Browse Prior Art Database

Digitizing of Graphics by Display

IP.com Disclosure Number: IPCOM000084706D
Original Publication Date: 1975-Dec-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Horton, JW: AUTHOR

Abstract

The illustrated apparatus converts engineering drawings 10 to digital form. Specifically, a vidicon 11 supplies the information to a video screen 12. A bar 13 containing a vertical array of light sensors is swept horizontally across the video screen 12 to sense the binary presence or absence of light, as would occur with engineering drawings. The occurrence of sensor signals after the start of each sweep is clocked by counter 14 to provide the horizontal positional information. The video raster format generator supplies vertical positional information to line counter 15.

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Digitizing of Graphics by Display

The illustrated apparatus converts engineering drawings 10 to digital form. Specifically, a vidicon 11 supplies the information to a video screen 12. A bar 13 containing a vertical array of light sensors is swept horizontally across the video screen 12 to sense the binary presence or absence of light, as would occur with engineering drawings. The occurrence of sensor signals after the start of each sweep is clocked by counter 14 to provide the horizontal positional information. The video raster format generator supplies vertical positional information to line counter 15.

Data selection, as well as erasure of stored data, may be accomplished by use of colored line drawings and filters for the vidicon 11, and by appropriate instructions to the computer that data is to be either stored or erased.

By programming and by signals to and from the computer on connections 16 and 17, respectively, stored data of an image may be read out onto screen 12 so as to redisplay the image as it was originally.

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