Video memory arrangement

Details Video memory arrangement Video memory arrangement

1997-01-06

1998-10-13

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Address formation

Generating prefetch, look-ahead, jump, or predictive address

711 2, 711 5, 711219, 711220, G06F 926

Patent

active

058227890

ABSTRACT:
By providing a digital video memory arrangement with first and second address generating circuits, digital video signals can be written at a first location of a non-mechanical memory and (almost) immediately read out from a second location of the non-mechanical memory, with the reading out both being capable of featuring backward and forward jumps. As a consequence of a coupling between the first and the second address generating circuits it becomes impossible to, on the one hand, unjustly pass with jumping in the read signal the running or stopped write signal and, on the other hand, unjustly pass with the running read signal the stopped write signal. To this end the second address generating circuits dispose over determining circuits for determining, in response to at least the write signal and the read signal, a permitted address jump.

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