Patent ID: 8199253
Filing Date: 2012-06-12
Classification: H04N

Abstract:
1. A clock range setting device, setting N lead clock ranges corresponding to N video signals according to N framing codes and N horizontal synchronizing pulses, wherein N is a positive integer, the clock range setting device comprising: a horizontal counter configured to count a horizontal counter value and reset the horizontal counter value when the horizontal counter receives one of the horizontal synchronizing pulses; a filter unit generating a plurality of clock intermediate values, the filter unit obtaining a lead clock of the i a clock detecting unit detecting a level change of the lead clock of the (i+1) a first infinite impulse response filter (IIR filter) generating a plurality of number mean values, and the first IIR filter averaging the current clock cycle numbers of the lead clocks of the 1 a clock range modulator configured to set an end position of the (i+1)