File:Larky Test Pattern (color bars).gif

Original file (1,618 × 1,272 pixels, file size: 50 KB, MIME type: image/gif)

Summary

Description
English: Electronic signal to generate color bar pattern for video system testing and adjustment.
Date
Source U.S. Patent
Author N.D. Larky et al, excerpted by algocu

Licensing

Summary

Description
English: Front page of Larky Color Test Pattern patent.
Date
Source [1], p. 1
Author N. D. Larky et al
Permission
(Reusing this file)
Public ___domain The text and illustrations of US patents published before March 1, 1989 are in the public ___domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)

The original patent contains no such notice, so its contents are in the public ___domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public ___domain for another reason, such as {{PD-ineligible}}.

Captions

Early rendition of color bar test pattern

27 April 1951

image/gif

File history

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Date/TimeThumbnailDimensionsUserComment
current14:53, 16 August 2021Thumbnail for version as of 14:53, 16 August 20211,618 × 1,272 (50 KB)AlgocuUploaded a work by N.D. Larky et al, excerpted by algocu from U.S. Patent with UploadWizard

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