Method for forwarding remote control signal

Abstract

The invention relates to a process for relaying remote control signals, specifically to a method using wireless communicating for relaying optical signals, which resolves the code error problem due to accumulated deviation in the relaying. The method includes: a transmitter receiving remote command signals sent by an infrared remote-controller, and digitalizing them into a set of codes and storing in order in a first memory cell group; the transmitter establishing a digital coding classification table, analyzing the affiliated category number of each encode value in the first memory cell group in order according to the classification table, and storing in order in a second memory cell group; the transmitter transmitting various category numbers in the second memory cell group in order toa receiver, the receiver receiving and storing the category number sequence; the receiver establishing a digitization encode classification table; the receiver reverting the category number sequence into a group of remote command codes with positive and negative impulse width duration time sequence according to the classification table, and then transferring to infrared sensors on the household electrical appliance in an infrared ray transmission mode.

Description

technical field [0001] The invention relates to a method for transmitting optical signals by using wireless communication. Background technique [0002] Household appliances generally use infrared remote controllers to select and control functions. However, the optical signal transmission system composed of the infrared remote control transmitter and the infrared receiver on the household appliance has the disadvantages of short control distance and the transmission light path is easily blocked by obstacles. In order to solve the above problems, people have designed a remote control signal forwarding system that relays by means of radio communication. For example, Chinese invention patent application publication CN 1835041A discloses a patent application number of 200610020556.2 and a technical solution titled "Remote Control Signal Transmitting System and Method", and proposes that the remote control signal forwarding system includes a transmitting device and a receiving d...

AI Technical Summary

Problems solved by technology

However, due to the influence of factors such as changes in the distance of optical signal transmission, changes in battery power, and deviations in the modulation frequency between optical signal transmission and reception, the duration of each feature value in the remote control command signal sent by the infrared remote control is different from that of household appliances. The duration deviation of the corresponding signal output by the infrared receiver on the

In the above technical solution, there are essentially two levels of infrared light signal transmission and reception. The accumulated deviation may lead to bit errors in some cases, that is, failure of forwarding and transmission, and the infrared remote control can no longer control the corresponding household appliances.

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