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Character Selector For Directo Micro Images Composition

IP.com Disclosure Number: IPCOM000097095D
Original Publication Date: 1962-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

Treseder, RC: AUTHOR [+3]

Abstract

In the transmission of digital data over telephone lines, potential advantages of speed in visual information storage are realized only if the transmitted information is automatically prepared for storage as soon as it is received.

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Character Selector For Directo Micro Images Composition

In the transmission of digital data over telephone lines, potential advantages of speed in visual information storage are realized only if the transmitted information is automatically prepared for storage as soon as it is received.

Moving coil actuator 1 operates similarly to the moving coil of a D.C. ammeter and is rotatably suspended in a magnetic field supplied by two large permanent magnets 2 and 3. Coil 1 is attached to the center of fan-shaped member 4. This, at one end, contains an alpha-numeric character mask 5. At the opposite end, it contains a triangular slit 6. The latter, in conjunction with a fixed rectangular slit 7 and a silicon solar cell 8, provides a signal indicative of the rotational position of member 4. The present position signal is summed at the input to the amplifier with the character select signal. The latter is converted from binary to a D.C. level in the binary to D. C. converter. The amplifier thus provides a D.C. drive current to actuator 1. The current is proportional to the position error to cause member 4 to be driven to the selected rotational position. When the selected rotational position is reached, the character which lies on the optical axis of lens 9 is imaged onto the film 11 by lens system 9 and 10.

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