Asynchronous PCM common decoding apparatus

DETAILED DESCRIPTION It is one object of the present invention to provide an asynchronous PCM common decoding apparatus free from the above-mentioned disadvantages of the prior art systems and capable of making economical multidestinational operations possible.
Another object of the present invention is to provide an asynchronous PCM common decoding apparatus capable of receiving a plurality of digital signals asynchronous to each other and capable of decoding the received signals by means of a common decoder.
The present PCM common decoding apparatus in which a plurality of time division multiplexed digital signals asynchronous to each other are received and decoded, is comprised of a plurality of receiver units each of which generates at its output a digital signal to be decoded, a channel-number-designating signal for designating the number of the channel to which an analog signal obtained from the decoding of said digital signal is to be fed, and a decode-requesting signal for requesting the decoding of said digital signal, one or more decoders each of which produces at its output a status signal for representing that said digital signals given from said receiver unit are acceptable, and a common control unit responsive to said request signals given from said receiver units and said status signals given from said one or more decoders for successively allotting a combination of a given receiver and a given decoder and for sending a data transfer command signal to the allotted receiver unit so that said digital signal to be decoded and said channel-number designating signal for designating the number of the channel may be transferred from the allotted receiver unit to the allotted decoder and also sending a decode command signal to said decoder.