Often the adoption of new technologies is fast, especially in the consumer electronics arena. If this technology is new and cool, consumers will accept it soon.
However, sometimes even with better technology, the old technology is used as it is, and the remote control used at home is like this. Most people still use the old-fashioned infrared (IR) remote control, which has a short effective range and needs to point to the remotely controlled device without any interactivity. When using the infrared remote control, the user still needs to view the screen of the controlled device to ensure that the correct channel is selected, or to check if the volume is turned down or up, or to navigate through the menus to execute the appropriate commands.
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When we lock the door or drive the door, we usually don't have to point our car key to the car. We don't have to point the phone to the base station when we call. The reason is very simple, because you probably don't know where the base station is. The notebook does not have to point to the Wi-Fi router. But we still need to point the infrared home electronics remote control to the TV. If we have something between the TV and the TV, or if the two are too far apart, we know that we can't operate the remote control correctly. This is really too earthy.
Among the many new communication technologies, the prior art can provide distance, speed and interactivity that infrared cannot provide. Ultra-low power wireless technology enables manufacturers to create remote controls that never need to be recharged or replaced. Since the battery is small and connected, it means that the next-generation remote control eliminates the need for battery cover that is often damaged and lost.
These RF-enabled remotes easily transmit data through walls and cabinet doors and enable "two-way" communication, allowing wireless devices or televisions to provide feedback to the remote, such as channel or volume information. At this time, the user does not need to repeat such a thing: first look at the keyboard on the remote control, and then glance at the "green bar" on the TV screen. This two-way remote control concept also helps promote interactive TV with remote voting and true TV shopping. RF technology provides manufacturers with freedom of design, giving users the freedom to place their devices in a cabinet that closes the door. In order to match the advanced flat-panel TV hanging on the wall, users no longer have to put the DVD player or set-top box on an open shelf.
Let's take a closer look at the RF control equipment. Compared to infrared, RF technology is faster and more reliable, and the price is basically close.
Some of the world's leading consumer electronics companies (such as Panasonic, Philips, Samsung and Sony) have recognized that there are too many types of protocols for infrared remote control. So they worked together to form the RF4CE Alliance and established a global RF remote control standard. The standard selects the global frequency band 2.4GHz (common such as Bluetooth and Wi-Fi), and the protocol is based on the IEEE 802.15.4 standard that began in 2003.
In addition, the advantage of an open standard is that it can invite other companies to develop their own applications based on this standard: adjust/switch lighting, open/pull curtains, and control the picker (or air conditioner). In theory, these functions can also be realized with an infrared remote control, but historical experience has shown that a large number of different infrared protocols have become major development roadblocks, and this roadblock is the object to be solved by RF and the new RF4CE standard. RF technology provides high-speed, low-latency, high-throughput, two-way communication for high-speed content browsing, touchpad operation, gaming, and even high-resolution display on the remote. This high-speed RF remote control will have a huge impact on the user experience. Once standard, the RF remote will be able to perform much more than switching TV channels.
During the transition from infrared to full RF, a universal remote control solution can be used, which includes a spare infrared remote control to support legacy systems. This combined solution allows for the simultaneous support of both infrared and RF devices using a single universal remote.
GreenPeak's reference design supports low cost and high reliability communications. The reference design contains a protocol stack of less than 4KB. The embedded IEEE 802.15.4 MAC enables products to be released in a short period of time and enables simple, stable and reliable software programs. In addition, this reference design uses a single-layer, low-cost PCB with integrated antennas to ensure that the material cost per remote is less than $2.
The above reference design also allows designers to develop ultra-low power RF systems with long battery life. The RF remote control equipped with the GreenPeak communication controller is maintenance-free: a watch-type battery can support the entire life of the remote control. A 2032 battery can be used for more than 15 years without replacing or charging the remote control.
By taking advantage of ultra-low power energy-saving technologies, RF remotes are expected to work longer with smaller batteries. Coupled with the standardization of a remote control can be used for multiple devices, which means that with the popularity of new technologies, battery usage will be less and less. This is very beneficial to our environment and the development of a green economy, because the battery contains heavy metals, toxic chemicals and other materials that may pollute our planet.
In the field of audio and video consumer electronics, RF4CE is the only open standard for RF remote control applications with low power consumption, convenient and intuitive pairing, instant response, frequency agility, coexistence with other 2.4 GHz communication systems, robust connectivity, Security and the benefits of supporting multiple applications. RF can also be used to control other different applications such as home automation, nursing monitoring, security, and more.
In fact, the RF remote control is developing very fast, and the infrared remote control is being phased out. This speed is amazing. When we look back at these ancient infrared remote controllers in a few years, we will be very surprised: we must face the family. The entertainment system can be manipulated.
Figure 1: The low-power Emerald GP500C communications controller, dual-diversity antenna, and remote reference design for infrared and RF transmitters using GreenPeak make it easy to transition from an infrared remote to an RF remote.
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