US5351201A
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US
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Method and apparatus for automatic performance evaluation of electronic display devices
Assignee: MTL Systems Inc
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Filing: 1992-08-19
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Granted: 1994-09-27
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Expires: 2012-08-19
Abstract
Abstract A method and apparatus for evaluating the degradation of a video display device. Single parameter test signals and patterns, generated either internally or externally to the video device, are displayed on the screen. A sensing device such as a CCD camera reads the screen and transmits the data to a processing unit. Codes, imbedded in the test signal or pattern, indicate to the testing device what test is currently being run, the content of the test, and/or the specific setup situation. The code may be inherent in the pattern, the sequencing, or in addition thereto. The processing unit reads and interprets the results in accordance with the received test codes. The apparatus includes a portable, hand-held unit capable of detecting video degradation on a pass/fail basis. The unit is separate from the display under test and is capable of identifying and evaluating the test through the receipt and interpretation of the embedded codes in the test patterns, and evaluating performance on a go/no-go basis.
Inventors
- 👤 John H. Harshbarger, Jr.
- 👤 Michael W. Shellhause
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:13
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/30; G06F11/34; H; H04; H04N; H04N17/00; H04N17/02
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
122 words
A method for automatically evaluating the performance of an electronic audio/video device, the method comprising the steps of: generating test stimuli and inputting the stimuli to the audio/video device for outputting by the audio/video device; providing a sensor coupled to an output of the audio/video device; imbedding a code within the test stimuli which is detectable by said sensor, said code indicative of test parameters; detecting the outputted test stimuli and code and outputting data representative thereof; by means of a processor coupled to said sensor, receiving said data representative of the outputted test stimuli and said code and analyzing said data in accordance with said code to evaluate performance of the audio/video device and providing an indication of performance degradation thereof.
Claim 2
Independent Claim
122 words
A method for automatically evaluating the performance of an electronic audio/video device, the method comprising the steps of: generating test stimuli and inputting the stimuli to the audio/video device for outputting by the audio/video device; providing a sensor coupled to an output of the audio/video device; imbedding a code within the test stimuli which is detectable by said sensor, said code indicative of test parameters; detecting the outputted test stimuli and code and outputting data representative thereof; by means of a processor coupled to said sensor, receiving said data representative of the outputted test stimuli and said code and analyzing said data in accordance with said code to evaluate performance of the audio/video device and providing an indication of performance degradation thereof.
Claim 3
Dependent Claim
17 words
The method of claim 1, wherein the test stimuli are single frequency test signals of varying amplitude.
Claim 4
Dependent Claim
20 words
The method of claim 2, wherein the code is the sequence of varying amplitudes of said single frequency test signals.
Claim 5
Dependent Claim
18 words
The method of claim 1, wherein said code is a sequence of a plurality of different test stimuli.
Claim 6
Dependent Claim
17 words
The method of claim 1, including the step of displaying results of the performance degradation evaluation analysis.
Claim 7
Dependent Claim
33 words
The method of claim 1, wherein said code includes identification of at least one of: the type of test being conducted, the content of the test being conducted, and the specific audio/video setup.
Claim 8
Independent Claim
120 words
A method for automatically evaluating the performance of an electronic video display device, the method comprising the steps of: generating test stimuli and inputting the stimuli to the video display for display of a test image thereon; positioning a sensor in front of the video display; imbedding a code within the test stimuli which is detectable by said sensor, said code indicative of test parameters; detecting the image and code on the display and outputting data representative thereof; by means of a processor coupled to said sensor, receiving said data representative of the displayed image and said code and analyzing said data in accordance with said code to evaluate performance of the display and providing an indication of performance degradation.
Claim 9
Independent Claim
120 words
A method for automatically evaluating the performance of an electronic video display device, the method comprising the steps of: generating test stimuli and inputting the stimuli to the video display for display of a test image thereon; positioning a sensor in front of the video display; imbedding a code within the test stimuli which is detectable by said sensor, said code indicative of test parameters; detecting the image and code on the display and outputting data representative thereof; by means of a processor coupled to said sensor, receiving said data representative of the displayed image and said code and analyzing said data in accordance with said code to evaluate performance of the display and providing an indication of performance degradation.
Claim 10
Dependent Claim
18 words
The method of claim 7, wherein the test stimuli are single parameter video test patterns of varying intensities.
Claim 11
Dependent Claim
18 words
The method of claim 8, wherein said code is a sequence of varying intensities of said test stimuli.
