| 摘要 |
The invention relates to a method, by which a personal communication system is formed, and a device arrangement for forming sound wirelessly to the ear. The arrangement includes an earphone part ( 2 ), a telephone part ( 1 ) and a keyboard and display device ( 3 ), between which there is a low-power radio connection. The control electronics ( 23 ) of the earphone part include a power management system, which reduces the power consumption close to zero or to zero when there is no communication between the earphone part ( 2 ) and the telephone part ( 1 ). The earphone ( 2 ) has been shaped so small that it can be fitted at least partly into the user's ear or the canal of the ear. The earphone part also includes a rechargeable or non-rechargeable battery ( 21 ) and possibly a charging system ( 26 ), which can be implemented by solar cells, kinetic energy, sound energy, induction or a thermoelectric converter. The telephone part ( 1 ) consists of a display ( 11 ), keyboard ( 12 ), one or more microphones ( 13 ), a battery ( 14 ), a radio unit ( 15 ), electronic unit ( 17 ) and an antenna unit ( 18 ). The radio technique used can be, for example, the UWB technique, which has a high data transfer capacity with low power requirement. |
