Image display method and apparatus

Details Image display method and apparatus Image display method and apparatus

1992-04-29

1993-09-28

Nguyen, Phu K.

Computer graphics processing and selective visual display system

Display driving control circuitry

Controlling the condition of display elements

395133, 395121, 395122, 345133, G06F 1572

Patent

active

052492648

ABSTRACT:
An image display apparatus in which respective L-buffers each store a depth value of a position on a front boundary surface of a clipping region, while respective Z-buffers each store a depth value of a position on a back boundary surface of the clipping region. A depth value is generated at each position on an object to be displayed in connection with a pixel position on the screen and is compared with the corresponding depth values in the L- and Z-buffers. A determination of whether each position on the object to be displayed exists in the clipping area is made in accordance with the results of the comparison with the buffer contacts.

REFERENCES:
patent: 4907174 (1990-03-01), Priem
patent: 4924415 (1990-05-01), Winser
patent: 4945500 (1990-07-01), Deering
patent: 4951232 (1990-08-01), Hannah

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