In the absence of a viable standard, the microcontrollers can be used to emulate the ambiguous protocols used by the old dedicated encoder/decoder chips and it appears that this is often the case. This makes it easier to keep the same codes when moving the buttons on the remote.Īlso, the decoder functionality will often be integrated into a more complicated microcontroller that controls the AV device, eliminating the need for the separate chip. With the ready availability of inexpensive microcontroller chips, many remotes may be based on such chips today rather than dedicated remote control encoder chips. The code listings inform about for any universal remote. Manufacturers of consumer appliances often reuse the same protocol on many similar devices, though for each manufacturer and device type there are usually multiple protocols in use. Similarities between remotes are often largely the accidental result of the finite selection of infrared encoder/decoder chips (though now microcontrollers are also used) and IR receiver modules or imitation of the older chips rather than by design. Since the consumer IR protocols are for the most part not standardized, computers and universal remotes often memorize a bit stream, possibly with compression and possibly without determining the actual bit rate, and play it back. The type, speed, bandwidth, and power of the transmitted information depends on the particular CIR protocol employed.ĬIR is the most common type of free-space optical communication. For instance, a television remote control can convey a 'channel up' command to the television, while a computer might be able to surf the internet solely via CIR.

The functionality of CIR is as broad as the consumer electronics that carry it. CIR ports are commonly found in consumer electronics devices such as television remote controls, PDAs, laptops, and computers.

( October 2014) ( Learn how and when to remove this template message)Ĭonsumer IR, consumer infrared, or CIR is a class of devices employing the infrared portion of the electromagnetic spectrum for wireless communications. Please help improve it by rewriting it in an encyclopedic style. This article is written like a personal reflection, personal essay, or argumentative essay that states a Wikipedia editor's personal feelings or presents an original argument about a topic.

Ir files bitrate converter