Methods and apparatus for testing image processing apparatus
AssigneeCrosfield Electronics Limited
InventorsIgnazio Barraco, James Bradshaw
Life of this patent
Estimating the term…
Abstract
Test equipment, for testing that an image processing apparatus is operating correctly, is coupled to the output port of the image processing apparatus. A predetermined group of signals corresponding to a portion of an image from the image processing apparatus is stored in a memory in the test equipment. The signals are then analysed either by an operator using a monitor or by electronic comparison of the signals with reference signals corresponding to the portion of the image, from a reference store.
Claims10
Test equipment for testing that image processing apparatus is operating correctly, said test equipment comprising selection means for coupling to an output port of said image processing apparatus;
- a memory for coupling to said selection means to receive digital signals from said image processing apparatus representing an image, said section means selecting a predetermined group of said signals for storage in said memory, said predetermined group of signals being a subset of said digital signals representing said image;
- and means coupled to said memory to enable said signals stored in said memory to be analyzed or automatically verified.
A method of adjusting image processing apparatus to minimize operational errors said method comprising
- a) attaching test equipment, said test equipment comprising selection means for coupling to an output port of said image processing apparatus;
- a memory for coupling to said selection means to receive digital signals from said image processing apparatus representing an image, said selection means selecting a predetermined group of said signals for storage in said memory, said predetermined group of signals being a subset of said digital signals representing said image;
- and means coupled to said memory to enable said signals stored in said memory to be analyzed or automatically verified, to an output port of the image processing apparatus to receive digital signals from said image processing apparatus representing an image;
- b) storing selected signals in the memory;
- c) analyzing the selected signals stored in the memory;
- d) adjusting said image processing apparatus to compensate for any errors detected and repeating steps b) to d) until sufficient accuracy of said image processing apparatus is achieved, and thereafter removing said test equipment.
Dependencies are inferred from the claim text.