Automated test for displays using display patterns

Claim 3

The apparatus according to claim 1 wherein the controlling means comprises a micro-computer coupled to the receiver.

Claim 4

The apparatus according to claim 2 wherein the micro-computer is coupled to the receiver via an RS-232 link.

Claim 5

The apparatus according to claim 2 wherein the micro-computer is coupled to the receiver transmits a program to the receiver for controlling the receiver.

Claim 6

The apparatus according to claim 2 wherein the micro-computer is coupled to an image digitizer for digitizing an image of the display device.

Claim 7

The apparatus according to claim 1 wherein the measuring means comprises at least one camera coupled to a micro-computer for providing an image of the display device.

Claim 8

The apparatus according to claim 6 wherein the at least one camera is coupled to the micro-computer via an RS-170 link.

Claim 9

The apparatus according to claim 7 wherein the RS-170 link is first coupled to an image digitizer coupled to the micro-computer.

Claim 10

The apparatus according to claim 1 wherein the receiver comprises a selective call receiver.

Claim 11

The apparatus according to claim 1 wherein the measuring means includes a high-frequency florescence lighting source for providing an adequate and an evenly distributed back-ground light.

Claim 12

The apparatus according to claim 1 wherein the measuring means comprises at least one camera for taking an image of the reference display pattern and at least one image of the plurality of display patterns.

Claim 13

The apparatus according to claim 11 wherein the reference display pattern comprises a blank display pattern.

Claim 14

The apparatus according to claim 11 wherein the display patterns comprises a plurality of preselected patterns.

Claim 15

The apparatus according to claim 1 wherein the controlling means includes a means for transferring a control program into the receiver for generating the reference display pattern and the plurality of display patterns and for synchronizing the displaying of reference display patterns and the plurality of display patterns with the measuring means.

Claim 16

The apparatus according to claim 1 wherein the comparing means includes a means for computing a difference of the image of the reference display pattern and the images of the plurality of display patterns for determining the integrity of display device.

Claim 17

The apparatus according to claim 15 wherein the comparing means includes a means for computing an absolute value of the difference of the image of the reference display pattern and the image of at least one of the plurality of display patterns.

Claim 18

The apparatus according to claim 16 wherein the determining means comprises a means for computing a contrast, a size, and a position of a plurality of illuminated patterns of the absolute value of the difference of images on the display device.

Claim 19

A test apparatus for testing a receiver having a display device, comprising: a micro-processor for controlling the receiver for producing a plurality of display patterns on the display device by transferring a program into the receiver via a coupling link, said plurality of display patterns includes a reference display pattern; at least one camera for providing an image of a blank display and an image of each of the plurality of display patterns; and means for comparing the images of the plurality of display patterns with the image of the reference display pattern wherein said image of the reference display comprises the image of the blank display, said microprocessor comprising: a digitizer coupled to the at least one camera for digitizing the images; means for computing a difference of the image of the blank display and the image of the plurality of display patterns; and means for comparing the computed difference to a pre-determined value corresponding to that displayed pattern for determining the integrity of that display device.

Claim 20

A test apparatus for testing a receiver having a display device, comprising: a micro-processor for controlling the receiver for producing a plurality of display patterns on the display device by transferring a program into the receiver via a coupling link, said plurality of display patterns includes a reference display pattern; at least one camera for providing an image of a blank display and an image of each of the plurality of display patterns; and means for comparing the images of the plurality of display patterns with the image of the reference display pattern wherein said image of the reference display comprises the image of the blank display, said microprocessor comprising: a digitizer coupled to the at least one camera for digitizing the images; means for computing a difference of the image of the blank display and the image of the plurality of display patterns; and means for comparing the computed difference to a pre-determined value corresponding to that displayed pattern for determining the integrity of that display device.

Claim 23

The method for testing the display device according to claim 19 wherein the receiver is controlled by transferring a control program into the receiver for generating the reference pattern and the plurality of display patterns and for synchronizing the display device.

Claim 24

The method for testing the display device according to claim 19 wherein the images of the plurality of the display patterns and the image of the reference pattern are provided by at least one camera.

Claim 25

The method for testing the display device according to claim 21 wherein the images of the plurality of the display patterns and the image of the reference pattern are digitized and a difference of the images are computed for determining the integrity of the display device.

Claim 26

The method for testing the display device according to claim 22 wherein an absolute value of the difference of the image of the reference pattern and each of the images of the plurality of display patterns are computed to for determining the integrity of the display device.

Claim 27

The method for testing the display device according to claim 23 wherein a contrast, a size, and a position of a plurality of illuminated patterns are computed from the absolute value of the difference between the image of the reference pattern and the images of the plurality of the display patterns.

Claim 28

The method for testing the display device according to claim 24 wherein the computed absolute value of the difference is compared with a pre-determined value corresponding to that display device.

Claim 29

A test apparatus for testing a selective call receiver having a display device capable of displaying a plurality of display patterns, comprising: a micro-computer for controlling the selective call receiver for producing the plurality of display patterns on the display by transferring a program into the selective call receiver via a coupling link, said plurality of display patterns includes a reference pattern; at least one camera for providing an image of a blank display corresponding to the reference pattern and an image of at least one of the plurality of display patterns; and means for measuring the plurality of display patterns and the reference pattern of the selective call receiver, said microcomputer comprising: a digitizer coupled to the at least one camera for digitizing the images; means for computing a difference of the image of the blank display and at least one of the image of the display pattern; and means for comparing the computed difference to a pre-determined value corresponding to that displayed pattern for determining the integrity of that display device.

Claim 30

A test apparatus for testing a selective call receiver having a display device capable of displaying a plurality of display patterns, comprising: a micro-computer for controlling the selective call receiver for producing the plurality of display patterns on the display by transferring a program into the selective call receiver via a coupling link, said plurality of display patterns includes a reference pattern; at least one camera for providing an image of a blank display corresponding to the reference pattern and an image of at least one of the plurality of display patterns; and means for measuring the plurality of display patterns and the reference pattern of the selective call receiver, said microcomputer comprising: a digitizer coupled to the at least one camera for digitizing the images; means for computing a difference of the image of the blank display and at least one of the image of the display pattern; and means for comparing the computed difference to a pre-determined value corresponding to that displayed pattern for determining the integrity of that display device.