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US 6,151,074 AGranted
Integrated MPEG decoder and image resizer for SLM-based digital display system
AssigneeTexas Instruments Incorporated
InventorWilliam B. Werner
Life of this patent
Estimating the term…
Abstract
A video processing unit (13) that decodes compressed video data and resizes the image represented by the video data. The video processing unit (13) has two processing engines--a decoding engine (24) and a scaling engine (25), which share a memory (23). A memory manager (22) handles data requests from the two engines, and handles reading and writing of the memory (22).
Claims15
A digital video processing unit that decompresses an input signal carrying compressed video data and resizes the image represented by the data, comprising:
- a decoding engine programmed to decompress said compressed video data, thereby providing decompressed video data;
- a scaling engine programmed to scale said decompressed video data;
- a memory that stores said compressed video data prior to delivery to said decoding engine and stores said decompressed video data prior to delivery to said scaling engine;
- and
- a memory manager in data communication with said decoding engine, said scaling engine, and said memory, said memory manager operable to respond to data request signals from said decoding engine and from said scaling engine and operable to generate address signals for storing data in said memory;
- wherein said memory has a single data port that delivers said compressed video data and said decompressed video data to said memory manager.
3 more elements
A video display system having a spatial light modulator with a display size, comprising:
- a signal interface that receives a compressed video signal;
- a video processing unit having a decoding engine programmed to decompress said compressed video data thereby providing decompressed video data, a scaling engine programmed to resize said decompressed video data to match said display size thereby providing YCbCr pixel data, and a shared memory accessible by said decoding engine and said scaling engine;
- a picture quality unit operable to convert said YCbCr pixel data to RGB pixel data;
- a frame buffer operable to format said RGB pixel data into bit-plane format and to deliver said RGB pixel data to said spatial light modulator and;
- at least one spatial light modulator operable to display images based on said RGB pixel data;
- and
- display optics operable to direct said images to an image plane.
4 more elements
Dependencies are inferred from the claim text.