Portable radio terminal with infrared communication function, infrared emission power controlling method between portable radio terminal and apparatus with infrared communication function
US6525854B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1998 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | Dec 23, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02D30/70
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The invention provides a portable radio terminal with an infrared communication function by which, even if the communication distance varies, appropriate infrared emission power control can be performed to achieve reduction in power consumption in infrared communication by detecting the other party of infrared communication or a reception power. The portable radio terminal with an infrared communication function comprises an infrared communication section for transmitting and receiving a signal in an infrared frequency band, a communication object party detection section for detecting information of the other party of infrared communication, and a control section for controlling an emission power of the infrared communication section in response to information of the other party of infrared communication detected by the communication object party detection section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.