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Integrate and Flash Infrared Receiver With Self Logging Signal-To-Noise Ratio Capability

IP.com Disclosure Number: IPCOM000056638D
Original Publication Date: 1988-Jan-01
Included in the Prior Art Database: 2005-Feb-14

Publishing Venue

IBM

Related People

Authors:
Bustamante, C Zalph, W [+details]

Abstract

This article describes a circuit arrangement for an integrate and dump- type infrared (IR) receiver which improves signal-to-noise ratio (S/N) by integrating signal over a window of time. The receiver enables the S/N to be measured and self logged. Diffuse IR communications is closely related to fiber optics. The difference is in the fiber. For diffuse IR communication, the fiber is the room. Unlike glass waveguides, the optical characteristics of a room present infinite possibilities. It has always been a bothersome reality that some setups of IR systems in some rooms will not perform well. What has been lacking in previous IR systems is a method to ascertain the performance of a specific setup, without requiring an oscilloscope and an engineer to make measurements.