US Patent 7707450 Time shared memory access

Apparatus and method are provided for accessing information in a storage area including a storage area which is accessible by a first buss and a second buss. The access by the first buss is clocked by a first clock signal and the access by the second buss is clocked by a second clock signal. The first clock signal has a first clock frequency and the second clock signal has a second clock frequency. A terminal receives a base clock signal having a frequency of at least the sum of the first clock frequency and the second clock frequency. An access to the storage area by the first or second buss is made during a cycle of the base clock.