Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1996-08-05
1999-02-16
Lall, Parshotam S.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345506, G06F 938
Patent
active
058729640
ABSTRACT:
A unit for efficiently carrying out a comparison operation and making it possible to prevent a generation of a disturbance in a pipeline during a pipeline operation is provided. This unit includes a first storage unit for storing storage information on two data to be compared, kind of comparison operation and result of comparison operation respectively, a second storage unit for storing said two data, kind of comparison operation and result of comparison operation, an operating unit for carrying out a predetermined plurality of kinds of comparison operations for two data, a selecting unit for selecting any one of results of comparison operation, and a processing unit for carrying out a processing of a comparison operation. The processing unit checks a storage destination of two data to be compared, gives the two data to the operating unit, checks a storage destination of a kind of a comparison operation, controls the selecting unit to select a result of an operation corresponding to the kind of comparison operation, and stores the operation result into a storage destination in the second storage unit.
REFERENCES:
patent: 5345541 (1994-09-01), Kelley et al.
patent: 5371862 (1994-12-01), Suzuki et al.
patent: 5493687 (1996-02-01), Garg et al.
patent: 5560035 (1996-09-01), Garg et al.
Fujikawa Yoshifumi
Ishiguro Masao
Kojima Keiji
Nishioka Kiyokazu
Nojiri Tohru
Coulter Kenneth R.
Hitachi , Ltd.
Lall Parshotam S.
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