USB On-The-Go

USB On-The-Go, often abbreviated to USB OTG or just OTG, is a specification first used in late 2001 that allows USB devices, such as digital audio players or mobile phones, to act as a host, allowing other USB devices, such as USB flash drives, digital cameras, mice or keyboards, to be attached to them. Use of USB OTG allows those devices to switch back and forth between the roles of host and client. For instance, a mobile phone may read from removable media as the host device, but present itself as a USB Mass Storage Device when connected to a host computer.

In other words, USB On-The-Go introduces the concept of a device performing both master and slave roles – whenever two USB devices are connected and one of them is a USB On-The-Go device, they establish a communication link. The device controlling the link is called the master or host, while the other is called the slave or peripheral.

Overview

Standard USB uses a master/slave architecture; a host acts as master device for the entire bus, and a USB device acts as slave. Devices are designed from the outset to assume one role or the other – computers are generally set up to be hosts, while, for example, printers are normally slaves.

OTG

OTG may refer to:

USB

USB, short for Universal Serial Bus, is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic devices. It is currently developed by the USB Implementers Forum.

USB was designed to standardize the connection of computer peripherals (including keyboards, pointing devices, digital cameras, printers, portable media players, disk drives and network adapters) to personal computers, both to communicate and to supply electric power. It has become commonplace on other devices, such as smartphones, PDAs and video game consoles. USB has effectively replaced a variety of earlier interfaces, such as serial and parallel ports, as well as separate power chargers for portable devices.

Overview

In general, there are three basic kinds or sizes related to the USB connectors and types of established connection: the older "standard" size, in its USB 1.1, 2.0, and 3.0 variants (for example, on USB flash drives), the "mini" size (primarily for the B connector end, such as on many cameras), and the "micro" size, in its USB 1.1, 2.0, and 3.0 variants (for example, on most modern mobile phones).

Samsung Galaxy Note series

Samsung Galaxy Note is a series of Android-based high-end smartphones and high-end tablets developed and marketed by Samsung Electronics. The line is primarily oriented towards pen computing; all Galaxy Note models ship with a stylus pen and incorporate a pressure-sensitive Wacom digitizer. All Galaxy Note models also include software features that are oriented towards the stylus and the devices' large screens, such as note-taking and digital scrapbooking apps, and split-screen multitasking.

The Galaxy Note smartphones have been considered the first commercially successful examples of "phablets"—a class of smartphone with large screens that are intended to straddle the functionality of a traditional tablet with that of a phone. Samsung sold over 50 million Galaxy Note devices between September 2011 and October 2013. 10 million units of the Galaxy Note 3 have been sold within its first 2 months, 30 million were of the Note II, while the original Galaxy Note sold around 10 million units worldwide.