Image interpolation circuit

Details Image interpolation circuit Image interpolation circuit

1993-07-23

1994-09-20

Hjerpe, Richard

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345138, G09G 500

Patent

active

053493699

ABSTRACT:
An image interpolation circuit is able to connect linearly the discontinued space between two coordinate points input by an outside input unit of which transmission speed is slow. After comparing two coordinate points input by the outside input unit, if they are different, the absolute values .DELTA.X and .DELTA.Y of two coordinate values are compared each other. And then, a bigger interpolation output is up or down by means of programmable up and down counter 12, 13. Such a up or down is repeated until a value totaling smaller absolute values is same as or bigger than a bigger absolute value, and then after reestablishing a beginning value, the processes are repeatedly executed. So that the linear interpolation value between two coordinate points can be obtained from a construction of hardware, and a processing speed is faster than a processing method using the prior software, thereby easily matching with other peripheral circuits because of the construction of the hardware.

REFERENCES:
patent: 4988984 (1991-01-01), Gonzalez-Lopez

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