Electrical computers and digital processing systems: memory – Storage accessing and control – Shared memory area
Patent
1996-08-26
2000-05-02
Gossage, Glenn
Electrical computers and digital processing systems: memory
Storage accessing and control
Shared memory area
711147, 709247, 710 68, 345511, G06F 1314
Patent
active
060584599
ABSTRACT:
An electronic system provides direct access between a first device and a decoder/encoder and a memory. The electronic system can be included in a computer in which case the memory is a main memory. Direct access is accomplished through one or more memory interfaces. Direct access is also accomplished in some embodiments by direct coupling of the memory to a bus, and in other embodiments, by direct coupling of the first device and decoder/encoder to a bus. The electronic system includes an arbiter for determining access for the first device and/or the decoder/encoder to the memory for each access request. The arbiter may be monolithically integrated into a memory interface of the decoder/encoder or the first device. The decoder may be a video decoder configured to decode a bit stream formatted to comply with the MPEG-2 standard. The memory may store predicted images which are obtained from a single preceding image and may also store intra images. Bidirectional images which are directly supplied to a display adapter may be obtained from two preceding intra or predicted images.
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Colavin Osvaldo
Diaz Raul Zegers
Owen Jefferson Eugene
Carlson David V.
Galanthay Theodore E.
Gossage Glenn
Jorgenson Lisa K.
STMicroelectronics Inc.
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