent
CA 2152659
The invention relates to a digital multistandard decoder for composite video signals. The multistandard decoder according to the invention can selectively process NTSC or PAL video signals. It comprises a sample rate converter, which converts the sample values of the video signals digitized with a first predetermined clock frequency into video signal sample values of a second virtual sampling frequency, has a phase-locked loop for controlling the sample rate converter, a sync detector, in order to determine the line sync pulse and set the virtual sampling frequency to an integer multiple of the line frequency of the video signal, and a burst detector in order to set the virtual sampling frequency synchronously with the phase of the color subcarrier signal of the video signal, and a decoding -demodulating device.
Harris Corporation
Oldham Edward H.
LandOfFree
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