NEC Infrared Transmission Protocol

A project log for IR Wearable Human/pet tracking and Gesture Control

Humans and Pets wear small invisible beacons that allow robots and smart homes to track and easily recognize humans and pets

Josh StarnesJosh Starnes 08/22/2018 at 21:070 Comments

he NEC IR transmission protocol uses pulse distance encoding of the message bits. Each pulse burst (mark – RC transmitter ON) is 562.5µs in length, at a carrier frequency of 38kHz (26.3µs). Logical bits are transmitted as follows:

When transmitting or receiving remote control codes using the NEC IR transmission protocol, the WB_IRRC performs optimally when the carrier frequency (used for modulation/demodulation) is set to 38.222kHz.

  When a key is pressed on the remote controller, the message transmitted consists of the following, in order: