| Q4-1 |
Is it possible to coexist with now using IrDA ? |
| A4-1 |
It depends on the situation. But there is probably no problem because the
interference between infrared of both systems is hardly probable in general
use. |
| Q4-2 |
What is the difference between beam scattering method and narrow beam method ? |
| A4-2 |
Typical example of beam scattering method is the remote controller of television
and video recorder and it is for low speed communication. Communication
is possible if the beam is pointed to the direction of receiving element
roughly. In narrow beam method the beam is concentrated by lens as a very
narrow beam and it is for high speed communication for example LAN. |
| 4-2 |
In narrow beam method the transmitter and the receiver are located directly
on the line and the laser communication is the representative of it. In
beam scattering method the transmitted infrared spreads like a cone and
the equipment can be easily set because the axis of transmitter and receiver
does not necessarily coincide with each other. |
| Q4-3 |
What is the difference of the throughput compared with wire method ? |
| A4-3 |
If the transmission speed is the same, data can be also transmitted at
the same speed in both case of wire method like telephone and wireless
method like radio wave and infrared. |
| 4-3 |
In 10Mb/s infrared communication, data can be transmitted at the similar speed with 10Mb/s wire communication. |
| Q4-4 |
What is the trend of standardization of the industry ? |
| A4-4 |
ARIB (Association of Radio Industries and Businesses) standardized in February
1997 in Japan. (Standard No. : ARIB STD-T50)ARIB (Association of Radio
Industries and Businesses) standardized in February 1997 in Japan. (Standard
No. : ARIB STD-T50) |
icsa@arib.or.jp