| 摘要 |
The improvements relating to data display techniques comprise a circuit for interpolating discrete data points of a single valued function in one direction into a continuous line display. Only one value need to be produced from a memory for each display position along one axis of an x, y coordinate system display, the circuit generates lines parallel to the oither axis which connect the display at adjacent positions along the first axis. The circuit receives from a memory (10) a series of pulse trains D each of which is delayed one clock pulse position by flip,flop (2) to produce a pulse train D min . D and D min are compared by exclusive OR gate 26 to determine the data end positions which are stored in a shift register (34). The output of shift register (34) is recirculated and supplied to OR gate (16), the composite data outputted by OR gate (18) representing the current input data D, the delayed data D min derived therefrom and data representative of end positions of data in one or more proceeding lines. AND gate (44) and AND gate (28) cooperate with nOR gate (40) to block the recirculation through shift register (34) of data representative of rise lines and fill lines for avoiding illogical rise and fall line generation. A second circuit has separate circuits for processing rise lines and fall lines. |
