Boots – shoes – and leggings
Patent
1993-11-22
1996-01-30
Mai, Tan V.
Boots, shoes, and leggings
3647081, G06F 1516, G06F 100
Patent
active
054885710
ABSTRACT:
A system for transferring data from a CRT (cathode ray tube) video display monitor on a personal computer to a portable information device such as a multifunction electronic wristwatch. The CRT video display has a video signal generator providing raster scanning of the screen and a program for formatting the binary coded data into blocks of serial data bits, with start bit and stop bit. The blocks of data are supplied to the video signal generator in synchronism with raster scanning of the screen so as to provide an integral number of one or more blocks of data for each vertical frame, and modulated to vary the brightness of the screen and provide light pulses corresponding to presence or absence of binary coded transmitter pulses. The portable information device is manipulated within line of sight of the CRT screen and has a photosensor to detect light pulses when the photosensor is directed toward the screen. Signals from the photosensor are amplified and filtered to remove ambient light source flicker and extraneous spurious light signals and to convert the receiver pulses to binary coded data blocks varying between high and low logic levels at a preselected pulse repetition rate. The portable information device stores the received data for further use.
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Insero Mark A.
Jacobs Michael A.
Crutcher William C.
Mai Tan V.
Timex Corporation
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