Patent ID: 8068179
Filing Date: 2011-11-29
Classification: H04N

Abstract:
1. An on-screen display (OSD) device, comprising: a memory, for storing an OSD data; a processing unit, connected to the memory, for reading the OSD data from the memory and producing a compressed OSD image data and an OSD information; a buffer, for temporarily storing the compressed OSD image data; a buffer controller, connected between the buffer and the processing unit, for controlling an access of the buffer; a decompression engine, connected to the buffer controller, for decompressing the compressed OSD image data of the buffer into an OSD image data and storing the OSD image data in the buffer through the buffer controller; and an OSD video processing engine, connected to the buffer controller, for receiving the OSD information outputted from the processing unit through the buffer controller and producing an OSD image display data based on the OSD information and the OSD image data stored in the buffer, wherein, the decompression engine performs a non-lossless decompression on the compressed OSD image data, and the non-lossless decompression is JPEG decompression.