| 摘要 |
PURPOSE: To enable the data compression and decompression high in performance by using code signals allocated as a character string composed of one extension character and a prefix string for each new character string in digital data input. CONSTITUTION: Compression code signals on a bus 50 are received and the corresponding string of decompressed data character signals is supplied onto the bus 51 by this decompression device. The compression code signals are obtained from an external device, and when added to the bus 50, data usable signals are supplied to a line 52 at all times. The signals are added to a controller 53 and the controller 53 supplies control signals through a lead 53 to all the blocks of the decompression device. Also, input data strobe signals for requesting additional input code signals are supplied through the line 55 to the external device. When one output character is usable on the bus 51, the controller 53 supplies output data strobe signals to the external device on the lead 56. |
