Intel Corporation

David Dea

Kevin Harney

Gary Loeser

A dequantization device is provided for receiving input quantized data values and providing output dequantized data values. A conditional decrement device receives the input quantized data values and conditionally decrements the input data values according to determinations made with respect to the input data values. The conditionally decremented values are applied to a multiplication device which multiplies them by a quantization factor. The output of the multiplication device is applied to a second conditionally decrementing device wherein the multiplication output is decremented according to determinations with respect to the input quantized data value and the quantization factor. The output of the further conditional decrementing device is representative of the output dequantized data values. In this manner, dequantization is performed using only two decrements and a multiply.

Dequantization using decrements and multiply

A video processor system has memory locations for storing images including a buffer block of memory locations. Two separate video processors within the system read and write the buffer block while performing video processor functions. Each of the two video processors has its own read pointer and its own write pointer for indicating locations within the buffer block where it is currently reading or writing an image which it is processing. Both sets of read and write pointers advance through the buffer block as the images are processed. When the pointers reach the end of the buffer block they wrap around to the beginning thereby defining circular buffers. The operations of the two video processors, as well as the reading, advancing, and adjusting of the pointers, is adapted to cause the circular buffers to occupy the same physical memory locations simultaneously.

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Honeybrook, PA, United States of America

David Dea