EP0442685A1
Expired / Lapsed
EP
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Method and system for measurement of characteristics of image display
Assignee: Sony Corp
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Filing: 1991-02-11
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Granted: —
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Expires: 2011-02-11
Abstract
Abstract A method for measurement of characteristics of image display includes a step of an arangement of an axis of face plane of a display and an axis of light detector with predetermined angle obliquity. A predetermined image is displayed on said face plane of a display. The displayed image is picked-up by means of a light detector. Based on the picked-up image which is oblique to axis of the light detector, characteristics of the display is derived.
Inventors
- 👤 Nakagawa C/O Patents Division Yoshiki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 19:01
CPC Classifications
H; H04; H04N; H04N17/00; H04N17/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
A method for measurement of characteristics of image display comprising the steps of: a step of an arrangement of an axis of face plane of a display and an axis of light detector with predetermined angle obliquity; a step of displaying an image for measurement on said face plane of a display; a step of taking image of said image of measurement by said light detector; a step of measurement of characteristics of said display based on said image of measurement taken by said image detector.
Claim 2
Dependent Claim
49 words
A measurement apparatus of a characteristics of image display comprising: an image detector being so arranged as to orient the axes thereof in oblique to axes of a display means; an image processing apparatus being supplied the taken image by said image detector and measuring characteristics of said display.
Claim 3
Dependent Claim
18 words
A measurement apparatus as set forth in claim 2, which further comprises a camera incorporating said image detector.
Claim 4
Dependent Claim
23 words
A measurement apparatus as set forth in claim 2, wherein said image processing means comprises CPU, an image memory and an analog-to-digital converter.
Claim 5
Dependent Claim
34 words
A measurement apparatus as set forth in claim 2, which further comprises a color television receiver to be measured, and a display for displaying the result of measurement supplied from said image processing apparatus.
Claim 6
Dependent Claim
39 words
A measurement apparatus as set forth in claim 2, which further comprises a result display displaying a result data supplied from said image processing apparatus, which result display is provided as external unit of said display to be measured.
Claim 7
Dependent Claim
17 words
A measurement apparatus as set forth in claim 6, wherein said result display is LED display apparatus.
References Cited (Backward Citations)
EP0087652A1
Cited
EP0282369A1
Cited
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