Patent ID: 9083777
Filing Date: 2015-07-14
Classification: H04B,H04M,H04N

Abstract:
1. A signal processing unit configured to process a digital signal having a voice bandwidth, comprising: a modem processing unit configured to process an image signal; a voice processing unit configured to process a voice signal; a first interface conversion unit that is connected to said modem processing unit through a first synchronous serial interface, and is configured to make a system bus and said first synchronous serial interface to said modem processing unit compatible with each other; and a second interface conversion unit that is connected to said voice processing unit through a second synchronous serial interface, and is configured to make a system bus and said second synchronous serial interface to said voice processing unit compatible with each other; wherein: said first synchronous serial interface performs a data transfer by adopting said modem processing unit that is connected to one end thereof as a master and adopting said first interface conversion unit that is connected to another end thereof as a slave; and said second synchronous serial interface adopts both of said voice processing unit and said second interface conversion unit that are connected to one end and another end thereof as a slave, and performs a data transfer between the two slaves at a transfer timing that is identical to a transfer timing of the master.