Patent ID: 8010723

Claim:
A controller, comprising: at least one data processing means for realizing a first data channel ( 1 ) and a second data channel ( 2 ); a data transmission means ( 3 ) connected to said first and second data channels ( 1 , 2 ), wherein said data transmission means ( 3 ) is configured to transfer data from at least one of said first and second data channels ( 1 , 2 ) to a higher-order device ( 5 ) that is connectable to the controller and a host lock ( 4 ) wherein said host lock ( 4 ) is configured to influence the data transmission to said higher-order device ( 5 ), wherein said host lock ( 4 ) comprises bi-directional data bus drivers and uni-directional address bus drivers and is controlled via a data release signal ( 6 ), wherein said data transmission is realized using said data transmission means ( 3 ), and wherein at least one channel ( 1 , 2 ) is configured to use a physical data interface for the data exchange with the data transmission means ( 3 ), wherein said physical data interface is the same data interface that uses the data transmission means ( 3 ) to exchange data with the host lock ( 4 ).