System and Method for Processing a Video Signal With Reduced Latency

摘要

Disclosed is a video processor for a magnifier camera. In particular, the disclosure relates to a video processor that eliminates the use of a frame buffer. This, in turn, reduces the latency otherwise present in the video signal. The disclosed video processor also allows selected portions of the display to be shaded. This highlights the non-shaded portions of the display while at the same time allowing the entire object to be perceived by the user.

主权项

1. A method for processing a video signal, the method employing a camera, a microprocessor with an associated look-up table, and a monitor, the method adapted for used by a user with low vision, the method comprising the following steps:
directing the camera toward an object to be viewed, the camera generating a video signal, the video signal comprising a series of video frames, with each frame comprising an array of pixels; delivering the video signal to the microprocessor; processing the video signal via the microprocessor in accordance with instructions from the look-up table, the look-up table specifying portions of the array to be shaded and the degree of shading to be applied, with the degree of shading being such that the underlying image is not masked, wherein the shaded portions of the array function to highlight the non-shaded portions of the array and thereby facilitate viewing by the low-vision user; delivering the processed video signal to the monitor for viewing by the low-vision user, wherein the microprocessor processes the video on a pixel by pixel basis thereby eliminating the need for a frame buffer such that latency is reduced.