Intel Corporation

John L Allen

Ali S Oztaskin

Leonard W Cross

Bill A Munson

Roger L Traylor

Ganesh Murthy

A method and apparatus for draining video data from a planarized video buffer in a video camera. The method includes the steps of reading a first sequence of video data from a first plane of the planarized image buffer starting at a buffer address indicated by a first pointer, and then reading a second sequence of video data from a second plane of the planarized image buffer starting at a buffer address indicated by a second read pointer. The apparatus includes an address generation unit and a sequence counter. The address generation unit includes a number of read pointers each configured to indicate a memory location within a different data plane of a video buffer. The address unit is configured to address a sequence of memory locations in a video buffer starting at a location indicated by an active one of the read pointers. The sequence counter is configured to detect when a final memory location of the sequence of memory locations has been addressed by the address generation unit and, in response, to select a different one of the read pointers to be the active read pointer.

Method and apparatus for draining video data from a planarized video

A video scaling engine for scaling video data over a plurality of clock cycles is disclosed. In a first clock cycle of the plurality of clock cycles, a multiplier of the video scaling engine multiplies an input pixel by a coefficient indicated by a coefficient select signal to generate a first product. The first product is stored in an accumulator of the video scaling engine. In a second clock cycle of the plurality of clock cycles, the multiplier multiplies another input pixel by a coefficient indicated by another coefficient select signal to generate a second product. The second product is added to the contents of the accumulator to produce a sum including the first and second products. The sum including the first and second products is stored in the accumulator and then divided by a value based on at least one of the coefficients to produce a scaled output pixel.

Digital video scaling engine

An input/output adapter card for a standard bus in a computer system is disclosed that includes a nonvolatile memory that stores a plug and play identifier, a set of resource data, and a mode indication. The mode indication is programmed by an installation routine for the input/output adapter card to specify whether the input/output adapter card is plug and play compliant. The input/output adapter card accesses the mode indication and 'plays' a configuration record from the nonvolatile memory to the configuration registers if the mode indication specifies that the computer system is not plug and play compliant. The configuration record mimics configuration writes to the configuration registers by a plug and play compliant computer system.

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Hillsboro, OR, United States of America

John L Allen