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The most commonly used are USB (in PCs) and UART (in mobile phones and PDAs). In Bluetooth devices with simple functionality (e.g., headsets), the host stack and controller can be implemented on the same microprocessor. In this case the HCI is optional, although often implemented as an internal software interface.
Most Bluetooth headsets implement both Hands-Free Profile and Headset Profile, because of the extra features in HFP for use with a mobile phone, such as last number redial, call waiting and voice dialing. The mobile phone side of an HFP link is Audio Gateway or HFP Server. The automobile side of HFP link is Car Kit or HFP Client.
The first Bluetooth mobile phone was the unreleased prototype Ericsson T36, though it was the revised Ericsson model T39 that actually made it to store shelves in June 2001. However Ericsson released the R520m in Quarter 1 of 2001, [23] making the R520m the first ever commercially available Bluetooth phone. In parallel, IBM introduced the IBM ...
The Backbone One controller was designed in collaboration with Astro Studios.The controller is operated by inserting an compatible device between the two handles of the device and connecting to the Lightning connector (for iPhone models featuring that connector) or the USB-C port (for Android devices and later iPhone models). [4]
Intellivision Amico controller. The system comes with two controllers, designed to be ambidextrous for right- or left-handed preference. The controllers charge in the cradle on top of the console, or via a wired USB-C connection. They charge in 2 hours, and can run for 4–6 hours on a full charge. [2]
Li-Fi modules. Li-Fi is a derivative of optical wireless communications (OWC) technology, which uses light from light-emitting diodes (LEDs) as a medium to deliver network, mobile, high-speed communication in a similar manner to Wi-Fi. [4]