| 摘要 |
PURPOSE:To realize a high-speed decoding by giving the control so that the buses different from each other may be tracted at one time for the tree-shaped code for the CPU in the search mode. CONSTITUTION:Decoders 11, 12-1N are provided along with CPU2 which controls these decoders. When these decoders are put into the state under which they can have no retard with the present threshold level, they leave the control to CPU2 and are put under the queuing state. And CPU2 stops the decoder under the queuing state if other decoders are under execution, and gives continuation of the operation to the decoder under the queuing state in case no other decoders have execution. And the threshold level of the decoder is lowered down to start advance; and when the advance becomes impossible again, the control is left to CPU2. In this way, CPU2 gives the control so that decoders 11-1N may trace the different buses of the tree-type code at one time when the search made is secured, thus realized a high-speed decoding. |
