Human community is entering an era of ubiquitous computing, when networks are seamlessly interconnected and facts is always accessible at our fingertips. The practical implementation of ubiquitous services requires three levels of connectivity: Wide Area Networks (Wan), typically via the Internet, to remotely associate all types of severs and terminals; Local Area Networks (Lan), typically via Ethernet or WiFi connectivity among all the facts and transportation appliances in offices and homes; and Human Area Networks (Han) for connectivity to personal information, media and transportation appliances within the much smaller sphere of ordinary daily activities the last one meter.
What is RedTacton?
RedTacton is a new Human Area Networking technology that uses the outside of the human body as a safe, high speed network transmission path!!RedTacton is a break-through technology that, for the first time, enables dependable high-speed Han. In the past, Bluetooth, infrared communications (IrDa), radio frequency Id systems (Rfid), and other technologies have been proposed to solve the "last meter" connectivity problem. However, they each have various underlying technical limitations that constrain their usage, such as the precipitous fall-off in transmission speed in multi-user environments producing network congestion.
1. RedTacton uses the minuscule galvanic field emitted on the outside of the human body. Technically, it is fully positive from wireless and infrared.
2. A transmission path is formed at the occasion a part of the human body comes in perceive with a RedTacton transceiver. Physically separating ends the perceive and thus ends communication.
3. Using RedTacton, transportation starts when terminals carried by the user or embedded in devices are associated in various combinations agreeing to the user's natural, corporal movements.
4. Communication is inherent using any body surfaces, such as the hands, fingers, arms, feet, face, legs or torso. RedTacton works straight through shoes and clothing as well.
Basic Principle
RedTacton takes a different technical approach. Instead of relying on electromagnetic waves or light waves to carry data, RedTacton uses weak galvanic fields on the outside of the body as a transmission medium.
1. The RedTacton transmitter induces a weak galvanic field on the outside of the body.
2. The RedTacton receiver senses changes in the weak galvanic field on the outside of the body caused by the transmitter.
3. RedTacton relies upon the principle that the optical properties of an electro-optic crystal can vary agreeing to the changes of a weak galvanic field.
4. RedTacton detects changes in the optical properties of an electro-optic crystal using a laser and converts the result to an electrical signal in an optical receiver circuit.
The three major functional features of RedTacton are highlighted below.
1. A communications path can be created with a simple touch, automatically initiating the flow of data in the middle of a body-centric electronic gismo and a computer that is embedded in the environment. For example, two population equipped with RedTacton devices could replacement data just by shaking hands. A wide range of natural human actions -- grasping, sitting down, walking, or standing in a particular place -- can be used to trigger RedTacton to start a networked process.
2. Using a RedTacton electro-optic sensor, two-way transportation is supported in the middle of any two points on the body at a throughput of up to 10 Mbps. transportation is not just confined to the outside of the body, but can tour straight through the user's clothing to a RedTacton gismo in a pocket or straight through shoes to spin with a RedTacton gismo embedded in the floor. Unlike wireless technologies, the transmission speed does not deteriorate even in the nearnessy of large crowds of population all communicating at the same time in meeting rooms, auditoriums or stores. Because the body outside is the transmission path, increasing the amount of associated users directly increases the available amount of individual transportation channels.
3. RedTacton can utilize a wide range of materials as a transmission medium, as long as the material is conductive and dielectric, which includes water and other liquids, various metals, positive plastics, glass, etc. Using ordinary structures such as tables and walls that are familiar and readily available, one could absolutely institute a seamless transportation environment at very low cost using RedTacton. (Note that constraints are imposed by the distance and environment of the propagating conductor, and by the thickness of the dielectric.)
Mechanism of transportation with RedTacton
The transmitter sends data by inducing fluctuations in the minuscule galvanic field on the outside of the human body. Data is received using a photonic galvanic field sensor that combines an electro-optic crystal and a laser light to detect fluctuations in the minuscule galvanic field.
The plainly occurring galvanic field induced on the outside of the human body dissipates into the earth. Therefore, this galvanic field is exceptionally faint and unstable. The photonic galvanic field sensor industrialized by Ntt enables weak galvanic fields to be measured by detecting changes in the optical properties of an electro-optic crystal with a laser beam.
Features
RedTacton has three main functional features.
(1) Touch: Touching, gripping, sitting, walking, stepping and other human movements can be the triggers for unlocking or locking, beginning or stopping equipment, or obtaining data.
(2) Broadband & Interactive: Bandwidth does not deteriorate even with duplex operations and simultaneous way by many users! Duplex, interactive transportation is inherent at a maximum speed of 10Mbps. Because the transmission path is on the outside of the body, transmission speed does not deteriorate in congested areas where many population are communicating at the same time.
(3) Any media: In increasing to the human body, various conductors and dielectrics can be used as transmission media. Conductors and dielectrics may also be used in combination.
