Clock detection and phase lock loop device for digital audio equipment for high-definition television

摘要

The present invention relates to a clock detection and phase lock loop apparatus for a digital audio apparatus for a high-definition television, and a method of detecting a synchronous signal having a different length according to a digital audio format by receiving audio data transmitted in serial 1 bit, A phase-locked loop (PLL) is a phase-locked loop in which a phase-locked loop output frequency is divided by the frequency of an input signal, The present invention can be applied to all digital audio equipment and analog audio equipment by obtaining the synchronous loop frequency and maintaining the constant frequency until the digital audio system is reset.