Apparatus and method for extracting a portion of an image

Details Apparatus and method for extracting a portion of an image Apparatus and method for extracting a portion of an image

1996-07-24

1999-12-07

Hjerpe, Richard A.

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345507, 382232, G09G 500

Patent

active

059991615

ABSTRACT:
An apparatus and method for extracting a desired portion of an image represented by compressed data. The compressed data is expanded in an expanding circuit and outputted therefrom in accordance with clock pulses. Such clock pulses, or data transfers or addresses associated therewith, are counted so as to determine the position of the data. The determined position of the data is compared to the desired portion so as to determine whether the data is within the desired portion. If the data is determined to be within the desired portion, such data is stored in an image memory. As a result, such extraction may be performed without utilizing an additional memory for temporarily storing the expanded data.

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patent: 5329616 (1994-07-01), Silverbrook
patent: 5513301 (1996-04-01), Wakasu
patent: 5801776 (1998-09-01), Tamura et al.
patent: 5826035 (1998-10-01), Hamada et al.

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