May 1999
Intermediate to advanced
272 pages
6h 16m
English
Content preview from Optoelectronics Circuits Manual, 2nd Edition
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12
IR remote-control systems
Chapter 1 of this volume briefly mentioned the fact that IR light-beam systems can be used for remote-control purposes. This final chapter of the book expands on this theme by explaining the basic operating principles of IR remote-control systems, and by giving hints on how to use modern IR remote-control ICs.
Remote-control systems
All modern remote-control systems take the basic form shown in Figure 12.1, and consist of a remote-control transmitter and a remote-control receiver that are linked by some type of transmission medium. At the transmitter end of the system, a ‘control’ instruction is selected via the keyboard, is converted into a multi-bit digital word by a digital encoder, and is then transmitted
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