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The Bluetooth protocol RFCOMM is a simple set of transport protocols, made on top of the L2CAP protocol, providing emulated RS-232 serial ports (up to sixty simultaneous connections to a Bluetooth device at a time). The protocol is based on the ETSI standard TS 07.10. RFCOMM is sometimes called serial port emulation.
Proximity marketing. Proximity marketing is the localized wireless distribution of advertising content associated with a particular place. Transmissions can be received by individuals in that location who wish to receive them and have the necessary equipment to do so. Distribution may be via a traditional localized broadcast, or more commonly ...
Low-noise amplifier. A low-noise amplifier ( LNA) is an electronic component that amplifies a very low-power signal without significantly degrading its signal-to-noise ratio (SNR). Any electronic amplifier will increase the power of both the signal and the noise present at its input, but the amplifier will also introduce some additional noise.
Wireless speaker. A JBL Flip 3 battery-powered and waterproof Bluetooth speaker connected to a charging cable. The length is ca. 17 cm, diameter 6.4 cm, weight 450 g. TV set (size 55 inch) with two Sonos Play:5 wireless HiFi speakers (WiFi-based) and a soundbar. Wireless speakers are loudspeakers that receive audio signals using radio frequency ...
The 71-year-old actor has starred in iconic box-office hits like Jurassic Park and Independence Day, but he’s not looking for his kids to ride his coattails. Goldblum revealed as much on the ...
A negative-feedback amplifier (or feedback amplifier) is an electronic amplifier that subtracts a fraction of its output from its input, so that negative feedback opposes the original signal. [1] The applied negative feedback can improve its performance (gain stability, linearity, frequency response, step response) and reduces sensitivity to ...
June 12, 2024 at 12:28 PM. An Arizona man planned a mass shooting targeting Black concertgoers in Atlanta in an attempt to spark a “race war” before November’s U.S. presidential election ...
A radio-frequency power amplifier ( RF power amplifier) is a type of electronic amplifier that converts a low-power radio-frequency (RF) signal into a higher-power signal. [1] Typically, RF power amplifiers are used in the final stage of a radio transmitter, their output driving the antenna. Design goals often include gain, power output ...