77 results about "Test screen" patented technology

An intelligent thermostat communicates with threat detectors to allow periodic remote testing of the detector. The real-time clock and calendar functions of the thermostat allow the consumer to program the day, time, and frequency of the testing. The thermostat then communicates a test control signal to each of the detectors to initiate the self-test. The communication may be wired or wireless. During testing the thermostat displays a detector test screen. Upon completion of the self-test, the thermostat displays a test results screen for user confirmation. This results screen will indicate that the test passed or failed along with any diagnostic information provided by the detector. The thermostat also provides a test initiation screen from which the consumer may initiate a detector self-test manually. Loss of communications with a detector is also communicated to the user, as is the location of the detector that first identified a threat.

Method for determining a more efficient quality assurance or reliability test screen without falsely rejecting, i.e., over stressing, short channel length devices during voltage stress test screening. Short channel lengths devices fabricated on a semiconductor wafer have a higher tendency to fail at voltage levels that would otherwise not harm long channel length devices. The failures, however, are not related to device defects. Protection to the more vulnerable devices is provided by determining the speed of the die prior to the voltage test screen, thus, segregating the devices based on operational speed performance. Next, a lower voltage is effetively applied during wafer probe test to the faster devices, which directly correspond to the population of short channel devices.

The present invention is directed to methods for facilitating video test screening on an electronic visual communications network. One step is to establish a database for a video test screening audience. The database contains audience member information and ID numbers for the audience members. A further step is establishing a test screening audience database. Audience members are selected without regard to the time a person was added to the database, or in a sequence according to the time a person volunteered to serve, or by a combination involving both techniques. Members of the audience are given a special access code to be entered with the member's identification number in order to gain access to the test video for test screening on the network. Verification codes and quizzing of the members may also be used for viewing verification.

The invention provides a screen test system and method. The screen test system shoots a section of video stream, which is displayed by a to-be-tested screen, through a shooting unit and obtains RGB three-primary-color values of all pixel points of a first frame of image in the video stream so as to be compared with a standard image. When the RGB three-primary-color values of all pixel points in the first frame of image meet demands, a second frame of image in the video stream continues to be obtained so as to judge whether displacement difference values of all pixel points of a specific object in the first frame of image meet demands and the displacement difference values of all pixel points of a specific object in two adjacent frames of images are compared so as to judge whether demands are met and when the displacement difference values of all pixel points of the specific object in the two adjacent frames of images meet demands, a tested to-be-tested screen is a non-defective product, or else the to-be-tested screen is a defective product. Therefore, the screen test method is capable of accurately testing whether the to-be-tested screen is defective or not so that the trouble of the prior manual testing of screens is substituted.

A method used for the compensation of vignetting in digital cameras has been achieved. The compensation for vignetting is done in two steps. The first step is done during production of the camera unit and involves taking and analyzing an image of a test screen, preferably a gray test screen. This results in a set of e.g. 5×5 coefficients describing a polynomial surface. The second step is done for each image that is taken by the camera and involves calculating and applying a gain-table based on polynomial coefficients to all pixels of the image to compensate vignetting.

The invention discloses a data debugging method, a device and a system thereof, wherein the method, the device and the system relate to the field of displaying technology. The method, the device and the system mainly aims to settle the following problems in performing data debugging: several debugging times, time wastage in a debugging process, artificial assistance in the debugging process, and debugging error appearance probability. The method comprises the steps of determining a target black-and-white voltage, and transmitting a control instruction for switching a picture to a white picturewhich corresponds with the target black-and-white voltage to lighting testing equipment, wherein the lighting testing equipment performs controlling on a to-be-tested screen according to the controlinstruction, and the gray scale which corresponds with the white picture is highest; receiving an actually measured brightness value which is transmitted from brightness displaying equipment and corresponds with the white picture, wherein the brightness display equipment is used for acquiring and displaying the actually measured brightness value which corresponds with the white picture when the white picture is displayed on the to-be-tested equipment; and if the difference between the actually measured brightness value and a theoretical brightness value is smaller than a preset error threshold, adjusting the black-and-white voltage which corresponds with each gray scale in the Gamma curve.

Illumination device for a dazzle-free high beam function with a plurality of LED light sources and an optical unit, with a sensor appliance to detect approaching road users and / or road users travelling in front, with a control mechanism which activates the LED light sources by means of dimming or turning them on and off depending on the sensor data supplied by the sensor assembly in such a way that an anti-dazzling area of the high beam function corresponding to the approaching road user and / or the road user travelling in front is created to prevent the road user from being dazzled, wherein at least the optical unit assigned to the high beam function includes optical elements assigned to the same LED light source, thereby producing least two light spots for every LED light source. On a test screen a first light spot comprises a vertical light / dark boundary on a left side and a second light spot comprises a vertical light / dark boundary on a right side, and that the optical elements are designed in such a way that the first light spot and the second light spot can be superimposed on each other to create a combined light spot, wherein the combined light spot comprises the vertical light / dark boundary of the first light spot or the second light spot, respectively on the left side and the right side.

The invention provides a method for testing screen color level. The method comprises the following steps: providing a display screen and a color scanner; dividing the display screen into 2 color block areas according to the bit number n of the display screen; setting different primary color level values for the color block areas so that each color block area in the 2 color block areas corresponds to a corresponding color level grade in 2 color level grades; displaying the color block areas and colors corresponding to the primary color level values set on the color block areas on the display screen; scanning all color block areas on the display screen through the color scanner, and acquiring the color level value of each scanned color block area as an output color level value of each color block area; and analyzing the color level display performance of the display screen according to the output color level value of each color block area. The invention also provides a device for testing the screen color level. The method and the device can test the color level of the display screen once so as to save test time and improve test efficiency.

The invention provides an automatic screen testing device and method. The device comprises a testing platform, a positioning unit, a testing unit and a driving unit, wherein the testing platform is used for accommodating a to-be-tested screen; the positioning unit is arranged on the testing platform for positioning the to-be-tested screen; the testing unit is used for testing a testing point on the to-be-tested screen; and the driving unit is used for driving relative movement between the testing platform and the testing unit to adjust the relative position between the to-be-tested screen andthe testing unit. According to the automatic screen testing device provided in the invention, the time cost and the manpower cost during a testing process can be saved, fixed-point and fixed-distancetesting can be realized, the testing result has reproducibility, and in comparison with the traditional manual testing mode, the testing efficiency is improved, and the testing accuracy is also ensured.