Claim 12
Dependent Claim
12 words
The method of claim 7, wherein said code is a bar code.
Claim 13
Dependent Claim
18 words
The method of claim 7, wherein said code is a sequence of a plurality of different test stimuli.
Claim 14
Dependent Claim
17 words
The method of claim 7, including the step of displaying results of the performance degradation evaluation analysis.
Claim 15
Dependent Claim
33 words
The method of claim 7, wherein said code includes identification of at least one of: the type of test being conducted, the content of the test being conducted, and the specific display setup.
Claim 16
Dependent Claim
31 words
The method of claim 7, wherein the step of generating test stimuli includes automatic sequencing and timing of plural test stimuli transmitting coded testing parameters for display on said video display.
Claim 17
Independent Claim
76 words
An apparatus for automatically evaluating the performance of an electronic video display device, the apparatus comprising: means for generating predetermined test stimuli, coupled to the video device, for display on the video display, said test stimuli including an imbedded code indicative of current test parameters; means for detecting said test stimuli and said code from said video display; and means, coupled to said detecting means, for analyzing and evaluating said test stimuli according to said code.
Claim 18
Independent Claim
76 words
An apparatus for automatically evaluating the performance of an electronic video display device, the apparatus comprising: means for generating predetermined test stimuli, coupled to the video device, for display on the video display, said test stimuli including an imbedded code indicative of current test parameters; means for detecting said test stimuli and said code from said video display; and means, coupled to said detecting means, for analyzing and evaluating said test stimuli according to said code.
Claim 19
Dependent Claim
26 words
The apparatus of claim 15, further comprising a programmable memory card for enabling said apparatus to interpret and evaluate the test stimuli according the said code.
Claim 20
Dependent Claim
14 words
The apparatus of claim 16, wherein said apparatus is sized to be hand held.
Claim 21
Dependent Claim
24 words
The apparatus of claim 15, wherein said generating means sequentially produces said test stimuli at predetermined timing intervals for said analyzing and evaluating means.
Claim 22
Dependent Claim
33 words
The apparatus of claim 15, wherein said code includes identification of at least one of, the type of test being conducted, the content of the test being conducted, and the specific display setup.
Claim 23
Independent Claim
121 words
An apparatus for the automatic performance evaluation of an electronic video display device, the apparatus comprising: a camera for receiving visual information emanating from the video display and outputting data representative of the received information; a pattern generator, coupled to the video display, for producing a sequence of single parameter test patterns for display on the video display; means for imbedding a code within said single parameter test patterns indicative of the type of test being conducted; a processor, coupled to said camera, said processor receiving said data representative of the received information, including said imbedded code, analyzing said data dependent on said imbedded code to evaluate performance degradation of the video device, and providing an indication of performance degradation thereof.
Claim 24
Independent Claim
121 words
An apparatus for the automatic performance evaluation of an electronic video display device, the apparatus comprising: a camera for receiving visual information emanating from the video display and outputting data representative of the received information; a pattern generator, coupled to the video display, for producing a sequence of single parameter test patterns for display on the video display; means for imbedding a code within said single parameter test patterns indicative of the type of test being conducted; a processor, coupled to said camera, said processor receiving said data representative of the received information, including said imbedded code, analyzing said data dependent on said imbedded code to evaluate performance degradation of the video device, and providing an indication of performance degradation thereof.
Claim 25
Dependent Claim
34 words
The apparatus of claim 20, wherein said imbedded code includes identification of at least one of: the type of test being conducted, the content of the test being conducted, and the specific display setup.
References Cited (Backward Citations)
US4303938A
Cited
US4408337A
Cited
US4415927A
Cited
US4415921A
Cited
US4495519A
Cited
US4485394A
Cited
US4466014A
Cited
US4513318A
Cited
US4635096A
Cited
US4670782A
Cited
US5062055A
Cited
US4752825A
Cited
US4975846A
Cited
US5003393A
Cited
US4897721A
Cited
US4870357A
Cited
US4999703A
Cited
US4894718A
Cited
US4974080A
Cited
US5051918A
Cited
US5055928A
Cited
US5041980A
Cited
US5051816A
Cited
US5166791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-26 | 1998-03-28 | 1998-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-26 | 2002-03-28 | 2002-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-26 | 2006-03-28 | 2006-09-27 | $7700.00 | Window Closed / Lapsed |