High speed paint-out graphics device LSI and method of forming paint-out drawing
AssigneeNEC Corporation
InventorMitsurou Ohuchi
Life of this patent
Estimating the term…
Abstract
A graphics device LSI capable of achieving a high speed paint-out processing, including a pattern reproduction part for forming a duplicate pattern PD of a paint-out pattern, a shift number calculation part for calculating a shift number S from a formation position of a paint-out drawing on an image memory, a paint-out pattern length and a word length, and a data extraction part for extracting paint-out data of the word length by shifting the duplicate pattern PD by the shift number S.
Claims10
A graphics device LSI for forming an optional paint-out drawing on reference to a paint-out pattern previously determined on a memory to be accessed by a h-bit word length (h:
- a natural number), comprising:
- pattern storage means for storing the paint-out pattern of an m.times.n matrix (m, n:
- natural numbers):
- pattern reproduction means for forming a duplicate pattern by reproducing a k (m.times.k.gtoreq.h) number of the paint-out patterns;
- shift number calculation means for calculating a shift number from a formation position of the paint-out drawing on the memory, a paint-out pattern length m and the word length h:
- data extraction means for extracting paint-out data of the word length h by shifting the paint-out pattern by the shift number;
- color storage means for storing color data:
- and
- color extension means for extending the paint-out data extracted by the data extraction means to a predetermined bit number to allocate the color data stored in the color storage means to the extended paint-out data every bit.
A graphics device LSI for forming an optional paint-out drawing on reference to a paint-out pattern previously determined on a memory to be accessed by a h-bit word length (h:
- a natural number), comprising:
- pattern storage means for storing the paint-out pattern of an m.times.n matrix (m, n:
- natural numbers);
- pattern reproduction means for forming a duplicate pattern by reproducing a k (m.times.k.gtoreq.h) number of the paint-out patterns;
- shift number calculation means for calculating a shift number from a formation position of the paint-out drawing on the memory, a paint-out pattern length m and the word length h;
- and
- data extraction means for extracting paint-out data of the word length h by shifting the paint-out pattern by the shift number,
- wherein the pattern reproduction means is constructed by selection signal lines, input signal lines, output signal lines and transfer gates.
A method of forming an optional paint-out drawing on reference to a paint-out pattern previously determined on a memory to be accessed by a h-bit word length (h:
- a natural number), comprising the steps of:
- storing the paint-out pattern of an m.times.n matrix (m, n:
- natural numbers);
- forming a duplicate pattern by reproducing a k (m.times.k.gtoreq.h) number of the paint-out patterns;
- calculating a shift number from a formation position of the paint-out drawing on the memory, a paint-out pattern length m and the word length h;
- extracting paint-out data of the word length h by shifting the paint-out pattern by the shift number;
- storing color data;
- and
- extending the paint-out data extracted to a predetermined bit number to allocate the color data stored to the extended paint-out data every bit.
Dependencies are inferred from the claim text.