Patent ID: 8243195

Claim:
A method, comprising: receiving a first sequence of interlaced video fields at a first display rate; performing a display rate conversion on the first sequence of interlaced video fields to generate a second sequence of interlaced video fields at a second display rate; wherein performing comprises regularly generating at least one of a field skip command or a field repeat command so as to apply a field skip or field repeat and convert from the first display rate to the second display rate; and detecting cadence in said second sequence of interlaced video fields based on at least one search for a cadence pattern in a sequence of bits representative of motion in at least a part of a field from one field to another in the second sequence of interlaced video fields; wherein detecting cadence comprises receiving said at least one of the field skip command or field repeat command and adjusting the cadence detection in response to the received field skip command or field repeat command so as to account in a detected cadence for said applied field skips or field repeats that produce the second display rate.