| 摘要 |
A data interfacing apparatus for interfacing a frame memory with upper and lower address electrode drivers in an alternating current type plasma display panel system is disclosed. The data interfacing apparatus includes a pair of provisional storing sections for provisionally storing RGB data supplied from the frame memory and a shift signal generator for generating a clock signal to provide the clock signal to the respective provisional storing sections. Each of the provisional storing sections includes N shift registers consisting of M delayed flip-flops. Respective input terminals of the shift registers are connected to N output terminals of the frame memory one-to-one. The respective shift registers shift M times the RGB data, which is transferred to the respective input terminals by one bit from the frame memory, and provisionally latch NxM bits RGB data in response to a clock signal. The shift signal generator produces M shift signals by using a first signal which represents a start of a horizontal line and a second signal which is a system reference clock, and then produces the clock signal by using a third signal whose logical level is alternately inverted by the period of the horizontal line and the M shift signals.
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