Patent ID: 7450117
Filing Date: 2008-11-11
Classification: H04N

Abstract:
1. A synchronous signal/active signal restoring apparatus comprising: an optical signal receiving unit for receiving an optical signal through an optical fiber from a source device; a serial/parallel converter for converting a serial data of the optical signal received from the optical signal receiver into 10 bit parallel data; a decoder for converting the 10 bit parallel data outputted from the serial/parallel converter into an 8 bit parallel data; a first image signal processor for separating an image signal, a header and a tail from an image signal packet among output signals decoded from the decoder, and recognizing resolution information of the image signal through the image signal characteristic packet; a first clock signal generator for generating a clock signal with a predetermined frequency according to the resolution information recognized by the first image signal processor; a horizontal active signal/synchronous signal restoring unit for receiving the header, the tail and the resolution information from the first image signal processor, and restoring horizontal synchronous signal/active signal; a vertical active signal/synchronous signal restoring unit for receiving the header and the resolution information from the first image signal processor and the horizontal synchronous signal from the horizontal active signal/synchronous signal generator, and restoring a vertical synchronous signal/active signal; and an image signal outputting unit for receiving the separated image signal from the first image signal processor, and outputting an image signal according to the horizontal active signal restored in the horizontal active signal/synchronous restoring unit.